CN213932824U

CN213932824U - LED analyzer

Info

Publication number: CN213932824U
Application number: CN202022914810.1U
Authority: CN
Inventors: 雒冬; 林佳才; 冯凯
Original assignee: Zhuhai Prishun Automation Technology Co ltd
Current assignee: Zhuhai Prishun Automation Technology Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-10
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses a LED analyzer, including singlechip, color sensor and USB commentaries on classics serial port unit, the singlechip is provided with first serial ports, a plurality of first GPIO interfaces and a plurality of second GPIO interfaces, a plurality of first GPIO interfaces are suitable for the LED product that the connection outside awaited measuring respectively, the quantity of color sensor is a plurality of, a plurality of color sensors are respectively through I2C bus and corresponding second GPIO interface connection; the USB-to-serial port unit is connected with the first serial port and is suitable for being connected with an external upper computer. The utility model discloses a LED analyzer is based on singlechip framework, and the price is lower, and the development degree of difficulty is lower, can reduce the requirement to operating personnel technical merit, and external a plurality of color sensor can be tested a plurality of LED products that await measuring simultaneously, are favorable to improving detection efficiency to improve the price/performance ratio.

Description

LED analyzer

Technical Field

The utility model relates to a LED detects technical field, in particular to LED analysis appearance.

Background

In order to ensure the quality of products, LED analysis is required before shipment of LED products, such as indicator lamps for communication interfaces, status indicator lamps on automobiles, illumination LED lamps, and the like. Current LED analysis methods include analysis with an LED analyzer and manual visual inspection. LED analyzers on the market are various in types, but are expensive, complex in configuration and high in requirements for technical levels of operators. Manufacturers sensitive to production cost generally choose manual visual inspection, so that the efficiency is low, and the problems of missing detection or false detection exist.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a LED analyzer, based on the singlechip development, have the parallel acquisition circuit of multichannel, can reduction in production cost and improve detection efficiency to improve the price/performance ratio.

According to the utility model discloses LED analysis appearance, including the singlechip, be provided with first serial ports, a plurality of first GPIO interfaces and a plurality of second GPIO interfaces, a plurality of the first GPIO interface is suitable for the LED product that connects the outside awaiting measuring respectively; the color sensors are respectively connected with the corresponding second GPIO interfaces through an I2C bus; and the USB-to-serial port unit is connected with the first serial port and is suitable for being connected with an external upper computer.

According to the utility model discloses LED analysis appearance has following beneficial effect at least:

the utility model discloses a LED analyzer is based on singlechip framework, and the price is lower, and the development degree of difficulty is lower, can reduce the requirement to operating personnel technical merit, and external a plurality of color sensor can be tested a plurality of LED products that await measuring simultaneously, are favorable to improving detection efficiency to improve the price/performance ratio.

According to some embodiments of the present invention, the single chip microcomputer adopts SMT32 series single chip microcomputers.

According to some embodiments of the present invention, the number of the first GPIO interface and the second GPIO interface is all greater than or equal to 5.

According to some embodiments of the present invention, the number of the first GPIO interface and the second GPIO interface is 7.

According to some embodiments of the utility model, the singlechip still is provided with the debugging interface and burns the record interface.

According to some embodiments of the utility model, color sensor includes that casing, infrared ray block filter, photodiode array and ADC converting unit, be provided with the light trap on the casing, infrared ray blocks the filter setting and is in light trap department, the photodiode array sets up in the casing, and be located the infrared ray blocks the inboard of filter, the output of photodiode array with ADC converting unit electric connection, ADC converting unit is used for exporting the acquisition signal.

According to some embodiments of the present invention, the color sensor is a sensor of model TCS 34725.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic block diagram of an LED analyzer according to an embodiment of the present invention;

fig. 2 is a schematic block diagram of a color sensor of the LED analyzer shown in fig. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, the present embodiment discloses an LED analyzer, including a single chip microcomputer 100, a color sensor 200 and a USB serial port conversion unit 300, where the single chip microcomputer 100 is provided with a first serial port 110, a plurality of first GPIO interfaces 120 and a plurality of second GPIO interfaces 130, the plurality of first GPIO interfaces 120 are respectively adapted to connect to external LED products to be detected, the single chip microcomputer 100 controls the LED products to emit light of corresponding colors through the first GPIO interfaces 120 for detection, the number of color sensors 200 is plural, the plurality of color sensors 200 are respectively connected to the corresponding second GPIO interfaces 130 through I2C buses, the USB serial port conversion unit 300 is connected to the first serial port 110, the USB serial port conversion unit 300 is adapted to connect to an external upper computer, such as an electronic computer or an industrial personal computer, light emitted from the LED products irradiates on the corresponding color sensors 200, the color sensors 200 collect and analyze the light and then transmit detection signals to the single chip microcomputer 100, the single chip microcomputer 100 communicates with an upper computer through a first serial port 110 and a USB-to-serial port unit 300. The USB interface supports hot plug, and the commonality is higher, and a host computer can possess a plurality of USB, can carry out the communication with many LED analysis appearance simultaneously, is favorable to reduce cost and improves efficiency of software testing.

The LED analyzer of this embodiment is based on singlechip framework, compares with CPLD treater etc. and the price of singlechip is lower, and the development degree of difficulty is lower, can reduce the requirement to operating personnel technical merit, and singlechip 100 passes through the external a plurality of color sensor 200 of second CPIO interface, can test a plurality of LED products that await measuring simultaneously, is favorable to improving detection efficiency to improve the price/performance ratio.

In the above embodiment, the single chip microcomputer 100 adopts an SMT32 series single chip microcomputer, and an SMT32 series single chip microcomputer has high performance, low cost, low power consumption, and strong universality, is low in development difficulty and has a plurality of GPIO ports, so that the functional requirements of an LED analyzer can be met, and the cost reduction is facilitated.

In the above embodiment, the number of the first GPIO interface 120 and the number of the second GPIO interface 130 are both greater than or equal to 5, for example, the number of the first GPIO interface 120 and the number of the second GPIO interface 130 are both 7, which can simultaneously perform parallel acquisition of 7 channels of data, and is beneficial to improving sampling efficiency, thereby improving the testing efficiency of LED products.

In order to facilitate updating and debugging functions of the LED analyzer, the single chip microcomputer 100 is further provided with a debugging interface 140 and a burning interface 150, wherein the debugging interface 140 adopts a UART interface and is in communication connection with an external computer through the UART interface to implement function debugging.

Referring to fig. 2, the color sensor 200 includes a housing (not shown), an infrared blocking filter 210, a photodiode array 220 and an ADC conversion unit 230, the housing is provided with a light transmitting opening, the infrared blocking filter 210 is disposed at the light transmitting opening, the photodiode array 220 is disposed in the housing, and is located at the inner side of the infrared blocking filter 210, the output end of the photodiode array 220 is electrically connected to the ADC converting unit 230, the ADC converting unit 230 is used for outputting the collected signal, wherein the photodiode array 220 is a 3 × 4 array including white photodiodes, red photodiodes, green photodiodes, and blue photodiodes, the four photodiodes are in different on states according to hue, saturation, and intensity of each color, and outputs different voltages to the ADC converting unit 230 so as to output corresponding detection signals.

In the above embodiment, the color sensor 200 is a sensor with a model number of TCS34725, the accuracy of the TCS34725 sensor is high, and the data conversion rate can reach 400kbit/s, which is beneficial to improving the test accuracy and efficiency.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. An LED analyzer, comprising:

the LED testing device comprises a single chip microcomputer (100) and a testing device, wherein the single chip microcomputer (100) is provided with a first serial port (110), a plurality of first GPIO interfaces (120) and a plurality of second GPIO interfaces (130), and the first GPIO interfaces (120) are respectively suitable for being connected with an external LED product to be tested;

a plurality of color sensors (200) respectively connected with the corresponding second GPIO interfaces (130) through an I2C bus;

and the USB-to-serial port unit (300) is connected with the first serial port (110), and the USB-to-serial port unit (300) is suitable for being connected with an external upper computer.

2. The LED analyzer of claim 1, wherein the single chip microcomputer (100) is a SMT32 series single chip microcomputer (100).

3. The LED analyzer of claim 1 or 2, wherein the number of the first GPIO interface (120) and the second GPIO interface (130) is each greater than or equal to 5.

4. The LED analyzer of claim 3, wherein the number of the first GPIO interfaces (120) and the second GPIO interfaces (130) is 7.

5. The LED analyzer according to claim 1 or 2, characterized in that the single chip microcomputer (100) is further provided with a debugging interface (140) and a burning interface (150).

6. The LED analyzer of claim 1, wherein the color sensor (200) comprises a housing, an infrared blocking filter (210), a photodiode array (220), and an ADC conversion unit (230), wherein the housing is provided with a light transmitting opening, the infrared blocking filter (210) is disposed at the light transmitting opening, the photodiode array (220) is disposed in the housing and located inside the infrared blocking filter (210), an output end of the photodiode array (220) is electrically connected to the ADC conversion unit (230), and the ADC conversion unit (230) is configured to output the collected signal.

7. The LED analyzer of claim 1 or 6, wherein the color sensor (200) is a model TCS34725 sensor.