CN1039917A - Microcomputer safety alarm device - Google Patents
Microcomputer safety alarm device Download PDFInfo
- Publication number
- CN1039917A CN1039917A CN 88104600 CN88104600A CN1039917A CN 1039917 A CN1039917 A CN 1039917A CN 88104600 CN88104600 CN 88104600 CN 88104600 A CN88104600 A CN 88104600A CN 1039917 A CN1039917 A CN 1039917A
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- Prior art keywords
- password
- given
- safety alarm
- police
- input
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- 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.)
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- Burglar Alarm Systems (AREA)
Abstract
A kind of novel microcomputer safety alarm device is formed Single Chip Microcomputer (SCM) system by single-chip microcomputer.Numerical key input cipher instruction and given password are carried out logic determines.As the then unlatching that conforms to, otherwise report to the police.Report to the police and block power switch assurance security alarm simultaneously.And can re-enter the proper password instruction.Time of fire alarming is adjustable.Given password has dual mode: a kind of employing toggle switch can arbitrarily be changed by the user; A kind of curing in program storage.This device can be used for the safety alarm of safety cabinet, case, door, vehicle, boats and ships, valuable instrument and equipment.
Description
The present invention relates to a kind of novel microcomputer safety alarm device.
Existing safety theftproof device as spring lock, combination lock, is easily opened by others, causes the stolen or damage of item to be protected or property.Though adjusting, combination lock opens number, complicated when the user adjusts.So existing safety theftproof device is undesirable.
The invention provides a kind of novel microcomputer safety alarm device.Can be used for safety cabinet, case, door, vehicle, boats and ships, safe, antitheft, the warning of important instrument and equipment.It is characterized in that carrying out logic determines by micro computer by numerical key input cipher instruction.Be consistent with given password then as this input password and open.Otherwise, do not open and report to the police.Given password has two kinds of given ways:
1. can arbitrarily change by the user easily.
2. change by specialized equipment.
The invention will be further described below in conjunction with accompanying drawing:
Numerical key (1) is made up of 0～9 10 numeric keys, and the input password is formed (and can optionally increase and decrease figure place easily) by any four number sign indicating numbers.Given encryption apparatus (2) is a kind of can form (and can optionally increase and decrease) by two eight toggle switches, forms the sixteen bit binary code, decimal code of per four correspondences.Toggle switch both can arbitrarily have been adjusted four given passwords of (can the optionally increase and decrease) decimal system like this.Another kind then is that four given passwords of (can the optionally increase and decrease) decimal system are solidificated in the EPROM memory under program (3).Change as needs, then need former content of solidifying in EPROM to be wiped, after the content of corresponding given password unit in the program is rewritten, this program is solidificated among the EPROM (3) again with the EPROM eraser.So just can save toggle switch (2) and input/output port extender (4).
Single-chip microcomputer (5) at first reads in four given passwords of (can the optionally increase and decrease) decimal system (solidify then do not need this step in EPROM as given password) by input/output port extender (4) from toggle switch, to compare by turn by the password and the given password of keyboard input then, after all relatively intacter, all be consistent with given password as password, then send open command by the keyboard input.Through rp-drive (7), photoisolator (8) makes relay J 1 energising, drives opening device, finishes breakdown action.As long as have by the password of keyboard input and given password one inconsistent, then single-chip microcomputer (5) sends instruction, and through rp-drive (7), photoelectricity is isolated (9), make relay J 2 energising drive warning devices, and the normally opened contact of using J2 simultaneously is with the power switch short circuit.After feasible like this warning, dump can not have been guaranteed security alarm even turn off power switch.
When taking place to report to the police, permission by numeric keypad (1) input cipher instruction, is consistent with given password as the input password again, then remove and report to the police, and cut-out is sent open command simultaneously to the blockade of power switch.
For avoiding continual warning, be provided with 3 minutes time of fire alarming, report to the police and automatically terminate warning after 3 minutes, cut off blockade simultaneously to power switch.
(3) be single-chip microcomputer external program memory, (6) are address register, and power supply is direct current 6V.Opening device can be lock class, pin class, Switch etc.
This device reliability height, and cheap.
Claims (5)
1, a kind of microcomputer safety alarm device mainly comprises: single-chip microcomputer [5], 10 numeric keys [1], EPROM memory under program [3], rp-drive [7], address register [6], photoelectricity is isolated [8], [9], relay J 1, J2.It is characterized in that the password of keyboard input is compared by turn by single-chip microcomputer and password given in advance, all relatively intacter after, as all equating, then start opening device, if any one unequal, then start warning device, the while opening device is failure to actuate.
2, according to claim 1 described microcomputer safety alarm device, it is characterized in that: password given in advance can pass through input/output port extender (4), given by toggle switch (2), also curable in EPROM memory under program (3), at this moment can save input/output port extender (4) and toggle switch (2).
3, according to claim 1 described microcomputer safety alarm device, it is characterized in that: given password is made up of the numerical digit decimal system number, and can optionally increase and decrease figure place.
4, according to claim 1 described microcomputer safety alarm device, it is characterized in that: with the power switch short circuit, reporting to the police stops after 3 minutes reporting to the police when starting warning device, and removes the blockade to power switch.
5, according to claim 1 and 4 described microcomputer safety alarm devices, it is characterized in that the back permission taking place to report to the police again by numeric keypad input cipher instruction, as input password and be consistent with given password, then excision is reported to the police automatically, and cut-out is sent open command simultaneously to the blockade of power switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88104600 CN1039917A (en) | 1988-07-22 | 1988-07-22 | Microcomputer safety alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88104600 CN1039917A (en) | 1988-07-22 | 1988-07-22 | Microcomputer safety alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1039917A true CN1039917A (en) | 1990-02-21 |
Family
ID=4833064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88104600 Pending CN1039917A (en) | 1988-07-22 | 1988-07-22 | Microcomputer safety alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039917A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308600B (en) * | 2007-05-14 | 2012-07-18 | 凯莫集团股份公司 | Radio control for electrical devices |
-
1988
- 1988-07-22 CN CN 88104600 patent/CN1039917A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308600B (en) * | 2007-05-14 | 2012-07-18 | 凯莫集团股份公司 | Radio control for electrical devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |