CN113503987A - Method and system for optimizing accuracy of built-in temperature sensor - Google Patents
Method and system for optimizing accuracy of built-in temperature sensor Download PDFInfo
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- CN113503987A CN113503987A CN202110712459.4A CN202110712459A CN113503987A CN 113503987 A CN113503987 A CN 113503987A CN 202110712459 A CN202110712459 A CN 202110712459A CN 113503987 A CN113503987 A CN 113503987A
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- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
Abstract
The invention provides a method for optimizing the accuracy of a built-in temperature sensor, which is suitable for box body equipment internally provided with the temperature sensor and comprises the following steps: acquiring the actual measurement temperature of a temperature sensor and the real-time temperature of a heat generating device in box body equipment; acquiring a prestored heat production coefficient according to the operation condition of the equipment; according to the actually measured temperature of the temperature sensor and the real-time temperature of the heat generating device in the box body equipment, the calibration temperature of the temperature sensor is calculated and determined by utilizing the heat generating coefficient, and the external environment temperature of the environment where the box body equipment is located is obtained. The method can ensure that the built-in temperature sensor can correctly obtain the real data of the external environment temperature in the equipment.
Description
Technical Field
The invention relates to the technical field of temperature detection, in particular to a method and a system for optimizing accuracy of a built-in temperature sensor.
Background
With the development of technology, more and more additional functions are embedded in a plurality of devices applied to people in daily life, and for example, the intelligent sound box applied to people more and more at present has the functions of temperature detection, song on demand, road condition query, alarm clock and the like. Wherein, the temperature detects the function because intelligent audio amplifier is confined box, and temperature sensor sets up inside the box, and there is built-in CPU heat production, structure heat dissipation inside the box in intelligent audio amplifier working process, and this will influence temperature sensor to ambient temperature's monitoring, leads to acquireing inaccurately to ambient temperature.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the present invention provides a method and a system for optimizing the accuracy of a built-in temperature sensor, which obtain the temperature of the external environment according to the measured temperature of the temperature sensor and the real-time temperature of the heat generating device inside the box device by using the relationship between the temperature rise of the temperature sensor and the temperature difference between the real-time temperature of the heat generating device inside the box device and the external environment.
Specifically, the method for optimizing the accuracy of the built-in temperature sensor is applicable to box equipment with the temperature sensor arranged inside, and comprises the following steps:
acquiring the measured temperature of the temperature sensor and the real-time temperature of a heat generating device in the box body equipment; acquiring a prestored heat production coefficient according to the operation condition of the equipment; and calculating and determining the calibration temperature of the temperature sensor by utilizing the heat generation coefficient according to the actually measured temperature of the temperature sensor and the real-time temperature of the heat generating device in the box body equipment to obtain the external environment temperature of the environment where the box body equipment is located.
Further, the process of determining the heat generation coefficient includes:
acquiring the measured temperature of the temperature sensor, the real-time temperature of a heat generating device inside the box body equipment and the external environment temperature under different working conditions; calculating the heat production coefficient; and storing a corresponding relation list of the heat generation coefficient and the working condition. The heat production coefficient corresponding to the operation condition can be obtained by searching the corresponding relation list.
The heat generation coefficient is calculated by the following formula:
wherein k is the heat generation coefficient, TsensorIs the measured temperature of the temperature sensor; t isoutIs the ambient temperature, ThdThe real-time temperature of the heat-generating device in the box body equipment.
The temperature sensor is arranged in the area far away from the heat-generating device in the box body equipment; or, the air-conditioning device is arranged in an area where the box body device is communicated with outside air. The influence of the internal temperature of the equipment on the measured temperature of the temperature sensor can be reduced.
In some embodiments, further comprising: the temperature sensor is a thermistor;
the obtaining of the measured temperature of the temperature sensor comprises: measuring voltage values of analog signal formats at two ends of the thermistor according to the impedance figures of the thermistor; and converting the voltage values of the two ends of the thermistor in the analog signal format into voltage values in the digital signal format, and obtaining the actually measured temperature of the temperature sensor according to the voltage values in the digital signal format.
The calculation formula of the calibration temperature of the temperature sensor is as follows:
wherein, Tout′A calibration temperature for the temperature sensor; t issensorIs the measured temperature of the temperature sensor; k is the heat generation coefficient; t ishdThe real-time temperature of the heat-generating device in the box body equipment.
The invention also provides a system for optimizing the accuracy of the built-in temperature sensor, which is suitable for box body equipment internally provided with the temperature sensor and comprises the following components:
an acquisition module: the temperature sensor is used for acquiring the measured temperature of the temperature sensor and the real-time temperature of a heat generating device in the box body equipment;
a processing module: the device is used for acquiring a prestored heat production coefficient according to the operating condition of the box body equipment;
a calculation module: and calculating and determining the calibration temperature of the temperature sensor by utilizing the heat generation coefficient obtained by the processing module according to the actually measured temperature of the temperature sensor and the real-time temperature of the heat generation device in the box body equipment to obtain the external environment temperature of the environment where the box body equipment is located.
Further, the processing module includes:
the storage unit is used for storing a corresponding relation list of the heat generation coefficient and the working condition;
the determining process of the heat production coefficient comprises the following steps:
acquiring the measured temperature of the temperature sensor, the real-time temperature of a heat generating device inside the box body equipment and the external environment temperature under different working conditions; calculating the heat production coefficient; and storing a corresponding relation list of the heat generation coefficient and the working condition.
The heat generation coefficient is calculated by the following formula:
wherein k is the heat generation coefficient, TsensorIs the measured temperature of the temperature sensor; t isoutIs the ambient temperature, ThdThe real-time temperature of the heat-generating device in the box body equipment.
The temperature sensor is arranged in a region far away from the heating device in the box body equipment; or, the air-conditioning device is arranged in an area where the box body device is communicated with outside air. The influence of the internal temperature of the equipment on the measured temperature of the temperature sensor can be reduced.
In summary, the method for optimizing the accuracy of the built-in temperature sensor of the present invention obtains the temperature of the external environment according to the measured temperature of the temperature sensor and the real-time temperature of the heat generating device inside the box device by using the relationship between the temperature rise of the temperature sensor and the temperature difference between the real-time temperature of the heat generating device inside the box device and the external environment. The method can solve the problem that the temperature and humidity of the built-in temperature and humidity sensor cannot be accurately obtained due to external factors such as heat production of heat-producing devices in the box body equipment, structural heat dissipation and the like. The system applying the method can ensure that the built-in temperature sensor can correctly obtain the real data of the external environment temperature in the equipment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for optimizing accuracy of a built-in temperature sensor according to the present invention;
FIG. 2 is a schematic flow chart illustrating the process of obtaining the corresponding heat generation coefficient according to the operation condition of the equipment;
FIG. 3 is a block diagram of a system for optimizing accuracy of a built-in temperature sensor according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention obtains through analysis: the temperature rise of a built-in temperature sensor of box equipment with a temperature sensor arranged inside such as an intelligent sound box and the like and the temperature difference between the real-time temperature of a heat generating device inside the box equipment and the external environment have a certain relation. According to the method for optimizing the accuracy of the built-in temperature sensor, the relationship between the temperature rise of the built-in temperature sensor obtained through analysis and the real-time temperature of the heat-generating device in the box body equipment and the temperature difference of the external environment is utilized, the accurate external environment temperature is obtained according to the actually measured temperature of the temperature sensor and the real-time temperature of the heat-generating device in the box body equipment, and the problem that the temperature of the built-in temperature sensor is inaccurate to obtain due to external factors such as heat generation of the heat-generating device in the box body equipment, structural heat dissipation and the like is solved.
Example 1
The embodiment provides a method for optimizing accuracy of a built-in temperature sensor, which is suitable for box equipment such as a smart speaker and the like in which the temperature sensor is arranged, and referring to the attached drawing 1 in the specification, the method for optimizing accuracy of the built-in temperature sensor comprises the following steps:
s1: and acquiring the actual measurement temperature of the temperature sensor and the real-time temperature of the heat generating device in the box body equipment. Preferably, in order to reduce the influence of the internal temperature of the equipment on the measured temperature of the temperature sensor, the temperature sensor is arranged in the area, far away from the internal heat generating device, in the box body equipment; or, the air-conditioning device is arranged in a region where the box body of the box body device is communicated with the outside air. In a specific embodiment, the heat generating device inside the box device is a CPU.
In some embodiments, the temperature sensor is configured as a thermistor, and the obtaining of the measured temperature of the temperature sensor comprises: digitally measuring the voltage values of analog signal formats at two ends of the thermistor according to the impedance of the thermistor; and converting the voltage values of the two ends of the thermistor in the analog signal format into voltage values in the digital signal format, and obtaining the actually measured temperature of the temperature sensor according to the voltage values in the digital signal format.
S2: and acquiring a prestored heat production coefficient according to the operation condition of the box body equipment.
The heat generation coefficient represents the relationship between the temperature rise of the temperature sensor and the real-time temperature of the heat generating device in the box body equipment and the temperature difference of the external environment, the real-time temperature of the heat generating device in the box body equipment and the temperature difference of the external environment cause heat transfer, the larger the temperature difference is, the faster the heat transfer rate is, and the higher the temperature rise of the temperature sensor is caused. The heat production coefficient is calculated by the formula
Wherein k is a heat generation coefficient and is a variable non-fixed value; t issensorIs the measured temperature of the temperature sensor; t isoutIs the outside ambient temperature; t issensorMinus ToutRepresents the temperature rise of the temperature sensor; t ishdThe real-time temperature of the heat-generating device in the box body equipment.
Referring to the attached fig. 2 of the specification, obtaining the corresponding heat generation coefficient according to the operation condition of the equipment comprises: the method comprises the steps of pre-calculating heat generation coefficients under different working conditions, pre-storing corresponding relation lists of the heat generation coefficients and the different working conditions, obtaining operation conditions of equipment, and obtaining the corresponding heat generation coefficients under the operation conditions by searching the corresponding relation lists. The process of determining the heat generation coefficient includes: acquiring the actual measurement temperature of the temperature sensor, the real-time temperature of the heat-generating device in the box body equipment and the external environment temperatureUnder the condition of formula
Calculating a heat generation coefficient, for example, calculating a corresponding heat generation coefficient when the measured temperature of the temperature sensor reaches different temperature intervals, calculating a corresponding heat generation coefficient when the real-time temperature of a heat generation device inside the box equipment reaches different temperature intervals, and calculating a corresponding heat generation coefficient when the equipment runs at different time; the equipment stores a corresponding relation list of the heat generation coefficient and the working condition.
Specifically, the measured temperature of the temperature sensor is taken as a temperature interval every 5 ℃, heat generation coefficient calculation is carried out, the heat generation coefficient and the interval of the measured temperature of the temperature sensor are correspondingly stored, and the equipment searches the corresponding heat generation coefficient according to the measured temperature of the temperature sensor during application; or taking the real-time temperature of the heat-generating device in the box body equipment every 5 ℃ as a temperature interval, calculating a heat-generating coefficient, correspondingly storing the heat-generating coefficient and the interval of the real-time temperature of the heat-generating device in the box body equipment, and searching the corresponding heat-generating coefficient by the equipment according to the real-time temperature of the heat-generating device in the box body equipment during application; or, the equipment performs heat production coefficient calculation once every 15 minutes, the heat production coefficient and the equipment operation time interval are correspondingly stored, and the equipment searches the corresponding heat production coefficient according to the operation time when in application. In some embodiments, an interval between a heat generation coefficient and an actually measured temperature of the temperature sensor, and an interval between the heat generation coefficient and a real-time temperature of a heat generation device inside the box device are stored in one device, a first choice when the device searches for the heat generation coefficient is to search for the corresponding heat generation coefficient according to the real-time temperature of the heat generation device inside the box device, and if the real-time temperature of the heat generation device inside the box device is abnormal, the corresponding heat generation coefficient is searched according to the actually measured temperature of the temperature sensor. The corresponding heat generation coefficient can also be calculated by combining the influence factors of different working conditions, for example, the corresponding heat generation coefficient is calculated by combining the real-time temperature of the heat generation device in the box body equipment and the running time of the equipment. In the actual heat production coefficient calculation process, influence factors of different working conditions can be set, the heat production coefficient is calculated and then stored correspondingly with the influence factors, the heat production coefficient is searched correspondingly according to the real-time working conditions when being obtained, and only a plurality of conditions are listed as references.
S3: and calculating and determining the calibration temperature of the temperature sensor by utilizing the acquired heat generation coefficient according to the actually measured temperature of the temperature sensor and the real-time temperature of the heat generation device inside the box body equipment to obtain the external environment temperature of the environment where the box body equipment is located.
The calculation formula of the calibration temperature of the temperature sensor can be obtained according to the calculation formula of the heat generation coefficient:
wherein, Tout′A calibration temperature for the temperature sensor; t issensorIs the measured temperature of the temperature sensor; k is a heat generation coefficient; t ishdThe real-time temperature of the heat-generating device in the box body equipment. T issensorAnd ThdAll can accurately acquire through box equipment, utilize the calorification coefficient of acquireing can calculate the calibration temperature of confirming temperature sensor to obtain external environment temperature.
In some embodiments, the box device comprises a structural component with functions of calculation and the like, and the method for optimizing the accuracy of the built-in temperature sensor can be implemented in the box device.
In some real-time examples, the box body equipment acquires temperature, the acquired measured temperature of the temperature sensor and the real-time temperature of a heat generating device in the box body equipment are sent to other equipment connected with the box body equipment for calculation, and a heat generating coefficient is also stored in the other equipment connected with the box body equipment; and after the calibration temperature of the temperature sensor is calculated, the calibration temperature is sent to the box body equipment, and the box body equipment displays and/or broadcasts the calibration temperature of the temperature sensor.
Example 2
The embodiment provides a system for optimizing accuracy of a built-in temperature sensor, and the system is suitable for box body equipment such as intelligent sound boxes and the like with the temperature sensor arranged inside. Referring to the specification and the attached fig. 3, the system for optimizing the accuracy of the built-in temperature sensor of the embodiment comprises:
an acquisition module: the real-time temperature acquisition device is used for acquiring the actually measured temperature of the temperature sensor and the real-time temperature of a heat-generating device in the box body equipment. Preferably, in order to reduce the influence of the internal temperature of the equipment on the measured temperature of the temperature sensor, the temperature sensor is arranged in the area, far away from the internal heat generating device, in the box body equipment; or the air-conditioning device is arranged at the position where the box body of the box body equipment is communicated with the outside air. In a specific embodiment, the heat generating device inside the box device is a CPU.
In some embodiments, the system further comprises a temperature sensor detection module, and the acquisition module is connected with the temperature sensor detection module. The temperature sensor is a thermistor, and the temperature sensor detection module comprises: a measurement unit: measuring the voltage values of analog signal formats at two ends of the thermistor according to the impedance value of the thermistor; and, an analog-to-digital conversion unit: and the measuring unit is connected to convert the voltage values of the two ends of the thermistor in the analog signal format into voltage values in the digital signal format, and the actually measured temperature of the temperature sensor is obtained according to the voltage values in the digital signal format.
A processing module: the method is used for acquiring the prestored heat production coefficient according to the operation condition of the box body equipment. The method comprises the following steps:
a storage unit: and the method is used for storing a corresponding relation list of the heat generation coefficient and the working condition. The heat production coefficient is calculated in advance, and specifically, the calculation process of the heat production coefficient comprises the following steps: the real-time temperature and the external environment temperature of the measured temperature of the temperature sensor, the internal heat-generating device of the box body equipment are obtained, and the real-time temperature and the external environment temperature are obtained according to the formula under different working conditions:
calculating the heat generation coefficient, for example, calculating the corresponding heat generation coefficient when the measured temperature of the temperature sensor reaches different temperature intervals, calculating the corresponding heat generation coefficient when the real-time temperature of the heat generation device inside the box device reaches different temperature intervals, and calculating the corresponding heat generation coefficient when the device runs at different time intervals. The storage unit stores a corresponding relation list of the heat generation coefficient and the working condition.
A searching unit: and the method is used for searching the corresponding relation list according to the equipment operation condition to obtain the heat production coefficient corresponding to the operation condition.
A calculation module: and calculating the external environment temperature of the environment where the equipment is located by using the heat generation coefficient obtained by the processing module.
The calculation formula of the calibration temperature of the temperature sensor can be obtained according to the calculation formula of the heat generation coefficient:
wherein, Tout′A calibration temperature for the temperature sensor; t issensorIs the measured temperature of the temperature sensor; k is a heat generation coefficient; t ishdFor real-time temperature, T, of heat-generating devices inside the tank apparatussensorAnd ThdAll can accurately obtain through box equipment, utilize the calorification coefficient of acquireing can calculate external environment temperature.
Preferably, the display device further comprises a display module: for displaying the calibrated temperature of the computationally determined temperature sensor.
Voice broadcast module: when the equipment receives the temperature inquiry instruction, the equipment calculates the external environment temperature in real time, and the voice broadcasting module acquires the temperature condition for broadcasting.
In some embodiments, further comprising: an alarm clock module: when the alarm clock module starts, the equipment automatically calculates the external environment temperature, and the voice broadcasting module automatically acquires the temperature condition for broadcasting, so that a user can timely know the temperature condition while ringing the alarm clock.
In summary, the present invention provides a method for optimizing accuracy of a built-in temperature sensor, which obtains an external environment temperature according to an actual temperature measured by the temperature sensor and a real-time temperature of a heat generating device inside a box device by using a relationship between a temperature rise of the temperature sensor and a temperature difference between the real-time temperature of the heat generating device inside the box device and the external environment. The method can solve the problem that the temperature and humidity of the built-in temperature and humidity sensor cannot be accurately obtained due to external factors such as heat production of heat-producing devices in the box body equipment, structural heat dissipation and the like. The system applying the method can ensure that the built-in temperature sensor can correctly display the real data of the external environment temperature in the equipment.
The above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and various modifications other than the above-mentioned embodiments may be made, and the technical features of the above-mentioned embodiments may be combined with each other, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a method for optimizing built-in temperature sensor degree of accuracy, is applicable to the box equipment of inside setting temperature sensor which characterized in that includes:
acquiring the measured temperature of the temperature sensor and the real-time temperature of a heat generating device in the box body equipment;
acquiring a prestored heat production coefficient according to the operating condition of the box body equipment;
and calculating and determining the calibration temperature of the temperature sensor by utilizing the heat generation coefficient according to the actually measured temperature of the temperature sensor and the real-time temperature of the heat generating device in the box body equipment to obtain the external environment temperature of the environment where the box body equipment is located.
2. The method of optimizing accuracy of a built-in temperature sensor of claim 1, wherein determining the heat generation coefficient comprises:
acquiring the measured temperature of the temperature sensor, the real-time temperature of a heat generating device inside the box body equipment and the external environment temperature under different working conditions;
calculating the heat production coefficient;
and storing a corresponding relation list of the heat generation coefficient and the working condition.
3. The method for optimizing accuracy of a built-in temperature sensor according to claim 2, wherein the heat generation coefficient is calculated by the formula:
wherein k is the heat generation coefficient, TsensorIs the measured temperature of the temperature sensor; t isoutIs the outside ringAmbient temperature, ThdThe real-time temperature of the heat-generating device in the box body equipment.
4. The method of optimizing accuracy of a built-in temperature sensor of claim 1, wherein the temperature sensor is disposed in a region of the case apparatus remote from a heat generating device;
or, the air-conditioning device is arranged in an area where the box body device is communicated with outside air.
5. The method of optimizing accuracy of a built-in temperature sensor of claim 1, further comprising: the temperature sensor is a thermistor;
the obtaining of the measured temperature of the temperature sensor comprises:
measuring voltage values of analog signal formats at two ends of the thermistor according to the impedance figures of the thermistor;
and converting the voltage values of the two ends of the thermistor in the analog signal format into voltage values in the digital signal format, and obtaining the actually measured temperature of the temperature sensor according to the voltage values in the digital signal format.
6. The method for optimizing accuracy of a built-in temperature sensor according to claim 1, wherein a calculation formula of a calibration temperature of the temperature sensor is:
wherein, Tout' is a calibration temperature of the temperature sensor; t issensorIs the measured temperature of the temperature sensor; k is the heat generation coefficient; t ishdThe real-time temperature of the heat-generating device in the box body equipment.
7. The utility model provides a system for optimize built-in temperature sensor degree of accuracy, is applicable to inside box equipment that sets up temperature sensor, a serial communication port, includes:
an acquisition module: the temperature sensor is used for acquiring the measured temperature of the temperature sensor and the real-time temperature of a heat generating device in the box body equipment;
a processing module: the device is used for acquiring a prestored heat production coefficient according to the operating condition of the box body equipment;
a calculation module: and calculating and determining the calibration temperature of the temperature sensor by utilizing the heat generation coefficient obtained by the processing module according to the actually measured temperature of the temperature sensor and the real-time temperature of the heat generation device in the box body equipment to obtain the external environment temperature of the environment where the box body equipment is located.
8. The system for optimizing accuracy of a built-in temperature sensor of claim 7, wherein the processing module comprises:
the storage unit is used for storing a corresponding relation list of the heat generation coefficient and the working condition;
the determining process of the heat production coefficient comprises the following steps:
acquiring the measured temperature of the temperature sensor, the real-time temperature of a heat generating device inside the box body equipment and the external environment temperature under different working conditions;
calculating the heat production coefficient;
and storing a corresponding relation list of the heat generation coefficient and the working condition.
9. The system for optimizing accuracy of a built-in temperature sensor according to claim 8, wherein the heat generation coefficient is calculated by the formula:
wherein k is the heat generation coefficient, TsensorIs the measured temperature of the temperature sensor; t isoutIs the ambient temperature, ThdThe real-time temperature of the heat-generating device in the box body equipment.
10. The system for optimizing accuracy of a built-in temperature sensor of claim 7, wherein the temperature sensor is disposed in a region of the case apparatus remote from a heat generating device;
or, the air-conditioning device is arranged in an area where the box body device is communicated with outside air.
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| JP2008197011A (en) * | 2007-02-14 | 2008-08-28 | Denso Corp | Calibration device for device with built-in sensor |
| WO2009119116A1 (en) * | 2008-03-27 | 2009-10-01 | パナソニック株式会社 | Environment temperature measuring method, liquid sample measuring method, and measuring device |
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