CN2765358Y - An alarm device for earth wire or shorting stub - Google Patents
An alarm device for earth wire or shorting stub Download PDFInfo
- Publication number
- CN2765358Y CN2765358Y CN 200520078376 CN200520078376U CN2765358Y CN 2765358 Y CN2765358 Y CN 2765358Y CN 200520078376 CN200520078376 CN 200520078376 CN 200520078376 U CN200520078376 U CN 200520078376U CN 2765358 Y CN2765358 Y CN 2765358Y
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- signal
- unit
- shorting stub
- circuit
- earth connection
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Abstract
The utility model relates to an alarm device for an earth wire or a shorting wire, which comprises a transmitting device which is connected with the alarm device by signal. Because the earth wire or the shorting wire are connected together for use, the utility model provides an effective and simple checking method for working personnel to check if the equipment lefts the earth wire and the shorting wire behind. The utility model can preferably prevent the electric equipment from generating short circuit accident caused by power transmission of the earth wire or the shorting wire.
Description
Technical field
The utility model relates to a kind of alarm device, relates in particular to a kind of alarm device that is used for earth connection or shorting stub.
Background technology
In the electric equipment maintenance process, device three-phase shortcircuit earth connection is that the staff prevents the reliable and secure measure of incoming call suddenly in the job site on the construction equipment.In carrying out the electrical test process, also often need to use earth connection with electric equipment ground connection, use shorting stub with the electric equipment short circuit.Therefore, earth connection and shorting stub are electric equipment maintenance, test necessary tool.But, after the electric equipment service work finishes, whether the staff can only by leaving over earth connection and shorting stub on the visual examination equipment, when especially many equipment overhaul simultaneously, if staff's general idea, probably earth connection or shorting stub are retained on the equipment, cause band ground wire or shorting stub to send electricity, cause the generation of electric equipment short circuit accident.
Summary of the invention
For the general idea that solves the staff may be retained in earth connection or shorting stub on the equipment, cause band earth connection or shorting stub to send the problem of electricity, the purpose of this utility model provides a kind of alarm device, be connected in earth connection or the shorting stub, before sending electricity, remind the staff whether to be with earth connection or shorting stub, to avoid the generation of equipment short circuit.
The technical scheme that the utility model adopted is: a kind of alarm device that is used for earth connection or shorting stub, and this alarm device comprises emitter, emitter is connected with the warning device signal.
Emitter comprises signal amplification unit, and signal amplification unit, signal modulating unit link to each other in proper order with the signal transmitter unit.
Emitter also comprises the signal encoding unit, and the signal encoding unit links to each other in proper order with signal amplification unit, signal modulating unit, signal transmitter unit.
Warning device comprises power supply, and power supply, signal receiving unit, signal driving unit and alarm link to each other in proper order.
Signal receiving unit comprises signal receiving circuit, and signal receiving circuit, signal amplification circuit, signal demodulating circuit and signal output apparatus are linked in sequence.
Signal receiving unit also comprises signal decoding circuit, and signal receiving circuit, signal amplification circuit, signal demodulating circuit, signal decoding circuit and signal output apparatus are linked in sequence.
The beneficial effects of the utility model are: the utility model and earth connection or shorting stub are coupled together use, for whether leave over earth connection on staff's checkout facility, shorting stub provides a kind of effective, easy inspection method, can prevent from preferably to send electricity and cause the generation of electric equipment short circuit accident with ground wire or shorting stub.
Description of drawings
Fig. 1 is that emitter connects block diagram;
Fig. 2 is the emitter circuit diagram;
Fig. 3 is signal encoding element circuit figure;
Fig. 4 is that warning device connects block diagram;
Fig. 5 is that signal receiving unit connects block diagram;
Fig. 6 is the signal receiving unit circuit diagram;
Fig. 7 is signal decoding circuit figure;
Fig. 8 is that warning device of the present utility model is installed in the schematic diagram on the three-phase shortcircuit earth connection;
Fig. 9 is that warning device of the present utility model is installed in the schematic diagram on the test earth connection;
Figure 10 is that warning device of the present utility model is installed in the schematic diagram in the test shorting stub.
Embodiment
Below by accompanying drawing and example the utility model is elaborated.
A kind of alarm device that is used for earth connection or shorting stub, this alarm device comprises emitter, emitter is connected with the warning device signal.
Among Fig. 1, emitter comprises signal amplification unit 10, and signal amplification unit 10, signal modulating unit 11 link to each other with signal transmitter unit 12 orders.
Emitter can also comprise signal encoding unit 13, and signal encoding unit 13 links to each other with signal amplification unit 10, signal modulating unit 11, signal transmitter unit 12 orders.Emitter circuit and the 13 supporting uses of signal encoding unit can be made into the emitter of band coding.
Fig. 2 provides a kind of circuit diagram of emitter, also can select the reflector or the remote controller that match with signal receiving unit 21 for use.Modulation signal adds from TXD, is added between transistor Q2 base stage and the emitter by current-limiting resistance R2, makes transistor Q2 conducting; When transistor Q2 conducting, transistor Q1 conducting thereupon, quartz-crystal resonator SAW work, the oscillator signal that produces is added to the base stage of transistor Q1, amplify by transistor Q1, capacitor C 2 is every straight coupling, and the signal after the modulation is again by the vibration electric wave form emission of antenna AN with certain frequency.Other element effect is respectively in the circuit: resistance R 1 is current-limiting resistance, and inductance L 1, L2 play the power supply filter action, and capacitor C 1 is a feedback capacity.
The IC of signal encoding unit 13 can select 2262,5026 for use, HCS301, HCS300 etc.Fig. 3 provides the circuit diagram of the IC2262 that signal encoding unit 13 selects for use, the 1-8 pin of IC2262 is ternary (VCC, GND, sky) coding pin, and the 10-13 pin is four data pin, by four switch controls, LED is the effective indicator light of coding, and 17 pin are for receiving the effective status indication.When not having coding IC, modulation signal gets final product from the TXD adding.
Referring to Fig. 4, warning device comprises power supply 20, and power supply 20, signal receiving unit 21, signal driving unit 22 and alarm 23 orders link to each other.
Among Fig. 5, signal receiving unit 21 comprises signal receiving circuit 30, and signal receiving circuit 30, signal amplification circuit 31, signal demodulating circuit 32 are linked in sequence with signal output apparatus 34.
Fig. 6 provides a kind of circuit diagram of signal receiving unit 21, can select for use four tunnel overload to give birth to the decoding dash receiver.ANT receives signal by antenna, the frequency selection circuit that capacitor C 2 and inductance L 1 are formed is input to the signal of certain frequency the base stage of transistor Q1 by capacitor C 3 couplings, resistance R 1, resistance R 2 are transistor Q1 base biasing resistor, and resistance R 3 is a transistor Q1 collector electrode current-limiting resistance; The fixed frequency signal that receives amplifies by transistor Q1, forms resistance-capacitance coupling output by capacitor C 4, resistance R 4; Resistance R 5, resistance R 6 are transistor Q2 base biasing resistor simultaneously, and resistance R 7 is a transistor Q2 collector electrode current-limiting resistance; Fixed frequency signal after amplifying makes its conducting by capacitor C 5 every the base stage that straight coupling is input to transistor Q2, the oscillator work that inductance L 2, capacitor C 6, capacitor C 7 are formed, and capacitor C 8 is a feedback capacity, to stablize line work; Transistor Q2 exports the oscillator signal of another fixed frequency that oscillator produces by filter inductance L3; The oscillator signal of two fixed frequencies that transistor Q1, transistor Q2 export respectively mixes forms another frequency signal, by the filter circuit that LC coupling circuit and R9, the capacitor C 11 of resistance R 8, capacitor C 10 compositions are formed, the hybrid frequency signal is inputed to 5 pin of demodulator LM358; Resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15, capacitor C 12 are the peripheral circuit of demodulator LM358, guarantee demodulator LM358 operate as normal; The hybrid frequency signal through demodulator LM358 demodulation after from its 1 pin output, the square-wave signal of promptly separating behind the ripple is exported from RXD.
Fig. 7 provides a kind of signal decoding circuit 33 to select the circuit diagram of IC2272 for use, and 17 pin of IC2272 are for receiving the effective status indication, and the 10-13 pin is decoded four data pin, and the 1-8 pin is ternary (VCC, GND, sky) coding pin.
The operation principle of alarm device: check that ground connection (short circuit) line is whether during complete removal, the staff presses the emitter button, triggering signal inputs to the TXD end of signal amplification unit 10 (as Fig. 2), make transistor Q2 conducting, transistor Q1 conducting, the quartz-crystal resonator SAW of signal modulating unit 11 work, the oscillator signal of generation amplifies by transistor Q1, by every straight coupling capacitance C2 the vibration electric wave of the certain frequency antenna AN from signal transmitter unit 12 being launched.If still leave over the earth connection or the shorting stub of band alarm device this moment on the equipment, signal receiving unit 21 (as Fig. 6) in the warning device on ground connection (short circuit) line, this frequency signal that the frequency selection circuit of forming by capacitor C 2 and inductance L 1 receives antenna ANT is input to the base stage of transistor Q1 through capacitor C 3 couplings, amplify by transistor Q1, form resistance-capacitance coupling output by capacitor C 4, resistance R 4; This signal makes transistor Q2 conducting simultaneously, the oscillator work that inductance L 2, capacitor C 6, capacitor C 7 are formed, and transistor Q2 exports the oscillator signal of another fixed frequency that oscillator produces by filter inductance L3; The oscillator signal of two fixed frequencies that transistor Q1, transistor Q2 export respectively mixes forms another frequency signal, the filter circuit that the LC coupling circuit of forming by resistance R 8, capacitor C 10 and R9, capacitor C 11 are formed, the hybrid frequency signal is inputed to 5 pin of demodulator LM358, through exporting from its 1 pin after the demodulator LM358 demodulation, the square-wave signal of promptly separating behind the ripple is exported to signal driving unit 22 from RXD, amplify by signal driving unit 22, give alarm 23 input correspondent voltage, remind the staff thereby drive alarm equipment alarm.
In actual applications, each components and parts of warning device can be made the rectangle capsule with insulation board is closed.
Referring to Fig. 8, warning device box 1 of the present utility model is applied on the three-phase shortcircuit earth connection 2, warning device box 1 is installed in the earth terminal 3 of common earth connection 2, fixes by metal clamps.When overhaul of the equipments finish send electricity before, the staff is by the reflector in setting about, if send and left over earth connection and shorting stub on the electric equipment, earth connection and the warning device in the shorting stub left over will be reported to the police, send on electric personnel's equipment with prompting and to still have earth connection and shorting stub, send electricity again after please checking dismounting, thereby prevented to be with ground wire or shorting stub to send the accident of electricity to take place.
Referring to Fig. 9, warning device box 1 of the present utility model is installed on the test earth connection 5, warning device box 1 is fixed on the bobbin 6 of test earth connection by screw.When overhaul of the equipments finish send electricity before, the staff is by the reflector in setting about, if send and left over earth connection and shorting stub on the electric equipment, earth connection and the warning device in the shorting stub left over will be reported to the police, send on electric personnel's equipment with prompting and to still have earth connection and shorting stub, send electricity again after please checking dismounting, thereby prevented to be with ground wire or shorting stub to send the accident of electricity to take place.
Referring to Figure 10, warning device box 1 of the present utility model is installed in the test shorting stub 8, warning device box 1 links to each other with shorting stub by insulation rope 9.When overhaul of the equipments finish send electricity before, the staff is by the reflector in setting about, if send and left over earth connection and shorting stub on the electric equipment, earth connection and the warning device in the shorting stub left over will be reported to the police, send on electric personnel's equipment with prompting and to still have earth connection and shorting stub, send electricity again after please checking dismounting, thereby prevented to be with ground wire or shorting stub to send the accident of electricity to take place.
Claims (6)
1. an alarm device that is used for earth connection or shorting stub is characterized in that, this alarm device comprises emitter, and emitter is connected with the warning device signal.
2. a kind of alarm device that is used for earth connection or shorting stub according to claim 1, it is characterized in that, said emitter comprises signal amplification unit (10), and signal amplification unit (10), signal modulating unit (11) link to each other with signal transmitter unit (12) order.
3. a kind of alarm device that is used for earth connection or shorting stub according to claim 2, it is characterized in that, said emitter also comprises signal encoding unit (13), and signal encoding unit (13) link to each other with signal amplification unit (10), signal modulating unit (11), signal transmitter unit (12) order.
4. a kind of alarm device that is used for earth connection or shorting stub according to claim 1, it is characterized in that, said warning device comprises power supply (20), and power supply (20), signal receiving unit (21), signal driving unit (22) and alarm (23) order link to each other.
5. a kind of alarm device that is used for earth connection or shorting stub according to claim 4, it is characterized in that, said signal receiving unit (21) comprises signal receiving circuit (30), and signal receiving circuit (30), signal amplification circuit (31), signal demodulating circuit (32) are linked in sequence with signal output apparatus (34).
6. a kind of alarm device that is used for earth connection or shorting stub according to claim 4, it is characterized in that, said signal receiving unit (21) comprises signal decoding circuit (33), and signal receiving circuit (30), signal amplification circuit (31), signal demodulating circuit (32), signal decoding circuit (33) are linked in sequence with signal output apparatus (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078376 CN2765358Y (en) | 2005-02-21 | 2005-02-21 | An alarm device for earth wire or shorting stub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078376 CN2765358Y (en) | 2005-02-21 | 2005-02-21 | An alarm device for earth wire or shorting stub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2765358Y true CN2765358Y (en) | 2006-03-15 |
Family
ID=36168272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520078376 Expired - Fee Related CN2765358Y (en) | 2005-02-21 | 2005-02-21 | An alarm device for earth wire or shorting stub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2765358Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103841713A (en) * | 2012-11-27 | 2014-06-04 | 深圳市海洋王照明工程有限公司 | Wireless remote control flashlight |
-
2005
- 2005-02-21 CN CN 200520078376 patent/CN2765358Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103841713A (en) * | 2012-11-27 | 2014-06-04 | 深圳市海洋王照明工程有限公司 | Wireless remote control flashlight |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060315 Termination date: 20140221 |