CN2308924Y - Alarm - Google Patents
Alarm Download PDFInfo
- Publication number
- CN2308924Y CN2308924Y CN 97235914 CN97235914U CN2308924Y CN 2308924 Y CN2308924 Y CN 2308924Y CN 97235914 CN97235914 CN 97235914 CN 97235914 U CN97235914 U CN 97235914U CN 2308924 Y CN2308924 Y CN 2308924Y
- Authority
- CN
- China
- Prior art keywords
- relay
- circuit
- coil
- lock
- alarm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Alarm Systems (AREA)
Abstract
The utility model relates to an alarm, comprising a power supply, a trigger locking circuit and an alarm circuit. The utility model is characterized in that the trigger locking circuit is formed by the connection of two relays; the contacts A of the two relays are connected with the E end of the power supply; the normally closed contact B of the relay K < 1 > is connected with the normally open contact C of the relay K < 2 > and one end of a coil; the other end of the coil of the relay K < 2 > is connected with the F end of the power supply; a reset switch SA < 3 > is arranged on the loop of the coil of the relay K < 2 >; the coil of the relay K < 1 > is connected with both ends of the power supply by the normally closed trigger switch SA < 2 >; the normally open contact C of the relay K < 2 > is the output end of the locking circuit, used for outputting signals to the alarm circuit.
Description
The utility model relates to a kind of alarm that has lock function.
Existing alarm is of a great variety, its basic structure is made up of power supply, trigger circuit and warning circuit three parts, trigger circuit comprise that mostly touching switch and lock-in circuit constitutes, the action of trigger switch, make the lock-in circuit upset, output one weighing apparatus is decided signal, and this moment, trigger switch did not influence this output signal at which kind of state, have only by the reset switch in the lock-in circuit, just can make it be turned to armed state.This lock-in circuit generally is made of the electronic component or the integrated package that separate, and action is rapidly sensitive, but is prone to misoperation.
The purpose of this utility model is a kind of alarm that utilizes the relay locking of design.
Task of the present utility model is done in such a way that the alarm of being made up of power supply, triggering lock-in circuit and warning circuit, and it is characterized in that triggering lock-in circuit is to be formed by connecting by two relays, and the contact A of two relays connects the E end of power supply, relay K
1Normally closed contact B and relay K
2Normally opened contact C and an end of coil be connected relay K
2The F end of another termination power of coil is in relay K
2Wire loop is provided with reset switch S
3, relay K
1Coil is through normally closed trigger switch SA
2Connect both ends of power, relay K
2Normally opened contact C be the output terminal of lock-in circuit, output signal to warning circuit.Relay K
1Play trigger action, when normally closed switch disconnects relay K
1Coil losing electricity, its normally closed contact gets electric, makes relay K
2Coil gets electric, normally closed contact conducting, and formation self-locking state, relay K at this moment
1Any action that reaches normally closed switch does not influence this state, from relay K
2Normally opened contact C end output one signal is given warning circuit, drives warning circuit work.
The utility model is simple in structure, and is reasonable in design, forms lock-in circuit by two relays, has high reliability, and the few characteristics of misoperation.
Below in conjunction with concrete legend the utility model is described further:
Accompanying drawing is the structural representation of the utility model
With reference to accompanying drawing, this example provides a kind of three the tunnel and triggers the alarm that lock-in circuit is formed, and the working power that triggers lock-in circuit can be AC power or direct supply, when adopting direct supply, E termination positive pole, F termination negative pole, the contact A of two relays connects the E end of power supply, relay K
1Normally closed contact B and relay K
2Normally opened contact C and an end of coil be connected relay K
2The F end of another termination power of coil is in relay K
2Wire loop is provided with reset switch SA
3, relay K
1Coil is through normally closed trigger switch SA
2Connect both ends of power, relay K
2Normally opened contact C be the output terminal of lock-in circuit, output signal to warning circuit.Reset switch SA
3When start reporting to the police, disconnect earlier, then be in normally off, and close single channel also can be when triggering lock-in circuit with reset switch SA
3Disconnect, remove when reporting to the police, connect reset switch SA after the disconnection again
3Can reset, alarm is ready once more, relay K
1Coil is through normally closed trigger switch SA
2Connect both ends of power, normally closed trigger switch SA
2Can be the switch of form such as magnetic control or the on-off circuit of forming by circuit such as sensors, as long as switch S A
2Disconnect, promptly be in alarm condition, conducting is for awaiting orders, at normally closed trigger switch SA
2Go up and be connected to a switch S A
1, control voluntarily by the user, if switch S A
1Closure, switch S A
2Promptly ineffective, relay K on this basis
2The switch S B of normally opened contact C end and power supply E termination one fine motion character, as long as triggering and conducting its, relay K
2Also can produce lock first, be in alarm condition.Be connected to unidirectional conducting diode VD on the output terminal of lock-in circuit, this output terminal that can make multichannel trigger lock-in circuit is attempted by the input end of warning circuit, and a shared warning circuit becomes multichannel control alarm.In relay K
2The coil two ends and be connected to light emitting diode VH, light emitting diode VH has promptly constituted the simplest optical alarm circuit, be and trigger lock-in circuit one to one, if need other action as acoustic alarm or drive other device action, the input end that connects warning circuit or driving circuit at triggering lock-in circuit output terminal gets final product.This example is triggering lock-in circuit output relay termination K
3Coil, then the input end of level warning circuit is connected on the normally opened contact of relay K 3, by relay lock-in circuit and warning circuit is isolated, and makes two parts circuit can select optimal separately power supply power supply, the adaptation occasion of increase alarm for use.
Above-mentioned alleged microswitch SB and normally closed trigger switch SA
2The also electronic switch that can form by electronic circuits such as sensors.
Claims (6)
1, a kind of alarm of forming by power supply, triggering lock-in circuit and warning circuit, it is characterized in that triggering lock-in circuit is to be formed by connecting by two relays, the contact A of two relays connects the E end of power supply, relay K
1Normally closed contact B and relay K
2Normally opened contact C and an end of coil be connected relay K
2The F end of another termination power of coil is in relay K
2Wire loop is provided with reset switch SA
3, relay K
1Coil is through normally closed trigger switch SA
2Connect both ends of power, relay K
2Normally opened contact C be the output terminal of lock-in circuit, output signal to warning circuit.
2, alarm according to claim 1 is characterized in that triggering on the output terminal of lock-in circuit and is connected to unidirectional conducting diode VD.
3, alarm according to claim 1 is characterized in that relay K
2The coil two ends and be connected to light emitting diode VH.
4,, it is characterized in that the output terminal of multichannel triggering lock-in circuit is attempted by the input end of warning circuit, a shared alarm according to claim 1,2 or 3 described alarms.
5, alarm according to claim 1 is characterized in that normally closed trigger switch SA
2Go up and be connected to switch S A
1
6,, it is characterized in that in the E of power supply end and relay K according to claim 1,2,3 or 5 described alarms
2Normally opened contact C between and be connected to microswitch SB.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 97235914 CN2308924Y (en) | 1997-04-28 | 1997-04-28 | Alarm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 97235914 CN2308924Y (en) | 1997-04-28 | 1997-04-28 | Alarm |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2308924Y true CN2308924Y (en) | 1999-02-24 |
Family
ID=33946905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 97235914 Expired - Fee Related CN2308924Y (en) | 1997-04-28 | 1997-04-28 | Alarm |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2308924Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102934520A (en) * | 2010-06-08 | 2013-02-13 | 皇家飞利浦电子股份有限公司 | Failsafe lighting system |
-
1997
- 1997-04-28 CN CN 97235914 patent/CN2308924Y/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102934520A (en) * | 2010-06-08 | 2013-02-13 | 皇家飞利浦电子股份有限公司 | Failsafe lighting system |
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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 |