Disclosure of Invention
Therefore, the invention aims to solve the problem of thermal crosstalk in partition temperature control in the prior art, and provides a partition temperature control method and a partition temperature control system, which are used for triggering and inhibiting temperature crosstalk by temperature difference, improving the temperature control precision of each temperature control area, stabilizing the temperature deviation of each temperature control area and reducing energy consumption.
In order to solve the above-mentioned technical problems, the present invention provides a partition temperature control method, which includes,
Dividing the temperature control mattress into a plurality of independent temperature control areas;
Receiving a partition temperature setting signal sent by a user side;
starting a target temperature control area according to user setting, and executing the set temperature to heat the target temperature control area;
Acquiring actual temperature data of the target temperature control areas, generating PWM control signals according to the difference value between the set temperature and the actual temperature, and adjusting heating power of each target temperature control area according to the PWM control signals;
When the actual temperature difference between the adjacent temperature control areas is larger than or equal to the first temperature difference, the heat transfer path between the adjacent temperature control areas is triggered to be changed so as to inhibit heat transfer between the temperature control areas.
In one embodiment of the invention, the control method further comprises the steps of acquiring pressure distribution data of the surface of the temperature control mattress, analyzing the pressure distribution data to extract a mattress use area, and executing the temperature control area corresponding to the mattress use area to heat the mattress.
In one embodiment of the invention, the control method further comprises dividing the mattress use area into a first pressure area, a second pressure area and a third pressure area, wherein the pressure value of the first pressure area is the largest, the pressure value of the third pressure area is the smallest, heating power of each corresponding temperature control area is respectively adjusted for the first pressure area, the second pressure area and the third pressure area, heating power of the first pressure area corresponding to the temperature control area is increased, and the temperature control area is heated according to the adjusted heating power.
In one embodiment of the invention, the control method further comprises switching the heating unit of the low temperature region of the adjacent temperature control region to a pulse heating mode when the actual temperature difference of the adjacent temperature control region is smaller than or equal to a second temperature difference, wherein the second temperature difference is smaller than the first temperature difference.
In one embodiment of the invention, an extended heat transfer path is triggered to inhibit heat transfer between adjacent ones of the temperature controlled regions.
In one embodiment of the invention, the joint width is triggered to be increased to inhibit heat transfer between adjacent temperature control areas, wherein the joint is a connecting gap between the adjacent temperature control areas.
In one embodiment of the invention, a heat insulation device is arranged at a joint of the temperature control mattress at the adjacent temperature control area, the heat insulation device comprises an air bag, the air bag is embedded into the temperature control mattress and penetrates through the mattress from the bottom surface to the top surface vertically and completely, and when the actual temperature difference between the adjacent temperature control areas is greater than or equal to a first temperature difference, the air bag is triggered to be inflated.
In one embodiment of the invention, aerogel insulation sheets are arranged in the air bags.
The present invention also provides, based on the same inventive concept, a partitioned temperature control system, comprising,
The temperature control mattress comprises a plurality of independent temperature control modules, a plurality of temperature control modules, a temperature control module and a temperature control module, wherein the plurality of independent temperature control modules are configured corresponding to a plurality of independent temperature control areas of the temperature control mattress;
the communication module is used for receiving the partition temperature setting signal sent by the user side;
the main control module is connected with the communication module, the heating unit and the temperature acquisition unit;
the main control module is used for receiving the partition temperature setting signal, starting a target temperature control area according to user setting, and executing the set temperature to heat the target temperature control area;
The main control module is also used for calculating the difference value between the set temperature and the actual temperature and generating a PWM control signal;
The main control module is also used for independently adjusting the heating power of each target temperature control area according to the PWM control signals;
And when the actual temperature difference between the adjacent temperature control areas is larger than the first temperature difference, the dynamic heat transfer path adjusting module is triggered to change the heat transfer path between the adjacent temperature control areas so as to inhibit heat transfer between the temperature control areas.
In one embodiment of the invention, the control system further comprises a pressure acquisition module for acquiring pressure distribution data of the surface of the temperature control mattress, a pressure analysis module for analyzing the pressure distribution data and extracting a mattress use area according to an analysis result, and a temperature control adjustment module for adjusting a target temperature control area according to the mattress use area.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
according to the partition temperature control method and system, the temperature control precision of each temperature control area is improved, the temperature deviation of each temperature control area is stabilized, and the energy consumption is reduced by dynamically inhibiting the synergistic effect of temperature crosstalk and accurate partition control.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
Example 1
The embodiment of the application discloses a zoned temperature control method, which aims to solve the problem that temperature crosstalk exists among various temperature control areas of a temperature control mattress with a plurality of independent temperature control areas, the temperature crosstalk can cause the limitation of the temperature control precision of the various temperature control areas, the fluctuation of temperature deviation is obvious, and the whole energy consumption is inevitably increased in order to compensate the temperature deviation. The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings:
referring to fig. 1, an embodiment of the present invention discloses a partition temperature control method, including,
S10, dividing the temperature control mattress into a plurality of independent temperature control areas;
s20, receiving a partition temperature setting signal sent by a user side;
S30, starting a target temperature control area according to user setting, and executing set temperature heating of the target temperature control area;
s40, acquiring actual temperature data of the target temperature control areas, generating PWM control signals according to the difference value between the set temperature and the actual temperature, and adjusting heating power of each target temperature control area according to the PWM control signals;
When the actual temperature difference between the adjacent temperature control areas is larger than or equal to the first temperature difference, the heat transfer path between the adjacent temperature control areas is triggered to be changed so as to inhibit heat transfer between the temperature control areas.
The temperature control mattress is divided into a plurality of areas capable of independently controlling temperature, each area is controlled by an independent heating unit, and the areas can be distributed in rectangular, square or irregular areas according to different sizes and shapes of user demands and mattress designs. For example, the head, waist, foot and other temperature control areas are designed to be independently powered, the heating power and heating time are independently controlled, flexible heating sheets can be embedded in the surface layer of the mattress, the serpentine wiring design is adopted, the area of the area is uniformly covered, the temperature sensors are arranged on the surface layer of the whole mattress, at least three groups of temperature sensors are arranged corresponding to each temperature control area, and the temperature sensors are used for collecting the actual temperature data of the corresponding temperature control area in real time and are used for temperature feedback control and triggering and restraining temperature crosstalk.
The user can set the expected temperature of each temperature control area through a control panel or mobile equipment (such as mobile phone application), and a set signal is transmitted to a control system, so that the temperature control precision and the customization requirement of each temperature control area are ensured to be met. For example, an instruction is sent through a bluetooth protocol, and the instruction format includes a temperature control area number and a target temperature.
The control unit starts the corresponding heating unit according to the partition temperature setting signal sent by the user and starts to heat the target temperature control area, and the heating power of the target temperature control area can be automatically adjusted according to the set temperature so as to ensure that the expected target temperature is reached. For example, the temperature sensor samples at a certain frequency until the initial stage of full-power heating (duty ratio 100%) reaches 80% of the set temperature (also called target temperature), and the temperature sensor in each temperature control area acquires the actual temperature in real time and transmits the data to the control unit. The control unit compares the set temperature with the actual temperature and calculates the temperature difference (i.e., the deviation value). The control unit generates PWM control signals according to the temperature difference and is used for adjusting the power of the heating unit, and the PWM signals can adjust the switching state of the heating element and accurately control the heating power so as to ensure the stability of the temperature.
When the temperature difference between adjacent temperature control areas reaches or exceeds a preset threshold (namely, a first temperature difference) in the heating process, a temperature control mechanism is automatically triggered to change the heat transfer path between the adjacent temperature control areas, for example, the heat transfer between the adjacent areas is reduced by adjusting the heat isolation layer of the mattress or using heat insulation materials so as to avoid temperature crosstalk between the adjacent areas.
The temperature control mattress is divided into a plurality of independent temperature control areas, each temperature control area can independently adjust the temperature, the requirements of different users can be met, and accurate temperature control can be realized by combining a real-time temperature feedback and PWM (pulse-Width modulation) adjusting mechanism, so that temperature fluctuation or overlarge deviation is avoided. When the temperature difference between the adjacent temperature control areas is larger than or equal to a preset first temperature difference, the control system can restrain heat transfer mutually by adjusting the heat transfer paths, and the mechanism effectively reduces heat mutual interference between different temperature control areas and prevents unstable temperature control caused by temperature crosstalk. Meanwhile, by optimizing the heat transfer paths between the adjacent areas, each temperature control area can be ensured to run in the optimal thermal environment, so that the temperature difference and the energy consumption are further reduced, and the overall temperature control efficiency is improved.
It should be noted that, the first temperature difference setting is related to the thermal conductivity of the mattress material, the response speed and power of the heating element, the size of the temperature control area, the use condition of the mattress and the external environment temperature, and the ideal first temperature difference value should balance the temperature control precision, the comfort and the energy efficiency, so as to ensure that the energy consumption is not excessively consumed and the transition adjustment is not caused while the user requirement is met. For example, for common mattress materials (e.g., memory cotton, latex, polyurethane, etc.), the first temperature differential setting may be between 2 ℃ and 5 ℃, a smaller temperature differential may be selected for materials with lower thermal conductivity (e.g., 2 ℃) and a larger temperature differential may be set for materials with higher thermal conductivity (e.g., 4 ℃ or 5 ℃). The first temperature difference may be set between 2 ℃ and 3 ℃ for a fast responding heating element and may be increased to 4 ℃ or 5 ℃ for a slower responding heating element as appropriate to avoid over-regulation.
In one specific application scenario, a user sets a left side of 38 ℃ to be in a physiotherapy mode, and sets a right side of 28 ℃ to be in a cooling mode, so that a heat transfer path between the left area and the right area is triggered to be changed, and the heat conductivity coefficient is reduced.
Specifically, in order to more effectively isolate the temperature of each temperature control region, two methods of preventing heat from flowing across the region by "extending the heat transfer path" and "increasing the seam width" are employed, and these methods are described in detail below:
in the first scheme, the heat transfer path is triggered to be prolonged so as to inhibit heat transfer between adjacent temperature control areas.
The goal of extending the heat transfer path is to reduce temperature cross talk by increasing the distance that heat is transferred from one temperature controlled region to another, so that the process of heat flow becomes slower. For example, multilayer insulation materials are designed that form an effective thermal barrier at the seams or between adjacent regions. Or to adjust the layered structure of the mattress, such as adding adjustable insulating films or foam materials between the temperature controlled areas, which may be increased or decreased as needed to create a longer heat conduction path.
And triggering to increase the joint width so as to inhibit heat transfer between adjacent temperature control areas, wherein the joint is a connecting gap between the adjacent temperature control areas.
The seam width refers to a connecting gap between adjacent temperature control areas, the seam width is increased to help inhibit heat transfer, when the control system detects that the temperature difference between the adjacent areas is large, the operation of automatically increasing the seam width is triggered, and by increasing the seam width, the mattress forms larger gaps between the temperature control areas, heat transfer through the gaps is blocked, so that the efficiency of heat flowing from one area to the other area can be reduced, and temperature crosstalk is reduced. For example, materials with deformability (such as smart foam, thermally responsive materials, etc.) are used to automatically expand the width of the seam according to the temperature differential.
By the scheme of prolonging the heat transfer path and increasing the joint width, heat transfer between adjacent temperature control areas can be effectively inhibited, temperature crosstalk is avoided, temperature control precision is improved, and energy consumption is reduced.
Further, as a preferable scheme of the embodiment of the invention, a heat insulation device is arranged at the joint of the temperature control mattress at the adjacent temperature control area, the heat insulation device comprises an air bag, the air bag is embedded into the temperature control mattress and penetrates through the mattress from the bottom surface to the top surface vertically and completely, and when the actual temperature difference between the adjacent temperature control areas is larger than or equal to the first temperature difference, the air bag is triggered to be inflated.
The heat insulation device forms an electric control heat insulation layer, and the electric control heat insulation layer comprises air bags which are uniformly distributed at the joints of each adjacent temperature control area in the production process of the mattress, and the air bags are embedded into the temperature control mattress and penetrate through the vertical thickness of the whole mattress, so that heat transfer can be effectively prevented from the bottom surface to the top surface of the mattress. When the air bag is not inflated, the heat insulation piece is formed to restrain heat transfer, and when the actual temperature difference between the adjacent temperature control areas is larger than or equal to the first temperature difference (the actual temperature difference between the first temperature control area and the second temperature control area is needed to be described), an air bag inflation mechanism is triggered, the air bag is inflated rapidly to form an air isolation layer, heat transfer is prevented, air serves as a good heat insulation medium, and the heat diffusion speed between the temperature control areas can be effectively reduced. The function of the inflatable bladder is to lengthen or completely block the heat conduction path of adjacent temperature control zones, thereby reducing fluctuations in temperature differential and helping each temperature control zone maintain a set temperature more accurately.
In addition, the air charge quantity of the air bag is dynamically controlled according to real-time temperature difference change, so that the optimal heat insulation effect after each time of air charge is ensured, and meanwhile, the air bag can respond in time and effectively prevent temperature crosstalk when the temperature difference changes. The inflation and release processes of the air bag can be accurately matched with temperature change, so that an accurate temperature control effect is achieved, and unnecessary energy consumption is reduced.
It should be noted that when the preset temperature difference threshold (i.e., the first temperature difference) is not reached, the air bag is not inflated, and only the air bag is adjusted when actually needed, so that unnecessary inflation operation can be effectively reduced, and energy waste is avoided. Meanwhile, the inflation speed and the inflation quantity of the air bags can be finely adjusted according to the temperature condition of the mattress, so that the energy efficiency is further improved.
Further, aerogel heat insulation sheets are arranged in the air bags. The aerogel heat insulation sheet is arranged to further improve the heat insulation performance of the air bag and enhance the heat insulation effect between adjacent temperature control areas. The aerogel is used as a high-efficiency heat insulation material, and the unique physical properties of the aerogel can obviously enhance the heat insulation capability of the air bag after being inflated. After the air bag is inflated, the aerogel heat insulation sheet keeps the temperature of the inflated air, so that the heat insulation effect of the whole air bag is enhanced, and the heat exchange between the air bag and the outside is further reduced due to the low heat conduction performance, so that the temperature independence of adjacent temperature control areas is kept. Meanwhile, the void structure of the aerogel can capture and isolate heat, so that heat is prevented from spreading inside the inflatable airbag, and even in the airbag expansion process, the aerogel can stabilize temperature difference. Even after the balloon is deflated, the initial insulation state can be quickly restored after the balloon is inflated due to the durable insulation properties of the aerogel material, and heat transfer is continuously inhibited.
The aerogel heat insulation sheet works together with the air bag, the air bag serves as a heat insulation barrier and plays a role in physical heat insulation through inflation, and the aerogel provides stronger heat insulation capability through low heat conductivity, so that the effect of the air bag after inflation is more remarkable. The two are combined, and double protection is provided in the aspects of high-efficiency heat insulation after the air bag is inflated and maintenance of temperature stability after the air bag is inflated.
It should be noted that, the target temperature control area is an area where the user touches the mattress, and the user turns over or moves and deviates from the originally set target temperature control area, so as to adapt to the needs of the user, and ensure that the temperature control area can be adjusted in real time after the user turns over or moves.
In a specific application scene, the surface of the temperature control mattress is provided with a plurality of pressure sensors which are uniformly distributed on the surface of the mattress, so that the pressure change of each area of the mattress can be perceived in real time. Pressure sensors typically employ flexible, thin sensors that do not affect the comfort of the mattress while ensuring sensitivity to pressure changes. After receiving the pressure data fed back by the pressure sensor, the pressure distribution data is processed in real time through a built-in data analysis algorithm, and the aim of the algorithm is to dynamically identify the actual use area (namely the area with the most concentrated current weight distribution) of the user based on the pressure distribution on the surface of the mattress. By analyzing the change in pressure distribution, a high-density region (e.g., back, buttocks, or lateral recumbent position) of the user's weight distribution, which is the "mattress use region", can be identified.
According to the extracted mattress using area, the temperature control area corresponding to the extracted mattress using area is automatically started to heat, heating power is adjusted to a proper level, and the surface temperature of the mattress is ensured to meet the requirement of a user. According to the movement and turning of the user, the heating area of the mattress can be dynamically adjusted along with the movement and turning, and the heat-insulation control area is ensured to be always covered on the actual use area. In the whole process, the position and the movement of a user are continuously monitored through the pressure sensor, when the user turns over or changes the gesture, the pressure data can change, a new mattress using area is identified in real time, and the heating area is readjusted, so that the condition that the temperature control area and the actual using area are misplaced in the traditional temperature control mattress is avoided. Meanwhile, only the actually used areas are heated, and the unused areas are prevented from being overheated, so that unnecessary energy consumption is reduced.
Considering that the pressure distribution of the human body is matched with the heat requirement, the pressure distribution difference of different parts of the human body is obvious when the human body is in a lying position, the average pressure of the sacrum area is 8-12kPa when the healthy adult is in a supine position according to the related standard, the shoulders are 4-6kPa, and the lower legs are only 1-2kPa. In this application environment, referring to fig. 2, the control method according to the embodiment of the present invention further includes dividing the mattress usage area into a first pressure area, a second pressure area and a third pressure area, where the pressure value of the first pressure area is the largest and the pressure value of the third pressure area is the smallest, and adjusting the heating power of the temperature control areas corresponding to the first pressure area, the second pressure area and the third pressure area respectively, where the heating power of the temperature control areas corresponding to the first pressure area is increased, and the temperature control areas perform heating according to the adjusted heating power.
In a specific application scene, a mattress using area is divided into three pressure areas according to different pressure distributions, wherein the pressure value of a first pressure area is the largest and is usually positioned in a sacrum area of a user, the pressure of the area is usually 8-12kPa and is the area where the contact pressure of the mattress is the most concentrated, a second pressure area is positioned in a shoulder area, the pressure is larger but lower than that of the first pressure area and is usually 4-6kPa, and the pressure value of a third pressure area is the smallest and is usually corresponding to the lower leg and the area below the lower leg, and the pressure of the area is 1-2kPa. The first pressure zone is subjected to the greatest pressure and limited blood flow, and this zone requires a higher heating power to alleviate the problems of less blood flow and reduced temperature sensing sensitivity, while the third pressure zone is subjected to less pressure and less heat demand, so that the heating power of this zone can be kept at a relatively low level. According to the difference of pressure distribution, the heating power of the mattress using area corresponding to the temperature control area is accurately adjusted, so that the temperature control of each part is more in line with the physiological requirement of a user, and particularly in the sacrum area, the temperature sensing and comfort degree are improved due to the fact that the compressed blood flow is reduced, and the temperature sensing is prevented from being reduced due to the fact that the heating power is increased.
In order to further improve the energy efficiency of the temperature control mattress, the embodiment of the invention adds a switching mechanism of a pulse heating mode of a low temperature area on the basis of the existing control scheme, and the switching mechanism comprises switching the heating unit of the low temperature area in the two to the pulse heating mode when the actual temperature difference between the adjacent temperature control areas is smaller than or equal to a second temperature difference, wherein the second temperature difference is smaller than the first temperature difference.
In a specific application scenario, the second temperature difference is defined to be set to a value smaller than the first temperature difference, and when the actual temperature difference of the adjacent temperature control areas is smaller than or equal to the second temperature difference, the low temperature area is switched to the pulse heating mode instead of maintaining full-power heating. The pulse heating mode is heating by periodically turning on and off the heating element, and is generally performed alternately with high power heating for a short period of time and low power rest for a long period of time, specifically, when switching to the pulse heating mode, the heating unit of the low temperature region is not continuously heated any more, but rapid heating for a short period of time (for example, once every 5 seconds, for 1 second each), and then rest for a certain period of time (for example, 4 seconds each), so that the cycle is performed. This approach results in less temperature fluctuations in the mattress while significantly reducing energy consumption.
Example two
Based on the same inventive concept, referring to fig. 3, the present invention also provides a zoned temperature control system, comprising,
The temperature control mattress comprises a plurality of independent temperature control modules, a plurality of temperature control modules, a temperature control module and a temperature control module, wherein the plurality of independent temperature control modules are configured corresponding to a plurality of independent temperature control areas of the temperature control mattress;
the communication module is used for receiving the partition temperature setting signal sent by the user side;
the main control module is connected with the communication module, the heating unit and the temperature acquisition unit;
the main control module is used for receiving the partition temperature setting signal, starting a target temperature control area according to user setting, and executing the set temperature to heat the target temperature control area;
The main control module is also used for calculating the difference value between the set temperature and the actual temperature and generating a PWM control signal;
The main control module is also used for independently adjusting the heating power of each target temperature control area according to the PWM control signals;
And when the actual temperature difference between the adjacent temperature control areas is larger than the first temperature difference, the dynamic heat transfer path adjusting module is triggered to change the heat transfer path between the adjacent temperature control areas so as to inhibit heat transfer between the temperature control areas.
In one embodiment of the invention, the control system further comprises a pressure acquisition module for acquiring pressure distribution data of the surface of the temperature control mattress, a pressure analysis module for analyzing the pressure distribution data and extracting a mattress use area according to an analysis result, and a temperature control adjustment module for adjusting a target temperature control area according to the mattress use area.
The partition temperature control system of the embodiment of the present invention is used for executing the partition temperature control method of the first embodiment, and has the same technical effects as the first embodiment, and is not described herein again.
In summary, the partition temperature control method and system of the invention can improve the temperature control precision of each temperature control area, stabilize the temperature deviation of each temperature control area and reduce the energy consumption by dynamically inhibiting the synergy of temperature crosstalk and accurate partition control.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.