CN202167098U

CN202167098U - Remote antitheft alarm manufactured by using fixed telephone

Info

Publication number: CN202167098U
Application number: CN201120296599XU
Authority: CN
Inventors: 韩春龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-10
Filing date: 2011-08-10
Publication date: 2012-03-14
Anticipated expiration: 2021-08-10

Abstract

The utility model relates to a remote antitheft alarm manufactured by using a fixed telephone. The alarm consists of a broken line signal detection circuit, a handfree key trigger circuit, a monostable delay circuit, a redial key trigger circuit and a power supply. The remote antitheft alarm is characterized in that the handfree key trigger circuit and the redial key trigger circuit of the telephone use photoelectric couplers G1 and G2; and the type of a time base circuit IC (integrated circuit) used by the monostable delay circuit is NE555. The remote antitheft alarm utilizes the functions of handfree and redialing of the fixed telephone and directly utilizes terminals of the existing communication network to realize remote monitoring, thus solving the problems of complex technology and high price and the like universally in the remote alarm of the telephone on the market. The remote antitheft alarm not only can be used as a matched product of the telephone for independent development, but also can be used a new function of the telephone to be directly integrated in the telephone.

Description

Remote anti-theft alarm with the landline telephone making

Technical field

The utility model belongs to electronic technology field, relates to a kind of remote anti-theft alarm made from landline telephone.

Background technology

At present, the mode of the information transmission of remote monitoring mainly contains: the one, and the wire transmission that market share is maximum; The 2nd, carry out wireless transmission through wireless transmitting-receiving equipments; The 3rd, utilize the transmission of telephonic communication circuit.First kind wire transmission though the information transmission reliability is high, needs special wiring, and transmit leg suffers artificial destruction easily, and use cost is higher, and maneuverability is poor, scope of activities receives certain limitation; Second type is wireless transmission, though scope of activities obtains expanding, needs special twoway radio, and not only price operation and maintenance high, equipment is cumbersome for purchase of equipment, and receives electromagnetic interference (EMI) easily; The 3rd type is to utilize the existing fixed telephone line of popularizing, and does not need to connect up specially, does not take the radio frequency resource separately, has overcome preceding two types and has had various defectives such as monitoring range is restricted.

Utilize telephone network to implement remote monitor, bring great convenience will for daily life and work, when at home nobody the time; Door, the window that runs into dwelling house prized or important item when stolen; The information that takes place in the family lets immediately can sound far away from thousands of miles away master cellular phone immediately, and you just know, and emergency condition has taken place in the family, for preventing and reducing economic loss; Can seek help to friend, neighbours, property or the police rapidly, further to verify situation about taking place in the family.

Mentality of designing: general fixed telephone all has hands-free and redialing function; Use the Hands-free key of telephone set can accomplish normal talking; Utilize this existence conditions of fixed telephone, from the printed circuit board (PCB) of telephone set, Hands-free key and this 2 winding point of redial key are drawn respectively, can produce the trigger pulse in 2 time intervals through disconnection signal; Phototriode with in 2 photoelectrical couplers that buffer action arranged is connected on respectively on Hands-free key and the redial key; This remote anti-theft alarm is accomplished calling through the Hands-free key and the redial key of telephone set, when a situation arises, can be sounded immediately by the designated telephone of setting in advance.

The utility model content

Goal of the invention: the utility model utilizes existing telephone and cell phone network to implement remote monitoring, overcomes and remedied on the market all kinds of finished product long-distance monitorng devices or facility to exist working service trouble and price than problems such as height.When alert took place, the action of supervising device information feedback was clear-cut, agile; Monitor mode is versatile and flexible, and the size of guarded region or article character etc. are unrestricted; Realized that making and cost of development are low, the purpose of popularizing and promoting easily.

Beneficial effect: the described remote anti-theft alarm made from landline telephone of the utility model utilizes the hands-free and redialing function of fixed telephone; Directly utilize the terminal of existing communication network to realize remote monitoring, solved problems such as the ubiquitous technical sophistication of phone long-distance alarm apparatus, price height on the market.

This installs, and not only circuit structure is simple and direct, selects electronic devices and components commonly used, and circuit need not debugged basically, monitoring distance >=1000m, and dependable performance, and have low, suitable batch making of cost of manufacture and exploitation, be easy to popularize and promote.The utility model both can be used as the auxiliary products of telephone set and had developed separately, and a new function that also can be used as telephone set directly is integrated in the telephone set.

Technical scheme: the remote anti-theft alarm with landline telephone is made is made up of disconnection signal testing circuit, Hands-free key trigger circuit, monostable time delay circuit, redial key trigger circuit and direct supply; It is characterized in that: Hands-free key trigger circuit, redial key trigger circuit use photoelectrical coupler G1, the G2 of buffer action respectively, and the monostable time delay circuit uses the model of time base circuit IC to be NE555.

Components and parts annexation each other in other circuit

1. the disconnection signal testing circuit is made up of tongue tube JAG, silicon transistor BG1, resistance R 1 and resistance R 2; The base stage of silicon transistor BG1 connects the end of tongue tube JAG; The end of the other end connecting resistance R1 of tongue tube JAG, another termination dc power anode VCC of resistance R 1, the collector of silicon transistor BG1 connects an end of capacitor C 1 and an end of resistance R 2 respectively; Another termination dc power anode VCC of resistance R 2, the grounded emitter GND of silicon transistor BG1.

2. the Hands-free key trigger circuit are made up of silicon transistor BG2, capacitor C 1, photoelectrical coupler G1, LED 1; The base stage of silicon transistor BG2 connects an end of capacitor C 1; The collector of BG2 connects 2 pin of photoelectrical coupler G1 and an end of capacitor C 2 respectively; The negative pole of the 1 pin sending and receiving optical diode LED1 of photoelectrical coupler G1, the positive pole of LED 1 meets dc power anode VCC, answer the call respectively two contacts of Hands-free key in the machine of 4 pin of photoelectrical coupler G1,5 pin.

3. monostable time delay circuit (recurrent interval delay circuit) is made up of time base circuit IC, capacitor C 2, capacitor C 3 and resistance R 3; 2 pin of another termination time base circuit IC of capacitor C 2; Resistance R 3 one ends and 6 pin and 7 pin that meet time base circuit IC after capacitor C 3 one ends link to each other, another termination dc power anode VCC of resistance R 3, the other end ground connection GND of capacitor C 3; 4 pin and 8 pin of time base circuit IC meet dc power anode VCC, the 1 pin ground connection GND of time base circuit IC.

4. the redial key trigger circuit are made up of photoelectrical coupler G2, LED 2; 3 pin of time base circuit IC connect 2 pin of photoelectrical coupler G2; The negative pole of the 1 pin sending and receiving optical diode LED2 of photoelectrical coupler G2; The positive pole of LED 2 meets dc power anode VCC, 4 pin of photoelectrical coupler G2,5 pin two contacts on the replay key in the machine of answering the call respectively.

Circuit working principle: from fixed telephone, draw the contact of Hands-free key contact and redial key respectively, and be connected, see Figure of description 1 for details with 4 pin, 5 pin of two photoelectrical coupler G1, G2.When utilizing 1 pin, the 2 pin conductings of photoelectrical coupler G1, G2, the function that photosensitive triode 4 pin in the photoelectrical coupler, the resistance of 5 pin sharply diminish to replace respectively the conducting of Hands-free key and 2 contacts of redial key.

Circuit analysis: when device is connected DC power supply switch; Magnet makes tongue tube a, b two ends closure, silicon transistor BG1 conducting near the tongue tube JAG in circuit left side; Silicon transistor BG1 collector negative potential ends BG2 through C1; Supervising device gets into holding state, at this moment has little electric current passes through about 4mA except that BG1, and silicon transistor BG1 is in cut-off state.When a of tongue tube JAG, the moment that the b two ends are broken off, silicon transistor BG1 ends suddenly, and silicon transistor BG1 collector potential raises; Electrochemical capacitor C1 charges rapidly; Make silicon transistor BG2 short time conducting, 1 pin among the photoelectrical coupler G1,2 also conductings of human hair combing waste light diode, then the photosensitive triode among the photoelectrical coupler G1 becomes conducting by ending; Be equivalent to press the Hands-free key on the telephone set, by light emitting diode LED1 indicating operating status.Meanwhile 2 pin of time base circuit IC trigger through capacitor C 2 negative pulses; The 3 pin output high level of time base circuit IC makes 1 pin, 2 human hair combing waste light diode conductings among the photoelectrical coupler G2; Also conducting of photosensitive triode among the photoelectrical coupler G2; Be equivalent to press the replay key of telephone set, and by light emitting diode LED2 indicating operating status, at this moment telephone set is according to the automatic dial-out call signal of the telephone number that prestores in advance.

Description of drawings

Accompanying drawing 1 is that the utility model provides a remote anti-theft alarm circuit working schematic diagram made from landline telephone, and the circuit anode in the accompanying drawing 1 links to each other with dc power anode VCC, and the negative pole of direct supply links to each other with circuit ground GND.

Embodiment

Circuit working schematic diagram and description of drawings according to the remote anti-theft alarm made from landline telephone shown in the accompanying drawing 1; And according to the annexation between the components and parts in the described each several part circuit of utility model content, and the components and parts technical parameter described in the embodiment requires to implement to realize the utility model.

Components and parts are selected: element selects to consider emphatically that supervising device must adapt to the long-time uninterrupted requirement of using continuously, so make every effort to that element function is stable, circuit working reliably is principle.Components and parts select to screen as far as possible the wide and resistant to elevated temperatures components and parts of thermal adaptability.

Components and parts title and important technological parameters

Element number	The components and parts title	Major parameter	Quantity	Remarks
					IC	NE555, time base circuit	DIP dual inline type plastic packaging	1
BG1～BG2	2SC9013 silicon triode	T0-92 plastic packaging, β >;=200	2	Or use 3DG6
					LED1、LED2	Red light emitting diodes	LEDΦ5	2
G1、G2	Photoelectrical coupler (triode type)	4N25 or 4N26 (5 pin)	2	Dual-in-line
					R1	Resistance	1/8W?2KΩ	1
R2	Resistance	1/8W?1KΩ	1
					R3	Resistance ※	1/8W?24～36KΩ	1	About 2 seconds
C1、C2、C3	Electrochemical capacitor	47μF/16V	3	Vertical
					JAG	Tongue tube	Φ3	1	Or microswitch
Connector	The plug-in unit of Du Pont's specification	Stitch spacing 2.54mm	3 covers
					DC	Electric battery or power supply adaptor	Output voltage: 6～7.5V	1 group

Circuit debugging

After the pulse by the broken string generation, circuit thereafter produces the trigger pip in 2 time intervals automatically.A, 2 of b both can insert tongue tube in circuit, made tongue tube produce pulse signal through magnet mobile, also can be in circuit a, 2 of b connect thin wire and will protect the thing replacement tongue tube that fences up.The resistance of lead of deploying troops on garrison duty can reach 5K Ω, is fit to the monitoring place or article carry out at a distance, wiring is on a large scale set up defences.

1. when circuit debugging, monitoring " probe " can replace tongue tube carry out simulation test with regular tap earlier, treats that using tongue tube again instead after the test normally does further checking.The magnet putting position on tongue tube next door can be placed according to monitored object and actual needs;

2. the resistance of resistance R 3 can be regulated time interval of 2 pulses in the circuit, and the resistance of resistance R 3 is big more, and interval time is just long more, and the resistance of resistance R 3 is that 30K Ω delay time was approximately for 2 seconds;

3. 2 photoelectrical couplers in the circuit should be debugged respectively.Can ohmmeter be attempted by 4 pin, 5 pin of photoelectrical coupler during debugging respectively; When supervising device energising work; Observe phototriode in the photoelectrical coupler receive behind the light the conducting situation, luminotron 1 pin in the photoelectrical coupler, the about 5～7.5mA of 2 pin working currents;

4. direct supply can be respectively with 5～8V different operating voltages, and the test burglar alarm is to the adaptability and the stability of different voltages, and the complete machine working current is normally at 18～25mA;

5. when preventing that supervising device detecting situation and telephone set from beginning to dial automatically, may alarm the uninvited guest, should be in advance with P cock of serial connection in the built-in loudspeaker loop of telephone set, the sound that sends when dialling with convenient cut-out loudspeaker;

6. should built-in standby power supply in the burglar alarm, avoid supervising device to meet unexpected have a power failure or the people is that the outage of operating a switch brings unnecessary influence and loss by chance.

Method of application

1. in order to guarantee monitoring effect, suggestion uses a telephone line for well separately.If condition does not possess, wherein one one of several preferably clear and definite doubling telephone set are carried out telephone set as the action of supervising device.

2. at first supervising device has patched telephone set, through the simulated operation of alert, and whether can normal call the prestore phone of number of the hands-free and redialing function of observing telephone set.

3. according to the character of fence coverage or protection object, confirm to use tongue tube or microswitch still be magnetic switch as monitoring " probe ", and attention " probe " is arranged on more hidden place.Notice that owner or managerial personnel get into setting up defences during the zone of supervising device, supervising device also can carry out dialing alarm.

4. at the suitable position of zone or valuables of setting up defences, (hidden) good monitoring " probe " is installed, has laid cable, open the power switch of supervising device at last.When a plurality of needs monitoring place or article are arranged, can in the loop of monitoring " probe ", be connected in series a plurality of " probes ".

5. in order to prevent that telephone set from startling the uninvited guest when dialling automatically, should close the switch of the loudspeaker of telephone set conveniently after the replay number storage.

Claims

1. remote anti-theft alarm made from landline telephone; Form by disconnection signal testing circuit, Hands-free key trigger circuit, monostable time delay circuit, redial key trigger circuit and power supply; It is characterized in that: phone Hands-free key trigger circuit, redial key trigger circuit use photoelectrical coupler G1, G2, and the monostable time delay circuit uses the model of time base circuit IC to be NE555.

2. the remote anti-theft alarm made from landline telephone according to claim 1; It is characterized in that: the disconnection signal testing circuit is made up of tongue tube JAG, silicon transistor BG1, resistance R 1 and resistance R 2; The base stage of silicon transistor BG1 connects the end of tongue tube JAG; The end of the other end connecting resistance R1 of tongue tube JAG, another termination dc power anode VCC of resistance R 1, the collector of silicon transistor BG1 connects an end of capacitor C 1 and an end of resistance R 2 respectively; Another termination dc power anode VCC of resistance R 2, the grounded emitter GND of silicon transistor BG1.

3. the remote anti-theft alarm made from landline telephone according to claim 1; It is characterized in that: the Hands-free key trigger circuit are made up of silicon transistor BG2, capacitor C 1, photoelectrical coupler G1, LED 1; The base stage of silicon transistor BG2 connects an end of capacitor C 1; The collector of BG2 connects 2 pin of photoelectrical coupler G1 and an end of capacitor C 2 respectively; The negative pole of the 1 pin sending and receiving optical diode LED1 of photoelectrical coupler G1, the positive pole of LED 1 meets dc power anode VCC, answer the call respectively two contacts of Hands-free key in the machine of 4 pin of photoelectrical coupler G1,5 pin.

4. the remote anti-theft alarm made from landline telephone according to claim 1; It is characterized in that: the monostable time delay circuit is made up of time base circuit IC, capacitor C 2, capacitor C 3 and resistance R 3; 2 pin of another termination time base circuit IC of capacitor C 2; Resistance R 3 one ends and 6 and 7 pin that meet time base circuit IC after capacitor C 3 one ends link to each other, another termination dc power anode VCC of resistance R 3, the other end ground connection GND of capacitor C 3; 4 and 8 pin of time base circuit IC meet dc power anode VCC, the 1 pin ground connection GND of time base circuit IC.

5. the remote anti-theft alarm made from landline telephone according to claim 1; It is characterized in that: the redial key trigger circuit are made up of photoelectrical coupler G2, LED 2; 3 pin of time base circuit IC connect 2 pin of photoelectrical coupler G2; The negative pole of the 1 pin sending and receiving optical diode LED2 of photoelectrical coupler G2, the positive pole of LED 2 meets dc power anode VCC, 4 pin of photoelectrical coupler G2,5 pin two contacts on the replay key in the machine of answering the call respectively.