CN114322196B - Temperature correction method and device for temperature sensor built in device and air conditioner - Google Patents
Temperature correction method and device for temperature sensor built in device and air conditioner Download PDFInfo
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- CN114322196B CN114322196B CN202111590916.3A CN202111590916A CN114322196B CN 114322196 B CN114322196 B CN 114322196B CN 202111590916 A CN202111590916 A CN 202111590916A CN 114322196 B CN114322196 B CN 114322196B
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- 238000012937 correction Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 20
- 230000007613 environmental effect Effects 0.000 claims description 15
- 239000002918 waste heat Substances 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 13
- 230000020169 heat generation Effects 0.000 claims description 6
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Abstract
The invention discloses a temperature correction method and device of a built-in temperature sensor of a device and an air conditioner. The temperature correction method of the built-in temperature sensor of the device comprises the following steps: a change curve model of the temperature detected by a built-in temperature sensor in the process of powering off and then powering on the device is established in advance; when the power-on time of the device is less than or equal to the preset time, obtaining a power-down power-on correction value according to the change rate of the temperature detected by the built-in temperature sensor and by combining a change curve model; and correcting the temperature detected by the built-in temperature sensor by adding the power-down and power-up correction value. According to the invention, by establishing the temperature change curve model in the power-down and power-up processes, the temperature of the built-in temperature sensor can be corrected under the condition of not counting the power-down time, so that the detection result is more accurate.
Description
Technical Field
The invention relates to the technical field of temperature correction, in particular to a temperature correction method for a built-in temperature sensor of a device.
Background
The temperature sensor is a detecting device provided in many apparatuses, and the temperature detected by the temperature sensor is generally affected by the change of the apparatus itself and the ambient temperature.
Taking a temperature controller (abbreviated as a thermostat) as an example, the thermostat is used as a controller of a tail end air plate, and is one of the most direct means for a user to control the indoor temperature. Because the temperature controller is small in size, heat generated by some devices during working can affect the measurement of the environment temperature of the built-in temperature sensor. The temperature controller measures the degree of accuracy of ambient temperature, will directly influence accuse temperature effect, and then influences user's comfort level.
In order to solve the temperature deviation problem, a set of correction schemes is often formulated for correction. According to the temperature compensation method disclosed by the prior art with the publication number of CN110554718A, the problem that the compensation possibly has an accumulated state during power failure and power on is solved by recording the power failure time length and the influence of the change of the condition of the device on temperature detection during different power failure time lengths, but once many devices are powered off, all devices are in a power off state, and the time length between the current time and the power failure time cannot be recorded after the power failure, so that the prior art cannot be widely applied.
Therefore, how to provide a device suitable for timing after power failure is an urgent technical problem to be solved for a temperature correction method of a built-in temperature sensor.
Disclosure of Invention
The invention provides a temperature correction method and device of a built-in temperature sensor and an air conditioner, and aims to solve the technical problem that the temperature detected by the built-in temperature sensor cannot be corrected under the condition that power is lost and then powered on because the device in the prior art does not count time after power is lost.
The invention provides a temperature correction method of a built-in temperature sensor of a device, which comprises the following steps:
a change curve model of the temperature detected by a built-in temperature sensor in the process of powering off and then powering on the device is established in advance;
when the power-on time of the device is less than or equal to the preset time, obtaining a power-down power-on correction value according to the change rate of the temperature detected by the built-in temperature sensor and by combining a change curve model;
and correcting the temperature detected by the built-in temperature sensor by adding the power-down and power-up correction value.
Further, the change curve model is obtained by the following steps: and respectively establishing different change curve models by recording the temperature measured by the built-in temperature sensor in the process of powering on the device again after different power-down time.
Further, the power-down and power-up correction value is obtained by the following steps:
pre-recording a change curve of the waste heat temperature of the device after power failure;
when the device is electrified within a preset time length, comparing the change rates of the temperatures detected by the built-in temperature sensors to obtain a corresponding change curve model, and calculating the waste heat temperature of the device when the device is electrified;
and taking the waste heat temperature as a power-off and power-on correction value.
Further, still include: and after the device is powered on, adding a ring temperature correction value generated by different environmental temperatures to the temperature detected by the built-in temperature sensor, and/or adding a heating correction value generated by heating of a device of the device to the temperature detected by the built-in temperature sensor.
Further, the corrected value of the environmental temperature is obtained through the following steps:
the device is placed at different environmental temperatures in advance, and a built-in temperature sensor is adopted for measurement;
comparing the measurement result with the actual ambient temperature;
obtaining the change rule of the difference between the measurement result and the actual environment temperature at different environment temperatures;
dividing temperature intervals according to the change rule, and obtaining the environment temperature correction value corresponding to each temperature interval;
and when the built-in temperature sensor detects the temperature, selecting a corresponding environment temperature correction value according to the temperature area to which the temperature detected by the built-in temperature sensor belongs.
Further, the heat generation correction value is obtained by:
pre-recording that the device is heated in different time periods after the device is powered on, and measuring by adopting the built-in temperature sensor;
comparing the measurement result with the actual ambient temperature;
obtaining the change rule of the difference value between the measurement result and the actual environment temperature in different time periods after electrification;
dividing time intervals according to the change rule, and obtaining the heating correction value corresponding to each time interval;
and selecting a corresponding heating correction value according to a time interval to which the current time length after electrification belongs when the built-in temperature sensor detects.
The device with the built-in temperature sensor comprises a controller, wherein the controller corrects the temperature detected by the built-in temperature sensor of the device by adopting the temperature correction method of the built-in temperature sensor of the device.
Further, the device comprises a temperature controller.
The air conditioner provided by the invention adopts the device in the technical scheme.
According to the invention, because a temperature change curve model in the power-down and power-up process is established, the temperature change rule obtained by experiments is used for correcting the environmental temperature measured after power-up in combination with the temperature interval and the power-up time interval, the influence of a heating device of the device on the environmental temperature measured by the built-in temperature sensor is solved, and especially the influence of a timing module on the corrected value of the temperature detected by the built-in temperature sensor during the timing of the power-down time after the power-down of the device is lacked, the measured environmental temperature is more accurate, and the temperature control effect and the comfort level are improved.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is a graph of the temperature change of heat generated by a device powering down and up in accordance with an embodiment of the present invention.
FIG. 2 is a comparison graph of the detection result affected by the ambient temperature and the actual value according to an embodiment of the present invention.
Fig. 3 is a comparison graph of the detection result affected by the power-on duration and the actual value according to an embodiment of the present invention.
FIG. 4 is a flow chart of the use of an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the invention, and does not imply that every embodiment of the invention must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
According to the temperature correction method for the built-in temperature sensor of the device, when the device is powered on after power failure and the influence of waste heat emitted by devices of the device on the built-in temperature sensor of the device is processed, a change curve model of the temperature detected by the built-in temperature sensor in the power failure and power failure process of the device needs to be established in advance.
The change curve model is specifically a change curve model which is built in with the temperature measured by the temperature sensor and corresponds to different power-down time according to the measured temperature in the process of re-electrifying the device after different power-down time. As shown in fig. 1, after the apparatus is powered down, when the heating device of the apparatus is not powered on, the temperature of the waste heat of the heating device will gradually decrease with time and finally approach to the minimum value, but in the process, for example, at the time point t1, the heating device of the apparatus is powered on at the time, the heating device of the apparatus will start to heat, the temperature of the waste heat which originally decreases with time will start to increase, and finally reach a maximum value as the temperature change curve starting at the time point t1, and if it is the time point t2, the temperature of the waste heat of the device will change as the temperature change curve starting at the time point t2 and finally approach to the maximum value.
When the temperature of the waste heat of the device is closer to the built-in temperature sensor, the temperature detected by the built-in temperature sensor of the device is affected, and therefore, a change curve model of the temperature measured by the built-in temperature sensor needs to be recorded in the process of starting to electrify again at different power-down time (namely power-down time). When the device is just powered on, namely the power-on time of the device is judged to be less than or equal to the preset time length, a power-down power-on correction value is obtained by combining a change curve model according to the change rate of the temperature detected by the built-in temperature sensor.
In a specific embodiment, the power-down and power-up correction value needs to pre-record a change curve of the residual heat temperature of the device after power-down, as shown in fig. 1, within a preset time period after the device is powered up, according to a change rate of the temperature detected by the built-in temperature sensor, a corresponding change curve model is obtained by comparison, the residual heat temperature of the device during power-up is calculated, then the residual heat temperature is used as the power-down and power-up correction value, and at the moment, the problem that the detection result of the built-in temperature sensor is inaccurate when a heating device of the device affects the built-in temperature sensor can be avoided by correcting the temperature detected by the built-in temperature sensor and adding the power-down and power-up correction value.
Taking a temperature controller as an example, by recording the temperature measured in the process of powering on the temperature controller again after different power down times, a change curve model (as shown in fig. 1) of the temperature in the process of powering off and powering on is established by using experimental data, and by combining the change curve model, the temperature change rate of the temperature controller after powering on can be seen to be influenced by the residual heat after different power down times. The influence of the waste heat on the temperature change rate of the temperature controller after being electrified again can be utilized, the temperature change rate of the temperature controller after being electrified again can be calculated, the waste heat temperature of the temperature controller influenced by a heating component can be calculated by combining a curve model, a corresponding power-down and power-up correction value is formulated according to the size of the waste heat temperature, and the power-down and power-up correction value is slowly reduced until the power-down and power-up correction value is 0 after being electrified.
In a preferred embodiment, after the device is powered on, as shown in fig. 2, the influence of different ambient temperatures on the internal temperature sensor is corrected, that is, the temperature detected by the internal temperature sensor is added to the ambient temperature correction value generated by different ambient temperatures. And/or, as shown in fig. 3, the influence of the heat generation of the device on the internal temperature sensor is corrected by adding a heat generation correction value generated by the heat generation of the device to the temperature detected by the internal temperature sensor.
The corrected value of the ambient temperature is obtained by the following steps.
The device is placed at different environmental temperatures in advance, built-in temperature sensors are used for measuring, the measuring result is compared with the actual environmental temperature, the change rule of the difference value between the measuring result and the actual environmental temperature at different environmental temperatures is obtained, temperature intervals are divided according to the change rule, the corresponding environment temperature correction value of each temperature interval is obtained, and when the built-in temperature sensors detect, the corresponding environment temperature correction value is selected according to the temperature area to which the temperature detected by the built-in temperature sensors belongs.
| Temperature interval (T) Measuring ) | (-∞，T1] | (T1，T2] | (T2，T3] | (T3，T4] | (T4，∞) |
| Correction value (a) n ) | a 1 | a 2 | a 3 | a 4 | a 5 |
TABLE 1 temperature interval and corresponding ambient temperature correction value
The heat generation correction value is obtained by the following steps.
When the device of the pre-recording device is heated in different time periods after being electrified, the pre-recording device adopts the built-in temperature sensor to measure, the measurement result is compared with the actual environment temperature, the change rule of the difference value between the measurement result and the actual environment temperature in different time periods after being electrified is obtained, time intervals are divided according to the change rule, the heating correction value corresponding to each time interval is obtained, and when the built-in temperature sensor detects, the corresponding heating correction value is selected according to the time interval to which the current time length after being electrified belongs.
| Time interval (t) | (0，t1] | (t1，t2] | (t2，t3] | (t3，t4] | (t4，∞) |
| Correction value (c) n ) | c 1 | c 2 | c 3 | c 4 | c 5 |
TABLE 2 Power-on time intervals and corresponding heating correction values
As shown in fig. 4, the operation of the present invention will be described in detail with a temperature controller (simply referred to as "thermostat").
Temperature sensor built-in temperature sensor of temperature controller detects ambient temperature T Measuring Then according to the ambient temperature T Measuring Selecting corresponding ring temperature correction value a in the temperature interval n And judging whether the power-on of the temperature controller is less than or equal to a preset time length, if so, indicating that the temperature controller is just powered on, and if not, calculating the change rate of the measured temperature firstly after the power-on, combining a change curve model according to the calculated change rate, calculating the residual heat temperature when the equipment is powered on again after the power-off, wherein the residual heat temperature is a value to be corrected, taking an approximate value according to the measured precision to be a correction value b, then reducing the value by one unit at a certain time interval by taking the precision as a minimum unit until the correction value b is 0, namely calculating the change rate of the temperature detected by a built-in temperature sensor of the temperature controller when the temperature controller is just powered on, and comparing the change curve model to obtain the power-off and power-on correction value b of the temperature controller. Then, according to the power-on time (i.e. power-on duration), the corresponding heating correction value c is obtained n . The temperature after the final correction of the built-in temperature sensor is T = T Measuring +a n +b+c n 。
The influence of different environmental temperatures, power failure, power on and power on time on the measuring result of the temperature controller is comprehensively considered, a curve model is established by utilizing experimental data, a rule is found, and a corresponding correction value is formulated, so that the influence of heating components on the measuring environmental temperature is solved, especially the influence of waste heat on the correction value when the non-timing module device is powered off and powered on is improved, the accuracy of the temperature controller on the measuring environmental temperature is improved, the temperature control effect is further improved, and the comfort level is improved.
Based on the technical scheme, the invention also protects a device with a built-in temperature sensor, and the device comprises a controller, wherein the controller corrects the temperature detected by the built-in temperature sensor of the device by adopting the temperature correction method of the built-in temperature sensor of the device. The device is not limited to the temperature controller recited in the present invention, and may include other devices in which a temperature sensor is built and which may be affected by heat generated by other internal devices, such as an air conditioner. In addition, the device can also be part of other equipment, for example, the invention also protects an air conditioner which adopts the device.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A method for correcting temperature of a temperature sensor built in a device, comprising:
a change curve model of the detection temperature of a built-in temperature sensor in the process of powering down and then powering up of the device is established in advance;
when the power-on time of the device is less than or equal to the preset time, obtaining a power-down power-on correction value according to the change rate of the temperature detected by the built-in temperature sensor and by combining a change curve model;
and correcting the temperature detected by the built-in temperature sensor by adding the power-down and power-up correction value.
2. The method for correcting the temperature of a temperature sensor incorporated in a device according to claim 1, wherein the change curve model is obtained by: and respectively establishing different change curve models by recording the temperature measured by the built-in temperature sensor in the process of powering on the device again after different power-down time.
3. The temperature correction method for a device-embedded temperature sensor according to claim 2, wherein the power-down and power-up correction value is obtained by:
pre-recording a change curve of the waste heat temperature of the device after power failure;
when the device is electrified within a preset time length, comparing the change rates of the temperatures detected by the built-in temperature sensors to obtain a corresponding change curve model, and calculating the waste heat temperature of the device when the device is electrified;
and taking the waste heat temperature as a power-off and power-on correction value.
4. The method for correcting the temperature of the temperature sensor incorporated in the device according to any one of claims 1 to 3, further comprising: and after the device is powered on, adding a ring temperature correction value generated by adding different environmental temperatures to the temperature detected by the built-in temperature sensor, and/or adding a heating correction value generated by heating of a device of the device to the temperature detected by the built-in temperature sensor.
5. The method for correcting the temperature of the temperature sensor incorporated in the device according to claim 4, wherein the correction value of the ambient temperature is obtained by:
the device is placed at different environmental temperatures in advance, and a built-in temperature sensor is adopted for measurement;
comparing the measurement result with the actual ambient temperature;
obtaining the change rule of the difference value between the measurement result and the actual ambient temperature under different ambient temperatures;
dividing temperature intervals according to the change rule, and obtaining the environment temperature correction value corresponding to each temperature interval;
and when the temperature sensor detects the temperature, selecting a corresponding environment temperature correction value according to the temperature area to which the temperature detected by the built-in temperature sensor belongs.
6. The method for correcting the temperature of the temperature sensor incorporated in the device according to claim 4, wherein the heat generation correction value is obtained by:
pre-recording that the device is heated in different time periods after the device is powered on, and measuring by adopting the built-in temperature sensor;
comparing the measurement result with the actual ambient temperature;
obtaining the change rule of the difference value between the measurement result and the actual environment temperature in different time periods after electrification;
dividing time intervals according to the change rule, and obtaining the heating correction value corresponding to each time interval;
and selecting a corresponding heating correction value according to a time interval to which the current time length after electrification belongs when the built-in temperature sensor detects.
7. An apparatus having a built-in temperature sensor, comprising a controller, wherein the controller corrects a temperature detected by the built-in temperature sensor of the apparatus by using the temperature correction method of the built-in temperature sensor of the apparatus according to any one of claims 1 to 6.
8. The device with built-in temperature sensor of claim 7, wherein the device comprises a thermostat.
9. An air conditioner characterized by using the device as claimed in claim 7 or 8.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101126536A (en) * | 2007-09-17 | 2008-02-20 | 深圳市和而泰电子科技有限公司 | Dynamic air conditioning temperature control method |
| CN103868610A (en) * | 2012-12-17 | 2014-06-18 | 深圳合众思壮科技有限公司 | Temperature correction method, device and equipment |
| CN110134161A (en) * | 2019-05-22 | 2019-08-16 | 河南工业职业技术学院 | The heat dissipation temperature control system of automation equipment control cabinet |
| CN110554718A (en) * | 2019-09-16 | 2019-12-10 | 珠海格力电器股份有限公司 | Temperature compensation method and device, storage medium and temperature controller |
| CN110594999A (en) * | 2019-09-17 | 2019-12-20 | 西蒙电气（中国）有限公司 | Method for realizing temperature compensation function of air conditioner temperature controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4731850B2 (en) * | 2004-07-22 | 2011-07-27 | 株式会社鷺宮製作所 | air conditioner |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101126536A (en) * | 2007-09-17 | 2008-02-20 | 深圳市和而泰电子科技有限公司 | Dynamic air conditioning temperature control method |
| CN103868610A (en) * | 2012-12-17 | 2014-06-18 | 深圳合众思壮科技有限公司 | Temperature correction method, device and equipment |
| CN110134161A (en) * | 2019-05-22 | 2019-08-16 | 河南工业职业技术学院 | The heat dissipation temperature control system of automation equipment control cabinet |
| CN110554718A (en) * | 2019-09-16 | 2019-12-10 | 珠海格力电器股份有限公司 | Temperature compensation method and device, storage medium and temperature controller |
| CN110594999A (en) * | 2019-09-17 | 2019-12-20 | 西蒙电气（中国）有限公司 | Method for realizing temperature compensation function of air conditioner temperature controller |
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