Body temperature detection method, device, medium and body temperature detector

Abstract

The present application discloses a body temperature detection method, which is applied to a body temperature detector, and the detector includes: a temperature sensor made of a thermistor, and a plurality of circuit channels that can characterize the ideal resistance value of the thermistor at different specified temperatures; the method includes: using the temperature sensor to detect the body temperature of the object to be measured, obtaining a target detection temperature, and determining a first circuit channel and a second circuit channel corresponding to a first specified temperature and a second specified temperature; sending a test signal to the two circuit channels respectively to determine the actual resistance value of the first circuit channel and the second circuit channel; correcting the target detection temperature according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured. This method can accurately and reliably detect the body temperature of the human body. Accordingly, a body temperature detection device, a medium and a body temperature detector provided by the present application also have the above-mentioned beneficial effects.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a body temperature detection method, device, medium and body temperature detector. Background Art

[0002] In contact-type body temperature monitoring devices, thermistors are often used as temperature sensors to detect human body temperature. Because the resistance of a thermistor changes with temperature, the body temperature can be determined by measuring the resistance of the thermistor.

[0003] In the prior art, thermistor manufacturers provide a table showing the relationship between thermistor resistance and temperature. When measuring the resistance value corresponding to human body temperature, the body temperature can be determined by comparing it with the table provided by the thermistor manufacturer. However, because thermistor resistance is affected by factors such as the test environment and instrument manufacturing, this method cannot accurately and reliably detect human body temperature.

[0004] It can be seen that how to accurately and reliably detect human body temperature is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a body temperature detection method, device, medium and body temperature detector to accurately and reliably detect human body temperature. The specific scheme is as follows:

[0006] A body temperature detection method is applied to a body temperature detector, the body temperature detector comprising: a temperature sensor made of a thermistor and a plurality of circuit paths capable of characterizing the ideal resistance value of the thermistor at different specified temperatures; the method comprising:

[0007] The temperature sensor is used to detect the body temperature of the subject to be measured, to obtain a target detection temperature, and to determine a first circuit path corresponding to a first specified temperature and a second circuit path corresponding to a second specified temperature; wherein the first specified temperature is the maximum temperature among the specified temperatures corresponding to the multiple circuit paths that is less than the target detection temperature; and the second specified temperature is the minimum temperature among the specified temperatures corresponding to the multiple circuit paths that is greater than the target detection temperature;

[0008] sending a test signal to the first circuit path and the second circuit path respectively to determine actual resistance values of the first circuit path and the second circuit path;

[0009] The target detection temperature is corrected according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured.

[0010] Preferably, the process of sending test signals to the first circuit channel and the second circuit channel respectively to determine actual resistance values of the first circuit channel and the second circuit channel includes:

[0011] sending the test signal to the first circuit channel and acquiring a first output signal of the first circuit channel;

[0012] Power amplification is performed on the first output signal, and digital-to-analog conversion is performed on the first output signal to obtain an actual resistance value of the first circuit channel.

[0013] Preferably, the thermistor is specifically an NTC thermistor.

[0014] Preferably, the multiple circuit channels are constructed by precision resistors.

[0015] Preferably, the process of correcting the target detection temperature according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured includes:

[0016] Correcting the first specified temperature according to the actual resistance value and the ideal resistance value of the first circuit channel to obtain a first correction parameter, and correcting the second specified temperature according to the actual resistance value and the ideal resistance value of the second circuit channel to obtain a second correction parameter;

[0017] The target detection temperature is corrected using the first correction parameter and the second correction parameter to obtain the actual body temperature of the object to be measured.

[0018] Preferably, the process of correcting the first specified temperature according to the actual resistance value and the ideal resistance value of the first circuit channel to obtain a first correction parameter, and correcting the second specified temperature according to the actual resistance value and the ideal resistance value of the second circuit channel to obtain a second correction parameter includes:

[0019] Determine the temperature corresponding to the actual resistance value of the first circuit channel according to a preset mapping relationship to obtain a first theoretical temperature; wherein the preset mapping relationship is a mapping relationship between the thermistor at different temperatures and the resistance value;

[0020] determining the first correction parameter based on the first model and according to the first theoretical temperature and the actual resistance value and the ideal resistance value of the first circuit channel;

[0021] determining a temperature corresponding to the actual resistance value of the second circuit channel according to the preset mapping relationship to obtain a second theoretical temperature;

[0022] determining the second correction parameter based on the second model and according to the second theoretical temperature and the actual resistance value and the ideal resistance value of the second circuit channel;

[0023] The expression of the first model is:

[0024] A1=E1·(T2-t0)(T2-T1);

[0025] The expression of the second model is:

[0026] A2=E2·(t0-T1)(T2-T1);

[0027] In the formula, A1 is the first correction parameter, A2 is the second correction parameter, E1 is the difference between the first specified temperature and the first theoretical temperature, E2 is the difference between the second specified temperature and the second theoretical temperature, T1 is the first specified temperature, T2 is the second specified temperature, and t0 is the target detection temperature.

[0028] Preferably, the process of correcting the target detected temperature using the first correction parameter and the second correction parameter to obtain the actual body temperature of the object to be measured includes:

[0029] Based on the third model, and using the first correction parameter and the second correction parameter, the target detected temperature is corrected to obtain the actual body temperature of the subject to be measured;

[0030] Wherein, the expression of the third model is:

[0031] t = t0 - A1 - A2;

[0032] Wherein, t is the actual body temperature, t0 is the target detection temperature, A1 is the first correction parameter, and A2 is the second correction parameter.

[0033] Accordingly, the present invention also discloses a body temperature detection device, which is applied to a body temperature detector. The body temperature detector includes: a temperature sensor made of a thermistor and a plurality of circuit channels capable of indicating that the thermistor has an ideal resistance value at different specified temperatures; the device includes:

[0034] a body temperature measurement module, configured to detect the body temperature of the subject using the temperature sensor to obtain a target detection temperature, and determine a first circuit path corresponding to a first specified temperature and a second circuit path corresponding to a second specified temperature; wherein the first specified temperature is a maximum temperature less than the target detection temperature among the specified temperatures corresponding to the multiple circuit paths; and the second specified temperature is a minimum temperature greater than the target detection temperature among the specified temperatures corresponding to the multiple circuit paths;

[0035] a signal testing module, configured to send a test signal to the first circuit channel and the second circuit channel respectively, so as to determine actual resistance values of the first circuit channel and the second circuit channel;

[0036] The body temperature correction module is used to correct the target detection temperature according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured.

[0037] Accordingly, the present invention further discloses a body temperature detector, comprising: a temperature sensor made of a thermistor and a plurality of circuit channels capable of characterizing that the thermistor has an ideal resistance value at different specified temperatures; the temperature sensor and the plurality of circuit channels are both connected to a controller, and the controller is provided with a display screen for displaying body temperature data; wherein the controller is configured to perform the following steps:

[0038] The temperature sensor is used to detect the body temperature of the subject to be measured, to obtain a target detection temperature, and to determine a first circuit path corresponding to a first specified temperature and a second circuit path corresponding to a second specified temperature; wherein the first specified temperature is the maximum temperature among the specified temperatures corresponding to the multiple circuit paths that is less than the target detection temperature; and the second specified temperature is the minimum temperature among the specified temperatures corresponding to the multiple circuit paths that is greater than the target detection temperature;

[0039] sending a test signal to the first circuit path and the second circuit path respectively to determine actual resistance values of the first circuit path and the second circuit path;

[0040] The target detection temperature is corrected according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured.

[0041] Correspondingly, the present invention also discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of a body temperature detection method disclosed above are implemented.

[0042] In the present invention, a temperature sensor made of a thermistor and multiple circuit channels that can characterize the ideal resistance values of the thermistor at different specified temperatures are pre-installed in the body temperature detector. This is equivalent to creating multiple circuit channels in which the thermistor has corresponding ideal resistance values at different temperatures. When measuring the body temperature of the object to be measured, the temperature sensor is first used to detect the body temperature of the object to be measured to obtain the target detection temperature. Then, the maximum temperature less than the target detection temperature and the minimum temperature greater than the target detection temperature are searched among the specified temperatures corresponding to the multiple circuit channels to obtain the first specified temperature and the second specified temperature. This is equivalent to finding the minimum temperature range within which the target detection temperature is located from the different temperature values corresponding to the thermistor. Afterwards, the first circuit channel and the second circuit channel corresponding to the first specified temperature and the second specified temperature are determined, and test signals are sent to the first circuit channel and the second circuit channel respectively to determine the actual resistance values of the first circuit channel and the second circuit channel. In this way, the ideal resistance value and the actual resistance value corresponding to the thermistor at different temperatures can be determined in the actual detection environment. Then, based on these values, the environmental error corresponding to the body temperature detection of the object to be measured and the system error due to instrument manufacturing reasons can be determined; finally, the target detection temperature is corrected according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel, so that the body temperature of the object to be measured can be detected more accurately and reliably. Correspondingly, the body temperature detection device, medium and body temperature detector provided by the present invention also have the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0044] Figure 1 A flow chart of a body temperature detection method provided by an embodiment of the present invention;

[0045] Figure 2 A structural diagram of a body temperature detection device provided by an embodiment of the present invention;

[0046] Figure 3 A structural diagram of a body temperature detector provided by an embodiment of the present invention;

[0047] Figure 4 This is a structural diagram of another body temperature detector provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] See Figure 1 , Figure 1 This is a flow chart of a body temperature detection method provided in an embodiment of the present invention. The method is applied to a body temperature detector, which includes: a temperature sensor made of a thermistor and multiple circuit channels capable of representing that the thermistor has an ideal resistance value at different specified temperatures; the method includes:

[0050] Step S11: Using a temperature sensor to detect the body temperature of the subject to be measured, obtaining a target detection temperature, and determining a first circuit path corresponding to a first specified temperature and a second circuit path corresponding to a second specified temperature; wherein the first specified temperature is the maximum temperature of the specified temperatures corresponding to the multiple circuit paths that is less than the target detection temperature; and the second specified temperature is the minimum temperature of the specified temperatures corresponding to the multiple circuit paths that is greater than the target detection temperature.

[0051] Step S12: sending a test signal to the first circuit channel and the second circuit channel respectively to determine the actual resistance values of the first circuit channel and the second circuit channel;

[0052] Step S13: Correcting the target detection temperature according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured.

[0053] In this embodiment, a body temperature detection method is provided that can more accurately and reliably detect the body temperature of a subject. This method requires pre-installing a temperature sensor made of a thermistor in a body temperature detector, along with multiple circuit paths capable of characterizing the ideal resistance values of the thermistor at different specified temperatures.

[0054] Specifically, the thermistor can be an NTC (Negative Temperature Coefficient) thermistor. As is understandable, because NTC thermistors are not only inexpensive but also more sensitive to temperature changes and have an extremely fast response speed, using an NTC thermistor in a temperature sensor allows for faster and more accurate detection of the subject's body temperature.

[0055] In addition, in practical applications, precision resistors can be used to build multiple circuit channels that can characterize the ideal resistance values of thermistors at different specified temperatures. Because precision resistors are high-precision, low-temperature drift, and highly reliable resistors, with the highest precision of precision resistors reaching 0.01%, when precision resistors are used to build circuit channels that correspond to the ideal resistance values of thermistors at different specified temperatures, the actual resistance values of the circuit channels can be made closer to the ideal resistance values of the thermistors at the specified temperatures.

[0056] It can be imagined that when multiple circuit channels are provided in the body temperature detector that can represent the ideal resistance values of the thermistor at different specified temperatures, it is equivalent to creating multiple circuit channels in the body temperature detector that have corresponding ideal resistance values of the thermistor at different temperature values. In other words, each circuit channel can represent the ideal resistance value of the thermistor at a certain temperature value.

[0057] Specifically, in actual applications, the designated temperatures corresponding to multiple circuit channels can be set based on the normal body temperature range of the subject to be measured. For example, the normal body temperature of a human body is approximately 36.0-37.0°C. Therefore, when setting the designated temperatures corresponding to multiple circuit channels, the designated temperatures corresponding to the multiple circuit channels can be set to 30°C, 32°C, 37°C, 40°C, and so on.

[0058] When measuring the temperature of a subject, the temperature sensor is first used to detect the subject's temperature and obtain the target detection temperature. The maximum temperature less than the target detection temperature is then searched from the specified temperatures corresponding to the multiple circuit paths to obtain the first specified temperature. Furthermore, the minimum temperature greater than the target detection temperature is searched from the specified temperatures corresponding to the multiple circuit paths to obtain the second specified temperature. This is equivalent to finding the minimum temperature range corresponding to the target detection temperature from the specified temperatures corresponding to the multiple circuit paths. In other words, the minimum temperature range within which the target detection temperature falls is found from the different temperature values corresponding to the thermistor.

[0059] Afterwards, test signals are sent to the first circuit channel and the second circuit channel respectively to calculate the actual resistance values of the first circuit channel and the second circuit channel. It is understandable that since the actual resistance values of the first circuit channel and the second circuit channel are calculated in the actual detection environment of the body temperature detection of the object to be measured, this method can obtain the actual resistance values corresponding to the first circuit channel and the second circuit channel in the actual detection environment.

[0060] When the actual resistance values corresponding to the first circuit channel and the second circuit channel are calculated and compared with the ideal resistance values corresponding to the first circuit channel and the second circuit channel, the environmental error corresponding to the body temperature detection of the object to be measured and the system error due to instrument manufacturing reasons can be determined. Therefore, after the target detection temperature of the object to be measured is corrected using the actual resistance values and ideal resistance values corresponding to the first circuit channel and the second circuit channel, the body temperature of the object to be measured can be detected more accurately and reliably.

[0061] In this embodiment, a temperature sensor made of a thermistor and multiple circuit channels that can characterize the ideal resistance values of the thermistor at different specified temperatures are pre-installed in the body temperature detector. This is equivalent to creating multiple circuit channels with corresponding ideal resistance values of the thermistor at different temperatures. When measuring the body temperature of a subject to be measured, the temperature sensor is first used to detect the body temperature of the subject to be measured to obtain a target detection temperature. Then, the maximum temperature less than the target detection temperature and the minimum temperature greater than the target detection temperature are searched among the specified temperatures corresponding to the multiple circuit channels to obtain the first specified temperature and the second specified temperature. This is equivalent to finding the minimum temperature range within which the target detection temperature lies from the different temperature values corresponding to the thermistor. Afterwards, the first circuit channel and the second circuit channel corresponding to the first specified temperature and the second specified temperature are determined, and test signals are sent to the first circuit channel and the second circuit channel respectively to determine the actual resistance values of the first circuit channel and the second circuit channel. In this way, the ideal resistance value and the actual resistance value corresponding to the thermistor at different temperatures can be determined in the actual detection environment. Then, based on these values, the environmental error corresponding to the body temperature detection of the object to be measured and the systematic error due to instrument manufacturing reasons can be determined; finally, the target detection temperature is corrected according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel, so that the body temperature of the object to be measured can be detected more accurately and reliably.

[0062] Based on the above embodiment, this embodiment further illustrates and optimizes the technical solution. As a preferred implementation, the above step of sending a test signal to the first circuit channel and the second circuit channel respectively to determine the actual resistance values of the first circuit channel and the second circuit channel includes:

[0063] Sending a test signal to the first circuit channel and obtaining a first output signal of the first circuit channel;

[0064] The first output signal is power amplified and digital-to-analog converted to obtain an actual resistance value of the first circuit channel.

[0065] When determining the actual resistance value of the first circuit channel, a test signal can be first sent to the first circuit channel, and the output signal of the first circuit channel can be obtained to obtain a first output signal; then, the first output signal can be power amplified and the first output signal can be converted from analog to digital to obtain the output voltage of the first circuit channel; thereafter, the actual resistance value of the first circuit channel can be determined using the output voltage of the first circuit channel and the current signal sent to the first circuit channel.

[0066] Similarly, when the actual resistance value of the second circuit channel is to be determined, a test signal can be first sent to the second circuit channel, and the output signal of the second circuit channel can be obtained to obtain a second output signal; then, the second output signal can be power amplified and the second output signal can be analog-to-digital converted to obtain the output voltage of the second circuit channel; finally, the actual resistance value of the second circuit channel can be determined using the output voltage of the second circuit channel and the current signal sent to the second circuit channel.

[0067] It can be seen that, through the technical solution provided by this embodiment, the actual resistance values corresponding to the first circuit channel and the second circuit channel can be accurately calculated.

[0068] Based on the above embodiment, this embodiment further illustrates and optimizes the technical solution. As a preferred implementation, the above step of correcting the target detection temperature based on the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured includes:

[0069] Correcting the first specified temperature according to the actual resistance value and the ideal resistance value of the first circuit channel to obtain a first correction parameter, and correcting the second specified temperature according to the actual resistance value and the ideal resistance value of the second circuit channel to obtain a second correction parameter;

[0070] The target detection temperature is corrected using the first correction parameter and the second correction parameter to obtain the actual body temperature of the object to be measured.

[0071] When correcting the target detection temperature of the object to be measured based on the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel, the first specified temperature is first corrected based on the actual resistance value and the ideal resistance value of the first circuit channel to obtain a first correction parameter.

[0072] It is understood that since the actual configuration of the first circuit channel will inevitably deviate from the ideal configuration, once the actual and ideal resistance values of the first circuit channel are determined, the deviation that occurs when specifying the temperature represented by the first circuit channel can be determined. In other words, since the first circuit channel represents the ideal resistance value of the thermistor at the first specified temperature, if the actual resistance value of the first circuit channel is inconsistent with the ideal resistance value, then a deviation will inevitably occur when specifying the temperature represented by the first circuit channel.

[0073] To avoid introducing instrument errors and environmental errors into the body temperature detection results of the object to be measured, it is necessary to calibrate the first specified temperature based on the actual resistance value and ideal resistance value of the first circuit channel. Similarly, the second specified temperature corresponding to the second circuit channel can also be calibrated based on the actual resistance value and ideal resistance value of the second circuit channel. It is conceivable that after the first calibration parameter and the second calibration parameter are determined, the first calibration parameter and the second calibration parameter can be used to calibrate the target detection temperature of the object to be measured, thereby obtaining a more accurate and reliable body temperature of the object to be measured.

[0074] As a preferred embodiment, the above steps of: correcting the first specified temperature according to the actual resistance value and the ideal resistance value of the first circuit channel to obtain the first correction parameter, and correcting the second specified temperature according to the actual resistance value and the ideal resistance value of the second circuit channel to obtain the second correction parameter, include:

[0075] Determine the temperature corresponding to the actual resistance value of the first circuit channel according to a preset mapping relationship to obtain a first theoretical temperature; wherein the preset mapping relationship is a mapping relationship between the thermistor at different temperatures and the resistance value;

[0076] Determining a first correction parameter based on the first model and according to the first theoretical temperature and the actual resistance value and the ideal resistance value of the first circuit channel;

[0077] Determine the temperature corresponding to the actual resistance value of the second circuit channel according to the preset mapping relationship to obtain a second theoretical temperature;

[0078] Determining a second correction parameter based on the second model and according to the second theoretical temperature and the actual resistance value and the ideal resistance value of the second circuit channel;

[0079] Among them, the expression of the first model is:

[0080] A1=E1·(T2-t0)(T2-T1);

[0081] The expression of the second model is:

[0082] A2=E2·(t0-T1)(T2-T1);

[0083] Wherein, A1 is the first correction parameter, A2 is the second correction parameter, E1 is the difference between the first specified temperature and the first theoretical temperature, E2 is the difference between the second specified temperature and the second theoretical temperature, T1 is the first specified temperature, T2 is the second specified temperature, and t0 is the target detection temperature.

[0084] When determining the calibration parameters corresponding to the first and second circuit paths, the temperature corresponding to the actual resistance value of the first circuit path can be determined based on a preset mapping relationship to obtain a first theoretical temperature. The preset mapping relationship is a mapping relationship between the thermistor and its resistance value at different temperatures, that is, the preset mapping relationship can represent the change in the thermistor's resistance value at different temperatures.

[0085] When the first theoretical temperature corresponding to the first circuit channel is determined, the first theoretical temperature and the first specified temperature corresponding to the first circuit channel, the target detection temperature of the object to be measured, and the second specified temperature corresponding to the second circuit channel are substituted into the first model to determine the first correction parameter. Similarly, the second theoretical temperature corresponding to the actual resistance value of the second circuit channel can also be determined based on the preset mapping relationship. Thereafter, the second theoretical temperature and the second specified temperature corresponding to the second circuit channel, the target detection temperature of the object to be measured, and the first specified temperature corresponding to the first circuit channel are substituted into the second model to determine the second correction parameter.

[0086] As a preferred embodiment, the above step of correcting the target detected temperature using the first correction parameter and the second correction parameter to obtain the actual body temperature of the subject to be measured includes:

[0087] Based on the third model, the target detected temperature is corrected using the first correction parameter and the second correction parameter to obtain the actual body temperature of the subject to be measured;

[0088] Among them, the expression of the third model is:

[0089] t = t0 - A1 - A2;

[0090] Where t is the actual body temperature, t0 is the target detection temperature, A1 is the first correction parameter, and A2 is the second correction parameter.

[0091] After obtaining the first and second calibration parameters, the first and second calibration parameters, along with the target temperature, are simultaneously input into the third model for calculation, thereby determining a more accurate and reliable temperature value of the subject to be measured. It is conceivable that, after calibrating the target temperature of the subject to be measured using the first and second calibration parameters, errors caused by instrument errors and environmental errors can be eliminated from the target temperature of the subject to be measured, thereby obtaining a more accurate temperature value of the subject to be measured.

[0092] Obviously, through the technical solution provided by this embodiment, the actual body temperature of the object to be measured can be determined more accurately and reliably.

[0093] See Figure 2 , Figure 2 This is a structural diagram of a body temperature detection device provided by an embodiment of the present invention. The device is applied to a body temperature detector. The body temperature detector includes: a temperature sensor made of a thermistor and multiple circuit channels that can represent the ideal resistance value of the thermistor at different specified temperatures; the device includes:

[0094] The body temperature measurement module 21 is configured to detect the body temperature of the subject using a temperature sensor to obtain a target detection temperature, and determine a first circuit path corresponding to a first specified temperature and a second circuit path corresponding to a second specified temperature; wherein the first specified temperature is the maximum temperature of the specified temperatures corresponding to the multiple circuit paths that is less than the target detection temperature; and the second specified temperature is the minimum temperature of the specified temperatures corresponding to the multiple circuit paths that is greater than the target detection temperature.

[0095] a signal testing module 22, configured to send a test signal to the first circuit channel and the second circuit channel respectively, so as to determine actual resistance values of the first circuit channel and the second circuit channel;

[0096] The body temperature correction module 23 is used to correct the target detection temperature according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured.

[0097] A body temperature detection device provided by an embodiment of the present invention has the beneficial effects of the body temperature detection method disclosed above.

[0098] See Figure 3 , Figure 3This is a structural diagram of a body temperature detector provided in an embodiment of the present invention. The body temperature detector includes: a temperature sensor 11 made of a thermistor and multiple circuit channels 12 that can represent the ideal resistance value of the thermistor at different specified temperatures. The temperature sensor 11 and the multiple circuit channels 12 are connected to a controller 13. The controller 13 is provided with a display screen 14 for displaying body temperature data. The controller 13 is configured to perform the following steps:

[0099] Using a temperature sensor to detect the body temperature of the subject to be measured, obtaining a target detection temperature, and determining a first circuit path corresponding to a first specified temperature and a second circuit path corresponding to a second specified temperature; wherein the first specified temperature is the maximum temperature of the specified temperatures corresponding to the multiple circuit paths that is less than the target detection temperature; and the second specified temperature is the minimum temperature of the specified temperatures corresponding to the multiple circuit paths that is greater than the target detection temperature;

[0100] Sending a test signal to the first circuit channel and the second circuit channel respectively to determine actual resistance values of the first circuit channel and the second circuit channel;

[0101] The target detection temperature is corrected according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured.

[0102] In this embodiment, a body temperature detector compatible with the above-described body temperature detection method is provided. The body temperature detector comprises a temperature sensor 11 made of a thermistor, multiple circuit paths 12 capable of characterizing the ideal resistance values of the thermistor at different specified temperatures, a controller 13, and a display screen 14. Furthermore, the temperature sensor 11, multiple circuit paths 12, and display screen 14 are all connected to the controller 13. The actions performed by the controller 13 can be found in the relevant descriptions of the above-described embodiments and will not be repeated here.

[0103] Specifically, in order to enable the controller 13 to collect the data information fed back by the temperature sensor and each circuit channel, a signal acquisition circuit including a multiplexing switch and a signal processing circuit for processing the feedback data can also be set in the controller 13. In this way, when the controller 13 obtains the data fed back by the temperature sensor 11 or multiple circuit channels 12, it can directly obtain the detected temperature collected by the temperature sensor 11 and the data information fed back by the circuit channel 12 through the multiplexing switch. When the controller 13 determines the actual body temperature of the object to be measured through the above-mentioned body temperature detection method, the body temperature data of the object to be measured can be directly displayed on the display screen 14, which can further improve the user experience when using the body temperature detector.

[0104] In addition, in actual applications, a memory may be added to the controller 13 to store the body temperature data of the object to be measured, so that the user can monitor and observe his or her own body temperature data conveniently and quickly during subsequent use.

[0105] A body temperature detector provided by an embodiment of the present invention has the beneficial effects of the body temperature detection method disclosed above.

[0106] In order to enable those skilled in the art to more clearly understand the core content of the body temperature detection method provided by this application, the above content is described in detail here through a scenario embodiment. Figure 4 , Figure 4 This is a structural diagram of another body temperature detector provided by an embodiment of the present invention. Figure 4 The body temperature detector shown in the figure includes: a temperature sensor 11 made of a thermistor, a first circuit channel 121, a second circuit channel 122, a third circuit channel 123, a fourth circuit channel 124, a signal acquisition circuit 131, a signal processing circuit 132, a controller 13, a display screen 14 and a memory 15. Figure 4 In the body temperature detector shown, the signal acquisition circuit 131 and the signal processing circuit 132 are set on the peripheral circuit of the controller. Of course, the signal acquisition circuit 131 and the signal processing circuit 132 can also be integrated into the controller, which is not described in detail here.

[0107] In this embodiment, the first circuit channel 121 is designated to represent the ideal resistance value of the thermistor at 25°C, the second circuit channel 122 is designated to represent the ideal resistance value of the thermistor at 32°C, the third circuit channel 123 is designated to represent the ideal resistance value of the thermistor at 37°C, and the fourth circuit channel 124 is designated to represent the ideal resistance value of the thermistor at 45°C. The temperature values designated by the first circuit channel 121, the second circuit channel 122, the third circuit channel 123, and the fourth circuit channel 124 are respectively denoted by T 01 、T 02 、T 03 and T 04 According to data provided by thermistor manufacturers, the ideal resistance values of thermistors at 25°C, 32°C, 37°C, and 45°C are R1 = 2.252KΩ, R2 = 1.667KΩ, R3 = 1.355KΩ, and R4 = 0.984KΩ, respectively. Therefore, in practical applications, precision resistors with corresponding resistance values can be used to construct the first circuit channel 121, the second circuit channel 122, the third circuit channel 123, and the fourth circuit channel 124.

[0108] Then, test signals are sent to the first circuit channel 121, the second circuit channel 122, the third circuit channel 123, and the fourth circuit channel 124 respectively, and the output signals corresponding to the first circuit channel 121, the second circuit channel 122, the third circuit channel 123, and the fourth circuit channel 124 are amplified and analog-to-digital converted to determine the actual resistance values corresponding to the first circuit channel 121, the second circuit channel 122, the third circuit channel 123, and the fourth circuit channel 124.

[0109] When the actual resistance values corresponding to the first circuit channel 121, the second circuit channel 122, the third circuit channel 123, and the fourth circuit channel 124 are calculated, the theoretical temperature value T corresponding to the actual resistance values of the first circuit channel 121, the second circuit channel 122, the third circuit channel 123, and the fourth circuit channel 124 can be determined according to the mapping relationship between thermistor temperature and resistance. 11 、T 12 、T 13 and T 14 ; Afterwards, the theoretical temperature values corresponding to the actual resistance values of the first circuit channel 121, the second circuit channel 122, the third circuit channel 123, and the fourth circuit channel 124 are subtracted from 25°C, 32°C, 37°C, and 45°C, respectively, to obtain the calibration errors corresponding to the first circuit channel 121, the second circuit channel 122, the third circuit channel 123, and the fourth circuit channel 124.

[0110] Then, the temperature sensor is used to detect the body temperature of the object to be measured. If the body temperature of the object to be measured is detected to be t0 = 35°C, since t0 = 35°C is just within the temperature range represented by the second circuit channel 122 and the third circuit channel 123, then E = k2E2 + k3E3 can be used to correct the detected temperature t0 = 35°C of the object to be measured. Where k2 = (T 03 -t0) / (T 03 -T 02 )、k3=(t0-T 02 ) / (T 03 -T 02 ), E2=T 02 -T 12 、E3=T 03 -T 13 The actual body temperature of the object to be measured is finally calculated as: t = t0-E.

[0111] Obviously, the technical solution provided by this embodiment can accurately and reliably detect the body temperature of the object to be measured.

[0112] Correspondingly, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of a body temperature detection method disclosed above are implemented.

[0113] A computer-readable storage medium provided by an embodiment of the present invention has the beneficial effects of the body temperature detection method disclosed above.

[0114] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from the other embodiments. Reference can be made to the descriptions of the identical or similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and the relevant parts can be referred to the descriptions of the methods.

[0115] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0116] The above is a detailed introduction to the body temperature detection method, device, medium and body temperature detector provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A body temperature detection method, characterized in that: The method is applied to a body temperature detector, the body temperature detector comprising: a temperature sensor made of a thermistor and a plurality of circuit channels capable of characterizing that the thermistor has an ideal resistance value at different specified temperatures; the method comprising: The temperature sensor is used to detect the body temperature of the subject to be measured, obtain a target detection temperature, and determine a first circuit channel corresponding to a first specified temperature and a second circuit channel corresponding to a second specified temperature; wherein the first specified temperature is the maximum temperature less than the target detection temperature among the specified temperatures corresponding to the multiple circuit channels; the second specified temperature is the minimum temperature greater than the target detection temperature among the specified temperatures corresponding to the multiple circuit channels; and the temperature range formed by the first specified temperature and the second specified temperature is the minimum temperature range corresponding to the target detection temperature among the multiple circuit channels; sending a test signal to the first circuit path and the second circuit path respectively to determine actual resistance values of the first circuit path and the second circuit path; Correcting the target detection temperature according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured; The process of sending a test signal to the first circuit channel and the second circuit channel respectively to determine the actual resistance values of the first circuit channel and the second circuit channel includes: sending the test signal to the first circuit channel and acquiring a first output signal of the first circuit channel; performing power amplification processing on the first output signal and performing digital-to-analog conversion on the first output signal to obtain an actual resistance value of the first circuit channel; The thermistor is specifically an NTC thermistor; Multiple circuit channels are built with precision resistors; The process of correcting the target detection temperature according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured includes: Correcting the first specified temperature according to the actual resistance value and the ideal resistance value of the first circuit channel to obtain a first correction parameter, and correcting the second specified temperature according to the actual resistance value and the ideal resistance value of the second circuit channel to obtain a second correction parameter; Correcting the target detected temperature using the first correction parameter and the second correction parameter to obtain the actual body temperature of the subject to be measured; The process of correcting the first specified temperature according to the actual resistance value and the ideal resistance value of the first circuit channel to obtain a first correction parameter, and correcting the second specified temperature according to the actual resistance value and the ideal resistance value of the second circuit channel to obtain a second correction parameter includes: Determine the temperature corresponding to the actual resistance value of the first circuit channel according to a preset mapping relationship to obtain a first theoretical temperature; wherein the preset mapping relationship is a mapping relationship between the thermistor at different temperatures and the resistance value; determining the first correction parameter based on the first model and according to the first theoretical temperature and the actual resistance value and the ideal resistance value of the first circuit channel; determining a temperature corresponding to the actual resistance value of the second circuit channel according to the preset mapping relationship to obtain a second theoretical temperature; determining the second correction parameter based on the second model and according to the second theoretical temperature and the actual resistance value and the ideal resistance value of the second circuit channel; The expression of the first model is: A1=E1·(T2-t0) / (T2-T1); The expression of the second model is: A2=E2·(t0-T1) / (T2-T1); Wherein, A1 is the first correction parameter, A2 is the second correction parameter, E1 is the difference between the first specified temperature and the first theoretical temperature, E2 is the difference between the second specified temperature and the second theoretical temperature, T1 is the first specified temperature, T2 is the second specified temperature, and t0 is the target detection temperature; The process of correcting the target detection temperature using the first correction parameter and the second correction parameter to obtain the actual body temperature of the object to be measured includes: Based on the third model, and using the first correction parameter and the second correction parameter, the target detected temperature is corrected to obtain the actual body temperature of the subject to be measured; Wherein, the expression of the third model is: t = t0 - A1 - A2; Wherein, t is the actual body temperature, t0 is the target detection temperature, A1 is the first correction parameter, and A2 is the second correction parameter.

2. A body temperature detection device, characterized in that: Applicable to a body temperature detector, the body temperature detector comprising: a temperature sensor made of a thermistor and a plurality of circuit channels capable of characterizing the ideal resistance value of the thermistor at different specified temperatures; the device comprises: a body temperature measurement module, configured to detect the body temperature of the subject using the temperature sensor, obtain a target detection temperature, and determine a first circuit channel corresponding to a first specified temperature and a second circuit channel corresponding to a second specified temperature; wherein the first specified temperature is a maximum temperature less than the target detection temperature among the specified temperatures corresponding to the multiple circuit channels; the second specified temperature is a minimum temperature greater than the target detection temperature among the specified temperatures corresponding to the multiple circuit channels; and a temperature range formed by the first specified temperature and the second specified temperature is a minimum temperature range corresponding to the target detection temperature among the multiple circuit channels; a signal testing module, configured to send a test signal to the first circuit channel and the second circuit channel respectively, so as to determine actual resistance values of the first circuit channel and the second circuit channel; a body temperature correction module, configured to correct the target detection temperature according to the actual resistance values and the ideal resistance values of the first circuit channel and the second circuit channel to obtain the actual body temperature of the subject to be measured; The process of sending a test signal to the first circuit channel and the second circuit channel respectively to determine the actual resistance values of the first circuit channel and the second circuit channel includes: sending the test signal to the first circuit channel and acquiring a first output signal of the first circuit channel; performing power amplification processing on the first output signal and performing digital-to-analog conversion on the first output signal to obtain an actual resistance value of the first circuit channel; The thermistor is specifically an NTC thermistor; Multiple circuit channels are built with precision resistors; The process of correcting the target detection temperature according to the actual resistance value and the ideal resistance value of the first circuit channel and the second circuit channel to obtain the actual body temperature of the object to be measured includes: Correcting the first specified temperature according to the actual resistance value and the ideal resistance value of the first circuit channel to obtain a first correction parameter, and correcting the second specified temperature according to the actual resistance value and the ideal resistance value of the second circuit channel to obtain a second correction parameter; Correcting the target detected temperature using the first correction parameter and the second correction parameter to obtain the actual body temperature of the subject to be measured; The process of correcting the first specified temperature according to the actual resistance value and the ideal resistance value of the first circuit channel to obtain a first correction parameter, and correcting the second specified temperature according to the actual resistance value and the ideal resistance value of the second circuit channel to obtain a second correction parameter includes: Determine the temperature corresponding to the actual resistance value of the first circuit channel according to a preset mapping relationship to obtain a first theoretical temperature; wherein the preset mapping relationship is a mapping relationship between the thermistor at different temperatures and the resistance value; determining the first correction parameter based on the first model and according to the first theoretical temperature and the actual resistance value and the ideal resistance value of the first circuit channel; determining a temperature corresponding to the actual resistance value of the second circuit channel according to the preset mapping relationship to obtain a second theoretical temperature; determining the second correction parameter based on the second model and according to the second theoretical temperature and the actual resistance value and the ideal resistance value of the second circuit channel; The expression of the first model is: A1=E1·(T2-t0) / (T2-T1); The expression of the second model is: A2=E2·(t0-T1) / (T2-T1); Wherein, A1 is the first correction parameter, A2 is the second correction parameter, E1 is the difference between the first specified temperature and the first theoretical temperature, E2 is the difference between the second specified temperature and the second theoretical temperature, T1 is the first specified temperature, T2 is the second specified temperature, and t0 is the target detection temperature; The process of correcting the target detection temperature using the first correction parameter and the second correction parameter to obtain the actual body temperature of the object to be measured includes: Based on the third model, and using the first correction parameter and the second correction parameter, the target detected temperature is corrected to obtain the actual body temperature of the subject to be measured; Wherein, the expression of the third model is: t = t0 - A1 - A2; Wherein, t is the actual body temperature, t0 is the target detection temperature, A1 is the first correction parameter, and A2 is the second correction parameter.

3. A body temperature detector, characterized in that: include: A temperature sensor made of a thermistor and multiple circuit channels that can characterize the ideal resistance value of the thermistor at different specified temperatures, wherein the temperature sensor and multiple circuit channels are connected to a controller, and the controller is provided with a display screen for displaying body temperature data; wherein the controller is used to perform a body temperature detection method as described in claim 1.

4. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the body temperature detection method according to claim 1 are implemented.

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