CN110726885A - Automatic detection device and detection method for signal lightning protector - Google Patents
Automatic detection device and detection method for signal lightning protector Download PDFInfo
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- CN110726885A CN110726885A CN201810776375.5A CN201810776375A CN110726885A CN 110726885 A CN110726885 A CN 110726885A CN 201810776375 A CN201810776375 A CN 201810776375A CN 110726885 A CN110726885 A CN 110726885A
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Abstract
The invention discloses a signal lightning protector automatic detection device and a detection method, wherein the device comprises a single chip microcomputer, an input interface, an output interface, an external test power supply interface, a grounding interface, a working state indicator lamp, an on-off state indicator lamp, a control key, a nixie tube display module, a power supply interface, a test line-to-ground voltage relay, a test on-off relay, a relay driver and an AD sampling circuit; the power interface, the relay driver, the AD sampling circuit, the buzzer, the control key and the nixie tube display module are all connected with the single chip microcomputer. The device can carry out input and output's break-make test, line-to-line voltage to signal lightning protection module fast and detect, and the line-to-ground voltage detects, effectively improves detection efficiency and detects the precision. By adopting the invention, the complicated detection flow of the signal lightning protector can be greatly simplified, and the energy of operators is saved.
Description
Technical Field
The invention relates to the technical field of automatic detection of signal lightning protection devices.
Background
At present, in the detection of a signal lightning protection device module, each enterprise basically adopts a manual detection mode; in the future, an automatic detection mode is a trend, and detection equipment is indispensable in automatic detection; the automatic detection device for the signal lightning protection device is a platform for module automatic detection, and the detection efficiency and the detection quality of the signal lightning protection device are directly influenced by the simplicity and convenience in operation and the measurement accuracy of the automatic detection device. The automatic detection method of the signal lightning protection device is not popularized and applied nationwide, so the research and development and the production of the detection equipment are also blank fields; the design of the detection device is directly related to the detection efficiency and the detection quality.
In the prior art, the utility model with the application number of CN201420263491.4 discloses a detection device for signal lightning protection device faults, wherein 1 and 2-pole input ends of the lightning protection device are both connected with a lightning protection element, one end of a first resistance element is connected with the 1-pole input end, and the other end is connected with a double-row straight pin header and a 1-pole output end; one end of the second resistance element is connected with the 2-pole input end, and the other end of the second resistance element is connected with the double-row straight pin header and the 2-pole output end; one end of the voltage limiting element is connected with the double-row straight pin header, the other end of the voltage limiting element is connected with the lightning protection element and one end of the single-row straight pin header, and the other end of the single-row straight pin header is grounded; one end of the first electronic relay is connected with one end of the first resistance element, and the other end of the first electronic relay is connected with the 1-pole output end; one end of the second electronic relay is connected with one end of the second resistance element, and the other end of the second electronic relay is connected with the 2-pole output end; the first electronic relay and the second electronic relay are both connected with the data acquisition box. The utility model with the application number of CN201720588033.1 discloses a lightning protection device remote signaling output detection device, which comprises a processing unit with at least two level detection ports, wherein the two level detection ports of the processing unit are respectively electrically connected with a normally open contact and a normally closed contact of a lightning protection device remote signaling output circuit so as to obtain level signals of the normally open contact and the normally closed contact; the lightning protection device also comprises a storage module which is electrically connected with or integrated with the processing unit and stores the truth table of the level signal and the lightning protection device remote signaling output state so as to judge the lightning protection device remote signaling output state according to the level signal. The above prior art needs further improvement.
Disclosure of Invention
The invention aims to provide an automatic detection device and a detection method for a signal lightning protector, which can improve the detection efficiency and the detection accuracy.
The technical scheme of the invention is as follows: an automatic detection device for a signal lightning protector comprises a single chip microcomputer, an AD sampling circuit, a relay driver, a power interface, a test on-off relay, a test line-to-line and line-to-ground voltage relay, an external test power interface I and an external test power interface II; the AD sampling circuit, the relay driver and the power interface are all connected with the single chip microcomputer, the relay driver is connected with the test on-off relay, the test line-to-line and line-to-ground voltage relay, and the external test power interface I and the external test power interface II are all connected with the single chip microcomputer through the AD sampling circuit.
The automatic detection device for the signal lightning protection device further comprises an input interface, an output interface and a grounding interface.
The automatic detection device for the signal lightning protection device further comprises a buzzer and a nixie tube display module, wherein the buzzer and the nixie tube display module are connected with the single chip microcomputer.
The automatic detection device for the signal lightning protector also comprises a box body, wherein an input interface, an output interface and a grounding interface are all arranged in front of the box body; the external test power supply interface I, the external test power supply interface II and the power supply interface are all arranged at the back of the box body; the test on-off relay, the test line-to-line and line-to-ground voltage relay, the buzzer, the nixie tube display module, the single chip microcomputer, the relay drive circuit and the AD sampling circuit are all arranged in the box body.
The automatic detection device for the signal lightning protector further comprises a control key used for controlling the input voltage value from the outside.
When the on-off is measured, 8 channels of the signal lightning protector are connected with relays for testing the on-off, all 8 channels of the signal lightning protector are started to test the on-off relays under the control of a single chip microcomputer, the input ends of the 8 channels of the signal lightning protector are sequentially and independently powered, and meanwhile, the single chip microcomputer AD is used for collecting all voltages of the 8 channels at one time; and judging the collected voltage, and if the corresponding power supply channel has voltage and other channels have no voltage, judging the voltage is normal.
A relay connected with the single chip microcomputer and a relay driver are arranged; after the on-off measurement is finished, the line-to-line voltage detection work is carried out on the signal lightning protector; when the line-to-line voltage of the signal lightning protector is detected, all relays powered by the single chip microcomputer are disconnected, the relays of 1 and 2 paths of the signal lightning protector are firstly driven by the relays to be switched on, and whether the line-to-line voltage is within a normal range or not is judged by collecting the voltage of a corresponding output port; after the lightning arrester is qualified, relays connected with 1 and 2 paths of the signal lightning arrester are disconnected, relays connected with 3 and 6 paths of the signal lightning arrester are opened for detection, relays connected with 3 and 6 paths of the signal lightning arrester are disconnected after the lightning arrester is qualified, relays connected with 4 and 5 paths of the signal lightning arrester are opened for detection, relays connected with 4 and 5 paths of the signal lightning arrester are disconnected after the lightning arrester is qualified, and relays connected with 7 and 8 paths of the signal lightning arrester are opened for detection; and if the four groups of voltages are qualified, detecting the voltage of the line to ground of the signal lightning protector.
A reverse relay connected with the single chip microcomputer is arranged; firstly, after a relay to the ground is opened, the corresponding relay of each path is opened in sequence, and an AD sampling circuit is utilized to collect voltage; if the measured voltages of the 1, 3, 5 and 7 paths are all normal values, the reverse relay is opened to measure the voltages of the 2, 4, 6 and 8 paths, and if no substandard part exists, the judgment is qualified.
The signal lightning protection device automatic detection device is adopted for detection, and the signal lightning protection device is directly connected with the signal lightning protection device automatic detection device; connecting the input end, the output end and the PE port of the signal lightning protector with an output interface, an input interface and a grounding interface of the automatic detection device of the signal lightning protector respectively; the signal lightning protection device provided with the TVS tube and the discharge tube is automatically detected, an alarm is given to unqualified products, and a worker is reminded to pick out defective products;
after the signal lightning protection device is connected with the automatic detection device of the signal lightning protection device, detection is carried out after the starting switch is pressed; the first step is to detect the on-off of 8-path input and output of a signal lightning protector, a single chip microcomputer is adopted to control 5V voltage to an input end, and meanwhile, voltage is collected at an output end to realize measurement; the second step is to detect the voltage between lines of the lightning protection device 8: 1-2, 3-6, 4-5 and 7-8 paths of voltage; the third step is to detect the voltage of each path of 8 paths to the ground; if the three steps are qualified, the automatic detection device of the signal lightning protection device is qualified through acousto-optic display, and if any step is unqualified, the buzzer can be used for directly alarming.
The invention provides guarantee for the automation and scale inspection of the signal surge protector and can solve the problem caused by the complicated manual operation of the signal lightning protector. The detection of the original signal lightning protector has four processes and twenty-more operations, and by adopting the invention, the complicated detection flow of the signal lightning protector can be greatly simplified, the energy of operators is saved, meanwhile, the automatic detection alarm function is provided, and the error rate of the operators is greatly reduced; the device can carry out input and output's break-make test, line-to-line voltage detection (TVS pipe performance test) to signal lightning protection module fast, and the line-to-line voltage detects (the direct current breakdown voltage of discharge tube), effectively improves detection efficiency and detects the precision.
Drawings
FIG. 1 is a schematic layout of an automatic detection device for a signal lightning arrester according to the present invention;
FIG. 2 is a schematic top view of the housing of the present invention;
FIG. 3 is a right side view of the housing of the present invention;
FIG. 4 is a schematic front view of the housing of the present invention;
FIG. 5 is a rear view of the housing of the present invention;
FIG. 6 is a perspective view of the housing of the present invention;
FIG. 7 is a flow chart of signal lightning protector detection;
in the figure: 1. the device comprises an input interface, 2, a grounding interface, 3, an output interface, 4, a control key, 5, a buzzer, 6, a working state indicator lamp, 7, a nixie tube display module, 8, a single chip microcomputer, 9, a crystal oscillator, 10, an AD sampling circuit, 11, a relay driver, 12, a power interface, 13, a test line-to-ground voltage relay, 14, a first external test power interface, 15, an AD on-off state indicator lamp, 16, a second external test power interface, 17 and a test on-off relay.
Detailed Description
Referring to fig. 1 to 6, an automatic detection device for a signal lightning protection device includes a box, an input interface 1, a ground interface 2, an output interface 3, a control button 4, a buzzer 5, a working state indicator 6, a nixie tube display module 7, a single chip microcomputer 8, a crystal oscillator 9, an AD sampling circuit 10, a relay driver 11, a power interface 12, a test line-to-line and line-to-ground voltage relay 13, an external test power interface one 14, an AD on-off state indicator 15, an external test power interface two 16, and a test on-off relay 17. The power interface, the buzzer, the nixie tube display module, the relay drive and the AD sampling circuit 3 are all connected with the single chip microcomputer, the input interface 1, the grounding interface 2 and the output interface 3 are used for being connected with the signal lightning protector, the relay drive is connected with the test line-to-ground voltage relay and the test on-off relay between the test lines, and the external test power interface I and the external test power interface II are connected with the single chip microcomputer through the AD sampling circuit.
The INPUT Interface (INPUT), the OUTPUT interface (OUTPUT) and the grounding interface (PE) are all arranged in front of the box body. The external test power supply interface I, the external test power supply interface II and the power supply interface (comprising V and GND) are all arranged at the back of the box body. The test line-to-line and line-to-ground voltage relay, the test on-off relay, the buzzer, the nixie tube display module, the single chip microcomputer, the crystal oscillator, the relay drive circuit and the AD sampling circuit are all arranged in the box body. The start key is arranged on the right side of the box body.
The output interface and the input interface are respectively connected with the input end and the output end of the signal lightning protector and are switched in a network cable mode. The grounding interface is connected with the grounding end PE of the signal lightning protector, so that the equipment (the signal lightning protector automatic detection device) and the lightning protector are grounded together. The first external test power interface and the second external test power interface are used for receiving voltage required by external test. Vin + and Vin-are connected with the positive electrode and the negative electrode of the lightning protection element tester. The power interface is a power supply interface of the equipment and is connected with a power supply.
The automatic detection device of the signal lightning protection device can control and input the accessed voltage value from the outside through the control key 4.
The test on-off relay is used for isolating input and output of each path and measuring on-off. The inter-test line and line-to-ground voltage relay serves as a relay for isolating the inter-test line voltage from the line-to-ground voltage. The buzzer alarms when a failure condition is detected. The single chip microcomputer is a main control chip PIC16F 1947. The relay driver is a relay driver chip. Eight pairs of test on-off relays (used for correspondingly connecting the input end and the output end of the 8-path channel of the signal lightning protector through the output interface and the input interface respectively) and eight test line-to-line and line-to-ground voltage relays (used for correspondingly connecting the 8-path channel of the signal lightning protector through the output interface or the input interface respectively) are arranged. Accordingly, an AD on/off status indicator light 15 is connected to each lane.
The automatic detection device for the signal lightning protection device uses the control of the single chip microcomputer to the relay and the AD acquisition combination to realize the test of performance data of the signal lightning protection device, and simultaneously reduces the operation of inspection personnel through the judgment of the single chip microcomputer and the function of data inspection.
Referring to fig. 7, after the signal lightning protection device starts to work, the register is initialized, and the start key is pressed to start on-off detection (according to actual conditions, if necessary, the start key is repeatedly pressed); when the on-off is measured, the singlechip is used for controlling 8 input ends of the signal lightning protector to sequentially and independently supply power, and simultaneously the singlechip AD is used for collecting all 8 voltages at one time; judging the collected voltage, if the channel corresponding to power supply has voltage and other channels do not, the channel corresponding to power supply is normal (conducted); the above operations are performed for 8 times to determine that all the channel inputs and outputs are conducted without short circuit. If not all the switches are on, the buzzer gives an alarm. And after the 8-path channel detection result is that all channels are switched on, the on-off measurement is finished.
And after all the detection results are conducted, detecting the line-to-line voltage. When the line-to-line voltage is measured, all relays powered by the single chip microcomputer are disconnected, the relays controlling the 1 and 2 paths are firstly driven by the relays to be switched on, and whether the line-to-line voltage is in a normal range or not is judged by collecting the voltage of the corresponding port. And after the test result is qualified, the relays 1 and 2 are switched off, the relays 3 and 6 are switched on, and the detection is carried out on all the channels by analogy. 8V plus or minus 25% is normal, if the line-to-line voltage does not meet the standard, the buzzer gives an alarm. If the four groups of line-to-line voltages are qualified, the voltage between the line and the ground is measured.
After the relay to the ground is opened, the corresponding relay of each path is opened in sequence, and the AD is used for collecting voltage. 75V plus or minus 25% is normal, if eight measured voltage is normal value, two reverse relays connected with the single chip microcomputer are opened to measure the voltage again, and if the line ground voltage is not in accordance with the standard, the buzzer gives an alarm. If there is no abnormality, the product is determined to be a non-defective product. The signal lightning protection device automatic detection device displays a green light.
Therefore, the automatic detection device for the signal lightning protection device needs to achieve the following points during design:
1. the detection equipment (the automatic detection device of the signal lightning protector) is provided with an input network cable and an output network cable which can fix the signal lightning protector when being connected;
2. the detection equipment can use the control key to control and input the accessed voltage value from the outside;
3. the detection equipment can detect the on-off of each path of input and output of the signal lightning protector;
4. the detection equipment can measure the voltage difference between lines among the signal lightning protection devices 1-2, 3-6, 4-5 and 7-8 and judge whether the voltage difference is in a qualified range;
5. the detection equipment can detect the voltage between each path of the eight paths and the ground and judge whether the voltage is in a qualified range;
once one of the above standards is not met, the standard is judged to be unqualified, and audible and visual alarm is carried out.
An on-off detection module capable of realizing the on-off detection function, a line-to-line voltage detection module capable of realizing the line-to-line voltage detection function and a line-to-ground voltage detection module capable of realizing the line-to-ground voltage detection function can be arranged in the automatic signal lightning protector detection device or the single chip microcomputer, and corresponding programs are installed to realize the automatic detection function.
The invention relates to an automatic detection device of a signal lightning protector; the signal lightning protection device (MG-D and similar models) provided with the TVS tube and the discharge tube can be automatically inspected, unqualified products are alarmed, and workers are reminded to pick out defective products, so that the signal lightning protection device can be conveniently and effectively inspected; the signal lightning protector can be directly connected with the automatic detection device of the signal lightning protector; the input end, the output end and the PE port of the signal lightning protector are respectively connected with the output interface, the input interface and the grounding interface of the automatic detection device of the signal lightning protector.
After the signal lightning protection device is connected with the automatic detection device of the signal lightning protection device, the following detection is automatic detection after the starting switch is pressed. The first step is to detect the on-off of 8 paths of input and output of the lightning protection device, 5V voltage is controlled to an input end by a chip (single chip microcomputer), and meanwhile, the voltage is collected at an output end to realize measurement. The second step is to detect the voltage between lines (1-2, 3-6, 4-5, 7-8 lines) of the lightning protector 8. The third step is to detect the voltage of each path of the 8 paths to the ground (actually measuring the breakdown voltage of the discharge tube). And if the three steps are qualified, the equipment is qualified through acousto-optic display. If any step is unqualified, the detection process is directly picked out for alarming.
The invention relates to the field of automatic inspection of signal lightning protection devices, and provides guarantee for automatic and large-scale inspection of signal surge protection devices. The equipment can greatly simplify the complicated detection flow of the signal lightning protector, save the energy of operators, provide an automatic detection alarm function and greatly reduce the error rate of the operators; the device can carry out input and output's break-make test, line-to-line voltage (TVS pipe performance) to signal lightning protection module fast and detect, and the line-to-line voltage (the breakdown voltage of discharge tube) detects, effectively improves detection efficiency.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. An automatic detection device for a signal lightning protector is characterized by comprising a single chip microcomputer, an AD sampling circuit, a relay driver, a power interface, a test on-off relay, a test line-to-line and line-to-ground voltage relay, an external test power interface I and an external test power interface II; the AD sampling circuit, the relay driver and the power interface are all connected with the single chip microcomputer, the relay driver is connected with the test on-off relay, the test line-to-line and line-to-ground voltage relay, and the external test power interface I and the external test power interface II are all connected with the single chip microcomputer through the AD sampling circuit.
2. The automatic detection device for the signal lightning protector according to claim 1, further comprising an input interface, an output interface, and a ground interface.
3. The automatic detection device for the signal lightning protection device according to claim 2, further comprising a buzzer and a nixie tube display module, wherein the buzzer and the nixie tube display module are both connected with the single chip microcomputer.
4. The automatic detection device for the signal lightning protector according to claim 3, characterized by further comprising a box body, wherein the input interface, the output interface and the grounding interface are all arranged in front of the box body; the external test power supply interface I, the external test power supply interface II and the power supply interface are all arranged at the back of the box body; the test on-off relay, the test line-to-line and line-to-ground voltage relay, the buzzer, the nixie tube display module, the single chip microcomputer, the relay drive circuit and the AD sampling circuit are all arranged in the box body.
5. The automatic detection device for the signal lightning protector according to claim 1, further comprising a control key for externally controlling the value of the input voltage.
6. A signal lightning protection device automatic detection method is characterized in that 8 paths of channels of a signal lightning protection device are connected with relays for testing on-off when on-off is measured, all 8 paths of channels are started to test the on-off relays under the control of a single chip microcomputer, the input ends of the 8 paths of channels of the signal lightning protection device are sequentially and independently powered, and meanwhile, the single chip microcomputer AD is used for collecting all voltages of the 8 paths of channels at one time; and judging the collected voltage, and if the corresponding power supply channel has voltage and other channels have no voltage, determining that the voltage is normal.
7. The automatic detection method for the signal lightning protector according to claim 6, characterized in that a relay connected with a single chip microcomputer and a relay driver are arranged; after the on-off measurement is finished, the line-to-line voltage detection work is carried out on the signal lightning protector; when the line-to-line voltage of the signal lightning protector is detected, all relays powered by the single chip microcomputer are disconnected, the relays of 1 and 2 paths of the signal lightning protector are firstly driven by the relays to be switched on, and whether the line-to-line voltage is within a normal range or not is judged by collecting the voltage of a corresponding output port; after the lightning arrester is qualified, relays connected with 1 and 2 paths of the signal lightning arrester are disconnected, relays connected with 3 and 6 paths of the signal lightning arrester are opened for detection, relays connected with 3 and 6 paths of the signal lightning arrester are disconnected after the lightning arrester is qualified, relays connected with 4 and 5 paths of the signal lightning arrester are opened for detection, relays connected with 4 and 5 paths of the signal lightning arrester are disconnected after the lightning arrester is qualified, and relays connected with 7 and 8 paths of the signal lightning arrester are opened for detection; and if the four groups of voltages are qualified, detecting the voltage of the line to ground of the signal lightning protector.
8. The automatic detection method for the signal lightning protector according to claim 7, characterized in that a reverse relay connected with a singlechip is arranged; firstly, after a relay to the ground is opened, the corresponding relay of each path is opened in sequence, and an AD sampling circuit is utilized to collect voltage; if the measured voltages of the 1, 3, 5 and 7 paths are all normal values, the reverse relay is opened to measure the voltages of the 2, 4, 6 and 8 paths, and if no substandard part exists, the judgment is qualified.
9. The automatic detection method for the signal lightning protection device according to claim 6, which is characterized in that the automatic detection device for the signal lightning protection device according to claim 1 is adopted for detection, and the signal lightning protection device is directly connected with the automatic detection device for the signal lightning protection device; connecting the input end, the output end and the PE port of the signal lightning protector with an output interface, an input interface and a grounding interface of the automatic detection device of the signal lightning protector respectively; the signal lightning protection device provided with the TVS tube and the discharge tube is automatically detected, an alarm is given to unqualified products, and a worker is reminded to pick out defective products;
after the signal lightning protection device is connected with the automatic detection device of the signal lightning protection device, detection is carried out after the starting switch is pressed; the first step is to detect the on-off of 8-path input and output of a signal lightning protector, a single chip microcomputer is adopted to control 5V voltage to an input end, and meanwhile, voltage is collected at an output end to realize measurement; the second step is to detect the voltage between lines of the lightning protection device 8: 1-2, 3-6, 4-5 and 7-8 paths of voltage; the third step is to detect the voltage of each path of 8 paths to the ground; if the three steps are qualified, the automatic detection device of the signal lightning protection device is qualified through acousto-optic display, and if any step is unqualified, the buzzer can be used for directly alarming.
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| CN201810776375.5A CN110726885A (en) | 2018-07-16 | 2018-07-16 | Automatic detection device and detection method for signal lightning protector |
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| CN201810776375.5A CN110726885A (en) | 2018-07-16 | 2018-07-16 | Automatic detection device and detection method for signal lightning protector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113985107A (en) * | 2021-11-23 | 2022-01-28 | 珠海格力电器股份有限公司 | Voltage detection method and device and readable storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113985107A (en) * | 2021-11-23 | 2022-01-28 | 珠海格力电器股份有限公司 | Voltage detection method and device and readable storage medium |
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