Wire harness position detection structure

Abstract

The utility model discloses a wire harness position detection structure, which is used for measuring the position of a terminal on a connector shell and comprises an electric measuring head, an inductance sensor, an inductance digital converter and an MCU (Microprogrammed Control Unit), the electric measuring head can be positioned with the connector shell; the inductance sensor is fixedly arranged on the electric measuring head, corresponds to a preset position of a terminal on the connector shell, and is used for generating an inductance signal according to the approaching distance of the terminal; the inductance-to-digital converter is provided with an inductance signal input port and a digital signal output port, and the inductance signal input port is electrically connected with the inductance sensor so as to receive an inductance signal generated by the inductance sensor; the MCU is electrically connected to the digital signal output port of the inductance-to-digital converter so as to receive a digital signal generated after the inductance signal is converted by the inductance-to-digital converter. The utility model provides a structure capable of conveniently measuring the deviation value of the terminal on the connector housing.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wire harness detection device technical field, especially in a kind of wire harness position detection structure. BACKGROUND

[0002] In the field of wire harness connector, connector shell (usually called "Housing" in the art) is generally used to fix terminal (usually called "Header" in the art), in order to detect whether terminal is installed in place on connector shell, current generally needs to carry out conduction test, i.e. connector shell is inserted on the electrical probe matched with it, probe is provided on the electrical probe corresponding each terminal, whether terminal is installed in place on connector shell is judged by whether probe is in good contact with terminal, i.e. whether circuit can be conducted, but the actual position deviation of terminal position cannot be measured by the foregoing conduction test, and the assembly quality of terminal on connector shell is still difficult to guarantee.

[0003] How to design a structure capable of conveniently measuring the terminal position deviation value on connector shell is urgently solved in the art. INVENTION CONTENTS

[0004] The utility model aims at providing a kind of wire harness position detection structure, and the technical problem solved is how to provide a structure capable of conveniently measuring the terminal position deviation value on connector shell.

[0005] To achieve the above-mentioned purpose, the solution of the utility model is: a kind of wire harness position detection structure, for measuring the terminal position on connector shell, including electrical probe, inductive sensor, inductive digital converter and MCU;

[0006] Electrical probe can be positioned with connector shell;

[0007] Inductive sensor is installed and fixed on electrical probe, and corresponds to the preset position of terminal on connector shell, and inductive sensor is used to generate inductive signal according to the approach distance of terminal;

[0008] Inductive digital converter has inductive signal input port and digital signal output port, and inductive signal input port is electrically connected with inductive sensor to receive inductive signal generated by inductive sensor;

[0009] MCU is electrically connected to the digital signal output port of inductive digital converter to receive digital signal generated by inductive digital converter after inductive signal conversion.

[0010] Further, the MCU is provided with communication interface, and external computer communication is connected to the communication interface of MCU, and MCU can at least convert the digital signal transmitted by inductive digital converter into readable signal of external computer.

[0011] Further, the inductance signal input port of the inductance digital converter is electrically connected with a plurality of analog switches, each pair of analog switches is electrically connected with one inductance sensor, and the analog switches are used to switch one of the inductance sensors to be electrically connected to the inductance signal input port of the inductance digital converter.

[0012] Further, a plurality of inductance digital converters are provided, each of which is electrically connected with a plurality of inductance sensors, and the plurality of inductance digital converters are connected to the MCU through respective I2C ports, thereby forming a detection unit composed of the electric probe, the inductance sensor, the inductance digital converter and the MCU.

[0013] Further, a plurality of detection units are cascaded to form a detection matrix, and the detection units in the detection matrix are communicated through CAN or 485 or SPI, and finally communicated to an external computer.

[0014] Further, the inductance sensor comprises an inductance coil and a contact, the contact is used to abut against a terminal on the connector shell to generate displacement, the contact is connected with a magnetic conductor, the magnetic conductor is inserted into the inductance coil, and the inductance coil generates inductance signal change with the displacement of the contact.

[0015] Further, on the electric probe, one inductance sensor is provided corresponding to each terminal on the connector shell.

[0016] Further, the inductance digital converter is LDC1614RGHR produced by Texas Instruments.

[0017] Further, the LDC1614RGHR has IN0A and IN0B, IN1A and IN1B, IN2A and IN2B, IN3A and IN3B, four pairs of input pins, which are respectively used as the inductance signal input port, and also has I2C pin, which is used as the digital signal output port.

[0018] Further, the shape of the electric probe can be plugged with the connector shell to be positioned after plugging.

[0019] The inductance sensor is installed and fixed on the electric probe, the electric probe can be positioned with the connector shell, after positioning, the inductance sensor on the electric probe corresponds to the preset position of the terminal on the connector shell, the inductance sensor is used for generating an inductance signal according to the approaching distance of the terminal, and then the inductance sensor generates different inductance signals according to the actual positions of the terminals on the connector shell, the inductance digital converter has an inductance signal input port and a digital signal output port, the inductance signal input port is electrically connected with the inductance sensor to receive the inductance signal generated by the inductance sensor, the MCU is electrically connected to the digital signal output port of the inductance digital converter to receive the digital signal generated by the inductance digital converter after converting the inductance signal, and then the actual deviation of the terminal position can be known by reading the digital signal. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a wiring diagram of the inductance digital converter in the utility model;

[0021] Figure 2 It is a schematic view of the inductance signal input port of the inductance digital converter in the utility model connecting an analog switch;

[0022] Figure 3 It is a schematic view of the inductance digital converter in the utility model cascading;

[0023] Figure 4 It is a schematic view of the inductance digital converter in the utility model connecting an external computer through an MCU;

[0024] Figure 5 It is a preferred structure schematic view of an inductance sensor.

[0025] Label explanation: 1-inductance sensor interface, 2-inductance digital converter, 3-MCU, 4-external computer, 5-terminal, 6-analog switch, 7-inductance coil, 8-contact, 9-magnetic conductor. DETAILED DESCRIPTION

[0026] The utility model will be described in detail in combination with the drawings and specific embodiments.

[0027] The embodiments of the utility model will be described below in detail with reference to the drawings, and it should be explained that the utility model can be implemented in different forms, is not limited to the embodiments explained herein, and the provision of these embodiments aims at making the present disclosure thorough and complete, and conveying the scope of the utility model to the person skilled in the art completely.

[0028] A wire harness position detection structure, such as Figures 1-5As shown, for measuring the position of the terminal 5 on the connector housing, including an electrical probe, an inductance sensor, an inductance digital converter 2 and an MCU 3;

[0029] The specific shape of the electrical probe and the connector housing is not limited, and the connector housing can be any existing connector housing. The electrical probe can be positioned with the connector housing according to actual needs. The positioning here refers to making the two in a predetermined relative position. The specific way of positioning is not limited, for example, a jig can be provided to make the two fixed in the fixed position on the jig, thereby positioning the two. Alternatively, the shape of the electrical probe can be inserted into the connector housing to position after insertion.

[0030] The inductance sensor is mounted and fixed on the electrical probe, and the position of the inductance sensor on the electrical probe satisfies that the inductance sensor corresponds to the preset position of the terminal 5 on the connector housing after the electrical probe is positioned with the connector housing. The inductance sensor is used to generate an inductance signal according to the proximity of the terminal 5. The preferred structure of the inductance sensor is given later. In the embodiment, one inductance sensor is provided on the electrical probe corresponding to each terminal 5 on the connector housing. Of course, the inductance sensor can be partially provided only for part of the terminals to be detected, which is not specifically limited.

[0031] The inductance digital converter 2 has an inductance signal input port and a digital signal output port. The inductance digital converter 2 is a commonly known electrical element in the art, which can convert the inductance signal input by the inductance signal input port into a digital signal and output it through the digital signal output port. The inductance signal input port is electrically connected to the inductance sensor. In the embodiment, the inductance sensor is connected to the inductance sensor interface 1, so that the inductance digital converter 2 receives the inductance signal generated by the inductance sensor. The MCU 3 is electrically connected to the digital signal output port of the inductance digital converter 2 to receive the digital signal generated by the inductance digital converter 2 after converting the inductance signal. Preferably, the MCU 3 is provided with a communication interface, and the external computer 4 is communicatively connected to the communication interface of the MCU 3. The MCU 3 can at least convert the digital signal received from the inductance digital converter 2 into a readable signal of the external computer 4, so that the actual deviation value of the terminal position can be read and viewed through the external computer 4. Specifically, any communication means between the existing MCU and the external computer can be used to achieve this, which is a conventional technical means in the art and will not be described in detail in the embodiment.

[0032] In order to be used in the scene where the number of terminals to be measured is large, the following two more preferred embodiments are provided. One preferred embodiment is as follows: each inductance signal input port of the inductance digital converter 2 is respectively electrically connected with an analog switch 6, the analog switch 6 is a conventional electrical element in the art, and is electrically connected with the MCU, and switches the circuit under the control of the MCU. By electrically connecting each pair of analog switches 6 with an inductance sensor, the analog switch 6 is used to switch one of the inductance sensors to be electrically connected to the inductance signal input port of the inductance digital converter 2, so that each inductance signal input port of the inductance digital converter 2 can be connected with multiple inductance sensors, and the measurement of a larger number of terminals can be realized without adding the inductance digital converter 2. Another preferred embodiment is as follows: the inductance digital converter 2 is provided with multiple inductance digital converters 2, each of which is respectively electrically connected with an inductance sensor, and the multiple inductance digital converters 2 are connected to the MCU 3 through respective I2C ports, and then an electrical probe, an inductance sensor, an inductance digital converter 2 and an MCU 3 form a detection unit, multiple detection units are cascaded to form a detection matrix, the detection units in the detection matrix are communicated through CAN or 485 or SPI, and are finally communicated to an external computer 4. Cascading is a commonly used connection method in the art, that is, the data is sequentially transmitted between multiple inductance digital converters 2, so that all test data can be received by one external computer. Of course, the two preferred modes can be used at the same time, that is, the detection unit also includes an analog switch 6, so as to realize the measurement of the maximum number of terminals at a smaller cost.

[0033] In the preferred embodiment, the inductance sensor is mainly combined with Figure 5 As shown in the figure, the inductance sensor includes an inductance coil 7 and a contact 8, the contact 8 is used to abut against the terminal on the connector shell to generate displacement, the contact 8 is connected with a magnetic conductor 9, the magnetic conductor 9 is inserted into the inductance coil 7, in this embodiment, the contact 8 and the magnetic conductor 9 are fixedly connected, of course, other transmission connection modes can also be used, as long as the magnetic conductor 9 can displace with the contact 8 to make the inductance coil 7 generate an inductance signal, and then according to the actual position of the terminal, the contact 8 generates displacement of different distances, and then drives the magnetic conductor 9 to generate displacement of different distances in the inductance coil 7, and then generates different inductance signals. One inductance sensor is only used to measure the deviation of one terminal in one direction. If a terminal needs to measure the deviation in multiple directions, multiple inductance sensors need to be correspondingly arranged.

[0034] Preferably, in order to make the inductance signal transmitted to the inductance digital converter 2 more accurate, the inductance digital converter 2 has a differential input pin, and the inductance sensor is electrically connected to the differential input pin.

[0035] Specifically in the present embodiment set, the inductance digital converter 2 model is LDC1614RGHR produced by Texas Instruments, has IN0A and IN0B, IN1A and IN1B, IN2A and IN2B, IN3A and IN3B, four pairs of input pins, as the inductance signal input port respectively, also has I2C pin, as the digital signal output port.

[0036] The above only is the preferred embodiment of the utility model, and does not limit the design of the present application, and all equivalent changes made according to the key design of the present application fall within the protection scope of the present application.

Claims

1. A harness position detection structure for measuring a position of a terminal (5) on a connector housing, characterized by: The electric probe, the inductance sensor, the inductance digital converter (2) and the MCU (3); The electric probe can be positioned with the connector shell; The inductance sensor is fixed on the electric probe and corresponds to the preset position of the terminal on the connector shell, and the inductance sensor is used to generate an inductance signal according to the approaching distance of the terminal (5); The inductance digital converter (2) has an inductance signal input port and a digital signal output port, and the inductance signal input port is electrically connected to the inductance sensor to receive the inductance signal generated by the inductance sensor; The MCU (3) is electrically connected to the digital signal output port of the inductance digital converter (2) to receive the digital signal generated by the inductance digital converter (2) after converting the inductance signal.

2. The harness position detecting structure according to claim 1, wherein The MCU (3) is provided with a communication interface, and the external computer (4) is communicatively connected to the communication interface of the MCU (3), and the MCU (3) can at least convert the digital signal received from the inductance digital converter (2) into a readable signal of the external computer (4).

3. The harness position detecting structure according to claim 2, wherein The inductance signal input port of the inductance digital converter (2) is electrically connected to a plurality of analog switches (6), each pair of analog switches (6) is electrically connected to one inductance sensor, and the analog switch (6) is used to switch one of the inductance sensors to be electrically connected to the inductance signal input port of the inductance digital converter (2).

4. The harness position detecting structure according to claim 2 or 3, characterized in that: The inductance digital converter (2) is provided with a plurality of inductance sensors, and each inductance digital converter (2) is electrically connected to a plurality of inductance sensors, and the plurality of inductance digital converters (2) are connected to the MCU (3) through respective I2C ports, thereby forming a detection unit composed of the electric probe, the inductance sensor, the inductance digital converter (2) and the MCU (3).

5. The harness position detecting structure according to claim 4, wherein: A plurality of detection units are cascaded to form a detection matrix, and the detection units of the detection matrix are communicated through CAN or 485 or SPI, and finally communicated to an external computer (4).

6. The harness position detecting structure according to claim 1, wherein The inductance sensor comprises an inductance coil (7) and a contact (8), the contact (8) is used to abut against the terminal on the connector shell to generate displacement, the contact (8) is connected to a magnetic conductor (9), the magnetic conductor (9) is inserted into the inductance coil (7) and makes the inductance coil (7) generate inductance signal change with the displacement of the contact (8).

7. The harness position detecting structure according to claim 1, wherein On the electric probe, a corresponding inductance sensor is provided for each terminal (5) on the connector shell.

8. The harness position detecting structure according to claim 1, wherein The inductance digital converter (2) is a LDC1614RGHR produced by Texas Instruments.

9. The harness position detecting structure according to claim 8, wherein: The LDC1614RGHR has IN0A and IN0B, IN1A and IN1B, IN2A and IN2B, IN3A and IN3B, four pairs of input pins, which are used as the inductance signal input port, and also has I2C pins, which are used as the digital signal output port.

10. The harness position detecting structure according to claim 1, wherein The shape of the electric probe can be inserted with the connector shell to be positioned after insertion.

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