CN205546117U - Permanent illumination LED light source comprehensive control device of intelligence look selection machine - Google Patents
Permanent illumination LED light source comprehensive control device of intelligence look selection machine Download PDFInfo
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- CN205546117U CN205546117U CN201521024137.7U CN201521024137U CN205546117U CN 205546117 U CN205546117 U CN 205546117U CN 201521024137 U CN201521024137 U CN 201521024137U CN 205546117 U CN205546117 U CN 205546117U
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- 238000011217 control strategy Methods 0.000 claims description 12
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses a permanent illumination LED light source comprehensive control device of intelligence look selection machine, including ARM treater chip, constant current source module, light light intensity sensor module, LED light source temperature detection module, background board adjustment module and FPGA signal processing module, constant current source module, light light intensity sensor module, LED light source temperature detection module, background board adjustment module and FPGA signal processing module all are connected with ARM treater chip. The utility model discloses an use the ARM treater as the core merge the intelligent control technique, based on FPGA's image processing techniques, the permanent illumination LED light source composite control of intelligent look selection machine of PWM control technique, the device can realize the short -term test and the real time control of illumiinance response, makes light source output light intensity stable in required illuminance, provides CIE standard light source for the image acquisition of linear array CCD camera.
Description
Technical Field
The utility model belongs to the technical field of intelligence look selection machine system, concretely relates to permanent illumination LED light source integrated control device of intelligence look selection machine.
Background
The optical system is the key for image information acquisition and material screening of the color sorter system, the constant illumination light source is a vital part in the whole optical system, and the light source with stable illumination provides favorable conditions for realizing a subsequent image processing algorithm. Due to the influences of factors such as temperature, humidity, service life of an LED lamp and the like, the illumination of the light source device of the existing color sorter in China is not uniform enough and poor in consistency, the working efficiency and the color sorting effect of the color sorter are seriously influenced, and the further development of the color sorting industry is restricted.
SUMMERY OF THE UTILITY MODEL
The purpose of the invention is as follows: to the not enough of existence among the prior art, the utility model aims at providing a permanent illumination LED light source integrated control device of intelligence look selection machine, light intensity sensor module turns into the light intensity of gathering and transmits the ARM treater to the magnitude of voltage. The ARM processor compares the received illuminance data with a set standard value, calculates the current value of the LED light source to be compensated through an intelligent control strategy, changes the LED current through a PWM control technology, changes the illuminance of the LED light source, and realizes quick detection, real-time control and stable output of illuminance response.
The technical scheme is as follows: in order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a permanent illumination LED light source integrated control device of intelligence look selection machine which characterized in that: the system comprises an ARM processor chip, a constant current source module, a light intensity sensor module, an LED light source temperature detection module, a background board adjusting module and an FPGA signal processing module; the constant current source module, the illuminance sensor module, the LED light source temperature detection module, the background board adjustment module and the FPGA signal processing module are all connected with the ARM chip; wherein,
the ARM processor chip comprises: an RS232 serial port; a USB interface; a CAN interface; an RS485 interface and an I2C standard bus interface; a PWM register; the storage is used for storing the LED light source illumination data acquired by the device;
The constant current source module analyzes data acquired by the sampling circuit through the ARM processor, and adjusts output current by using a PWM control strategy to realize closed-loop dynamic tracking adjustment of the current;
the illumination sensor module is used for acquiring illumination data of the LED light source, converting the current flowing through the photosensitive diode into digital quantity through the A/D converter and transmitting the digital quantity to the ARM processor;
the LED light source temperature detection module converts the temperature of the LED light source into a voltage quantity through a linear thermistor temperature sensor, and transmits the voltage quantity to the ARM chip in real time after passing through an A/D converter;
the background plate adjusting module is used for adjusting a background required by the linear array CCD camera for image information acquisition;
the FPGA signal processing module is connected with the linear array CCD camera through a Camera Link line, can receive image information acquired by the linear array CCD camera through a Camera Link standard protocol, and detects the damage condition of the LED lamp after the power-on of the switch.
The constant current source module includes: a D/A converter; the voltage-controlled constant current source circuit, ARM processor send the corresponding digital quantity to D/A converter, output the corresponding analog voltage quantity by the conversion, and input the analog voltage quantity to the voltage-controlled constant current source circuit; an A/D converter; and the sampling circuit continuously reads the voltage drop of the sampling resistor through the A/D sampling circuit, further processes the sampled digital quantity data by the ARM processor, and finally dynamically adjusts the output current according to an analysis result and in combination with a PWM control strategy, so that closed-loop control of the output current is formed, and the constancy of the output current is realized.
And the LED light source temperature detection module transmits the detected temperature data to the ARM processor chip and compares the detected temperature data with a temperature set value. If the temperature is higher than the set value, the fan is started to cool the LED light source.
The FPGA signal processing module is matched with the background plate adjusting module to carry out power-on inspection on the damage condition of the LED lamp of one color selection channel. After the system is powered on, the background plate adjusting module adjusts the background to white, the gray calibration plate is placed at the viewpoint of the linear array CCD camera, the camera sends image information at the moment to the FPGA signal processing module through a CameraLink standard protocol, and if the FPGA signal processing module finds that a certain section of each row of pixels is obviously lower than other pixels in the same row, the LED lamp(s) can be judged to be damaged. And the FPGA signal processing module transmits the information that the lamp is damaged to a main control panel of the color selector through the ARM processor.
Has the advantages that: compared with the prior art, the utility model discloses a permanent illumination LED light source integrated control device of intelligence look selection machine has realized using the ARM treater to fuse intelligent control technique as the core, image processing technique based on FPGA, the permanent illumination LED light source integrated control of intelligence look selection machine of PWM control technique, and the device can realize the short-term test and the real time control of illuminance response, makes light source output light intensity stable on required illuminance, provides standard light source for the image acquisition of linear array CCD camera.
Drawings
FIG. 1 is a schematic diagram of a hardware structure of a constant illumination LED light source comprehensive control device of an intelligent color sorter;
FIG. 2 is a schematic diagram of an illumination control strategy of the constant illumination LED light source comprehensive control device of the intelligent color sorter;
fig. 3 is a flow chart of fault detection of the constant illumination LED light source comprehensive control device of the intelligent color sorter.
Detailed Description
The present invention will be further elucidated with reference to the following specific drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.
As shown in fig. 1, a schematic diagram of a hardware structure of a constant illumination LED light source comprehensive control device of an intelligent color sorter includes an ARM processor chip, a constant current source module, an illuminance sensor module, an LED light source temperature detection module, a background board adjustment module, and an FPGA signal processing module. Wherein,
and the constant current source module analyzes the data acquired by the sampling circuit through the ARM processor and dynamically tracks and adjusts the output current by utilizing a PWM control strategy, so that closed-loop control of the output current is formed and the constancy of the output current is realized.
And the illumination sensor module is used for acquiring illumination data of the LED light source, converting the current flowing through the photosensitive diode into digital quantity through the A/D converter and transmitting the digital quantity to the ARM processor. The ARM processor compares the detected illuminance value with the illuminance set value, and outputs a control signal to the constant current source module by adopting an intelligent control strategy, so that the output power supply of the constant current source is continuously adjusted, and the brightness of the LED light source is adjusted to a stable state.
And the LED light source temperature detection module converts the temperature of the LED light source into a voltage quantity through the linear thermistor temperature sensor, and transmits the voltage quantity to the ARM chip in real time after passing through the A/D converter. The ARM processor chip compares the received temperature data with a set value. If the temperature is higher than the set value, the fan is started to cool the LED light source.
The background plate adjusting module is used for adjusting a background required by the linear array CCD camera during image information acquisition;
the FPGA signal processing module is connected with the linear array CCD camera through a Camera Link line, can receive image information acquired by the linear array CCD camera through a Camera Link standard protocol, and detects the damage condition of the LED lamp after the power-on of the switch;
as shown in fig. 2, an illuminance control strategy diagram of the constant illumination LED light source comprehensive control device of the intelligent color sorter is shown. After the color selector system is powered on for a period of time, the illumination sensor module converts the current flowing through the photosensitive diode into digital quantity through the A/D converter and transmits the digital quantity to the ARM processor. The ARM processor compares the detected illuminance value with an illuminance set value, and outputs a control signal to the constant current source module by adopting an intelligent control strategy according to the nonlinear relation between the LED lamp light intensity and the current, and the constant current source module receives the control signal and drives the voltage-controlled constant current source circuit to output the current to the LED light source so as to adjust the illuminance of the LED light source. Meanwhile, the ARM processor analyzes data collected by a sampling circuit of the constant current source module, and dynamic tracking adjustment is carried out on output current by using a PWM control strategy, so that closed-loop control of the output current is formed, the constant of the output current is realized, and the stability of the light intensity of the LED is further ensured.
As shown in fig. 3, a flow chart of fault detection of the constant illumination LED light source integrated control device of the intelligent color sorter is shown. After the system is started and powered on, firstly, the FPGA signal processing module and the background plate adjusting module are utilized to carry out power-on inspection on the damage condition of the LED lamp of one color selection channel. The background plate adjusting module adjusts the background to be white, the gray calibration plate is placed at the viewpoint of the linear array CCD camera, the camera sends image information at the moment to the FPGA signal processing module through a CameraLink standard protocol, and if the FPGA signal processing module finds that a certain section of each row of pixels is obviously lower than other pixels in the same row, the LED lamp(s) can be judged to be damaged. The FPGA signal processing module transmits the information that the lamp is damaged to a main control panel of the color selector through an ARM processor, and the information is displayed on a touch screen to remind a customer of replacing the LED lamp in time.
The light intensity sensor module converts the current flowing through the photosensitive diode into digital quantity through the A/D converter and transmits the digital quantity to the ARM processor. The ARM processor compares the detected illuminance value with an illuminance set value, and if the detected illuminance value is larger than or smaller than the set value, the output current of the constant current source module is reduced or increased to the LED light source by adopting an intelligent control strategy and a PWM control technology according to the nonlinear relation between the LED light intensity and the current, so that the illuminance of the LED light source is adjusted, and the stability of the illuminance of the LED light source is ensured. If the detected illuminance value is smaller than the set value and the LED light source cannot reach the set brightness no matter how the output current of the constant current source module is increased, the LED lamp is damaged, the ARM processor uploads the information to the color selector main control board, and the information is displayed on the touch screen and reminds a client to replace the LED lamp in time.
Claims (4)
1. The utility model provides a permanent illumination LED light source integrated control device of intelligence look selection machine which characterized in that: the system comprises an ARM processor chip, a constant current source module, a light intensity sensor module, an LED light source temperature detection module, a background board adjusting module and an FPGA signal processing module; the constant current source module, the illuminance sensor module, the LED light source temperature detection module, the background board adjustment module and the FPGA signal processing module are all connected with the ARM chip; wherein,
the ARM processor chip comprises: an RS232 serial port; a USB interface; a CAN interface; an RS485 interface and an I2C standard bus interface; a PWM register; the storage is used for storing the LED light source illumination data acquired by the device;
the constant current source module analyzes data acquired by the sampling circuit through the ARM processor, and adjusts output current by using a PWM control strategy to realize closed-loop dynamic tracking adjustment of the current;
the illumination sensor module is used for acquiring illumination data of the LED light source, converting the current flowing through the photosensitive diode into digital quantity through the A/D converter and transmitting the digital quantity to the ARM processor;
the LED light source temperature detection module converts the temperature of the LED light source into a voltage quantity through a linear thermistor temperature sensor, and transmits the voltage quantity to the ARM chip in real time after passing through an A/D converter;
The background plate adjusting module is used for adjusting a background required by the linear array CCD camera for image information acquisition;
the FPGA signal processing module is connected with the linear array CCD camera through a Camera Link line, can receive image information acquired by the linear array CCD camera through a Camera Link standard protocol, and detects the damage condition of the LED lamp after the power-on of the switch.
2. The constant illumination LED light source comprehensive control device of the intelligent color selector, according to claim 1, is characterized in that: the constant current source module includes: a D/A converter; the voltage-controlled constant current source circuit, ARM processor send the corresponding digital quantity to D/A converter, output the corresponding analog voltage quantity by the conversion, and input the analog voltage quantity to the voltage-controlled constant current source circuit; an A/D converter; and the sampling circuit continuously reads the voltage drop of the sampling resistor through the A/D sampling circuit, further processes the sampled digital quantity data by the ARM processor, and finally dynamically adjusts the output current according to an analysis result and in combination with a PWM control strategy, so that closed-loop control of the output current is formed, and the constancy of the output current is realized.
3. The constant illumination LED light source comprehensive control device of the intelligent color selector, according to claim 1, is characterized in that: the LED light source temperature detection module and the ARM processor compare the temperature data transmitted by the temperature detection module with a temperature set value; if the temperature is higher than the set value, the fan is started to cool the LED light source.
4. The constant illumination LED light source comprehensive control device of the intelligent color selector, according to claim 1, is characterized in that: the FPGA signal processing module is matched with the background plate adjusting module to carry out power-on inspection on the damage condition of the LED lamp of one color selection channel; after the system is powered on, the background plate adjusting module adjusts the background to white, a gray calibration plate is placed at a viewpoint of the linear array CCD camera, the camera sends image information at the moment to the FPGA signal processing module through a CameraLink standard protocol, and if the FPGA signal processing module finds that a certain section of each row of pixels is obviously lower than other pixels in the same row, the FPGA signal processing module can judge which LED lamp is damaged; and the FPGA signal processing module transmits the information that the lamp is damaged to a main control panel of the color selector through the ARM processor.
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| CN201521024137.7U CN205546117U (en) | 2015-12-11 | 2015-12-11 | Permanent illumination LED light source comprehensive control device of intelligence look selection machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106094198A (en) * | 2016-06-15 | 2016-11-09 | 南京林业大学 | A kind of intelligence color selector optical system self-adapting correction method and device |
| CN106793337A (en) * | 2017-01-23 | 2017-05-31 | 深圳创维－Rgb电子有限公司 | A kind of circuit for lifting LED backlight brightness, method, device and controller |
| CN108940930A (en) * | 2018-08-31 | 2018-12-07 | 安徽捷泰智能科技有限公司 | Color selector tunable light source color sorting device |
-
2015
- 2015-12-11 CN CN201521024137.7U patent/CN205546117U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106094198A (en) * | 2016-06-15 | 2016-11-09 | 南京林业大学 | A kind of intelligence color selector optical system self-adapting correction method and device |
| CN106793337A (en) * | 2017-01-23 | 2017-05-31 | 深圳创维－Rgb电子有限公司 | A kind of circuit for lifting LED backlight brightness, method, device and controller |
| CN106793337B (en) * | 2017-01-23 | 2019-08-06 | 深圳创维－Rgb电子有限公司 | A kind of circuit, method, apparatus and controller promoting LED backlight brightness |
| CN108940930A (en) * | 2018-08-31 | 2018-12-07 | 安徽捷泰智能科技有限公司 | Color selector tunable light source color sorting device |
| CN108940930B (en) * | 2018-08-31 | 2023-08-08 | 安徽捷泰智能科技有限公司 | Adjustable light source color selection device for color selector |
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Address after: 210000 No. 24-26 Xinxinqiao East Street, Qinhuai District, Nanjing City, Jiangsu Province Patentee after: Nanjing Yao Miao Photoelectric Technology Co. Ltd. Address before: 210000 Bofu Road, Riverside Development Zone, Liuhe District, Nanjing City, Jiangsu Province Patentee before: Jiangsu Xiantong Photoelectric Technology Co., Ltd. |
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Granted publication date: 20160831 Termination date: 20201211 |