Engine electronic water pump control device based on LIN bus communication
Through the engine electronic water pump control device based on LIN bus communication, the problem that the ECU cannot control the electronic water pump during the engine test is solved, and the efficient, accurate and controllable operation of the electronic water pump is realized, avoiding complicated control methods and saving resources.
Patent Information
- Application Number
- CN202421071599.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-16
AI Technical Summary
During engine tests, the electronic water pump cannot be controlled by the data in the ECU or its internal hardware module, resulting in the water flow rate that cannot meet the test requirements. The existing solutions are complicated and cumbersome, and resources are wasted.
The engine electronic water pump control device based on LIN bus communication is adopted, including the electronic water pump connector female end wiring harness connector, switching power supply, regulated power supply, interface card, pull-up resistor and computer. It communicates with the electronic water pump through the interface card and sends and receives LIN signals. , to achieve independent control of the engine electronic water pump.
It achieves efficient, accurate and controllable operation of the engine's electronic water pump, temporarily freeing it from the constraints of the ECU and wiring harness, avoiding complicated control methods and saving resources.
Smart Images
Figure CN222376587U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of engine testing, and in particular relates to an engine electronic water pump control device based on LIN bus communication. Background Art
[0002] At present, the engine electronic water pump usually needs ECU and wiring harness for control. When the data in the ECU or its internal hardware module cannot meet the control conditions during the test, it will directly cause the engine water flow to fail to meet the test requirements. The existing method is to add another set of ECU and wiring harness to the engine to control the electronic water pump to work separately. This method is cumbersome and wastes resources. In order to ensure that the engine electronic water pump can start safely and independently and work normally during the bench test, an engine electronic water pump control device based on LIN bus communication is required. Utility Model Content
[0003] The utility model aims to solve the problem that an electronic water pump cannot be controlled due to data in an ECU or its internal hardware module in an engine test, and further provides an engine electronic water pump control device based on LIN bus communication.
[0004] The technical solution adopted by the utility model is:
[0005] The engine electronic water pump control device based on LIN bus communication is characterized by: comprising an electronic water pump connector female end wiring harness connector, a switching power supply, a voltage-stabilized power supply, an interface card, a pull-up resistor and a computer; inserting the electronic water pump connector female end wiring harness connector into the electronic water pump connector socket, connecting the pin 1 of the electronic water pump connector female end wiring harness connector in series with the pull-up resistor and the transformer 12V power supply interface and then connecting to the LIN0 channel of the interface card, connecting the pin 3 of the electronic water pump connector female end wiring harness connector to the engine cylinder body, and connecting the pin 4 of the electronic water pump connector female end wiring harness connector to the voltage-stabilized power supply to supply power to the electronic water pump separately;
[0006] Connect the COM2 port of the switching power supply in series to the GND channel of the interface card and the engine block, and connect the +12V port of the switching power supply to the VBAT channel of the interface card;
[0007] The computer communicates with the electronic water pump through the interface card, sends and receives LIN signals, and realizes the control of the engine electronic water pump.
[0008] Compared with the prior art, the utility model has the following beneficial effects:
[0009] The utility model solves the problem that the electronic water pump cannot be controlled due to the data in the ECU or its internal hardware module during the engine test. The utility model can control the electronic water pump of the engine, temporarily freeing it from the constraints of the ECU and the wiring harness, thereby achieving efficient, accurate and controllable operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the structure of the utility model;
[0011] Among them: 1. Electronic water pump; 2. Electronic water pump connector female end wiring harness connector; 3. Voltage stabilizer; 4. Pull-up resistor; 5. Interface card; 6. Host computer; 7. Switching power supply. DETAILED DESCRIPTION
[0012] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.
[0013] like Figure 1 As shown, the utility model provides an engine electronic water pump control device based on LIN bus communication, including an electronic water pump connector female end wiring harness connector 2, a voltage-stabilized power supply 3, a switching power supply 7, an interface card 5, a pull-up resistor 4 and a host computer 6; the electronic water pump connector female end wiring harness connector 2 is inserted into the connector of the electronic water pump 1, the pin 1 of the electronic water pump connector female end wiring harness connector 2 is connected in series with the pull-up resistor 4 and the transformer 12V power supply interface and then connected to the LIN0 channel of the interface card 5, the pin 3 of the electronic water pump connector female end wiring harness connector 2 is connected to the engine cylinder body, and the pin 4 of the electronic water pump connector female end wiring harness connector 2 is connected to the voltage-stabilized power supply 3 to supply power to the electronic water pump 1 separately;
[0014] Connect the COM2 port of the switching power supply 7 in series to the GND channel of the interface card 5 and the engine cylinder block, and connect the +12V interface of the switching power supply 7 to the VBAT channel of the interface card 5;
[0015] The host computer 6 communicates with the electronic water pump 1 through the interface card 5 and sends and receives LIN signals to control the electronic water pump 1 of the engine.
[0016] Among them: the switching power supply 7 adopts a 220V to 12V switching power supply.
[0017] Interface card 5 uses a CANFD interface card, model number is USBCANFD-200U.
[0018] The pull-up resistor 4 uses a 1KΩ pull-up resistor.
[0019] The host computer 6 is equipped with ZXDoc software.
[0020] The host computer 6 and the interface card 5 (USBCANFD-200U) are connected via a USB cable.
[0021] The female end wiring harness connector 1 of the electronic water pump connector cooperates with the wire to power the electronic water pump 1. The ZXDoc software communicates with the electronic water pump 1 through USBCANFD-200U, sends and receives LIN signals, and realizes the control of the engine electronic water pump 1.
[0022] Working method:
[0023] 1. External connections
[0024] (1) When the electronic water pump 1 is powered off, unplug the original wiring harness plug of the engine electronic water pump 1 and insert the female connector of the external connector into the socket of the electronic water pump 1. Connect the pin 1 of the connector in series with the 1KΩ pull-up resistor 4 and the 12V power supply interface of the transformer and then connect it to the LIN0 channel of the CANFD. Do not connect pin 2, connect pin 3 to the engine cylinder block, and connect pin 4 to the separate 12V power supply of the electronic water pump 1.
[0025] (2) Connect the COM2 port of the switching power supply to the GND channel of CANFD and to the engine block at the same time, and connect the 12V power supply to the VBAT channel of CANFD.
[0026] 2. Software communication.
[0027] (1) Set up the LIN channel in the ZXDoc software and establish the LIN1 and LIN2 channels.
[0028] (2) Add a database to the LIN1 bus.
[0029] (3) Create a new Lin1 message sending channel, retrieve messages from the database, and select ControlLin and StatusLin.
[0030] (4) Start execution and set the physical value of Control_setspeed to change the speed of the electronic water pump 1, thereby achieving controllable operation of the electronic water pump 1.
[0031] The utility model controls the engine electronic water pump 1 through ZXDoc software, CANFD and other equipment, so that the engine electronic water pump 1 is temporarily freed from the constraints of the ECU and the wiring harness, thereby achieving efficient, accurate and controllable operation.
[0032] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.
Claims
1. An engine electronic water pump control device based on LIN bus communication, characterized in that: The electronic water pump connector comprises a female end wiring harness connector (2), a voltage-stabilized power supply (3), a switching power supply (7), an interface card (5), a pull-up resistor (4) and a host computer (6); the female end wiring harness connector (2) of the electronic water pump connector is inserted into the socket of the electronic water pump (1); pin 1 of the female end wiring harness connector (2) of the electronic water pump connector is connected in series with the pull-up resistor (4) and the 12V power supply interface of the transformer and then connected to the LIN0 channel of the interface card (5); pin 3 of the female end wiring harness connector (2) of the electronic water pump connector is connected to the engine cylinder body; pin 4 of the female end wiring harness connector (2) of the electronic water pump connector is connected to the voltage-stabilized power supply (3) to supply power to the electronic water pump (1) separately; The COM2 port of the switching power supply (7) is connected in series to the GND channel of the interface card (5) and the engine cylinder body, and the +12V interface of the switching power supply (7) is connected to the VBAT channel of the interface card (5); The upper computer (6) communicates with the electronic water pump (1) via the interface card (5), and receives and sends LIN signals to realize control of the engine electronic water pump (1).
2. The engine electronic water pump control device based on LIN bus communication according to claim 1, characterized in that: The switching power supply (7) adopts a 220V to 12V switching power supply.
3. The engine electronic water pump control device based on LIN bus communication according to claim 1, characterized in that: The interface card (5) adopts a CANFD interface card.
4. The engine electronic water pump control device based on LIN bus communication according to claim 1, characterized in that: The pull-up resistor (4) is a 1KΩ pull-up resistor.
5. The engine electronic water pump control device based on LIN bus communication according to claim 1, characterized in that: The host computer (6) and the interface card (5) are connected via a USB connection line.