CN105575025A - Wireless alarm system for office building or dwelling house - Google Patents
Wireless alarm system for office building or dwelling house Download PDFInfo
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- CN105575025A CN105575025A CN201410544406.6A CN201410544406A CN105575025A CN 105575025 A CN105575025 A CN 105575025A CN 201410544406 A CN201410544406 A CN 201410544406A CN 105575025 A CN105575025 A CN 105575025A
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- office building
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- wireless alarm
- signal processing
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- 238000000034 method Methods 0.000 description 2
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- PBGKNXWGYQPUJK-UHFFFAOYSA-N 4-chloro-2-nitroaniline Chemical compound NC1=CC=C(Cl)C=C1[N+]([O-])=O PBGKNXWGYQPUJK-UHFFFAOYSA-N 0.000 description 1
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- Alarm Systems (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The invention provides a wireless alarm system for an office building or a dwelling house. The system comprises a single-chip microcomputer, an alarm circuit, a GSM communication module, an encryption and decryption apparatus, and a signal processing circuit, wherein the alarm circuit, the GSM communication module, the encryption and decryption apparatus, and the signal processing circuit are connected with the single-chip microcomputer. The signal processing circuit includes an infrared receiving unit. In addition, the system also includes at least one infrared probe. According to the wireless alarm system, when an alarming situation occurs in a residential defence area, the system can carry out acousto-optic electric alarming automatically, thereby producing powerful deterrence for the intruder. With the GSM module, the owner of the house can be informed of the alarming situation remotely, so that the owner can take effective emergency measures timely and immediately and thus the anti-theft effect is good. Besides, the encryption and decryption measure is added and thus switching between defence organization and defence withdrawing of the system can be realized, so that the function of the on-demand service for the house owner can be realized.
Description
Technical field
The present invention relates to electronic circuit field, particularly, relate to a kind of office building house wireless alarm system.
Background technology
Along with the development of economy, the living standard of people is significantly improved; Especially the raising of living standard, the problem of secure context more and more causes the attention of people.In order to ensure oneself property safety, antitheft door and guard rail etc. have all been installed on the door of oneself basement and house, window by many building resident families.But these equipment while antitheft, also bring many drawbacks: as, if antitheft door key loss, very large trouble can be brought to householder; Run into emergency condition in family, these burglary-resisting installations bring inconvenience also can to escape and fire-fighting and rescue.
Summary of the invention
For overcoming the deficiency of existing house burglary-resisting installation, the invention discloses a kind of office building house wireless alarm system.
Office building house wireless alarm system of the present invention, comprise single-chip microcomputer, the warning circuit be connected with single-chip microcomputer, gsm communication module, encrypting and decrypting device and signal processing circuit, described signal processing circuit comprises infrared receiving device, and described office building house wireless alarm system also comprises at least one infrared probe.
Preferably, also comprise electric power management circuit, described electric power management circuit is encrypting and decrypting device, single-chip microcomputer and gsm communication module for power supply.
Preferably, described single-chip microcomputer is AT89C52.
Preferably, described gsm communication module is TC35.
Preferably, described infrared probe is pyroelectric infrared sensor.
Office building house wireless alarm system of the present invention, when there is alert in house defence area, system can automatic acousto-optic electric alarm to give intruder more powerful deterrence; And realize long-rangely informing householder's alert by gsm module, make it to take effective emergency measure immediately, make anti-theft effect better; Add the measure of encrypting and decrypting in addition, to realize the switching of System Deploying and disarming state, really achieve the function into householder's on-demand service.This system also extends to bed rearrangement building, and even whole residence district, therefore has wide usage space and development space.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the present invention's do, but embodiments of the present invention are not limited thereto.
Office building house wireless alarm system of the present invention, comprise single-chip microcomputer, the warning circuit be connected with single-chip microcomputer, gsm communication module, encrypting and decrypting device and signal processing circuit, described signal processing circuit comprises infrared receiving device, and described office building house wireless alarm system also comprises at least one infrared probe.
System utilizes pyroelectric infrared sensor to defence area real time monitoring, and single-chip microcomputer is the core control part of whole system, and the switch alarm signal of sensor-triggered is input to single-chip microcomputer after signal processing circuit; Single-chip microcomputer is judged signal, then gives an order, and makes system carry out work in a certain order by topworks.Here comprise: when intelligent detector unusual circumstance, adopt acoustic scene, optical, electrical warning on the one hand, to deter offender, on the other hand, introduce advanced GSM mechanics of communication, utilize gsm wireless communication network, the situation in family is passed to householder, and householder is after obtaining information, effective emergency measure can be taked immediately, as, phone local property, 110 emergency centers etc., emergency treatment is carried out to accident; In addition, native system is deployed troops on garrison duty and disarming state to switch by encryption and decryption.System architecture as shown in Figure 1.
In electronic anti-theft field, pyroelectric infrared sensor is because of its good concealment, and power consumption is little, and cheap, technical feature is stablized, and is subject to the welcome of users.Its principle of work: body temperature, generally at 37 degree, can send the infrared ray of wavelength about about 10 μMs, the infrared probe of sensor carries out work by the infrared ray detecting human-body emitting.Its induction source adopts pyroelectricity element usually, can lose charge balance, and then outwards discharge electric charge when receiving human infrared radiation temperature and changing, follow-up through a series of signal treatment circuit, just can produce alerting signal.In order to only to the sensitive for infrared radiation of human body, show up in the radiation of this sensor and be usually coated with special Fresnel optical filter, to strengthen gathering infrared ray, play the effect of effectively restriction environmental interference.
That the design adopts is the new generation of wireless communication gsm module TC35 that Siemens Company releases, the operating voltage of this module is 3.3 ~ 5.5V, 900MHZ/1800MHZ two frequency ranges can be operated in, carry RS232 communication interface, machine communication can be connected with PC, single-chip microcomputer easily, safely, reliably realize data, voice transfer, Short Message Service and fax in system schema.Wherein, due to short message have realize simple, communications cost is low, good confidentiality, directly user oriented mobile phone and not by features such as region restrictions, be utilize communication modes the most widely at present.In this warning system, using user mobile phone as receiving terminal, when having alert to occur in manager, mobile phone can receive an alarming short message from intelligent alarm system automatically, so just can realize remote alarms in real time, reliably, efficiently.
When just heat outputting electric signal after the infrared ray that Sensor monitoring sends to human body, because this signal is very faint and be mingled with undesired signal, therefore devise special signal processing circuit and (adopt operational amplifier, peripheral circuit is coordinated to form the amplifying circuit with bandpass filter function) isolate pyroelectric signal, and amplified thousands of times; By the optimal design of parameter, cooperation comparator circuit eliminates the interference that flowing hot-air causes further.Then after amplifying two-stage, isolated pyroelectric signal carries out analysis judgement.For false action-proof, signal will compare with threshold level, produce high level signal and export.The signal finally produced by difference probe is incorporated into the INT1 mouth of single-chip microcomputer by rejection gate, to be interrupted to perform corresponding action; When not interrupting, system is in holding state, can reduce system power dissipation like this.
When single-chip microcomputer monitor someone enter in defence area time, intelligent alarm system just carries out audible alarm by hummer, and the diode that simultaneously glows glimmers, play deterrence offender effect.High pressure generator is have also been introduced in the design, after the relay normally open contact connected is closed, secondary output high pressure can be made through boosting, caused alarm unit outer cover, if criminal is intended to destroy warning device, when touching its shell, even if with gloves, high pressure also can puncture gloves by human body discharge, and this will effectively stop the further crime of offender, but also can not cause permanent injury to it.
The communication of single-chip microcomputer and TC35, general employing work in series mode 1, data layout is 10.Wherein, 1 start bit (0), 8 data bit (lowest order is front), 1 position of rest (1).The value of its baud rate depends on the value of the SMOD position in the flood rate of timer T1 and special function register PCON.TXD and RXD level due to single-chip microcomputer is Transistor-Transistor Logic level, and through RS-232 interface when TC35 carries out communication, Transistor-Transistor Logic level and RS-232 level incompatible, so during both interfaces, level conversion must be carried out, use MAX232 chip at this.
By the method to system encryption, deciphering, carry out deploying troops on garrison duty and the switching of disarming state.In system initialization process, in single-chip microcomputer, be provided with specific password.When head of a family goes back home, by correctly inputting this password to withdraw a garrison.Now, in indoor, free activity can not produce warning.When going out, operable key dish makes system reenter armed state.It is to be noted that under the state of deploying troops on garrison duty, after alerting signal being detected, whether system after one section of time delay, need be verified this signal and exists again, if exist, and does not withdraw a garrison, then produces corresponding alarm (acousto-optic-electric effect and short message inform householder).This time delay is very necessary, and the defence area left from establishing due to owner needs a period of time, if do not have this time delay, so owner oneself is through defence area, also can produce false alarm.
As mentioned above, the present invention can be realized preferably.
Claims (5)
1. office building house wireless alarm system, it is characterized in that, comprise single-chip microcomputer, the warning circuit be connected with single-chip microcomputer, gsm communication module, encrypting and decrypting device and signal processing circuit, described signal processing circuit comprises infrared receiving device, and described office building house wireless alarm system also comprises at least one infrared probe.
2. office building house wireless alarm system according to claim 1, is characterized in that, also comprise electric power management circuit, and described electric power management circuit is encrypting and decrypting device, single-chip microcomputer and gsm communication module for power supply.
3. office building house wireless alarm system according to claim 1, is characterized in that, described single-chip microcomputer is AT89C52.
4. office building house wireless alarm system according to claim 1, is characterized in that, described gsm communication module is TC35.
5. office building house wireless alarm system according to claim 1, is characterized in that, described infrared probe is pyroelectric infrared sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410544406.6A CN105575025A (en) | 2014-10-15 | 2014-10-15 | Wireless alarm system for office building or dwelling house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410544406.6A CN105575025A (en) | 2014-10-15 | 2014-10-15 | Wireless alarm system for office building or dwelling house |
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| Publication Number | Publication Date |
|---|---|
| CN105575025A true CN105575025A (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410544406.6A Pending CN105575025A (en) | 2014-10-15 | 2014-10-15 | Wireless alarm system for office building or dwelling house |
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|---|---|
| CN (1) | CN105575025A (en) |
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2014
- 2014-10-15 CN CN201410544406.6A patent/CN105575025A/en active Pending
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Application publication date: 20160511 |