CN1107927C

CN1107927C - Infrared anti-theft network

Info

Publication number: CN1107927C
Application number: CN 99117200
Authority: CN
Inventors: 邱亮南; 沈彤
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-10
Filing date: 1999-11-10
Publication date: 2003-05-07
Anticipated expiration: 2019-11-10
Also published as: CN1252591A

Abstract

The present invention provides an infrared theft-prevention network which is composed of a CPU, infrared transmitters, infrared receivers, a driver, a buzzer, a vibration and execution device, a fixing device with a tubular hole, etc., wherein a plurality of pairs of the infrared transmitters and the infrared receivers are arranged in a relative mode that one corresponds to the other one; the encoding of rays of infrared pulses transmitted/received between the pairs, which is controlled by the CPU, is different. Once any ray (two identical coded rays of an interference resistance type) is blocked by an object, the CPU generates alarm signals in modes of the buzzer, the execution device, an electrical level output device, etc. The separation distance and the included angle of the network of the present invention can be regulated, the quantity of network lines can be increased and reduced optionally, and the total amount of networks can be regulated. The present invention has the characteristics of sensitive prevention, strong interference resistance ability, low price, etc. The infrared theft-prevention network can be widely used for the prevention of positions, such as windows, balconies, etc., of buildings.

Description

Infrared anti-theft net

Technical field

The present invention relates to the household anti-theft device, particularly a kind of infrared anti-theft net.

Background technology

The window of ordinary residence, balcony, door are the positions that the easiest people of suffering of buildings invades.Usually the guard technology that adopts has two big classifications at present.The one, the physical construction formula: the metal anti-theft net is directly perceived with its effect, and the low characteristics of holding concurrently of price obtain popularizing rapidly since the eighties at home.But, cause the non-constant of its actual defence effect, and give the sense organ of iron cage in appearance owing to be subject to the destruction of instruments such as iron branch pincers, lifting jack.On mounting means, there is the solder joint easy-to-rust, potential tenesmus hidden danger; Enclosed construction has a strong impact on shortcomings such as security against fire, progressively begins to be eliminated in the big city to pull down.The 2nd, the electric induction type alarm; Door magnetic-type inductor is door, the most reliable anti-intrusion detection device of window, and price is lower, and the basis of popularization and application is arranged.But owing to can only play anti-invasion effect under door, window closed condition, practicality is subjected to great restriction, and building, the especially private residence strick precaution at night in summer for southern area is difficult to bring into play its effect especially.Another kind of Passive Infrared Detector has special model listing at door, window, but targets such as opposite house, window are taken precautions against.But there is the defective of (Yishanmen window will 200-300 unit) on the high side, is difficult to popularize.In addition, although developed two mirror even many mirror technology now, but be difficult to avoid fully false alarm to take place, this deadly defect has fundamentally restricted the practical value of this series products.Other has a kind of active infrared line detector of correlation that kinds such as Dan Shu, two-beam, four bundles are arranged.Though this series products has the service-strong advantage, and price is not really high and since the defence area narrow, so can't cover the door, window can not be used for the door, window antitheft; Add that its principle of work is respectively to restraint infrared ray to be same frequency, the characteristics of same coding are so require just to produce alerting signal when infrared receiver all is blocked.This characteristic has fundamentally been got rid of and has been used for the possibility that door and window is taken precautions against.

Summary of the invention

The objective of the invention is advantage at correlation active infrared line detector reliable operation, low to its resolving power, the weakness of defence faciostenosis, a kind of resolving power that can improve correlation active infrared line detector is proposed, reach the purpose that increase infrared transmitter/infrared ray receives logarithm simultaneously, it is adjustable to make it can constitute many stripe pitch, and the netting twine angle is variable, and the netting twine device can rubato infrared anti-theft net.

The objective of the invention is to be achieved by the following scheme, by CPU, infrared transmitter, infrared receiver, analog line driver, voltage driver, band [stationary installation; Wire casing; Formations such as hummer, actuator, crystal oscillator, power supply and connecting line, said infrared transmitter and infrared receiver are arranged in the wire casing by the stationary installation of being with [in the relative mode of 1-1, this wire casing portals corresponding the having in [exit position simultaneously, makes the relative infrared transmitter of 1-1/infrared receiver constitute the two ends of netting twine; The quantity of netting twine equates with the quantity of infrared transmitter/infrared remote receiver, the density of netting twine and angle are to realize by the position of stationary installation in wire casing of adjusting the band [, the length of netting twine is to change by the relative distance of adjusting the two ends wire casing, by the I/O mouth of CPU control infrared transmitter and infrared receiver, the coded system of the pulse ray between the every pair of infrared transmitter/infrared receiver is different fully.

Above-mentioned infrared transmitter/infrared ray is received device both can be by a CPU control, also can control infrared transmitter with a CPU, with another CPU infrared receiver, when adopting two CPU control modes, must carry out synchronous communication (S, C, L) between two CPU.

Above-mentioned CPU also can produce caution sound by the I/O mouth control buzzer by CPU except that control infrared transmitter/infrared receiver, and carry out by the I/O mouth control of CPU and plug in device J1, J2, and from the I/O mouth outputs level signals VOUT of CPU.

Above-mentioned infrared anti-theft net, adopt two infrared transmitter serial or parallel connections, drive by I/O mouth of CPU, two infrared receiver parallel connections, another I/O mouth control by CPU, make two the same coding infrared pulse of infrared rays, and two infrared receivers can be received each self-corresponding infrared pulse ray respectively simultaneously.

The present invention compared with the prior art, has the advantage of getting correlation active infrared line detector reliable operation, low at existing pyroscan resolving power, the weakness of defence faciostenosis, make out the purpose that can improve correlation active infrared line transmitter/infrared receiver logarithm, it is adjustable to constitute many stripe pitch, and the netting twine angle is variable, and netting twine quantity can arbitrarily increase and decrease.Thereby not only reach antitheft mode, improve the defense function of local-style dwelling houses, and greatly reduce material cost with the purpose of deploying to ensure effective monitoring and control of illegal activities.Compare with common iron branch anti-theft net, press each household one balcony two windows and calculate, this anti-theft net is the cost price of iron branch anti-theft net 30%, and anti-theft effect is more reliably than iron branch anti-theft net.

Description of drawings

Below in conjunction with accompanying drawing to the present invention's civilization in addition:

Fig. 1 is a mounting structure graph of a relation of the present invention;

Fig. 2 is the control principle figure of Fig. 1;

Fig. 3 is the anti-interference control principle figure of Fig. 2.

Embodiment

As shown in Figure 1 and Figure 2: by stationary installation 3, the wire casing 8 of CPU (80C51), infrared transmitter 1, infrared receiver 2, band [, portal 9, analog line driver 6, voltage driver 7, crystal oscillator X, buzzer B1, actuator J1, J2, power vd D and connecting line form.

Embodiment one:

Infrared transmitter 1 and infrared receiver 2 are installed in the stationary installation 3 of band [, its emission receive direction is aimed at [, the pin of infrared transmitter and infrared receiver is welded on the circuit board 4, and circuit board is fixed in the stationary installation 8 of band [with screw 5.Finish the wiring of circuit by the signal of Fig. 2.The position of stationary installation 3 in wire casing 4 of the band [of infrared transmitter 1 and infrared receiver 2 is equipped with in adjusting, the tubulose on both sides portalled aim at mutually.CPU among Fig. 2 can adopt all kinds of existing C PU products of Intell 80C51, all can as the quantity and the satisfactory arbitrary model of internal memory of I/O mouth in Intel 80 series, Atmel 89 series, KS 86 series, MC68 series, Z8 series, PIC16,17 series, UPD75,78,17 series, TMP47,87 series and the C5 series.Utilize the I/O mouth power controlling driver 6 of CPU, (this driver is public general-purpose device) also makes four diverse infrared-rays of infrared transmitter launching code mode, when four infrared receivers of correspondence are received the infrared pulse ray of corresponding encoded, and pass through voltage driver 7 and transmit signal to CPU, this moment, this CPU did not produce alarm output signal.In case when having object to block any infrared pulse ray, CPU produces the output of reporting to the police immediately.The warning output of CPU utilizes the I/O mouth to drive buzzer B1 and produces caution sound; Utilize I/O mouth actuate actuators J1, J2, make it produce open circuit and short-circuit signal; Utilize the I/O mouth to produce forms such as level output.Wherein back two kinds of way of outputs can be used for all kinds of anti-theft and alarm devices or carry out electrical equipment being connected.In actual use can all or part of as required employing.

Circuit shown in Figure 4 is generally used for infrared transmitter and infrared receiver distance and uses when far away, respectively by a CPU control infrared transmitter, and another CPU control infrared receiver.But must carry out synchronous communication between these two CPU.

Fig. 3 is the anti-interference control principle figure of Fig. 2, and concrete structure is that two infrared transmitter adopt the serial or parallel connection mode, and (only being expressed as parallel way among Fig. 3) by the I/O mouth control of CPU, two infrared receivers are connected in parallel in the I/O of CPU.This connected mode makes two infrared transmitter launch the infrared pulse ray of same-code simultaneously, makes two relative infrared receivers receive this infrared pulse ray simultaneously, forms an infrared pulse ray band that certain width is arranged.When object passed through, if do not block two rays simultaneously, then CPU can not produce the output of reporting to the police.In actual use, by adjusting the width of installation dimension with regard to scalable infrared pulse ray band.This scheme is generally used for preventing that the false alarm that winged insect classes interference such as butterfly, moth, cockchafer cause is provided with.

Fig. 4, Fig. 5 are another embodiment schematic diagram of the present invention, and embodiment is identical with embodiment 1, and control mode and principle of work are identical with Fig. 2, Fig. 3, do not give unnecessary details in addition at this.

Claims

1, a kind of by CPU, infrared transmitter (1), infrared receiver (2), analog line driver (6), voltage driver (7), the stationary installation (3) of band tubulose, wire casing (8), buzzer (B1), actuator (J), the infrared anti-theft net that crystal oscillator (X) power supply and connecting line etc. constitute, it is characterized in that: said infrared transmitter (1) and infrared receiver (2) are arranged in the wire casing (8) by the stationary installation (3) of being with [in the relative mode of 1-1, the while wire casing is corresponding have portal (9) in the [exit position, make the relative infrared transmitter of 1-1/infrared receiver constitute the two ends of netting twine, the quantity of netting twine equates with the quantity of infrared transmitter/infrared remote receiver, the density of netting twine and angle are to realize by the installation site of stationary installation in wire casing of adjusting the band [, the length of netting twine is to change by the relative distance of adjusting the two ends wire casing, by the I/O mouth of CPU (80C51) control infrared transmitter (1) and infrared receiver (2), the coded system of the pulse ray between the every pair of infrared transmitter/infrared receiver is different fully.

2, infrared anti-theft net according to claim 1, it is characterized in that: said infrared transmitter/infrared receiver both can be by a CPU control, also can control infrared transmitter with a CPU, with another CPU control infrared receiver, when adopting the control mode of two CPU, must carry out synchronous communication (S, C, L) between two CPU.

3, infrared anti-theft net according to claim 1, it is characterized in that: said CPU is except that control infrared transmitter/infrared receiver, also can produce caution sound by the I/O mouth control hummer of CPU, I/O mouth control actuator J1, J2 by CPU, and from the I/O mouth outputs level signals VOUT of CPU.

4, infrared anti-theft net according to claim 1, it is characterized in that: adopt two infrared transmitter serial or parallel connections, an I/O mouth by CPU drives, two infrared receiver parallel connections, another I/O mouth control by CPU, make two infrared transmitter launch same coding infrared pulse ray, make two infrared receivers can receive each self-corresponding infrared pulse ray respectively simultaneously.