CN211627742U

CN211627742U - Automobile circuit measuring device

Info

Publication number: CN211627742U
Application number: CN201920829960.7U
Authority: CN
Inventors: 刘云生; 王海元; 卢江洺; 高长春; 王亚楠
Original assignee: Dalian Hanxi New Energy Technology Co ltd
Current assignee: Dalian Hanxi New Energy Technology Co ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-10-02
Anticipated expiration: 2029-06-04

Abstract

The embodiment of the utility model discloses car circuit measuring device, it includes test wire and measurement box two parts, its characterized in that: the test line comprises a first plug-in element matched with an electronic control system module ECU of the vehicle to be tested, a second plug-in element matched with an original vehicle wiring harness of the electronic control system of the vehicle to be tested, and a third plug-in element connected with the measurement box as a first wiring harness and a second wiring harness of the connection terminal, wherein the first plug-in element is connected with the second plug-in element through the first wiring harness, and the third plug-in element is connected with the second plug-in element through the second wiring harness; the measuring box comprises a shell and a measuring circuit structure arranged in the shell. The utility model discloses can improve maintenance technician's diagnosis car electrical system and the maintenance efficiency of the relevant trouble of electric elements, prolong the life of electric elements connector, avoid damaging relevant electrical part.

Description

Automobile circuit measuring device

Technical Field

The utility model relates to an automobile circuit measures technical field, especially relates to a novel automobile circuit measure device.

Background

In current automobile maintenance enterprises, failures of an automobile electric control system are often encountered, and if an automobile maintenance technician encounters a failure of the automobile electric control system, the maintenance technician often needs to use a multimeter or an oscilloscope to detect the signal voltage of the automobile electric control system or the control voltage of the actuating element for further detection. Meanwhile, when teachers in schools teach students, circuit faults cannot be visually detected, and the students cannot conveniently operate the teaching device.

Specifically, the method comprises the following steps: when the signal voltage of the electric control system is detected, the connector of the electric control system is pulled out, the probe is inserted into the connector from the back of the connector, and then measurement is carried out. For the measurement of the hidden components of the connector, a lot of accessories need to be detached, and then the probe is used for inserting the connector from the back of the plug for measurement, so that the process is time-consuming and labor-consuming, and the phenomena of damage of a waterproof plug on the back of the connector and poor contact of pins can be caused. For example: the customer proposes that the left front door of the vehicle can not enter without a key, and other doors can normally enter without keys. As shown in fig. 1, the keyless entry system circuit for a certain type of vehicle is shown, wherein a vehicle Body Control Module (BCM) is arranged at the upper end of the circuit, a left front external door handle and a right front external door handle are arranged at the lower end of the circuit, and a non-contact capacitive sensor and a low-frequency transmitting antenna are integrated in the door handles. At present, when a service technician needs to diagnose whether the left front door cannot be keyless into the left front door due to the failure of the left front door handle, the problem is often determined by reading the BCM data stream or taking down the left front door handle to check the component signals. For example, when determining whether the left front door handle capacitance sensor has a fault, an oscilloscope is needed to measure signal waveforms of the capacitance sensor in different states such as touch and non-touch, and determine whether the capacitance sensor can generate a specified signal waveform, and whether the signal waveform is consistent with a standard waveform in the touch and non-touch states is needed to be checked, which is time-consuming and labor-consuming in the process, and may cause the phenomena of damage of a waterproof plug on the back of a plug and poor contact of pins. For another example, as shown in fig. 1, in a college or automobile institute, a researcher needs to detect reference voltages of pins on a power system control unit (PCM) under different operating conditions of an engine. At present, adapter probes are often used for being inserted from the back of each plug connector of the PCM one by one, and then an oscilloscope or a multimeter is used for measuring, so that the process is time-consuming and labor-consuming, waterproof plugs on the back of the PCM plug can be damaged, and the phenomenon of poor contact of pins can be caused.

That is, in the existing technical solution related to automobile detection, there are problems related to the maintenance efficiency of the automobile electric control system and the failure of the electrical components and how to effectively avoid damaging the related devices.

Disclosure of Invention

Therefore, in order to overcome the defects of the prior art, the automobile circuit measuring device is particularly provided, so that the maintenance efficiency of a maintenance technician for diagnosing the automobile electric control system and the related faults of the electric elements is improved, the service life of the electric element connector is prolonged, and the related electric elements are prevented from being damaged.

The utility model provides an automobile circuit measuring device, its includes test wire and measurement box two parts, its characterized in that: the test line comprises a first plug-in element matched with an electronic control system module ECU of the vehicle to be tested, a second plug-in element matched with an original vehicle wiring harness of the electronic control system of the vehicle to be tested, and a third plug-in element connected with the measurement box as a first wiring harness and a second wiring harness of the connection terminal, wherein the first plug-in element is connected with the second plug-in element through the first wiring harness, and the third plug-in element is connected with the second plug-in element through the second wiring harness; the measuring box comprises a shell and a measuring circuit structure arranged in the shell.

Further, the measuring circuit structure comprises a communication socket and a measuring circuit board.

Furthermore, the communication socket is a ladder-shaped communication socket, and the measuring circuit board is connected to a corresponding adaptive test line of the corresponding electronic control system ECU of the vehicle to be tested through the ladder-shaped communication socket.

Furthermore, a hinge point is arranged at the connecting position of the second plug-in element and the original vehicle wire harness of the vehicle electronic control system to be tested, so that the two wire harnesses are connected in parallel.

Furthermore, the inside of the shell is provided with a supporting point for fixing the communication socket and the measuring circuit board.

Furthermore, the connecting harness wire inside the plug-in element is a silver-plated wire.

Implement the embodiment of the utility model provides a, will have following beneficial effect:

the utility model is connected in parallel with a control circuit for detection by an external adaptive test wire, and detects the voltage or waveform in the control circuit; and the communication port of the automobile circuit measuring box is connected, a ladder-type communication plug and a special ladder-type communication socket for spaceflight are adopted, wherein the wire inside the connecting wire harness is a silver-plated wire, so that the automobile circuit measuring box has good conductive property and low resistance property, and the accuracy of signal voltage and waveform in the measurement of the circuit can be ensured. Adopt the utility model discloses behind the product, when the auto repair technician met certain vehicle trouble, if involve when dousing the relevant electric elements trouble of certain electrical system, the maintenance technician need not pull down the relevant electric elements of electrical system from the vehicle, also need not stretch into the probe from the back of the relevant electric elements plug-in connector of electrical system and go to measure the signal voltage of relevant circuit. The automobile circuit measuring box can be directly used for measuring, the process is convenient and quick, the working efficiency of a maintenance technician is greatly improved, and the time and the economic cost are reduced; for researchers in colleges and universities or automobile research institutes, the device can conveniently measure the reference voltage of each pin on the corresponding system control unit of the vehicle in different working states. The vehicle wiring harness connector cannot be damaged by the equipment, and the equipment is convenient and quick, greatly improves the working efficiency of researchers, and reduces time and economic cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Wherein:

FIG. 1 is a circuit diagram of a keyless control system of a vehicle type in the prior art;

FIG. 2 is a schematic diagram of a PCM pin front side of a power control system of a vehicle type in the prior art;

FIG. 3 is a schematic view of the reverse side of PCM pins in a power control system of a vehicle type according to the prior art;

FIG. 4 is a schematic diagram of an exemplary circuit measurement board within the automotive circuit measurement box;

FIG. 5 is a schematic block diagram of an exemplary circuit measurement device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application. The first and second elements are both elements, but they are not the same element.

In order to solve the problems of the conventional prior art, in the embodiment, a vehicle circuit measuring device is particularly provided, which can improve the maintenance efficiency of a maintenance technician in diagnosing the vehicle electric control system and the related faults of the electric components, prolong the service life of the electric component plug connector, and avoid the damage of the related electric components, as shown in fig. 5, and the vehicle circuit measuring device comprises two parts, namely a test wire and a measuring box.

The test line comprises a first plug-in element matched with an electronic control system module ECU of the vehicle to be tested, a second plug-in element matched with an original vehicle wiring harness of the electronic control system of the vehicle to be tested, and a third plug-in element connected with the measurement box as a first wiring harness and a second wiring harness of the connection terminal, wherein the first plug-in element is connected with the second plug-in element through the first wiring harness, and the third plug-in element is connected with the second plug-in element through the second wiring harness; in some specific embodiments, the test line comprises five parts, wherein the first part is a first plug-in element matched with an electronic control system (ECU) of a vehicle, and the ECU is a male plug-in connector, so that a female-end plug-in element matched with the ECU of an electronic control system of a related vehicle type is arranged; the second part is a second plug-in component matched with an original vehicle wiring harness of the vehicle electronic control system, and a male-end plug-in component matched with the original vehicle wiring harness of the electric control system of the related vehicle type is arranged because the original vehicle wiring harness of the vehicle electronic control system is connected with the ECU end through the female plug-in connector; the third part is a third plug-in element connected with the measuring box, namely a ladder-shaped male plug-in connector, because the measuring box terminal is arranged as a ladder-shaped female plug-in connector; the fourth part and the fifth part are both a first wire harness and a second wire harness, and the first wire harness and the second wire harness are used for connecting the connector end with the three sub-plug-in elements so as to transmit voltage or current of power supply, grounding, network and signals of the original vehicle. Furthermore, the test line can be specifically designed according to the shapes of the plugs of the electronic control system modules of different vehicles, and when different electronic control systems are used, an adaptive test line matched with the electronic control system is selected for measurement, which is not specifically limited in this example. The female connector of the first part matched with the ECU of the vehicle electronic control system module is connected with the male connector of the second part matched with the original vehicle wiring harness of the vehicle electronic control system through a first wiring harness, and one-to-one pins and wires are connected inside the female connector; the ladder-shaped male connector of the third part connected with the measuring box is connected with the male connector of the second part matched with the original vehicle wiring harness of the vehicle electronic control system through a second wiring harness, and one-to-one pins and wires are connected inside the male connector; in the male connector of the second part, which is matched with the original vehicle wiring harness of the vehicle electronic control system, each stitch between the two bundles of wires has a hinge point at the position, and the two wiring harnesses are in parallel connection, namely the hinge point is arranged at the position where the second plug-in element is connected with the original vehicle wiring harness of the vehicle electronic control system to be tested, so that the two wiring harnesses are connected in parallel. The working principle and the working mode of the test line are as follows: the test line is used for connecting the automobile circuit measuring box into a corresponding control circuit of an electric control system of a vehicle to be measured so as to facilitate a maintenance technician to measure from the measuring box; the wiring harness of the original vehicle is supplied with power and communicated with an ECU of a vehicle electronic control system through the first wiring harness, signals are acquired at the hinged point inside a male connector matched with the wiring harness of the original vehicle of the vehicle electronic control system on the second part, the signals are transmitted to a trapezoidal female connector of the measuring box through the second wiring harness, and finally the signals are transmitted into a circuit board inside the measuring box through a T-shaped male connector on the measuring box.

The measuring box comprises a shell and a measuring circuit structure arranged in the shell. Wherein, in some specific embodiments, the measurement circuit structure comprises a communication socket and a measurement circuit board; the communication socket is a ladder-shaped communication socket, the measuring circuit board is connected to a corresponding adaptive test line of a corresponding electronic control system ECU of a vehicle to be tested through the ladder-shaped communication socket, in some specific embodiments, a supporting point is arranged inside the shell to fix the communication socket and the measuring circuit board so as to ensure good fixation between the two parts and no gap, the service life of the measuring box is prolonged, and a connecting wire harness lead inside the plug-in element is a silver-plated lead. The working principle and the working mode of the measuring box are as follows: the measuring circuit board is connected to a corresponding adaptive test line of an ECU of a corresponding electric control system of the vehicle through a ladder-shaped communication socket, signals are obtained through the hinged point and then transmitted to the measuring circuit board in the measuring box through a wire harness, the measuring circuit board is equivalent to a deconcentrator, the circuits are in parallel connection and are not influenced mutually and are distributed to signal measuring points on a shell of the measuring box, and therefore signal measurement of the electric control system corresponding to the vehicle by a maintenance technician or a tester is greatly facilitated.

In summary, the automobile circuit measuring device detects the voltage value of the circuit by a parallel circuit method, and is safe, reliable, accurate, convenient and quick. Great convenience is maintained master detection circuit trouble, has improved work efficiency, avoids circuit system's connector because dismantle the damage. Meanwhile, when teachers in schools teach students, the circuit faults can be visually detected, the students can conveniently operate the circuit, and the circuit is safe and reliable.

The following describes the use method of the automobile circuit measuring box by taking the measurement of the reference voltage of the power system control module as an example:

first, the vehicle ignition switch is turned off, and the negative electrode of the battery is removed.

Secondly, selecting an adaptive test line of a PCM (pulse code modulation) of a control module required by the automobile circuit, pulling down and disconnecting a plug connector of the control module required to be tested, inserting a female plug of the adaptive test line of the automobile circuit measuring box into a male plug of the PCM of the automobile control module, then inserting a male plug of the adaptive test line of the automobile circuit measuring box into a PCM female plug of the original automobile of the power control system, and finally inserting a trapezoidal measuring plug of the adaptive line into the automobile circuit measuring box.

And thirdly, assembling the negative electrode of the vehicle storage battery, and turning on the ignition switch of the vehicle.

Selecting corresponding measuring tools, such as: the multifunctional multimeter or the oscilloscope is started to adjust corresponding measuring gears, a black meter pen of the measuring equipment is inserted into the grounding end of the test hole of the automobile circuit measuring box, and finally a red meter pen is inserted into the test hole to be measured, so that the corresponding data of the automobile electric control system can be measured.

Use the device after, when the auto repair technician met a certain vehicle trouble, if when involving the relevant electric elements of electrical system, the maintenance technician need not pull down the relevant electric elements of electrical system from the vehicle, also need not stretch into the probe from the back of the relevant electric elements plug-in connector of electrical system and go to measure the signal voltage of relevant circuit. The automobile circuit measuring box can be directly used for measuring, the process is convenient and quick, the working efficiency of a maintenance technician is greatly improved, and the time and the economic cost are reduced; for researchers in colleges and universities or automobile research institutes, the device can conveniently measure the reference voltage of each pin on the corresponding system control unit of the vehicle in different working states. The utility model discloses can not destroy vehicle pencil connector, convenient and fast has improved researcher's work efficiency moreover greatly, has reduced time and economic cost.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an automobile circuit measuring device, its includes test wire and measurement box two parts, its characterized in that: the test line comprises a first plug-in element matched with an electronic control system module ECU of the vehicle to be tested, a second plug-in element matched with an original vehicle wiring harness of the electronic control system of the vehicle to be tested, and a third plug-in element connected with the measurement box as a first wiring harness and a second wiring harness of the connection terminal, wherein the first plug-in element is connected with the second plug-in element through the first wiring harness, and the third plug-in element is connected with the second plug-in element through the second wiring harness; the measuring box comprises a shell and a measuring circuit structure arranged in the shell; the measuring circuit structure comprises a communication socket and a measuring circuit board; the communication socket is a ladder-shaped communication socket, and the measuring circuit board is connected to a corresponding adaptive test line of a corresponding electronic control system ECU of the vehicle to be tested through the ladder-shaped communication socket; and a hinge point is arranged at the connecting part of the second plug-in element and the original vehicle wire harness of the electronic control system of the vehicle to be tested so as to enable the two wire harnesses to be connected in parallel.

2. The device of claim 1, wherein the housing is internally provided with support points to secure the communication jack and the measurement circuit board.

3. The apparatus of claim 1, further comprising: the connecting wire harness lead inside the plug-in element is a silver-plated lead.