CN116890603B - Failure detection method and system for contactor of air conditioner blower - Google Patents
Failure detection method and system for contactor of air conditioner blower Download PDFInfo
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- CN116890603B CN116890603B CN202311160543.5A CN202311160543A CN116890603B CN 116890603 B CN116890603 B CN 116890603B CN 202311160543 A CN202311160543 A CN 202311160543A CN 116890603 B CN116890603 B CN 116890603B
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- contactor
- vital sign
- auxiliary contact
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- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00978—Control systems or circuits characterised by failure of detection or safety means; Diagnostic methods
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioner fault detection, and provides a fault detection method and a fault detection system for a contactor of an air conditioner blower, in order to avoid the situation that false alarm occurs due to the fact that an auxiliary contact of the contactor cannot accurately feed back the actual state of the contactor of the blower because of factors such as dust entering of the contact, and the like, wherein the method comprises the following steps: after the contactor receives a first preset time for controlling the contactor to be closed/opened, acquiring state information fed back by the auxiliary contact and vital sign signals of the blower in a second preset time, wherein the vital sign signals change once every third preset time when the blower is electrified and works, and the third preset time is smaller than the second preset time; judging whether the contactor and the auxiliary contact have faults or not according to the state information and the vital sign signals.
Description
Technical Field
The invention relates to the technical field of air conditioner fault detection, in particular to a fault detection method of a contactor of an air conditioner blower and a fault detection system of the contactor of the air conditioner blower.
Background
In the related art, a contactor is generally used on an air conditioning blower of a vehicle to be turned on and off, and an auxiliary contact is installed on the contactor to feed back an engaged or off state of the contactor.
However, in the practical application process, the auxiliary contact of the contactor can not accurately feed back the actual state of the contactor of the heater due to factors such as contact ash feeding, so that false alarm occurs, and the reliability of the system is greatly reduced.
Disclosure of Invention
The invention aims to solve the technical problems, and provides a fault detection method and a fault detection system for a contactor of an air conditioner blower, which can comprehensively judge whether the contactor and an auxiliary contact have faults according to vital sign signals of the blower and state information fed back by the auxiliary contact, and have higher accuracy, so that the situation of false alarm is avoided, and the reliability of the system is greatly improved.
The technical scheme adopted by the invention is as follows:
a fault detection method of a contactor of an air conditioner blower, the contactor being correspondingly provided with an auxiliary contact, the fault detection method comprising the steps of: after the contactor receives a control instruction of engaging/disengaging the contactor for a first preset time, acquiring state information fed back by the auxiliary contact and vital sign signals of the blower in a second preset time, wherein when the blower is electrified to work, the vital sign signals change once every third preset time, and the third preset time is smaller than the second preset time; judging whether the contactor and the auxiliary contact have faults or not according to the state information and the vital sign signals.
In one embodiment of the present invention, the control instruction is an instruction for engaging the contactor, and determining whether the contactor and the auxiliary contact fail according to the status information and the vital sign signal includes: judging whether the state information is that the contactor is in an off state or not; if the state information is that the contactor is in an off state, judging whether the vital sign signal changes or not; if the vital sign signal changes, judging that the auxiliary contact fails, and enabling the contactor to work normally; if the vital sign signal is unchanged, judging that the auxiliary contact works normally, and the contactor has abnormal suction faults.
In one embodiment of the present invention, the control instruction is an instruction to open the contactor, and determining whether the contactor and the auxiliary contact fail according to the state information and the vital sign signal includes: judging whether the state information is that the contactor is in a suction state or not; if the state information is that the contactor is in the suction state, judging whether the vital sign signal changes or not; if the vital sign signal changes, judging that the auxiliary contact works normally, and the contactor has an abnormal fault of disconnection; and if the vital sign signal is not changed, judging that the auxiliary contact fails, and enabling the contactor to work normally.
A fault detection system of a contactor of an air conditioner blower, the contactor being correspondingly provided with an auxiliary contact, the fault detection system comprising: the acquisition module is used for acquiring state information fed back by the auxiliary contact and vital sign signals of the blower in second preset time after the contactor receives a first preset time for sucking/breaking a control instruction of the contactor, wherein the vital sign signals change every third preset time when the blower is electrified and works, and the third preset time is smaller than the second preset time; and the judging module is used for judging whether the contactor and the auxiliary contact have faults or not according to the state information and the vital sign signals.
In one embodiment of the present invention, the control command is a command for engaging the contactor, and the judging module is specifically configured to: judging whether the state information is that the contactor is in an off state or not; if the state information is that the contactor is in an off state, judging whether the vital sign signal changes or not; if the vital sign signal changes, judging that the auxiliary contact fails, and enabling the contactor to work normally; if the vital sign signal is unchanged, judging that the auxiliary contact works normally, and the contactor has abnormal suction faults.
In one embodiment of the present invention, the control command is a command for opening the contactor, and the judging module is specifically configured to: judging whether the state information is that the contactor is in a suction state or not; if the state information is that the contactor is in the suction state, judging whether the vital sign signal changes or not; if the vital sign signal changes, judging that the auxiliary contact works normally, and the contactor has an abnormal fault of disconnection; and if the vital sign signal is not changed, judging that the auxiliary contact fails, and enabling the contactor to work normally.
A computer device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the fault detection method of the contactor of the air conditioner blower when executing the computer program.
A non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described failure detection method of a contactor of an air conditioning blower.
The invention has the beneficial effects that:
the invention can comprehensively judge whether the contactor and the auxiliary contact have faults according to the vital sign signals of the blower and the state information fed back by the auxiliary contact, has higher accuracy, avoids the situation of false alarm, and greatly improves the reliability of the system.
Drawings
Fig. 1 is a flowchart of a failure detection method of a contactor of an air conditioner blower according to an embodiment of the present invention;
fig. 2 is a block diagram of a failure detection system of a contactor of an air conditioner blower according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the fault detection method of the contactor of the air conditioner blower according to the embodiment of the present invention may include the following steps:
s1, after the contactor receives a control instruction of engaging/disengaging the contactor for a first preset time, acquiring state information fed back by the auxiliary contact and vital sign signals of the blower in a second preset time. When the blower is electrified to work, the vital sign signal changes once every third preset time, and the third preset time is smaller than the second preset time.
Specifically, an embedded control unit may be built in the blower to record a vital sign signal of the blower, which is a signal representing an operation state of the blower, through the embedded control unit. When the blower is powered on, the vital sign signal changes once every third preset time, for example, the vital sign signal is added by 1 every 1 s.
Specifically, after the contactor receives the control instruction of engaging/disengaging the contactor for a first preset time, for example, after 5 seconds, the contactor communicates (for example, RS485 communication) with the embedded control unit to obtain the vital sign signal of the blower within a second preset time (for example, within 30 seconds), and meanwhile, the state information fed back by the auxiliary contact may be obtained, where the state information may be that the contactor is in an off state/engaging state.
S2, judging whether the contactor and the auxiliary contact have faults or not according to the state information and the vital sign signals.
In one embodiment of the present invention, when the control command is a command to attract the contactor, determining whether the contactor and the auxiliary contact are faulty according to the state information and the vital sign signal may include: judging whether the state information is that the contactor is in the off state, and judging whether the vital sign signal is changed if the state information is that the contactor is in the off state. If the vital sign signal changes, judging that the auxiliary contact fails, and the contactor works normally; if the vital sign signal is unchanged, judging that the auxiliary contact works normally, and the contactor has abnormal suction faults.
It will be appreciated that if the status information is that the contactor is in the engaged state, it is determined that both the auxiliary contact and the contactor are operating normally.
In another embodiment of the present invention, when the control command is a command to open the contactor, determining whether the contactor and the auxiliary contact are malfunctioning according to the state information and the vital sign signal may include: judging whether the state information is that the contactor is in the suction state, and judging whether the vital sign signal is changed if the state information is that the contactor is in the suction state. If the vital sign signal changes, judging that the auxiliary contact works normally, and disconnecting the contactor with abnormal faults; if the vital sign signal is unchanged, judging that the auxiliary contact fails, and the contactor works normally.
It will be appreciated that if the status information is that the contactor is in the off state, then it is determined that both the auxiliary contacts and the contactor are operating normally.
In summary, according to the method for detecting a fault of a contactor of an air conditioner blower according to the embodiment of the invention, after the contactor receives a first preset time for engaging/disengaging a control command of the contactor, state information fed back by an auxiliary contact and a vital sign signal of the blower in a second preset time are obtained, and whether the contactor and the auxiliary contact have faults or not is determined according to the state information and the vital sign signal. Therefore, whether the contactor and the auxiliary contact fail or not can be comprehensively judged according to the vital sign signals of the blower and the state information fed back by the auxiliary contact, the accuracy is high, the situation of false alarm is avoided, and the reliability of the system is greatly improved.
In summary, according to the method for detecting a fault of a contactor of an air conditioner heater in the embodiment of the invention, after the contactor receives the first control instruction of the suction contactor for the first preset time, the first state information fed back by the auxiliary contact is obtained, if the first state information is that the contactor is in the off state, whether the return air temperature and the outlet air temperature of the air conditioner heater meet the first preset condition is judged, and if the first preset condition is met, the suction fault of the contactor is judged. Therefore, whether the contactor fails or not can be comprehensively judged according to the state information fed back by the auxiliary contact, the return air temperature and the air outlet temperature of the air conditioner heater, the accuracy is high, the situation of false alarm is avoided, and the reliability of the system is greatly improved.
The invention also provides a fault detection system of the contactor of the air conditioner blower corresponding to the fault detection method of the contactor of the air conditioner blower.
As shown in fig. 2, the failure detection system of the contactor of the air conditioner blower according to the embodiment of the present invention may include: an acquisition module 100 and a judgment module 200.
The acquiring module 100 is configured to acquire, after the contactor receives a first preset time for engaging/disengaging a control command of the contactor, state information fed back by an auxiliary contact in a second preset time and a vital sign signal of the blower, where the vital sign signal changes once every third preset time when the blower is powered on, and the third preset time is less than the second preset time; the judging module 200 is used for judging whether the contactor and the auxiliary contact have faults according to the state information and the vital sign signals.
In one embodiment of the present invention, the control command is a command for engaging the contactor, and the determining module 200 is specifically configured to: judging whether the state information is that the contactor is in an off state; if the state information is that the contactor is in the off state, judging whether the vital sign signal is changed or not; if the vital sign signal changes, judging that the auxiliary contact fails, and the contactor works normally; if the vital sign signal is unchanged, judging that the auxiliary contact works normally, and the contactor has abnormal suction faults.
In one embodiment of the present invention, the control command is a command for opening the contactor, and the determining module 200 is specifically configured to: judging whether the state information is that the contactor is in a suction state; if the state information is that the contactor is in the suction state, judging whether the vital sign signal is changed or not; if the vital sign signal changes, judging that the auxiliary contact works normally, and disconnecting the contactor to cause abnormal faults; if the vital sign signal is unchanged, judging that the auxiliary contact fails, and the contactor works normally.
It should be noted that, for avoiding redundancy, specific embodiments of the failure detection system for a contactor of an air conditioner fan according to the present invention may refer to the embodiments of the failure detection method for a contactor of an air conditioner fan described above, and will not be described in detail herein.
According to the fault detection system of the contactor of the air conditioner blower, after the contactor receives the control instruction of sucking/opening the contactor for the first preset time, the acquisition module acquires the state information fed back by the auxiliary contact and the vital sign signal of the blower in the second preset time, and the judgment module judges whether the contactor and the auxiliary contact have faults according to the state information and the vital sign signal. Therefore, whether the contactor and the auxiliary contact fail or not can be comprehensively judged according to the vital sign signals of the blower and the state information fed back by the auxiliary contact, the accuracy is high, the situation of false alarm is avoided, and the reliability of the system is greatly improved.
The invention also provides a computer device corresponding to the fault detection method of the contactor of the air conditioner blower.
The computer equipment comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the fault detection method of the contactor of the air conditioner blower is realized when the processor executes the computer program.
According to the computer equipment provided by the embodiment of the invention, whether the contactor and the auxiliary contact are in fault or not can be comprehensively judged according to the vital sign signals of the blower and the state information fed back by the auxiliary contact, the accuracy is higher, and the situation of false alarm is avoided, so that the reliability of the system is greatly improved.
The invention also provides a non-transitory computer readable storage medium corresponding to the fault detection method of the contactor of the air conditioner blower.
The non-transitory computer-readable storage medium of the embodiment of the present invention has stored thereon a computer program that, when executed by a processor, implements the above-described failure detection method of the contactor of the air conditioning blower.
According to the non-transitory computer readable storage medium provided by the embodiment of the invention, whether the contactor and the auxiliary contact have faults or not can be comprehensively judged according to the vital sign signals of the blower and the state information fed back by the auxiliary contact, the accuracy is higher, and the situation of false alarm is avoided, so that the reliability of the system is greatly improved.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (4)
1. A fault detection method for a contactor of an air conditioner blower, wherein the contactor is correspondingly provided with an auxiliary contact, the fault detection method comprising the following steps:
after the contactor receives a control instruction of engaging/disengaging the contactor for a first preset time, acquiring state information fed back by the auxiliary contact and vital sign signals of the blower in a second preset time, wherein when the blower is electrified to work, the vital sign signals change once every third preset time, and the third preset time is smaller than the second preset time;
judging whether the contactor and the auxiliary contact have faults or not according to the state information and the vital sign signals; the control instruction is an instruction for sucking the contactor, judges whether the contactor and the auxiliary contact have faults according to the state information and the vital sign signals, and comprises the following steps:
judging whether the state information is that the contactor is in an off state or not;
if the state information is that the contactor is in an off state, judging whether the vital sign signal changes or not;
if the vital sign signal changes, judging that the auxiliary contact fails, and enabling the contactor to work normally;
if the vital sign signal is unchanged, judging that the auxiliary contact works normally, and the contactor has abnormal suction fault; the control instruction is an instruction for opening the contactor, judges whether the contactor and the auxiliary contact have faults according to the state information and the vital sign signals, and comprises the following steps:
judging whether the state information is that the contactor is in a suction state or not;
if the state information is that the contactor is in the suction state, judging whether the vital sign signal changes or not;
if the vital sign signal changes, judging that the auxiliary contact works normally, and the contactor has an abnormal fault of disconnection;
and if the vital sign signal is not changed, judging that the auxiliary contact fails, and enabling the contactor to work normally.
2. A fault detection system of a contactor of an air conditioner blower, wherein the contactor is correspondingly provided with an auxiliary contact, the fault detection system comprising:
the acquisition module is used for acquiring state information fed back by the auxiliary contact and vital sign signals of the blower in second preset time after the contactor receives a first preset time for sucking/breaking a control instruction of the contactor, wherein the vital sign signals change every third preset time when the blower is electrified and works, and the third preset time is smaller than the second preset time;
the judging module is used for judging whether the contactor and the auxiliary contact have faults or not according to the state information and the vital sign signals; the control instruction is an instruction for sucking the contactor, and the judging module is specifically configured to:
judging whether the state information is that the contactor is in an off state or not;
if the state information is that the contactor is in an off state, judging whether the vital sign signal changes or not;
if the vital sign signal changes, judging that the auxiliary contact fails, and enabling the contactor to work normally;
if the vital sign signal is unchanged, judging that the auxiliary contact works normally, and the contactor has abnormal suction fault; the control instruction is an instruction for opening the contactor, and the judging module is specifically configured to:
judging whether the state information is that the contactor is in a suction state or not;
if the state information is that the contactor is in the suction state, judging whether the vital sign signal changes or not;
if the vital sign signal changes, judging that the auxiliary contact works normally, and the contactor has an abnormal fault of disconnection;
and if the vital sign signal is not changed, judging that the auxiliary contact fails, and enabling the contactor to work normally.
3. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor, when executing the computer program, implements the method for detecting a failure of a contactor of an air conditioning blower according to claim 1.
4. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that the program, when executed by a processor, implements the failure detection method of the contactor of the air conditioning blower according to claim 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311160543.5A CN116890603B (en) | 2023-09-11 | 2023-09-11 | Failure detection method and system for contactor of air conditioner blower |
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| CN202311160543.5A CN116890603B (en) | 2023-09-11 | 2023-09-11 | Failure detection method and system for contactor of air conditioner blower |
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| CN116890603A CN116890603A (en) | 2023-10-17 |
| CN116890603B true CN116890603B (en) | 2023-12-12 |
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