CN105943272B - Cardiology Nursing Bed - Google Patents

Abstract

The invention relates to a nursing bed for department of cardiology, which comprises a hospital bed, a human body identification device, an ultrasonic detection device, a weight change rate detection device and a display device, wherein the display device outputs corresponding alarm content according to detection results of the human body identification device, the ultrasonic detection device and the weight change rate detection device. By the invention, a safer protective barrier can be erected for medical patients.

Description

Cardiology Nursing Bed

technical field

The invention relates to the field of medical equipment, in particular to a cardiology nursing bed.

Background technique

In order to avoid the occurrence of patients falling from the bed, in the prior art, the hospital management has also taken many positive measures, for example, transforming the bed body of the hospital bed, increasing the height of the guardrail, and setting some border-crossing alarm devices on the bed body of the hospital bed And emergency call equipment to reduce the possibility of patients falling from the bed, and provide the trigger device for the patient to fall from the bed alarm. These modified hospital bed equipment have reduced the occurrence of patients falling from the bed to a certain extent. At the same time, the hospital management has also taken some measures, such as increasing interaction and communication with patients' families, to reduce the time patients are left unattended.

However, the existing bed transformation mechanism of these beds is too simple. Since the interval between patients falling from the bed is very short, the detection accuracy and detection efficiency of the above-mentioned detection and alarm equipment are not high, and the increase of the height of the guardrail and the increase of nursing time can only reduce The probability of the patient falling from the bed, but the event of falling from the bed cannot be avoided. The most important thing is that in the prior art, there is a lack of rapid response measures and rapid response equipment for the patient's falling from the bed, and it is impossible to respond quickly to the patient's falling from the bed. Carry out quick support to patient's health in time, cause the bad consequence that can't avoid patient's fall from bed.

Therefore, there is a need for a new technical solution for hospital bed fall prevention, which can accurately and efficiently detect the patient's fall from the bed, can quickly alarm, and can also use some emergency response equipment to rescue the patient, thereby effectively preventing the patient from being injured. Impact damage.

Contents of the invention

In order to solve the above problems, the present invention provides a cardiology nursing bed. Weight detection equipment, image detection equipment and radiation detection equipment are introduced into the existing hospital bed body to accurately judge the event of a patient falling from the bed. The early warning equipment gives corresponding alarms, and more importantly, targeted emergency rescue equipment is also introduced to effectively support the body of the falling patient, so as to prevent the patient from being physically injured due to falling from the bed, thus indirectly maintaining the treatment effect of the hospital.

According to one aspect of the present invention, a cardiology nursing bed is provided. The nursing bed includes a sick bed, a human body recognition device, an ultrasonic detection device, a weight change rate detection device, and a display device. The display device is based on the body recognition device, the ultrasonic detection device Output the corresponding alarm content according to the detection result of the weight change rate detection equipment.

More specifically, the nursing bed in the Department of Cardiology includes: solar energy detection equipment, located on the outer wall of the building where the ward is located, for real-time detection of the current solar energy intensity; power supply equipment, including solar power supply devices, batteries, switches and The voltage converter and the switching switch are respectively connected to the solar detection equipment, the solar power supply device and the storage battery. When the remaining power of the storage battery is insufficient and the current solar energy intensity is higher than or equal to the preset intensity, switch to the solar power supply device to be powered by the solar power supply device. The voltage converter is connected with the switching switch to convert the 5V input through the switching switch into 3.3V voltage, wherein the solar power supply device is located on the outer wall of the building where the ward is located, and the solar power supply device includes a solar photovoltaic panel; the wireless charging device is connected with the The solar detection device is connected to the storage battery. When the remaining power of the storage battery is insufficient and the current solar intensity is lower than the preset intensity, a connection is established with a nearby wireless charging terminal to start the wireless charging operation. The wireless charging device is also connected to a voltage converter to realize Voltage conversion; ultrasonic detection equipment, located on one side of the bed board of the hospital bed, used to detect whether there is an object passing by the side of the bed board of the hospital bed, and when an object is detected passing by the side of the bed board of the hospital bed, an object passing signal is sent; wireless The communication device is connected with the Freescale MC9S12 chip, including a wireless receiving sub-device and a wireless sending sub-device, which are used to send the fall trigger signal or the fall warning signal to the Remote ward service center; display device, connected with Freescale MC9S12 chip, used to display text information corresponding to fall trigger signal or fall warning signal; high-definition camera device, located on one side of the bed board, facing away from the side of the bed Shooting in the horizontal shooting direction to obtain high-definition side images; homomorphic filtering equipment, connected with high-definition camera equipment to receive high-definition side images, including grayscale compression sub-equipment and linear transformation sub-equipment, grayscale compression sub-equipment is connected with high-definition camera equipment, used To perform grayscale compression processing on each pixel value of the high-definition side image to obtain a compressed image, the linear transformation sub-device is connected to the grayscale compression sub-equipment for performing linear transformation processing on the compressed image to obtain a transformed image, wherein the transformed image The contrast is higher than that of the high-definition side image; the histogram equalization device is connected with the homomorphic filtering device to receive the transformed image, and is used to perform histogram equalization processing on the transformed image to obtain an equalized image, wherein the histogram equalization processing is used to transform the transformed image The gray scale is evenly distributed to the entire gray scale range, so that the obtained equalized image has more variable tones and higher contrast than the transformed image; the adaptive filtering device is connected with the histogram equalization device to obtain the equalized image, and the equalized The image performs adaptive filtering processing to obtain the first filtered image; the improved median filtering device is connected with the adaptive filtering device to obtain the first filtered image, including noise detection sub-equipment, module selection sub-equipment and filtering processing sub-equipment, noise The detection sub-device is connected with the adaptive filtering device, and the gray value of the pixels of the first filtered image Analyze to determine the distribution radius of each noise distribution area, and output the maximum value in the distribution radii of each noise distribution area as the maximum distribution radius, the module selection sub-equipment is connected with the noise detection sub-equipment for receiving the maximum distribution radius, And based on the maximum distribution radius, the filter module for median filtering is selected, and the filter processing sub-equipment is connected with the adaptive filtering device and the module selection sub-equipment respectively, for performing median filtering processing on the first filtered image based on the selected filtering module to obtain The second filtered image, wherein the median filtering process includes performing the following processing for each pixel in the first filtered image as the target pixel: the centroid of the selected filtering module is as the position of the target pixel in the first filtered image Take out multiple pixel points in the first filtered image as multiple reference pixel points, take the maximum value and minimum value among the pixel values of multiple reference pixel points as the pixel maximum value and pixel minimum value, and determine the pixel maximum value and pixel minimum value The average value of the value is used as the average value of the pixel. For each reference pixel, if its pixel value is less than the pixel average value, its pixel value is replaced by 0. If its pixel value is greater than or equal to the pixel average value, its pixel value is retained. Finally, the average value of the pixel values of multiple reference pixels is output as the pixel value of the target pixel; the human body recognition device is connected with the improved median filtering device, and the second filtered image is matched with each reference human body image, and the matching is successful If the matching fails, it will send out the signal of no human body; the mains power access interface is connected with the mains line to receive the AC power supply signal input by the mains line; the current transformer and sampling circuit are connected to the mains line. The A-phase line, B-phase line and C-phase line of the A-phase line are used to sample the current signals in the A-phase line, B-phase line and C-phase line respectively; the voltage sampling circuit is connected with the A-phase line, The B-phase line is connected with the C-phase line, which is used to sample the voltage signals in the A-phase line, B-phase line and C-phase line respectively; the current signal conditioning circuit is connected with the current transformer and the sampling circuit, and is used for sampling the current Carry out signal conditioning; the voltage signal conditioning circuit is connected with the voltage sampling circuit for signal conditioning of the sampling voltage; the AD73360 chip is connected with the current signal conditioning circuit and the voltage signal conditioning circuit respectively, and the sampled current after conditioning and the adjusted Perform 16-bit A/D conversion on the sampling voltage to obtain digital current signals and digital voltage signals, and determine the effective value of the digital current signal and the effective value of the digital voltage signal based on the digital current signal and digital voltage signal; AC power supply conversion equipment, and The A-phase line, B-phase line and C-phase line in the mains line are connected to perform the conversion from AC to DC; the spring device is connected with the Freescale MC9S12 chip and set on the air cushion, which is used to receive the fall trigger When signaling, the air cushion is ejected horizontally from the position below the hospital bed to one side of the hospital bed, and a spring operation completion signal is sent after the air cushion is ejected horizontally; the air pump is connected with the spring device, Freescale MC9S12 chip and air cushion respectively, and is used for receiving to fall When the fall trigger signal and the spring operation completion signal are received, the air cushion is inflated according to the preset inflation capacity; the air cushion, before the spring device receives the fall trigger signal, remains under the hospital bed and is in a contracted state, which is used to inflate after the completion of inflation. Protect the human body from the falling of the bed; the weight change rate detection equipment is located on the lower side of the bed board, including a weight detector and a timer. The weight detector is used to detect the load weight on the bed board in real time, and the weight change rate detection equipment is based on weight detection The output of the instrument and the output of the timer determine the rate of change of the load weight on the bed of the hospital bed. When the rate of change of the load weight is greater than the preset rate of change, a weight change warning signal is issued. When the rate of change of the load weight is less than or equal to the preset rate of change, a signal is issued. Weight change normal signal; Freescale MC9S12 chip is connected with high-definition camera equipment, spring equipment, weight change rate detection equipment, human body recognition equipment and ultrasonic detection equipment respectively. After receiving the weight change warning signal, start the high-definition camera equipment, and then When a human body signal is received and an object passing signal is received, a fall trigger signal is issued; when no human body signal is received and an object passing signal is received, a fall warning signal is issued, and the object passing signal is not received but only received When there is a human body signal, a fall warning signal is issued; the MS card is used to pre-store each reference human body image, and each reference human body image is an image obtained by pre-shooting reference human bodies of different shapes, and is also used to pre-store preset changes rate and preset strength; wherein, the module selection sub-equipment selects the filter module for median filtering based on the maximum distribution radius, including: the larger the maximum distribution radius, the larger the filter module selected for median filtering, and the smaller the maximum distribution radius, The smaller the filter module selected for median filtering; wherein, the optional filter modules in the module selection sub-equipment include 3×3, 5×5, 7×7 and 9×9; wherein, the display device is also connected to the AD73360 chip , used to display the effective value of the digital current signal and the effective value of the digital voltage signal in real time.

More specifically, in the nursing bed of the cardiology department: the wireless communication device is located near the bed.

More specifically, in the nursing bed of the cardiology department: the wireless charging device is located near the hospital bed and is integrated with the wireless communication device on an integrated circuit board.

More specifically, in the cardiology nursing bed: the display device is a liquid crystal display.

More specifically, in the nursing bed of the cardiology department: the timer and the Freescale MC9S12 chip are integrated on an integrated circuit board.

Description of drawings

Embodiments of the present invention will be described below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a structural block diagram of a cardiology nursing bed according to an embodiment of the present invention.

Reference signs: 1 Human body recognition equipment; 2 Ultrasonic detection equipment; 3 Weight change rate detection equipment; 4 Display equipment

detailed description

The embodiment of the cardiology nursing bed of the present invention will be described in detail below with reference to the accompanying drawings.

Medical equipment is the basic condition for continuously improving the level of medical science and technology, and it is also an important symbol of modernization. Medical equipment has become an important field of modern medicine. The development of medical treatment depends to a large extent on the development of instruments, and even in the development of the medical industry, its breakthrough of bottlenecks also plays a decisive role.

Medical devices refer to instruments, equipment, utensils, materials or other items used alone or in combination for the human body, including the required software. The therapeutic effects on the human body surface and inside the body are not obtained through pharmacological, immunological or metabolic means, but medical device products play a certain auxiliary role. During use, it is intended to achieve the following intended purposes: prevention, diagnosis, treatment, monitoring, and mitigation of disease; diagnosis, treatment, monitoring, mitigation, and compensation of injury or disability; research, replacement, and adjustment of anatomical or physiological processes ; Pregnancy Control.

Medical equipment can be divided into 10 categories: ward nursing equipment (beds, carts, oxygen cylinders, gastric lavage machines, needle-free syringes, etc.); surgical equipment (operating beds, lighting equipment, surgical instruments and various tables, racks, stools, cabinets, including microsurgery equipment); radiotherapy equipment (contact therapy machines, superficial therapy machines, deep therapy machines, accelerators, 60 cobalt therapy machines, radium or 137 cesium intracavitary therapy and post-installation device therapy, etc.); Medical treatment equipment-there are three types of treatment methods: internal radiation therapy, sticking therapy and colloid therapy; physical and chemical equipment (generally can be divided into four categories: phototherapy business, electrotherapy equipment, ultrasonic treatment and sulfur therapy equipment); laser equipment-medical laser generator Devices (commonly used are ruby laser, helium-neon laser, carbon dioxide laser, argon ion laser and YAG laser, etc.); dialysis treatment equipment (commonly used artificial kidneys include flat artificial kidney and tubular artificial kidney); body temperature freezing equipment (semiconductor cold knife, gas cold knife and solid cold knife, etc.); first aid equipment (cardiac defibrillation pacing equipment, artificial respirator, ultrasonic nebulizer, etc.); other treatment equipment (hyperbaric oxygen chamber, ophthalmic high-frequency electric chromium devices, electromagnetic magnets, vitreous cutters, adult blood separators, etc.). These all belong to the special treatment equipment for each department, and can be divided into a separate category if necessary.

The bed is the most basic and common medical equipment in the hospital. Most of the patients' medical time and nursing time are spent on the bed. It happened and caused great harm to the patient. In addition to bringing some trauma on the impact, it is also likely to expand the patient's condition and adversely affect the recovery and treatment of the patient.

At present, the hospital management has also actively taken some measures to prevent and avoid patients falling from the bed, such as strengthening the bed body, adding early warning equipment, and reducing unmanned nursing time. However, on the one hand, these measures and equipment are too simple, and detection and early warning The efficiency is not high. On the other hand, there is a lack of emergency rescue equipment to support the patient's body when the patient falls from the bed. Even if the patient's fall from the bed is detected, the consequences of the patient's fall from the bed cannot be avoided. In fact, no help is provided for the patient.

In order to overcome the above deficiencies, the present invention builds a nursing bed in the Department of Cardiology, uses the existing hospital bed body, carries out structural transformation and upgrading, and adds various detection equipment and early warning equipment to accurately identify the event of a patient falling from the bed , the most critical thing is that effective emergency response equipment is also added to carry out emergency rescue when the patient falls from the bed, thereby avoiding the secondary injury caused by the fall from the bed to the patient.

Fig. 1 is a structural block diagram of a nursing bed in the Department of Cardiology according to an embodiment of the present invention. The nursing bed includes a sick bed, a human body recognition device, an ultrasonic detection device, a weight change rate detection device and a display device. The display device is based on the human body recognition device, The detection results of the ultrasonic detection equipment and the weight change rate detection equipment output the corresponding alarm content.

Next, the specific structure of the cardiology nursing bed of the present invention will be further described.

The nursing bed includes: solar energy detection equipment, located on the outer wall of the building where the ward is located, for real-time detection of current solar energy intensity; power supply equipment, including solar power supply devices, batteries, switching switches and voltage converters, the switching switches are respectively connected to solar energy. The detection equipment, the solar power supply device and the storage battery are connected. When the remaining power of the battery is insufficient and the current solar energy intensity is higher than or equal to the preset intensity, switch to the solar power supply device to be powered by the solar power supply device, and the voltage converter is connected with the switch to The 5V voltage input through the switch is converted into 3.3V voltage, wherein the solar power supply device is located on the outer wall of the building where the ward is located, and the solar power supply device includes a solar photovoltaic panel.

The nursing bed includes: a wireless charging device, which is respectively connected to the solar energy detection device and the storage battery. When the remaining power of the storage battery is insufficient and the current solar energy intensity is lower than the preset intensity, a connection is established with a nearby wireless charging terminal to start the wireless charging operation. , the wireless charging device is also connected with a voltage converter to realize voltage conversion.

The nursing bed includes: an ultrasonic detection device located on one side of the bed board of the hospital bed, used to detect whether an object passes by the side of the bed board of the hospital bed, and when an object is detected to pass by the side of the bed board of the hospital bed, an object passing Signal.

The nursing bed includes: a wireless communication device, connected with Freescale MC9S12 chip, including a wireless receiving sub-device and a wireless sending sub-device, used to trigger the fall through a wireless communication link when a fall trigger signal or a fall warning signal is received. The signal or fall warning signal is sent to the remote ward service center.

The nursing bed includes: a display device, connected with Freescale MC9S12 chip, used to display text information corresponding to the fall trigger signal or fall warning signal; high-definition camera device, located on one side of the bed board, facing away from the side of the hospital bed in a horizontal Shoot in the direction of shooting to get high-definition side images.

The nursing bed includes: a homomorphic filtering device, connected with a high-definition camera device to receive a high-definition side image, including a grayscale compression sub-device and a linear transformation sub-device, the grayscale compression sub-device is connected with the high-definition camera device, and is used for the high-definition side image Each pixel value of the image is subjected to grayscale compression processing to obtain a compressed image, and the linear transformation sub-device is connected to the grayscale compression sub-equipment for performing linear transformation processing on the compressed image to obtain a transformed image, wherein the contrast of the transformed image is higher than HD profile images.

The nursing bed includes: a histogram equalization device, which is connected with a homomorphic filtering device to receive the transformed image, and is used to perform histogram equalization processing on the transformed image to obtain a balanced image, wherein the histogram equalization processing is used to convert the grayscale of the transformed image to Uniform distribution over the entire gray-scale range results in an equalized image with more varied tones and higher contrast than transformed images.

The nursing bed includes: an adaptive filtering device connected to the histogram equalization device to obtain an equalized image, and performs adaptive filtering processing on the equalized image to obtain a first filtered image.

The nursing bed includes: an improved median filtering device, which is connected with an adaptive filtering device to obtain a first filtered image, including a noise detection sub-device, a module selection sub-device and a filter processing sub-device, and the noise detection sub-device and the adaptive filtering sub-device The equipment is connected, and the distribution radius of each noise distribution area is determined by analyzing the gray value of the pixel points of the first filtered image, and the maximum value of the distribution radii of each noise distribution area is output as the maximum distribution radius, and the module is selected The sub-device is connected with the noise detection sub-device to receive the maximum distribution radius and select the filter module for median filtering based on the maximum distribution radius, and the filter processing sub-device is respectively connected with the adaptive filtering device and the module selection sub-device for The selected filtering module performs a median filtering process on the first filtered image to obtain a second filtered image, wherein the median filtering process includes performing the following processing on each pixel in the first filtered image as a target pixel: using the target pixel at The position in the first filtered image is used as the centroid of the selected filter module in the first filtered image to take out a plurality of pixel points as a plurality of reference pixel points, and take the maximum and minimum values of the pixel values of the plurality of reference pixel points to As the pixel maximum value and the pixel minimum value, determine the average value of the pixel maximum value and the pixel minimum value as the pixel average value. For each reference pixel point, if its pixel value is less than the pixel average value, then replace its pixel value with 0, If its pixel value is greater than or equal to the pixel average value, its pixel value is retained, and finally the average value of the pixel values of multiple reference pixel points is output as the pixel value of the target pixel point.

The nursing bed includes: a human body recognition device, which is connected with an improved median filter device, and matches the second filtered image with each reference human body image. If the matching is successful, a human body presence signal is sent; if the matching fails, a human body absence signal is sent.

The nursing bed includes: a mains power access interface, connected to the mains line, for receiving the AC power supply signal input by the mains line; a current transformer and a sampling circuit, connected to the A-phase line and the B-phase line in the mains line It is connected with the C-phase line and is used to sample the current signals in the A-phase line, B-phase line and C-phase line respectively; the voltage sampling circuit is connected with the A-phase line, B-phase line and C-phase line in the mains line , for sampling the voltage signals in the A-phase line, B-phase line and C-phase line respectively; the current signal conditioning circuit, connected with the current transformer and the sampling circuit, is used for signal conditioning of the sampling current; the voltage signal conditioning circuit , connected with the voltage sampling circuit, used for signal conditioning on the sampling voltage.

The nursing bed includes: an AD73360 chip, which is connected to the current signal conditioning circuit and the voltage signal conditioning circuit respectively, performs 16-bit A/D conversion on the conditioned sampling current and the conditioned sampling voltage to obtain digital current signals and digital voltages signal, and determine an effective value of the digital current signal and an effective value of the digital voltage signal based on the digital current signal and the digital voltage signal.

The nursing bed includes: AC power conversion equipment, which is connected with the A-phase line, B-phase line and C-phase line in the mains circuit, and is used to perform the conversion from alternating current to direct current; spring equipment, which is connected with Freescale MC9S12 chip and It is arranged on the air cushion, and is used for ejecting the air cushion horizontally from the position below the hospital bed to one side of the hospital bed when a fall trigger signal is received, and sending a spring operation completion signal after the air cushion is ejected horizontally.

The nursing bed includes: an air pump, which is connected to the spring device, the Freescale MC9S12 chip and the air cushion respectively, and is used to inflate the air cushion according to the preset inflation capacity when the fall trigger signal is received and the spring operation completion signal is received; The air cushion, before the spring device receives the fall trigger signal, remains under the hospital bed and is in a contracted state, and is used to protect the human body from falling from the hospital bed after the inflation is completed.

The nursing bed includes: weight change rate detection equipment, located at the lower side of the bed board of the hospital bed, including a weight detector and a timer, the weight detector is used to detect the load weight on the bed board of the hospital bed in real time, and the weight change rate detection device is based on the weight detector The output of the timer and the output of the timer determine the rate of change of the load weight on the bed of the hospital bed. When the rate of change of the load weight is greater than the preset rate of change, a weight change warning signal is issued. When the rate of change of the load weight is less than or equal to the preset rate of change, a weight Change normal signal.

The nursing bed includes: Freescale MC9S12 chip, respectively connected with high-definition camera equipment, spring equipment, weight change rate detection equipment, human body recognition equipment and ultrasonic detection equipment, after receiving the weight change warning signal, start the high-definition camera equipment, and then When a human body signal is received and an object passing signal is received, a fall trigger signal is issued; when no human body signal is received and an object passing signal is received, a fall warning signal is issued, and the object passing signal is not received and only Receive a human body signal and send out a fall warning signal.

The nursing bed includes: MS card, which is used to pre-store various reference human body images, each reference human body image is an image obtained by pre-shooting reference human bodies of different shapes, and is also used to pre-store preset change rates and preset strength.

Among them, the module selection sub-device selects the filter module for median filtering based on the maximum distribution radius, including: the larger the maximum distribution radius, the larger the filter module selected for median filtering, the smaller the maximum distribution radius, and the selected median filter The smaller the filter module is.

Wherein, the filter modules for selection in the module selection sub-device include 3×3, 5×5, 7×7 and 9×9.

Among them, the display device is also connected with the AD73360 chip, which is used to display the effective value of the digital current signal and the effective value of the digital voltage signal in real time.

Optionally, in the platform: the wireless communication device is located near the hospital bed; the wireless charging device is located near the hospital bed and is integrated with the wireless communication device on an integrated circuit board; the display device is a liquid crystal display; The Scale MC9S12 chip is integrated on an integrated circuit board.

In addition, sound waves are the propagation form of the mechanical vibration state (or energy) of objects. Ultrasound refers to a vibration frequency greater than 20,000 Hz, and its vibration frequency (frequency) per second is very high, exceeding the general upper limit of human hearing (20,000 Hz). People call this inaudible sound wave ultrasonic. Due to its high frequency, it has many characteristics: first, it has high power, and its energy is much larger than ordinary sound waves, so it can be used for cutting, welding, drilling, etc. Furthermore, due to its high frequency, short wavelength, no serious diffraction, and good orientation, ultrasonic waves are commonly used for ultrasonic detection in industry and medicine. [1] Ultrasound and audible sound are essentially the same. What they have in common is a mechanical vibration mode, which usually propagates in the elastic medium in the form of longitudinal waves. It is a form of energy transmission. The difference is The ultrasonic frequency is high, the wavelength is short, and it has good beam radiation and directivity when propagating in a straight line within a certain distance. 1 megahertz = 10^6Hz, that is, 1 million vibrations per second, and the frequency of audible waves is between 16-20000HZ. between).

Using the cardiology nursing bed of the present invention, aiming at the technical problem that the prior art cannot provide emergency rescue for patients who fall from the hospital bed, multiple high-precision detection devices are added to conduct comprehensive analysis of the detection results to effectively judge whether the patient has fallen , and also add necessary alarm equipment for alarm, and also add special emergency response equipment to provide emergency rescue when the patient falls.

It can be understood that although the present invention has been disclosed above with preferred embodiments, the above embodiments are not intended to limit the present invention. For any person skilled in the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or to be modified into equivalent changes, etc. effective example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention, which do not deviate from the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims (4)

1. a kind of care bed for department of cardiology, the care bed includes sick bed, human bioequivalence equipment, ultrasonic listening equipment, weight and become Rate detection device and display device, display device are examined according to human bioequivalence equipment, ultrasonic listening equipment and weight rate The testing result of measurement equipment exports corresponding alarm content；

Characterized in that, the care bed also includes：

Solar energy detection device, on the exterior wall of building where ward, for detecting current solar energy intensity in real time；

Power supply unit, including solar powered device, battery, switching switch and electric pressure converter, switching switch respectively with too Positive energy detection device, solar powered device connect with battery, when the solar energy that the dump energy of battery is insufficient and current When intensity is optionally greater than preset strength, solar powered device is switched to be powered by solar powered device, electric pressure converter Connected with switching switch, using the 5V voltage conversions by input is switched by switching as 3.3V voltages, wherein solar powered device On the exterior wall of building where ward, solar powered device includes solar energy photovoltaic panel；

Wireless charging device, it is connected respectively with solar energy detection device and battery, when the dump energy of battery is insufficient and works as When preceding solar energy intensity is less than preset strength, establishes and connected to start wireless charging operation with neighbouring wireless charging terminal, Wireless charging device is also connected with electric pressure converter to realize voltage conversion；

Ultrasonic listening equipment, positioned at the side of sick bed bed board, for detecting whether that object passes through from the side of sick bed bed board, And when being detected with object and passing through from the side of sick bed bed board, send object and skim over signal；

Wireless Telecom Equipment, it is connected with Freescale MC9S12 chips, including the sub- equipment of wireless receiving and the sub- equipment of wireless transmission, For receive fall trigger signal or fall pre-warning signal when will be fallen and trigger signal or fall by wireless communication link Pre-warning signal is sent to the ward service centre of distal end；

Display device, it is connected with Freescale MC9S12 chips, for showing and trigger signal or the pre-warning signal phase of falling of falling The text information answered；

High-definition camera equipment, positioned at the side of sick bed bed board, shot backwards to ward bed side with horizontal shooting direction to obtain high definition Side image；

Homomorphic filtering equipment, it is connected with high-definition camera equipment to receive high definition side image, including the sub- equipment of gray compression and line Property varitron equipment, the sub- equipment of gray compression is connected with high-definition camera equipment, for each pixel to high definition side image Value carries out gray compression processing to obtain compression image, and the sub- equipment of linear transformation is connected with the sub- equipment of gray compression, for pressure Contract drawing picture carries out linear transformation processing to obtain changing image, wherein, the contrast of changing image is higher than high definition side image；

Histogram equalization equipment, it is connected with homomorphic filtering equipment to receive changing image, for performing histogram to changing image To obtain equilibrium figures picture, wherein histogram equalization is handled for the uniform gray level of changing image to be distributed into whole ash equilibrium treatment Spend level scope so that the equilibrium figures picture of acquisition has the contrast of more changeable tone and Geng Gao than changing image；

Adaptive-filtering equipment, it is connected to obtain equilibrium figures picture, and equilibrium figures picture is performed adaptive with histogram equalization equipment Filtering process is to obtain the first filtering image；

Modified medium filtering equipment, it is connected with adaptive-filtering equipment to obtain the first filtering image, including noise measuring Equipment, module select sub- equipment and the sub- equipment of filtering process, and the sub- equipment of noise measuring is connected with adaptive-filtering equipment, by right The gray value of the pixel of first filtering image is analyzed to determine the distribution radius in each noise profile region, and will be each Maximum in the distribution radius in individual noise profile region selects sub- equipment to be examined with noise as maximum distribution radius output, module Sub- equipment connection is surveyed, radius is maximally distributed for receiving, and the filtering mould of medium filtering is carried out based on maximum distribution radius selection Block, the sub- equipment of filtering process selects sub- equipment to be connected with adaptive-filtering equipment and module respectively, for the filtering based on selection Module carries out median filter process to obtain the second filtering image to the first filtering image, wherein median filter process include for Each pixel carries out following handle as target pixel points in first filtering image：With target pixel points in the first filtering figure The centre of form of the filtration module of position alternatively as in takes out multiple pixels as multiple references in the first filtering image Pixel, maximum in the pixel value of multiple reference image vegetarian refreshments and minimum value are taken to be used as pixel maximum and pixel minimum Value, the average value of pixel maximum and pixel minimum is determined using as pixel average, for each reference image vegetarian refreshments, such as Its pixel value of fruit is less than pixel average, then replaces its pixel value with 0, if its pixel value is more than or equal to pixel average, Retain its pixel value, finally exported the average value of the pixel value of multiple reference image vegetarian refreshments as the pixel value of target pixel points；

Human bioequivalence equipment, it is connected with modified medium filtering equipment, the second filtering image and each benchmark human body image is entered Row matching, the match is successful then sends and human body signal be present, and it fails to match then sends no human body signal；

Civil power access interface, is connected with line, for receiving the Alternating Current Power Supply signal of line input；

Current transformer and sample circuit, it is connected with the A phase lines in line, B phase lines and C phase lines, for A phases Current signal in circuit, B phase lines and C phase lines is sampled respectively；

Voltage sample circuit, it is connected with the A phase lines in line, B phase lines and C phase lines, for A phase lines, B phases Voltage signal in circuit and C phase lines is sampled respectively；

Current signal conditioning circuit, it is connected with current transformer and sample circuit, for carrying out signal condition to sampling current；

Voltage signal conditioning circuit, it is connected with voltage sample circuit, for carrying out signal condition to sampling voltage；

AD73360 chips, are connected with current signal conditioning circuit and voltage signal conditioning circuit respectively, to the sampling electricity after conditioning Sampling voltage after stream and conditioning performs 16 A/D conversions respectively, obtains digital current signal and digital voltage signal, is also based on Digital current signal and digital voltage signal determine the virtual value of digital current signal and the virtual value of digital voltage signal；

Alternating Current Power Supply conversion equipment, it is connected with the A phase lines in line, B phase lines and C phase lines, for performing exchange Electricity arrives the conversion of direct current；

Spring equipment, it is connected and is arranged on air cushion with Freescale MC9S12 chips, for receiving trigger signal of falling When, air cushion is ejected into the side of sick bed from sick bed lower position level, and send spring after the horizontal ejection of air cushion and operated Into signal；

Inflator pump, it is connected respectively with spring equipment, Freescale MC9S12 chips and air cushion, for receiving the triggering letter that falls Number and receive spring operation complete signal when, air cushion is inflated according to preset inflation capacity；

Air cushion, before spring equipment does not receive trigger signal of falling, remain in below sick bed and be in contraction state, use Protected in the human body that fallen after inflation to sick bed；

Weight rate detection device, positioned at sick bed bed board downside position, including weight detector and timer, weight detecting Instrument is used to detect the load weight on sick bed bed board, output and meter of the weight rate detection device based on weight detector in real time When device output determine load weight rate of change on sick bed bed board, when load weight rate of change is more than default rate of change, hair Go out weight change pre-warning signal, when load weight rate of change is less than or equal to default rate of change, send weight change normal signal；

Freescale MC9S12 chips, know respectively with high-definition camera equipment, spring equipment, weight rate detection device, human body Other equipment connects with ultrasonic detecting equipment, after weight change pre-warning signal is received, starts high-definition camera equipment, is then connecing Receive when human body signal be present and receiving object and skim over signal, send trigger signal of falling, receive no human body signal and When receiving object and skimming over signal, the pre-warning signal that falls is sent, and do not receive object and skim over signal and receive only presence Human body signal, send the pre-warning signal that falls；

MS cards, for having prestored each benchmark human body image, each benchmark human body image is the benchmark people to the different bodily forms The image that body is shot and obtained in advance, it is additionally operable to prestore default rate of change and preset strength；

Wherein, module, which selects sub- equipment to carry out the filtration module of medium filtering based on maximum distribution radius selection, includes：Maximum point Cloth radius is bigger, and the filtration module of the progress medium filtering of selection is bigger, and maximum distribution radius is smaller, the carry out intermediate value filter of selection The filtration module of ripple is smaller；

Wherein, module selects filtration module selective in sub- equipment to include 3 × 3,5 × 5,7 × 7 and 9 × 9；

Wherein, display device is also connected with AD73360 chips, virtual value and the numeral electricity for real-time display digital current signal Press the virtual value of signal.

2. care bed for department of cardiology as claimed in claim 1, it is characterised in that：

Wireless Telecom Equipment is located at sick bed neighbouring position.

3. care bed for department of cardiology as claimed in claim 1, it is characterised in that：

Wireless charging device is located at sick bed neighbouring position and is integrated in Wireless Telecom Equipment on one piece of surface-mounted integrated circuit.

4. care bed for department of cardiology as claimed in claim 1, it is characterised in that：

Display device is LCDs.