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Method and device for realizing parameter self-calibration
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A self-calibration and parameter technology, applied in static memory, comprehensive factory control, read-only memory, etc., can solve problems such as resource waste, program runaway, and affecting other event processing efficiency, so as to save resources, improve processing efficiency and safety sexual effect
Active Publication Date: 2012-08-22
CHERY AUTOMOBILE CO LTD
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[0005] Each ECU independently manages and maintains its own flash flash driver, which needs to occupy the logical processing resources of each ECU, resulting in waste of resources and affecting the processing efficiency of other events in the ECU. In addition, the flash flash driver is stored in In its own ECU, if there is a slight accident, such as the program running away, other programs may be flashed by mistake
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Embodiment 1
[0043] see figure 1 , this embodiment provides a method for realizing parameter self-calibration, including:
[0044] 101: Receive the current relevant parameter value sent by the functional ECU;
[0045] Among them, ECU, also known as vehicle computer, is a microcomputer controller suitable for automobiles and the like.
[0046] Wherein, the method can be realized by a calibration ECU. A calibration ECU can manage one or more functional ECUs, see for example figure 2 , a calibration ECU manages five functional ECUs including ECU_1, ECU_2, ECU_3, ECU_4, and ECU_5 through the CAN (Controller Area Network) bus.
[0047] 102: Perform optimal type matching on the current related parameter values to obtain the optimal type;
[0048] Specifically, perform optimal type matching on the current relevant parameter values; judge whether there is a matching type, if yes, use the matching type as the optimal type, and if not, use the closest type as the optimal type.
[0049] 103:...
Embodiment 2
[0071] see Figure 4 , this embodiment provides a device for realizing parameter self-calibration, including:
[0072] The receiving module 301 is used to receive the current relevant parameter value sent by the functional electronic control unit ECU;
[0073] The matching module 302 is used to perform optimal type matching on the current relevant parameter value received by the receiving module 301 to obtain the optimal type;
[0074] Sending module 303, is used for flashing memory flash brush write driver program is sent to functional ECU;
[0075] Judging module 304, for judging whether the application program suspension of functional ECU is safe, if safe, the relevant parameter value corresponding to the optimum type that matching module 302 obtains is sent to functional ECU, makes the flash brushing that functional ECU calls sending module 303 send The driver modifies the value of the relevant parameter to the value of the relevant parameter corresponding to the optimal...
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Abstract
The invention discloses a method and a device for realizing parameter self-calibration and belongs to the field of electronic control on automobiles. The method comprises the following steps: receiving a current relevant parameter value transmitted by a functional electronic control unit (ECU); carrying out optimal type matching on the current relevant parameter value to obtain the optimal type; transmitting a flash-memory flash driver to the functional ECU; and judging whether the application program suspension of the functional ECU is safe, and if so, transmitting the relevant parameter value corresponding to the optimal type to the functional ECU so that the functional ECU calls the flash driver to modify the relevant parameter value into the relevant parameter value corresponding to the optimal type. The device comprises a receiving module, a matching module, a transmitting module and a judging module. The invention realizes unified management on the calibration value of the relevant parameter of each functional ECU as well as the flash driver, thereby saving the resources and enhancing the treatment efficiency and the safety of each functional ECU.
Description
technical field [0001] The invention relates to the field of automotive electronic control, in particular to a method and device for realizing parameter self-calibration. Background technique [0002] Before the car is put into production, it generally needs to go through basic bench calibration, vehicle calibration, fault diagnosis calibration, three-high calibration test, emission test and vehicle test. After the car leaves the factory, under the influence of factors such as different use environments and different driving habits, the wear and tear of each component is also different. Therefore, it is necessary to realize self-calibration of various parameters through self-learning in real time according to vehicle conditions and environmental conditions. [0003] There are various functions of ECU (Electronic Control Unit, electronic control unit) in the car, for example, TPMS (Tire PressureMonitoring System, tire pressuremonitoring system) ECU, need to calculate the t...
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