Whole vehicle power-on signal control circuit adopting relay
By designing a vehicle power-on signal control circuit using relays, the problem of low testing efficiency caused by the high cost of Vector VH1160 tool is solved, and the low cost control and testing efficiency of the KL15 vehicle power-on signal are achieved.
Patent Information
- Application Number
- CN202421133969.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-23
AI Technical Summary
In the prior art, during the testing of automotive EPS electronic control unit, the high procurement cost of Vector VH1160 tool causes testers to queue up during peak use, making it difficult to improve the testing efficiency.
A vehicle power-on signal control circuit using relay is designed, and the circuit connection of the CANoe box IO port, relay, EPS to be tested and the power supply is connected, and the relay is turned on and off to achieve low-cost control of the KL15 vehicle power-on signal.
The low-cost control of the power-on signal of the KL15 vehicle is achieved through relays, which reduces the procurement cost of test equipment and improves the efficiency of automotive EPS electronic control unit testing.
Smart Images
Figure CN222452153U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ECU electronic control units, in particular to a vehicle power-on signal control circuit using a relay. Background Art
[0002] With the development of automobile electrification and intelligence, more and more electronic control units are used in automobiles. Software has become an important part of the internal system of automobiles. There are more and more automobile problems caused by software. Therefore, it is necessary to fully test each electronic control unit of the car.
[0003] At present, in the test of the electronic control unit of the automotive electric power steering system EPS, the Vector VH1160 cable adapter box tool is used to control the ECU electronic control unit KL15 vehicle power-on signal. In daily testing work, there are many scenarios where VectorVH1160 is used, such as the DTC aging test that requires multiple control of the KL15 vehicle power-on signal. The VectorVH1160 is used to control the KL15 vehicle power-on signal, which saves time and effort and avoids the occurrence of the wrong number of times; for example, the EPS angle loss test that requires fast power on and off and requires milliseconds, the Vector VH1160 is used to control the KL15 vehicle power-on signal, which can accurately control the power-on and power-off time of the KL15 vehicle power-on signal; for example, the conditions for triggering the recording of static current monitoring data also have high requirements for the power-on time of the KL15 vehicle power-on signal, and the Vector VH1160 is also needed.
[0004] Since Vector VH1160 has many test scenarios and high procurement costs, during peak usage, there are 4-5 groups of testers waiting in line to use it, making it difficult to improve the testing efficiency of automotive EPS electronic control units.
[0005] Therefore, it is necessary to design a vehicle power-on signal control circuit using a relay to realize the control of the KL15 vehicle power-on signal in a low-cost manner, thereby improving the efficiency of automotive EPS electronic control unit testing. Summary of the invention
[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a vehicle power-on signal control circuit using a relay, which can realize the control of the KL15 vehicle power-on signal in a low-cost manner, thereby improving the efficiency of automobile EPS electronic control unit testing.
[0007] In order to achieve the above-mentioned purpose, the utility model designs a vehicle power-on signal control circuit using a relay, including a CANoe box IO port, a relay, an EPS to be tested, and a power supply. The positive pole of the power supply is divided into two paths, which are respectively connected to the positive pole of the EPS to be tested and one end of the normally closed contact of the relay, and the other end of the normally closed contact of the relay is connected to the KL15 vehicle power-on signal terminal of the EPS to be tested. The negative pole of the power supply is divided into three paths, which are respectively connected to the negative pole of the EPS to be tested, pin No. 9 of the IO port of the CANoe box, and one end of the relay coil, and pin No. 8 of the IO port of the CANoe box is connected to the other end of the relay coil.
[0008] The IO port of the CANoe box is a DB9 interface.
[0009] The normally open contact of the relay is suspended.
[0010] The power supply is a program-controlled power supply.
[0011] Compared with the prior art, the utility model designs the circuit connection of the CANoe box IO port, the relay, the EPS to be tested, and the power supply. The power-on signal of the KL15 whole vehicle can be controlled in a low-cost manner by turning on and off the relay, thereby improving the efficiency of the automobile EPS electronic control unit test. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a circuit diagram of the utility model. DETAILED DESCRIPTION
[0013] The utility model is now further described with reference to the accompanying drawings.
[0014] See also Figure 1 The utility model designs a vehicle power-on signal control circuit using a relay, including a CANoe box IO port, a relay, an EPS to be tested, and a power supply. The positive pole of the power supply B1 is divided into two paths, respectively connected to the positive pole of the EPS to be tested and one end of the normally closed contact of the relay K1, the other end of the normally closed contact of the relay K1 is connected to the KL15 vehicle power-on signal terminal of the EPS to be tested, the negative pole of the power supply B1 is divided into three paths, respectively connected to the negative pole of the EPS to be tested, the No. 9 pin of the IO port X1 of the CANoe box, and one end of the coil of the relay K1, and the No. 8 pin of the IO port X1 of the CANoe box is connected to the other end of the coil of the relay K1.
[0015] The CANoe box is a CAN data conversion box that parses CAN messages. The CANoe box comes with an IO port X1, which is a DB9 interface with a total of 9 pins. The utility model uses pins 8 and 9, both of which are pins for digital signals. Pin 8 is a DO port, that is, when pin 8 is assigned a value of 1, pin 8 outputs a high level, and when pin 8 is assigned a value of 0, pin 8 outputs a low level. Pin 9 is a digital signal reference ground.
[0016] Power supply B1 is a program-controlled power supply, and power supply B1 supplies power to the EPS to be tested. When pin 8 of IO port X1 of CANoe box outputs low level, the voltages at both ends of relay K1 coil are equal, relay K1 coil is not powered, normally closed contact is closed, and KL15 vehicle power-on signal is connected; when pin 8 of IO port X1 of CANoe box outputs high level, there is a voltage difference at both ends of relay K1 coil, relay K1 coil is powered, normally closed contact is disconnected, and KL15 vehicle power-on signal is disconnected, thereby achieving the purpose of controlling KL15 vehicle power-on signal.
[0017] The utility model selects the normally closed contact of the relay K1, and the normally open contact of the relay K1 is suspended. This is done so that when the simulation is running, there is no need to control the DO port, and the EPS to be tested is in a working state.
[0018] The IO port X1 and the power supply B1 of the CANoe box are both existing equipment and do not need to be purchased separately. The additional cost required for the circuit of the utility model is limited to the relay K1. The price of the relay K1 is relatively low, generally a few yuan, and the cost is effectively controlled.
[0019] The utility model designs the circuit connection of the CANoe box IO port, relay, EPS to be tested, and power supply. The power-on signal of the KL15 whole vehicle can be controlled in a low-cost manner by turning on and off the relay, thereby improving the efficiency of the automobile EPS electronic control unit test.
Claims
1. A vehicle power-on signal control circuit using a relay, including a CANoe box IO port, a relay, an EPS to be tested, and a power supply, characterized in that: The positive pole of the power supply (B1) is divided into two paths, which are respectively connected to the positive pole of the EPS to be tested and one end of the normally closed contact of the relay (K1). The other end of the normally closed contact of the relay (K1) is connected to the KL15 vehicle power-on signal terminal of the EPS to be tested. The negative pole of the power supply (B1) is divided into three paths, which are respectively connected to the negative pole of the EPS to be tested, pin 9 of the IO port (X1) of the CANoe box, and one end of the coil of the relay (K1). Pin 8 of the IO port (X1) of the CANoe box is connected to the other end of the coil of the relay (K1).
2. The vehicle power-on signal control circuit using a relay according to claim 1, characterized in that: The CANoe box IO port (X1) is a DB9 interface.
3. The vehicle power-on signal control circuit using a relay according to claim 1, characterized in that: The normally open contact of the relay (K1) is suspended.
4. The vehicle power-on signal control circuit using a relay according to claim 1, characterized in that: The power supply (B1) is a program-controlled power supply.