CN112505524A - Multichannel FPC testing arrangement - Google Patents
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- CN112505524A CN112505524A CN202011330898.0A CN202011330898A CN112505524A CN 112505524 A CN112505524 A CN 112505524A CN 202011330898 A CN202011330898 A CN 202011330898A CN 112505524 A CN112505524 A CN 112505524A
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- 238000012360 testing method Methods 0.000 title claims abstract description 118
- 238000001514 detection method Methods 0.000 claims abstract description 19
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- 238000013101 initial test Methods 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
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Abstract
The invention relates to the technical field of a multi-path FPC testing device, in particular to a multi-path FPC testing device which is simple to operate, accurate and clear in testing result and capable of quickly and accurately judging defective product problem points; not only supports the simultaneous testing of multiple paths of FPCs with the same style, but also supports the simultaneous detection of multiple paths of FPCs with different functions. And the detection of the FPCs of different styles are mutually independent, and detection personnel can conveniently and quickly detect whether the produced FPC is a good product or not and can quickly and accurately locate the problem point of a defective product only by performing different test operations on different FPCs.
Description
Technical Field
The invention relates to the technical field of a multi-channel FPC testing device, in particular to a hardware circuit design for checking basic functions and judging defective points of FPCs (flexible printed circuits) containing functional modules, such as a Sensor, an MIC (microphone) and the like.
Background
With the development of electronic devices, the functions of products are more and more complex, but the structural space of the products is smaller and smaller, and the board distribution area of the main board is also smaller and smaller. Further, many devices, such as IMU, Light Sensor, Proximity Sensor, MIC, etc., have special requirements for the placement position and orientation of components and for EMI performance, and thus the demand for various FPC boards has been increasing. However, as the size of the device package is becoming smaller, the process requirements for the FPC production equipment are also becoming higher and higher. How to realize high-efficiency mass production is a problem to be solved by each manufacturer. One of the most critical problems to be solved in high-efficiency production is how to quickly, simply and accurately test whether the produced product is a good product. Therefore, it is necessary to develop a testing device for FPC, which is simple in operation, accurate and clear in testing result, and can quickly determine defective product problem points.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the FPC testing device which is simple to operate, accurate and clear in testing result and capable of rapidly and accurately judging defective product problem points is developed.
The invention relates to a multi-path FPC testing device, which comprises a Sensor testing device, a three-in-one IMU _ FPC testing device, a Light & Proximaty _ FPC testing device and an MICFPC testing device, wherein the Sensor testing device is used for expanding three or more paths of testing interfaces so as to realize an efficient testing mode, the three-in-one IMU _ FPC testing device checks whether an FPC is installed well through an initialization mode, the Light & Proximaty _ FPC testing device automatically detects whether the FPC is good, the MICFPC testing device tests the FPC through an MIC driving circuit and an indicating circuit, the FPC with multiple paths of different functions can be simultaneously detected, and the detection of the FPCs with different styles is mutually independent.
According to the multi-channel FPC testing device, most sensors on the market adopt I2C or SPI communication protocols, so that MCU containing multi-channel SPI and I2C protocol channels is selected by the testing device, different types of FPCs in the same channel use SPI interfaces of the same channel I2C or different channels according to requirements, and different channels use different channels of interfaces, when multiple sensors use the same I2C channel, different device communication addresses are used for distinguishing, and three or even more channels of testing interfaces can be expanded by adopting the mode, so that an efficient testing mode is realized.
According to the multi-channel FPC testing device, the three-in-one IMU _ FPC testing device checks whether the FPC is installed or not in an initialization mode, because initialization operations of different sensors are mutually independent, which Sensor fails to be initialized can be indicated in a red light lighting mode when the initialization fails, after the initialization succeeds, the testing device automatically sets a plurality of expected values for the sensors, and starts to read actual values of the sensors and compares the actual values with the expected values.
In the multi-path FPC testing device, Light & Proximaty _ FPC testing device, after the FPC is installed, the testing equipment is electrified, the testing device can automatically detect whether the FPC is good, after the initialization fails, the indicating lamp of the corresponding module can normally Light a red Light, and if the red Light does not Light, the initialization succeeds.
According to the multi-path FPC testing device, the MIC FPC is detected as a relatively independent module, and the multi-path FPC testing device mainly comprises an MIC driving circuit and an indicating circuit.
The technical scheme adopted by the invention is as follows: the testing device mainly comprises a power supply module, an MCU module, a multi-path FPC interface module and a multi-path testing result indicating module. All the modules are connected with each other through the MCU module.
Drawings
FIG. 1 is an overall frame diagram of a multi-way FPC testing apparatus;
FIG. 2 is an internal connection diagram of the multi-way FPC testing apparatus;
FIG. 3 is a schematic diagram of the detection principle and operation of a three-in-one IMU FPC;
FIG. 4 is a Light & Proximaty _ FPC detection principle and operation;
fig. 5 is a schematic diagram of MIC detection.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings and examples, which are provided for illustration of the present invention and are not intended to limit the scope of the present invention.
The invention relates to a multi-path FPC testing device, which comprises a Sensor testing device, a three-in-one IMU _ FPC testing device, a Light & Proximaty _ FPC testing device and an MICFPC testing device, wherein the Sensor testing device is used for expanding three or more paths of testing interfaces so as to realize an efficient testing mode, the three-in-one IMU _ FPC testing device checks whether an FPC is installed well through an initialization mode, the Light & Proximaty _ FPC testing device automatically detects whether the FPC is good, the MICFPC testing device tests the FPC through an MIC driving circuit and an indicating circuit, the FPC with multiple paths of different functions can be simultaneously detected, and the detection of the FPCs with different styles is mutually independent.
The invention relates to a multi-path FPC testing device, which not only supports the simultaneous testing of a plurality of paths of FPCs with the same style, but also supports the simultaneous multi-path detection of FPCs with a plurality of different functions, the detection of the FPCs with different styles is mutually independent, a detector can conveniently and quickly detect whether the produced FPCs are good products or not and can quickly and accurately position defective products only by carrying out different testing operations on different FPCs, because most sensors on the market adopt I2C or SPI communication protocols, the testing device selects an MCU containing a plurality of paths of SPI and I2C protocol channels, as shown in figure two, the testing device adopts an internal connection mode of the multi-path testing device, different types of FPCs in the same path use the same channel I2C or SPI interfaces of different channels according to requirements, the interfaces of different channels are selected among different paths, when a plurality of sensors use the same I2C channel, different equipment communication addresses can be used for distinguishing, by adopting the method, 3 or even more paths of test interfaces can be expanded to realize an efficient test mode.
The invention relates to a multi-path FPC testing device, which not only supports the simultaneous testing of a plurality of paths of FPCs with the same style, but also supports the simultaneous multi-path testing of FPCs with a plurality of different functions, the detection of the FPCs with different styles is mutually independent, a tester only needs to carry out different testing operations on different FPCs, whether the produced FPC is good or not can be conveniently and quickly detected, and the problem point of the defective product can be quickly and accurately positioned, the flow of the multi-path FPC testing device for testing three-in-one IMU _ FPC (gyroscope, acceleration Sensor and geomagnetic Sensor) is shown in the following figure III, after the tester installs the FPC to be tested, the tester powers on the testing device, the testing device checks whether the FPC is installed or not by an initialization mode, because the initialization operations of different sensors are mutually independent, which Sensor initial test fails can be indicated by a red light mode when the initialization fails, after initialization is successful, the testing device automatically sets a plurality of expected values for the sensors, the actual values of the sensors are read and compared with the expected values, the FPC needs to be shaken in different directions of up, down, left and right by a tester when the IMU _ FPC tests, when the values of the sensors reach the expected values, corresponding indicator lights are displayed in green to identify that the related sensors pass the test, otherwise, the indicator lights corresponding to the corresponding sensors are displayed in yellow to identify that the actual values of the sensors cannot reach the expected values, the FPC is poor, the tester can judge whether the FPC is qualified or not through the states of the indicator lights, and when the FPC is found to be poor, the tester only needs to quickly judge the reasons of the failure according to the colors (yellow and red) of the indicator lights.
The invention relates to a multi-path FPC testing device, which not only supports the simultaneous testing of a plurality of paths of FPCs with the same style, but also supports the simultaneous multi-path detection of FPCs with a plurality of different functions, the detection of the FPCs with different styles is mutually independent, a tester only needs to carry out different testing operations on different FPCs, whether the produced FPC is good or not can be conveniently and rapidly detected, the problem point of the defective product can also be rapidly and accurately positioned, the testing device can automatically detect whether the FPC is good or not like an IMU _ FPC testing method, for example, the Light & Proximaty _ FPC testing flow and the testing principle are shown in the figure, the testing device is electrified after the FPC is installed, the testing device can automatically detect whether the FPC is good or not, when the initial testing fails, the indicating lamp of a corresponding module can normally Light a red Light, if no red Light is lighted, the initial testing success is shown, the tester only needs to carry out corresponding operations, for example, a sensor is approached by a flashlight, then according to the color change of the indicator light, the FPC is good, and if the FPC is not good, the problem can be judged by the color of the indicator light.
The multi-path FPC testing device and the multi-path FPC testing device not only support the simultaneous testing of a plurality of paths of FPCs with the same style, but also support the simultaneous multi-path detection of the FPCs with various different functions, and the detection of the FPCs with different styles is mutually independent, so that a detector can conveniently and quickly detect whether the produced FPCs are good products or not and can quickly and accurately position defective products only by performing different testing operations on the different FPCs.
The invention relates to a multi-path FPC testing device, which not only supports the simultaneous testing of a plurality of paths of FPCs with the same style, but also supports the simultaneous multi-path testing of FPCs with a plurality of different functions, the detection of the FPCs with different styles is mutually independent, a tester only needs to carry out different testing operations on different FPCs to conveniently and quickly detect whether the produced FPC is good, the problem point of the defective product can be quickly and accurately positioned, the MIC FPC is detected as a relatively independent module which mainly comprises an MIC driving circuit and an indicating circuit, after the MIC FPC is installed, the tester needs to play a specific sound signal against the MIC, the brightness of an MIC _ FPC indicating lamp can be continuously changed along with the volume of the sound signal, the principle diagram of a driving part is shown in the fifth figure, the sound signal output by the MIC passes through a two-stage amplifier consisting of triodes to obtain an amplified sound signal, the LED lamp is directly driven by a triode after a cathode signal is filtered by a diode, the intensity of a sound signal is used for controlling the magnitude of the driving current of the LED by utilizing the amplification effect of the triode, and the larger the sound is, the higher the driving current of the LED is, and the brighter the lamp is in a certain range; otherwise, the darker the lamp, the better the MIC _ FPC can be judged by the tester according to the change of the brightness of the indicator lamp.
The installation mode, the connection mode or the arrangement mode of the multi-path FPC testing device are common mechanical modes, and the multi-path FPC testing device can be implemented as long as the beneficial effects of the multi-path FPC testing device can be achieved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a multichannel FPC testing arrangement, a serial communication port, including the Sensor testing arrangement, trinity IMU _ FPC testing arrangement, Light & promimity _ FPC testing arrangement and MICFPC testing arrangement, the Sensor testing arrangement is used for expanding three routes even more multichannel test interface, with the realization efficient test mode, trinity IMU _ FPC testing arrangement inspects FPC through the mode of initialization whether to install, Light & promimity _ FPC testing arrangement automated inspection FPC is the yields, MICFPC testing arrangement tests FPC through MIC drive circuit and indicating circuit, support the FPC of the multiple different functions of multichannel detection simultaneously, and the detection of different style FPCs is mutually independent.
2. The utility model provides a multichannel FPC testing arrangement, its characterized in that, wherein Sensor testing arrangement is the FPC of different grade type in the same way, uses the SPI interface of same passageway I2C or different passageways as required, selects the interface of different passageways to choose between the different ways, when multiple Sensor used same I2C passageway, then can use different equipment communication address to be used for distinguishing, adopt this kind of mode can expand three routes even more multichannel test interface to realize efficient test mode.
3. The multi-channel FPC testing device of claim 1, wherein the three-in-one IMU _ FPC testing device checks whether the FPC is installed by initialization, initialization operations of different sensors are independent of each other, a failure of initialization of a Sensor can be indicated by means of a red light when the initialization fails, the testing device automatically sets a plurality of expected values for the Sensor after the initialization succeeds, and starts to read actual values of the Sensor and compare the actual values with the expected values.
4. The multi-channel FPC testing device of claim 1, wherein in the Light & Proximaty _ FPC testing device, after the FPC is installed, the testing device is powered on, the testing device can automatically detect whether the FPC is good, after the initialization fails, the indicating lamp of the corresponding module can normally Light a red Light, and if no red Light is lighted, the initialization is successful.
5. The multi-channel FPC testing device of claim 1, wherein the detection of the MICFPC testing device is a relatively independent module mainly comprising an MIC driving circuit and an indicating circuit.
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| CN202011330898.0A CN112505524A (en) | 2020-11-24 | 2020-11-24 | Multichannel FPC testing arrangement |
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2020
- 2020-11-24 CN CN202011330898.0A patent/CN112505524A/en active Pending
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