Testing device for gearbox controller

Abstract

The utility model provides a testing device for a gearbox controller, which can solve the problems that the existing device is high in purchasing and testing cost, cannot be used for testing on a real vehicle and is poor in accuracy and intuition. The device comprises a whole vehicle signal input and output wire harness, a gearbox signal input and output wire harness and a test box provided with a first interface, a second interface, a third interface, a fourth interface, a first connecting unit and a second connecting unit. The signal input end of the first interface is externally connected with the signal output end of a whole vehicle controller through a whole vehicle signal input wire harness, the signal output end is connected with the signal input end of the third interface through the first connecting unit, and the signal output end of the third interface is externally connected with a gearbox controller to be tested through a whole vehicle signal output wire harness. The signal input end of the second interface is externally connected with the signal output end of a gearbox sensor through a gearbox signal input wire harness, the signal output end of the second interface is connected with the signal input end of the fourth interface through a second connecting unit, and the signal output end of the fourth interface is externally connected with a gearbox controller to be tested through a gearbox signal output wire harness.

Description

Technical Field

[0001] The utility model relates to a testing device, in particular to a testing device for a gearbox controller. Background Art

[0002] The transmission controller is usually installed in the transmission housing or the interior of the vehicle cab. It is used to calculate and judge the vehicle's operating status and is a key component for controlling the transmission shifting and starting. No matter which type of automatic transmission, the controller is indispensable. The controller generally needs to receive vehicle signals and transmission signals. Vehicle signals include engine signals, shifter signals, brake system signals, and instrument signals. Through these signals, the controller can identify the driver's intention and the vehicle's operating status. Transmission signals include displacement signals, speed signals, solenoid valve signals, and oil temperature signals. Using these signals, the controller can identify the gear position and status of the transmission. The controller can also send commands to the solenoid valve to execute shifting and starting instructions. Therefore, in the development process of the transmission, the testing of the controller is very important. At present, test benches or HIL (hardware in the loop test) benches are usually used to test the controller, especially for fault diagnosis tests. However, the purchase cost and testing cost of the test bench or HIL bench are high, and it is impossible to test on the actual vehicle, and the test accuracy and intuitiveness are not high.

[0003] Chinese patent CN206479837U discloses an AMT gearbox controller detection device, including a housing, a current and voltage meter, a power switch, a power-on indicator light, a power interface, a switch power adapter, a gearbox controller connector, a USB interface, a gearbox controller to be tested, and a computer. The gearbox controller to be tested is connected to the gearbox controller connector, the USB interface is connected to the computer, the power interface is on the side surface of the housing, and is connected to an external power supply through a switch power adapter. A test board is installed inside the housing, and a single-chip microcomputer, a power module connected to the single-chip microcomputer, a storage module, an input detection module, an output detection module, a CAN communication module, and a drive module are arranged on the test board. However, the purchase cost and testing cost of the detection device are high, and it cannot be tested on an actual vehicle, and the test accuracy and intuitiveness are not high. Utility Model Content

[0004] The utility model aims to solve the technical problems that the test device of the existing gearbox controller has high purchase cost and test cost, cannot be tested on the actual vehicle, and has low test accuracy and intuitiveness, and provides a test device for the gearbox controller.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A test device for a gearbox controller, which is special in that:

[0007] Including test box, vehicle signal input harness, gearbox signal input harness, vehicle signal output harness and gearbox signal output harness;

[0008] The test box is provided with a first interface, a second interface, a third interface, a fourth interface, a first connecting unit and a second connecting unit;

[0009] The signal input end of the first interface is connected to the signal output end of the vehicle controller through the vehicle signal input harness; the signal output end of the first interface is connected to the signal input end of the third interface through the first connection unit; the signal output end of the third interface is connected to the fifth interface of the gearbox controller to be tested through the vehicle signal output harness;

[0010] The signal input end of the second interface is connected to the signal output end of the external transmission sensor through the transmission signal input harness; the signal output end of the second interface is connected to the signal input end of the fourth interface through the second connection unit; the signal output end of the fourth interface is connected to the sixth interface of the transmission controller to be tested through the transmission signal output harness.

[0011] Further, the signal output end of the first interface is M first pins; the signal input end of the third interface is M third pins; the M first pins are connected to the M third pins in a one-to-one correspondence through the first connection unit;

[0012] The signal output end of the second interface is N second pins; the signal input end of the fourth interface is N fourth pins; the N second pins are connected one-to-one with the N fourth pins through the second connection unit; wherein M≥20, N≥20, and M and N are both positive integers.

[0013] Further, the first connection unit includes K first pinhole assemblies; each of the first pinhole assemblies includes two first pinholes connected to each other; the M first pins are respectively connected to one first pinhole in the M first pinhole assemblies in a one-to-one correspondence, and another first pinhole in the M first pinhole assemblies is connected to M third pins in a one-to-one correspondence;

[0014] The second connecting unit includes L second pinhole assemblies; each of the second pinhole assemblies includes two interconnected second pinholes; the N second pins are respectively connected one-to-one with one second pinhole in the N second pinhole assemblies, and another second pinhole in the N second pinhole assemblies is connected one-to-one with N fourth pins; wherein, K≥M, L≥N, and K and L are both positive integers.

[0015] Furthermore, the two first pinholes of each of the first pinhole assemblies are connected by wire welding or jumper wires;

[0016] The two second pinholes of each second pinhole assembly are connected by wire welding or jumper wire.

[0017] Furthermore, the K first pinhole assemblies and the L second pinhole assemblies are evenly arranged on the test box.

[0018] Furthermore, the first interface, the second interface, the third interface, and the fourth interface are disposed on a side of the test box and are arranged linearly.

[0019] Beneficial effects of the utility model:

[0020] 1. The utility model provides a test device for a transmission controller, wherein, due to the small size of the test box, the test device can test the controller in a laboratory or on an actual vehicle, effectively reducing the test cost. In addition, when the test is performed on an actual vehicle, the test accuracy and intuitiveness are high. The overall structure of the test device is simple and the design cost is low.

[0021] 2. In the utility model, the test box is designed according to the signal requirements of the controller. The first pin of the first interface is connected one-to-one with the third pin of the third interface through the first connecting unit, and the second pin of the second interface is connected one-to-one with the fourth pin of the fourth interface through the second connecting unit. It can truly reflect the input and output signals of the controller, further improving the accuracy and intuitiveness of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a structural schematic diagram of a test device embodiment of a transmission controller.

[0023] Description of reference numerals:

[0024] 1-test box, 10-first interface, 11-second interface, 12-third interface, 13-fourth interface, 14-first connection unit, 15-second connection unit, 16-first pin, 17-third pin, 18-second pin, 19-fourth pin, 2-vehicle signal input harness, 3-gearbox signal input harness, 4-gearbox controller to be tested, 40-fifth interface, 41-sixth interface, 5-first pinhole assembly, 50-first pinhole, 6-second pinhole assembly, 60-second pinhole, 7-vehicle signal output harness, 8-gearbox signal output harness. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0026] like Figure 1As shown, a test device for a transmission controller includes a test box 1, a vehicle signal input harness 2, a transmission signal input harness 3, a vehicle signal output harness 7, and a transmission signal output harness 8. Specifically, the test box 1 is provided with a first interface 10, a second interface 11, a third interface 12, a fourth interface 13, a first connection unit 14, and a second connection unit 15. The first interface 10, the second interface 11, the third interface 12, and the fourth interface 13 are arranged on one side of the test box 1 and are arranged linearly. Among them, the signal output end of the first interface 10 is M first pins 16, the signal output end of the second interface 11 is N second pins 18, the signal input end of the third interface 12 is M third pins 17, and the signal input end of the fourth interface 13 is N fourth pins 19. The first connection unit 14 includes K first pinhole assemblies 5, each of which includes two first pinholes 50, and the two first pinholes 50 are connected by wire welding or jumper wires, and in this embodiment, they are connected by jumper wires. The M first pins 16 are respectively connected to one of the first pinholes 50 in the M first pinhole assemblies 5 in a one-to-one correspondence, and another first pinhole 50 in the M first pinhole assemblies 5 is connected to the M third pins 17 in a one-to-one correspondence. The signal input end of the first interface 10 is connected to the signal output end of the vehicle controller through the vehicle signal input harness 2 for receiving the vehicle signal. The signal output end of the third interface 12 is connected to the fifth interface 40 of the gearbox controller 4 to be tested through the vehicle signal output harness 7 for inputting signals to the controller. The second connection unit 15 includes L second pinhole assemblies 6, K first pinhole assemblies 5 and L second pinhole assemblies 6 are evenly arranged on the test box 1, and each second pinhole assembly 6 includes two second pinholes 60, and the two second pinholes 60 are connected by wire welding or jumper wires, and in this embodiment, they are connected by jumper wires. The N second pins 18 are respectively connected to one second pinhole 60 in the N second pinhole assemblies 6 in one-to-one correspondence, and another second pinhole 60 in the N second pinhole assemblies 6 is connected to the N fourth pins 19 in one-to-one correspondence. The signal input end of the second interface 11 is connected to the signal output end of the gearbox sensor through the gearbox signal input harness 3 for receiving the gearbox signal. The signal output end of the fourth interface 13 is connected to the sixth interface 41 of the gearbox controller 4 to be tested through the gearbox signal output harness 8 for inputting signals to the controller. Wherein, M≥20, N≥20, K≥M, L≥N, and M, N, K and L are all positive integers. In this embodiment, M=20, N=20, K=20, L=20. In other embodiments, K>M, L>N, when one of the first pinhole assemblies 5 and the second pinhole assemblies 6 cannot be used due to damage, the redundant first pinhole assembly 5 and the second pinhole assembly 6 can be selected to be used as a replacement.

[0027] Taking a certain type of AMT (automatic mechanical transmission) controller as an example, the AMT controller needs to receive the vehicle CAN signal, power signal, ground signal and some hard-wire signals, as well as the transmission speed signal, displacement signal and solenoid valve signal. The process of testing the AMT controller on an actual vehicle using the above test device is as follows:

[0028] Step 1. The signal input end of the first interface 10 is connected to the signal output end of the vehicle controller through the vehicle signal input harness 2; the 20 first pins 16 of the first interface 10 are connected one-to-one with the 20 third pins 17 of the third interface 12 through 40 first pin holes 50 thereof.

[0029] Step 2, the signal input end of the second interface 11 is connected to the signal output end of the external gearbox sensor through the gearbox signal input harness 3; the 20 second pins 18 of the second interface 11 are respectively connected to the 20 fourth pins 19 of the fourth interface 13 through 40 second pinholes 60 therein.

[0030] Step 3, the signal output end of the third interface 12 is connected to the fifth interface 40 of the AMT controller through the vehicle signal output harness 7; the signal output end of the fourth interface 13 is connected to the sixth interface 41 of the AMT controller through the gearbox signal output harness 8.

[0031] Step 4: Power on the vehicle and put the AMT controller into normal working condition.

[0032] Step 5: Carry out testing work according to the test requirements, and test the fault response mechanism of the AMT controller under fault modes such as open circuit, short circuit to power, short circuit to ground, high voltage and low voltage. For example, to test the fault response mechanism of the AMT controller after the circuit between the two first pinholes 50 is open, it is only necessary to unplug the rubber plug between the two first pinholes 50.

[0033] It should be noted that the AMT controller can also be tested in a laboratory using the above-mentioned testing device, and the testing process refers to the above-mentioned process.

[0034] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or replacements within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A test device for a transmission controller, characterized in that: It comprises a test box (1), a whole vehicle signal input wiring harness (2), a gearbox signal input wiring harness (3), a whole vehicle signal output wiring harness (7) and a gearbox signal output wiring harness (8); The test box (1) is provided with a first interface (10), a second interface (11), a third interface (12), a fourth interface (13), a first connection unit (14) and a second connection unit (15); The signal input end of the first interface (10) is externally connected to the signal output end of the vehicle controller via the vehicle signal input harness (2); the signal output end of the first interface (10) is connected to the signal input end of the third interface (12) via the first connection unit (14); the signal output end of the third interface (12) is externally connected to the fifth interface (40) of the gearbox controller (4) to be tested via the vehicle signal output harness (7); The signal input end of the second interface (11) is connected to the signal output end of the gearbox sensor via the gearbox signal input harness (3); the signal output end of the second interface (11) is connected to the signal input end of the fourth interface (13) via the second connection unit (15); the signal output end of the fourth interface (13) is connected to the sixth interface (41) of the gearbox controller (4) to be tested via the gearbox signal output harness (8).

2. The test device for a transmission controller according to claim 1, characterized in that: The signal output end of the first interface (10) is M first pins (16); the signal input end of the third interface (12) is M third pins (17); the M first pins (16) are connected to the M third pins (17) in a one-to-one correspondence via a first connection unit (14); The signal output end of the second interface (11) is N second pins (18); the signal input end of the fourth interface (13) is N fourth pins (19); the N second pins (18) are connected to the N fourth pins (19) in a one-to-one correspondence via a second connection unit (15); wherein M≥20, N≥20, and M and N are both positive integers.

3. The test device for a transmission controller according to claim 2, characterized in that: The first connection unit (14) comprises K first pinhole assemblies (5); each of the first pinhole assemblies (5) comprises two first pinholes (50) connected to each other; the M first pins (16) are respectively connected to one first pinhole (50) in the M first pinhole assemblies (5) in a one-to-one correspondence, and another first pinhole (50) in the M first pinhole assemblies (5) is respectively connected to M third pins (17) in a one-to-one correspondence; The second connection unit (15) comprises L second pinhole assemblies (6); each of the second pinhole assemblies (6) comprises two second pinholes (60) connected to each other; the N second pins (18) are respectively connected to one second pinhole (60) in the N second pinhole assemblies (6) in a one-to-one correspondence, and another second pinhole (60) in the N second pinhole assemblies (6) is connected to N fourth pins (19) in a one-to-one correspondence; wherein K≥M, L≥N, and K and L are both positive integers.

4. The test device for a transmission controller according to claim 3, characterized in that: The two first pinholes (50) of each of the first pinhole assemblies (5) are connected via wire welding or jumper wires; The two second pinholes (60) of each of the second pinhole assemblies (6) are connected via wire welding or jumper wires.

5. The test device for a transmission controller according to claim 4, characterized in that: The K first pinhole assemblies (5) and the L second pinhole assemblies (6) are evenly arranged on the test box (1).

6. The test device for a transmission controller according to any one of claims 1 to 5, characterized in that: The first interface (10), the second interface (11), the third interface (12), and the fourth interface (13) are arranged on a side of the test box (1) and are arranged linearly.

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