GB2200016A - Electronic door lock with auto-dialling telephone alarm - Google Patents

Abstract

A door, if opened without correct key-pad code operation of an electronic lock or if the wrong code is used or the lock circuit is damaged, causes an auto-dialler to call a number from a list of numbers in order of priority and to proceed through the list until at least two responses have been registered and a recorded message delivered. The control circuit which is secured within a locked casing enables the lock release code to be registered by means of a key-pad which is also used to key in the list of telephone numbers for the auto-dialler. A speech synthesiser is used to record the alarm message. A local alarm is also sounded.

Description

A FULLY AUTOMATIC MICROCOMPUTER CONTROLLED TELEPHONE REPORTING AND BURGLAR-PROOF DEVICE This invention relates to Telephone reporting and burglarproof, particularly a Burglar-Proof Device.

Change of society structure makes many homes unoccupied in the daytime, and necessity to secure personal and property security in the nighttime is increasing. Therefore, the normal lock with only locking function is not longer able to satisfy the need. Most families and places have not employed security guard companies yet because of cost factor and some scandals in the field of security guard companies. Therefore, there has been an anxious need for lock having automatic monitoring and reporting function at general acceptable cost. However, locks available in the market nowaday, such as mechanical cylindrical lock, three-step lock, electromagnetic lock and even electronic lock are merely for locking purpose, and none of them has monitoring and reporting function.

The present invention provides an automatic reporting and burglar-proof lock, particularly a fully automatic microcomputer controlled telephone reporting and burglar-proof device featured by an electronic lock which can be unlocked by an unlocking code given via a keyboard if the code so given is found correct, otherwise, or if door with it is broken violently, or connecting line to the lock is broken, it can trigger an alarm and dial telephone numbers in preset order till at least two telephone lines are got through and a sound synthesizer can play back messages prerecorded so that the called parties can treat the circumstance timely.

An embodiment of this invention is described by way of example, with reference to the drawings in which : Fig. 1 illustrates a preferred embodiment according to the present invention.

Fig. 2 is a circuit diagram of the embodiment according to the present invention.

Fig. 3 is another circuit diagram of the embodiment according to the present invention.

Attachment : A flowchart for software of the present invention.

The main objective of the present invention is to provide a fully automatic microcomputer controlled telephone reporting and burglar-proof device which can enter fully automatic alerting condition as soon as door is properly closed, and to give an alarm whenever any invasion-is attempted.

Another objective of the present invention is tp provide a fully automatic microcomputer controlled telephone reporting and burglar-proof device which is connecting to a telephone line on which a plurality of telephone numbers can be preset via keyboard directly so that at least two telephone numbers will be dealt and got through to give reporting in the order of priority of telephone numbers preset whenever the alarm is triggered.

The present invention is described in detail below with reference to a preferred embodiment.

Please refer to Fig. 1 which illustrates an embodiment of the present invention, there are three main components for the present invention: A keyboard (1) to be installed outdoors; an electronic lock (2) to be installed on a door; and a controller (3) to be installed at appropriate location indoors. The keyboard (1) is connecting to the electronic lock (2) via a connecting line (4), and the electronic lock (2) is connecting to the controller (3) via another connecting line (5) for transmission of signal among them.

The keyboard (1) is composed of 10 numeral keys from O to 9 on a panel (6). There are two indicators - Input Indicator (7) and Standby Indicator (8), and an illuminator (9) on the upper part of the panel (6) too. The illuminator (9) is for illumination when operating at night. It can be turned on by pushing of any key on the keyboard (1), and turned off in five seconds after pushing the last key. Below the panel (6) there is a keyhole (10) for unlocking by means of key when code preset is forgot, but unlocking in this manner will trigger the alarm. The electronic lock (2) has a unlocking button (11) which applies the conventional unlocking mechanism to permit unlocking from indoors by mechanical means in case unlocking circuit malfunctions due to any cause. The controller (3) uses a key (12) for opening it to preset unlocking code and telephone numbers.An alarm (13) is connected to the controller from an appropriate location, and there is a power supply (14) to supply power to the controller (3).

Please refer to Figs. 2 and 3 for circuit diagrams of the present invention. The microcomputer (15) is a signal chip microcomputer, unlocking code and telephone numbers are preset via the keyboard (16), or telephone numbers can be processed by a driver (17) and displayed on a display board (18). The numberal keyboard (1) can be encoded by an encoder (19) and transmit the code to the microcomputer (its). The microcomputer (15) can generate signal output to drive a generator (21) in a dialing circuit (20) to give a dialing signal.

A selector switch (22) is used to select multi-frequency, 10 pps pulse or 20 pps pulse dialing, and a transformer (23) is used to detect ring back tone and to broadcast verbal signal after telephone line has got through. Ring back tone is amplified by an amplifier (25) in a tone decoder circuit (24), output of which from a tone decoder (26)'and a monostable oscillator-(27) is discriminated by the microcomputer (27) to judge whether the line has got through or not. When there is an input from the keyboard (16), a buzzer (26) gives a signal to ascertain the input. The present invention uses a sound synthesizer to record address, circumstance, and other messages through a microphone.(33) after pushing a start key (32) and turning a record/play selection switch (31) to record position.

The sound synthesizer (30) will then store the messages in a memory (34). When therecord/play selection switch (31) is at play position, pushing of the start key (32) will play back the messages in memory, which can be amplified by an amplifier (37), and sent on the telephone line via a terminal (1) of the transformer (23) and a rectifier circuit (38). Whenever the door is opened without the preset code, a detector (39) will give a signal to the microcomputer (its), the microcomputer (15) will then drive a transistor (40) to trigger an alarm (13), and a relay (42) to simulate a hook switch of telephone, and drive the dialing circuit (20) to dial a telephone number.The tone decoder circuit (24) will judge whether the line is got through or not, and if not, the dialing circuit will dial another telephone number in preset order, till the line has got through. As soon as the line is through, there is a signal to the microcomputer (15) , and the microcomputer (15) will then give a signal to drive the sound synthesizer (30) to play back the messages, which are amplified by the amplifier (37) and coupled to the telephone line by the transformer (23). Whenever a correct code is given via the numeral keyboard (1), and it has been ascertained by the microcomputer (15) as true and correct, there is a signal to drive the circuit (43) to unlock the electronic lock (2), and the microcomputer will reject signal from the detector (39).If "LK" key on the keyboard (16) has been pushed, it means that the door has been locked inside, the microcomputer (15) will reject all signals given via the numeral keyboard (1), an inner locking indicator (45) is lighting, but the inner locking can be cleared by pushing the "LK" key again. An unlocking key (46) is used to open the electronic lock (2) from the controller (3) directly, and a test key (47) is designed to test dialing of telephone after presetting. A voltage regulator (48) is used to supply stable power to the circuits, and a battery is installed to provide emergency power via a diode (50) at power failure. On and off of power supply is controlled by a power switch (52).

A flowchart for software of the present invention is attached for reference.

In conclusion, the present invention provides a fully automatic microcomputer controlled telephone reporting and burglarproof system which uses a microcomputer to control unlocking of an electronic lock with changeable code and to dial telephone to report circumstance to police and/or others for security purpose.

It is indeed a perfect design of the art.

Claims (1)

1. CLAIm

   A fully automatic microcomputer controlled telephone reporting and burglar-proof device comprising: - a numeral keyboard with illuminator and standby indicator to be installed outdoors for giving of a preset unlocking code to unlock an electronic lock; - an electronic lock with detector to be installed on a door; - a controller with keyboard to preset telephone oumbers or unlocking code, control circuits and display board; wherein the controller is to store unlocking code and telephone numbers preset by user, compare input code and the preset code, and to unlock the electronic lock if the input code from the numeral keyboard is identical to---the-preset--code-f otherwise--or--when--ths- door is opened without correct unlocking code, the detector at the electronic lock can give a signal to the controller to trigger an alarm, and to dial the telephone numbers one by one in the order preset till at least two telephone lines are got through, and to drive a sound synthesizer to play back messages prerecorded therein so that the called parties can treat the circumstance timely.