CN210119549U - LED lamp automatic identification system applied to production line - Google Patents
LED lamp automatic identification system applied to production line Download PDFInfo
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- CN210119549U CN210119549U CN201920424844.7U CN201920424844U CN210119549U CN 210119549 U CN210119549 U CN 210119549U CN 201920424844 U CN201920424844 U CN 201920424844U CN 210119549 U CN210119549 U CN 210119549U
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Abstract
The utility model discloses a be applied to LED lamp automatic identification system of production line for the state of the paster LED lamp on the PCB board that automatic identification awaits measuring is surveyed the light signal conversion that the board sent the paster LED lamp through bleeder circuit and is voltage data, and rethread test PC analysis voltage data reachs the state of paster LED lamp. The utility model discloses replaced the identification method that the people's eye observed, can effectively improve the discernment accuracy, greatly avoided the risk that the discernment mistake produced, improved efficiency of software testing simultaneously, reduced the test cost.
Description
Technical Field
The utility model relates to an automatic identification technical field, concretely relates to be applied to LED lamp automatic identification system of production line.
Background
In the production process of a PCB (printed circuit board) assembly line, finished product testing is required to be carried out on a final product, wherein a link for testing whether the SMD LED lamps on the PCB operate normally exists, at present, in the testing process, the on-off condition of each SMD LED lamp on the PCB is mainly identified through human eye observation, and the human eye observation method is simple and easy to implement, but has two defects: 1. the test result is greatly influenced by an observer, and identification errors are likely to occur, so that defective products cannot be tested in time, and certain risk exists; 2. human eye observation requires a certain reaction time, which leads to an increase in the whole test time and labor cost, and once an error is identified, the probability of repeated tests and the rework process are increased.
Therefore, how to provide an automatic LED lamp identification system applied to a production line, so that the system can automatically identify the state of a patch LED lamp on a PCB to be tested, and achieve the effects of improving identification accuracy and reducing test cost, is a technical problem that needs to be solved by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a be applied to LED lamp automatic identification system of production line to solve above-mentioned technical problem.
At first, for realizing above-mentioned purpose, the utility model provides a be applied to LED lamp automatic identification system of production line for the state of the paster LED lamp on the PCB board that awaits measuring of automatic identification, automatic identification system includes:
the light guide jig is used for conducting optical signals sent out by the surface mounted LED lamp;
the bleeder circuit test board is used for converting the optical signal into voltage data;
the test PC is used for analyzing the voltage data so as to judge the state of the SMD LED lamp;
the bleeder circuit test board is connected with the test PC.
Optionally, the leaded light tool includes the leaded light post, the leaded light post adopts organic glass material to make.
Optionally, be equipped with partial pressure definite value resistance, photo resistance and be used for the direct current power supply of power supply on the bleeder circuit test panel, photo resistance is used for receiving optical signal, partial pressure definite value resistance with photo resistance establishes ties, partial pressure definite value resistance both ends parallel connection has voltage measuring device, voltage measuring device is used for measuring voltage data.
Optionally, the test PC includes a software tool for reading the voltage data, and the software tool is further configured to compare the voltage data with a theoretical voltage value at two ends of the voltage dividing fixed-value resistor, so as to determine a state of the patch LED lamp.
Compared with the prior art, the utility model provides a be applied to LED lamp automatic identification system of production line for the state of the paster LED lamp on the PCB board that automatic identification awaits measuring turns into voltage data through bleeder circuit survey test panel with the light signal that paster LED lamp sent, and rethread test PC analysis voltage data reachs the state of paster LED lamp. The utility model discloses replaced the identification method that the people's eye observed, can effectively improve the discernment accuracy, greatly avoided the risk that the discernment mistake produced, improved efficiency of software testing simultaneously, reduced the test cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of an embodiment of an automatic LED lamp identification system applied to a production line according to the present invention;
fig. 2 is a schematic diagram of a voltage dividing circuit of the LED lamp automatic identification system applied to the production line shown in fig. 1.
In the drawings, the components represented by the respective reference numerals are listed below:
the method comprises the following steps of 1-PCB (printed circuit board), 2-SMD (surface mounted device) LED (light emitting diode) lamps, 3-bleeder circuit test board, 4-test PC (personal computer), 5-light guide column, 6-photoresistor, 7-bleeder constant value resistor, 8-direct current power supply and 9-voltage measuring device.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and the embodiments, and it should be understood that the embodiments described herein are only used for explaining the present invention and are not used for limiting the present invention.
The embodiment provides an automatic LED lamp identification system applied to a production line.
In order to test whether the surface mounted LED lamps 2 on the PCB board 1 normally operate, different electric signals need to be loaded on the signal ports of the PCB board 1, whether the functions of the surface mounted LED lamps 2 are normal or not is judged by observing the on-off conditions of the surface mounted LED lamps 2 under different conditions, and then whether the PCB board 1 is a defective product or not is judged.
The patch LED lamps 2 on the PCB board 1 in this embodiment are 3: respectively a GPS signal lamp, a GSM network signal lamp and a POWER lamp. Those skilled in the art will appreciate that the arrangement of the chip LED lamp 2 on the PCB board 1 is various and is not limited to this embodiment.
Referring to fig. 1, in this embodiment, the system for automatically recognizing the status of the chip LED lamp 2 on the PCB 1 to be tested includes:
the light guide jig is used for conducting optical signals sent out by the surface mounted LED lamp 2;
the bleeder circuit test board 3 is used for converting the optical signal into voltage data;
a test PC4 for analyzing the voltage data to determine the status of the patch LED lamp 2;
the voltage dividing circuit test board 3 is connected to a test PC 4.
As described above, the LED lamp automatic identification system applied to the production line in this embodiment includes the light guide jig, the voltage dividing circuit test board 3 and the test PC4, wherein the voltage dividing circuit test board 3 is connected to the test PC4, here, the light signal emitted from the chip LED lamp 2 is first conducted to the voltage dividing circuit test board 3 through the light guide jig, then the light signal emitted from the chip LED lamp 2 is converted into the voltage data through the voltage dividing circuit test board 3, and finally the voltage data is analyzed through the test PC4, so as to obtain the state of the chip LED lamp 2. The embodiment replaces a recognition method observed by human eyes, can effectively improve recognition accuracy, greatly avoids risks caused by recognition errors, improves test efficiency and reduces test cost.
In the concrete scheme, as shown in fig. 1, leaded light tool mainly adopts leaded light post 5 of being made by organic glass material, here because organic glass material's relative leaded light performance is better, can transmit the sensitization position on bleeder circuit survey test panel 3 with the loss of minimum with the light signal that paster LED lamp 2 sent, more specifically, leaded light post 5 has threely, the one end of three leaded light post 5 respectively with the GPS signal lamp, 2 one-to-one of paster LED lamp 2 on GSM network signal lamp and the three PCB board 1 of POWER lamp, the other end of three leaded light post 5 respectively with bleeder circuit survey the sensitization position one-to-one on the test panel 3.
As shown in fig. 2, in order to realize the process that the bleeder circuit test board 3 converts the optical signal emitted by the chip LED lamp 2 into voltage data, in this embodiment, a bleeder constant value resistor 7, a photo resistor 6 and a dc power supply 8 for supplying power are disposed on the bleeder circuit test board 3, and the photo resistor 6 is used as a photosensitive part to receive the optical signal, where the illumination characteristic of the photo resistor 6 is utilized: the resistance value changes with the intensity of the incident light, namely the incident light intensity, the resistance value is reduced, the incident light is weak, and the resistance value is increased. And then through the relation that the fixed value resistance 7 of partial pressure and photo resistance 6 are connected in series and divided, under the condition that the voltage of the direct current power supply 8 is not changed, along with the change of the resistance value of the photo resistance 6, the divided voltage on the fixed value resistance 7 of partial pressure changes, the two ends of the fixed value resistance 7 of partial pressure are connected in parallel with a voltage measuring device 9, and the voltage data is measured by the voltage measuring device 9.
More specifically, referring to fig. 2, in the present embodiment, a voltage dividing constant value resistor 7R is disposed01M omega and three photoresistors 6RL1、RL2And RL3The resistance of the photoresistor 6 is selected as follows:
resistance value | RL1 | RL2 | RL3 |
Bright electricityResistor (K omega) | 15 | 40 | 75 |
Dark resistance (M omega) | 1 | 3 | 5 |
TABLE 1 specification of photoresistors
Three photoresistors 6RL1、RL2And RL3The light guide post 5 correspondingly receives light signals of a GPS signal lamp, a GSM network signal lamp and a POWER lamp, Agilent 66319D is adopted as a direct current POWER supply 8 for stable POWER supply, and a DVM interface of the direct current POWER supply is used as a voltage measuring device 9 to measure a voltage dividing fixed value resistor 7R0Voltage data, here Agilent 66319D supply voltage U ═ 12V. The GPS signal lamp, the GSM network signal lamp and the POWER lamp have eight combined conditions of on and off, and three corresponding photoresistors 6RL1、RL2And RL3The total number of the resistors is eight, and the value of the resistor 7R is determined according to the voltage division0The relation formula of voltage division in series with the photoresistor 6 is as follows: u shape0=U*R0/(R0+RL1+RL2+RL3) Constant value resistor 7R for voltage division0Upper divided theoretical voltage value U0There are eight, listed below:
TABLE 2 different on-off states and theoretical voltage value U of SMD LED lamp0Correspondence table
In order to realize the process that the test PC4 analyzes the voltage data to obtain the state of the SMD LED lamp 2, a software tool is arranged on the test PC4 in the embodiment, and the software tool reads the voltage division constant value resistor 7R0After the voltage data is added, the voltage data is connected with a voltage division constant value resistor 7R0Upper partThe obtained theoretical voltage value U0And comparing to obtain the combined on-off condition of the GPS signal lamp, the GSM network signal lamp and the POWER lamp, thereby realizing the state identification of the surface mounted LED lamp 2. More specifically, as shown in table 2, when the voltage data read by the software tool is close to 10.62V, it can be determined that the GPS signal lamp, the GSM network signal lamp, and the POWER lamp are all on; during testing, when the voltage data read by the software tool is other values, which of the situations of any one or two or no lighting can be specifically judged, and the specific working state of each lamp can be analyzed and judged according to the read voltage data. The above process can be automatically judged and the result given by a software tool.
The embodiment also provides an automatic identification method of the LED lamp applied to the production line, which comprises the automatic identification system, wherein the automatic identification method comprises the following steps:
the method comprises the following steps: conducting an optical signal emitted from the surface mounted LED lamp 2 through the light guide jig;
step two: converting the received optical signal into voltage data through a voltage division circuit test board 3;
step three: the test PC4 reads the voltage data;
step four: the test PC4 analyzes the voltage data and judges the state of the patch LED lamp 2.
In the specific operation process, the first step is to load an electric signal to the PCB board 1 in a full-shading environment, and transmit optical signals sent by a GPS signal lamp, a GSM network signal lamp and a POWER lamp to a photoresistor 6R on a bleeder circuit test board 3 through a light guide column 5 respectivelyL1、RL2And RL3;
In the second step, the resistance value of the photo-resistor 6 receiving the illumination is corresponding to a bright resistance value, the resistance value of the photo-resistor 6 not receiving the illumination is corresponding to a dark resistance value, and finally, the three photo-resistors 6RL1、RL2And RL3And a specific fixed value is formed, and then the voltage division fixed value resistor 7R is measured through the DVM interface0The voltage data on the POWER supply can obtain the on-off condition of a GPS signal lamp, a GSM network signal lamp and a POWER lampVoltage data corresponding to the condition;
in step three, the test PC4 is connected to the bleeder circuit test board 3, and more specifically reads the voltage data measured by the DVM interface in step two through a software tool;
in step four, the software tool in test PC4 compares the voltage data read in step three with the eight theoretical voltage values U in Table 20Comparing one by one to find the closest theoretical voltage value U0In this case, the on/off states of the corresponding GPS signal lamp, GSM network signal lamp, and POWER lamp are the final output results of the operation process.
The LED lamp automatic identification system applied to the production line provided by this embodiment is described in detail above.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. The utility model provides a be applied to LED lamp automatic identification system of production line which characterized in that: a state for the paster LED lamp on the automatic identification PCB board that awaits measuring, the automatic identification system includes:
the light guide jig is used for conducting optical signals sent out by the surface mounted LED lamp;
the bleeder circuit test board is used for converting the optical signal into voltage data;
the test PC is used for analyzing the voltage data so as to judge the state of the SMD LED lamp;
the bleeder circuit test board is connected with the test PC.
2. The automatic identification system of LED lamps applied to the production line according to claim 1, characterized in that: the light guide jig comprises a light guide column, and the light guide column is made of an organic glass material.
3. The automatic identification system of LED lamps applied to the production line according to claim 1, characterized in that: the voltage division circuit testing board is provided with a voltage division fixed value resistor, a photosensitive resistor and a direct current power supply for supplying power, the photosensitive resistor is used for receiving the optical signal, the voltage division fixed value resistor is connected with the photosensitive resistor in series, two ends of the voltage division fixed value resistor are connected in parallel to form a voltage measuring device, and the voltage measuring device is used for measuring voltage data.
4. The LED lamp automatic identification system applied to the production line according to claim 3, characterized in that: the test PC comprises a software tool for reading the voltage data, and the software tool is also used for comparing the voltage data with theoretical voltage values at two ends of the voltage division constant value resistor so as to judge the state of the surface mounted LED lamp.
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CN109884554A (en) * | 2019-04-01 | 2019-06-14 | 上海移为通信技术股份有限公司 | A kind of LED light automatic recognition system and method applied to production line |
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CN109884554A (en) * | 2019-04-01 | 2019-06-14 | 上海移为通信技术股份有限公司 | A kind of LED light automatic recognition system and method applied to production line |
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