CN214585858U

CN214585858U - Lighting test switching circuit for USB camera module

Info

Publication number: CN214585858U
Application number: CN202120409121.7U
Authority: CN
Inventors: 李兴洋; 龚廷伦; 汪晓; 张斌
Original assignee: Sunwin Hubei Optoelectronic Technology Co Ltd
Current assignee: Sunwin Hubei Optoelectronic Technology Co Ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-11-02
Anticipated expiration: 2031-02-24

Abstract

The utility model relates to a USB camera module test technical field, for a light test switching circuit for USB camera module, including the CTS test box, still including surveying test panel, survey test panel and include the stabilivolt and be used for pegging graft the public seat of test of the USB camera module that awaits measuring, the public seat of test includes anodal pin, negative pole pin, DP pin and DM pin, and DP pin and DM pin are used for respectively passing through USB interface connection computer end, negative pole pin ground connection, and anodal pin is connected with the PWR power lamp pin electricity of CTS test box. The current detection pin is led out from the test box through the special test board, the test box is connected, test software is started to test, and therefore the function test of the USB module is realized. The USB module is used, various functional data testing management and control of the product are achieved, traceability of product production data is achieved, operation is simple and convenient, and defective product outflow caused by subjective judgment is effectively prevented.

Description

Lighting test switching circuit for USB camera module

Technical Field

The utility model relates to a USB camera module tests technical field, concretely relates to light test switching circuit for USB camera module.

Background

In the production process of the current USB camera module field, the biggest problem is test analysis datamation, namely test schemes such as MTF and SFR.

The USB camera module is not a single SENSOR (sensing) original MIPI/DVP signal output imaging module, but a SENSOR original MIPI/DVP signal is converted into a PC USB connection DM/DP signal output imaging module through DSP image processing, and a considerable part of power supply circuit and circuit peripheral electronic materials are included in the image conversion processing process; this makes the detection environment more stringent for the module.

The USB module test environment to be established must meet a series of conventional module functional data test control requirements such as module analysis data/digital control test, working current data/digital control test, standby current data/digital control test, recording FW version data control test, dirty spot and dirt. In the traditional USB module production test, the problem of subjective judgment exists in the USB module lighting test by using a computer camera. For producing the USB camera module, if the main function tests cannot be achieved, the product cannot achieve the acceptance of customers, and even causes the customer loss under severe conditions.

Disclosure of Invention

The utility model provides a, solved above production USB camera module functional test use the computer camera to light the technical problem that the test has subjective judgement.

The utility model provides a solve above-mentioned technical problem and provide a test switching circuit lights for USB camera module, including the CTS test box, still including surveying test panel, survey test panel including being used for pegging graft the public seat of test of the USB camera module that awaits measuring, the public seat of test includes anodal pin, negative pole pin, DP pin and DM pin are used for respectively passing through USB interface connection computer end, negative pole pin ground connection, anodal pin with the PWR power lamp pin electricity of CTS test box is connected.

Optionally, the positive pins of the test male socket include two pins, and the two positive pins are connected in series and then electrically connected with the PWR power lamp pin of the CTS test box.

Optionally, the negative electrode pins of the test male socket include two, and both the two negative electrode pins are grounded.

Optionally, the test board further includes a voltage regulator tube, and a pin of the voltage regulator tube outputting 3.3V is electrically connected to a pin of the PWR power lamp of the CTS test box.

Optionally, the positive pin of the test male socket is grounded through a protection capacitor, and the protection capacitor is formed by connecting two capacitors with capacitance values of 0.1 μ F and 10 μ F in parallel.

Optionally, a power pin of the USB interface is connected to a USB 5V input voltage, and a ground pin is grounded.

Optionally, the test board is welded to the CTS test box.

Has the advantages that: the utility model provides a light test switching circuit for USB camera module, including the CTS test box, still including surveying test panel, survey test panel and include the stabilivolt and be used for pegging graft the public seat of test of the USB camera module that awaits measuring, the public seat of test includes anodal pin, negative pole pin, DP pin and DM pin are used for respectively passing through USB interface connection computer end, negative pole pin ground connection, anodal pin with the PWR power lamp pin electricity of CTS test box is connected. The lighting test of the USB module is realized by matching the existing CTS test box and test software, the test software is developed, and the functional standard specification parameters to be tested of the module are set by using the test software setting items; the module is connected with a current detection pin led out from the test box through a special test board; the connected test box opens the test software for testing so as to realize the function test of the USB module, and the circuit can also be synchronously applied similarly to the connection of a DM/DP signal lighting module through the USB. The USB module is used, various functional data testing management and control of the product are achieved, traceability of product production data is achieved, operation is simple and convenient, and defective product outflow caused by subjective judgment is effectively prevented. The circuit can enable the yield of the produced product to be higher, and the on-line quality of the product on the client side is fully ensured.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is the utility model discloses a light test switching circuit's for USB camera module design schematic diagram.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

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. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the utility model provides a test switching circuit lights for USB camera module, including the CTS test box, still including surveying test panel, survey test panel and include the stabilivolt and be used for pegging graft the public seat of test of the USB camera module that awaits measuring, the public seat of test includes anodal pin, negative pole pin, DP pin and DM pin are used for respectively passing through USB interface connection computer end, negative pole pin ground connection, anodal pin with the PWR power lamp pin electricity of CTS test box is connected. The lighting test of the USB module is realized by matching the existing CTS test box and test software, the test software is developed, and the functional standard specification parameters to be tested of the module are set by using the test software setting items; the module is connected with a current detection pin led out from the test box through a special test board; the connected test box opens the test software for testing so as to realize the function test of the USB module, and the circuit can also be synchronously applied similarly to the connection of a DM/DP signal lighting module through the USB. The USB module is used, various functional data testing management and control of the product are achieved, traceability of product production data is achieved, operation is simple and convenient, and defective product outflow caused by subjective judgment is effectively prevented. The circuit can enable the yield of the produced product to be higher, and the on-line quality of the product on the client side is fully ensured.

Specifically, the USB camera module to be tested is plugged into the testing male socket, so that the DP terminal and the DM terminal in the USB camera module are respectively connected to the computer through the USB interface corresponding to the pin 4 and the pin 5 on the testing male socket, and the computer can send an instruction to perform corresponding testing on the USB camera module to be tested. The positive pin on the test male socket is electrically connected with the PWR power lamp pin of the CTS test box, and 3.3V/200A current is output through the CTS test box and is provided for the positive pin of the test male socket.

Optionally, the positive pins of the test male socket include two pins, and the two positive pins are connected in series and then electrically connected with the PWR power lamp pin of the CTS test box. A plurality of positive pole pins are connected in series and externally connected, so that the test risk caused by the failure of a single pin can be avoided.

Optionally, the negative electrode pins of the test male socket include two, and both the two negative electrode pins are grounded. The grounding pin of the USB camera module to be tested is fully ensured to be grounded, and the test risk caused by single pin failure can be avoided.

Optionally, the test board further includes a voltage regulator tube, and the pin outputting 3.3V of the voltage regulator tube is electrically connected with the pin of the PWR power lamp of the CTS test box. The input end of the voltage-stabilizing tube is connected with a USB 5V power supply, and one end of the voltage-stabilizing tube is connected with a 3.3V power supply and is electrically connected with a pin of a PWR power supply lamp of the CTS test box.

Optionally, the positive pin of the test male socket is grounded through a protection capacitor, and the protection capacitor is formed by connecting two capacitors with capacitance values of 0.1 μ F and 10 μ F in parallel. The surge damage to the USB camera module to be tested caused by power failure or circuit short circuit is prevented, and a certain filtering effect is achieved.

Optionally, the power pin of the USB interface is connected to a USB 5V input voltage, and the ground pin is grounded. The USB interface is directly connected with a computer, and is simple and convenient.

Optionally, the test board is welded to the CTS test box. The fixing device is welded together to form a fixed whole, and is portable and convenient.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the present invention can be smoothly implemented by those skilled in the art according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a light test switching circuit for USB camera module, includes the CTS test box, its characterized in that still includes surveys the board, surveys the board including the public seat of test that is used for pegging graft USB camera module that awaits measuring, the public seat of test includes anodal pin, negative pole pin, DP pin and DM pin are used for connecting the computer end through the USB interface respectively, negative pole pin ground connection, anodal pin with the PWR power lamp pin electricity of CTS test box is connected.

2. The lighting test switching circuit for the USB camera module according to claim 1, wherein the number of the positive pins of the test male socket is two, and the two positive pins are connected in series and then electrically connected with the PWR power lamp pin of the CTS test box.

3. The lighting test switching circuit for the USB camera module according to claim 1, wherein the number of the negative pins of the test male socket is two, and both of the negative pins are grounded.

4. The lighting test switching circuit for the USB camera module according to claim 1, wherein the test board further comprises a voltage regulator tube, and the voltage regulator tube outputs 3.3V pin to be electrically connected with PWR power lamp pin of the CTS test box.

5. The lighting test switching circuit for the USB camera module according to claim 1, wherein the positive pin of the test male socket is grounded through a protection capacitor, and the protection capacitor is formed by connecting two capacitors with capacitance values of 0.1 μ F and 10 μ F in parallel.

6. The lighting test switching circuit for the USB camera module according to claim 1, wherein the power pin of the USB interface is connected to the USB 5V input voltage, and the ground pin is connected to ground.

7. The lighting test switching circuit for a USB camera module according to claim 1, wherein the test board is welded to the CTS test box.