CN2819340Y - Active infrared transmitter - Google Patents
Active infrared transmitter Download PDFInfo
- Publication number
- CN2819340Y CN2819340Y CN 200520045234 CN200520045234U CN2819340Y CN 2819340 Y CN2819340 Y CN 2819340Y CN 200520045234 CN200520045234 CN 200520045234 CN 200520045234 U CN200520045234 U CN 200520045234U CN 2819340 Y CN2819340 Y CN 2819340Y
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- China
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- control circuit
- active infrared
- delay control
- infrared transmitter
- input end
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Abstract
The utility model discloses an active infrared transmitter which comprises components in sequential connection, such as a low-frequency pulse generator, a carrier generator, an infrared emission output stage, an infrared transmitting tube and an optical focusing system. The utility model is characterized in that the active infrared transmitter also comprises an anti-dismounting switch and a delay control circuit, wherein the anti-dismounting switch is connected with the input end of the delay control circuit, and the output end of the delay control circuit is connected to the input end of the low-frequency pulse generator, or connected with an input end of the carrier generator, or connected with an input end of the infrared emission output stage. An alarm signal which is entirely transmitted by the transmitter is delivered to an active infrared receiver, and circumscribed signal lines are not needed to transmit signal to an alarm host machine. When applied into a peripheral protection system, wiring connection is greatly reduced, the system stability and the maintenance efficiency are improved, and the construction cost is lowered.
Description
Technical field
The utility model relates to a kind of active infrared transmitter.
Background technology
The active infrared transmitter usually and the active infrared receiver be used, as active infrared intrsion detector.
Active infrared transmitter in the past as shown in Figure 1, comprise the low-frequency pulse producer 11, carrier generator 12, infrared emission output stage 13, infrared transmitting tube 14 and the optical focusing system 15 that are linked in sequence, also comprise tamper circuit 16, its output terminal is connected with outer signal line 41; Low-frequency pulse producer 11 in the active infrared transmitter produces a low-frequency pulse square wave, and the audio oscillation ripple that carrier generator 12 produces is modulated, and makes it to produce corresponding modulating wave and drives infrared emission output stage 13 then and send infrared beam.The output terminal of tamper circuit 16 is connected with outer signal line 41.
The active infrared receiver that is used with the active infrared transmitter receives the infrared beam that comprises modulation signal that the active infrared transmitter sends, in case the emission light beam occurring is interdicted, the active infrared receiver can't receive modulation signal, it can send alerting signal, trigger corresponding warning port actuating of relay output trigger pip, send corresponding alert news by main control system.
The action principle of tamper circuit 16 is, when the artificial destruction transmitter house, the relay that outer shell pressure is in conducting state loses pressure and flicks, and its state becomes disconnection, this state is transferred to alarm host machine 40 by outer signal line 41, produces corresponding alert news.
Though this active infrared transmitter in the past has generation and transmits the effect of restricted speed signal when shell is destroyed, but because the restriction of its structure, need the tamper circuit of each transmitter all to connect and be used to transmit the extra signal wire of alerting signal to alarm host machine, when the active infrared intrsion detector that comprises this active infrared transmitter is applied in the border guard system, each active infrared transmitter all need to connect at least one independently signal wire to the burglar alarm main frame, when in the system a plurality of detector being arranged, a plurality of transmitters just need to connect many signal wires to the burglar alarm main frame, a large amount of wiring will make the bad stability of system, debugging cost, construction cost raises, and construction period is longer.
Summary of the invention
The utility model provides a kind of active infrared transmitter for addressing the above problem, and this transmitter does not need to connect the signal wire that is used to transmit alerting signal.
The utility model is to address the above problem the technical scheme of taking to provide a kind of active infrared transmitter, comprise the low-frequency pulse producer, carrier generator, infrared emission output stage, infrared transmitting tube and the optical focusing system that are linked in sequence, be characterized in: also comprise breaking-proof switch and delay control circuit, this breaking-proof switch is connected this delay control circuit input end, this delay control circuit output terminal is connected with this low-frequency pulse producer input end, perhaps be connected with this carrier generator input end, perhaps the input end with this infrared emission output stage is connected.
This breaking-proof switch has the resilient contact of this delay control circuit work of control.Be provided with a thimble with this resilient contact corresponding position on this active infrared transmitter house, when this active infrared transmitter house covered, this thimble propped up this resilient contact and makes it to press down, and this delay control circuit is not worked; When taking away this active infrared transmitter house, this thimble leaves this resilient contact, makes this delay control circuit work, sends the control signal of a lasting setting-up time.
This control signal inputs to this low-frequency pulse producer, carrier generator or infrared emission output stage, makes the three have a tentative job in setting-up time at least, thereby transmitter does not have infrared carrier signal and sends.
The active infrared receiver that is used with the active infrared transmitter receives the infrared beam that comprises modulation signal that the active infrared transmitter sends, in case having infrared beam, do not send by transmitter, the active infrared receiver can't receive modulation signal and send alerting signal, trigger corresponding warning port actuating of relay output trigger pip, send corresponding alert news by main control system.
Active infrared transmitter of the present utility model will send the task of alerting signal and all give the active infrared receiver, therefore do not need the external signal wire that is used to transmit alerting signal, it is applied in the border guard system can reduce wiring in a large number, thereby can reduce fault debugging cost and construction cost.
Description of drawings
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing, description of drawings is as follows:
Fig. 1 is existing active infrared transmitter internal circuit configuration block diagram;
Fig. 2 is the active infrared transmitter internal circuit configuration block diagram of the utility model first embodiment;
Fig. 3 is the active infrared transmitter internal circuit configuration block diagram of the utility model second embodiment;
Fig. 4 is the active infrared transmitter internal circuit configuration block diagram of the utility model the 3rd embodiment;
Fig. 5 is an embodiment active infrared transmitter external form figure of the present utility model.
Embodiment
See also Fig. 2, the active infrared transmitter of the utility model first embodiment comprises low-frequency pulse producer 11, carrier generator 12, infrared emission output stage 13, infrared transmitting tube 14, optical focusing system 15, each several part is linked in sequence, also comprise breaking-proof switch 26 and delay control circuit 27, breaking-proof switch 16 is connected the input end of delay control circuit 27, the output terminal of delay control circuit 27 is connected with low-frequency pulse producer 11, as the control input of low-frequency pulse producer 11.
Delay control circuit 27 of the present utility model can be an integrated circuit (IC) chip, also can be made of discrete component.
Active infrared transmitter of the present utility model adopts 30 power supplies of common power supply, and this power supply 30 can be direct current or AC power, and present embodiment adopts the 18V AC power.
In second embodiment shown in Figure 3, the output terminal of delay control circuit 27 can be connected with carrier generator 12 input ends, as the control input of carrier generator 12.In the 3rd embodiment shown in Figure 4, delay control circuit 27 can be connected with infrared emission output stage 13, as the control input of infrared emission output stage 13.
Breaking-proof switch 26 described in the utility model can adopt relay or other switches, and it has a resilient contact 261, shown in Fig. 2,3,4.
As shown in Figure 5, being positioned on this active infrared transmitter house on the active infrared transmitter house has a thimble 60 with these resilient contact 261 corresponding positions, and when covering shell, thimble 60 props up this resilient contact 261 and makes it to press down, and delay control circuit 27 is not worked.
If the shell of artificial destruction active infrared transmitter is arranged, thimble 60 no longer props up the resilient contact 261 of the first tamper circuit, resilient contact 261 loses pressure and flicks, this state is no longer directly given alarm host machine by signal wire transmits, but triggers the control signal that delay control circuit 27 produces a lasting setting-up time.In first embodiment, this control signal can input to low-frequency pulse producer 11, makes it stop to produce pulsating wave, and when the setting-up time end, control signal disappears, and low-frequency pulse producer 11 recovers to produce pulsating waves.The time that sets is generally the several seconds.
Similarly, in a second embodiment, this control signal can input to carrier generator 12, it is suspended produce carrier signal, thereby the temporary transient no infrared carrier signal of transmitter is sent; In the 3rd embodiment, this control signal can input to infrared emission output stage 13, makes it temporarily stop to launch carrier signal, thereby the temporary transient no infrared carrier signal of transmitter is sent.
The active infrared receiver that is used with this active infrared transmitter receives the infrared beam that comprises modulation signal that the active infrared transmitter sends, in case having infrared beam, do not send by transmitter, the active infrared receiver can't receive modulation signal and send alerting signal, trigger corresponding warning port actuating of relay output trigger pip, send corresponding alert news by main control system.
As shown in Figure 5, active infrared transmitter of the present utility model is contained in the housing, only need to connect a pair of line of electric force during use and get final product work at power supply terminal 50 places, therefore the advantage of active infrared transmitter of the present utility model is to have saved additional signal lines, be applied in and improve system stability, reduction fault debugging cost and construction cost in the border guard system, shorten the engineering time.
It should be noted that, though embodiment of the present utility model shows three kinds of different connected modes of delay control circuit 17, but its purpose all is in order to make the active infrared transmitter temporarily stop to launch infrared carrier signal, those skilled in the art can also make amendment to embodiment of the present utility model and perfect according to this principle, but all drop in the scope of the present utility model.
Claims (5)
1. active infrared transmitter, comprise the low-frequency pulse producer, carrier generator, infrared emission output stage, infrared transmitting tube and the optical focusing system that are linked in sequence, it is characterized in that: also comprise breaking-proof switch and delay control circuit, described breaking-proof switch is connected described delay control circuit input end, described delay control circuit output terminal is connected with described low-frequency pulse producer input end, perhaps be connected with described carrier generator input end, perhaps the input end with described infrared emission output stage is connected.
2. active infrared transmitter as claimed in claim 1 is characterized in that, described breaking-proof switch has the resilient contact of the described delay control circuit work of a control.
3. active infrared transmitter as claimed in claim 1 or 2, it is characterized in that, be provided with a thimble with described resilient contact corresponding position on the described active infrared transmitter house, when described active infrared transmitter house covers, described thimble props up described resilient contact and makes it to press down, and described delay control circuit is not worked; When taking away described active infrared transmitter house, described thimble leaves described resilient contact, makes described delay control circuit work, sends a control signal that continues setting-up time.
4. active infrared transmitter as claimed in claim 3 is characterized in that described delay control circuit is an integrated circuit (IC) chip.
5. active infrared transmitter as claimed in claim 4 is characterized in that described delay control circuit is made of discrete component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520045234 CN2819340Y (en) | 2005-09-23 | 2005-09-23 | Active infrared transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520045234 CN2819340Y (en) | 2005-09-23 | 2005-09-23 | Active infrared transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2819340Y true CN2819340Y (en) | 2006-09-20 |
Family
ID=37005401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520045234 Expired - Fee Related CN2819340Y (en) | 2005-09-23 | 2005-09-23 | Active infrared transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2819340Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106157503A (en) * | 2015-04-03 | 2016-11-23 | 青岛海日安电子有限公司 | A kind of electronic grille fence |
-
2005
- 2005-09-23 CN CN 200520045234 patent/CN2819340Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106157503A (en) * | 2015-04-03 | 2016-11-23 | 青岛海日安电子有限公司 | A kind of electronic grille fence |
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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: 20060920 Termination date: 20130923 |