CN103743937A - High voltage presence indicating device and implementing method thereof - Google Patents
High voltage presence indicating device and implementing method thereof Download PDFInfo
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- CN103743937A CN103743937A CN201410040863.1A CN201410040863A CN103743937A CN 103743937 A CN103743937 A CN 103743937A CN 201410040863 A CN201410040863 A CN 201410040863A CN 103743937 A CN103743937 A CN 103743937A
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Abstract
The invention discloses a high voltage presence indicating device and an implementing method thereof, and mainly solves the problems that high voltage presence indicating devices are mostly powered by batteries or external power supplies, the batteries are inconvenient to replace and are easily influenced by the heat of high-voltage electrical equipment to cause device failure, and the security is low in the prior art. The high voltage presence indicating device comprises a detection transmitting end and a receiving display end, wherein the detection transmitting end and the receiving display end are completely isolated on the high voltage side and the low voltage side, and communicate with each other through wireless radio frequency; the detection transmitting end comprises an electric field coupling-based inductive energy fetching device for providing working electric energy for the detection transmitting end. By the scheme, the aims of safety, reliability and wide application range are fulfilled, and the high voltage presence indicating device has high practical value and promotional value.
Description
Technical field
The present invention relates to a kind of safety device, specifically, relate to a kind of high voltage display device and its implementation.
Background technology
In recent years, high voltage display device is widely used in electric system, for preventing electric misoperation.Traditional high voltage display device mostly adopts wired detection mode, needs to have a power failure install and original circuit is changed, and has various potential safety hazards in operational process, by new device, is substituted gradually.
Current new device adopts communication mostly, and coordinate the use of the various electronic components such as single-chip microcomputer, the band electro-detection of realization to high voltage electric equipment, in this type of scheme, detecting sensor part adopts battery or external power source mostly, but, battery altering is inconvenience very, easily be subject to high voltage electric equipment warming-up effect and cause failure of apparatus, severe patient will cause accident to occur, in order to improve detection safety, people are in the urgent need to the higher and safe and reliable high voltage display device of a kind of cost performance.
Summary of the invention
The object of the present invention is to provide a kind of high voltage display device and its implementation, mainly solve the high voltage display device existing in prior art and mostly adopt battery or external power source, battery altering is inconvenience comparatively, and be easily subject to high voltage electric equipment warming-up effect and cause failure of apparatus, the problem that security is not high.
To achieve these goals, the technical solution used in the present invention is as follows:
High voltage display device, comprise and detect transmitting terminal and receive display end, described detection transmitting terminal is installed on the high-pressure side of high voltage electric equipment, receive the low-pressure side that display end is installed on high voltage electric equipment, detect transmitting terminal and isolate completely, by less radio-frequency, communicate with reception display end high and low pressure side, described detection transmitting terminal is included as it provides the induction energy fetching device based on field coupled of work energy.
Specifically, described detection transmitting terminal comprises the rf signal amplification circuit that power supply stabilization circuit that input end is connected with induction energy fetching device, the sound table resonator that input end is all connected with power supply stabilization circuit be connected with sound table resonator with charged pilot lamp, input end, the emitting antenna that input end is connected with rf signal amplification circuit.
Further, described reception display end comprises the receiving antenna that signal that emitting antenna is sent receives, the rf signal amplification circuit that input end is connected with receiving antenna, the radiofrequency signal receiving circuit that input end is connected with rf signal amplification circuit, the processor that input end is connected with radiofrequency signal receiving circuit, the charged pilot lamp that input end is connected with processor.
Consider actual demand, described processor is connected with electroscopy equipment interface, RS485 interface and relay normally open interface.
Further; the described induction energy fetching device based on field coupled comprises successively connected coupling energy taking unit, anti-overvoltage crowbar, rectification circuit and tank circuit; the trigger circuit that are connected with tank circuit; and the controllable silicon being all connected with tank circuit with trigger circuit, described power supply stabilization circuit is connected with tank circuit.
Wherein, described coupling energy taking unit comprises the top crown and the bottom crown that are parallel to each other.
In the present invention, described detection transmitting terminal is three, is arranged on respectively on A, B, the C three-phase of high voltage electric equipment, and the charged pilot lamp being connected with power supply stabilization circuit is single-phase charged pilot lamp; The charged pilot lamp being connected with processor is the charged pilot lamp of three-phase.
Based on said apparatus, the invention discloses a kind of implementation method of high voltage display device, comprise the following steps:
(1) different signal transmission frequency three are detected on A, B that transmitting terminals are arranged on respectively high voltage electric equipment, C three-phase;
(2) when high voltage electric equipment is charged, alternating electric field exists, the induction energy fetching device that detects transmitting terminal obtains energy from alternating electric field, charged pilot lamp continues the signal that flashes, sound table resonator produces oscillator signal simultaneously, rf signal amplification circuit is passed to emitting antenna after this oscillator signal is amplified and sends, when reception display end receives the radiofrequency signal of transmission antennas transmit, by rf signal amplification circuit, the radiofrequency signal receiving is amplified, by radiofrequency signal receiving circuit, the signal after amplifying is received, and by radiofrequency signal receiving circuit, by frequency sweep nuclear phase processing procedure, obtained the charged information of the each phase of high voltage electric equipment, then by radiofrequency signal receiving circuit, charged information is passed in processor, by the charged pilot lamp of processor control three-phase, demonstrating each facies tract telecommunications ceases, and export block signal, when high voltage electric equipment is not charged, alternating electric field disappears, and detects transmitting terminal and stops transmitted signal,
In described step (1), the induction energy fetching device based on field coupled is got energy by following steps:
(1a) top crown of coupling energy taking unit is connected on high-voltage charged body;
(1b) alternating current top crown of coupling energy taking unit and bottom crown being formed under electric field action is connected to anti-overvoltage crowbar, afterwards alternating current is connected to rectification circuit;
(1c) rectification circuit is direct current output by AC rectification, and tank circuit is charged;
(1d) tank circuit is connected with trigger circuit with controllable silicon, regulates controllable silicon and trigger circuit control tank circuit to carry out charge or discharge, and the electric energy after electric discharge is connected to power supply stabilization circuit.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention adopts communication, high and low pressure side is isolated completely, by the induction way to take power power supply of field coupled, do not need battery or external power source, its work is not limited by high voltage electric equipment operating voltage, range of current, be not subject to equipment self-heating and strong electromagnetic environmental impact, implement more for convenience, overall security is higher.
(2) in the present invention, radiofrequency signal without doing the modulation such as ASK, FSK, is directly launched unloaded ripple by radio-frequency antenna after amplifying, and without using any modulation circuit, processor, capacitance type sensor, thereby can greatly reduce power consumption, fully guarantee the reliability with electro-detection and demonstration.
(3) in the present invention, the signal transmission frequency that detects transmitting terminal is different, receives display end and has frequency sweep nuclear phase function, can judge and indicate each phase electriferous state of high voltage electric equipment, staff just can understand the electriferous state of each phase by charged pilot lamp, design very hommization.
(4) in the present invention, receive display end and possess electroscopy equipment interface, relay normally open interface and RS485 interface, extensibility is higher, can meet the forced blocking demand to various high voltage electric equipments comprehensively.
(5) in the present invention, adopt the mode of field coupled to get energy, coupling energy taking unit in device and the work of high-voltage charged body equipotential, thereby safety and reliability is all higher, and one-piece construction is comparatively simple, the device blocks of using less, thereby implement highlyer for convenience of, cost performance, the scope of application is wider, is applicable to large-scale promotion application.
Accompanying drawing explanation
Fig. 1 is the system chart that detects transmitting terminal in the present invention.
Fig. 2 is the system chart that receives display end in the present invention.
Fig. 3 is the system chart of the induction energy fetching device based on field coupled in the present invention.
Fig. 4 is the circuit theory diagrams of the induction energy fetching device based on field coupled in the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
In order to solve the high voltage display device existing in prior art, mostly adopt battery or external power source, battery altering is inconvenience comparatively, and be easily subject to high voltage electric equipment warming-up effect and cause failure of apparatus, the problem that security is not high, as shown in Fig. 1 ~ 4, the invention discloses a kind of high voltage display device without using battery or any external power source, it mainly comprises detection transmitting terminal and receives display end, detect transmitting terminal conventionally take three as one group, be directly installed on the on high-tension side A of high voltage electric equipment, B, C three-phase; Receive the low-pressure side that display end is installed on high voltage electric equipment, detect transmitting terminal and receive between display end and pass through Radio-Frequency Wireless Communication, high and low pressure side is isolated completely; Detect transmitting terminal and directly from the alternating electric field of high voltage electric equipment existence around, obtain energy by the induction energy fetching device based on field coupled.
As shown in Figure 1, detect transmitting terminal and comprise be connected successively induction energy fetching device, power supply stabilization circuit, sound table resonator, rf signal amplification circuit and the emitting antenna of (output terminal that is the former is connected with the latter's input end) of output terminal, and the charged pilot lamp that is connected with power supply stabilization circuit of input end.
As shown in Figure 2, receive display end and comprise be connected successively receiving antenna, rf signal amplification circuit, radiofrequency signal receiving circuit, processor and the charged pilot lamp of three-phase of (output terminal that is the former is connected with the latter's input end) of output terminal.
As shown in Figure 3, induction energy fetching device based on field coupled mainly comprises coupling energy taking unit, anti-overvoltage crowbar, rectification circuit, tank circuit, trigger circuit and controllable silicon, wherein, coupling energy taking unit is comprised of top crown and the bottom crown of parallel placement, top crown can be connected on high-voltage charged body, work with high-voltage charged body equipotential, its work is not subject to the restriction of high-voltage charged body operating voltage and range of current, the current/voltage height time that only impact discharges and recharges, bottom crown forms alternating current under the effect of electric field, afterwards the alternating current of formation is connected to anti-overvoltage crowbar,
Anti-overvoltage crowbar carries out anti-overvoltage protection to circuit, can not damage device, then the alternating current of formation is connected to rectification circuit while guaranteeing high-voltage charged body overtension;
The alternating current that rectification circuit is received changes direct current into, and to described tank circuit charging;
Tank circuit is connected with controllable silicon and trigger circuit, and under the adjusting of controllable silicon and described trigger circuit, carry out charge and discharge, when operation, preferably tank circuit is set to the mode of operation that string fills and puts, to improve energy, collect efficiency, between withstand voltage and energy storage capacity, reach balance, and the device of realizing under the control of controllable silicon and trigger circuit under threshold voltage discharges and turn-off function, this tank circuit can adopt the mode of multiple capacitor combinations, and such array mode is than only adopting the energy storage effect of single electric capacity more obvious.
Induction energy fetching device does not comprise load, and the load in the present embodiment refers to and detects the circuit part except induction energy fetching device in transmitting terminal.
As shown in Figure 4, the present embodiment provides a kind of in order to implement the circuit theory diagrams of the induction energy fetching device based on field coupled:
Region 2 is anti-overvoltage crowbar, it is TVS pipe, when the high energy impact events of moment is stood at TVS pipe two ends, it can reduce its impedance with high speed suddenly, absorb a large electric current simultaneously, by the voltage clamp between its two ends on a predetermined numerical value, thereby guarantee that circuit component below avoids the high-octane impact of transient state and damage;
Region 3 is rectification circuit, and the electric current passing through is carried out to rectification, and alternating current is converted into direct current;
Region 4 is tank circuit, adopts the string mode of filling and putting, that is: during charging, rectification circuit charges to capacitor C 1, charges by diode D2 to capacitor C 2 simultaneously; During electric discharge, the electric current of capacitor C 1 forms loop by load and diode D1, the electric current of capacitor C 2 forms loop after diode D3 and load simultaneously, the effect of diode D2 is one-way conduction, conducting while charging, electric current charges for capacitor C 2 by capacitor C 1 is rear, during electric discharge, diode D2 plays the effect of blocking-up, makes electric current that capacitor C 2 discharges smoothly by load.The mode of using this string to fill and put, can effectively improve the efficiency that energy is collected.In the present invention, adopt two capacitor loop C1, C2 to discharge and recharge, when application, can increase or reduce capacitor loop according to loading demand situation;
Region 5 is trigger circuit, user presets trigger value, when the diac DS both end voltage in trigger circuit reaches trigger value, diac conducting, both end voltage sharply declines, and electric current increases, and the current value that moment increases reaches silicon controlled trigger current value, make controlled silicon conducting, circuit starts electric discharge;
Region 6 is controllable silicon, after trigger circuit triggers controllable silicon, and controlled silicon conducting, tank circuit starts as load provides electric energy, and when maintaining electric current by silicon controlled current value lower than it, controllable silicon turn-offs, and circuit stops as load supplying.
Based on above-mentioned device circuitry, the principle of work of the induction energy fetching device based on field coupled is as follows:
The placement parallel with bottom crown of the top crown of coupling energy taking unit, by the mode of field coupled, getting can, the top crown of coupling energy taking unit is connected on high-voltage charged body, under the effect of electric field, form alternating current with the bottom crown of coupling energy taking unit, the alternating current of formation is connected to anti-overvoltage crowbar, circuit is carried out to anti-overvoltage protection, again the alternating current of formation is carried out to rectification by rectification circuit, by its rectification, it is direct current, and tank circuit is charged, tank circuit is connected with controllable silicon and trigger circuit, and under the adjusting of controllable silicon and trigger circuit, carry out charge and discharge, electric energy after electric discharge can be for load.
The course of work of the present invention is as follows:
Detecting transmitting terminal is three, be arranged on respectively the A of high voltage electric equipment, B, on C three-phase, be installed on A, B, the signal transmission frequency of the detection transmitting terminal on C three-phase is different, when high voltage electric equipment is charged, alternating electric field exists, the alternating electric field that induction energy fetching device based on field coupled directly exists from high voltage electric equipment, obtain energy around, through power supply stabilization circuit, carry out to charged pilot lamp harmony table resonator, powering after voltage stabilizing, now charged pilot lamp continues the signal that flashes, sound table resonator produces oscillator signal simultaneously, signal is after rf signal amplification circuit amplifies, directly by transmission antennas transmit, go out, when high voltage electric equipment is not charged, alternating electric field disappear, detect transmitting terminal stop sending charged signal, by sort signal send, stop with equipment live, electriferous state does not keep the mode of synchronizeing just can realize real-time band electro-detection,
When reception display end receives radiofrequency signal, represent to have at least in high voltage electric equipment three-phase one mutually charged, now by rf signal amplification circuit, radiofrequency signal is amplified, by radiofrequency signal receiving circuit, received, process frequency sweep nuclear phase process is to obtain each phase electriferous state of high voltage electric equipment simultaneously, then by the charged pilot lamp of processor control three-phase, demonstrating each facies tract telecommunications ceases, and export block signal, in the three-phase of high voltage electric equipment, any one when mutually charged, the charged pilot lamp of three-phase all can accurately be indicated this charged phase, now processor keeps output block signal, only has three-phase simultaneously during decompression, receive display end and no longer receive radiofrequency signal, now the charged pilot lamp of three-phase shows that high voltage electric equipment entirety is without electricity, processor output allows unlocking signal, thereby, staff can directly be observed and be judged the charged situation of high voltage electric equipment by the charged pilot lamp of three-phase, realize in this way real-time charged demonstration and locking.
As required, block signal is output to anti-misoperation locking device, meets the requirement of all kinds of Mechanically programms lock, electric blocking, computer anti-misoperation and lockout, realizes and various dissimilar error-proof device seamless access.
According to above-described embodiment, just can realize well the present invention.
Claims (9)
1. high voltage display device, comprise and detect transmitting terminal and receive display end, it is characterized in that, described detection transmitting terminal is installed on the high-pressure side of high voltage electric equipment, receive the low-pressure side that display end is installed on high voltage electric equipment, detect transmitting terminal and isolate completely, by less radio-frequency, communicate with reception display end high and low pressure side, described detection transmitting terminal is included as it provides the induction energy fetching device based on field coupled of work energy.
2. high voltage display device according to claim 1, it is characterized in that, described detection transmitting terminal comprises the rf signal amplification circuit that power supply stabilization circuit that input end is connected with induction energy fetching device, the sound table resonator that input end is all connected with power supply stabilization circuit be connected with sound table resonator with charged pilot lamp, input end, the emitting antenna that input end is connected with rf signal amplification circuit.
3. high voltage display device according to claim 1, it is characterized in that, described reception display end comprises the receiving antenna that signal that emitting antenna is sent receives, the rf signal amplification circuit that input end is connected with receiving antenna, the radiofrequency signal receiving circuit that input end is connected with rf signal amplification circuit, the processor that input end is connected with radiofrequency signal receiving circuit, the charged pilot lamp that input end is connected with processor.
4. high voltage display device according to claim 3, is characterized in that, described processor is connected with electroscopy equipment interface, RS485 interface and relay normally open interface.
5. high voltage display device according to claim 1 and 2; it is characterized in that; the described induction energy fetching device based on field coupled comprises successively connected coupling energy taking unit, anti-overvoltage crowbar, rectification circuit and tank circuit; the trigger circuit that are connected with tank circuit; and the controllable silicon being all connected with tank circuit with trigger circuit, described power supply stabilization circuit is connected with tank circuit.
6. high voltage display device according to claim 5, is characterized in that, described coupling energy taking unit comprises the top crown and the bottom crown that are parallel to each other.
7. according to the high voltage display device described in claim 2 or 3, it is characterized in that, described detection transmitting terminal is three, is arranged on respectively on A, B, the C three-phase of high voltage electric equipment, and the charged pilot lamp being connected with power supply stabilization circuit is single-phase charged pilot lamp; The charged pilot lamp being connected with processor is the charged pilot lamp of three-phase.
8. the implementation method of the high voltage display device described in claim 1 ~ 7 any one, is characterized in that, comprises the following steps:
(1) different signal transmission frequency three are detected on A, B that transmitting terminals are arranged on respectively high voltage electric equipment, C three-phase;
(2) when high voltage electric equipment is charged, alternating electric field exists, the induction energy fetching device that detects transmitting terminal obtains energy from alternating electric field, charged pilot lamp continues the signal that flashes, sound table resonator produces oscillator signal simultaneously, rf signal amplification circuit is passed to emitting antenna after this oscillator signal is amplified and sends, when reception display end receives the radiofrequency signal of transmission antennas transmit, by rf signal amplification circuit, the radiofrequency signal receiving is amplified, by radiofrequency signal receiving circuit, the signal after amplifying is received, and by radiofrequency signal receiving circuit, by frequency sweep nuclear phase processing procedure, obtained the charged information of the each phase of high voltage electric equipment, then by radiofrequency signal receiving circuit, charged information is passed in processor, by the charged pilot lamp of processor control three-phase, demonstrating each facies tract telecommunications ceases, and export block signal, when high voltage electric equipment is not charged, alternating electric field disappears, and detects transmitting terminal and stops transmitted signal.
9. the implementation method of high voltage display device according to claim 8, is characterized in that, in described step (1), the induction energy fetching device based on field coupled is got energy by following steps:
(1a) top crown of coupling energy taking unit is connected on high-voltage charged body;
(1b) alternating current top crown of coupling energy taking unit and bottom crown being formed under electric field action is connected to anti-overvoltage crowbar, afterwards alternating current is connected to rectification circuit;
(1c) rectification circuit is direct current output by AC rectification, and tank circuit is charged;
(1d) tank circuit is connected with trigger circuit with controllable silicon, regulates controllable silicon and trigger circuit control tank circuit to carry out charge or discharge, and the electric energy after electric discharge is connected to power supply stabilization circuit.
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| CN201410040863.1A CN103743937B (en) | 2014-01-28 | 2014-01-28 | A kind of method utilizing high voltage display device to carry out HV live displaying |
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| CN104300515A (en) * | 2014-10-30 | 2015-01-21 | 国网河南省电力公司平顶山供电公司 | Live part verification information recognition and intelligent protection device for transformer substation |
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| CN105403757A (en) * | 2015-12-03 | 2016-03-16 | 中色科技股份有限公司 | Intelligent safety bracelet for maintenance and debugging of alternating-current electrical equipment |
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| CN113281556A (en) * | 2021-04-13 | 2021-08-20 | 广东电网有限责任公司广州供电局 | Live display device and live measurement system |
| CN114006376A (en) * | 2021-11-04 | 2022-02-01 | 广东电网有限责任公司 | Voltage replenisher |
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| CN107945475A (en) * | 2017-11-01 | 2018-04-20 | 安徽康迈德电力保护设备有限公司 | Control 2.4G signals penetrate the device and method of corona layer outside super-pressure |
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| CN113281556A (en) * | 2021-04-13 | 2021-08-20 | 广东电网有限责任公司广州供电局 | Live display device and live measurement system |
| CN113281556B (en) * | 2021-04-13 | 2023-10-20 | 广东电网有限责任公司广州供电局 | Charged display device and charged measurement system |
| CN114006376A (en) * | 2021-11-04 | 2022-02-01 | 广东电网有限责任公司 | Voltage replenisher |
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