CN112058706A - Power-on self-inspection system for DMX lamp - Google Patents
Power-on self-inspection system for DMX lamp Download PDFInfo
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- CN112058706A CN112058706A CN202010813347.3A CN202010813347A CN112058706A CN 112058706 A CN112058706 A CN 112058706A CN 202010813347 A CN202010813347 A CN 202010813347A CN 112058706 A CN112058706 A CN 112058706A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
- B07C5/3422—Sorting according to other particular properties according to optical properties, e.g. colour using video scanning devices, e.g. TV-cameras
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/44—Testing lamps
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The application relates to the technical field of lamp testing, and aims to provide a power-on self-checking system for a DMX lamp, which comprises a lamp detection device, wherein the lamp detection device is connected with a lamp to be detected, and the lamp detection device is also connected with a camera; controlling a lamp detection device to output a DMX signal to a lamp to be detected and driving the lamp to be detected to work; the camera collects working image information of the lamp to be detected and transmits the collected working image information of the lamp to be detected to the lamp detection device; the lamp detection device receives working image information of a lamp to be detected and compares the working image information with an image preset threshold range; and when the received working image information of the lamp to be detected does not accord with the preset image threshold range, the lamp detection device outputs an unqualified electric signal of the current lamp. The method and the device have the effects of improving the missed detection condition of DMX lamp detection and improving the detection efficiency.
Description
Technical Field
The application relates to the technical field of lamp testing, in particular to a power-on self-inspection system for a DMX lamp.
Background
The LED system consists of a plurality of lamp beads. If the brightness of a certain lamp is abnormal, the quality problem of lamp beads can be caused, and even the quality of the whole LED system is unqualified. Therefore, strict inspection is required before shipment.
In the production and inspection processes, the number of samples to be inspected is extremely large, the workload is large, the labor hour and the labor cost are consumed, and the lamp can be detected by adopting a DMX mode.
The DMX512 protocol was first developed by the american theater technology association as a way to control dimmers from consoles using standard digital interfaces, which is an industry standard for data transmission between light controllers and lighting fixtures. The DMX512 adopts a bus parallel connection mode, and after each lamp is assigned with an address code, the lamps are connected in parallel on an output line of the DMX controller.
DMX adopts the parallelly connected mode of bus, is difficult to influence other lamps and lanterns when a certain lamps and lanterns damage.
Every time the DMX controller sends a packet, the DMX controller can form one-time overall control on all controlled channels of the DMX and control one or more functions of the lighting equipment. The DMX receiving end does not do any processing for the signal sent by the DMX controller, and the lamp detects each frame data packet on the bus and reads corresponding data according to the address code thereof. And after receiving the DMX signal, the DMX receiving end converts the DMX signal into an analog signal to drive the LED lamp, and the brightness of the LED lamp is controlled by utilizing PWM. The DMX receiving ends respectively have different codes, so that the speed of signals sent to the LEDs by the DMX receiving ends is different, and the LEDs can be combined to obtain different changing effects so as to observe the lighting condition of the lamp. During the detection process, the lamps are generally observed in a manual visual inspection mode.
Aiming at the related technologies, the inventor thinks that the defects of easy fatigue for a long time, influence on eyesight, missed detection, poor detection effect and low efficiency exist when the lamp is observed in a manual visual inspection mode.
Disclosure of Invention
In order to improve the missed detection condition of DMX lamp detection and improve the detection efficiency, the application provides a DMX lamp power-on self-detection system.
The power-on self-inspection system for the DMX lamp adopts the following technical scheme that:
the power-on self-inspection system of the DMX lamp comprises a lamp detection device, wherein the lamp detection device is connected with a lamp to be detected, and the lamp detection device is also connected with a camera;
controlling the lamp detection device to output a DMX signal to the lamp to be detected and driving the lamp to be detected to work;
the camera collects working image information of the lamp to be detected and transmits the collected working image information of the lamp to be detected to the lamp detection device;
the lamp detection device receives working image information of a lamp to be detected and compares the working image information with an image preset threshold range;
and when the received working image information of the lamp to be detected does not accord with the preset image threshold range, the lamp detection device outputs an unqualified electric signal of the current lamp.
By adopting the technical scheme, the lamp detection device is controlled to drive the lamp to be detected to work so as to carry out test operation; acquiring working image information of a lamp to be detected by means of a camera, transmitting the working image information to a lamp detection device, and comparing the working image information with an image preset threshold range to judge whether the detected lamp is qualified; when the working image information of the lamp to be detected does not accord with the preset image threshold range, the lamp detection device outputs an unqualified electric signal of the current lamp so as to realize the purpose of automatically detecting the unqualified lamp; furthermore, the DMX lamp power-on self-inspection system does not need to observe the lamp through manual visual inspection, the detection effect is good, the condition of missed detection of DMX lamp detection is improved, and the detection efficiency is improved.
Preferably, the lamp detection device is connected with an alarm device, and when the received working image information of the lamp to be detected conforms to the preset threshold range of the image, the lamp detection device acquires the sending time of the DMX signal and the action time of the lamp to be detected and compares the sending time of the DMX signal and the action time of the lamp to be detected with the preset threshold range;
and when the sending time of the DMX signal and the action time of the lamp to be detected accord with the preset threshold range and the received working image information of the lamp to be detected accords with the preset threshold range of the image, the alarm device gives an alarm.
By adopting the technical scheme, when the received working image information of the lamp to be detected is in accordance with the preset threshold range of the image and the sending time of the DMX signal and the action time of the lamp to be detected are in accordance with the preset threshold range, the lamp is detected to be qualified, and at the moment, the alarm device gives an alarm to remind a worker to perform the detection operation of the next lamp to be detected in time.
Preferably, the lamp detection device receives the working image information of the lamp to be detected, and obtains the actual current value of the lamp according to the internal feedback resistor and the voltage at two ends of the detected lamp;
the lamp detection device acquires the actual brightness gray level value of the lamp according to the received working image information of the lamp to be detected;
the lamp detection device compares the obtained actual current value with the actual brightness gray level value and the preset threshold range of the image;
and when the actual current value or the actual brightness gray level value does not accord with the preset threshold range of the image, the lamp detection device outputs the unqualified electric signal of the current lamp.
By adopting the technical scheme, the lamp detection device receives the working image information of the lamp to be detected, and obtains the actual current value and the actual brightness gray level value of the lamp according to the internal feedback resistor and the voltage at the two ends of the detection lamp, so as to be used as an index for measuring the quality condition of a product; when the index related to the product quality does not accord with the preset threshold range of the image, judging that the product is unqualified; and the judgment basis of the power-on self-checking system of the DMX lamp is more accurate, and the accuracy of the lamp detection result is improved.
Preferably, the system also comprises a PC terminal and a program module running on the PC terminal;
when the number of the lamps to be detected is larger than a preset value, the PC terminal operates the program module, the program module controls the lamp detection device to output DMX signals to the lamps to be detected, and lamp unqualified electric signals output by the lamp detection device are automatically acquired.
By adopting the technical scheme, when the number of the lamps to be detected is large, the program module is operated at the PC terminal, the lamp detection device is controlled by the program module to drive the lamps to be detected, and meanwhile, the program module automatically acquires the detection information of the lamp detection device, so that the detection operation of the power-on self-detection system on the DMX lamp is more convenient, and meanwhile, the detection information of the lamps is conveniently analyzed and judged.
Preferably, the program module performs statistics and summarization on the collected lamp unqualified electric signals.
Through adopting above-mentioned technical scheme, the unqualified signal of telecommunication of lamps and lanterns that the program module will gather statistics gathers to the detection information that the staff directly perceived visually acquireed lamps and lanterns is favorable to the staff to know the condition that detects lamps and lanterns fast.
Preferably, when the number of the collected lamp unqualified electric signals is 0, the program module outputs a product qualified electric signal.
By adopting the technical scheme, when the quantity of the collected unqualified electric signals of the lamp is 0, the program module outputs the qualified electric signals of the product to remind the staff that the quality of the lamp is qualified, so that the staff can conveniently take the next operation.
Preferably, the lamp detection device comprises a touch screen, and when the lamp detection device outputs an electric signal that the current lamp is unqualified, error code information including the specific position of the unqualified lamp is displayed on the touch screen.
By adopting the technical scheme, when the lamp detection device outputs the unqualified electric signal of the current lamp, the error code information containing the specific position of the unqualified lamp is displayed on the touch screen, so that a worker can visually acquire the position information of the unqualified lamp and take measures in time, and the loss is reduced.
Preferably, the lamp detection device comprises a first wireless transceiver module, the PC terminal is connected to a second wireless transceiver module, and the first wireless transceiver module communicates with the second wireless transceiver module to transmit and store the received working image information of the lamp to be detected in the program module.
By adopting the technical scheme, the first wireless transceiving module of the lamp detection device is communicated with the second wireless transceiving module of the PC terminal, and the working image information of the lamp to be detected is transmitted into the program module of the PC terminal, so that the communication between the PC terminal and the lamp detection device is free from wiring, the remote information communication between the PC terminal and the lamp detection device is realized, and the operation is convenient.
In summary, the present application includes at least one of the following beneficial technical effects:
the DMX lamp power-on self-inspection system judges the quality of a lamp by comparing the working image information of the lamp to be detected with a preset image threshold range, does not need to observe the lamp in a manual visual inspection mode, has good detection effect, improves the condition of missed detection of DMX lamp detection, and improves the detection efficiency;
2. when the received working image information of the lamp to be detected is in accordance with the preset threshold range of the image and the sending time of the DMX signal and the action time of the lamp to be detected are in accordance with the preset threshold range, judging that the lamp to be detected is qualified, and enabling an alarm device to give an alarm to remind a worker to perform the detection operation of the next lamp to be detected in time;
3. obtaining indexes related to the product quality of the lamp, comparing the indexes with a preset image threshold range, and judging the quality of the product, so that the judgment basis of the power-on self-inspection system of the DMX lamp is more accurate, and the accuracy of the lamp detection result is improved;
4. when the number of the lamps to be detected is large, the program module of the PC terminal controls the lamp detection device to drive the lamps to be detected to work, and meanwhile, detection information of the lamp detection device is automatically collected, so that the detection operation of the power-on self-detection system of the DMX lamp is more convenient, and the detection information of the lamps is also convenient to analyze and judge;
5. the program module counts and summarizes the acquired unqualified lamp electric signals so that a worker can visually and vividly acquire the detection information of the lamp, the worker can quickly know the condition of the detected lamp, and the qualified product electric signals are output when the product is qualified so as to remind the worker to detect the qualified quality of the lamp and be convenient for the worker to take the next operation;
6. when the product is unqualified, error code information containing the specific position of the unqualified lamp is displayed on the touch screen, so that a worker can visually acquire the position information of the unqualified lamp and take measures in time, and loss is reduced;
and 7, the PC terminal and the lamp detection device are communicated with each other through the first wireless transceiver module and the second wireless transceiver module to realize remote communication, wiring is not needed, and the operation is convenient.
Drawings
Fig. 1 is a block diagram of a power-on self-test system of a DMX lamp according to an embodiment of the present application.
Fig. 2 is a flowchart of the DMX lamp power-on self-test system detecting a small number of lamps.
Fig. 3 is a flowchart of a DMX lamp power-on self-test system for remotely detecting multiple lamps.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a DMX lamp power-on self-inspection system. Referring to fig. 1, the system includes a lamp detection device, a PC terminal, and a program module running on the PC terminal. The lamp detection device comprises a controller, a key, a touch screen and a power module, wherein the key, the touch screen and the power module are connected to the controller, a network interface and a lamp interface are arranged on the controller, and the lamp interface of the controller is connected with a plurality of lamps to be detected.
In this embodiment, the output ends of the touch screen, the keys and the power module are electrically connected with the input end of the lamp detection device through cables.
The key inputs a trigger signal to the controller, and the controller performs parameter setting in response to the input signal of the key to control the lamp to work.
The touch screen is used for displaying data information for the controller. In this embodiment, the touch screen may be an LCD touch screen.
The power module is used for supplying power to the lamp detection device and the lamp to be detected.
In this embodiment, the controller may adopt a remote micro ARM rk3399, the lamp interface generates a DMX signal, and the controller extends the camera.
The lamp detection device further comprises a first wireless transceiving module connected to the controller, and the first wireless transceiving module is in wireless communication connection with the controller.
The controller is further connected with a camera, the camera is used for carrying out image acquisition on the working information of the lamp and transmitting the image acquisition to the controller, and the controller analyzes and judges the acquired working image information of the lamp.
The PC terminal is connected with a second wireless transceiver module, and the second wireless transceiver module is in wired connection with the PC terminal. In this embodiment, the second wireless transceiver module is connected to the PC terminal through a USB data line.
The controller is communicated with the second wireless transceiver module of the PC terminal through the first wireless transceiver module, the detection data information of the lamp detection device is transmitted to the PC terminal, the storage and information gathering statistics are carried out in the program module on the PC terminal, the communication between the PC terminal and the lamp detection device does not need wiring, and the operation is convenient.
When the distance between the PC terminal and the lamp detection device is short, the network interface of the controller is in serial communication connection with the PC terminal, and short-distance communication between the PC terminal and the lamp detection device is achieved.
The lamp detection device is further connected with an alarm device, and in the embodiment, the alarm device can be a buzzer.
Referring to fig. 2, when the number of the lamps to be detected is small, parameter information is set through the keys and is input into the controller of the lamp detection device. The parameter information comprises the type of the lamp, a transmission use protocol, a detection mode, the detection times and the function of starting the local data recording.
And then connecting the lamps to be detected with the lamp interfaces of the controller, and automatically detecting whether the lamps are connected by the controller.
When the controller detects that the lamp is connected, the controller generates a DMX signal from the lamp interface according to the set parameter information such as the detection mode and the like, and inputs the DMX signal into the lamp to be detected.
After receiving the DMX signal, the lamp to be detected converts the digital signal of the DMX data into an analog voltage signal to drive the lamp to work; at the moment, the camera acquires images of the real-time working condition of the lamp and transmits image data information to the controller in real time.
And the controller compares the received working image information of the lamp to be detected with the preset threshold range of the image.
And when the received working image information of the lamp to be detected does not accord with the preset image threshold range, the lamp detection device outputs an unqualified electric signal of the current lamp.
Specifically, the controller receives the working image information of the lamp to be detected, and the actual current value of the current lamp is obtained according to the feedback resistor inside the controller and the voltage values at two ends of the detected lamp. And the controller receives the working image information of the lamp to be detected and acquires the real-time brightness gray level value of the current lamp.
And the lamp detection device compares the obtained actual current value with the actual brightness gray level value and the preset threshold range of the image to judge whether the color display of the current lamp is normal.
And when the actual current value or the actual brightness gray level value does not accord with the preset threshold range of the image, the lamp detection device outputs the unqualified electric signal of the current lamp.
When the actual current value, the actual brightness gray level value and the image preset threshold range are in accordance, namely the working image information of the lamp to be detected is in accordance with the image preset threshold range, the lamp detection device obtains the sending time of the DMX signal and the action time of the lamp to be detected and compares the sending time of the DMX signal and the action time of the lamp to be detected with the preset threshold range to judge whether the reaction time of the current lamp is in accordance with the preset threshold range. When the sending time of the DMX signal and the action time of the lamp to be detected accord with the preset threshold range, namely the detection result of the current lamp is qualified, the controller outputs an action signal to the alarm device, controls the alarm device to alarm, and reminds a worker to timely perform detection operation on the next lamp or the next batch of lamps to be detected.
Referring to fig. 3, when the number of the lamps to be detected is large, the lamps to be detected cooperate with the plurality of lamp detection devices to perform detection operation, the PC terminal runs the program module, performs parameter setting on the controller through the program module, and inputs parameter information into the controller of the lamp detection devices, so that the controller drives the lamps to be detected to work.
And the program module controls the lamp detection device to output the DMX signal to the lamp to be detected and automatically acquires the lamp unqualified electric signal output by the lamp detection device.
The program module counts and summarizes the collected unqualified electric signals of the lamp, and in the embodiment, the program module sorts and summarizes the data information into an excel table form.
And each lamp to be detected generates detection information, wherein the detection information is 1 when the detection information is qualified, and the detection information is 0 when the detection information is not qualified.
When the quantity of the collected lamp unqualified electric signals is 0, namely the obtained lamp detection data information is 1, the program module controls the lamp detection device to output product qualified electric signals, and meanwhile, the alarm device gives an alarm to remind a worker to timely perform detection operation on the next batch of lamps to be detected.
When the number of the collected unqualified lamp electric signals is larger than or equal to 1, namely the color of the current lamp is displayed abnormally or the reaction time of the current lamp does not accord with the preset condition, the program module controls the lamp detection device to output the unqualified product electric signals, and meanwhile, error code information containing the specific position of the unqualified lamp is displayed on the touch screen. For example, the error code is (6, 128), which represents that the lamps in group 6 and point 128 are abnormal.
The staff can look over the detection information of lamps and lanterns test procedure on the controller, or export the detection information post processing of lamps and lanterns through the USB flash disk.
The beneficial effects of the power-on self-inspection system of the DMX lamp of the embodiment of the application are as follows:
1. the lamp detection device completes the conventional light setting signal output, can automatically generate different preset test light effects, synchronously analyzes whether the LED light test effect is consistent with the preset setting effect or not by means of the camera, achieves the preset effect requirement, does not need to observe the lamp in a manual visual inspection mode, has good detection effect, improves the condition of missed detection of DMX lamp detection, and improves the detection efficiency;
2. when the received working image information of the lamp to be detected is in accordance with the preset threshold range of the image and the sending time of the DMX signal and the action time of the lamp to be detected are in accordance with the preset threshold range, judging that the lamp to be detected is qualified, and enabling an alarm device to give an alarm to remind a worker to perform the detection operation of the next lamp to be detected in time;
3. obtaining indexes related to the product quality of the lamp, comparing the indexes with a preset image threshold range, and judging the quality of the product, so that the judgment basis of the power-on self-inspection system of the DMX lamp is more accurate, and the accuracy of the lamp detection result is improved;
4. when the number of the lamps to be detected is large, the program module of the PC terminal controls the lamp detection device to drive the lamps to be detected to work, and meanwhile, detection information of the lamp detection device is automatically acquired, so that detection operation of the power-on self-detection system of the DMX lamp can be remotely performed, the operation is more convenient, and the detection information of the lamps is also conveniently analyzed and judged;
5. the program module counts and summarizes the acquired unqualified lamp electric signals so that a worker can visually and vividly acquire the detection information of the lamp, the worker can quickly know the condition of the detected lamp, and the qualified product electric signals are output when the product is qualified so as to remind the worker to detect the qualified quality of the lamp and be convenient for the worker to take the next operation;
6. when the product is unqualified, the touch screen displays error code information containing the specific position of the unqualified lamp, so that a worker can visually acquire the position information of the unqualified lamp and take measures in time, and loss is reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
- The power-on self-inspection system for the DMX lamp comprises a lamp detection device, wherein the lamp detection device is connected with a lamp to be detected, and the power-on self-inspection system is characterized in that: the lamp detection device is also connected with a camera;controlling the lamp detection device to output a DMX signal to the lamp to be detected and driving the lamp to be detected to work;the camera collects working image information of the lamp to be detected and transmits the collected working image information of the lamp to be detected to the lamp detection device;the lamp detection device receives working image information of a lamp to be detected and compares the working image information with an image preset threshold range;and when the received working image information of the lamp to be detected does not accord with the preset image threshold range, the lamp detection device outputs an unqualified electric signal of the current lamp.
- 2. The DMX lamp power-on self-test system of claim 1, wherein: the lamp detection device is connected with an alarm device, and when the received working image information of the lamp to be detected conforms to the preset threshold range of the image, the lamp detection device acquires the sending time of the DMX signal and the action time of the lamp to be detected and compares the sending time of the DMX signal and the action time of the lamp to be detected with the preset threshold range;and when the sending time of the DMX signal and the action time of the lamp to be detected accord with the preset threshold range and the received working image information of the lamp to be detected accords with the preset threshold range of the image, the alarm device gives an alarm.
- 3. The DMX lamp power-on self-test system of claim 1, wherein: the lamp detection device receives the working image information of the lamp to be detected, and obtains the actual current value of the lamp according to the internal feedback resistance and the voltage at two ends of the lamp to be detected;the lamp detection device acquires the actual brightness gray level value of the lamp according to the received working image information of the lamp to be detected;the lamp detection device compares the obtained actual current value with the actual brightness gray level value and the preset threshold range of the image;and when the actual current value or the actual brightness gray level value does not accord with the preset threshold range of the image, the lamp detection device outputs the unqualified electric signal of the current lamp.
- 4. The DMX lamp power-on self-test system of claim 1, wherein: the system also comprises a PC terminal and a program module running on the PC terminal;when the number of the lamps to be detected is larger than a preset value, the PC terminal operates the program module, the program module controls the lamp detection device to output DMX signals to the lamps to be detected, and lamp unqualified electric signals output by the lamp detection device are automatically acquired.
- 5. The DMX lamp power-on self-test system of claim 4, wherein: and the program module counts and summarizes the collected unqualified electric signals of the lamp.
- 6. The DMX lamp power-on self-test system of claim 5, wherein: and when the number of the collected unqualified electric signals of the lamp is 0, the program module outputs qualified electric signals of the product.
- 7. The DMX lamp power-on self-test system of claim 4, wherein: the lamp detection device comprises a touch screen, and when the lamp detection device outputs an unqualified electric signal of the current lamp, error code information containing the specific position of the unqualified lamp is displayed on the touch screen.
- 8. The DMX lamp power-on self-test system of claim 4, wherein: the lamp detection device comprises a first wireless transceiving module, the PC terminal is connected with a second wireless transceiving module, the first wireless transceiving module is communicated with the second wireless transceiving module, and received lamp working image information to be detected is transmitted into the program module and stored.
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CN112893186A (en) * | 2021-01-13 | 2021-06-04 | 山西能源学院 | Method and system for quickly visually detecting power-on of LED lamp filament |
CN114082678A (en) * | 2021-10-12 | 2022-02-25 | 惠阳帝宇工业有限公司 | Emergency lamp testing method and emergency lamp |
CN118577526A (en) * | 2024-06-11 | 2024-09-03 | 深圳润元光电有限公司 | LED lamp detection device and method based on intelligent control |
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