CN107143983B - Wiring detection method and device of air temperature and humidity sensor for air conditioner - Google Patents
Wiring detection method and device of air temperature and humidity sensor for air conditioner Download PDFInfo
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- CN107143983B CN107143983B CN201710427754.9A CN201710427754A CN107143983B CN 107143983 B CN107143983 B CN 107143983B CN 201710427754 A CN201710427754 A CN 201710427754A CN 107143983 B CN107143983 B CN 107143983B
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Abstract
The embodiment of the invention provides a wiring detection method and device of an air temperature and humidity sensor for an air conditioner, and belongs to the technical field of air conditioners. The air temperature and humidity sensor comprises a return air temperature and humidity sensor and an air supply temperature and humidity sensor, and the method comprises the following steps: receiving a return air measurement value S of the return air temperature and humidity sensor when the air conditioner is not startedhAnd the air supply measured value S of the air supply temperature and humidity sensors(ii) a Comparing the return air measurement ShAnd the measured value S of the blowing airs(ii) a At the return air measured value ShAnd the measured value S of the blowing airsAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition. The technical scheme provided by the invention can detect whether the wiring of the return air temperature and humidity sensor and the air supply temperature and humidity sensor in the air conditioner is wrong, and is beneficial to improving the accuracy of the air conditioner in controlling the air humidity.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a wiring detection method and a wiring detection device of an air temperature and humidity sensor for an air conditioner.
Background
The heat exchanger in the air conditioner is provided with a return air pipe and an air supply pipe, and external air enters the heat exchanger from the return air pipe, exchanges heat in the heat exchanger and then is discharged from the air supply pipe. Taking a refrigerator in a household air conditioner as an example, indoor high-temperature air enters the refrigerator through a return air pipe, is subjected to heat dissipation and refrigeration in the refrigerator and then is changed into low-temperature air, and then is discharged indoors through an air supply pipe, so that the effect of reducing the indoor temperature is achieved.
For some places with higher requirements on air quality, an air conditioner is also needed to control the humidity of air; in order to meet the requirements of the air conditioning equipment in the precision machine room, a sensor for detecting the air humidity is arranged in the air conditioning equipment, and the dehumidification capacity of the air conditioning equipment is controlled by detecting the air humidity; in order to control the air humidity, a return air temperature and humidity sensor is generally installed at a return air pipe, and an air supply temperature and humidity sensor is installed at an air supply pipe. The inventor of the present application found in research that, since the two sensors are the same, a wiring error often occurs in the production of the air conditioner, so that the air conditioning equipment cannot accurately control the air humidity in the actual use.
Disclosure of Invention
The embodiment of the invention aims to provide a technical scheme capable of improving the accuracy of the air humidity control of an air conditioner.
In order to achieve the above object, a first aspect of an embodiment of the present invention provides a method for detecting a connection of an air temperature and humidity sensor for an air conditioner, where the air temperature and humidity sensor includes a return air temperature and humidity sensor and a supply air temperature and humidity sensor, and the method includes:
receiving a return air measurement value S of the return air temperature and humidity sensor when the air conditioner is not startedhAnd the air supply measured value S of the air supply temperature and humidity sensors；
Comparing the return air measurement ShAnd the measured value S of the blowing airs；
At the return air measured value ShAnd the measured value S of the blowing airsAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition.
Preferably, the wiring error setting condition includes:
at the return air measured value ShAnd/or the supply air measured value SsIs null, or said return air measure ShAnd the measured value S of the blowing airsWhen the absolute value of the difference is larger than or equal to a set value F, a wiring error alarm signal is output.
Preferably, the method further comprises:
at the return air measured value ShAnd the measured value S of the blowing airsWhen the absolute value of the difference value is less than a set value F, starting the air conditioner to run for a set time T;
comparing the return air measured value S of the return air temperature and humidity sensor after the air conditioner is started and operates for a set time ThtAnd the air supply measured value S of the air supply temperature and humidity sensorst；
At the return air measured value ShtAnd the measured value S of the blowing airstAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition.
Preferably, the starting the air conditioner on-operation set time T includes: and starting the air conditioner to start up in a refrigeration mode and run for a set time T.
Preferably, the wiring error setting condition includes:
at the return air measured value ShtAnd the measured value S of the blowing airstWhen the difference is less than or equal to a set value D, a wiring error alarm signal is output.
Preferably, the method further comprises:
at the return air measured value ShtAnd the measured value S of the blowing airstWhen the difference is larger than a set value D, the wiring detection is stopped.
Preferably, said return air measurement ShIncluding return air temperature measurement ThAnd/or return air humidity measurement Hh(ii) a The measured value S of the blowing airsIncluding supply air temperature measurements TsAnd/or supply air humidity measurement Hs(ii) a The return air measurement value ShtIncluding return air temperature measurement ThtAnd/or return air humidity measurement Hht(ii) a The measured value S of the blowing airstIncluding supply air temperature measurements TstAnd/or supply air humidity measurement Hst(ii) a The set value F comprises a temperature set value FtAnd/or the humidity setpoint value Fh(ii) a The set value D comprises a temperature set value DtAnd/or humidity set point Dh。
Preferably, the value range of the set time T is 5min-10 min; the temperature set value FtThe value range of (A) is 0 to +1 ℃, and the humidity set value FhThe value range of (A) is 0-1%; the temperature set value DtThe value range of (A) is 5-15 ℃, and the humidity set value D ishThe value range of (A) is 20-60%.
A second aspect of an embodiment of the present invention provides a wiring detection device for an air temperature and humidity sensor for an air conditioner, where the air temperature and humidity sensor includes a return air temperature and humidity sensor and an air supply temperature and humidity sensor, and the wiring detection device includes:
a receiving module for receiving the return air measured value S of the return air temperature and humidity sensor when the air conditioner is not startedhAnd the air supply measured value S of the air supply temperature and humidity sensors；
A comparison module for comparing the return air measured value ShAnd the measured value S of the blowing airs；
An output module for outputting the measured value S of the return airhAnd the measured value S of the blowing airsAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition.
Preferably, the output module is used for measuring the return air measured value ShAnd/or the supply air measured value SsIs null, or said return air measure ShAnd the measured value S of the blowing airsWhen the absolute value of the difference is larger than or equal to a set value F, a wiring error alarm signal is output.
Preferably, the apparatus further comprises:
a starting module for measuring the return air value ShAnd the measured value S of the blowing airsWhen the absolute value of the difference value is less than a set value F, starting the air conditioner to run for a set time T;
the comparison module compares the return air measured value S of the return air temperature and humidity sensor after the air conditioner is started and operates for a set time ThtAnd the air supply measured value S of the air supply temperature and humidity sensorst；
The output module is used for measuring the return air measured value ShtAnd the measured value S of the blowing airstAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition.
Preferably, the starting the air conditioner on-operation set time T includes: and starting the air conditioner to start up in a refrigeration mode and run for a set time T.
Preferably, the output module is used for measuring the return air measured value ShtAnd the measured value S of the blowing airstWhen the difference is less than or equal to a set value D, a wiring error alarm signal is output.
Preferably, the apparatus further comprises:
a stopping module for stopping the return air measured value ShtAnd the measured value S of the blowing airstWhen the difference is larger than a set value D, the wiring detection is stopped.
Preferably, said return air measurement ShIncluding return air temperature measurement ThAnd/or return air humidity measurement Hh(ii) a The measured value S of the blowing airsIncluding supply air temperature measurements TsAnd/or supply air humidity measurement Hs(ii) a The return air measurement value ShtIncluding return air temperature measurement ThtAnd/or return air humidity measurement Hht(ii) a The measured value S of the blowing airstIncluding supply air temperature measurements TstAnd/or supply air humidity measurement Hst(ii) a The set value F comprises a temperature set value FtAnd/or the humidity setpoint value Fh(ii) a The set value D comprises a temperature set value DtAnd/or humidity set point Dh。
Preferably, the value range of the set time T is 5min-10 min; the temperature set value FtThe value range of (A) is 0 to +1 ℃, and the humidity set value FhThe value range of (A) is 0-1%; the temperature set value DtThe value range of (A) is 5-15 ℃, and the humidity set value D ishThe value range of (A) is 20-60%.
A third aspect of the embodiments of the present invention provides a machine-readable storage medium having stored thereon instructions for causing a machine to execute the wire detection method for an air temperature and humidity sensor for an air conditioner according to the first aspect of the embodiments of the present invention.
The technical scheme provided by the invention has the following beneficial effects:
the invention provides a wiring detection method and a device of an air temperature and humidity sensor for an air conditioner, which receive and compare a return air measured value S of the return air temperature and humidity sensor when the air conditioner is not startedhAnd the measured value S of the temperature and humidity sensorsThe wiring of the return air temperature and humidity sensor and the air supply temperature and humidity sensor is detected, and whether wiring errors occur in the two temperature and humidity sensors can be known by comparing the measured values of the two temperature and humidity sensors, so that the accuracy of the air conditioner for controlling the air humidity is improved.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
fig. 1 is a flowchart of a wiring detection method of an air temperature and humidity sensor for an air conditioner according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
Referring to fig. 1, in a first aspect, an embodiment of the present invention provides a method for detecting a connection of an air temperature and humidity sensor for an air conditioner, where the air temperature and humidity sensor includes a return air temperature and humidity sensor and a supply air temperature and humidity sensor. The air conditioner comprises a return air temperature and humidity sensor, a cooling air temperature and humidity sensor and a cooling air temperature and humidity sensor, wherein the return air temperature and humidity sensor is used for detecting the temperature and humidity of air in a return air pipe of a heat exchanger (the heat exchanger is taken as a refrigerator for example for explanation) in the air conditioner; and the outlet wiring errors of the return air temperature and humidity sensor and the air supply temperature and humidity sensor are avoided, so that the accuracy of the air conditioner for controlling the air humidity is improved. The method provided by the embodiment of the invention comprises the following steps:
receiving a return air measurement value S of the return air temperature and humidity sensor when the air conditioner is not startedhAnd the air supply measured value S of the air supply temperature and humidity sensors；
Comparing the return air measurement ShAnd the measured value S of the blowing airs；
At the return air measured value ShAnd the measured value S of the blowing airsAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition.
It should be noted that, in order to provide the working power supply for the return air temperature and humidity sensor and the supply air temperature and humidity sensor, the return air measurement value S is receivedhAnd measured value S of air supplysPreviously, the power of the air conditioner was required to be turned on, but the air conditioner was not operated.
In addition, when the air conditioner is not started, the temperature and the humidity of the air in the return air pipe of the refrigerator are correspondingly equal to those of the air in the air supply pipe and are the same as those of the air in the external environment. Under the condition that the wiring errors do not occur in the return air temperature and humidity sensor and the air supply temperature and humidity sensor, the measured values of the return air temperature and humidity sensor and the air supply temperature and humidity sensor are approximately equal correspondingly. Otherwise, it is more likely that wiring errors occur in the return air temperature and humidity sensor and/or the supply air temperature and humidity sensor. At the moment, a wiring error alarm signal is output, and an operator is reminded of detecting the wiring of the return air temperature and humidity sensor and the air supply temperature and humidity sensor.
The wiring detection method of the air temperature and humidity sensor for the air conditioner provided by the embodiment of the invention receives and compares the return air measured value S of the return air temperature and humidity sensor when the air conditioner is not startedhAnd supply airAir supply measured value S of temperature and humidity sensorsThe wiring of the return air temperature and humidity sensor and the air supply temperature and humidity sensor is detected, and whether wiring errors occur in the two temperature and humidity sensors can be known by comparing the measured values of the two temperature and humidity sensors, so that the air conditioner can more accurately control the air humidity.
When the return air temperature and humidity sensor and/or the supply air temperature and humidity sensor are/is in wiring error, the return air measured value S of the return air temperature and humidity sensor is receivedhAnd the measured value S of the temperature and humidity sensorsToo large a deviation between, i.e. the return air measurement ShAnd the measured value S of the blowing airsWhen the absolute value of the difference value of (a) is greater than or equal to a set value F; or the measured values of the return air temperature and humidity sensor and the supply air temperature and humidity sensor are not received at all, namely the received return air measured value ShAnd/or the supply air measured value SsIs null; when any one of the two conditions appears, the condition that wiring errors possibly occur in the return air temperature and humidity sensor and/or the air supply temperature and humidity sensor can be explained, and at the moment, a wiring error alarm signal is output to remind an operator to detect the wiring of the return air temperature and humidity sensor and the air supply temperature and humidity sensor.
Although the above-mentioned comparison is made by comparing the return air measurement value S when the air conditioner is not in operationhAnd measured value S of air supplysWhether wiring errors occur in the return air temperature and humidity sensor and the air supply temperature and humidity sensor can be detected to a certain extent. However, even if the return air measurement S is receivedhAnd measured value S of air supplysAre approximately equal, i.e. the return air measurement ShAnd measured value S of air supplysThe absolute value of the difference value is smaller than the set value F, and the possibility that the two temperature and humidity sensors are not connected in error cannot be completely eliminated. For example, when the return air temperature and humidity sensor and the supply air temperature and humidity sensor are connected reversely, the measured values of the two temperature and humidity sensors can still be received, and the two measured values are basically consistent. Therefore, in order to make the wiring detection result more accurate and reliable, the method provided by the embodiment of the invention further comprises the following steps:
upon receipt of a return air measurement ShAnd measured value S of air supplysWhen the absolute value of the difference value is less than a set value F, starting the air conditioner to start running for a set time T;
comparing the return air measured value S of the return air temperature and humidity sensor after the air conditioner is started and operates for a set time ThtAnd the air supply measured value S of the air supply temperature and humidity sensorst；
At the return air measured value ShtAnd the measured value S of the blowing airstAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition.
Specifically, after the air conditioner is started and operates for a set time T, air enters from a return air pipe of the refrigerator, is discharged from an air supply pipe after heat is released in the refrigerator, water vapor in the air is condensed after the heat is released, and the humidity of the air is reduced. Therefore, after being refrigerated by the refrigerator, the temperature and the humidity of the air in the air supply pipe are reduced compared with those of the air in the return air pipe, so that the return air measured value S of the return air temperature and humidity sensor is obtained under the condition of correct wiringhtThe measured value S of the air supply which is higher than the temperature and humidity sensor of the air supply is measuredst. By comparing return air measurements ShtAnd measured value S of air supplystWhether wiring errors occur in the return air temperature and humidity sensor and the air supply temperature and humidity sensor can be known.
When the air conditioner is in different operation modes, the return air temperature and humidity sensor measures the return air value ShtAnd the measured value S of the temperature and humidity sensorstAnd also different. For example, when the air conditioner is in heating mode, the return air temperature and humidity sensor measures the return air temperature and humidityhtThe measured value S of the air supply which is correspondingly lower than the temperature and humidity sensor of the air supplyst. And when the air conditioner runs in a refrigeration mode, the return air measured value S of the return air temperature and humidity sensorhtThe measured value S of the air supply which is higher than the temperature and humidity sensor of the air supply is measuredst。
Preferably, in the embodiment of the present invention, the starting the air conditioner on-state operation set time T includes: and starting the air conditioner to start up in a refrigeration mode and run for a set time T.
Air conditionerAfter the air conditioner is started up in a refrigeration mode and runs for a set time T, the return air measured value S of the return air temperature and humidity sensor is measuredhtAnd the measured value S of the temperature and humidity sensorstHas already tended to be stable, is convenient for data comparison, and has returned air measured value ShtSteadily above the supply air measurement Sst。
When the air conditioner runs in a cooling mode, the wiring error setting condition comprises the following steps: at the return air measured value ShtAnd the measured value S of the blowing airstIs a difference S ofht-SstAnd when the wiring error is smaller than or equal to the set value D, outputting a wiring error alarm signal and stopping the air conditioner so as to facilitate the wiring inspection of an operator.
Further, at said return air measurement ShtAnd the measured value S of the blowing airstWhen the difference value is larger than a set value D, the wiring of the return air temperature and humidity sensor and the wiring of the air supply temperature and humidity sensor are correct, and at the moment, the wiring detection is stopped.
As described above, the return air temperature and humidity sensor and the supply air temperature and humidity sensor can measure both the air temperature value and the air humidity value. Therefore, in the wire detection, either one of the temperature value and the humidity value may be used as the reference value, or more preferably, both the temperature value and the humidity value may be used as the reference value. I.e. the return air measurement ShIncluding return air temperature measurement ThAnd/or return air humidity measurement Hh(ii) a The measured value S of the blowing airsIncluding supply air temperature measurements TsAnd/or supply air humidity measurement Hs(ii) a The return air measurement value ShtIncluding return air temperature measurement ThtAnd/or return air humidity measurement Hht(ii) a The measured value S of the blowing airstIncluding supply air temperature measurements TstAnd/or supply air humidity measurement Hst(ii) a Correspondingly, the set value F comprises a temperature set value FtAnd/or the humidity setpoint value Fh(ii) a The set value D comprises a temperature set value DtAnd/or humidity set point Dh。
When the data comparison is carried out when the air conditioner is not started, the return air is returnedMeasured value of temperature ThAnd a supply air temperature measurement TsIs compared with a temperature set value FtMaking comparison at the measured value T of return air temperaturehAnd a supply air temperature measurement TsIs greater than or equal to the temperature set point FtAnd outputting a wiring error alarm signal. Alternatively, the return air humidity measurement HhAnd a supply air humidity measurement HsIs compared with a humidity set value FhMaking comparison on the measured value H of return air humidityhAnd a supply air humidity measurement HsIs greater than or equal to the humidity set point FhAnd outputting a wiring error alarm signal. Or, to be measured value T of return air temperaturehAnd a supply air temperature measurement TsIs compared with a temperature set value FtComparing, and measuring the return air humidityhAnd a supply air humidity measurement HsIs compared with a humidity set value FhAnd comparing, namely outputting a wiring error alarm signal when the data deviation of any one of the two comparisons is overlarge.
When data comparison is carried out after the set time T of the starting operation of the air conditioner, the measured value T of the return air temperature is comparedhtAnd a supply air temperature measurement TstIs compared with a set temperature value DtMaking comparison at the measured value T of return air temperaturehtAnd a supply air temperature measurement TstIs less than or equal to the temperature set value DtAnd outputting a wiring error alarm signal. Alternatively, the return air humidity measurement HhtAnd a supply air humidity measurement HstIs compared with a humidity set value DhMaking comparison on the measured value H of return air humidityhtAnd a supply air humidity measurement HstIs less than or equal to the humidity set value DhAnd outputting a wiring error alarm signal. Or, to be measured value T of return air temperaturehtAnd a supply air temperature measurement TstIs compared with a set temperature value DtComparing, and measuring the return air humidityhtAnd a supply air humidity measurement HstAbsolute value of the difference and humidityConstant value DhAnd comparing, namely outputting a wiring error alarm signal when the comparison result of either one of the two comparisons meets the condition of outputting the wiring error alarm signal.
In order to acquire stable data and facilitate data comparison, it is preferable to acquire the air temperature and humidity in the return air duct of the refrigerator and the air temperature and humidity in the air supply duct after the air conditioner operates stably, and generally, after the air conditioner operates for 5min to 10min, the air temperatures and humidities in the return air duct and the air supply duct of the refrigerator are relatively stable, so the set time T is preferably 5min to 10 min.
Comprehensively considering the measurement error of the temperature and humidity sensor, and setting the temperature value FtThe value range of (A) is 0 to +1 ℃, and the humidity set value FhThe value range of (A) is 0-1%.
Temperature set point DtAnd a humidity set point DhThe value of the air conditioner is related to the specific operation condition of the air conditioner, in the embodiment of the invention, when the air conditioner is controlled to operate in a refrigeration mode, the temperature of the air in the air supply pipe is 5-15 ℃ lower than that of the air in the return air pipe, and correspondingly, the humidity of the air in the air supply pipe is 20-60% lower than that of the air in the return air pipe, wherein the humidity is relative humidity. Thus, the temperature set point DtThe value range of (A) is about 5-15 ℃, and the humidity set value D ishThe value range of (A) is about 20-60%. The specific value is set according to the running condition of the air conditioner.
A second aspect of the embodiments of the present invention provides a wiring detection device for an air temperature and humidity sensor for an air conditioner, where the air temperature and humidity sensor includes a return air temperature and humidity sensor and an air supply temperature and humidity sensor, where the return air temperature and humidity sensor is used to detect the temperature and humidity of air in a return air pipe of a heat exchanger (hereinafter, the heat exchanger is taken as an example for explanation) in the air conditioner, and the air supply temperature and humidity sensor is used to detect the temperature and humidity of air in an air supply pipe of a refrigerator in the air conditioner; in order to avoid the wrong wiring of the outgoing lines of the return air temperature and humidity sensor and the air supply temperature and humidity sensor, the device provided by the embodiment of the invention comprises the following components:
receiving dieA block for receiving the return air measured value S of the return air temperature and humidity sensor when the air conditioner is not startedhAnd the air supply measured value S of the air supply temperature and humidity sensors；
A comparison module for comparing the return air measured value ShAnd the measured value S of the blowing airs；
An output module for outputting the measured value S of the return airhAnd the measured value S of the blowing airsAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition.
It should be noted that, in order to provide the working power supply for the return air temperature and humidity sensor and the supply air temperature and humidity sensor, the return air measurement value S is receivedhAnd measured value S of air supplysPreviously, the power of the air conditioner was required to be turned on, but the air conditioner was not operated.
In addition, when the air conditioner is not started, the temperature and the humidity of the air in the return air pipe of the refrigerator are correspondingly equal to those of the air in the air supply pipe and are the same as those of the air in the external environment. Under the condition that the wiring errors do not occur in the return air temperature and humidity sensor and the air supply temperature and humidity sensor, the measured values of the return air temperature and humidity sensor and the air supply temperature and humidity sensor are approximately equal correspondingly. Otherwise, it is more likely that wiring errors occur in the return air temperature and humidity sensor and/or the supply air temperature and humidity sensor. At the moment, the output module outputs a wiring error alarm signal to remind an operator to detect the wiring of the return air temperature and humidity sensor and the air supply temperature and humidity sensor.
The wiring detection device of the air temperature and humidity sensor for the air conditioner provided by the invention receives and compares the return air measured value S of the return air temperature and humidity sensor when the air conditioner is not startedhAnd the measured value S of the temperature and humidity sensorsThe wiring of the return air temperature and humidity sensor and the wiring of the air supply temperature and humidity sensor are detected, and whether wiring errors occur in the two temperature and humidity sensors can be known by comparing the measured values of the two temperature and humidity sensors, so that the accuracy of the air conditioner for controlling the humidity is improved.
Wrong wiring occurs in return air temperature and humidity sensor and/or air supply temperature and humidity sensorMistiming, the comparison is typically a return air measurement S received from a return air temperature and humidity sensorhAnd the measured value S of the temperature and humidity sensorsToo large a deviation between, i.e. the return air measurement ShAnd the measured value S of the blowing airsWhen the absolute value of the difference value of (a) is greater than or equal to a set value F; or the measured values of the return air temperature and humidity sensor and the supply air temperature and humidity sensor are not received at all, namely the received return air measured value ShAnd/or the supply air measured value SsIs null; when any one of the two conditions appears, the condition that wiring errors possibly occur in the return air temperature and humidity sensor and/or the air supply temperature and humidity sensor can be explained, and at the moment, the output module outputs a wiring error alarm signal to remind an operator to detect the wiring of the return air temperature and humidity sensor and the air supply temperature and humidity sensor.
Although the above-mentioned comparison is made by comparing the return air measurement value S when the air conditioner is not in operationhAnd measured value S of air supplysWhether wiring errors occur in the return air temperature and humidity sensor and the air supply temperature and humidity sensor can be detected to a certain extent. However, even if the return air measurement S is receivedhAnd measured value S of air supplysAre approximately equal, i.e. the return air measurement ShAnd measured value S of air supplysThe absolute value of the difference value is smaller than the set value F, and the possibility that the two temperature and humidity sensors are not connected in error cannot be completely eliminated. For example, when the return air temperature and humidity sensor and the supply air temperature and humidity sensor are connected reversely, the measured values of the two temperature and humidity sensors can still be received, and the two measured values are basically consistent. Therefore, in order to make the wiring detection result more accurate and reliable, the apparatus provided in the embodiment of the present invention further includes:
a starting module for measuring the return air value ShAnd the measured value S of the blowing airsWhen the absolute value of the difference value is less than a set value F, starting the air conditioner to run for a set time T;
the comparison module compares the return air measured value S of the return air temperature and humidity sensor after the air conditioner is started and operates for a set time ThtAnd the air supply temperature and humidity sensor measures the air supplyValue Sst；
The output module is used for measuring the return air measured value ShtAnd the measured value S of the blowing airstAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition.
Specifically, after the air conditioner is started and operates for a set time T, air enters from a return air pipe of the refrigerator, is discharged from an air supply pipe after heat is released in the refrigerator, water vapor in the air is condensed after the heat is released, and the humidity of the air is reduced. Therefore, after being refrigerated by the refrigerator, the temperature and the humidity of the air in the air supply pipe are reduced compared with those of the air in the return air pipe, so that the return air measured value S of the return air temperature and humidity sensor is obtained under the condition of correct wiringhtThe measured value S of the air supply which is higher than the temperature and humidity sensor of the air supply is measuredst. By comparing return air measurements ShtAnd measured value S of air supplystWhether wiring errors occur in the return air temperature and humidity sensor and the air supply temperature and humidity sensor can be known.
When the air conditioner is in different operation modes, the return air temperature and humidity sensor measures the return air value ShtAnd the measured value S of the temperature and humidity sensorstAnd also different. For example, when the air conditioner is in heating mode, the return air temperature and humidity sensor measures the return air temperature and humidityhtThe measured value S of the air supply which is correspondingly lower than the temperature and humidity sensor of the air supplyst. And when the air conditioner runs in a refrigeration mode, the return air measured value S of the return air temperature and humidity sensorhtThe measured value S of the air supply which is higher than the temperature and humidity sensor of the air supply is measuredst。
Preferably, in the embodiment of the present invention, the starting the air conditioner on-state operation set time T includes: and starting the air conditioner to start up in a refrigeration mode and run for a set time T.
After the air conditioner is started up in a refrigeration mode and runs for a set time T, the return air measured value S of the return air temperature and humidity sensor of the air conditionerhtAnd the measured value S of the temperature and humidity sensorstHas already tended to be stable, is convenient for data comparison, and has returned air measured value ShtSteadily above the supply air measurement Sst。
In air conditionerWhen the device runs in a refrigeration mode, the output module outputs the measured value S of the return airhtAnd the measured value S of the blowing airstIs a difference S ofht-SstAnd when the wiring error is smaller than or equal to the set value D, outputting a wiring error alarm signal and stopping the air conditioner so as to facilitate the wiring inspection of an operator.
Further, the wiring detection device provided by the embodiment of the invention is also provided with a stopping module, and the return air measured value S is measuredhtAnd the measured value S of the blowing airstWhen the difference value is larger than a set value D, the wiring of the return air temperature and humidity sensor and the wiring of the air supply temperature and humidity sensor are correct, and at the moment, the module stops wiring detection.
As described above, the return air temperature and humidity sensor and the supply air temperature and humidity sensor can measure both the air temperature value and the air humidity value. Therefore, in the wire detection, either one of the temperature value and the humidity value may be used as the reference value, or more preferably, both the temperature value and the humidity value may be used as the reference value. I.e. the return air measurement ShIncluding return air temperature measurement ThAnd/or return air humidity measurement Hh(ii) a The measured value S of the blowing airsIncluding supply air temperature measurements TsAnd/or supply air humidity measurement Hs(ii) a The return air measurement value ShtIncluding return air temperature measurement ThtAnd/or return air humidity measurement Hht(ii) a The measured value S of the blowing airstIncluding supply air temperature measurements TstAnd/or supply air humidity measurement Hst(ii) a Correspondingly, the set value F comprises a temperature set value FtAnd/or the humidity setpoint value Fh(ii) a The set value D comprises a temperature set value DtAnd/or humidity set point Dh。
When data comparison is carried out when the air conditioner is not started, the measured value T of the return air temperature is comparedhAnd a supply air temperature measurement TsIs compared with a temperature set value FtMaking comparison at the measured value T of return air temperaturehAnd a supply air temperature measurement TsIs greater than or equal to the temperature set point FtWhen the temperature of the water is higher than the set temperature,and outputting a wiring error alarm signal. Alternatively, the return air humidity measurement HhAnd a supply air humidity measurement HsIs compared with a humidity set value FhMaking comparison on the measured value H of return air humidityhAnd a supply air humidity measurement HsIs greater than or equal to the humidity set point FhAnd outputting a wiring error alarm signal. Or, to be measured value T of return air temperaturehAnd a supply air temperature measurement TsIs compared with a temperature set value FtComparing, and measuring the return air humidityhAnd a supply air humidity measurement HsIs compared with a humidity set value FhAnd comparing, namely outputting a wiring error alarm signal when the data deviation of any one of the two comparisons is overlarge.
When data comparison is carried out after the set time T of the starting operation of the air conditioner, the measured value T of the return air temperature is comparedhtAnd a supply air temperature measurement TstIs compared with a set temperature value DtMaking comparison at the measured value T of return air temperaturehtAnd a supply air temperature measurement TstIs less than or equal to the temperature set value DtAnd outputting a wiring error alarm signal. Alternatively, the return air humidity measurement HhtAnd a supply air humidity measurement HstIs compared with a humidity set value DhMaking comparison on the measured value H of return air humidityhtAnd a supply air humidity measurement HstIs less than or equal to the humidity set value DhAnd outputting a wiring error alarm signal. Or, to be measured value T of return air temperaturehtAnd a supply air temperature measurement TstIs compared with a set temperature value DtComparing, and measuring the return air humidityhtAnd a supply air humidity measurement HstIs compared with a humidity set value DhAnd comparing, namely outputting a wiring error alarm signal when the comparison result of either one of the two comparisons meets the condition of outputting the wiring error alarm signal.
In order to acquire stable data and facilitate data comparison, it is preferable to acquire the air temperature and humidity in the return air duct of the refrigerator and the air temperature and humidity in the air supply duct after the air conditioner operates stably, and generally, after the air conditioner operates for 5min to 10min, the air temperatures and humidities in the return air duct and the air supply duct of the refrigerator are relatively stable, so the set time T is preferably 5min to 10 min.
Comprehensively considering the measurement error of the temperature and humidity sensor, and setting the temperature value FtThe value range of (A) is 0 to +1 ℃, and the humidity set value FhThe value range of (A) is 0-1%.
Temperature set point DtAnd a humidity set point DhThe value of the air conditioner is related to the specific operation condition of the air conditioner, in the embodiment of the invention, when the air conditioner is controlled to operate in a refrigeration mode, the temperature of the air in the air supply pipe is 5-15 ℃ lower than that of the air in the return air pipe, and correspondingly, the humidity of the air in the air supply pipe is 20-60% lower than that of the air in the return air pipe, wherein the humidity is relative humidity. Thus, the temperature set point DtThe value range of (A) is about 5-15 ℃, and the humidity set value D ishThe value range of (A) is about 20-60%. The specific value is set according to the running condition of the air conditioner.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art can understand that all or part of the steps in the method for implementing the above embodiments may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a (may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (15)
1. A wiring detection method of an air temperature and humidity sensor for an air conditioner is disclosed, wherein the air temperature and humidity sensor comprises a return air temperature and humidity sensor and an air supply temperature and humidity sensor, and the method comprises the following steps:
receiving a return air measurement value S of the return air temperature and humidity sensor when the air conditioner is not startedhAnd the air supply measured value S of the air supply temperature and humidity sensors；
Comparing the return air measurement ShAnd the measured value S of the blowing airs；
At the return air measured value ShAnd/or the supply air measured value SsIs null, or said return air measure ShAnd the measured value S of the blowing airsWhen the absolute value of the difference is larger than or equal to a set value F, an alarm signal for indicating that the return air temperature and humidity sensor and/or the air supply temperature and humidity sensor has a wiring error is output.
2. The method for detecting the connection of the air temperature/humidity sensor for the air conditioner according to claim 1, further comprising:
at the return air measured value ShAnd the measured value S of the blowing airsWhen the absolute value of the difference value is less than a set value F, starting the air conditioner to run for a set time T;
comparing the return air temperature after the set time T of the starting operation of the air conditionerReturn air measurement S of a humidity sensorhtAnd the air supply measured value S of the air supply temperature and humidity sensorst；
At the return air measured value ShtAnd the measured value S of the blowing airstAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition.
3. The method for detecting the connection of the air temperature and humidity sensor for the air conditioner according to claim 2, wherein the starting the air conditioner for the set time T comprises: and starting the air conditioner to start up in a refrigeration mode and run for a set time T.
4. The method for detecting the connection of the air temperature/humidity sensor for the air conditioner according to claim 3, wherein the connection error setting condition includes:
at the return air measured value ShtAnd the measured value S of the blowing airstWhen the difference is less than or equal to a set value D, a wiring error alarm signal is output.
5. The method for detecting the connection of the air temperature/humidity sensor for the air conditioner according to claim 4, further comprising:
at the return air measured value ShtAnd the measured value S of the blowing airstWhen the difference is larger than a set value D, the wiring detection is stopped.
6. The method for detecting the temperature/humidity sensor of air conditioner according to claim 4 or 5, wherein the return air measurement value S is measuredhIncluding return air temperature measurement ThAnd/or return air humidity measurement Hh(ii) a The measured value S of the blowing airsIncluding supply air temperature measurements TsAnd/or supply air humidity measurement Hs(ii) a The return air measurement value ShtIncluding return air temperature measurement ThtAnd/or return air humidity measurement Hht(ii) a The measured value S of the blowing airstIncluding supply air temperature measurements TstAnd/or supply air humidity measurement Hst(ii) a The set value F comprises a temperature set value FtAnd/or the humidity setpoint value Fh(ii) a The set value D comprises a temperature set value DtAnd/or humidity set point Dh。
7. The wiring detection method of the air temperature and humidity sensor for the air conditioner according to claim 6, wherein the set time T is in a range of 5min to 10 min; the temperature set value FtThe value range of (A) is 0 to +1 ℃, and the humidity set value FhThe value range of (A) is 0-1%; the temperature set value DtThe value range of (A) is 5-15 ℃, and the humidity set value D ishThe value range of (A) is 20-60%.
8. The utility model provides an air temperature and humidity sensor's for air conditioner detection device that works a telephone switchboard, air temperature and humidity sensor includes return air temperature and humidity sensor and air supply temperature and humidity sensor, its characterized in that, wiring detection device includes:
a receiving module for receiving the return air measured value S of the return air temperature and humidity sensor when the air conditioner is not startedhAnd the air supply measured value S of the air supply temperature and humidity sensors；
A comparison module for comparing the return air measured value ShAnd the measured value S of the blowing airs；
An output module for outputting the measured value S of the return airhAnd/or the supply air measured value SsIs null, or said return air measure ShAnd the measured value S of the blowing airsWhen the absolute value of the difference is larger than or equal to a set value F, an alarm signal for indicating that the return air temperature and humidity sensor and/or the air supply temperature and humidity sensor has a wiring error is output.
9. The apparatus for detecting a temperature and humidity sensor connected to an air conditioner according to claim 8, further comprising:
a start module that measures the return airShAnd the measured value S of the blowing airsWhen the absolute value of the difference value is less than a set value F, starting the air conditioner to run for a set time T;
the comparison module compares the return air measured value S of the return air temperature and humidity sensor after the air conditioner is started and operates for a set time ThtAnd the air supply measured value S of the air supply temperature and humidity sensorst；
The output module is used for measuring the return air measured value ShtAnd the measured value S of the blowing airstAnd outputting a wiring error alarm signal when the comparison result meets the wiring error setting condition.
10. The apparatus of claim 9, wherein the starting of the set time T for the air conditioner comprises: and starting the air conditioner to start up in a refrigeration mode and run for a set time T.
11. The apparatus of claim 10, wherein the output module outputs the return air measurement value ShtAnd the measured value S of the blowing airstWhen the difference is less than or equal to a set value D, a wiring error alarm signal is output.
12. The apparatus for detecting a temperature and humidity sensor connected to an air conditioner according to claim 11, further comprising:
a stopping module for stopping the return air measured value ShtAnd the measured value S of the blowing airstWhen the difference is larger than a set value D, the wiring detection is stopped.
13. The apparatus for detecting the temperature and humidity of an air conditioner according to claim 11 or 12, wherein the return air measurement value S is a value obtained by measuring the temperature and humidity of the airhIncluding return air temperature measurement ThAnd/or return air humidity measurement Hh(ii) a The measured value S of the blowing airsIncluding supply air temperature measurementsTsAnd/or supply air humidity measurement Hs(ii) a The return air measurement value ShtIncluding return air temperature measurement ThtAnd/or return air humidity measurement Hht(ii) a The measured value S of the blowing airstIncluding supply air temperature measurements TstAnd/or supply air humidity measurement Hst(ii) a The set value F comprises a temperature set value FtAnd/or the humidity setpoint value Fh(ii) a The set value D comprises a temperature set value DtAnd/or humidity set point Dh。
14. The wiring detection device of the air temperature and humidity sensor for the air conditioner according to claim 13, wherein the set time T is in a range of 5min to 10 min; the temperature set value FtThe value range of (A) is 0 to +1 ℃, and the humidity set value FhThe value range of (A) is 0-1%; the temperature set value DtThe value range of (A) is 5-15 ℃, and the humidity set value D ishThe value range of (A) is 20-60%.
15. A machine-readable storage medium having stored thereon instructions for causing a machine to execute the method for detecting a wiring of an air temperature and humidity sensor for an air conditioner according to any one of claims 1 to 7.
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| CN107525218B (en) * | 2017-07-27 | 2019-10-18 | 奥克斯空调股份有限公司 | A kind of self-adaptation control method and system of A/C pressure switch wiring |
| CN107631407B (en) * | 2017-09-11 | 2019-11-22 | 广东美的暖通设备有限公司 | The wiring faults detection method and device of air conditioner, air conditioner |
| CN110500710B (en) * | 2019-07-30 | 2021-07-20 | 广东申菱环境系统股份有限公司 | Air conditioner fault self-diagnosis method |
| CN115218343A (en) * | 2022-06-21 | 2022-10-21 | 宁波奥克斯电气股份有限公司 | Fixed-frequency air conditioner wiring self-checking method and device and fixed-frequency air conditioner |
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