CN-122017664-A - LED car lamp testing method with line sequence recognition and tester

CN122017664ACN 122017664 ACN122017664 ACN 122017664ACN-122017664-A

Abstract

The application relates to an LED car lamp testing method with line sequence identification, which comprises the following steps of S1, configuring a testing link, S2, setting standard parameters, S3, carrying out correlation induction detection on leads of a car lamp to be tested and wiring ports of a tester, S4, testing working current of the car lamp to be tested under set voltage, comparing the working current with the standard parameters, S5, line sequence identification, carrying out detection and identification on the leads of the car lamp to be tested through a visual camera or a color sensor, S6, adjusting the standard parameters, taking average value of test data of a plurality of car lamps with good quality, defining the average value as new standard parameters, and then repeating the steps S3-S6.

Inventors

LIU CHANGGUI
Tao Jiabo
YING XINGCONG
ZHENG HAIHUA
LI YUHUA
LIANG ZHIHUA

Assignees

浙江豪钿科技有限公司
台州豪钿智能仪表有限公司

Dates

Publication Date: 20260512
Application Date: 20260410

Claims (10)

1. The LED car lamp testing method with the line sequence identification is characterized by comprising the following steps of: S1, constructing a test link, and sequentially connecting a programmable power supply, a tester and a lamp to be tested to form a loop; S2, setting standard parameters, testing the combined sample by the tester, and setting the processed test data as the standard parameters; s3, connection identification, correlation induction detection is carried out on a lead wire of the car lamp to be detected and a wiring port of the tester; S4, testing the electrical property, testing the working current of the car lamp to be tested under the set voltage, and comparing the working current with the standard parameters; s5, line sequence recognition, namely detecting and recognizing the lead wire of the car lamp to be detected through a visual camera or a color sensor; S6, standard parameters are adjusted, the average value of test data of a plurality of good car lamps is obtained, the average value is defined as a new standard parameter, and then the steps S3-S6 are repeated.
2. The method for testing the LED car lamp with line sequence identification according to claim 1, wherein in the step S1, two 0-80V programmable power supplies are configured, the first programmable power supply is used for supplying power to the car lamp to be tested for a long time, the second programmable power supply is used for outputting voltage signals to the car lamp to be tested, the normal working voltage of the car lamp to be tested is aV-bV, the second programmable power supply has a first output voltage aV and a second output voltage bV, and the second programmable power supply carries out cyclic test on the car lamp to be tested by aV and bV.
3. The method for testing the LED car lamp with line sequence identification according to claim 1, wherein in the step S1, the car lamp to be tested is integrated with a plurality of lamps, and the tester is used for synchronously detecting all the lamps and displaying detection results at the same time.
4. The method for testing the LED lamp with line sequence recognition according to claim 1, wherein in the step S2, the standard parameter is set as a set current parameter, the current value of the lamp to be tested is detected after the lamp to be tested is electrified by aV and bV, the current value is used as the standard parameter, and the follow-up tester tests the follow-up lamp to be tested by taking the set error value as an error range.
5. The method for testing the LED car lamp with line sequence identification according to claim 1, wherein in the step S3, correlation induction detection is realized through a transmitter and a receiver, the transmitter and the receiver are oppositely arranged in a wiring port of the tester, and when a lead wire of the car lamp to be tested is completely inserted into the wiring port, the receiver cannot receive a transmitting signal.
6. The method for testing the LED car lamp with the line sequence identification according to claim 1, wherein in the step S4, 50 times of testing are alternately carried out on the car lamp to be tested by aV and bV, and then the test current is compared with the standard parameters, so that the quality of the car lamp to be tested is determined.
7. The method for testing the LED car lamp with line sequence identification according to claim 1, wherein in the step S5, the vision camera photographs and reads the plugging position and then compares the plugging position with a storage diagram of a reference piece.
8. The LED car light testing method with line sequence identification according to claim 1, wherein the color sensor comprises a transmitting end and a receiving end, the transmitting end transmits a beam of white light to a car light to be tested, the light reflected by the car light to be tested enters the receiving end, and the receiving end is compared with a set value after quantization treatment.
9. The LED car lamp testing method with line sequence identification according to claim 1, wherein the steps S2-S6 comprise an overcurrent protection circuit based on the testing method, the overcurrent protection circuit is used for protecting a car lamp to be tested when current is overloaded, the circuit adopts a P-channel MOS tube series voltage stabilizing structure, and the circuit comprises a P-channel MOS tube Q1, an operational amplifier U1, a 2.5V reference voltage source ZD2, a zener diode ZD1 serving as grid protection, a current sampling resistor Rs, a divider resistor network and a filter capacitor.
10. A tester based on the testing method of any one of claims 1-9, comprising: A working platform (1); the man-machine interaction module comprises a display screen (2) and keys; the main control module comprises a singlechip, a test screen (3), a detection circuit and an alarm; An information acquisition module comprising a vision camera (4) or a color sensor, and The mechanical connection module comprises a physical interface (5), wherein the physical interface (5) is used for connecting a car lamp to be tested; The system comprises a man-machine interaction module, a main control module, an information acquisition module and a mechanical connection module, wherein the man-machine interaction module, the main control module, the information acquisition module and the mechanical connection module are all arranged on a working platform (1), the main control module is connected with the man-machine interaction module, and the information acquisition module and the mechanical connection module are both connected with the main control module; the key comprises testing with multiple voltages; the test screen (3) is used for synchronously displaying a plurality of test results; The information acquisition module further comprises a searchlight, and when the test result is abnormal, the singlechip controls the searchlight to carry out brightness adjustment and then carry out the test again; the alarm buzzes when detecting bad parts; the singlechip is used for uploading the test total number and the bad data record.

Description

LED car lamp testing method with line sequence recognition and tester Technical Field The application relates to the field of vehicle lamp detection, in particular to an LED vehicle lamp testing method with line sequence identification and a tester. Background The LED lamp is a semiconductor solid light-emitting device for directly converting electric energy into light energy, has the advantages of high efficiency, energy saving, ultra-long service life, extremely fast response, flexible design and the like, can be used as a lamp, is various in variety, often causes abnormality of LED lamp parts in the production process, such as abnormal line sequence, damage of certain elements of a PCB (printed Circuit Board), electrical abnormality caused by short circuit or open circuit of the whole circuit, or abnormality that certain connectors are not inserted in place, and the like, and can only detect one abnormality in a special way, such as electrical test on a loop formed by electrifying the LED lamp, or detection on whether line sequence is wrong or not in situ of the LED lamp by visual inspection of personnel. Chinese patent CN212932909U discloses a continuous current and voltage monitor for testing LED lamp, which is a typical single abnormality detector, and can only detect LED lamp through current and voltage, the detection mode has the following problems: 1. the misordering of the wires, such as the low beam being connected to the high beam line, the high beam being close to the light line, affects the end function, but since the operating voltages of the low beam and the high beam are the same, normal current is still obtained when the wires are detected. 2. The line sequence is wrong, for example, the low beam is connected with the low beam circuit through the line of the high beam, the high beam is connected with the high beam circuit through the line of the low beam, so that the terminal function is not affected, normal current can still be obtained when the high beam is detected, but the high beam is used as a defective product due to the line sequence requirement and the later maintenance requirement of the wire. 3. The wire sequence is misplaced and the welding is misplaced, and when the wire sequence is detected, the normal current can still be obtained. Disclosure of Invention In order to ensure the product yield of the LED car lamp, the application provides a testing method and a tester for the LED car lamp with line sequence identification. The application provides a testing method and a tester for an LED car lamp with line sequence identification, which adopts the following technical scheme: a testing method of an LED car lamp with line sequence identification comprises the following steps: S1, constructing a test link, and sequentially connecting a programmable power supply, a tester and a lamp to be tested to form a loop; S2, setting standard parameters, testing the combined sample by the tester, and setting the processed test data as the standard parameters; s3, connection identification, correlation induction detection is carried out on a lead wire of the car lamp to be detected and a wiring port of the tester; S4, testing the electrical property, testing the working current of the car lamp to be tested under the set voltage, and comparing the working current with the standard parameters; s5, line sequence recognition, namely detecting and recognizing the lead wire of the car lamp to be detected through a visual camera or a color sensor; S6, standard parameters are adjusted, the average value of test data of a plurality of good car lamps is obtained, the average value is defined as a new standard parameter, and then the steps S2-S6 are repeated. Through adopting above-mentioned technical scheme, connect discernment, electrical property test and line preface discernment three steps cooperate jointly and realize the quality testing of LED car light, and the three is supplementary each other for detecting system is more perfect, and then improves the detection efficiency of LED car light, reduces the cost of labor simultaneously. Optionally, in the step S1, two 0-80V programmable power supplies are configured, the first programmable power supply is used for supplying power to the vehicle lamp to be tested for a long time, the second programmable power supply is used for outputting voltage signals to the vehicle lamp to be tested, the normal working voltage of the vehicle lamp to be tested is aV-bV, the second programmable power supply has a first output voltage aV and a second output voltage bV, and the second programmable power supply carries out a cyclic test to the vehicle lamp to be tested with aV and bV. Through adopting above-mentioned technical scheme, the programmable power supply can provide stable voltage, on the one hand to the long power supply of LED car light, provides the detected voltage on the one hand to can also provide the voltage of settlement and carry out comprehensive