Automobile network management test system

Abstract

The utility model relates to an automobile network management test system which comprises a battery, an upper computer and a serial port relay. The power supply end of the serial port relay is connected with the battery; a data communication end of the serial port relay is connected with an IO port of the upper computer; the power supply anode of the to-be-tested sample piece is connected with the NO port of the first relay output end of the serial port relay, and the power supply cathode of the to-be-tested sample piece is connected with the NO port of the second relay output end of the serial port relay. According to the automobile network management test system provided by the embodiment of the invention, the test condition coverage is comprehensive, and environment establishment and network management test can be completed for air conditioners, instruments, vehicle machines and the like; the test can be carried out before the whole vehicle is powered on, and flexible control can be carried out according to a test case.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile network management, and in particular relates to an automobile network management test system. Background Art

[0002] Currently, the vehicle itself is in control during the on-board network management test. Before the test, the vehicle needs to turn the key or press a button to start the power supply so that the battery can provide power to the vehicle power supply module. The power supply module attracts the relay to supply power to other controllers of the vehicle. In this way, it is impossible to flexibly control according to the test case, which makes the vehicle network management test more difficult. Utility Model Content

[0003] The present application provides an automobile network management test system to solve the problem that the automobile network management test needs to be powered on during the automobile in-vehicle network management test, which makes the automobile network management test more difficult.

[0004] An automobile network management test system includes a battery, a host computer and a serial port relay;

[0005] The power supply end of the serial relay is connected to the battery; the data communication end of the serial relay is connected to the IO port of the host computer;

[0006] The normally-open end of the first switch connected to the first relay output end of the serial port relay is connected to the power supply end of the serial port relay, the normally-open end of the first switch connected to the first relay output end of the serial port relay is connected to the COM port of the first relay output end of the serial port relay through a third diode, the anode of the third diode is connected to the normally-open end of the first switch connected to the first relay output end of the serial port relay, and the cathode of the third diode is connected to the COM port of the first relay output end of the serial port relay; the coil end of the first switch connected to the first relay output end of the serial port relay is connected to the first control output end of the serial port relay;

[0007] The normally-open end of the second switch connected to the second relay output end of the serial port relay is connected to the power supply end of the serial port relay, the normally-open end of the second switch connected to the second relay output end of the serial port relay is connected to the COM port of the second relay output end of the serial port relay through a fourth diode, the anode of the third diode is connected to the normally-open end of the second switch connected to the second relay output end of the serial port relay, and the cathode of the third diode is connected to the COM port of the second relay output end of the serial port relay; the coil end of the second switch connected to the second relay output end of the serial port relay is connected to the second control output end of the serial port relay;

[0008] The positive pole of the power supply of the sample to be tested is connected to the NO port of the first relay output end of the serial port relay, and the negative pole of the power supply of the sample to be tested is connected to the NO port of the second relay output end of the serial port relay.

[0009] Optionally, it also includes an anti-reverse connection circuit, and the power supply end of the serial port relay is connected to the battery through the anti-reverse connection circuit.

[0010] Optionally, the reverse connection prevention circuit includes a first switch tube, a first resistor, a second resistor and a first diode;

[0011] The first end of the first switch tube is connected to the positive electrode of the battery, the second end of the first switch tube is respectively connected to the first end of the second resistor and the cathode of the first diode, the third end of the first switch tube is respectively connected to the first end of the first resistor, the second end of the second resistor, and the anode of the first diode; the second end of the first resistor is respectively connected to the negative electrode of the battery and the ground terminal of the serial port relay; the cathode of the first diode is connected to the power supply terminal of the serial port relay.

[0012] Optionally, the host computer is connected to the data communication end of the serial port relay through the second diode, the first light-emitting diode, the second light-emitting diode, the third resistor and the fourth resistor;

[0013] The first IO port of the host computer is connected to the anode of the first light-emitting diode, the cathode of the first light-emitting diode is connected to the second end of the third resistor, and the first end of the third resistor is connected to the first communication data end of the serial port relay;

[0014] The second IO port of the host computer is connected to the anode of the second light-emitting diode, the cathode of the second light-emitting diode is connected to the second end of the fourth resistor, the first end of the fourth resistor is connected to the anode of the second diode, and the cathode of the second diode is connected to the second communication data end of the serial port relay.

[0015] Optionally, the data communication terminal of the serial port relay is connected to the IO port of the host computer via an RS232 serial port line.

[0016] Optionally, the sample to be tested includes multiple samples, and the multiple samples to be tested are connected in parallel.

[0017] Optionally, the first switch tube is a MOS tube, the first end of the first switch tube is the drain of the MOS tube, the second end of the first switch tube is the source of the MOS tube, and the third end of the first switch tube is the gate of the MOS tube.

[0018] Beneficial effects: The solution provided in this embodiment covers comprehensive test conditions. Whether it is air conditioning, instruments, car computers, etc., the environment can be set up and network management tests can be performed; testing can also be performed before the entire vehicle is powered on, and can be flexibly controlled according to test cases. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 A schematic diagram of the structure of an automobile network management test system provided by this exemplary embodiment.

[0021] Reference numerals:

[0022] R1, the first resistor; R2, the second resistor; R3, the third resistor; R4, the fourth resistor; Q1, the first switch tube; D1, the first diode; D2, the second diode; D3, the third diode; D4, the fourth diode; D5, the first light-emitting diode; D6, the second light-emitting diode. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] Example

[0027] like Figure 1As shown, this embodiment provides a vehicle network management test system, including a battery, a host computer, a serial port relay, an anti-reverse connection circuit and a sample to be tested. In this embodiment, the serial port relay adopts the 8-channel digital input 8-channel 30A relay output module of Zhongsheng Technology, model ZS-D10-R-30A-8, and other serial port relays can also be used to realize the functions of this solution; Figure 1 : is a simplified schematic diagram of a serial port relay, some pins are not involved in this embodiment and are therefore not shown.

[0028] In this embodiment, the original serial port relay module is improved, the normally open end of the first switch connected to the first relay output end of the serial port relay is disconnected from the COM port of the first relay output end of the serial port relay, and the coil end of the first switch connected to the first relay output end of the serial port relay is disconnected from the original connection. The improved structure is: the normally open end of the first switch connected to the first relay output end of the serial port relay is connected to the power supply end of the serial port relay, the normally open end of the first switch connected to the first relay output end of the serial port relay is connected to the COM port of the first relay output end of the serial port relay through the third diode D3, the anode of the third diode D3 is connected to the normally open end of the first switch connected to the first relay output end of the serial port relay, and the cathode of the third diode D3 is connected to the COM port of the first relay output end of the serial port relay; the coil end of the first switch connected to the first relay output end of the serial port relay is connected to the first control output end of the serial port relay.

[0029] The normally-open end of the second switch connected to the second relay output end of the serial port relay is disconnected from the COM port of the second relay output end of the serial port relay, and the coil end of the second switch connected to the second relay output end of the serial port relay is disconnected from the original connection. The improved structure is: the normally-open end of the second switch connected to the second relay output end of the serial port relay is connected to the power supply end of the serial port relay, the normally-open end of the second switch connected to the second relay output end of the serial port relay is connected to the COM port of the second relay output end of the serial port relay through the fourth diode D4, the anode of the third diode D3 is connected to the normally-open end of the second switch connected to the second relay output end of the serial port relay, and the cathode of the third diode D3 is connected to the COM port of the second relay output end of the serial port relay; the coil end of the second switch connected to the second relay output end of the serial port relay is connected to the second control output end of the serial port relay.

[0030] The positive pole of the power supply of the sample to be tested is connected to the NO port of the first relay output end of the serial port relay, and the negative pole of the power supply of the sample to be tested is connected to the NO port of the second relay output end of the serial port relay. The serial port relay includes 8 relay output ends. In this embodiment, only two of them are used to control the two relay output ends to output different voltages to complete the test of the sample to be tested.

[0031] The samples to be tested include vehicle computers, gateways, instruments, air conditioners, etc. Multiple samples to be tested are connected in parallel, and multiple samples to be tested can be tested at the same time.

[0032] The power supply end of the serial port relay is connected to the battery through an anti-reverse connection circuit; the anti-reverse connection circuit includes a first switch tube Q1, a first resistor R1, a second resistor R2 and a first diode D1; the first end of the first switch tube Q1 is connected to the positive electrode of the battery, the second end of the first switch tube Q1 is respectively connected to the first end of the second resistor R2 and the cathode of the first diode, and the third end of the first switch tube Q1 is respectively connected to the first end of the first resistor R1, the second end of the second resistor R2, and the anode of the first diode D1; the second end of the first resistor R1 is respectively connected to the negative electrode of the battery and the grounding end of the serial port relay; the cathode of the first diode D1 is connected to the power supply end of the serial port relay. The first switch tube Q1 is a MOS tube, the first end of the first switch tube Q1 is the drain of the MOS tube, the second end of the first switch tube Q1 is the source of the MOS tube, and the third end of the first switch tube Q1 is the gate of the MOS tube.

[0033] The host computer is used to output a control signal to the data communication end of the serial port relay, thereby controlling the output of the serial port relay. The host computer and the serial port relay can be directly connected using an RS232 serial port line, or further improved by connecting the host computer and the serial port relay through a second diode D2, a first light-emitting diode D5, a second light-emitting diode D6, a third resistor R3, and a fourth resistor R4; specifically, the first IO port of the host computer is connected to the anode of the first light-emitting diode D5, the cathode of the first light-emitting diode D5 is connected to the second end of the third resistor R3, and the first end of the third resistor R3 is connected to the first communication data end of the serial port relay. In this embodiment, the first communication data end of the serial port relay is a communication data receiving end RXD; the second IO port of the host computer is connected to the anode of the second light-emitting diode D6, the cathode of the second light-emitting diode D6 is connected to the second end of the fourth resistor R4, the first end of the fourth resistor R4 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the second communication data end of the serial port relay. In this embodiment, the second communication data receiving end of the serial port relay is a communication data transmitting end TXD.

[0034] This embodiment also includes a test device, which is connected to the host computer. The test device uses CANoe through the CAPL programming language to control the serial port relay to switch on and off according to the network management test case, and at the same time records the controller network management status to complete the test and export the report.

[0035] In the original test scheme, the first vehicle-mounted relay and the second vehicle-mounted relay are controlled by the original vehicle power supply module. The vehicle can only be tested by turning the key or pressing a button to start the power on, but in this embodiment, the first vehicle-mounted relay and the second vehicle-mounted relay are not used for control. Instead, an improved serial port relay is used to connect to the vehicle power supply, that is, the battery in this embodiment. The car's normal power is used to connect the serial port relay to control the test sample, so as to simulate the working conditions after the vehicle is powered on and off, so as to test the test sample.

[0036] When in use, the host computer is used to control the output signals of the first control output terminal and the second control output terminal of the serial port relay. The specific control program is configurable by technical personnel in this field. The first control output terminal and the second control output terminal of the serial port relay control the first relay output terminal and the second relay output terminal of the serial port relay, so that the positive and negative poles of the sample to be tested receive the voltage signal to complete power on or off.

[0037] The solution provided in this embodiment covers comprehensive test conditions. Whether it is air conditioning, instrumentation, or vehicle computer, the environment can be set up and network management tests can be performed. Testing can also be performed before the vehicle is powered on, and can be flexibly controlled according to test cases. An anti-reverse connection circuit is set to increase circuit stability, and a light-emitting diode is set to facilitate observation of whether communication data is transmitted normally.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application.

Claims

1. An automotive network management test system, characterized in that: Including battery, host computer and serial port relay; The power supply end of the serial relay is connected to the battery; the data communication end of the serial relay is connected to the IO port of the host computer; The normally-open end of the first switch connected to the first relay output end of the serial port relay is connected to the power supply end of the serial port relay, the normally-open end of the first switch connected to the first relay output end of the serial port relay is connected to the COM port of the first relay output end of the serial port relay through a third diode, the anode of the third diode is connected to the normally-open end of the first switch connected to the first relay output end of the serial port relay, and the cathode of the third diode is connected to the COM port of the first relay output end of the serial port relay; The coil end of the first switch connected to the first relay output end of the serial port relay is connected to the first control output end of the serial port relay; The normally-open end of the second switch connected to the second relay output end of the serial port relay is connected to the power supply end of the serial port relay, the normally-open end of the second switch connected to the second relay output end of the serial port relay is connected to the COM port of the second relay output end of the serial port relay through a fourth diode, the anode of the third diode is connected to the normally-open end of the second switch connected to the second relay output end of the serial port relay, and the cathode of the third diode is connected to the COM port of the second relay output end of the serial port relay; the coil end of the second switch connected to the second relay output end of the serial port relay is connected to the second control output end of the serial port relay; The positive pole of the power supply of the sample to be tested is connected to the NO port of the first relay output end of the serial port relay, and the negative pole of the power supply of the sample to be tested is connected to the NO port of the second relay output end of the serial port relay.

2. The vehicle network management test system according to claim 1, characterized in that: It also includes an anti-reverse connection circuit, and the power supply end of the serial port relay is connected to the battery through the anti-reverse connection circuit.

3. The vehicle network management test system according to claim 2, characterized in that: The anti-reverse connection circuit includes a first switch tube, a first resistor, a second resistor and a first diode; The first end of the first switch tube is connected to the positive electrode of the battery, the second end of the first switch tube is respectively connected to the first end of the second resistor and the cathode of the first diode, the third end of the first switch tube is respectively connected to the first end of the first resistor, the second end of the second resistor, and the anode of the first diode; the second end of the first resistor is respectively connected to the negative electrode of the battery and the ground terminal of the serial port relay; the cathode of the first diode is connected to the power supply terminal of the serial port relay.

4. The vehicle network management test system according to claim 2, characterized in that: The host computer is connected to the data communication end of the serial port relay through the second diode, the first light emitting diode, the second light emitting diode, the third resistor and the fourth resistor; The first IO port of the host computer is connected to the anode of the first light-emitting diode, the cathode of the first light-emitting diode is connected to the second end of the third resistor, and the first end of the third resistor is connected to the first communication data end of the serial port relay; The second IO port of the host computer is connected to the anode of the second light-emitting diode, the cathode of the second light-emitting diode is connected to the second end of the fourth resistor, the first end of the fourth resistor is connected to the anode of the second diode, and the cathode of the second diode is connected to the second communication data end of the serial port relay.

5. The vehicle network management test system according to claim 2, characterized in that: The data communication end of the serial relay is connected to the IO port of the host computer through an RS232 serial line.

6. An automobile network management test system according to any one of claims 1 to 5, characterized in that: The samples to be tested include multiple samples, which are connected in parallel.

7. The vehicle network management test system according to claim 3, characterized in that: The first switch tube is a MOS tube, the first end of the first switch tube is the drain of the MOS tube, the second end of the first switch tube is the source of the MOS tube, and the third end of the first switch tube is the gate of the MOS tube.

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