CN105522886A - Self-recognition method for configuration of vehicle air conditioner - Google Patents
Self-recognition method for configuration of vehicle air conditioner Download PDFInfo
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- CN105522886A CN105522886A CN201410578733.3A CN201410578733A CN105522886A CN 105522886 A CN105522886 A CN 105522886A CN 201410578733 A CN201410578733 A CN 201410578733A CN 105522886 A CN105522886 A CN 105522886A
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Abstract
The invention discloses a self-recognition method for configuration of a vehicle air conditioner, which comprises the following steps that: when a key is powered on, an engine is not started and an air conditioner switch is pushed, an ECU (Electronic Control Unit) detects the voltage magnitude of an air conditioner temperature sensor; if the voltage magnitude is less than or equal to the threshold, the ECU judges that an air conditioner is installed on the vehicle; and otherwise, the ECU judges that the air conditioner is not installed on the vehicle. By adopting the method disclosed by the invention, only one ECU needs to be developed, managed and stored, and the ECU can be simultaneously used for the vehicle on which the air conditioner is installed or not installed so as to reduce the variety of the ECU, thereby reducing the development workload of the ECU, improving the management and storage efficiency of the ECU and also avoiding the assembly error of the ECU.
Description
Technical field
The application relates to a kind of ECU and automatically identifies whether vehicle configures the method for air-conditioning.
Background technology
At present, be satisfied different customer demand, the air-conditioning of a lot of vehicle is and selects assembling to put.For same vehicle, different air-conditioning configurations correspond to different ECU (electronic control unit).Specifically, install air-conditioned vehicle, its ECU is comparatively complicated, includes some control module relating to air-conditioning and diagnostic modules etc.The vehicle do not installed an air-conditioner, its ECU is comparatively simple, has simplified the control module that relates to air-conditioning and diagnostic module etc.
This way according to the different ECU of air-conditioning configuration installation provides cost savings, but but brings some other problemses.Such as, add the kind of ECU, have X money vehicle just to have 2X money ECU.Which not only adds the developmental work amount of ECU, and the management of ECU and storage efficiency reduce, and more may there is the loading error risk of ECU.
Summary of the invention
Technical problems to be solved in this application are to provide a kind of ECU and automatically identify whether vehicle configures the method for air-conditioning, make each vehicle only have a ECU, and this ECU can simultaneously for this vehicle vehicle being provided with air-conditioning Yu do not install an air-conditioner.
For solving the problems of the technologies described above, the self-identifying method of the application's air conditioning for automobiles configuration is: when after key powers on and driving engine unstart and air conditioning switch are pressed time, ECU detects the magnitude of voltage of air conditioner temperature sensor; If this magnitude of voltage is less than or equal to threshold value, then ECU judges that vehicle is provided with air-conditioning; Otherwise ECU judges that vehicle does not install an air-conditioner.
The application makes each vehicle only need to develop, manages, stores a kind of ECU, this ECU can simultaneously for this vehicle vehicle being provided with air-conditioning Yu do not install an air-conditioner, because this reducing the kind of ECU, thus reduce the developmental work amount of ECU, improve management and the storage efficiency of ECU, the loading error of ECU can also be avoided.
Accompanying drawing explanation
Fig. 1 to Fig. 3 is the diagram of circuit of three embodiments of the self-identifying method of the application's air conditioning for automobiles configuration respectively.
Detailed description of the invention
No matter whether the self-identifying method of the application's air conditioning for automobiles configuration is provided with air-conditioning to same vehicle all adopt same ECU, this ECU has two states: the first state refers to the not air-conditioned control of tool and diagnosis function, for the vehicle do not installed an air-conditioner; Second state refers to the air-conditioned control of tool and diagnosis function, for installing air-conditioned vehicle.
When ECU is configured to the first state, then close airconditioning control function, close air conditioner temperature sensor diagnosis function, close air-conditioning compressor relay diagnosis function, close condenser fan relay diagnosis function.
When ECU is configured to the second state, then open airconditioning control function, open air conditioner temperature sensor diagnosis function, open air-conditioning compressor relay diagnosis function, open condensation cooling fan relay diagnosis function.
Apparently, the first state also can be contrary with the implication of the second state.
Refer to Fig. 1, the embodiment one of self-identifying method of the application's air conditioning for automobiles configuration is: when after key powers on and fire an engine unstart and air conditioning switch are pressed time, ECU detects the magnitude of voltage of air conditioner temperature sensor.If vehicle does not install an air-conditioner, so naturally do not have air conditioner temperature sensor, can be understood as air conditioner temperature sensor open circuit, what therefore the magnitude of voltage of ECU detection air conditioner temperature sensor obtained is a very large numerical value.If vehicle is provided with air-conditioning, naturally just have air conditioner temperature sensor, what therefore the magnitude of voltage of ECU detection air conditioner temperature sensor obtained is the some values in rational range of voltage values.By arranging a threshold value, can distinguish and whether there is air conditioner temperature sensor, also just whether difference is provided with air-conditioning.
If the magnitude of voltage of air conditioner temperature sensor is less than or equal to this threshold value, then ECU judges that vehicle is provided with air-conditioning.
If the magnitude of voltage of air conditioner temperature sensor is greater than this threshold value, then ECU judges that vehicle does not install an air-conditioner.
Described method can be operated by factory or distributor before vehicle is sold.
Refer to Fig. 2, the embodiment two of the self-identifying method of the application's air conditioning for automobiles configuration comprises the steps:
1st step, ECU is all configured to the first state acquiescently, or ECU is all configured to the second state acquiescently.Production and the debugging flow process of ECU can be simplified like this.This ECU is installed in corresponding vehicle, no matter and whether vehicle is provided with air-conditioning.
2nd step, when after key powers on and fire an engine unstart and air conditioning switch are pressed time, ECU detects the magnitude of voltage of air conditioner temperature sensor.If this magnitude of voltage is less than or equal to this threshold value, then ECU judges that vehicle is provided with air-conditioning.Otherwise ECU judges that vehicle does not install an air-conditioner.ECU maintains according to recognition result or changes the state of default configuration.
Refer to Fig. 3, the embodiment three of the self-identifying method of the application's air conditioning for automobiles configuration comprises the steps:
1st step, after key powers on, ECU reads the recognition result for vehicle air conditioning configuring condition (namely whether being provided with air-conditioning) stored in the nonvolatile memory.
If find that there is recognition result, then whole end of program.
If do not find recognition result, then enter the 2nd step.
2nd step, when after key powers on and fire an engine unstart and air conditioning switch are pressed time, ECU detects the magnitude of voltage of air conditioner temperature sensor.If this magnitude of voltage is less than or equal to this threshold value, then ECU judges that vehicle is provided with air-conditioning.Otherwise ECU judges that vehicle does not install an air-conditioner.
3rd step, ECU records the recognition result to vehicle air conditioning configuring condition in some nonvolatile memories.Such as, ECU arranges an air-conditioning self-identifying state flag bit in some nonvolatile memories, is used for record ECU to the recognition result of vehicle air conditioning configuring condition.Unless adopted special diagnostic installation, otherwise this air-conditioning self-identifying state flag bit just can not be changed or wipe after write-once.Preferably, ECU after ignition key power down and before car load power down (i.e. AfterRun state) record the recognition result to vehicle air conditioning configuring condition in the nonvolatile memory.
Above embodiment two also can be combined with each other with embodiment three.
These are only the preferred embodiment of the application, and be not used in restriction the application.For a person skilled in the art, the application can have various modifications and variations.Within all spirit in the application and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in the application.
Claims (6)
1. a self-identifying method for air conditioning for automobiles configuration, is characterized in that, when after key powers on and driving engine unstart and air conditioning switch are pressed time, ECU detects the magnitude of voltage of air conditioner temperature sensor; If this magnitude of voltage is less than or equal to threshold value, then ECU judges that vehicle is provided with air-conditioning; Otherwise ECU judges that vehicle does not install an air-conditioner.
2. the self-identifying method of air conditioning for automobiles configuration according to claim 1, is characterized in that, comprise the steps:
1st step, ECU is all configured to the first state acquiescently, or is all configured to the second state;
2nd step, when after key powers on and fire an engine unstart and air conditioning switch are pressed time, ECU detects the magnitude of voltage of air conditioner temperature sensor.If this magnitude of voltage is less than or equal to this threshold value, then ECU judges that vehicle is provided with air-conditioning; Otherwise ECU judges that vehicle does not install an air-conditioner; ECU maintains according to recognition result or changes the state of default configuration.
3. the self-identifying method of air conditioning for automobiles configuration according to claim 2, it is characterized in that, the first state refers to the not air-conditioned control of tool and diagnosis function, for the vehicle do not installed an air-conditioner; Second state refers to the air-conditioned control of tool and diagnosis function, for installing air-conditioned vehicle; Or the first state is contrary with the implication of the second state.
4. the self-identifying method of air conditioning for automobiles configuration according to claim 1, is characterized in that, comprise the steps:
1st step, after key powers on, ECU reads the recognition result for vehicle air conditioning configuring condition stored in the nonvolatile memory; If find that there is recognition result, then whole end of program; Otherwise enter the 2nd step;
2nd step, when after key powers on and fire an engine unstart and air conditioning switch are pressed time, ECU detects the magnitude of voltage of air conditioner temperature sensor.If this magnitude of voltage is less than or equal to this threshold value, then ECU judges that vehicle is provided with air-conditioning; Otherwise ECU judges that vehicle does not install an air-conditioner;
3rd step, ECU records the recognition result to vehicle air conditioning configuring condition in the nonvolatile memory.
5. the self-identifying method of air conditioning for automobiles configuration according to claim 4, it is characterized in that, in described method the 3rd step, ECU arranges an air-conditioning self-identifying state flag bit in the nonvolatile memory, is used for record ECU to the recognition result of vehicle air conditioning configuring condition; Unless adopted special diagnostic installation, otherwise this air-conditioning self-identifying state flag bit just can not be changed or wipe after write-once.
6. the self-identifying method of air conditioning for automobiles configuration according to claim 5, it is characterized in that, in described method the 3rd step, ECU records the recognition result to vehicle air conditioning configuring condition in the nonvolatile memory after ignition key power down and before car load power down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578733.3A CN105522886A (en) | 2014-10-24 | 2014-10-24 | Self-recognition method for configuration of vehicle air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410578733.3A CN105522886A (en) | 2014-10-24 | 2014-10-24 | Self-recognition method for configuration of vehicle air conditioner |
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| CN105522886A true CN105522886A (en) | 2016-04-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708254A (en) * | 2018-12-14 | 2019-05-03 | 青岛海信日立空调系统有限公司 | A kind of air conditioner |
| CN110719854A (en) * | 2017-05-08 | 2020-01-21 | 韦巴斯托股份公司 | Method for debugging air conditioning system, computer-readable storage medium and air conditioning system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009090823A (en) * | 2007-10-09 | 2009-04-30 | Denso Corp | Air conditioner control device for vehicle with sensor identification function |
| CN202011368U (en) * | 2011-03-28 | 2011-10-19 | 重庆长安伟世通发动机控制系统有限公司 | Automatic state identification system for air conditioning system of vehicle |
| CN104070961A (en) * | 2014-07-04 | 2014-10-01 | 上汽通用五菱汽车股份有限公司 | Method for automatically identifying automobile air conditioner configuration |
-
2014
- 2014-10-24 CN CN201410578733.3A patent/CN105522886A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009090823A (en) * | 2007-10-09 | 2009-04-30 | Denso Corp | Air conditioner control device for vehicle with sensor identification function |
| CN202011368U (en) * | 2011-03-28 | 2011-10-19 | 重庆长安伟世通发动机控制系统有限公司 | Automatic state identification system for air conditioning system of vehicle |
| CN104070961A (en) * | 2014-07-04 | 2014-10-01 | 上汽通用五菱汽车股份有限公司 | Method for automatically identifying automobile air conditioner configuration |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719854A (en) * | 2017-05-08 | 2020-01-21 | 韦巴斯托股份公司 | Method for debugging air conditioning system, computer-readable storage medium and air conditioning system |
| CN110719854B (en) * | 2017-05-08 | 2024-03-08 | 韦巴斯托股份公司 | Method for debugging air conditioning system, computer readable storage medium, and air conditioning system |
| CN109708254A (en) * | 2018-12-14 | 2019-05-03 | 青岛海信日立空调系统有限公司 | A kind of air conditioner |
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Application publication date: 20160427 |