CN1339766A - Reflective infrared anti-theft net - Google Patents

Abstract

The reflective infrared anti-theft net consists of CPU, infrared emitters, infrared receiver, power driver, voltage driver, AGC circuit, photosensitive element, A/D converter, positioner, etc. The infrared emitters emit fan shaped infrared beams in different coding mode, and when some object passes, the reflected beam is received by the infrared receiver and the buzzer and the executor output alarm signal after the CPU judgment. The present invention has the adaptive guard environment learning capacity and the light change interference resisting capacity. It is suitable for the guard in opened balcony door,l French window, outward pushing window and other places.

Description

Reflective infrared anti-theft net

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

In order to provide effective electronics to take precautions against equipment to the position that subjects to invade in the buildingss such as the window of ordinary residence, balcony door, to substitute original metal anti-theft net and other traditional electronic induction equipment, we had once declared the invention and the utility model patent of " infrared anti-theft net ", had proposed the scheme of correlation infrared anti-theft net.Balcony provided very effective strick precaution in this scheme can reach the many fans window on a plane body of wall in force really, and price has very big marketing potentiality well below the metal anti-theft net.But also there are some defectives: 1, be difficult to adapt to, particularly to the strick precaution at positions such as the balcony that protrudes, French window the time, install and use all inconvenient for the Suresh Kumar of modern architecture external styling; Externally also there is limitation in the strick precaution of pushing-type window.2, when high building exterior wall is installed, aiming at emission has certain difficulty with reception; Construction simultaneously is dangerous higher.

The objective of the invention is the defective that exists in the above-mentioned patent, employing with in the above-mentioned patent penetrating end and receiving end is become the scheme of one, propose a kind ofly to be installed in the Defensive Target top with hang, do not need to carry out alignment function and just can use easily, but opposite house, window or passage provide the reflective infrared anti-theft net of effective strick precaution.This product can be by increasing, subtract emission/receiving unit quantity to adapt to the Defensive Target of different area.

The objective of the invention is to be achieved by the following scheme, by CPU, infrared transmitter, infrared receiver, analog line driver, voltage driver, agc circuit, light activated element, A/D converter, the [that the platypelloid type outlet is arranged, locating device, the section bar groove, hummer, actuator, crystal oscillator, the emission-type infrared anti-theft net that power supply and connecting line etc. constitute, wherein infrared transmitter is installed in respectively in the [that the platypelloid type outlet is arranged of both sides, through the fan-shaped infrared ray beam of platypelloid type outlet emission, infrared receiver is installed in another and is positioned at the middle [that the platypelloid type outlet is arranged, receive when the object infrared ray that its surface is reflected during by above-mentioned infrared ray beam, passing to CPU by voltage driver handles, the beam that sends when the infrared ray transmitter is reflected by the environment object and when being received by infrared receiver, infrared receiver transmits this through voltage driver to CPU, CPU control agc circuit carries out automatic gain compensation to analog line driver, regulates the emissive porwer of infrared emission tube automatically.

It is different fully that above-mentioned reflective infrared anti-theft net is controlled the pulse code form that each infrared transmitter launches by the I/O of CPU; When adopting two infrared transmitter serial or parallel connections to control by the I/O mouth of CPU, these two the same coding infrared pulse of infrared transmitter rays.

Above-mentioned reflective infrared anti-theft net can be launched by array/receiving unit constitutes, when emission/receiving unit during more than one group, both can be by a CPU control, and also can every group control respectively with a CPU; When adopting a plurality of CPU to control respectively, must carry out synchronous communication (S, C, L) between each CPU.

Above-mentioned CPU is except that control infrared transmitter and infrared receiver, and also the I/O mouth control hummer B1 by CPU produces caution sound, by other I/O mouth control actuator J1 output switch control signal of CPU.

Above-mentioned reflective infrared anti-theft net, by light activated element to external world light change and to sample, and it is transmitted to CPU by A/D converter, CPU handles back control agc circuit to this analog line driver is carried out automatic gain compensation, regulates the emissive porwer of infrared transmitter automatically.

Above-mentioned agc circuit both can adopt the connecting mode of an analog line driver of an agc circuit control when the power controlling driver, also can adopt an agc circuit to control the connecting mode of several analog line drivers.

Above-mentioned A/D converter both can adopt the device of absolute version, also can adopt the CPU that includes A/D converter to substitute.

Basic comprising of the present invention is similar to the correlation infrared anti-theft net, and existing its taken precautions against reliable, the advantage that price is suitable, have again easy for installation, to the adaptable characteristics of buildings profile.And can be by increasing, subtract emission/receiving unit quantity to adapt to the defence purpose of different area.The present invention makes infrared anti-theft net form seriation, helps the penetration and promotion of this series products.

Below in conjunction with accompanying drawing the present invention is illustrated:

The reflective infrared anti-theft net defence synoptic diagram of Fig. 1 for being made of two emission/reception groups, each assembly by CPU control, has represented to carry out between two CPU synchronous communication (S.C.L) respectively among the figure among the figure.

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

Fig. 3 is the control principle figure of 1 assembly, but has adopted the connecting mode of two analog line drivers of an agc circuit control;

Fig. 4 be Fig. 2 apart from enhancement mode control principle figure;

Fig. 5 is the anti-wisp interference type control principle figure of Fig. 2;

Fig. 6 is the anti-ambient light Interference Control schematic diagram of Fig. 2;

Fig. 7 is another embodiment of Fig. 6, adopts A/D converter 8 and CPU in the CPU alternate figures 5 of being with A/D converter.

As shown in Figure 1 and Figure 2: emission/receiving unit is made up of with optical filter 11 and connecting line CPU, infrared transmitter 1, infrared receiver 2, analog line driver 3, voltage driver 4, agc circuit 5, the [6 by the platypelloid type outlet, crystal oscillator X, actuator J1, power vd D, hummer B1, locating device 9, section bar groove 10, sealing.

Embodiment one:

CPU is by agc circuit 5, power controlling driver 3, and drive installation exports the infrared ray device 1 at 6 places in locating device 9 both sides flat, makes it send the fan-shaped infrared ray beam of varying strength, different coding respectively.When object passed through this fan beam, the infrared receiver 2 that is installed in the flat-shaped outlet of middle flat 6 places received the infrared ray that this body surface reflects, and exports to CPU by voltage driver 4.CPU produces alerting signal with judging as calculated: driving hummer B1 sends and rings; And actuate actuators J1 generation ON/OFF signal, this signal can be used for being connected with all kinds of anti-theft alarming control hosts or other execution electrical equipment.CPU among the figure can adopt the CPU of quantity and the satisfactory arbitrary model of internal memory of all kinds of existing I/O.

Embodiment two:

Figure 3 shows that an agc circuit 5 controls the connection of a plurality of analog line drivers 3 simultaneously.

Embodiment three:

When the defence distance is far away, can adopt the serial or parallel connection method to increase infrared transmitter 1 quantity, to increase the infrared energy, Figure 3 shows that parallel way.All the other control procedure principles are identical with last example, do not give unnecessary details in addition at this.

Embodiment four:

When the both sides flat exports 6 places and adopts two (showing as Fig. 5) or a plurality of infrared transmitter 1 to send the fan-shaped infrared pulse beam of different coding respectively, can prevent than wisp by the time produce false alarm.All the other control procedure principles are identical with example one, do not give unnecessary details in addition at this.

Embodiment five:

When often having intense light to change in the defence area, can be by connection shown in Figure 6, the ambient light sample circuit that employing is made of light activated element 7 and A/D converter 8 is to the CPU output signal, CPU is according to this signal controlling agc circuit 5, and then power controlling driving circuit 3, make the emissive porwer of infrared transmitter 1 produce respective change, to avoid false alarm or to fail to report the police.All the other control procedure principles are identical with last example, do not give unnecessary details in addition at this.

Embodiment six:

A/D converter 8 among the embodiment five and CPU can adopt connecting mode shown in Figure 7 to be replaced by any CPU that I/O mouth quantity that has A/D converter and internal memory satisfy request for utilization.All the other control procedure principles are identical with last example, do not give unnecessary details in addition at this.

Claims (7)

1, a kind of by CPU, infrared transmitter (1), infrared receiver (2), analog line driver (3), voltage driver (4), agc circuit (5), the [(6) that the platypelloid type outlet is arranged, light activated element (7), A/D converter (8), crystal oscillator (X), actuator (J1), power supply (VDD), hummer (B1), section bar groove (10), locating device (9), the reflective infrared anti-theft net that sealing constitutes with optical filter (11) and connecting line, it is characterized in that: infrared transmitter (1) is installed in respectively in the [(6) that the platypelloid type outlet is arranged of both sides, through the fan-shaped infrared ray beam of platypelloid type outlet emission, infrared receiver (2) is installed in another and is positioned at the middle [(6) that the platypelloid type outlet is arranged, receive when the object infrared ray that its surface is reflected during by above-mentioned infrared ray beam, passing to CPU by voltage driver (4) handles, the beam that sends when infrared ray transmitter (1) is reflected by the environment object and by infrared receiver (2) when receiving, infrared receiver (2) transmits this through voltage driver (4) to CPU, CPU control agc circuit (5) carries out automatic gain compensation to analog line driver (3), regulates the emissive porwer of infrared transmitter (1) automatically.

2, according to right 1 described reflective infrared anti-theft net, it is characterized in that: it is different fully to control the pulse code form that each infrared transmitter (1) reflected by the I/O mouth of CPU; When adopting two infrared transmitter (1) serial or parallel connection to control by the I/O mouth of CPU, the same coding infrared pulse ray of this two infrared transmitter (1) emission.

3, according to right 1 described reflective infrared anti-theft net, it is characterized in that: said emission/receiving unit both can singlely constitute, can arrange with many groups form again and constitute, when emission/receiving unit during more than one group, both can be by CPU control, also can every group control respectively with a CPU; When adopting a plurality of CPU to control respectively, must carry out synchronous communication (S.C.L) between each CPU.

4, according to right 1 described reflective infrared anti-theft net, it is characterized in that: said CPU is except that control infrared transmitter (1) and infrared receiver (2), also can produce caution sound, by other I/O mouth control actuator (J1) output switch control signal of CPU by the I/O mouth control hummer (B1) of CPU.

5, according to right 1 described reflective infrared anti-theft net, it is characterized in that: employing light activated element (7) light variation is to external world sampled, and it is passed through A/D converter (8) transmit to CPU, CPU handles back control agc circuit (5) to this analog line driver (3) is carried out automatic gain compensation, regulates the emissive porwer of each infrared transmitter automatically.

6, according to right 1 or 5 described reflective infrared anti-theft nets, it is characterized in that: said agc circuit (5) is when power controlling driver (3), both can adopt connecting mode, also can adopt the connecting mode of controlling several analog line drivers (3) with an agc circuit (5) with an agc circuit (a 5) analog line driver of control (3).

7, according to right 1 or 5 described reflective infrared anti-theft nets, it is characterized in that: said A/D converter (8) both can adopt the device of absolute version, also can adopt the CPU that includes A/D converter to substitute A/D converter (8) and CPU.

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