CN203069703U - Lightning protection equipment intelligence monitoring terminal - Google Patents
Lightning protection equipment intelligence monitoring terminal Download PDFInfo
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- CN203069703U CN203069703U CN 201320027664 CN201320027664U CN203069703U CN 203069703 U CN203069703 U CN 203069703U CN 201320027664 CN201320027664 CN 201320027664 CN 201320027664 U CN201320027664 U CN 201320027664U CN 203069703 U CN203069703 U CN 203069703U
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Abstract
A lightning protection equipment intelligence monitoring terminal relates to the electrical equipment field. The terminal mainly comprises a signal acquisition unit 101, a microprocessor unit 104, a transmission unit 105 and a power supply unit 103. The signal acquisition unit 101 receives a signal from a monitored object and transmits to the microprocessor unit 104. The microprocessor unit 104 converts the signal into digital data and outputs from the terminal through the transmission unit 105. The microprocessor unit 104 collects a control signal received by the transmission unit 105 and makes the signal acquisition unit 101 output a test power supply. The power supply unit 103 provides power for the acquisition unit 101, the microprocessor unit 104 and the transmission unit 105. By using the terminal, a failure state of the power supply/a signal lightning arrester can be automatically detected; a grounding resistor is automatically measured; times of lightning stroke is automatically measured; a plurality of measuring results are processed through the intelligence monitoring terminal and then are automatically uploaded through a network so that monitoring personnel can complete measurement and management processes.
Description
Technical field
The utility model relates to the electronic electric equipment field, refers more particularly to a kind of terminal of thunder resisting equipment intellectual monitoring.
Background technology
Lightning hazards has caused countless economic losses and casualties as one of the world's ten the Nature disasters to the mankind, and the particularly development of hyundai electronics information and new energy technology, the harm of thunder and lightning become more extensively and in-depth.The frequent birth that promotes the lightning protection industry of thunder disaster, up to the present, world's thunder and lightning industry size is very huge, the lightning protection product applications is constantly expansion also, has been extended to a plurality of modernized fields such as military project space flight, IT application in enterprises system, new forms of energy, electric railway from initial building, power domain.
Good lightning protection effect, except the superior lightning protection product of needs, the correct and detection regularly of the survey and design of lightning protection engineering, construction and installation safeguards it also is very important.If go wrong in any one link of survey and design, construction and installation, even best lightning protection product is not realized desirable lightning protection effect yet.People have proposed lightning protection " three is excellent " theory at this point, i.e. " product is excellent, design proposal is excellent, install excellent " has only strictness to follow " three is excellent " principle, just can reach optimal lightning protection effect.
Continuous increase along with the time, various variation can appear in lightning protection and earthed system, inefficacy and stake resistance as lightning protection increase gradually, can make existing lightning-protection system depart from needs of expected design, so regularly effectively lightning-protection system is carried out the emphasis that reliable detection is lightning protection work.
380/220V distribution system lightning arrester is the important electrical equipment that protection distribution line and electric system consumer are avoided overvoltage injury, and its reliability of operation will directly influence the safety of distribution line system safety itself and electric system.In the past, by manually regularly or irregularly patrolling and examining to carry out, can't in time find the lightning arrester fault to the monitoring of lightning arrester, more be difficult to find to produce the big defective of fault.Degradation lightning arrester faster might just break down in 1 polling period fully: lost efficacy, burn even blast, the repeatedly similar accident of Fa Shenging in recent years, not only brought enormous economic loss, and serious threat is to the safe operation of distribution line.The distribution lightning arrester is implemented the long-distance intelligent on-line monitoring, can find early and fix a breakdown on the one hand, avoid causing because of the lightning arrester fault damage of distribution line and consumer, perfected the safe operation early warning system of distribution line lightning arrester; On the other hand, though low voltage surge arrester generally has the inefficacy state output signal, this signal is make-and-break signal, can't directly realize remote transmission.If the failure condition to lightning arrester can be realized data remote, thereby just can detect lightning arrester inefficacy, damage etc. effectively in time.Therefore, application lightning arrester long-distance intelligent on-line monitoring system is significant.
The grounded screen of electric system plays a part working earthing, protective ground and lightning protection.(1) if when the distribution system stake resistance is excessive: when earth fault takes place, the variation of transformer neutral point is increased, may make mutually sound and neutral point voltage too high, cause device damage above the level of insulating requirements.(2) when thunderbolt or lightning wave attack; because electric current is very big; can produce very high residual voltage on ground on the net; near making equipment is subjected to the threat of earth potential counterattack; and the protection equipment of reduction grounded screen own (overhead transmission line and transformer station's electrical equipment; transformer etc.) lightning withstand level of energized conductor does not reach designing requirement and damage equipment.Simultaneously whether the stake resistance of earthed system is qualified is directly connected to workspace operations staff, maintainer's personal safety.But because soil has corrosive attack to earthing device, along with the lengthening of working time, earthing device will progressively be corroded, and stake resistance can constantly raise, and has a strong impact on the safe operation of electric system.Therefore, must strengthen periodic monitoring to electric system ground network ground resistance energetically.Reliable ground is significant to electric system reliability service and safe lightning protection, and the measurement of stake resistance at present is also mainly by artificial regular or irregular manual measurement, carry out one-shot measurement and not only require a great deal of time and fund, and precision of test result can not get guaranteeing.
Existing utility model patent (patent No. ZL 200920097143.3) " grounding resistance measuring system " can only be grounded the remote online of resistance and measure, but can't carry out remote online monitoring to the miscellaneous equipment in the lightning-protection system (as power arrester, signal lightning arrester etc.), its function singleness can not realize the comprehensive monitoring to whole lightning-protection system equipment (as power arrester, signal lightning arrester, stake resistance, thunderbolt number of times etc.).
Summary of the invention
Monitor the problem and shortage that exists in order effectively to solve above lightning-protection system,
The multiple sensors signal that connects with this sensor that thunder resisting equipment intellectual monitoring terminal is gathered by its signal gathering unit after the microprocessing unit processing, outputs to the Surveillance center that is connected with this terminal through transmission unit again, utilizes this terminal canRealize: the failure state that detects power supply/signal lightning arrester automatically; Automatic measurement of Grounding Resistance; Automatically measure the thunderbolt number of times; A plurality of measurement results are passed through
Warp again after the intellectual monitoring terminal processesNetwork is uploaded automatically, and the monitoring personnel just can finish and measure and management process.
Thunder resisting equipment intellectual monitoring terminal mainly comprises signal gathering unit, microprocessor unit, transmission unit, power supply unit; Power supply unit is collecting unit, microprocessor unit, transmission unit power supply; Microprocessor unit receives test instruction and the control signal collecting unit output testing power supply that transmission unit is received; Signal gathering unit receives the signal from monitored target, and is sent to above-mentioned thunder resisting equipment intellectual monitoring terminal, and described signal gathering unit comprises sensor interface, earth resistance module, holding circuit; Sensor interface receives from the signal of the sensor of monitored target and by holding circuit and is transported to microprocessor unit; The earth resistance module is exported testing power supply under the control of microprocessor unit.
OnThe thunder resisting equipment intellectual monitoring terminal of stating, the earth resistance module is made up of earth resistance power supply, relay drive circuit, relay; Microprocessor unit cut-in voltage modular converter converts the direct current that power supply unit provides to testing power supply by the earth resistance power transformer; The relay that processor unit is controlled earth resistance port switching use successively by relay drive circuit is exported testing power supply.
OnThe thunder resisting equipment intellectual monitoring terminal of stating, described microprocessor unit comprises microprocessor and watchdog circuit; Control earth resistance module output testing power supply; The signal that reception is imported into by sensor interface or plate carry the signal that temperature sensor, humidity sensor import into; Data are calculated, are proofreaied and correct at microprocessor unit, and coding sends to transmission unit after handling.
OnThe thunder resisting equipment intellectual monitoring terminal of stating, described microprocessor unit is by regularly, manually or a kind of keying of controlling the earth resistance module in the remote control thereof.
OnThe thunder resisting equipment intellectual monitoring terminal of stating, described transmission unit is the RS232 level shifting circuit, wireless communication module and/or wire communication interface; The RS232TTL level of microprocessor unit output converts the RS232 level to through the RS232 level shifting circuit and delivers to wireless communication module and/or wire communication interface.
OnThe thunder resisting equipment intellectual monitoring terminal of stating, described wireless communication module are one or more in GPRS module, 3G wireless communication module, the 4G wireless communication module.
OnThe thunder resisting equipment intellectual monitoring terminal of stating, described power supply unit comprises exchange conversion module, external direct current power supply interface and filtering reduction voltage circuit;
OnThe thunder resisting equipment intellectual monitoring terminal of stating, the external direct current power supply interface is used for external 12V accumulator, and the exchange conversion module becomes the 220V alternating current into the 12V direct current; The 12V direct current converts the 4V voltage of communication module use, the 3.3V voltage that microprocessor uses, general 5V voltage, the 12V voltage that the earth resistance module is used to by the filtering reduction voltage circuit again.
Beneficial effect: thunder resisting equipment intellectual monitoring terminal is based on the automatic theory of testing, the important composition parts of network service and embedded technology thunder resisting equipment intelligent monitor system, this terminal with the sensor in the monitoring target with connect with monitoring center, thunder resisting equipment intellectual monitoring terminal can detect the failure state of power supply/signal lightning arrester; Automatic measurement of Grounding Resistance under the instruction of Surveillance center; Measure the thunderbolt number of times, upload automatically with communication modes from the measurement result of a plurality of sensors, the monitoring personnel just can finish in monitoring center and measure and management.
Description of drawings
Fig. 1: thunder resisting equipment intellectual monitoring terminal signal logical diagram;
Fig. 2: embodiment 3 described thunder resisting equipment intellectual monitoring terminal signal logical diagrams;
Fig. 3: embodiment 3 described thunder resisting equipment intellectual monitoring terminal pcb board schematic layout patterns;
Fig. 4: the monitoring system synoptic diagram of using thunder resisting equipment intellectual monitoring terminal;
101-signal gathering unit, 103-power supply unit, 104-microprocessor unit, 105-transmission unit, 111-earth resistance module, 102-earth resistance power supply, 121-thunder resisting equipment intellectual monitoring terminal, 122-sensor, the lightning arrester part in 123-lightning protection system, 124-Surveillance center;
CPU-microprocessor: communication, control, will gather calculated signals and convert data to;
U1-wireless communication module; The U2-watchdog circuit; U3-level shifting circuit; U4-filtering reduction voltage circuit; U5-voltage transformation module; U6-relay drive circuit;
P1-exchange conversion module: be used for ac-dc conversion; P2-external direct current power supply interface; J1-wire communication interface;
J2-sensor interface: sensor comprises current in resistance property sensor, leakage current sensor, lightning stroke counter, stake resistance sensor; Q1-temperature sensor; Q2-humidity sensor; B1-earth resistance power transformer;
L1, L2, L3, L4-holding circuit;
JZ1, JZ2, JZ3, JZ4-earth resistance port switch the relay that uses.
Embodiment
Embodiment 1: thunder resisting equipment intellectual monitoring terminal mainly comprises signal gathering unit 101, microprocessor unit 104, transmission unit 105, power supply unit 103; Microprocessor unit 104 picks up control signal and the control signal collecting unit 101 output testing power supplies that transmission unit 105 is received; The signal that signal gathering unit 101 receives from monitored target, and be sent to microprocessor unit 104, microprocessor unit 104 is converted to numerical data to above-mentioned signal, exports from this terminal by transmission unit 105 again; Power supply unit 103 is given collecting unit 101, microprocessor unit 104, transmission unit 105 power supplies.
In embodiment 1, described signal gathering unit 101 can be sensor interface J2, sensor interface J2 receives from by in embodiment 1, and the signal of the sensor of described monitoring target refers to that signal gathering unit 101 receives the signal that signal from monitored target refers to one or more sensors in the current in resistance property sensor, leakage current sensor, lightning stroke counter, stake resistance sensor, temperature sensor Q1, humidity sensor Q2 from monitored target.
Embodiment 1 described thunder resisting equipment intellectual monitoring terminal, signal gathering unit comprises sensor interface J2, earth resistance module 111, holding circuit L1, L2, L3, L4; Sensor interface J2 receives from the signal of the sensor of monitored target and by holding circuit L1, L2, and L3, L4 are transported to microprocessor unit 104; Earth resistance module 111 is exported testing power supply under the control of microprocessor unit 104.
Above-mentionedEarth resistance module 111 is by earth resistance power supply 102, relay drive circuit U6, relay J Z1, JZ2, JZ3, JZ4 forms, earth resistance power supply 102 produces testing power supply under the control of microprocessor unit 104, relay drive circuit U6 accepts the control of microprocessor unit 104 and drives relay J Z1, JZ2, JZ3, JZ4 exports testing power supply.
1 of embodimentThe thunder resisting equipment intellectual monitoring terminal of stating, microprocessor unit 104 is opened the 12V testing power supply, B1 converts the 43V alternating voltage to by the earth resistance power transformer, control the earth resistance port successively and switch the relay J Z1 that uses, JZ2, JZ3, JZ4, the 43V alternating voltage is transported to outer test points, and the data of returning are transferred to microprocessor unit 104 by sensor interface J2.
Embodiment 1Described thunder resisting equipment intellectual monitoring terminal, microprocessor unit 104 comprises microprocessor CPU and watchdog circuit U2; Control earth resistance module 111 output testing power supplies; The signal that reception is imported into by sensor interface J2; Data are calculated, are proofreaied and correct at microprocessor unit 104, and coding sends to transmission unit 105 after handling.
OnState microprocessor unit 104 by regularly, a kind of manually or in the remote control thereof control the keying of the used testing power supply of earth resistance module 111.
OnThe thunder resisting equipment intellectual monitoring terminal of stating, described transmission unit are RS232 level shifting circuit U3, wireless communication module U1 and/or wire communication interface J1; The RS232TTL level of microprocessor unit 104 outputs converts the Rs232 level to through RS232 level shifting circuit U3 and delivers to wireless communication module U1 and/or wire communication interface J1.
OnThe thunder resisting equipment intellectual monitoring terminal of stating, described wireless communication module U1 is one or more in GPRS module, 3G wireless communication module, the 4G wireless communication module.
Embodiment 1Described thunder resisting equipment intellectual monitoring terminal, described power supply unit 103 comprises 220V exchange conversion module and external direct current power supply interface, and the external direct current power supply interface is used for external 12V accumulator, and 220V exchange conversion module becomes the 220V alternating current into the 12V direct current; The 12V direct current converts the 4V voltage of communication module use, the 3.3V voltage that microprocessor CPU uses, general 5V voltage, the 12V voltage that earth resistance module 111 is used again to.
Embodiment 2: thunder resisting equipment intellectual monitoring terminal mainly comprises with the lower part:
(1) sensor interface J2
External sensor comprises current in resistance property sensor, leakage current sensor, lightning stroke counter, stake resistance sensor, be connected to the sensor interface J2 of thunder resisting equipment intellectual monitoring terminal by shielding line, sensor interface J2 place is equipped with protective resistance, in order to protect detection port; Testing result is transported to microprocessor CPU by sensor interface J2, finishes sampling work by the microprocessor CPU executive routine, calculates corresponding data.
(2) earth resistance module 111
During test, open the 12V testing power supply by microprocessor CPU, B1 converts the 43V alternating voltage to by the earth resistance power transformer, microprocessor CPU is controlled JZ1/JZ2/JZ3/JZ4 successively by relay drive circuit U6, the 43V alternating voltage is transported to outside a plurality of test point, and microprocessor CPU reads the data processing of returning by sensor interface J2 and calculates stake resistance.
(3) microprocessor unit 104
Carry temperature, Humidity Detection data for the treatment of the data that pass over from sensor interface J2 and plate, finish regularly detection by programmed control, manually detect and the remote control measuring ability, the calculating of data, correction are finished by software, after finishing dealing with, the data coding sends to transmission unit, be sent to Surveillance center, carry out storage, the monitoring of data.
(4) transmission unit 105
The wireless communication module installation position is arranged on the pcb board, the GPRS module can be installed, also can select dress 3G/4G wireless communication module as required; Microprocessor and transmission unit communication use RS232 mode and outside other wireline equipment communications to use the TCP/RS232/RS485 standard interface plate of apolegamy, the RS232 dress are changed into the communication interface of corresponding device.
(5) power supply unit 103
Use 220V to exchange and produce the 12V direct current, convert 4V voltage, CPU use 3.3V voltage that communication module uses again to, with general 5V voltage, 12V is as supplying with the earth resistance module for power supply, and external power interface is installed, can external 12V accumulator power supply during as field test supply with.
Embodiment 3: present embodiment basic structure is with embodiment 1, and difference is: temperature sensor Q1, humidity sensor Q2 directly are integrated on the pcb board of thunder resisting equipment intellectual monitoring terminal and with microprocessor unit 104 and connect.
Can directly be transferred to microprocessor CPU in the microprocessor unit 104 at the signal of the temperature sensor Q1 described in the embodiment 3, humidity sensor Q2.
Embodiment 4: thunder resisting equipment intellectual monitoring terminal 121 is in the on-the-spot operation of lightning arrester, and the sensor 122 on the lightning arrester 123 is transferred to Surveillance center 124 by thunder resisting equipment intellectual monitoring terminal 121 after signal is passed to 121 processing of thunder resisting equipment intellectual monitoring terminal again; Described thunder resisting equipment intellectual monitoring terminal 121 is that embodiment 1,2 or 3 is described; Sensor 122 comprises current in resistance property sensor, leakage current sensor, lightning stroke counter, temperature/humidity sensor, stake resistance sensor, can satisfy the detection needs of multiple thunder resisting equipment.
Signal gathering unit 101, microprocessor unit 104 and transmission unit 105 on the embodiment 4 described thunder resisting equipment intellectual monitoring terminals 121 concentrate in the same equipment casing, and this equipment is installed in the lightning arrester location;
Embodiment 4 described transmission units 105 comprise multiple communication adaptable interface, data transmission by apolegamy wireless transport module or wireline interface realization and Surveillance center, cooperate monitoring center software to finish historgraphic data recording and the remote monitoring and administration of lightning protection system, the operations staff can understand the ruuning situation of lightning arrester in administrative center.
In the above-described embodiments, external direct current power supply interface P2 can be integrated in the power supply unit 103, also can independently be connected outside power supply unit 103 and with power supply unit 103.
In above-described embodiment: described earth resistance module 111 comprises earth resistance power supply 102, relay drive circuit U6, relay J Z1, JZ2, JZ3, JZ4.
In above-described embodiment: described earth resistance power supply 102 comprises voltage transformation module U5, isolating transformer B1.
In the above-described embodiments, filtering reduction voltage circuit U4 provides 3.3V power supply for microprocessor unit 104.
The described wire communication interface of above-described embodiment J1: the attachment plug of preferred external standard PORT COM, communications protocol use RS232 and on-gauge plate to constitute the TCP/RS232/RS485 communication mode, realize the communication with wired path;
The described power supply unit 103 of above-described embodiment: preferably import 220V civil power or 12V direct current, produce 4V voltage, microprocessor CPU use 3.3V voltage and general 5V voltage that communication module uses; External direct current power supply interface P2 preferably is connected with the 12V accumulator;
The described sensor 122 that links to each other with sensor interface J2 of above-described embodiment comprises current in resistance property sensor, leakage current sensor, lightning stroke counter, stake resistance sensor or temperature, humidity sensor, joining with sensor interface J2 is the output line of sensor 122, also can be output line and the detection power input line of sensor 122, sensor interface J2 can just pass through the signal of sensor attachment plug 2 receiving sensors 122; Sensor interface J2 can also be the signal by sensor attachment plug 2 receiving sensors 122, carries for sensor 122 by sensor attachment plug 1 and detects power supply.
The described microprocessor unit 104 of above-described embodiment comprises microprocessor CPU and watchdog circuit U2, and crashing appears in microprocessor CPU, and U2 resets by watchdog circuit.
Exchange conversion module P1, external direct current power supply interface P2 in the described power supply unit 103 of above-described embodiment and the concrete selection of filtering reduction voltage circuit can be determined according to city's electric standard, the direct supply standard of environment for use; The selection of described earth resistance module 111 each parts also can change because of the requirement of 122 pairs of testing power supplies of each sensor.
Above-described embodiment
The thunder resisting equipment intelligent monitor systemMicroprocessor CPU
Move corresponding software (or program) and realize its function, the function of this software and framework are:
Software is in waiting status at ordinary times, receives telecommand and response that Surveillance center issues, when reaching timing cycle, tests automatically, reports test result to Surveillance center;
Procedure subject is divided into 4 modules:
1, test module: triggered by timer, periodically finish the detection data read of external all the sensors;
2, communication module: with the test data coding, be sent to Surveillance center;
3, remote control module: judge whether the telecommand that receives is effective, if effective instruction is then carried out corresponding function according to instruction.
4, selftest module: the determining program running status, restart program when finding mistake automatically.
Microprocessor CPU operation said procedure is realized following function:
The sensor voltage signal of 1 J2 port input is carried out the AD sampling, converts data to
The data of 2 pairs of all collections are carried out coded combination according to communications protocol, are convenient to the communication use with Surveillance center
3 regularly trigger sampling action, and automatic data collection uploads to Surveillance center
The test voltage that 4 controls 102 need when producing earth resistance
5 pilot relay JZ1-JZ4 are successively to a plurality of test point output earth resistance voltages
The short message that the assigned number that 6 identification U1 receive sends according to information command, is carried out corresponding test action
7 identification J1 receive communication information, according to information command, carry out corresponding test action
8 by U1 or J1 and Surveillance center's communication, the data that exchange monitors.
Claims (9)
1. thunder resisting equipment intellectual monitoring terminal, be characterised in that: described terminal mainly comprises signal gathering unit (101), microprocessor unit (104), transmission unit (105), power supply unit (103); Power supply unit (103) is collecting unit (101), microprocessor unit (104), transmission unit (105) power supply; Microprocessor unit (104) receives test instruction and control signal collecting unit (101) the output testing power supply that transmission unit (105) is received; Signal gathering unit (101) receives the signal from monitored target, and is sent to microprocessor unit (104), and microprocessor unit (104) is converted to numerical data to above-mentioned signal, exports from this terminal by transmission unit (105) again.
2. thunder resisting equipment intellectual monitoring terminal according to claim 1 is characterised in that: described signal gathering unit (101) comprise sensor interface (J2), earth resistance module (111), holding circuit (L1, L2, L3, L4); (L3 L4) is transported to microprocessor unit (104) for L1, L2 from the signal of the sensor of monitored target and by holding circuit in sensor interface (J2) reception; Earth resistance module (111) is exported testing power supply under the control of microprocessor unit (104).
3. thunder resisting equipment intellectual monitoring terminal according to claim 2 is characterised in that: (JZ3 JZ4) forms earth resistance module (111) for JZ1, JZ2 by earth resistance power supply (102), relay drive circuit (U6), relay; Microprocessor unit (104) cut-in voltage modular converter U5 converts the direct current that power supply unit (103) provides to testing power supply by earth resistance power transformer (B1); Processor unit (104) is controlled the relay that the earth resistance port switch to use successively by relay drive circuit (U6), and (JZ3 JZ4) exports testing power supply for JZ1, JZ2.
4. according to the described thunder resisting equipment intellectual monitoring of the arbitrary claim of claim 2-3 terminal, be characterised in that: described microprocessor unit (104) comprises microprocessor (CPU) and watchdog circuit (U2); Control earth resistance module (111) output testing power supply; Receive the signal that imports into by sensor interface (J2) or plate and carry the signal that temperature sensor (Q1), humidity sensor (Q2) import into; Data are calculated, are proofreaied and correct at microprocessor unit (104), and coding sends to transmission unit (105) after handling.
5. thunder resisting equipment intellectual monitoring terminal according to claim 4 is characterised in that: described microprocessor unit (104) is by regularly, manually or the keying of a kind of control earth resistance module (111) in the remote control thereof.
6. thunder resisting equipment intellectual monitoring terminal according to claim 4, be characterised in that: described transmission unit is RS232 level shifting circuit (U3), wireless communication module (U1) and/or wire communication interface (J1); The RS232TTL level of microprocessor unit (104) output converts the RS232 level to through RS232 level shifting circuit (U3) and delivers to wireless communication module (U1) and/or wire communication interface (J1).
7. thunder resisting equipment intellectual monitoring terminal according to claim 6 is characterised in that: described wireless communication module (U1) is in GPRS module, 3G wireless communication module, the 4G wireless communication module one or more.
8. thunder resisting equipment intellectual monitoring terminal according to claim 4, be characterised in that: described power supply unit (103) comprises exchange conversion module (P1), external direct current power supply interface (P2) and filtering reduction voltage circuit.
9. thunder resisting equipment intellectual monitoring terminal according to claim 8 is characterised in that: external direct current power supply interface (P2) is used for external 12V accumulator, and the exchange conversion module becomes the 220V alternating current into the 12V direct current; The 12V direct current converts the 4V voltage of communication module use, the 3.3V voltage that CPU uses, general 5V voltage, the 12V voltage that earth resistance module (111) is used to by the filtering reduction voltage circuit again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320027664 CN203069703U (en) | 2013-01-20 | 2013-01-20 | Lightning protection equipment intelligence monitoring terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320027664 CN203069703U (en) | 2013-01-20 | 2013-01-20 | Lightning protection equipment intelligence monitoring terminal |
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| CN203069703U true CN203069703U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320027664 Expired - Lifetime CN203069703U (en) | 2013-01-20 | 2013-01-20 | Lightning protection equipment intelligence monitoring terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502725A (en) * | 2014-11-21 | 2015-04-08 | 国家电网公司 | Grounding resistance measurement instrument terminal data acquisition system and method |
| CN105259824A (en) * | 2015-09-28 | 2016-01-20 | 成都贝发信息技术有限公司 | Workshop electricity monitoring system with electric leakage monitoring function |
| CN109334861A (en) * | 2018-07-31 | 2019-02-15 | 深圳市辰漩宁科技有限公司 | Ship lightning protection system |
| CN110794219A (en) * | 2019-10-15 | 2020-02-14 | 宁夏中科天际防雷检测有限公司 | Intelligent grounding resistance monitoring control instrument for lightning protection engineering and monitoring method |
-
2013
- 2013-01-20 CN CN 201320027664 patent/CN203069703U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502725A (en) * | 2014-11-21 | 2015-04-08 | 国家电网公司 | Grounding resistance measurement instrument terminal data acquisition system and method |
| CN105259824A (en) * | 2015-09-28 | 2016-01-20 | 成都贝发信息技术有限公司 | Workshop electricity monitoring system with electric leakage monitoring function |
| CN109334861A (en) * | 2018-07-31 | 2019-02-15 | 深圳市辰漩宁科技有限公司 | Ship lightning protection system |
| CN109334861B (en) * | 2018-07-31 | 2024-05-28 | 深圳市辰漩宁科技有限公司 | Lightning protection system for ship |
| CN110794219A (en) * | 2019-10-15 | 2020-02-14 | 宁夏中科天际防雷检测有限公司 | Intelligent grounding resistance monitoring control instrument for lightning protection engineering and monitoring method |
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Granted publication date: 20130717 |