CN2478115Y - Self-feeding far infrared and radio current sensor - Google Patents
Self-feeding far infrared and radio current sensor Download PDFInfo
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- CN2478115Y CN2478115Y CN 01236454 CN01236454U CN2478115Y CN 2478115 Y CN2478115 Y CN 2478115Y CN 01236454 CN01236454 CN 01236454 CN 01236454 U CN01236454 U CN 01236454U CN 2478115 Y CN2478115 Y CN 2478115Y
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Abstract
The utility model relates to a self-support type far infrared and wireless current sensor which is composed of an emitter and a receiver, and an open core coil CT is inserted on the electric device and the circuit. The emitter coverts the current signal of CT into a voltage signal, and the current value is emitted to the receiving terminal in the digital mode and radio emission mode after being micro-processed, and the feature is to self-support and self-emit without dividing voltage grade. The receiver is a multi-function processor, and the values of voltage, current, active power, reactive power and power factor can be taken through matching the received current signal with local supply voltage signal, and the sensor can complete the control of power factor automatic compensation, the over-current and quick break protection of electric equipment as well as alarm function.
Description
The utility model relates to a kind of current transformer in the power transmission and transforming equipment on the high-tension line that is widely used in, particularly a kind of self contained far infrared and radio current sensor, it has replaced current current transformer, solved some weak links that current transformer exists, it can act on different electric pressures and place.
Present current transformer be must series connection in circuit and equipment, its existing deficiency is: 1) once require withstand voltage insulation height with secondary connection; 2) the complicated and cost height of manufacturing process; 3) big and heave and installation and maintenance inconvenience; 4) wiring of need auxiliary facility and complicated secondary; 5) electric pressure is expensive more big more.
The purpose of this utility model is a kind of self contained far infrared and the radio current sensor of developing at above problem, and it has overcome the weakness of above current transformer, and its adopts open core coil type mutual inductor, be connected on the consumer and circuit in.When circuit and equipment produced electric current, the sensor emission end adopted self contained power supply, and current value is changed into digital quantity, through far infrared power valve or radio transmission assembly, adopt wireless form to be transmitted to receiver; When receiving signal, receiver inputs to microprocessor later on, after it handles current signal, cooperate the various parameter displayed values of the exportable needs of local power supply: (1) current value, (2) magnitude of voltage, (3) active power value, (4) reactive power value and power factor value.Can set kinds of protect and control as required: voltage protection working value, 3 1) current protection working value, 2)) cooperate compensation condenser to realize power factor controlling and reactive-load compensation, 4) and the interface that is connected with microcomputer can be set, replace the computer transmitter, 5 of transformer station) can also connect far distance controlled interface (remote moving function).
The technical solution of the utility model is achieved in that self contained far infrared and radio current sensor, it is made up of wherein transmitter and receiver, a, the formation of transmitter is: open core coil CT, current-to-voltage converting circuit D9-D12, voltage stabilization and current stabilization circuit U 9-U17, sample resistance R42 connects 17 pin of single-chip microcomputer U18 through amplifier U6A, open core coil CT is through resistance R 34, amplifier U6B connects 6 pin of single-chip microcomputer U18,12 pin of single-chip microcomputer U18 divide two tunnel outputs, one the tunnel connects the base stage of triode T5, the output sending and receiving optical diode D7 of triode T5, D8; Another road meets combined transmit element U19 through resistance R 44, and 2 human hair combing wastes of combined transmit element U19 are penetrated output; The formation of b, receiver is: 220 volts of power supplys divide two tunnel inputs, and one the tunnel through rectification circuit D4, and energy-storage capacitor C is connected with switch transistor T 3, T4, and the output terminal of switch transistor T 3, T4 is connected with switching winding QT, closing coil QH; Another road meets transformer B1, rectification circuit D1,5 volts of mu balanced circuit U2 outputs, 10 couchers are made voltage, voltage signal inserts amplifier U5A through resistance R 1, the output of amplifier U5A connects 4 pin of single-chip microcomputer U3, current signal is by the 4th pin input of receiving unit FYRF1, its the 2nd pin output meets amplifier U5B, the output of amplifier U5B connects the 6th pin of single-chip microcomputer U3, after single-chip microcomputer U3 handles, by 11 of single-chip microcomputer U3,12 pin meet sub-switch circuit U4,7 of single-chip microcomputer U3,13,16,17,18,21,22,23,24 pin sending and receiving optical diodes, 26 of single-chip microcomputer U3,27,28 pin connection function key S1, S2, S3,25 of single-chip microcomputer U3,26 pin meet display U7, U8, U9, its output meets charactron BS1, BS2, BS3,14 of single-chip microcomputer U3, the output of 15 pin meets memory circuit U1.After receiving unit FYRF1 receives current signal; amplify by amplifier U5B; input to single-chip microcomputer U3 decoding then; after taking from the power source voltage signal and amplifying by amplifier U5A; after single-chip microcomputer U3 handles; according to desired parameters and function output; that is: function is indicated and digital display parameter; connect microcomputer interface; carry out and drive the high-power contactless switch transistor T 3 of outlet employing, T4; adopt sub-switch circuit U4 between the forceful electric power light current, major function is the automatic switching of High Voltage and Passive Automatic Compensation Device, the current protection of electric line, consumer and test.
Good effect of the present utility model is:
The function of energy automatic trip when 1, this product has overvoltage protection and circuit phase shortage or power failure.
2, this product can be pressed the power factor size automatic switching switch of setting, but the reactive requirement amount automatic switching of computational scheme; Automatic phase is adjusted.
But 3, the memory function of this product display voltage, electric current, power factor value and switch motion number of times.
4, this small product size is little, and is in light weight, economic and reliable, and wiring is simple, and is easy to maintenance.
5, this product has overcome the deficiency of traditional type current transformer.
6, this product function is many, small investment.
7, this product is not limited by electric pressure and infield.
8, this product transmitting terminal directly with the digital quantity transmission, is cut down the number of intermediate links.
Fig. 1 is the structural front view of the utility model open core coil CT.
Fig. 2 is the side view of the utility model Fig. 1.
Fig. 3 is the circuit theory diagrams of the utility model transmitter.
Fig. 4 is the circuit theory diagrams of the utility model receiver.
The utility model is described in further detail below in conjunction with accompanying drawing.
Shown in Fig. 1,2,3,4.Self contained far infrared and radio current sensor are made up of two parts, be transmitter and receiver, transmitter is by open core coil CT, current-to-voltage converting circuit D9-D12, and voltage stabilization and current stabilization element U9-U17, take out the amplitude variable signal of electric current at resistance R 42 two ends, after amplifying, amplifier U6A inputs to single-chip microcomputer U18, in open core coil CT, directly take out the phase signal of electric current, add amplifier U6B through resistance R 34, after amplifying, input single-chip microcomputer U18, after single-chip microcomputer U18 handles, adopt analog to digital conversion, after the rf modulations, be transmitted on the receiver with digital form by radiated element far infrared ultrasound wave or multiple component units (wherein adopting a kind of).All components is combined on the one, does not have outside the connection, adopts self-supporting self start type, can be installed in the voltage place of different brackets.
Shown in Fig. 1,2,3,4.Receiver of the present utility model is after receiving unit FYRF1 receives current signal; by inputing to single-chip microcomputer U3 decoding after the amplifier U5B amplification; taking from the power source voltage signal amplifies through amplifier U5A; after single-chip microcomputer U3 handles; according to desired parameters and function output; that is: function is indicated and digital display parameter; connect microcomputer interface; carry out and drive the high-power contactless switch transistor T 3 of outlet employing; T4; adopt sub-switch circuit U4 between the forceful electric power light current; major function is the automatic switching of High Voltage and Passive Automatic Compensation Device, electric line; the current protection of consumer and test.
Below in conjunction with embodiment application of the present utility model is illustrated:
As Fig. 1,2, shown in 3, the principle of work of the utility model far infrared and transmitting set is to insert open core coil CT in consumer or circuit, when electric current passes through open core coil CT, open core coil CT can produce voltage by current-to-voltage converting circuit D9-D12, through rectification and capacitor C 26, C25, C22 filtering, capacitor C 25 two ends produce the operating voltage of 5V, stabilivolt U10-U17 is the voltage stabilizing overcurrent element, on resistance R 42, produce the current/voltage conversion, the voltage of this amplitude is through resistance R 40, capacitor C 18, resistance R 41, R44 inserts 2 of amplifier U6A, 3 ends, export by 1 end, insert 17 pin of single-chip microcomputer U18, it is the PIC16C711 model.Resistance R 26 is a feedback resistance, and resistance R 38, R39 are dropping resistor, and capacitor C 19 is an electric capacity of voltage regulation, and capacitor C 24 is a building-out capacitor.The phase place no-load voltage ratio value of electric current adds 5,6 ends of amplifier U6B by after the resistance R 34, through 6 pin of 7 pin input single-chip microcomputer U18.Single-chip microcomputer U18 in the phase place that receives electric current and amplitude after inter-process, 12 pin output through single-chip microcomputer U18, be input on the triode T5 through resistance R 43 again, its model is 9013, amplify promotion far infrared power valve D7, D8 by triode T3, current signal is transmitted to receiving end with digital form.Resistance R 45 is a dropping resistor, and crystal oscillator OS2, C17, C12 are the crystal oscillating circuit of single-chip microcomputer, when radiation pattern adopts radio transmission, inserts radio transmission assembly U19 at the output terminal of this circuit by resistance R 44 and gets final product.The size of transmission current is relevant with the ratio of open core coil CT, and capacitor C 20, C21, resistance R 46 are compensating circuit.The minimum working current value is 5%.Transmitting range far infrared 8-15 rice, radio 20-50 rice.
Shown in Fig. 1,2,4, the principle of work of the utility model far infrared and radio receiver is that far infrared and radio receiver are the controllers of a high-pressure reactive compensation automatic switching device.Because transmitting terminal is mounted in the B of high-tension line and goes up mutually, what the operating voltage of receiving end and signal voltage connect is the AC phase voltage, voltage is through the 1st, the 2 ends input 220V of plug-in unit J3 alternating voltage, after rectification circuit D4 rectification, give CSET C charging by resistance R 33, R25, and supply with switch transistor T 3, T4 wait divide-shut brake line work.Another road 220V voltage is 9V through transformer B1 step-down, and through rectification circuit D1 rectification, the operating voltage of this circuit is supplied with in capacitor C 8, C3 filtering and U2 voltage stabilizing.Reference voltage is after resistance R 1 is by current-to-voltage converting circuit D2, D3 pressure limiting, and 3 ends that insert amplifier U5A amplify after resistance R 17 adds the 4th pin of single-chip microcomputer U3, and its model is PIC16C73B.Resistance R 18 is a dropping resistor; the adjustment circuit that the overvoltage protection signal is formed through resistance R 19, R24, potentiometer W1, capacitor C 10 is 2 pin through resistance R 20 input single-chip microcomputer U3; resistance R 20 is a dropping resistor, and LED 1 is voltage indication light emitting diode.After the current signal that transmitter sends receives, the 8th end through antenna RPM and plug-in unit J3, insert 4 ends of receiving unit FYRF1, insert 6 ends of amplifier U5B again by resistance R 29, after receiving unit FYRF1 amplifies, insert 5 ends of amplifier U5B by resistance R 26, after amplifying, input on 6 pin of single-chip microcomputer U3 through resistance R 16 by 7 ends, after little processing, function is as required exported various parameters, by 26,27, the 28 pin output of single-chip microcomputer U3, through 5,6, the 7 termination function keys of plug-in unit J2A.The 7th, 13,16,17,18,21,22,23,24 pin by single-chip microcomputer U3 are exported various indicator signals, and through 2,4 and 6,8 ends of resistance R 5, R13 and plug-in unit J1A, 1,3 ends of plug-in unit J2A make light emitting diode work.The demonstration of various parameters is to have 25,26 pin of single-chip microcomputer U3 to be linked into the U7 that decoding drives integrated package MC74HC164 through 4,5 ends of plug-in unit J2A, and U8 is on the U9.BS1, BS2, BS3 are nixie display.The 11st pin of single-chip microcomputer U3 output switching signal makes the work of sub-switch circuit U4 upper end through resistance R 15 when power factor is low, and driving switch pipe T4 drives combined floodgate solenoid QH closes a floodgate switch.During too high or superpressure, single-chip microcomputer U3 the 12nd pin output trip signal makes the work of sub-switch circuit U4 lower end through R14 when power factor, and driving switch pipe T4 drives breaking coil QT switch separating brake.R30 is the photoelectrical coupler dropping resistor, and stabilivolt DW1 and capacitor C 13 are filter circuit of pressure-stabilizing, and resistance R 31, R32, R23 are the photoelectrical coupler operating resistance, and diode D5, D6 are divide-shut brake coil fly-wheel diode.RV2 is pressure-sensitive protective resistance; integrated circuit U1--24LC02 is the memory circuit of single-chip microcomputer; resistance R 6, R4, capacitor C 4 are decompression voltage regulator, and resistance R 3 and triode T1 and T2 are that display prevents flicker action, and crystal OS1, capacitor C 6, C7 are the crystal oscillating circuit of single-chip microcomputer.
Claims (1)
1, a kind of self contained far infrared and radio current sensor, it is made up of transmitter and receiver, it is characterized in that:
The formation of a, transmitter is: open core coil CT, current-to-voltage converting circuit D9-D12, voltage stabilization and current stabilization circuit U 9-U17, sample resistance R42 connects 17 pin of single-chip microcomputer U18 through amplifier U6A, open core coil CT connects 6 pin of single-chip microcomputer U18 through resistance R 34, amplifier U6B, 12 pin of single-chip microcomputer U18 divide two tunnel outputs, and one the tunnel connects the base stage of triode T5, output sending and receiving optical diode D7, the D8 of triode T5; Another road meets combined transmit element U19 through resistance R 44, and 2 human hair combing wastes of combined transmit element U19 are penetrated output;
The formation of b, receiver is: 220 volts of power supplys divide two tunnel inputs, and one the tunnel through rectification circuit D4, and energy-storage capacitor C is connected with switch transistor T 3, T4, and the output terminal of switch transistor T 3, T4 is connected with switching winding QT, closing coil QH; Another road meets transformer B1, rectification circuit D1,5 volts of mu balanced circuit U2 outputs, 10 couchers are made voltage, voltage signal inserts amplifier U5A through resistance R 1, the output of amplifier U5A connects the 4th pin of single-chip microcomputer U3, current signal is by the 4th pin input of receiving unit FYRF1, its the 2nd pin output meets amplifier U5B, the output of amplifier U5B connects the 6th pin of single-chip microcomputer U3, after single-chip microcomputer U3 handles, by 11 of single-chip microcomputer U3,12 pin meet sub-switch circuit U4,7 of single-chip microcomputer U3,13,16,17,18,21,22,23,24 pin sending and receiving optical diodes, by 26 of single-chip microcomputer U3,27,28 pin connection function key S1, S2, S3,25 of single-chip microcomputer U3,26 pin meet display U7, U8, U9, its output meets charactron BS1, BS2, BS3,14 of single-chip microcomputer U3, the output of 15 pin meets memory circuit U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01236454 CN2478115Y (en) | 2001-04-12 | 2001-04-12 | Self-feeding far infrared and radio current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01236454 CN2478115Y (en) | 2001-04-12 | 2001-04-12 | Self-feeding far infrared and radio current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2478115Y true CN2478115Y (en) | 2002-02-20 |
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ID=33649422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01236454 Expired - Fee Related CN2478115Y (en) | 2001-04-12 | 2001-04-12 | Self-feeding far infrared and radio current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2478115Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI418806B (en) * | 2011-01-12 | 2013-12-11 | Chunghwa Telecom Co Ltd | Radio intelligent inductive AC current measurement notification device |
| CN105866522A (en) * | 2016-05-30 | 2016-08-17 | 石家庄汇点科技有限公司 | Starting-type holographic high-pressure wireless current transformer |
| CN109375692A (en) * | 2018-11-08 | 2019-02-22 | 深圳航天科技创新研究院 | A kind of high-voltage linear source of stable pressure by current control |
-
2001
- 2001-04-12 CN CN 01236454 patent/CN2478115Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI418806B (en) * | 2011-01-12 | 2013-12-11 | Chunghwa Telecom Co Ltd | Radio intelligent inductive AC current measurement notification device |
| CN105866522A (en) * | 2016-05-30 | 2016-08-17 | 石家庄汇点科技有限公司 | Starting-type holographic high-pressure wireless current transformer |
| CN105866522B (en) * | 2016-05-30 | 2018-08-03 | 石家庄汇点科技有限公司 | Open-type holography high-voltage wireless current transformer |
| CN109375692A (en) * | 2018-11-08 | 2019-02-22 | 深圳航天科技创新研究院 | A kind of high-voltage linear source of stable pressure by current control |
| CN109375692B (en) * | 2018-11-08 | 2020-11-24 | 深圳航天科技创新研究院 | High-voltage linear voltage stabilizing source controlled by current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |