CN202976372U - Microwave burglar alarm - Google Patents
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Abstract
一种微波防盗报警器，有微波探头和主机两部分组成，微波探头的集成电路IC1产生的微波信号发射到空间，形成一个立体空间微波警戒网。当有人在网内走动时，就会产生频移。此频移信号通过IC1内部监测放大后，从6脚输出超低频信号，并经缓冲级IC2再送往主机的f端，进行比较鉴别并报警。主机的运算放大器IC3、IC4组成的窗口式电压比较器，对信号进行比较鉴别。如果信号电压在两指定的比较电压中间，则IC3、IC4均无电压输出。当信号电压高于IC3的2脚电压或低于IC4的3脚电压时，IC3或IC4则输出高电压经V1、V2和R6组成的或门电路输出高电平经R7加到V3的门极使V3触发导通,使IC5、IC6得电工作。IC5产生的语音信号由4脚输出，经过低通滤波后，送入IC6进行音频功率放大，推动扬声器B发声。
A microwave anti-theft alarm is composed of a microwave probe and a host. The microwave signal generated by the integrated circuit IC 1 of the microwave probe is sent into space to form a three-dimensional space microwave warning network. When someone walks in the net, there will be a frequency shift. After the frequency shift signal is amplified by the internal monitoring of IC 1 , the ultra-low frequency signal is output from pin 6, and then sent to the f terminal of the host through the buffer stage IC 2 for comparison, identification and alarm. The window-type voltage comparator composed of operational amplifiers IC 3 and IC 4 of the host computer compares and identifies the signals. If the signal voltage is between the two specified comparison voltages, IC 3 and IC 4 will have no voltage output. When the signal voltage is higher than the voltage of pin 2 of IC 3 or lower than the voltage of pin 3 of IC 4 , IC 3 or IC 4 outputs high voltage through the OR gate circuit composed of V 1 , V 2 and R 6 to output high level through R 7 is added to the gate of V 3 to trigger V 3 to be turned on, so that IC 5 and IC 6 are energized to work. The voice signal generated by IC 5 is output by pin 4, and after low-pass filtering, it is sent to IC 6 for audio power amplification to drive speaker B to produce sound.
Description
技术领域 technical field
本实用新型为一种微波防盗报警器。 The utility model relates to a microwave anti-theft alarm.
背景技术 Background technique
随着生活水平的提高，人们越来越重视安全问题，所以防盗报警器在家庭以及货仓等场所防盗中起着非常重要的作用。防盗报警器是用物理方法或电子技术，自动探测发生在布防监测区域内的侵入行为，产生报警信号，提示值班人员采取对策。 With the improvement of living standards, people pay more and more attention to safety issues, so anti-theft alarms play a very important role in anti-theft in places such as homes and warehouses. The anti-theft alarm uses physical methods or electronic technology to automatically detect intrusions in the armed monitoring area, generate an alarm signal, and prompt the on-duty personnel to take countermeasures.
发明内容 Contents of the invention
本实用新型的目的在于提供一种结构合理，成本低的微波防盗报警器。 The purpose of the utility model is to provide a microwave anti-theft alarm with reasonable structure and low cost.
本实用新型是这样实现的：微波防盗报警器有微波探头和主机两部分组成，微波探头电路为，集成电路IC1的1、2脚外接环形天线，4脚接电源正极，6脚接电阻R1一端，3脚接电容C1一端，5脚接电容C1另一端，7脚接地；集成电路IC2的2脚接电阻R2一端，电阻R2另一端接主机的f端，集成电路IC2的6脚接主机的f端，集成电路IC2的7脚接电源正极，集成电路IC2的3脚接电阻R1另一端，集成电路IC2的4脚接地；电容C2一端接电源正极，电容C2另一端接地。 The utility model is realized in this way: the microwave anti-theft alarm is composed of a microwave probe and a host. One end of 1 , pin 3 is connected to one end of capacitor C 1 , pin 5 is connected to the other end of capacitor C 1 , and pin 7 is grounded; pin 2 of integrated circuit IC 2 is connected to one end of resistor R 2 , and the other end of resistor R 2 is connected to terminal f of the host. Pin 6 of IC 2 is connected to terminal f of the host, pin 7 of integrated circuit IC 2 is connected to the positive pole of the power supply, pin 3 of integrated circuit IC 2 is connected to the other end of resistor R 1 , pin 4 of integrated circuit IC 2 is grounded; one end of capacitor C 2 is connected to The positive pole of the power supply, and the other end of the capacitor C2 is grounded.
主机电路为，运算放大器IC3的2脚连接主机f端，运算放大器IC3的2脚分别连接运算放大器IC4的3脚、电容C3的一端，电容C3的另一端接地，运算放大器IC3的3脚分别连接电阻R3、电阻R4，电阻R3的另一端接电源正极，运算放大器IC3的7脚连接电源正极，运算放大器IC3的4脚接地；运算放大器IC3的6脚连接二极管V1，二极管V1另一端接电阻R7，电阻R7另一端接单向晶闸管V3的第1接点，单向晶闸管V3的第1接点连接电容C4，电容C4另一端接地，电阻R4的另一端分别接电阻R5的一端、运算放大器IC4的2脚，电阻R5的另一端接地；运算放大器IC4的4脚接地，运算放大器IC4的7脚接电源正极，运算放大器IC4的6脚连接二极管V2，二极管V2另一端接电阻R6，电阻R6另一端接地；电容C5的一端接电源正极，电容C5的另一端接单向晶闸管V3的第2接点，单向晶闸管V3的第3接点连接复位按钮SB一端，复位按钮SB另一端接电源负极；电阻R8的一端接电源正极，电阻R8的另一端分别连接稳压二极管V4、电阻R9、运算放大器IC5的10脚、5脚；电阻R9另一端接分别连接运算放大器IC5的3脚、电容C6的一端；运算放大器IC5的4脚分别连接电阻R10、电容C7的一端、电容C8的一端；电容C8的另一端分别连接电阻R11、运算放大器IC6的3脚；运算放大器IC6的6脚连接电源正极，运算放大器IC6的1脚连接电容C9的一端，电容C9的另一端连接运算放大器IC6的2脚；运算放大器IC6的5脚连接电容C10的一端；电容C10的另一端连接扬声器B一端，扬声器B另一端分别连接稳压二极管V4另一端、电容C6的另一端、运算放大器IC5的1脚、电阻R10另一端、电容C7的另一端、电阻R11另一端、运算放大器IC6的8脚及4脚；电阻R12一端接电源正极，电阻R12另一端分别接备用电池GB正极、二极管V5一端，备用电池GB负极接备用电池的电源开关S，备用电池的电源开关S另一端接地；二极管V5另一端分别接电源正极、电容C13的一端，电容C13的另一端接地；二极管V6、二极管V7、二极管V8、二极管V9连接构成的整流桥连接在电路中。
The host circuit is that pin 2 of operational amplifier IC 3 is connected to terminal f of the host computer, pin 2 of operational amplifier IC 3 is respectively connected with pin 3 of operational amplifier IC 4 , one end of capacitor C3 , the other end of capacitor C3 is grounded, and operational amplifier IC The 3 pins of 3 are respectively connected to the resistor R 3 and the resistor R 4 , the other end of the resistor R 3 is connected to the positive pole of the power supply, the 7 pin of the operational amplifier IC 3 is connected to the positive pole of the power supply, the 4 pin of the operational amplifier IC 3 is grounded; the 6 pin of the operational amplifier IC 3 The pin is connected to the diode V 1 , the other end of the diode V 1 is connected to the resistor R7, the other end of the resistor R7 is connected to the first contact of the one-way thyristor V 3 , the first contact of the one-way thyristor V 3 is connected to the capacitor C4, the other end of the capacitor C4 is grounded, and the resistor The other end of R4 is respectively connected to one end of resistor R5 , pin 2 of operational amplifier IC4, and the other end of resistor R5 is grounded; pin 4 of operational amplifier IC4 is grounded, pin 7 of operational amplifier IC4 is connected to the positive pole of the power supply, and pin 7 of operational amplifier IC4 is connected to the positive pole of the power supply. Pin 6 is connected to diode V 2 , the other end of diode V 2 is connected to resistor R6, and the other end of resistor R6 is grounded; one end of capacitor C 5 is connected to the positive pole of the power supply, and the other end of capacitor C 5 is connected to the second contact point of unidirectional thyristor V 3 , one-way The third contact of the thyristor V3 is connected to one end of the reset button SB, and the other end of the reset button SB is connected to the negative pole of the power supply; one end of the resistor R8 is connected to the positive pole of the power supply, and the other end of the resistor R8 is respectively connected to the Zener diode V4 , the resistor R9, and the operational amplifier Pin 10 and pin 5 of IC5; the other end of resistor R9 is connected to pin 3 of operational amplifier IC5 and one end of capacitor C6 ; pin 4 of operational amplifier IC5 is respectively connected to resistor R10, one end of capacitor C7 , and one end of capacitor C8 ; The other end of capacitor C8 is connected to resistor R11 and pin 3 of operational amplifier IC6 respectively; pin 6 of operational amplifier IC6 is connected to the positive pole of the power supply, pin 1 of operational amplifier IC6 is connected to one end of capacitor C9 , and the other end of capacitor C9 is connected to the operational Pin 2 of the amplifier IC6; pin 5 of the operational amplifier IC6 is connected to one end of the capacitor C 10 ; the other end of the capacitor C 10 is connected to one end of the speaker B, and the other end of the speaker B is respectively connected to the other end of the Zener diode V 4 and the other end of the capacitor C 6 , pin 1 of operational amplifier IC5, the other end of resistor R10, the other end of capacitor C7 , the other end of resistor R11,
本实用新型的优点是，监视半径约6米，若在此范围内有作案分子走动时，它会发出警报，且无监视死区。为防止人为破坏外接连线，它还具有断线报警功能。 The utility model has the advantages that the monitoring radius is about 6 meters, if there are criminals walking around within this range, it will give an alarm, and there is no monitoring dead zone. In order to prevent man-made damage to the external connection, it also has a disconnection alarm function.
附图说明 Description of drawings
图1为微波探头电路图； Fig. 1 is a microwave probe circuit diagram;
图2为主机部分电路如图。 Figure 2 is the circuit diagram of the host part.
具体实施方式 Detailed ways
下面结合附图详细说明：微波探头电路如图1所示，集成电路IC1的1、2脚外接环形天线，4脚接电源正极，6脚接电阻R1一端，3脚接电容C1一端，5脚接电容C1另一端，7脚接地；集成电路IC2的2脚接电阻R2一端，电阻R2另一端接主机的f端，集成电路IC2的6脚接主机的f端，集成电路IC2的7脚接电源正极，集成电路IC2的3脚接电阻R1另一端，集成电路IC2的4脚接地；电容C2一端接电源正极，电容C2另一端接地。 The microwave probe circuit is shown in Figure 1, the 1st and 2nd pins of the integrated circuit IC 1 are connected to the external loop antenna, the 4th pin is connected to the positive pole of the power supply, the 6th pin is connected to the end of the resistor R1 , and the 3rd pin is connected to the end of the capacitor C1 , pin 5 is connected to the other end of capacitor C 1 , pin 7 is grounded; pin 2 of integrated circuit IC 2 is connected to one end of resistor R 2 , the other end of resistor R 2 is connected to terminal f of the host, pin 6 of integrated circuit IC 2 is connected to terminal f of the host , pin 7 of integrated circuit IC 2 is connected to the positive pole of the power supply, pin 3 of integrated circuit IC 2 is connected to the other end of resistor R 1 , pin 4 of integrated circuit IC 2 is grounded; one end of capacitor C 2 is connected to the positive pole of the power supply, and the other end of capacitor C 2 is grounded.
主机电路如图2所示：运算放大器IC3的2脚连接主机f端，运算放大器IC3的2脚分别连接运算放大器IC4的3脚、电容C3的一端，电容C3的另一端接地，运算放大器IC3的3脚分别连接电阻R3、电阻R4，电阻R3的另一端接电源正极，运算放大器IC3的7脚连接电源正极，运算放大器IC3的4脚接地； The host circuit is shown in Figure 2: pin 2 of the operational amplifier IC 3 is connected to terminal f of the host, pin 2 of the operational amplifier IC 3 is respectively connected to pin 3 of the operational amplifier IC 4 , one end of the capacitor C3 , and the other end of the capacitor C3 is grounded , the 3 pins of the operational amplifier IC 3 are respectively connected to the resistor R 3 and the resistor R 4 , the other end of the resistor R 3 is connected to the positive pole of the power supply, the 7 pins of the operational amplifier IC 3 are connected to the positive pole of the power supply, and the 4 pins of the operational amplifier IC 3 are grounded;
运算放大器IC3的6脚连接二极管V1，二极管V1另一端接电阻R7，电阻R7另一端接单向晶闸管V3的第1接点，单向晶闸管V3的第1接点连接电容C4，电容C4另一端接地， Pin 6 of operational amplifier IC 3 is connected to diode V 1 , the other end of diode V 1 is connected to resistor R7, the other end of resistor R7 is connected to the first contact point of unidirectional thyristor V 3 , the first contact point of unidirectional thyristor V 3 is connected to capacitor C4, and the capacitor The other end of C4 is grounded,
电阻R4的另一端分别接电阻R5的一端、运算放大器IC4的2脚，电阻R5的另一端接地；运算放大器IC4的4脚接地，运算放大器IC4的7脚接电源正极，运算放大器IC4的6脚连接二极管V2，二极管V2另一端接电阻R6，电阻R6另一端接地；电容C5的一端接电源正极，电容C5的另一端接单向晶闸管V3的第2接点，单向晶闸管V3的第3接点连接复位按钮SB一端，复位按钮SB另一端接电源负极；电阻R8的一端接电源正极，电阻R8的另一端分别连接稳压二极管V4、电阻R9、运算放大器IC5的10脚、5脚；电阻R9另一端接分别连接运算放大器IC5的3脚、电容C6的一端；运算放大器IC5的4脚分别连接电阻R10、电容C7的一端、电容C8的一端；电容C8的另一端分别连接电阻R11、运算放大器IC6的3脚；运算放大器IC6的6脚连接电源正极，运算放大器IC6的1脚连接电容C9的一端，电容C9的另一端连接运算放大器IC6的2脚；运算放大器IC6的5脚连接电容C10的一端；电容C10的另一端连接扬声器B一端，扬声器B另一端分别连接稳压二极管V4另一端、电容C6的另一端、运算放大器IC5的1脚、电阻R10另一端、电容C7的另一端、电阻R11另一端、运算放大器IC6的8脚及4脚；电阻R12一端接电源正极，电阻R12另一端分别接备用电池GB正极、二极管V5一端，备用电池GB负极接备用电池的电源开关S，备用电池的电源开关S另一端接地；二极管V5另一端分别接电源正极、电容C13的一端，电容C13的另一端接地；二极管V6、二极管V7、二极管V8、二极管V9连接构成的整流桥连接在电路中。
The other end of the resistor R4 is respectively connected to one end of the resistor R5 , pin 2 of the operational amplifier IC4, and the other end of the resistor R5 is grounded; pin 4 of the operational amplifier IC4 is grounded, pin 7 of the operational amplifier IC4 is connected to the positive pole of the power supply, and the operational amplifier IC4 Pin 6 of the diode V 2 is connected to the diode V 2 , the other end of the diode V 2 is connected to the resistor R6, and the other end of the resistor R6 is grounded; one end of the capacitor C 5 is connected to the positive pole of the power supply, and the other end of the capacitor C 5 is connected to the second contact point of the one-way thyristor V 3 . Connect one end of the reset button SB to the third contact of the thyristor V3 , the other end of the reset button SB is connected to the negative pole of the power supply; one end of the resistor R8 is connected to the positive pole of the power supply, and the other end of the resistor R8 is respectively connected to the Zener diode V4 , the resistor R9, and the operation Pin 10 and pin 5 of amplifier IC5; the other end of resistor R9 is connected to pin 3 of operational amplifier IC5 and one end of capacitor C6 ; pin 4 of operational amplifier IC5 is respectively connected to resistor R10, one end of capacitor C7 , and capacitor C8 One end; the other end of capacitor C8 is connected to resistor R11 and pin 3 of operational amplifier IC6 respectively; pin 6 of operational amplifier IC6 is connected to the positive pole of the power supply, pin 1 of operational amplifier IC6 is connected to one end of capacitor C9 , and the other end of capacitor C9 is connected to Pin 2 of the operational amplifier IC6; pin 5 of the operational amplifier IC6 is connected to one end of the capacitor C10 ; the other end of the capacitor C10 is connected to one end of the speaker B, and the other end of the speaker B is respectively connected to the other end of the Zener diode V4 and the other end of the capacitor C6 One end, pin 1 of operational amplifier IC5, the other end of resistor R10, the other end of capacitor C7 , the other end of resistor R11,
微波探头电路的工作过程为，由多普勒效应传感集成电路IC1产生的微波信号从1、2脚外接环形天线ANT发射到空间，形成一个立体空间微波警戒网。当有人在网内走动时，从人体反射回天线的微波信号与原发射信号就会产生频移。此频移信号通过IC1内部监测放大后，从6脚输出超低频信号，并经缓冲级IC2再送往主机的f端，由主机进行比较鉴别并报警。IC1的6脚静态电压为6V，动态输出电压≥50mV；移动目标越近，动态输出电压变化幅度就越大，最大可达到5V以上。 The working process of the microwave probe circuit is that the microwave signal generated by the Doppler effect sensing integrated circuit IC 1 is transmitted to the space from the external loop antenna ANT at pins 1 and 2, forming a three-dimensional space microwave warning network. When someone walks in the network, the microwave signal reflected from the human body back to the antenna and the original transmitted signal will have a frequency shift. After the frequency shift signal is amplified by the internal monitoring of IC 1 , the ultra-low frequency signal is output from pin 6, and then sent to the f terminal of the host through the buffer IC 2 , which is compared and identified by the host and gives an alarm. The static voltage of pin 6 of IC 1 is 6V, and the dynamic output voltage is ≥50mV; the closer the moving target is, the greater the range of dynamic output voltage changes, and the maximum can reach more than 5V.
主机部分电路的工作过程为，运算放大器IC3、IC4组成的窗口式电压比较器，对探头送来的信号进行比较鉴别。如果信号电压在两指定的比较电压中间，则IC3、IC4均无电压输出。当信号电压高于IC3的2脚电压或低于IC4的3脚电压时，IC3或IC4则输出高电压经V1、V2和R6组成的或门电路输出高电平经R7加到晶闸管V3的门极使V3触发导通,使IC5、IC6得电工作。IC5产生的语音信号由4脚输出，经过低通滤波后，送入IC6功放集成电路进行音频功率放大，推动扬声器B发声。 The working process of the main circuit part is that the window type voltage comparator composed of operational amplifiers IC 3 and IC 4 compares and identifies the signals sent by the probe. If the signal voltage is between the two specified comparison voltages, IC 3 and IC 4 will have no voltage output. When the signal voltage is higher than the voltage of pin 2 of IC 3 or lower than the voltage of pin 3 of IC 4 , IC 3 or IC 4 outputs high voltage through the OR gate circuit composed of V 1 , V 2 and R 6 to output high level through R 7 is added to the gate of thyristor V 3 to trigger V 3 to be turned on, so that IC 5 and IC 6 are energized to work. The voice signal generated by IC 5 is output by pin 4, and after low-pass filtering, it is sent to IC 6 power amplifier integrated circuit for audio power amplification, which drives speaker B to produce sound.
如果探头与主机之间的连线被人为弄断，f端电压会变成0V，IC4即输出高电平，电路也会产生报警声。电路中SB是报警后的复位按钮。R8、V4提供IC5 的3V工作电压，R9、R6组成语音集成电路的时钟振荡回路。 If the connection between the probe and the host is broken artificially, the voltage at terminal f will become 0V, IC 4 will output high level, and the circuit will also generate an alarm sound. SB in the circuit is the reset button after the alarm. R 8 and V 4 provide the 3V working voltage of IC 5 , and R 9 and R6 form the clock oscillation circuit of the voice integrated circuit.
报警器的电源部分由交直流电源且能自动切换，以保证电网停电或犯罪分子切断照明线路后仍能照常工作。平时220V交流电经变压器T降压、V6～V9整流和C13滤波后，输出约18V直流电压。此电压高于备用电池GB的15V电压，故V5反偏截止，电池不供电。有交流电时，18V直流电压还通过R12给备用电池GB以小电流（≤3mA）、长时间缓慢充电，使电池使用寿命大大延长。 The power part of the alarm is powered by AC and DC and can be switched automatically to ensure that it can still work as usual after the power grid is cut off or the criminals cut off the lighting line. Usually 220V AC is stepped down by transformer T, rectified by V 6 ~ V 9 and filtered by C 13 , and outputs about 18V DC voltage. This voltage is higher than the 15V voltage of the backup battery GB, so V 5 reverse bias is cut off, and the battery does not supply power. When there is AC power, the 18V DC voltage will also charge the backup battery GB with a small current (≤3mA) through R 12 and charge it slowly for a long time, so that the service life of the battery is greatly extended.
IC1选用国产RD627型功率多普勒效应传感集成电路，它是利用超声波传播的多普勒效应而制成的一种传感器，它能将物体移动的位移信号转换成相应的电信号。IC2～IC4均可用μA714高增益集成运算放大器。 IC 1 uses the domestic RD627 power Doppler effect sensor integrated circuit, which is a sensor made by using the Doppler effect of ultrasonic propagation, and it can convert the displacement signal of the moving object into a corresponding electrical signal. IC 2 ~ IC 4 can use μA714 high-gain integrated operational amplifier.
IC5为国产LQ46型“四合一”语音集成电路，它能产生四句固定化语言信号，本电路可以选用“抓贼呀”语音循环声。 IC 5 is a domestic LQ46 type "four-in-one" voice integrated circuit, which can produce four sentences of fixed language signals. This circuit can select the voice cycle sound of "catch the thief".
IC6可采用LM386型音频功率放大集成电路。当工作电压为12V，扬声器阻抗为8Ω时，其输出功率≥1W。IC7可用普通LM7812型三端固定稳压集成块。 IC 6 can adopt LM386 type audio power amplifier integrated circuit. When the working voltage is 12V and the speaker impedance is 8Ω, its output power is ≥1W. IC 7 can be used as an ordinary LM7812 three-terminal fixed voltage regulator integrated block.
IC1的外接天线ANT可用金属导线弯制成直径为120毫米的圆状环即可。 The external antenna ANT of IC 1 can be made into a circular ring with a diameter of 120 mm by bending a metal wire.
探头和主机应分别装焊在两个体积合适的绝缘小盒里。探头安放在需要警戒的地方，主机可放在值班室或者人经常呆的地方，两者之间用双芯屏蔽线连接起来。 The probe and the host should be installed and welded in two small insulating boxes with appropriate volume. The probe is placed in the place that needs to be alerted, and the host can be placed in the duty room or a place where people often stay, and the two are connected with a double-core shielded wire.
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