CN104075788A - Medical weight measuring device - Google Patents

Abstract

The medical body weight measuring device provided by the present invention is placed under the supporting column of the hospital bed that is in contact with the ground, and has such features, including: at least one measuring part is respectively placed under each supporting column, and each measuring part includes: A weighing pan, a weighing sensor, an AD converter, and a measurement-side communication module, and a processing display unit, including: a processing-side communication module communicating with each measurement-side communication module, a calculation module, and a device for storing the initial weight of the hospital bed The storage module, the display module, and the control unit include: a power supply control unit, a zero-setting control unit, and a calculation control unit, wherein each communication module on the measurement side sends the weight data obtained by weighing the load cell to the communication module on the processing side. When the patient is not lying on the hospital bed, the calculation module performs the sum operation to obtain the initial weight. When the patient is lying on the hospital bed, the calculation module performs the sum operation to obtain the total weight of the hospital bed and the patient, and then subtracts the initial weight to obtain the weight.

Description

Medical weight measuring device

technical field

The invention relates to a weighing device, in particular to a medical weight measuring device which can quickly and conveniently measure the patient's body weight without moving the bedridden patient.

Background technique

In the hospital, body weight, as an important indicator of the patient's physiological condition, has important guiding significance for doctors' diagnosis. Therefore, it is necessary to measure the body weight of inpatients multiple times and monitor the body weight. For mild patients who are more mobile, you can directly use ordinary scales to measure directly, but for patients with severe bedridden, if you hold them away from the bed for measurement, it is easy to cause secondary injury to the patient, so ordinary scales cannot To achieve the purpose of measuring body weight. In addition, for some patients with hepatic ascites, it is necessary to monitor their body weight regularly to cooperate with the doctor's treatment, and ordinary weighing scales cannot achieve the purpose of measuring body weight. Therefore, how to directly or continuously monitor the patient's weight without leaving the patient's bed is a difficult problem.

In the prior art, a Chinese invention patent application publication document CN1834594A discloses a method for measuring the weight of a bedridden patient and a weight measuring instrument. Each time the measuring instrument measures body weight, it is necessary to use a jack to make the front and rear ends of the bed leave the ground once. , the operation steps are relatively cumbersome, and the rest of the patient will inevitably be affected during the operation. In the case that the body weight needs to be measured frequently, the above operations need to be performed repeatedly, which is quite troublesome. In addition, the weight measuring instrument needs to be measured under the condition that the patient is completely still, that is, the center of gravity of the patient is lying down, which is difficult to grasp in actual operation, and the accuracy of the measurement result is low.

Contents of the invention

The present invention is made to solve the above problems, and aims to provide a medical weight measuring device that can quickly and conveniently measure the patient's weight without moving the bedridden patient.

The medical body weight measuring device provided by the present invention is placed under the supporting columns where the sickbed is in contact with the ground, and has such features, including: at least one measuring part, respectively placed under each supporting column, and each measuring part includes: The weighing pan engaged with the corresponding support column, the load cell fixed on the bottom side of the weighing pan for weighing, the AD converter connected to the load cell in sequence, the communication module on the measurement side, and the processing and display part, including : a processing side communication module communicated with each measurement side communication module, a calculation module for calculating the patient's weight, a storage module for storing the initial weight of the hospital bed, a display module for displaying the weight, and a control unit , including: a power control unit for controlling the start of the processing display unit, a zero-setting control unit for controlling the calculation module to calculate the initial weight, and a calculation control unit for controlling the calculation module to calculate the weight, wherein, when the power control unit controls When the processing and display part is started, each communication module on the measurement side communicates with the communication module on the processing side, and then sends the weight data obtained by weighing the load cell to the communication module on the processing side. When the patient is not lying on the hospital bed, it is set to zero The control part controls the calculation module to perform sum calculation on all the weight data received by the communication module on the processing side to obtain the initial weight, and then controls the storage module to store the initial weight, and further controls the display module to display the number 0, when the patient is lying on the hospital bed , the calculation control component controls the calculation module to perform sum calculation on all the weight data received by the communication module on the processing side to obtain the total weight of the hospital bed and the patient, and subtract the initial weight from the total weight to obtain the weight, and then control the display module to display the weight .

In the medical body weight measuring device provided by the present invention, it may also have such a feature: wherein, the hospital bed has four supporting columns, and the number of measuring parts is four, and they are placed under the four supporting columns in a one-to-one correspondence.

In the medical body weight measuring device provided by the present invention, it can also have such a feature: wherein, the bottom side of the support column of the hospital bed is equipped with rollers, and the two sides of each weighing pan have slopes for the rollers to slide. The weighing pan and the load cell fixedly connected to each other have a certain height, and the certain height does not exceed 2.5 centimeters.

In the medical body weight measuring device provided by the present invention, it can also have such a feature: wherein, the control part also includes a weighing control part, each measuring part also includes a sleep timer, and the weighing control part is set according to the sleep timer. The predetermined time controls the load cell to weigh.

In the medical body weight measuring device provided by the present invention, it may also have such a feature: wherein, the load cell includes four half-bridge sensors, and the bottom side of the weighing pan is provided with four half-bridge sensors for engaging and fixing the four half-bridges one by one. Four decks for sensors.

In the medical body weight measuring device provided by the present invention, it may also have such a feature: wherein, the processing and display part further includes an LED lamp, and the control part also includes an LED control part. When the weight data is obtained, the LED light of the LED control part is turned on. When the patient is not lying on the hospital bed, the zero control part controls the LED light to turn off. When the patient lies on the hospital bed, the calculation control part controls the LED light to turn off.

Function and Effect of Invention

According to the medical body weight measuring device involved in the present invention, each measuring part communicates with the processing display part through the measuring side communication module and the processing side communication module, and each measuring side communication module weighs the corresponding load cell The weight data is sent to the communication module on the processing side. When the patient is not lying on the hospital bed, the initial weight of the hospital bed is obtained by the zero-setting control component to control the calculation module to perform a sum operation, and the initial weight is stored by the storage module. At this time, the display module The number 0 is displayed. When the patient is lying on the hospital bed, the calculation module is controlled by the calculation control part to perform a sum operation to obtain the total weight of the hospital bed and the patient, and the patient's weight is obtained by subtracting the initial weight from the total weight. At this time, the display module displays Therefore, the present invention can quickly and accurately measure the patient's weight without moving the bedridden patient. Secondly, because the display module directly displays the patient's weight, the present invention has a more intuitive , more convenient advantages, in addition, the whole measurement process will not produce any disturbance to the patient, and will not affect the patient's rest.

Description of drawings

Fig. 1 is the structural block diagram of the medical body weight measuring device of the embodiment of the present invention;

Fig. 2 is a schematic structural view of a medical body weight measuring device according to an embodiment of the present invention;

Fig. 3 is the structural representation of weighing pan in the embodiment of the present invention; And

Fig. 4 is a structural schematic diagram of a load cell in an embodiment of the present invention.

Detailed ways

In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the following embodiments will specifically illustrate the medical body weight measuring device of the present invention in conjunction with the accompanying drawings.

Fig. 1 is a structural block diagram of a Chinese medical body weight measuring device according to an embodiment of the present invention; Fig. 2 is a structural schematic diagram of a Chinese medical body weight measuring device according to an embodiment of the present invention.

As shown in Fig. 1 and Fig. 2, in this embodiment, the medical body weight measuring device 100 is mainly provided for the patients who are inconvenient to move and need to be bedridden. Weight, so that the patient's weight can be measured without moving the patient. The medical weight measuring device 100 is placed under the four support columns 210 included in the bed 200 which are in contact with the ground, that is, under the legs of the bed. In addition, in this embodiment, the hospital bed 200 is a movable hospital bed, that is, rollers 210a are fixedly installed on the bottom sides of the four supporting columns 210 respectively, and there are four rollers 210a in total, and the hospital bed 200 can be moved by the four rollers 210a.

The medical weight measuring device 100 specifically includes: four measuring units 10 , a processing display unit 20 and a control unit 30 .

The four measuring units 10 and the processing and displaying unit 20 are in the same zigbee communication network, thereby realizing communication between the four measuring units 10 and the processing and displaying unit 20 . The four measuring parts 10 are placed under the four support columns 210 in one-to-one correspondence for weighing respectively, and after the weighing is completed, the weight data obtained by weighing are sent to the processing and display part 20 for processing, and finally the measurement is realized. For the weight of the patient, the control unit 30 is used to control the four measuring units 10 to weigh and the processing display unit 20 to process.

In this embodiment, the structures of the four measuring units 10 are completely the same. Here, only the measuring unit 10 at the lower right corner in FIG. 2 will be described in detail, and the detailed description of the other three measuring units 10 will be omitted. As shown in FIGS. 1 and 2 , the measurement unit 10 includes: a weighing pan 11 , a load cell 12 , an AD converter 13 , a measurement-side communication module 14 , and a sleep timer 15 .

Fig. 3 is a structural schematic diagram of a weighing pan in an embodiment of the present invention.

As shown in Figures 2 and 3, the top side of the weighing pan 11 is fixed to the roller 210a on the bottom side of the support column 210, and the bottom side is fixedly connected to the load cell 12. The overall weighing pan 11 is trapezoidal. When weighing When the pan 11 is placed horizontally on the ground, the height of the weighing pan 11 is M. The weighing pan 11 has a groove 11a on the top side facing the supporting column 210, and the corresponding supporting column 210 is tightly engaged with the weighing pan 11 through the groove 11a, so that the supporting column 210 does not produce any damage on the weighing pan 11. Shake, thereby fixing the support column 210. Generally, in order to make the support column 210 of the hospital bed 200 engage with the weighing pan 11, the sick bed 200 needs to be lifted up, which is time-consuming and laborious. In order to solve this problem, slope surfaces 11b are provided on both sides of the weighing pan 11. That is, the left and right sides of the weighing pan 11 in FIG. 2 are provided with slope surfaces 11b or the upper and lower sides of the weighing pan 11 in FIG. The roller 210 a slides into the groove 11 a from the slope surface 11 b on one side of the weighing pan 11 , and then engages on the weighing pan 11 . Of course, the weighing pan 11 is also applicable to the immovable hospital bed 200 without rollers 210 a on the bottom side of the support column 210 , and the hospital bed 200 only needs to be lifted. In addition, the weighing pan 11 is provided with four clamps 11c for fixing the load cell 12 on the bottom side facing the ground, and the four clamps 11c are evenly distributed on the bottom side of the weighing pan 11, thereby ensuring that when weighing When an object is pressed on the disk 11, the force on the four card seats 11c is uniform.

As shown in FIG. 2 , the load cell 12 is fixed on the bottom side of the weighing pan 11 to weigh the object pressed on the weighing pan 11 . When the load cell 12 is placed horizontally on the ground, the height of the load cell 12 is N, and the total height of the load pan 11 and the load cell 12 is H, that is, M+N=H. In this embodiment, the total height H of the weighing pan 11 and the load cell 12 is not more than 2.5 cm, that is, M+N=H≤2.5 cm, which facilitates the transfer of the hospital bed 200 .

Fig. 4 is a structural schematic diagram of a load cell in an embodiment of the present invention.

As shown in Figure 4, load cell 12 is a full bridge sensor, is made up of four half bridge sensors, namely half bridge sensor 12a, half bridge sensor 12b, half bridge sensor 12c and half bridge sensor 12d, these four half bridge sensors One-to-one correspondence is snapped into the four card seats 11c on the bottom side of the weighing pan 11 to fix the load cell 12 so that the position of the load cell 12 will not change, thereby ensuring that the load cell 12 measures the weight Data Accuracy. Among them, the +vcc port and the -vcc port are power interfaces for providing power to the load cell 12; the +vout port and the -vout port are signal output ports, and the output is a differential signal, and the differential signal is filtered by hardware through the filter circuit Then output to AD converter 13. In this embodiment, in order to ensure the accuracy of the weighing result, the measuring range of each half-bridge sensor is set to 50 kg, so the measuring range of the entire load cell 12 is 200 kg. The four half-bridge sensors are evenly fixed on the bottom side of the weighing pan 11 by engaging respectively on the four clamps 11c, and then serve as four force-bearing feet of the weighing pan 11. When the weighing pan 11 is pressed with When there is an object of a certain weight, an analog voltage signal matching the weight of the object will be output between the +vout port and the -vout port.

Since the load cell 12 outputs an analog voltage signal, in order to convert the analog voltage signal into a digital signal, an AD converter 13 connected to the load cell 12 is provided in each measuring section 10 for converting The analog voltage signal further obtains weight data obtained by weighing the corresponding load cell 12 . In this embodiment, the AD converter 13 uses a 16-bit high-precision Σ-Δ AD7705, which is an A/D converter with adjustable internal gain. In order to eliminate random errors caused during the weighing process, the AD converter 13 obtains stable digital weight data through multiple sampling and median value filtering. At the same time, since the linearity of the AD converter 13 in each measuring section 10 is different, calibration needs to be performed separately before measurement.

After the four measuring sections 10 have measured their respective weight data, they need to send their respective weight data to the processing display section 20 for processing. Therefore, a measuring instrument connected to the AD converter 13 is also provided in each measuring section 10. The measurement-side communication module 14 is configured to transmit the respective weight data to the processing display unit 20 for processing by the measurement-side communication module 14 provided in each measurement unit 10 . Each measurement side communication module 14 is provided with a unique ID identifier, and when the measurement side communication module 14 sends the weight data, the respective ID identifier and weight data are encapsulated into data packets and sent together. The identifier can quickly determine which measuring unit 10 among the four measuring units 10 sent the received weight data.

Generally, the load cell 12 is in an open state. Since the measurement of the patient's weight does not need to be measured in real time, it only needs to be measured at regular intervals. Therefore, in order to realize energy saving, a sleep timer 15 is also set in each measuring section 10. , a predetermined time is set in the sleep timer 15, and when the predetermined time is not reached, the load cell 12 is in a sleep state, that is, no weighing is performed; when the predetermined time is reached, the load cell 12 is in an open state, that is, Weigh it.

The processing display unit 20 processes the weight data sent by the four measurement units 10 , and the processing display unit 20 includes: a processing side communication module 21 , a calculation module 22 , a storage module 23 , a display module 24 and an LED light 25 .

The processing-side communication module 21 communicates with each measurement-side communication module 14 , and then receives the data packets sent by each measurement-side communication module 14 , that is, the processing-side communication module 21 receives four data packets. The processing side communication module 21 analyzes after receiving the data packet, obtains the ID identifier and corresponding weight data, judges whether the weight data sent by the four measuring parts 10 have been received according to the ID identifier, and when the processing side communication module 21 receives When the weight data sent by the four measurement-side communication modules 14 arrive, the LED light 25 is turned on as a reminder that the processing-side communication module 21 has all received the weight data sent by the four measurement-side communication modules 14 . The calculation module 22 performs sum calculation on the four weight data received by the communication module 21 on the processing side. When the patient is not lying on the hospital bed 200, the calculation module 22 calculates the initial weight of the hospital bed 200. When the patient is lying on the hospital bed 200, the weight of the patient is calculated by subtracting the initial weight of the bed 200 from the total weight of the patient and the bed 200. The storage module 23 is used to store the initial weight of the hospital bed 200. In this way, each time the weight of the patient is measured, the initial weight of the hospital bed 200 does not need to be recalculated. The calculation module 22 can directly obtain it from the storage module 23. For patients who need to measure their weight frequently It is very convenient and does not disturb the patient. When the patient is not lying on the hospital bed 200 , the display module 24 displays the number 0, and when the patient is lying on the hospital bed 200 , the display module 24 displays the patient's weight. In this embodiment, the display module 24 is an LCD display screen, and the LCD display screen can be automatically turned off when it is not operated for a long time, so as to achieve the purpose of energy saving.

The control unit 30 includes: a power control unit 31 , a zero control unit 32 , a calculation control unit 33 , a weighing control unit 34 and an LED control unit 35 .

The power control part 31 includes a power button, and when the power button is pressed, the power control part 31 controls the process display part 20 to start. The zero-setting control part 32 includes a zero-setting button. Under the premise that the patient is not lying on the hospital bed 200, when the zero-setting button is pressed, the zero-setting control part 32 is used to control the calculation module 22 to calculate the initial weight of the hospital bed 200 . The calculation control part 33 includes a calculation key. On the premise that the patient is lying on the hospital bed 200, when the calculation key is pressed, the calculation control part 33 is used to control the calculation module 22 to calculate the patient's weight. The weighing control part 34 controls the load cell 12 to perform weighing according to the predetermined time set in the sleep timer 15 . When the processing-side communication module 21 receives the weight data sent by the four measurement-side communication modules 14, the LED light 25 is turned on to indicate that it has been received. At this time, the LED control part 35 controls the LED light 25 to turn on.

The weighing process of the medical weight measuring device 100 is described in detail below:

When the power button is pressed, the power control unit 31 activates the processing and display unit 20 to realize the communication connection between the four measurement units 10 and the processing and display unit 20 .

When the patient is not lying on the bed 200 , the four measuring units 10 measure the weight of the bed 200 at this time. After each load cell 12 has weighed, the weight data obtained by weighing will be sent to the processing side communication module 21 through the corresponding measurement side communication module 14, and the processing side communication module 21 receives four measurement side communication modules 14 When the weight data are sent out respectively, the LED control part 35 controls the LED lamp 25 to light up. At this time, press the zero-set button, the zero-set control part 32 controls the LED light 25 to turn off, and controls the calculation module 22 to perform sum calculation on the four weight data received by the processing side communication module 21 to obtain the initial weight of the hospital bed 200, and then controls the storage The module 23 stores the initial weight, and further controls the display module 24 to display the number 0.

When the patient lies on the hospital bed 200 , the four measuring parts 10 measure the total weight of the hospital bed 200 and the patient. Similarly, after each load cell 12 has weighed, the weight data obtained by weighing will be sent to the processing side communication module 21 through the corresponding measurement side communication module 14, and the processing side communication module 21 receives four measurement side communications When the module 14 sends weight data respectively, the LED control part 35 controls the LED lamp 25 to light up. At this time, the calculation button is pressed, and the calculation control part 33 controls the LED light 25 to turn off, and controls the calculation module 22 to carry out sum calculations on the four weight data received by the processing side communication module 21 to obtain the total weight of the hospital bed 200 and the patient, and then through this The weight of the patient is obtained by subtracting the initial weight of the hospital bed 200 from the total weight, and the display module 24 is further controlled to display the weight of the patient, thus completing the measurement of the patient's weight.

Function and effect of embodiment

According to the medical body weight measuring device involved in this embodiment, each measuring part communicates with the processing display part through the measuring side communication module and the processing side communication module, and each measuring side communication module weighs the corresponding load cell The obtained weight data is sent to the communication module on the processing side. When the patient is not lying on the hospital bed, the initial weight of the hospital bed is obtained through the zero-setting control component to control the calculation module to perform a sum operation, and the initial weight is stored by the storage module. At this time, the display shows The module displays the number 0. When the patient is lying on the hospital bed, the calculation module is controlled by the calculation control part to perform a sum operation to obtain the total weight of the hospital bed and the patient, and the patient's weight is obtained by subtracting the initial weight from the total weight. At this time, the display module The weight of the patient is displayed. Therefore, this embodiment realizes the rapid and accurate measurement of the weight of the patient without moving the bedridden patient. Secondly, because the display module directly displays the weight of the patient, this embodiment It has the advantages of being more intuitive and convenient. In addition, the entire measurement process will not cause any disturbance to the patient and will not affect the patient's rest.

In the medical body weight measuring device of this embodiment, since both sides of each weighing pan have slope surfaces, the rollers on the bottom side of the support column slide from the slope surfaces into the grooves of the weighing pan, thereby realizing the sick bed It is fixed on the weighing pan, and since the total height of the weighing pan and the load cell does not exceed 2.5 cm, it is convenient to move the hospital bed.

In the medical body weight measuring device of this embodiment, because each measuring part is provided with a sleep timer so that the weighing sensor performs weighing only at a predetermined time, this embodiment realizes energy saving.

In the medical body weight measuring device of this embodiment, since the bottom side of the weighing pan has four decks, the load cell can be fixed to further ensure the accuracy of the weighing result.

In the medical body weight measuring device of this embodiment, since there are LED lights to indicate that the processing side communication module has received the weight data sent by the four measurement side communication modules, the weighing process of this embodiment is more intuitive and clearer.

The above embodiments are preferred examples of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (6)

1. A medical body weight measuring device, which is placed under the support column in contact with the ground on the hospital bed, and is used to measure the body weight of a bedridden patient, is characterized in that it comprises: At least one measuring part is respectively placed under each of the supporting columns, and each of the measuring parts includes: a weighing pan engaged with the corresponding supporting column, fixed on the bottom side of the weighing pan for A load cell for weighing, an AD converter connected in sequence with the load cell, and a measurement-side communication module; The processing display part includes: a processing side communication module communicated with each of the measurement side communication modules, a calculation module for calculating the patient's body weight, and a storage module for storing the initial weight of the hospital bed , and a display module for displaying the body weight; and The control part includes: a power control part for controlling the start-up of the processing display part, a zero control part for controlling the calculation module to calculate the initial weight, and a control part for controlling the calculation module to calculate the weight computing control unit, Wherein, when the power supply control part controls the start-up of the processing display part, each of the measurement-side communication modules communicates with the processing-side communication module, and then sends the weight data obtained by weighing the load cell to The processing side communication module, When the patient is not lying on the hospital bed, the zero-setting control component controls the calculation module to perform an sum operation on all the weight data received by the communication module on the processing side to obtain the initial weight, Then control the storage module to store the initial weight, and further control the display module to display the number 0, When the patient is lying on the hospital bed, the calculation control part controls the calculation module to perform sum operation on all the weight data received by the communication module on the processing side to obtain the weight data of the hospital bed and the patient. The total weight is obtained by subtracting the initial weight from the total weight to obtain the body weight, and then the display module is controlled to display the body weight. 2. The medical weight measuring device according to claim 1, characterized in that: Wherein, the hospital bed has four support columns, The number of the measuring parts is four, and they are placed under the four supporting columns in a one-to-one correspondence. 3. The medical weight measuring device according to claim 1, characterized in that: Wherein, the bottom side of the support column of the hospital bed is equipped with rollers, Both sides of each weighing pan have slopes for sliding the rollers, Each of the weighing pan and the load cell fixedly connected has a certain height, and the certain height is no more than 2.5 centimeters. 4. The medical weight measuring device according to claim 1, characterized in that: Wherein, the control part also includes a weighing control part, Each of said measurement sections also includes a sleep timer, The weighing control part controls the weighing sensor to weigh according to the predetermined time set in the sleep timer. 5. The medical weight measuring device according to claim 1, characterized in that: Wherein, the load cell includes four half-bridge sensors, The bottom side of the weighing pan is provided with four clamping seats for engaging and fixing the four half-bridge sensors in one-to-one correspondence. 6. The medical weight measuring device according to claim 1, characterized in that: Wherein, the processing display part also includes LED lights, The control part also includes an LED control part, When the processing-side communication module receives the weight data sent by each of the measurement-side communication modules, the LED light of the LED control part is turned on, and when the patient is not lying on the hospital bed When the zero setting control part controls the LED light to turn off, when the patient lies on the hospital bed, the calculation control part controls the LED light to turn off.