CN112654124B - Light source controller with real-time synchronous trigger output or warning output and method thereof - Google Patents
Light source controller with real-time synchronous trigger output or warning output and method thereof Download PDFInfo
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- CN112654124B CN112654124B CN202011624219.0A CN202011624219A CN112654124B CN 112654124 B CN112654124 B CN 112654124B CN 202011624219 A CN202011624219 A CN 202011624219A CN 112654124 B CN112654124 B CN 112654124B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000003321 amplification Effects 0.000 claims description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 230000002238 attenuated effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001960 triggered effect Effects 0.000 abstract 1
- 230000005856 abnormality Effects 0.000 description 7
- 230000004044 response Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/20—Responsive to malfunctions or to light source life; for protection
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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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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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stroboscope Apparatuses (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a light source controller with real-time synchronous trigger output or warning output and a realization method thereof, wherein the light source controller comprises the following components: a main control module; a light source; the light source driving module is respectively and electrically connected with the main control module and the light source; the light source voltage comparison module and the light source current comparison module are respectively and electrically connected with the main control module and the light source driving module; the trigger input module is electrically connected with the main control module; the logic processing module is respectively and electrically connected with the main control module, the light source voltage module and the light source current module; the synchronous trigger output module is electrically connected with the main control module; and the warning output module is electrically connected with the main control module. The invention ensures that the light source controller takes little time to judge the on-off of the light source, ensures that the light source is in a lighting state when the camera is in acquisition, ensures that the picture effect reaches an ideal state, and outputs a warning signal to inform the outside whether the light source can be normally lighted or not when the light source is triggered at the time.
Description
Technical Field
The invention belongs to the field of semiconductor integrated circuits, and particularly relates to a light source controller with real-time synchronous trigger output or warning output and an implementation method thereof.
Background
At present, the synchronous triggering requirement of the machine vision industry on a light source and a camera is higher and higher, in order to improve the production efficiency, the exposure time of the camera is shorter and shorter, and the response time of a light source controller for lighting the light source and the response time of a camera for collecting pictures are changed due to the interference of field environment and electronic devices, so that the pictures shot by the camera are not ideal, and further erroneous judgment is generated during image analysis.
In the prior art, although the trigger signal is given to the light source controller, the light source controller fails to normally output electric energy to the light source or the light source is abnormal, so that the light source is not lightened (such as a short circuit of the light source), and the light source controller fails to output a warning signal in real time to inform the outside that the abnormality occurs, so that the abnormality always occurs. If the common AD acquisition program algorithm is adopted to analyze the mode for too long, the real-time performance is poor, so that the triggering frequency of the controller is reduced. The cost is too high if high-speed AD acquisition and high-speed processor processing are employed.
Therefore, a method for implementing a light source controller with real-time synchronous triggering output or warning output is needed, which can ensure that when a light source is lightened, a synchronous signal is output in real time to trigger a camera to collect pictures.
Disclosure of Invention
The invention aims at: in order to solve the problems that the response time of the light source controller for lighting the light source and the response time of the camera for collecting pictures are changed, so that the pictures shot by the camera are not ideal, misjudgment is further generated during image analysis, and meanwhile, the light source controller cannot output a warning signal in real time to inform the outside of abnormality, so that the abnormality always occurs.
In order to achieve the above purpose, the invention adopts the following specific technical scheme:
a light source controller having a real-time synchronous trigger output or a warning output, the light source controller comprising:
a main control module;
a light source;
the light source driving module is respectively and electrically connected with the main control module and the light source and is used for outputting voltage and current to light the light source;
the light source voltage comparison module is respectively and electrically connected with the main control module and the light source driving module and is used for collecting the light source voltage in real time and comparing the light source voltage with the comparison voltage set by the main control module in real time;
the light source current comparison module is respectively and electrically connected with the main control module and the light source driving module and is used for collecting light source current in real time and comparing the light source current with comparison current set by the main control module in real time;
the trigger input module is electrically connected with the main control module and is used for transmitting a trigger signal to the main control module;
the logic processing module is respectively and electrically connected with the main control module, the light source voltage module and the light source current module and is used for logically processing the result output by the light source voltage comparison module and the result output by the light source current comparison module in real time and then giving the processed result to the main control module;
the synchronous triggering output module is electrically connected with the main control module and is used for outputting a signal to trigger the camera to acquire pictures;
and the warning output module is electrically connected with the main control module and is used for outputting warning signals.
The light source controller with real-time synchronous triggering output or warning output further comprises a display module which is electrically connected with the main control module and used for displaying success times and failure times.
The light source controller with real-time synchronous triggering output or warning output further comprises a communication module which is electrically connected with the main control module and used for reading the counted data.
In addition, the invention also provides a realization method of the light source controller with real-time synchronous trigger output or warning output, which comprises the following steps:
the main control module controls the light source driving module to output corresponding current and voltage to the light source;
the main control module sets a comparison voltage value of the light source voltage comparison module and a comparison current value of the light source current comparison module according to the voltage and the current required by the light source when the light source reaches the required brightness;
the trigger input module gives a trigger signal to the main control module, and the main control module effectively controls whether the light source driving module outputs voltage and current to light the light source according to whether the received trigger signal is received;
the light source voltage comparison module and the light source current comparison module respectively collect light source voltage and light source current in real time, compare the light source voltage with comparison voltage and comparison current set by the main control module in real time, and give comparison results to the logic processing module in real time;
the logic processing module logically processes the result output by the light source voltage comparison module and the result output by the light source current comparison module in real time and then sends the processed result to the main control module;
the main control module analyzes the digital signals sent by the logic processing module and combines the signals input by the trigger input module to judge whether the light source is normally turned on, and if the light source is already turned on, the synchronous trigger output module is controlled to output signals to trigger the camera to acquire pictures; if the light source is not turned on within a specified time, controlling the warning output module to output a warning signal; and the repeated triggering input module inputs a triggering signal, the light source voltage comparison module and the light source current comparison module respectively compare the light source voltage and the light source current in real time, the logic processing module processes the comparison result, and the main control module analyzes the processing result.
An improvement of the implementation method of the light source controller with real-time synchronous triggering output or warning output, further comprises: and displaying the counted success times and failure times through a display module.
An improvement of the implementation method of the light source controller with real-time synchronous triggering output or warning output, further comprises: and reading data for counting the success times and the failure times through a communication module.
Compared with the prior art, the invention has at least the following technical effects:
(1) The invention adopts the technical means that the light source controller detects and compares the output voltage and current conditions simultaneously through the hardware circuit, solves the problem that the response time of the light source controller for lighting the light source and the response time of the camera for collecting pictures are abnormal, realizes that the light source controller takes little time to judge the lighting and the shutting of the light source, and further outputs a synchronous signal to trigger the camera to collect pictures when the light source is actually lighted, thereby ensuring that the light source is in a lighted state when the camera is collected;
(2) The invention outputs the warning signal to inform the outside whether the light source can be normally lightened or not by the warning output module, solves the problem that the abnormality always occurs due to the fact that the light source controller cannot output the warning signal in real time to inform the outside of the abnormality, and realizes the technical effect of timely adjusting the abnormality.
Drawings
FIG. 1 is a schematic diagram of a light source controller according to the present application;
FIG. 2 is a functional block diagram of an embodiment of the present application;
FIG. 3 is a block diagram illustrating a connection between a light source driving module and a light source according to an embodiment of the present disclosure;
FIG. 4 is a block diagram illustrating the connection of a light source voltage comparison module, a light source current comparison module, and a logic processor according to an embodiment of the present disclosure;
fig. 5 is a structural block diagram of connection of a main control module, a trigger input module, a synchronous trigger output module, a warning output module, a display module and a communication module according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
As shown in fig. 1 to 5, a light source controller with real-time synchronous trigger output or warning output of the present application includes:
a light source 1;
the main control module 2 mainly comprises a microprocessor STM32F103 and a digital-to-analog conversion chip DAC108S085;
the light source driving module 3 mainly comprises a negative feedback constant current circuit formed by LM258, 50N06, a resistor and a capacitor and a light source switch control circuit formed by 2N7002, wherein the output current value is the positive input voltage of LM258 divided by R80, namely 1 omega, and is electrically connected with a microprocessor and a digital-to-analog conversion chip of the main control module 2 and also connected with the light source 1, and is used for outputting voltage and current to light the light source 1;
the light source voltage comparison module 4 mainly comprises a differential amplification circuit formed by LM258 and a comparison circuit formed by LM 393; the amplification factor K1 of the differential amplification circuit is 0.1, namely the voltage at two ends of the light source is attenuated by 10 times after passing through the differential amplification circuit and is respectively and electrically connected with the digital-to-analog conversion chip of the main control module 2 and the light source driving module 3, and the differential amplification circuit is used for collecting the voltage of the light source 1 in real time and comparing the voltage with the comparison voltage set by the main control module 2 in real time;
the light source current comparison module 5 mainly comprises a differential amplification circuit formed by LM258 and a comparison circuit formed by LM 393; the current passes through R80, namely 1 omega, the voltage at two ends of R80 is current 1, the amplification factor K2 of the differential amplification circuit is 2, namely the voltage is amplified by 2 times after passing through the differential amplification circuit, and the current is respectively and electrically connected with a digital-to-analog conversion chip of the main control module 2 and the light source driving module 3, and is used for collecting the current of the light source 1 in real time and comparing the current with the comparison current set by the main control module 2 in real time;
the trigger input module 6 mainly comprises an optical coupler TLP291 and is electrically connected with the microprocessor of the main control module 2 and used for transmitting a trigger signal to the main control module 2;
the logic processing module 7 mainly comprises a logic AND gate 74HC08, is respectively and electrically connected with the microprocessor of the main control module 2, the light source voltage comparison module 4 and the light source current comparison module 5, and is used for logically processing the result output by the light source voltage comparison module 4 and the result output by the light source current comparison module 5 in real time and then giving the processed result to the main control module 2;
the synchronous triggering output module 8 mainly comprises an optical coupler TLP291 and is electrically connected with a microprocessor of the main control module 2 and used for outputting a signal to trigger the camera to acquire pictures;
the warning output module 9 mainly comprises an optical coupler TLP291 and is electrically connected with the microprocessor of the main control module 2 and used for outputting a warning signal;
the display module 10 mainly comprises a nixie tube and is electrically connected with the main control module 2 and used for displaying success times and failure times;
the communication module 11 mainly comprises serial port level conversion cores MAX3232 pieces, is electrically connected with the main control module 2 and is used for reading the counted data;
the current of the light source 1 is 24V at 1A.
The implementation method of the light source controller with real-time synchronous triggering output or warning output comprises the following steps:
(1) STM32F103 of main control module 2 controls DAC108S085 to output 1V voltage according to the 5 th channel of connected light source 1 (voltage is 24V in 1A), thereby making output current 1A of light source driving module 3 be 24V;
(2) STM32F103 of the main control module 2 controls the 6 th channel of DAC108S085 to output 2.4V, and the light source voltage comparison module 4 outputs 3.3V high level after detecting that the light source 1 reaches 24V, and does not reach 24V to output 0V;
(3) STM32F103 of the main control module 2 controls the 7 th channel of DAC108S085 to output 1V of voltage, and the light source current comparison module 5 outputs 3.3V high level after detecting that the current of the light source 1 reaches 1A and does not reach 1A to output 0V;
(4) The main control module 2 rapidly detects the signal input by the trigger input module 6 in an interrupt mode, and the main control module 2 controls the Q9 of the light source driving module 3 to cut off after receiving the effective trigger signal, so that the constant current circuit outputs current to light the light source 1, and controls the Q9 of the light source driving module to be conducted after not receiving the effective trigger signal, so that the constant current circuit does not output current to enable the light source 1 not to be lightened;
(5) The light source voltage comparison module 4 collects the voltage of the light source 1 in real time, compares the voltage with 2.4V set by the main control module 2 in real time, and gives the comparison result to the logic processing module 7 in real time;
(6) The light source current comparison module 5 collects the current of the light source 1 in real time, compares the current with the 1V set by the main control module 2 in real time, and gives the comparison result to the logic processing module 7 in real time;
(7) The logic processing module 7 performs AND operation processing on the result output by the light source voltage comparison module 4 and the result output by the light source current comparison module 5 in real time and then sends the result to the main control module 2;
(8) The main control module 2 rapidly processes the digital signal sent by the logic processing module 7 in an interrupt mode, judges whether the light source is normally turned on or not by combining the signal input by the trigger input module 6, and controls the synchronous trigger output module 8 to output a signal to trigger the camera to acquire pictures if the light source 1 is already turned on; controlling the warning output module 9 to output a warning signal if the light source is not turned on for a prescribed time; the success times and the failure times are counted at the same time, the success times and the failure times are displayed through the display module 10, and the counted data can be read through the communication module 11;
repeating (4) - (8).
It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. A light source controller having a real-time synchronous trigger output or a warning output, the light source controller comprising:
a main control module;
the main control module comprises a microprocessor STM32F103 and a digital-to-analog conversion chip DAC108S085;
a light source;
the light source driving module is respectively and electrically connected with the main control module and the light source and is used for outputting voltage and current to light the light source;
the light source voltage comparison module is respectively and electrically connected with the main control module and the light source driving module and is used for collecting the light source voltage in real time and comparing the light source voltage with the comparison voltage set by the main control module in real time;
the light source voltage comparison module consists of a differential amplification circuit formed by LM258 and a comparison circuit formed by LM 393; the amplification factor K1 of the differential amplification circuit is 0.1, and the voltage at two ends of the light source is attenuated by 10 times after passing through the differential amplification circuit and is respectively and electrically connected with the digital-to-analog conversion chip of the main control module and the light source driving module;
the light source current comparison module is respectively and electrically connected with the main control module and the light source driving module and is used for collecting light source current in real time and comparing the light source current with comparison current set by the main control module in real time;
the light source current comparison module consists of a differential amplification circuit formed by LM258 and a comparison circuit formed by LM 393; the current passes through R80, namely 1 omega, the voltage at two ends of the R80 is current 1, the amplification factor K2 of the differential amplification circuit is 2, and the voltage is amplified by 2 times after passing through the differential amplification circuit and is respectively and electrically connected with a digital-to-analog conversion chip of the main control module and the light source driving module;
the trigger input module is electrically connected with the main control module and is used for transmitting a trigger signal to the main control module;
the logic processing module consists of a logic AND gate 74HC08, is respectively and electrically connected with the main control module, the light source voltage comparison module and the light source current comparison module, and is used for logically processing the result output by the light source voltage comparison module and the result output by the light source current comparison module in real time and then supplying the result to the main control module;
the synchronous triggering output module is electrically connected with the main control module and is used for outputting a signal to trigger the camera to acquire pictures;
the warning output module is electrically connected with the main control module and is used for outputting a warning signal;
the display module is electrically connected with the main control module and used for displaying the success times and the failure times;
and the communication module is electrically connected with the main control module and is used for reading the counted data.
2. A method of implementing a light source controller having a real-time synchronous trigger output or warning output according to claim 1, comprising:
the main control module controls the light source driving module to output corresponding current and voltage to the light source;
the main control module sets a comparison voltage value of the light source voltage comparison module and a comparison current value of the light source current comparison module according to the voltage and the current required by the light source when the light source reaches the required brightness;
the trigger input module gives a trigger signal to the main control module, and the main control module effectively controls whether the light source driving module outputs voltage and current to light the light source according to whether the received trigger signal is received;
the light source voltage comparison module and the light source current comparison module respectively collect light source voltage and light source current in real time, compare the light source voltage with comparison voltage and comparison current set by the main control module in real time, and give comparison results to the logic processing module in real time;
the logic processing module logically processes the result output by the light source voltage comparison module and the result output by the light source current comparison module in real time and then sends the processed result to the main control module;
the main control module analyzes the digital signals sent by the logic processing module and combines the signals input by the trigger input module to judge whether the light source is normally turned on, and if the light source is already turned on, the synchronous trigger output module is controlled to output signals to trigger the camera to acquire pictures; if the light source is not turned on within a specified time, controlling the warning output module to output a warning signal; and the repeated triggering input module inputs a triggering signal, the light source voltage comparison module and the light source current comparison module respectively compare the light source voltage and current in real time, the logic processing module processes the comparison result, and the main control module analyzes the processing result.
3. The method of implementing a light source controller with real-time synchronization trigger output or warning output of claim 2, further comprising: and displaying the counted success times and failure times through a display module.
4. A method of implementing a light source controller having a real-time synchronous trigger output or warning output according to claim 2 or 3, further comprising: and reading data for counting the success times and the failure times through a communication module.
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