CN201716803U - Time-delay alarm circuit - Google Patents
Time-delay alarm circuit Download PDFInfo
- Publication number
- CN201716803U CN201716803U CN201020221357XU CN201020221357U CN201716803U CN 201716803 U CN201716803 U CN 201716803U CN 201020221357X U CN201020221357X U CN 201020221357XU CN 201020221357 U CN201020221357 U CN 201020221357U CN 201716803 U CN201716803 U CN 201716803U
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- time
- delay circuit
- alarm
- microswitch
- alarm device
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Abstract
The utility model relates to an alarm device, in particular to a time-delay alarm circuit for preventing the false alarm by a multi-detecting mechanism. A detecting device and a time-delay circuit are used for controlling the alarm device simultaneously. The time-delay circuit is connected with a microswitch to form into a loop, and the microswitch is linked with a door lock. When a person stop at front of the door, the detecting device starts to work and activates the alarm device, the alarm device is only activated rather than alarming, the microswitch in a lock hole is turned on when the person locks the door, the time-delay circuit is switched on, the time-delay circuit is switched on to start to time, and the alarm device starts to alarm if the door lock is not opened within a set time, so that the alarm device achieves the aim of alarming.
Description
Technical field
The utility model relates to a kind of warning device that is used for, particularly a kind of machine-processed delayed alarm circuit that prevents false alarm of multiple detection of implementing.
Background technology
More existing warning systems are reported by mistake easily as vehicle-mounted alarm system, antitheft door warning system etc., as long as because there is the people to enter in the alarm range of warning system detection, warning system just thinks that generation is unusual and skirl sound voluntarily to carry out alarm.
Yet passerby also tends to be strayed into the alarm range of warning system, therefore, how to prevent the problem that wrong report need solve us.
In view of the above problems, the utility model relates to a kind of delayed alarm circuit.It has technical characterictic as mentioned below, to solve existing problem.
The utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of simple in structure, warning accuracy rate height, the good delayed alarm circuit of practical function.
A kind of delayed alarm circuit of the present utility model comprises:
One warning device;
The sniffer that is connected with described warning device transmission;
The delay circuit that is connected with described warning device transmission, and
Connect to form the microswitch in loop with described delay circuit.
Above-mentioned delayed alarm circuit is characterized in that, described sniffer is a microwave detector.
Concrete workflow is that sniffer is installed on door, and sniffer and delay circuit are controlled warning device simultaneously.Delay circuit and microswitch connect and compose the loop, and microswitch and door lock interlocking.When the people stops in front of the door, the sniffer of this device is started working and is activated warning device, but warning device only activates and does not report to the police, only the microswitch in the lockhole is opened when the people unblanks, the on-delay circuit, and delay circuit leaves, beginning work is clocked, as not being unlocked at the setting-up time Inner door lock, then warning device begins to report to the police, thereby has reached the purpose of reporting to the police.
Description of drawings
Fig. 1 is the structural representation of delayed alarm circuit.
Embodiment
According to claim of the present utility model and the disclosed content of utility model content, embodiment specific as follows is described for the technical solution of the utility model:
Referring to shown in Figure 1, a kind of delayed alarm circuit of the present utility model comprises:
One warning device; The sniffer that is connected with described warning device transmission, the preferred homemade TX982 type microwave detector of sniffer (also being radar detection module, peoplesniffer), it has included microwave emission, reception, has reached circuit such as signal amplification, identification, can detect movement human or object in the certain limit on every side with the noncontact form, and convert high level signal output to.
With the delay circuit that described warning device transmission is connected, delay circuit adopts 555 time-base integrated circuits and peripheral Resistor-Capacitor Unit resistance R and capacitor C and relay formation.Relay K control next stage alarm circuit is arranged.
Connect to form the microswitch in loop with described delay circuit, microswitch is installed in the door lock, as long as the twisting key, lock core has any rotation, can the on-delay circuit, and delay circuit can carry out timing.
Concrete workflow is that sniffer is installed on door, and sniffer and delay circuit are controlled warning device simultaneously.Delay circuit and microswitch connect and compose the loop, and microswitch and door lock interlocking.When the people stops in front of the door, the sniffer of this device is started working and is activated warning device, but warning device only activates and does not report to the police, only the microswitch in the lockhole is opened when the people unblanks, the on-delay circuit, and delay circuit leaves, beginning work is clocked, as not being unlocked at the setting-up time Inner door lock, then warning device begins to report to the police, thereby has reached the purpose of reporting to the police.
The foregoing description only is giving an example of the optional embodiment of the utility model, and its related feature only is used for explanation and sets forth the technical solution of the utility model, and is not used in qualification protection domain of the present utility model.
Claims (2)
1. a delayed alarm circuit is characterized in that, comprising:
One warning device;
The sniffer that is connected with described warning device transmission;
The delay circuit that is connected with described warning device transmission, and
Connect to form the microswitch in loop with described delay circuit.
2. delayed alarm circuit as claimed in claim 1 is characterized in that, described sniffer is a microwave detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020221357XU CN201716803U (en) | 2010-06-09 | 2010-06-09 | Time-delay alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020221357XU CN201716803U (en) | 2010-06-09 | 2010-06-09 | Time-delay alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201716803U true CN201716803U (en) | 2011-01-19 |
Family
ID=43462808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020221357XU Expired - Fee Related CN201716803U (en) | 2010-06-09 | 2010-06-09 | Time-delay alarm circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201716803U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285524A (en) * | 2011-04-13 | 2011-12-21 | 南通烟滤嘴有限责任公司 | Stack moving and transporting system of tows |
| CN102662103A (en) * | 2012-05-11 | 2012-09-12 | 成都安可信电子股份有限公司 | Method for preventing false alarms of alarm device |
-
2010
- 2010-06-09 CN CN201020221357XU patent/CN201716803U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285524A (en) * | 2011-04-13 | 2011-12-21 | 南通烟滤嘴有限责任公司 | Stack moving and transporting system of tows |
| CN102285524B (en) * | 2011-04-13 | 2013-06-19 | 南通烟滤嘴有限责任公司 | Stack moving and transporting system of tows |
| CN102662103A (en) * | 2012-05-11 | 2012-09-12 | 成都安可信电子股份有限公司 | Method for preventing false alarms of alarm device |
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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: 20110119 Termination date: 20110609 |