CN217206835U

CN217206835U - Electronic water pump test system

Info

Publication number: CN217206835U
Application number: CN202220906905.5U
Authority: CN
Inventors: 朱俊
Original assignee: Suzhou Hezhongju Intelligent Equipment Co ltd
Current assignee: Suzhou Hezhongju Intelligent Equipment Co ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-08-16
Anticipated expiration: 2032-04-19

Abstract

The utility model relates to an electronic water pump test system, including controller and input device, controller department is provided with a plurality of communication interface and a plurality of industry control interface, input device passes through communication interface and controller communication connection, the controller passes through the electronic water pump that industry control interface connection examination awaits measuring, still be provided with extension module on the controller, extension module has CAN communication interface, through the electronic water pump that CAN communication interface connection examination awaits measuring. This application CAN satisfy the production test demand of the electronic water pump that has the CAN bus, and the test accuracy is high to CAN practice thrift the test cost.

Description

Electronic water pump test system

Technical Field

The utility model relates to an automatic change test equipment technical field, concretely relates to electronic water pump test system.

Background

In recent years, the quality requirements of consumers on new energy automobiles are increased year by year, electronic water pumps used by the new energy automobiles are more and more complex, the finished functions are also increased year by year, and after the electronic water pumps are updated, the matched test systems of the new energy automobiles also need to meet the requirements of new function tests and be upgraded and updated.

At present neotype domestic electronic pump has all been supporting the CAN bus, and its data transmission and function definition are all very abundant, original rotational speed signal, and function signal lines such as alarm signal are all replaced by it, and old water pump test platform lacks the CAN bus, CAN't satisfy new interface and test demand, specially need to design a neotype electronic pump test system of a section, satisfy the production test requirement of new article of enterprise, do benefit to the repacking to old water pump test platform simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electronic water pump test system, its production test demand that CAN satisfy the electronic water pump that has the CAN bus, the test accuracy is high to CAN practice thrift the test cost.

In order to achieve the purpose, the utility model adopts the technical proposal that:

the utility model provides an electronic water pump test system, includes controller and input device, and controller department is provided with a plurality of communication interface and a plurality of industry control interface, input device passes through communication interface and controller communication connection, the controller passes through the electronic water pump that industry control interface connection awaited measuring, still be provided with the extension module on the controller, the extension module has CAN communication interface, through the electronic water pump that CAN communication interface connection awaited measuring.

For the above technical solution, the applicant has further optimization measures.

Optionally, the external interface of the electronic water pump includes a power supply +, a power supply-, PWM, CAN _ H, CAN _ L, the CAN communication interface includes a CAN + interface and a CAN-interface, the industrial control interface includes a PWM control interface, power +, power-, the PWM control interface, power +, power-respectively interface with the PWM, power + and power-of the electronic water pump.

Optionally, the CAN + interface is connected to the CAN _ H and the CAN-interface is connected to the CAN _ L through CAN buses, and a clamping circuit formed by two TVS diodes is disposed between the CAN _ H and the CAN _ L.

Furthermore, the anode of the first TVS diode is connected to CAN _ H, and the cathode is grounded, and the anode of the second TVS diode is connected to CAN _ L, and the cathode is grounded.

Furthermore, a first protection resistor is connected in series between the CAN + interface and the CAN _ H, and a second protection resistor is connected in series between the CAN-interface and the CAN _ L.

Furthermore, the first protection resistor and the second protection resistor adopt patch type self-recovery fuses.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses an electronic water pump test system, it utilizes PLC as controller and CAN bus interface module as extension module, CAN satisfy CAN bus electronic water pump's production test demand, and when the circuit design, consider that car operation in-process electrostatic discharge, electrical overload and electrical property are instantaneous fast, specially installed the protective circuit who uses additional on the CAN bus, satisfy product technological requirement, also CAN satisfy the extension installation to old money water pump test platform simultaneously, practice thrift the cost that test equipment drops into.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:

fig. 1 is a block diagram of an overall structure of an electronic water pump testing system according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of an electronic water pump test system according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and fig. 2, this embodiment describes an electronic water pump testing system, which includes a controller 1 and an input device 4, where the controller 1 is provided with a plurality of communication interfaces and a plurality of industrial control interfaces, the input device 4 is in communication connection with the controller 1 through the communication interfaces, the controller 1 is connected to the electronic water pump 4 to be tested through the industrial control interfaces, the controller 1 is further provided with an extension module 2, the extension module 2 has a CAN communication interface, and the electronic water pump 4 to be tested is connected through the CAN communication interface.

The controller 1 selects the signal-fast middle-high end XD5 PLC, has high processing speed, supports 2-10-axis high-speed pulse output, has rich hardware interfaces, and can be connected with hardware resources such as the expansion module 2, the expansion ED and the expansion BD. And a PWM control line of the electronic water pump 4 is connected to an output Y0 pin, and the pulse width modulation function test can be finished. The expansion module 2 follows CAN 2.0A standard and conforms to CANopen standard communication sub-protocol DS301, and the controller 1 CAN perform CAN network communication based on CAN two-wire system signal wires with the electronic water pump 4 through the expansion module 2.

Specifically, the external interface of the electronic water pump 4 comprises a power supply +, a power supply-, PWM, and CAN _ H, CAN _ L, the CAN communication interface comprises a CAN + interface and a CAN-interface, and the industrial control interface comprises a PWM control interface, power +, and power-, and the PWM control interface, power +, and power-respectively interface with the PWM, power supply +, and power-of the electronic water pump 4.

The CAN + interface is connected with the CAN _ H and the CAN-interface is connected with the CAN _ L through CAN buses, and a clamping circuit consisting of two TVS diodes is arranged between the CAN _ H and the CAN _ L, so that any high-energy pulse is led to the ground to be far away from the transceiver, and the rear-end chip CAN bear smaller surge pressure when transient surge occurs. The anode of the first TVS diode is connected with CAN _ H, and the cathode of the first TVS diode is grounded, and the anode of the second TVS diode is connected with CAN _ L, and the cathode of the second TVS diode is grounded.

Furthermore, a first protection resistor is connected in series between the CAN + interface and the CAN _ H, and a second protection resistor is connected in series between the CAN-interface and the CAN _ L. The first protection resistor and the second protection resistor adopt patch type self-recovery fuses, and DW-MSM050/24 is adopted in the embodiment.

More than, utilize CAN bus hardware test and protection circuit, CAN develop latest 4 hardware test systems of electronic water pump fast to PLC richenes the resource as the hardware of controller 1, possesses the later stage upgrading function, also is convenient for directly utilize the application of old testboard to expand.

To sum up, the utility model discloses an electronic water pump test system, it utilizes PLC as controller 1 and CAN bus interface module as extension module 2, CAN satisfy CAN bus electronic water pump 4's production test demand, and when the circuit design, consider that car operation in-process electrostatic discharge, electric overload and electrical property are instantaneous fast, specially installed the protective circuit who protects usefulness additional on the CAN bus, satisfy product technological requirement, also CAN satisfy the extension installation to old money water pump test platform simultaneously, practice thrift the cost that test equipment drops into.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an electronic water pump test system, includes controller and input device, and controller department is provided with a plurality of communication interface and a plurality of industry control interface, input device passes through communication interface and controller communication connection, the controller passes through the electronic water pump that industry control interface connection awaited measuring, its characterized in that, still be provided with the extension module on the controller, the extension module has CAN communication interface, through the electronic water pump that CAN communication interface connection awaited measuring.

2. The electronic water pump test system of claim 1, wherein the external interface of the electronic water pump comprises power supply +, power supply-, PWM, CAN _ H, CAN _ L, the CAN communication interface comprises CAN + interface and CAN-interface, the industrial control interface comprises PWM control interface, power +, power-, the PWM control interface, power +, power-respectively interface with PWM, power supply +, and power-of the electronic water pump.

3. The electronic water pump test system according to claim 2, wherein the CAN + interface is connected to the CAN _ H and the CAN-interface is connected to the CAN _ L via CAN buses, and a clamping circuit comprising two TVS diodes is disposed between the CAN _ H and the CAN _ L.

4. The electronic water pump test system of claim 3, wherein the anode of the first TVS diode is connected to CAN _ H and the cathode is grounded, and the anode of the second TVS diode is connected to CAN _ L and the cathode is grounded.

5. The electronic water pump test system according to any one of claims 2 to 4, wherein a first protection resistor is connected in series between the CAN + interface and the CAN _ H, and a second protection resistor is connected in series between the CAN-interface and the CAN _ L.

6. The electronic water pump test system according to claim 5, wherein the first protection resistor and the second protection resistor are patch type self-recovery fuses.