CN2505935Y

CN2505935Y - Multibeam infrared ray incoming detector

Info

Publication number: CN2505935Y
Application number: CN 01250819
Authority: CN
Inventors: 孙广路
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-26
Filing date: 2001-09-26
Publication date: 2002-08-14
Anticipated expiration: 2011-09-26

Abstract

An active infrared ray incoming detector comprises upright columns, infrared luminescent devices, infrared receiving devices, a control circuit and a mounting-fastening component, which is characterized in that: a plurality of light holes in line are arranged on a pair of upright columns which are symmetric in shape and provided with a mask, a bottom plate and a fastening plastic part each; a strip-shaped light filtering window is covered on each light hole; the infrared luminescent devices are arranged inside the light holes of one upright column, and an infrared transmitting circuit is arranged inside the upright column; the infrared receiving devices are arranged inside the light holes of the other upright column, and a receiving circuit is arranged inside the upright column; connecting-guiding columns, power cords and alarm signal output conductors are also arranged in the upright columns. The utility model is simple in structure, reliable in operation, interference resistant, convenient to install, low in cost and suitable for the perimeter guard of rooms and other places.

Description

The multi-beam infrared intrusion detector

Technical field

The utility model belongs to the safety precaution product technical field, specifically a kind of active multi-beam infrared intrusion detector.

Background technology

Traditional indoor antitheft anti-invasion technology, the great majority of determining are to adopt firm metal anti-theft door or burglary-resisting window to protect oneself to be inviolable, and however, the technology burglary also happens occasionally.At present, some important departments adopt a kind of infrared eye of active or passive type for antitheft anti-invasion, the wherein active infrared intrusion detector that also has the optical mirror slip focusing system, as long as object blocks is arranged, detector is just reported to the police automatically, although this detector Mi has mended above-mentioned deficiency, but because beam is few, complex structure, cost are also very high, therefore are difficult to satisfy the requirement of people to its high performance-price ratio.

Summary of the invention

The purpose of this utility model provides a kind of simple in structure, multi-beam, low power consumption, active infra-red line intrusion detector cheaply.

The purpose of this utility model is achieved in that this device includes: column, connect and draw post, infrared light-emitting device, infrared receiver device, control circuit, installation secure component, it is characterized in that a plurality of unthreaded holes that distribute in upright arrangement on a pair of external form symmetry and column that have face shield, base plate and fastening plastic, be coated with strip optical filtering window in the unthreaded hole front, in the unthreaded hole of a column, be provided with infrared light-emitting device, the infrared emission circuit is set in the column; In the unthreaded hole of other column, be provided with infrared receiver device, be provided with receiving circuit in this column, in column, also be provided with to connect and draw post, power lead, alerting signal output lead.

The utility model also includes: described control circuit is: the periodic duty and feed back to single-chip microcomputer successively of Single-chip Controlling infrared emission device, infrared receiver device, and this control circuit links to each other with alarm by lead through output terminal; And determining to make the periodic duty successively of ballistic device and receiving device under the instruction.This installs described control circuit and partly contains the output that transmits, received signal importation, single-chip microcomputer and peripheral cell.This novel as required can short-distance alarm also can long-distance alarm.

The utility model is owing to a plurality of emissions of series arrangement, receiving device on the column face shield; The monolithic function that links to each other with described emission and receiving device is carried out the instruction that makes it to circulate and work successively; Described monolithic function is sent alerting signal when received signal is undesired several times, therefore have simple and reasonable, antijamming capability is strong, easy for installation, characteristics such as cost is low, applied range, is applicable to room and other place boundary defence.

Description of drawings

Fig. 1 is the utility model emission, reception two part appearance structure synoptic diagram.

Fig. 2 is the utility model emission, reception two partial interior sectional structure synoptic diagram.

Fig. 3 is a circuit working schematic diagram of the present utility model.

Below by example of the present utility model, illustrate that more specifically this embodiment is an example that exemplifies, it will not limit scope of the present utility model.

Embodiment

As Fig. 1, Fig. 2, shown in Figure 3: have column 1,1a that face shield 2,2a, base plate 3,3a constitute a pair of external form symmetry, a plurality of unthreaded holes 4, the 4a of distributing in upright arrangement on column face shield 2,2a, the front of unthreaded hole 4,4a covers with strip optical filtering window 5,5a, is provided with infraluminescence pipe D in the unthreaded hole of column 1 ₁-D ₄, the infrared emission circuit is set in the column; In the unthreaded hole of column 1a, be provided with infrared receiving tube T ₁-T ₄, be provided with receiving circuit in this column.This novel detector constitutes one by some parallel Infrared down in working order and takes precautions against the plane.In column, also be provided with to connect and draw

post

6,6a, electric

source line interface

7,7a, alerting signal output interface 8 and control circuit board 9.

For ease of the narration principle, device is all numbered (as shown in Figure 3, being embodiment with four beams) in this Circuits System fundamental diagram, at t1 constantly, and by single-chip microcomputer IC ₁(89C * * 51) control transmitter unit is exported through 38KH through 19 pin _zThe modulating-coding pulse signal is through transistor Q ₁Amplify, drive infraluminescence pipe D ₁Send modulated infrared signal (R ₁～R ₄Be current-limiting resistance), simultaneously by receiving element, infrared receiver spare T ₁Receive, and be transformed into coded pulse signal in-gate circuit IC _2-1, through IC _2-1Anti-phase back input nand gate IC circuit _3-1, while and single-chip microcomputer IC ₁Input to IC _3-1Another pin signal Synchronization with after, make diode D ₈Anode be output as low or high definite logic level, this level signal is as normal feedback signal input single-chip microcomputer IC ₁The 8th pin, single-chip microcomputer IC ₁Signal judges that system works is normal in view of the above, IC ₁The 2nd pin output high level, the relay adhesive makes normally closed contact K open circuit, and the alert signal of not transmitting messages, all the other emissions and receiving circuit are not all worked during this.

As the t2 moment, single-chip microcomputer IC ₁The 18th pin output pulse signal is through Q ₂Amplify, drive D ₂Send modulated infrared signal, by T ₂Receive, and through IC _2-2, anti-phase back input IC _3-2, and and single-chip microcomputer IC ₁The 13rd pin inputs to IC _3-2Another pin pulse signal locking phase with, make D ₉Positive pole presents low or high definite logic level, this level input single-chip microcomputer IC ₁The 8th pin, single-chip microcomputer IC ₁Signal judges that system works is normal in view of the above.And the alert signal of not transmitting messages, all the other emissions and receiving circuit are not still worked during this.

In t3, the t4 moment, the 3rd, the 4th part transceiver circuit periodic duty process successively and principle are the same.

Be blocked as the infrared ray light path when the tn moment, single-chip microcomputer 8 pin level rules are unusual, single-chip microcomputer IC ₁Repeat to send (3 times) pulse signal by the pin in the 16th to 19 pin, as IC ₁8 pin input logic levels still do not conform to IC with the logic level of internal processes regulation ₁The judgement system is received unusually, and by IC ₁The 2nd pin output low level makes Q ₅End, relay J discharges, and contact K connects and starts warning circuit and sends alerting signal.

IC among the figure ₁The JZ that 4,5 pin connect is a clock frequency crystal oscillator element, C ₃, C ₄, C ₅Be high-frequency bypass capacitor.10K-8 is 8 resistor chains, is IC ₁12～19 pin pull-up resistors, D ₆For duty indication luminotron, at the Circuits System operation irregularity, alarm condition can be flashed or be extinguished when reaching non-transformer, and is just often luminous.R ₅Be D ₆Current-limiting resistance, C ₁, C ₆Be low frequency filtering electric capacity.WY is a three terminal regulator, to IC ₁20 pin provide stable DC voltage, Q ₅For driving the amplifying triode of relay, D ₇Be damper diode, to absorb harmful crest voltage that the J winding produces, protection Q ₅Operate as normal.R ₇, C ₂The filter element of steady direct current is provided for each emission, receiving circuit.

Claims

1. active infra-red line intrusion detector, it includes: column, connect and draw post, infrared light-emitting device, infrared receiver device, control circuit, installation secure component, it is characterized in that a plurality of unthreaded holes that distribute in upright arrangement on a pair of external form symmetry and column that have face shield, base plate and fastening plastic, be coated with strip optical filtering window in the unthreaded hole front, in the unthreaded hole of a column, be provided with infrared light-emitting device, the infrared emission circuit is set in the column; In the unthreaded hole of other column, be provided with infrared receiver device, be provided with receiving circuit in this column, in post, also be provided with to connect and draw post, power lead, alerting signal output lead.

2. active infra-red line intrusion detector according to claim 1, it is characterized in that: described control circuit is: the periodic duty and feed back to single-chip microcomputer successively of Single-chip Controlling infrared emission device, infrared receiver device, this control circuit links to each other with alarm by lead through output terminal.

3. active infra-red line intrusion detector according to claim 1 and 2 is characterized in that: alarm can short-distance alarm also can long-distance alarm.