CN2793991Y - Phonetic alrming device of rear gateway of hand-in hand switching cabinet - Google Patents
Phonetic alrming device of rear gateway of hand-in hand switching cabinet Download PDFInfo
- Publication number
- CN2793991Y CN2793991Y CN 200520071393 CN200520071393U CN2793991Y CN 2793991 Y CN2793991 Y CN 2793991Y CN 200520071393 CN200520071393 CN 200520071393 CN 200520071393 U CN200520071393 U CN 200520071393U CN 2793991 Y CN2793991 Y CN 2793991Y
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- pin
- hand
- microphone
- resistance
- serially connected
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Abstract
The utility model discloses a phonetic alarm device of a rear gateway of a hand-in hand switch cabinet. A door switch is connected with a rear gateway, and a normally opened contact of the door switch is connected between a power supply pin of a speech circuit and the positive pole of a power supply. An output pin of a loudspeaker is connected with a resistor, both ends of the resistor are connected with an input pin of a power amplifying circuit and an output pin of the power amplifying circuit is connected with the loudspeaker. A capacitor and a stop button are connected in series between an edge triggering playback pin and a recording indicating pin, a record button is connected in series between a recording pin and the power supply pin and the capacitor and a microphone are connected in series between an input pin of the microphone and a referential pin of the microphone. When a person wants to enter a space after the rear gateway is opened, the utility model can sound an alarm call immediately in order to remind workers to check circuits and thus the accident of electric shock is avoided. The utility model has the advantages of simple structure, few peripheral elements and easy fabrication. The phonetic alarm device of a rear gateway of a hand-in hand switch cabinet can be used as an alarm device for a hand-in hand switch cabinet and the high and low voltage switch cabinets of users and enterprises.
Description
Technical field
The utility model relates to a kind of switch cubicle alarm device of supply line hand in hand.
Background technology
The switch cubicle with " five is anti-" function that uses now has " five is anti-" function for general feeder line.But for the supply line that hands in hand, when switch is in maintenance or cold standby state, in case because of certain reason causes the line side disconnecting link charged, as pole oil switch separating brake do not open, the scissors crossing circuit falls rod disconnection, the maintainer is not yet done to on-the-spot operational mode, mistuning degree, misoperation etc., personnel will cause the accident of human electric shock after entering at interval.
Summary of the invention
The purpose of this utility model is that a net door phonic warning device behind a kind of hand in hand switch cubicle will be provided, and this device can send alarm call immediately when having the people will back net door to open to desire to enter at interval, and the prompting staff carries out electrical verification, thereby avoids the generation of electric shock accidents.
The purpose of this utility model is achieved in that this device comprises door switch and sound circuit, door switch is connected on the back net door of switch cubicle, be serially connected with the door switch normally opened contact between the supply pin of sound circuit and the positive source, the supply pin of sound circuit connects power cathode by parallel resistor and electric capacity, the oscillation resistance pin of sound circuit connects power cathode by resistance, the loud speaker output pin of sound circuit is serially connected with resistance, the two ends of resistance are connected with the power amplifier input pin, the power amplifier output pin is connected to loud speaker, the automatic gain pin of sound circuit connects power cathode by electric capacity, the edge of sound circuit triggers between playback pin and the recording indication pin and is serially connected with electric capacity and stop button, the edge triggers the playback pin and connects power cathode by parallel resistor and diode, be serially connected with record button between the recording pin of sound circuit and the supply pin, the microphone input pin of sound circuit and microphone are with reference to being serially connected with electric capacity and microphone between the pin, be connected between one end of microphone and the supply pin and be serially connected with two resistance, be serially connected with electric capacity between contact between two resistance and the recording indication pin, be serially connected with resistance between the other end of microphone and the recording indication pin, the positive pole of recording indication pin and diode joins, and the negative pole and the supply pin of diode join.
Of the present utility modelly when having the people will back net door to open to desire to enter at interval, can send alarm call immediately, remind the staff to carry out electrical verification, thereby avoid the generation of electric shock accidents.It is simple in structure, and peripheral cell is few, makes easily.
Description of drawings
Fig. 1 is the circuit block diagram of an embodiment of the present utility model.
Fig. 2 is the circuit diagram of Fig. 1.
Embodiment
In Fig. 2, be serially connected with door switch normally opened contact SK1 and SK2 in parallel between the supply pin VCC of sound circuit ISD1820 and the power supply BAT positive pole, supply pin VCC connects power supply BAT negative pole by parallel resistor R6 and capacitor C 7, and oscillation resistance pin ROSC connects power supply BAT negative pole by resistance R 2.
Be serially connected with resistance R 7 between the loud speaker output pin SP+ of sound circuit ISD1820 and the SP-, the left end of resistance R 7 links to each other with the input pin FC1 of power amplifier MC34119 with resistance R 8 by the capacitor C 8 of series connection, and the right-hand member of resistance R 7 links to each other with the input pin WIN of power amplifier MC34119 with resistance R 9 by the capacitor C 9 of series connection.Be connected to resistance R 10 between power amplifier input pin WIN and the output pin VO1, be serially connected with loud speaker SPEAKER between power amplifier output pin VO1 and the VO2.
The automatic gain pin AGC of sound circuit ISD1820 connects power supply BAT negative pole by capacitor C 6, the edge triggers between playback pin PLAYE and the recording indication pin RECLED and is serially connected with capacitor C 2 and stop button S1, and the edge triggers playback pin PLAYE and connects power supply BAT negative pole by parallel resistor R5 and diode D1.Be serially connected with record button S2 between the recording pin REC of sound circuit ISD1820 and the supply pin VCC.Microphone input pin MIC and microphone are with reference to being serially connected with capacitor C 5, microphone M and capacitor C 4 between the pin MICREF.Be connected between the negative terminal of microphone M and the supply pin VCC and be serially connected with two resistance R 1 and R3, be serially connected with capacitor C 1 between contact between two resistance R 1 and the R3 and the recording indication pin RECLED.Be serially connected with resistance R 4 between the anode of microphone M and the recording indication pin RECLED, the positive pole of recording indication pin RECLED and diode D2 joins, and the negative pole of diode D2 and supply pin VCC join.
Door switch adopts LXK3-20S/T mechanical trip limit switch.Power supply adopts the CR123A lithium battery, can use more than 3 years.
When after opening high-tension switch cabinet, netting door, door switch normally opened contact SK1 and SK2 closure, the phonic warning device promptly carries out the loop play suggestion voice automatically; When not needing voice reminder, can press stop button S1, save electric energy.
Claims (1)
1. net door phonic warning device behind the switch cubicle hand in hand for one kind, this device comprises door switch and sound circuit, it is characterized in that door switch is connected on the back net door of switch cubicle, be serially connected with the door switch normally opened contact between the supply pin of sound circuit and the positive source, supply pin connects power cathode by parallel resistor and electric capacity, the oscillation resistance pin connects power cathode by resistance, the loud speaker output pin is serially connected with resistance, the two ends of resistance are connected with the power amplifier input pin, the power amplifier output pin is connected to loud speaker, the automatic gain pin connects power cathode by electric capacity, the edge triggers between playback pin and the recording indication pin and is serially connected with electric capacity and stop button, the edge triggers the playback pin and connects power cathode by parallel resistor and diode, be serially connected with record button between recording pin and the supply pin, microphone input pin and microphone are with reference to being serially connected with electric capacity and microphone between the pin, be connected between one end of microphone and the supply pin and be serially connected with two resistance, be serially connected with electric capacity between contact between two resistance and the recording indication pin, be serially connected with resistance between the other end of microphone and the recording indication pin, the positive pole of recording indication pin and diode joins, and the negative pole and the supply pin of diode join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520071393 CN2793991Y (en) | 2005-04-30 | 2005-04-30 | Phonetic alrming device of rear gateway of hand-in hand switching cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520071393 CN2793991Y (en) | 2005-04-30 | 2005-04-30 | Phonetic alrming device of rear gateway of hand-in hand switching cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2793991Y true CN2793991Y (en) | 2006-07-05 |
Family
ID=36821128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520071393 Expired - Fee Related CN2793991Y (en) | 2005-04-30 | 2005-04-30 | Phonetic alrming device of rear gateway of hand-in hand switching cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2793991Y (en) |
-
2005
- 2005-04-30 CN CN 200520071393 patent/CN2793991Y/en not_active Expired - Fee Related
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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 |