阅读说明：本技术 一种led光源特性检验装置和方法 (A kind of LED light source characteristic verifying attachment and method ) 是由 李林松 于 2019-08-16 设计创作，主要内容包括：本发明涉及LED检测设备技术领域,公开一种LED光源特性检验装置和方法,该装置包括恒流驱动单元、分光光路单元、处理单元以及分别与处理单元电性连接的CCD传感器、RGB颜色传感器、电压检测单元和显示单元；恒流驱动单元用于连接被检验的LED光源；分光光路单元用于将LED光源发出的光进行分解并将分解后的光投向CCD传感器；RGB颜色传感器用于采集LED光源的红绿蓝三种颜色分量的亮度信号；电压检测单元的输入端用于与LED光源连接,并用于采集LED光源的正向导通电压。本发明的处理单元对CCD传感器、RGB颜色传感器和电压检测单元进行协调以及对检验信号进行处理,可以避免手工检验导致的误操作,以及降低各项特性检测工序之间的衔接时间,提供生产效率。(The present invention relates to LED detection device technical fields, a kind of LED light source characteristic verifying attachment and method are disclosed, which includes constant current driving unit, light splitting optical path unit, processing unit and ccd sensor, RGB color sensor, voltage detection unit and the display unit being electrically connected respectively with processing unit；Constant current driving unit is for connecting examined LED light source；The light that light splitting optical path unit is used to issue LED light source decompose and the light after decomposition is invested ccd sensor；RGB color sensor is used to acquire the luminance signal of three kinds of color components of RGB of LED light source；The input terminal of voltage detection unit with LED light source for connecting, and the forward conduction voltage for acquiring LED light source.Processing unit of the invention coordinate to ccd sensor, RGB color sensor and voltage detection unit and be handled inspection signal, it can be to avoid maloperation caused by hand test, and the convergence time between the every Characteristics Detection process of reduction, production efficiency is provided.)

1. a kind of LED light source characteristic verifying attachment, it is characterised in that: including constant current driving unit (1), light splitting optical path unit (2), Processing unit (6) and respectively with the processing unit (6) be electrically connected ccd sensor (3), RGB color sensor (4), Voltage detection unit (5) and display unit (7)；

The constant current driving unit (1) is for connecting examined LED light source (9)；

The light splitting optical path unit (2) is used to carry out decomposing the light that the LED light source (9) issue and invest the light after decomposition The ccd sensor (3)；

The RGB color sensor (4) is used to acquire the luminance signal of three kinds of color components of RGB of the LED light source (9), And luminance signal is sent to the processing unit (6)；

The input terminal of the voltage detection unit (5) for connecting with the LED light source (9), use by the voltage detection unit (5) In the forward conduction voltage of the acquisition LED light source (9), and forward conduction voltage is sent to the processing unit (6).

2. LED light source characteristic verifying attachment as described in claim 1, it is characterised in that: the light splitting optical path unit (2) includes Black box (201) and the optical slot (202) and reflective light splitting piece (203) for being separately positioned on the black box (201) both ends.

3. a kind of LED light source characteristic method of inspection, which is characterized in that examined based on LED light source characteristic of any of claims 1 or 2 Experiment device, comprising the following steps:

The examined LED light source (9) of access, the constant current driving unit (1) are that the LED light source (9) provide constant current driving electricity Source；

The light that the LED light source (9) issues is decomposed and invests the ccd sensor by the light splitting optical path unit (2) (3)；

The ccd sensor (3) will carry out colour imaging from the optical signal of the light splitting optical path unit (2), and imaging is believed Number it is sent to the processing unit (6)；

The RGB color sensor (4) carries out brightness detection to the light that the LED light source (9) issues, and luminance signal is sent Give the processing unit (6)；

The voltage detection unit (5) by the forward conduction voltage drop of the LED light source (9), and will test signal be sent to it is described Processing unit (6)；

The processing unit (6) acquire respectively and examine from the ccd sensor (3), the RGB color sensor (4) and The signal of the voltage detection unit (5), and the signal after inspection is sent to the display unit (7).

4. the LED light source characteristic method of inspection as claimed in claim 3, which is characterized in that the ccd sensor (3) will come from The optical signal of the light splitting optical path unit (2) carries out colour imaging, and imaging signal is sent to the tool of the processing unit (6) The step of body are as follows:

Processing unit (6) the Xiang Suoshu ccd sensor (3) issues clock signal and synchronous control signal；

Under the control of the clock signal and the synchronous control signal, the ccd sensor (3) will come from the light splitting light The optical signal of road unit (2) is converted into the analog signal of three kinds of colors of RGB, and the analog signal is sent to the place It manages unit (6).

5. the LED light source characteristic method of inspection as claimed in claim 3, which is characterized in that the processing unit (6) acquires and examines The method for testing the signal from the ccd sensor (3) are as follows:

It is converted into the signal from the ccd sensor (3) to meet CIE1931 standard using polynomial regression approach method XYZ color gamut data；

The mapping table of the XYZ chromaticity coordinate and respective wavelength that are provided according to CIE1931 standard, finds out and the XYZ color The corresponding wavelength of numeric field data, the wavelength are the wavelength of the LED light source (9).

6. the LED light source characteristic method of inspection as claimed in claim 3, which is characterized in that the processing unit (6) acquires and examines The method for testing the signal from the RGB color sensor (4) are as follows:

The brightness value of RGB three signal component of processing unit (6) acquisition from the RGB color sensor (4)；

The brightness value of the LED light source (9) is calculated according to formula Y=0.299R+0.587G+0.114B, wherein R is danger signal The brightness value of component, G are the brightness value of green color signal component, and B is the brightness value of blue signal component.

Technical field

The present invention relates to LED detection device technical fields, and in particular to a kind of LED light source characteristic verifying attachment and method.

Background technique

It in LED production process, needs to test to the characteristic of LED light source, the characteristic of LED light source includes LED forward direction The multinomial characteristic such as voltage, brightness and wavelength is needed in checkout procedure using a variety of inspection equipment, and test process is cumbersome, by hand Operation is easy error, it is difficult to guarantee the consistency of checkout procedure control, working efficiency is low.

Summary of the invention

In view of the deficiencies of the prior art, it is an object of the invention at least solve the technical problems existing in the prior art it One, a kind of LED light source characteristic verifying attachment is provided, for solving the problems, such as that LED light source hand test is easy error.

The contents of the present invention are as follows:

A kind of LED light source characteristic verifying attachment, including constant current driving unit, light splitting optical path unit, processing unit and point Ccd sensor, RGB color sensor, voltage detection unit and the display unit not being electrically connected with the processing unit；

The constant current driving unit is for connecting examined LED light source；

The light that the light splitting optical path unit is used to issue the LED light source decompose and the light after decomposition is invested institute State ccd sensor；

The RGB color sensor is used to acquire the luminance signal of three kinds of color components of RGB of the LED light source, and Luminance signal is sent to the processing unit；

The input terminal of the voltage detection unit with the LED light source for connecting, and the voltage detection unit is for adopting Collect the forward conduction voltage of the LED light source, and forward conduction voltage is sent to the processing unit.

Preferably, the light splitting optical path unit include black box and be separately positioned on the black box both ends optical slot and Reflective light splitting piece.

The present invention also provides a kind of LED light source characteristic methods of inspection, are easy error for solving LED light source hand test Problem.

A kind of LED light source characteristic method of inspection, based on above-mentioned LED light source characteristic verifying attachment, comprising the following steps:

The examined LED light source of access, the constant current driving unit provide constant-current driving power supply for the LED light source；

The light that the LED light source issues is decomposed and invests the ccd sensor by the light splitting optical path unit；

The ccd sensor will carry out colour imaging from the optical signal of the light splitting optical path unit, and by imaging signal It is sent to the processing unit；

The RGB color sensor carries out brightness detection to the light that the LED light source issues, and luminance signal is sent to The processing unit；

The forward conduction voltage drop of the LED light source will test signal and is sent to the place by the voltage detection unit Manage unit；

The processing unit is acquired respectively and is examined from the ccd sensor, the RGB color sensor and the electricity The signal of detection unit is pressed, and the signal after inspection is sent to the display unit.

Preferably, the ccd sensor will carry out colour imaging from the optical signal of the light splitting optical path unit, and will be at As signal is sent to the specific step of the processing unit are as follows:

The processing unit issues clock signal and synchronous control signal to the ccd sensor；

Under the control of the clock signal and the synchronous control signal, the ccd sensor will come from the light splitting The optical signal of optical path unit is converted into the analog signal of three kinds of colors of RGB, and the analog signal is sent to the processing Unit.

Preferably, the method that the processing unit acquires and examines the signal from the ccd sensor are as follows:

The signal from the ccd sensor is converted into using polynomial regression approach method to meet CIE1931 standard XYZ color gamut data；

According to CIE1931 standard provide XYZ chromaticity coordinate and respective wavelength mapping table, find out with it is described The corresponding wavelength of XYZ color gamut data, the wavelength are the wavelength of the LED light source.

Preferably, the method that the processing unit acquires and examines the signal from the RGB color sensor are as follows:

The brightness value of RGB three signal component of the processing unit acquisition from the RGB color sensor；

The brightness value of the LED light source is calculated according to formula Y=0.299R+0.587G+0.114B, wherein R is red letter The brightness value of number component, G are the brightness value of green color signal component, and B is the brightness value of blue signal component.

The invention has the benefit that ccd sensor of the invention, RGB color sensor and voltage detection unit difference Signal is examined for acquiring the every of examined LED light source, and signal will be examined to be sent to processing unit, processing unit is to CCD Sensor, RGB color sensor and voltage detection unit coordinate and are handled inspection signal, can be to avoid craft Maloperation caused by examining, and the convergence time between every Characteristics Detection process is reduced, production efficiency is provided.

Detailed description of the invention

Fig. 1 show the functional block diagram of LED light source characteristic verifying attachment embodiment of the present invention；

Fig. 2 show the schematic diagram of the light splitting optical path unit of the embodiment of the present invention.

Specific embodiment

The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention, And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.

Please refer to Fig. 1, a kind of LED light source characteristic verifying attachment disclosed in the present embodiment, including constant current driving unit 1, point Light optical path unit 2, processing unit 6 and (the Charge Coupled of ccd sensor 3 being electrically connected respectively with processing unit 6 Device, ccd image sensor), RGB color sensor 4, voltage detection unit 5 and display unit 7, should think To the verifying attachment of the present embodiment further includes that built-in or external power supply unit 8, power supply unit 8 can be Switching Power Supply Or constant cell, power supply unit 8 respectively with processing unit 6, constant current driving unit 1, ccd sensor 3 and RGB color sensor 4 Connection, and power for each unit.

Constant current driving unit 1 can be using existing constant-current source circuit or constant-current driven chip and its peripheral circuit, constant current Driving unit 1 provides constant-current driving power supply for connecting examined LED light source 9, and for examined LED light source 9.

Fig. 1-2 is please referred to, light splitting optical path unit 2 is used to carry out decomposing the light that the LED light source 9 being examined issues and will divide Light after solution invests ccd sensor 3, specifically, light splitting optical path unit 2 includes black box 201 and is separately positioned on 201 liang of black box The optical slot 202 and reflective light splitting piece 203 at end, the light that examined LED light source 9 issues pass through by optical slot 202, black After the optical path that box 201 and reflective light splitting piece 203 form is decomposed, it is incident upon on ccd sensor 3.It should be it is contemplated that light splitting light Together with road unit 2 can integrate with ccd sensor 3, it can also be provided separately.

Ccd sensor 3 uses linear CCD sensor, and compared with Matrix C CD sensor, the noise of linear CCD sensor is more Few, the color of acquisition is more accurate, and the signal of acquisition is tested convenient for processing unit 6.

RGB color sensor 4 is used to acquire the luminance signal of three kinds of color components of RGB of examined LED light source 9.

Voltage detection unit 5 can use existing voltage detecting circuit or chip, and the input terminal of voltage detection unit 5 is used In the examined LED light source 9 of connection, voltage detection unit 5 is used to detect the forward conduction voltage drop of examined LED light source 9, and It will test signal and be sent to processing unit 6.

Processing unit 6 can be using chip or circuit with logic processing capability, and processing unit 6 for acquiring simultaneously respectively The signal from ccd sensor 3, RGB color sensor 4 and voltage detection unit 5 is examined, and the signal after inspection is sent To display unit 7.Processing unit 6 to ccd sensor 3, RGB color sensor 4 and voltage detection unit 5 carry out coordinate and it is right Signal is examined to be handled, can be to avoid maloperation caused by hand test, and reduce between every Characteristics Detection process Convergence time provides production efficiency.

Display unit 7 uses liquid crystal display, for showing project, the data of detection, test criterion and the inspection examined As a result, checking checkout procedure and result convenient for operator.

Fig. 1 is please referred to, the present embodiment also provides a kind of examined LED light source characteristic method of inspection, the method for inspection base In above-mentioned examined LED light source characteristic verifying attachment, comprising the following steps:

The examined LED light source 9 of access, constant current driving unit 1 are that examined LED light source 9 provides constant-current driving power supply；

The light that examined LED light source 9 issues is decomposed and invests ccd sensor 3 by light splitting optical path unit 2；

Ccd sensor 3 will carry out colour imaging from the optical signal of light splitting optical path unit 2, and imaging signal is sent to Processing unit 6；

RGB color sensor 4 carries out brightness detection to the light that examined LED light source 9 issues, and luminance signal is sent To processing unit 6；

The forward conduction voltage drop of examined LED light source 9 will test signal and is sent to processing by voltage detection unit 5 Unit 6；

Processing unit 6 is acquired respectively and is examined from ccd sensor 3, RGB color sensor 4 and voltage detection unit 5 Signal, and the signal after inspection is sent to display unit 7.

The method of inspection of the present embodiment, through the processing unit 6 pairs of ccd sensors 3, RGB color sensor 4 and voltage detecting Unit 5 coordinate and is handled inspection signal, can be to avoid maloperation caused by hand test, and is reduced every Convergence time between Characteristics Detection process, provides production efficiency.

Wherein, ccd sensor 3 will carry out colour imaging from the optical signal of light splitting optical path unit 2, and imaging signal is sent out Give the specific step of processing unit 6 are as follows:

Processing unit 6 issues clock signal and synchronous control signal to ccd sensor 3；

Under the control of clock signal and synchronous control signal, ccd sensor 3 will be believed from the light of light splitting optical path unit 2 Number it is converted into the analog signal of three kinds of colors of RGB, and analog signal is sent to processing unit 6.

Specifically, the method that processing unit 6 acquires and examines the signal from ccd sensor 3 are as follows:

The signal from ccd sensor 3 is converted into using polynomial regression approach method to meet CIE1931 standard XYZ color gamut data；

According to CIE1931 standard provide XYZ chromaticity coordinate and respective wavelength mapping table, find out with it is above-mentioned The corresponding wavelength of XYZ color gamut data, the wavelength are the wavelength of examined LED light source 9.

Specifically, the method that processing unit 6 acquires and examines the signal from RGB color sensor 4 are as follows:

The brightness value of RGB three signal component of the acquisition of processing unit 6 from RGB color sensor 4；

The brightness value of examined LED light source 9 is calculated according to formula Y=0.299R+0.587G+0.114B, wherein R is red The brightness value of chrominance signal component, G are the brightness value of green color signal component, and B is the brightness value of blue signal component.

The above, only presently preferred embodiments of the present invention, the invention is not limited to above embodiment, as long as It reaches technical effect of the invention with identical means, all should belong to protection scope of the present invention.In protection model of the invention Its technical solution and/or embodiment can have a variety of different modifications and variations in enclosing.