CN203165131U - Novel bank safety alarm with infrared monitoring and silicon-controlled-rectifier output control - Google Patents
Novel bank safety alarm with infrared monitoring and silicon-controlled-rectifier output control Download PDFInfo
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- CN203165131U CN203165131U CN 201320124741 CN201320124741U CN203165131U CN 203165131 U CN203165131 U CN 203165131U CN 201320124741 CN201320124741 CN 201320124741 CN 201320124741 U CN201320124741 U CN 201320124741U CN 203165131 U CN203165131 U CN 203165131U
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Abstract
The utility model discloses a novel bank safety alarm with infrared monitoring and silicon-controlled-rectifier output control, which comprises a human-body infrared sensor, a single-chip microcomputer, an alarm load, six capacitors, two resistors and a silicon controlled rectifier. Three output ends of the human-body infrared sensor correspond with three sensing signal input ends of the single-chip microcomputer, the six capacitors and the two resistors form a low-pass filter circuit, the three output ends of the human-body infrared sensor are connected with the low-pass filter circuit and then correspondingly connected with the three sensing signal input ends of the single-chip microcomputer, a control signal output end of the single-chip microcomputer is connected with a control end of the silicon controlled rectifier, and the silicon controlled rectifier is connected with the alarm load in series and then connected with an ac power supply. The low-pass filter circuit is added to strengthen filtering effect for high-frequency noise waves and improve signal to noise ratio, and is especially suitable for occasions on which shielding wires are employed to back feed the sensing signals; and the silicon controlled rectifier is used to control the alarm load, is low in system electricity consumption and high in output power, and is suitable for occasions needless of isolating a bank safety system from commercial power.
Description
Technical field
The utility model relates to a kind of bank safety alarm, relates in particular to the bank safety alarm of a kind of new infrared monitoring SCR control output.
Background technology
The bank safety alarm is mainly used in the secret room in the bank, as national treasury etc., be used for sensed human body near the time trigger warning device, send alerting signal, to avoid the generation of stolen case.There is the problem that signal to noise ratio (S/N ratio) is lower, detection sensitivity is not enough in existing bank safety alarm, and the circuit structure more complicated.
The utility model content
The purpose of this utility model just is to provide in order to address the above problem the bank safety alarm of a kind of high s/n ratio and highly sensitive new infrared monitoring SCR control output.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The bank safety alarm of new infrared monitoring SCR control described in the utility model output comprises the human-body infrared sensing device, single-chip microcomputer and warning load, three output terminals of described human-body infrared sensing device are corresponding with three transducing signal input ends of described single-chip microcomputer, described bank safety alarm also comprises six electric capacity, two resistance and a controllable silicon, first output terminal of described human-body infrared sensing device respectively with first end of first electric capacity, first end of first resistance is connected with first end of the 3rd electric capacity, second output terminal of described human-body infrared sensing device respectively with second end of described first electric capacity, first end of second electric capacity, first end of the 4th electric capacity, first end of the 5th electric capacity, the second transducing signal input end of first end of the 6th electric capacity and described single-chip microcomputer is connected, the 3rd output terminal of described human-body infrared sensing device respectively with second end of described second electric capacity, second end of described the 3rd electric capacity is connected with first end of second resistance, second end of described second resistance is connected with second end of described the 4th electric capacity and the 3rd transducing signal input end of described single-chip microcomputer respectively, second end of described first resistance is second end of described the 5th electric capacity respectively, the first transducing signal input end of second end of described the 6th electric capacity and described single-chip microcomputer is connected, the control signal output terminal of described single-chip microcomputer is connected with described silicon controlled control end, and described controllable silicon is connected with AC power with described warning load series connection back.
Six electric capacity and two resistance are common forms a low-pass filter circuit, and three output terminals of human-body infrared sensing device connect behind this low-pass filter circuit the corresponding connection of three transducing signal input ends with single-chip microcomputer, has strengthened the make an uproar filtration result of ripple of high frequency.
As preferably, described single-chip microcomputer is the TWH9512 single-chip microcomputer, and the first transducing signal input end of described single-chip microcomputer, the second transducing signal input end and the 3rd transducing signal input end are respectively D end, G end and the S end of described TWH9512 single-chip microcomputer; The control signal output terminal of described single-chip microcomputer is the VK end of described TWH9512 single-chip microcomputer.
The beneficial effects of the utility model are:
The utility model is by increasing low-pass filter circuit, strengthened the make an uproar filtration result of ripple of high frequency has been improved signal to noise ratio (S/N ratio), especially is suitable for the occasion that adopts shielding line to present transducing signal; Adopt SCR control warning load, system's power consumption is low, and output power is big, is applicable to that bank's security system need not the occasion with mains isolation.
Description of drawings
Fig. 1 is the circuit diagram of bank safety alarm described in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the bank safety alarm of new infrared monitoring SCR control described in the utility model output comprises human-body infrared sensing device PIR, the TWH9512 single-chip microcomputer, warning load RL, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, first resistance R 1, second resistance R 2 and controllable silicon GATE, three output terminal D of human-body infrared sensing device PIR, G, three transducing signal input end D of S and TWH9512 single-chip microcomputer, G, S is corresponding, the first output terminal D of human-body infrared sensing device PIR respectively with first end of first capacitor C 1, first end of first resistance R 1 is connected with first end of the 3rd capacitor C 3, the second output terminal G of human-body infrared sensing device PIR respectively with second end of first capacitor C 1, first end of second capacitor C 2, first end of the 4th capacitor C 4, first end of the 5th capacitor C 5, the second transducing signal input end G of first end of the 6th capacitor C 6 and TWH9512 single-chip microcomputer is connected, the 3rd output terminal S of human-body infrared sensing device PIR respectively with second end of second capacitor C 2, second end of the 3rd capacitor C 3 is connected with first end of second resistance R 2, second end of second resistance R 2 is connected with second end of the 4th capacitor C 4 and the 3rd transducing signal input end S of TWH9512 single-chip microcomputer respectively, second end of first resistance R 1 is second end of the 5th capacitor C 5 respectively, the first transducing signal input end D of second end of the 6th capacitor C 6 and TWH9512 single-chip microcomputer is connected, the control signal output terminal VK of TWH9512 single-chip microcomputer is connected with the control end of controllable silicon GATE, and controllable silicon GATE is connected with AC power AC with warning load RL series connection back.
As shown in Figure 1, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, first resistance R 1 and low-pass filter circuit of second resistance R, 2 common compositions, three output terminal D, G, the S of human-body infrared sensing device PIR connect behind this low-pass filter circuit three transducing signal input end D, the corresponding connection of G, S with the TWH9512 single-chip microcomputer, have strengthened the make an uproar filtration result of ripple of high frequency.Also show the conventional syndeton of other pin of TWH9512 single-chip microcomputer among Fig. 1, wherein, the two ends of the 3rd resistance R 3 are connected with two R ends of TWH9512 single-chip microcomputer, the two ends of the 4th resistance R 4 respectively with the D of TWH9512 single-chip microcomputer end, the RD end is connected with an end of the 5th resistance R 5, the other end of the 5th resistance R 5 respectively with the AC of TWH9512 single-chip microcomputer end, the end of controllable silicon GATE is connected with the end of AC power AC, the CR end of TWH9512 single-chip microcomputer is connected with an end of the 7th capacitor C 7 and an end of the 6th resistance R 6 respectively, the other end of the 7th capacitor C 7 is connected with the C end of TWH9512 single-chip microcomputer, the other end of the 6th resistance R 6 is connected with the other end of controllable silicon GATE and the end of warning load RL respectively, and the other end of warning load RL is connected with the other end of AC power AC.
The utility model is by increasing the low-pass filter circuit of being made up of jointly first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, first resistance R 1 and second resistance R 2, strengthened the make an uproar filtration result of ripple of high frequency, improve signal to noise ratio (S/N ratio) and sensitivity, especially be suitable for the occasion that adopts shielding line to present transducing signal; Adopt the break-make of controllable silicon GATE control warning load RL, system's power consumption is low, and output power is big, is applicable to that bank's security system need not the occasion with mains isolation.
Claims (2)
1. a new infrared is monitored the bank safety alarm that SCR control is exported, comprise the human-body infrared sensing device, single-chip microcomputer and warning load, three output terminals of described human-body infrared sensing device are corresponding with three transducing signal input ends of described single-chip microcomputer, it is characterized in that: also comprise six electric capacity, two resistance and a controllable silicon, first output terminal of described human-body infrared sensing device respectively with first end of first electric capacity, first end of first resistance is connected with first end of the 3rd electric capacity, second output terminal of described human-body infrared sensing device respectively with second end of described first electric capacity, first end of second electric capacity, first end of the 4th electric capacity, first end of the 5th electric capacity, the second transducing signal input end of first end of the 6th electric capacity and described single-chip microcomputer is connected, the 3rd output terminal of described human-body infrared sensing device respectively with second end of described second electric capacity, second end of described the 3rd electric capacity is connected with first end of second resistance, second end of described second resistance is connected with second end of described the 4th electric capacity and the 3rd transducing signal input end of described single-chip microcomputer respectively, second end of described first resistance is second end of described the 5th electric capacity respectively, the first transducing signal input end of second end of described the 6th electric capacity and described single-chip microcomputer is connected, the control signal output terminal of described single-chip microcomputer is connected with described silicon controlled control end, and described controllable silicon is connected with AC power with described warning load series connection back.
2. new infrared according to claim 1 is monitored the bank safety alarm of SCR control output, it is characterized in that: described single-chip microcomputer is the TWH9512 single-chip microcomputer, and the first transducing signal input end of described single-chip microcomputer, the second transducing signal input end and the 3rd transducing signal input end are respectively D end, G end and the S end of described TWH9512 single-chip microcomputer; The control signal output terminal of described single-chip microcomputer is the VK end of described TWH9512 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320124741 CN203165131U (en) | 2013-03-19 | 2013-03-19 | Novel bank safety alarm with infrared monitoring and silicon-controlled-rectifier output control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320124741 CN203165131U (en) | 2013-03-19 | 2013-03-19 | Novel bank safety alarm with infrared monitoring and silicon-controlled-rectifier output control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203165131U true CN203165131U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320124741 Expired - Fee Related CN203165131U (en) | 2013-03-19 | 2013-03-19 | Novel bank safety alarm with infrared monitoring and silicon-controlled-rectifier output control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203165131U (en) |
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2013
- 2013-03-19 CN CN 201320124741 patent/CN203165131U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140319 |