A method of master-slave ECU for multi-sensor collaborative management
A collaborative management and multi-sensor technology, applied in the direction of instruments, safety arrangements, control/regulation systems, etc., can solve problems that affect the reliable and accurate operation of the engine, sensor parameter value failure, etc., to achieve convenient implementation, novel logic, and simple control Effect
Active Publication Date: 2021-11-16
WEICHAI HEAVY MACHINERY CO LTD
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Problems solved by technology
If there is no reasonable coordinated control of the sensors, when one or more sensors fail, the sensor parameter values will be invalid, which will inevitably affect the reliable and accurate operation of the engine
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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only for simplifying description and explaining the present invention, and are not intended to limit the present invention.
[0033] Such as figure 1 As shown, sensor A is electrically connected to the master ECU, where sensor A includes water temperature sensor A, engine oil pressure temperature sensor A, rail pressure sensor A, etc.; sensor B is electrically connected to slave ECU, where sensor B includes water temperature sensor B, engine oil pressure temperature sensor A, etc. Sensor B, rail pressure sensor B, etc.; common sensors are electrically connected to both the master ECU and the slave ECU. Common sensors include camshaft position sensor and crankshaft position sens...
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The invention discloses a method for cooperative management of multiple sensors by a master-slave ECU. Deviation calibration, fault alarm beyond the range of deviation calibration. When both sensors A and B are abnormal, the detection value of the master and slave ECUs is the default value C, and a fault alarm is issued. When one of the sensors A and B is abnormal, the detection value of the master and slave ECUs is provided by the normal sensor, and a fault alarm is issued. Sensor B does not exist: when sensor A is normal, master-slave ECU data exchange, master-slave ECU detection value is detection value A, no fault; when sensor A is abnormal, master-slave ECU detection value is default value C, fault alarm. The present invention can realize master-slave ECU data interaction when a sensor fails, completes reasonable management and control of sensor parameters to ensure reliable and accurate operation of the engine.
Description
technical field [0001] The invention belongs to the technical field of engine control, and in particular relates to a method for cooperative management of multiple sensors by a master-slave ECU. Background technique [0002] The engine ECU is the control core of the engine management system. Its basic function is to collect sensor signals based on the engine speed and load. It is always in the best combustion state under real-time working conditions and external working conditions, and most engines usually use a single ECU to control it. [0003] With the promotion of high-horsepower engines, engines with more than 8 cylinders are more and more recognized by users. This kind of engine is mostly controlled by master / slave ECU. At present, most of the control strategies related to master / slave ECUs focus on "switching between master / slave ECUs; using master / slave ECUs for engine redundancy control". For example, in the Chinese invention patent CN106593671A, a method for red...
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IPC IPC(8): G05B9/03
Inventor 李同楠赵福芹陈有兵刘晓民丁万荞
Owner WEICHAI HEAVY MACHINERY CO LTD