CN102248930A

CN102248930A - Multifunctional anti-theft alarm device

Info

Publication number: CN102248930A
Application number: CN2010101771361A
Authority: CN
Inventors: 周建冰
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-18
Filing date: 2010-05-18
Publication date: 2011-11-23

Abstract

The invention provides a multifunctional anti-theft alarm device which comprises a mainframe and a plurality of external equipment which are connected with the mainframe via signal wires. The mainframe comprises a shell and a circuit board arranged in the shell, wherein, the circuit board of the mainframe comprises a terminal block part, a power source part, an alarm delay part, a relay part, a wireless encoding and transmission part and other parts, and the shell of the mainframe is equipped with a standby power supply as well as a power switch thereof, an alarm indicator lamp, a wireless alarm control switch, a signal wire interface and an external interface of an audible-visible alarm; and the external equipment comprises an ultrasonic displacement sensor part, a shock sensor part, a micro contact switch part, a power butt plug part, alarm equipment part and other parts, wherein, the alarm equipment part comprises an alarm horn, the audible-visible alarm, a double jump light of a car body, the original horn of the car body and a wireless receiving alarm. The multifunctional anti-theft alarm device further comprises a wireless encoding receiver which is in wireless connection with the mainframe. The multifunctional anti-theft alarm device has the advantages of realizing accurate alarm at the first time in case of damage on the external equipment or external circuits as well as double anti-theft functions of spot alarm and remote wireless alarm.

Description

Multifunctional anti-theft alarm device

Technical Field

The invention belongs to the field of electronic anti-theft alarm products, and relates to a multifunctional anti-theft alarm device.

Background

Along with the rapid development of market economy, the dependence degree of various industries on logistics is higher and higher, and the transportation market of various types of trucks is also larger and larger.

The price of fuel oil as the power core is high. At the same time, there is an increasing interest in theft partners for fuel and goods on freight vehicles. Drivers can get across these inroads when resting in the car, getting off the car for eating, and even when traffic jams on the way. In order to effectively avoid property loss, various anti-theft alarm devices mounted on vehicles are produced. However, the conventional similar products such as an anti-theft fuel tank cap, an anti-theft fuel tank lock, an anti-theft filter screen, a fuel tank liquid level alarm, an infrared detection alarm, an alarm after opening the fuel tank cap and the like are difficult to effectively play a role in anti-theft alarm in the actual use process of a driver.

Among the current freight train burglar alarm products in the market, the infrared detection alarm of Beijing Hongshou xingda scientific and trade center theoretically has the corresponding functions of alarming in the first time, preventing burglary and the like, but when the infrared detector adopted by the infrared detection alarm is used outdoors, more false alarms and alarm missing situations often exist. Because the working principle of the infrared detector is based on the constant body temperature of the human body, generally, the infrared detector can emit infrared rays with specific wavelength of about 10 micrometers at about 37 ℃, and the passive infrared detector works by detecting the infrared rays with the wavelength of about 10 micrometers emitted by the human body. Therefore, the device is easily interfered by various heat sources and sunlight sources; the passive infrared penetration force is poor, and the infrared radiation of a human body is easily shielded by thick clothes and is not easily received by a detector; susceptible to interference from radio frequency radiation; when the ambient temperature and the human body temperature are close, the detection and the sensitivity are obviously reduced, and short-time failure is sometimes caused. Further, the multifunctional radar burglar alarm disclosed in patent application No. 02214777 is limited to use in buildings, and the associated accessories are not suitable for installation in vehicles.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a novel multifunctional anti-theft alarm device for a truck. Aiming at various theft behaviors on the truck, the system can accurately alarm at the first time under the condition that external equipment or external lines are damaged, and can realize the dual anti-theft functions of on-site alarm and remote wireless alarm.

In order to achieve the purpose, the invention adopts the following technical scheme:

the multifunctional anti-theft alarm device is characterized by comprising a host and a plurality of external devices connected with the host through signal lines;

the host comprises a shell and a circuit board arranged in the shell of the host;

the host shell is respectively provided with a standby power supply, a power switch, an alarm indicator lamp, an alarm control wireless switch, at least one signal line interface and at least one audible and visual alarm external interface;

the host circuit board comprises a wiring terminal part A, a power supply part B, an alarm delay part C, a relay part D and a wireless code transmitting part E;

the external equipment comprises an ultrasonic displacement sensor part, a vibration sensor part, a micro-contact switch part, a power supply butt joint plug part and an alarm equipment part; wherein,

the ultrasonic displacement sensor part comprises a plurality of ultrasonic displacement sensors which are connected in series;

the vibration sensor part comprises a plurality of vibration sensors which are connected in series;

the micro-contact switch part comprises a plurality of micro-contact switches connected in series;

the power supply butt joint plug part comprises a plurality of power supply butt joint plugs connected in series;

the alarm device portion includes: the alarm comprises an alarm horn, an audible and visual alarm, a vehicle body double-jump lamp, a vehicle body original horn and a wireless receiving alarm;

the anti-theft alarm device also comprises a wireless code receiver which is in wireless connection with the host.

In the above multifunctional anti-theft alarm device, wherein,

the terminal part A of the host circuit board comprises a terminal J11; the 1 pin of the connecting terminal J11 is connected with 24V direct current voltage; pins 2 are grounded GND,

pins

3 and 4 are connected with a main power supply VCC and VCC1,

pins

5 and 6 are connected with input signal ports IN1 and IN2, pins 7 are connected with a standby power supply VCC2, pins 8 are connected with a load positive terminal VC, and pins 9 are connected with a load negative terminal VB.

The power supply part B of the host circuit board includes: the circuit comprises a switching voltage regulator IC2, a porcelain ring inductance coil L1, a diode D1, capacitors C1, C2 and C3, and resistors R1 and R10;

the direct current 24V voltage is filtered by a capacitor C1, input to a pin 1 of a switching voltage regulator IC2, output from a pin 2 of a switching voltage regulator IC2, and output to a circuit board by voltage stabilization of a diode D1, filtering of an inductor L1, a capacitor C2 and a capacitor C3, and stable 12V voltage is output.

The alarm delay part C of the host circuit board comprises: the circuit comprises a photoelectric coupler IC3, resistors R2, R3, R4, R5, R6, R7, R8 and R9, filter capacitors C4 and C5, a diode D2, triodes T1 and T2 and a delay chip IC 1;

the input signal is directly transmitted to pin 2 of a photoelectric coupler IC3, and is connected to the base of a triode T1 through resistors R4 and R5, one ends of resistors R2 and R3 are connected to pin 1 and pin 3 of a photoelectric coupler IC3, the other end of the resistors R2 and R3 is connected to a main power supply VCC1, current is provided for the photoelectric coupler IC3, and a time delay circuit is formed by the main power supply VCC1, the resistors R6 and R7, the triode T1, a capacitor C4 and a time delay chip IC 1; one end of the resistor R6 is connected with a main power supply VCC1, and the other end of the resistor R6 is connected with a pin 2 and a pin 6 of the delay chip IC1, a collector of the triode T1 and the anode of the capacitor C4; the delay signal is connected to the base of the triode T2 through a pin 3 of the delay chip IC1, a resistor R8 and a resistor R9 to drive the alarm to work.

The relay part D of the host circuit board includes: relays J1 and J2, diodes D3, D4 and D23, a triode T22 and

power output sockets

4 and 5;

a pin 1 of the relay J1 and the negative end of the diode D3 are connected with a main power supply VCC1, and a pin 2 and a pin 3 of the relay J1 and the positive end of the diode D3 are connected with GND; the 4 pin of the relay L1 is connected with a main power VCC 2; the pin 6 of the relay J1 is connected with the positive terminal of the diode D4; a pin 7 of the relay J1 and the negative end of the diode D4 are connected with a pin 8 of the connecting terminal;

a pin 1 of the relay J2 and the negative end of the diode D23 are connected with a pin 8 of a connecting terminal, a pin 2 of the relay J2 and the positive end of the diode D23 are connected with a collector of the triode T22, a pin 3 and a pin 4 of the relay J2 are connected with a pin 1 of the connecting terminal J11, an emitter of the triode T22 is connected with GND, and a base of the triode T22 is connected with a base of the triode T2; pin 7 of relay J2 is connected to pin 1 of power outlet socket 4, pin 8 of relay J2 is connected to pin 1 of power outlet socket 5, and pins 2 of

power outlet sockets

4 and 5 are connected to GND.

The wireless code transmitting part E comprises: the code dialing device comprises a dial switch DZM, an encoding chip IC8, a wireless encoding transmitting module FS, an antenna TX, resistors R22 and R23, a voltage stabilizing diode D22 and a self-locking switch S3;

one end of the resistor R23 is connected with the self-locking switch S3, and the other end is connected with the negative electrode of the voltage stabilizing diode D22, the pins 1 to 8 of the dial switch DZM, the pin 8 of the coding chip IC8 and the pin 1 of the wireless coding transmitting module FS; the anode of the voltage-stabilizing diode D22 is connected with the pin 9 and the pin 14 of the coding chip IC8 and the pin 3 of the wireless coding transmitting module FS; pins 9 to 16 of the dial switch DZM are respectively connected with pins 8 to 1 of the coding chip IC 8; the 15 and 16 pins of the coding chip IC8 are respectively connected with the two ends of a resistor R22, and the 17 pin is connected with the 2 pin of the wireless coding transmitting module FS; the 4-pin antenna TX of the wireless coding transmission module FS.

The wireless coding receiver comprises a shell and a circuit board arranged in the shell, and a power switch, a power indicator lamp and an audible and visual alarm horn are respectively arranged on the shell.

The circuit board of the wireless coding receiver comprises: the intelligent alarm comprises an 8-bit dial switch S2, an encoding chip IC2, a wireless encoding receiving module IC1, a receiving antenna, self-locking key switches S1 and S3, LED indicator lamps T2, T3 and T4, resistors R1, R3, R2, R4, R5 and R6, a one-way silicon controlled rectifier SCR, a triode Q3, a filter capacitor C1, a C2 voice chip IC3 and an alarm LS 1;

one end of the resistor R1 is connected with the anode of the LED indicator lamp T2, and the other end is connected with the self-locking key switch S3; the negative electrode of the LED indicator lamp T2 is connected with the other end of the self-locking key switch S3; one end of the resistor R3 is connected with the self-locking key switch S1, the anode of the unidirectional silicon controlled rectifier SCR and one end of the alarm LS 1; the other end is connected with the anode of an LED indicator lamp T4; the negative end of the LED indicator lamp T4 is connected with the public end; the other end of the self-locking key switch S1 is connected with 1 pin to 8 pins of capacitors C1, C2 and an 8-bit dial switch S2, 18 pins of a coding chip IC2 and 1 pin of a coding chip IC 1; pins 9 to 16 of the 8-bit dial switch S2 are respectively connected with pins 8 to 1 of the coding chip IC 2; the pin 9 of the code chip IC2 is connected with a public end; two ends of the resistor R2 are respectively connected with the pins 15 and 16 of the coding chip IC 2; a pin 17 of the coding chip IC2 is connected with one end of a resistor R4 and a control electrode of a unidirectional Silicon Controlled Rectifier (SCR); the other end of the resistor R4 is connected with the anode of the LED indicator lamp T3, and the cathode of the LED indicator lamp T3 is connected with the common end; the cathode of the unidirectional silicon controlled rectifier SCR is connected with the resistor R5 and the pin 1 of the voice chip IC3, and the other end of the resistor R5 is connected with the common end; the 3 pin of the voice chip IC3 is connected with one end of a resistor R6, the other end of the resistor R6 is connected with the base electrode of a triode Q3, and the 4 pin of the voice chip IC3 is connected with a common end; the collector of the triode Q3 is connected with the other end of the alarm LS1, and the emitter thereof is connected with the common end.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:

1. the invention overcomes the defects that the prior truck anti-theft alarm device only prevents theft and does not alarm, and the technical defects that the traditional object approach alarm is mostly manufactured by adopting a pyroelectric infrared principle, is easily influenced by environmental factors such as temperature, humidity and the like when being used outdoors, has unstable performance and the like, and uses different alarm devices according to the special structure of each part of the truck so as to achieve the aim of preventing theft of the required part.

2. Because the number of alarm devices equipped on the line is large, each alarm device is connected with the line and is designed as a docking plug, the alarm devices can be conveniently installed at the anti-theft positions according to actual needs in use and connected with the line, the line does not need to be changed during maintenance, and the devices can be directly replaced. Therefore, the anti-theft function of the product is improved, and the invention is more convenient in practical use.

3. The alarm of the invention has the advantages that the host machine is arranged in the cab, the vibration sensor is arranged on the inner side of the anti-theft lock of the oil tank, the surface of the oil tank cover, the surface of the door of the van, the surface of the lock and the valuable goods in the door inner side or open type carriage and the inner part of the package, and the alarm is more accurate because the anti-shearing function is very sensitive to the weak object surface vibration wave and cannot be influenced by external sound, and the anti-shearing function is realized on the circuit connected with the host machine. The ultrasonic displacement sensor shell adopts the waterproof box, so the ultrasonic displacement sensor shell can be randomly placed on the surface of a fixed object around an oil tank body, the bottom of a carriage above a tire, the surface of goods, the gap between the goods and the periphery of the outer side of a vehicle door. The detection range is more than or equal to 160 degrees of three-dimensional space, and the detection distance can be adjusted from 0m to 6m at will. The micro-contact switch is connected in a VCC circuit and is required to be installed at the tight combination part of the spare tire and the vehicle body, so that the switch is closed just by abutting against a contact arm rod with a roller after the spare tire is positioned, a strong magnet on the micro-contact switch is designed for facilitating the installation of different vehicle types and different vehicle body structures, when the spare tire is separated from the vehicle body, the contacts are immediately separated to form a main power VCC circuit, and a corresponding circuit for the relay J1 to switch on the working of the spare power supply is formed. The power supply butt-joint plug is used in a goods packaging belt, a bound rope and a padlock hole of a van door, penetrates through the power supply butt-joint plug or is connected into a net shape by using more power supply butt-joint plugs to cover the surface of goods, and once the goods are moved and the line is pulled and cut, the alarm principle is the same as that of a micro-contact switch.

4. The circuit connection of relay J1 can realize that relay J1 coil receives the protection of diode D3, when main power VCC or VCC1 outage in the circuit, directly switches on reserve power VCC2, makes warning loudspeaker and wireless transmitting circuit supply power, makes these two part circuit can continue to work.

5. The integral alarm working principle of the invention utilizes the combination of a plurality of effective anti-theft and alarm modes to ensure accurate and effective alarm in use.

6. All anti-theft devices are connected with lines by adopting butt joints, and the aim is to facilitate specific installation according to required anti-theft positions and quantity in actual use. The position which does not need to be used can be plugged by a corresponding butt joint, so that the use is convenient and the normal use of the system is not influenced.

7. The invention has two effective alarm functions of on-site alarm and wireless alarm. After the external equipment and the line are damaged, the device still has two functions.

Drawings

The objects, specific structural features and advantages of the present invention will be further understood from the following description of the embodiments taken in conjunction with the accompanying drawings. In the drawings, there is shown in the drawings,

FIG. 1 is a block diagram schematically showing the configuration of an external device of the alarm device of the present invention;

FIG. 2 is a schematic diagram of the connection of external equipment lines of the alarm device of the present invention;

FIG. 3 is a schematic diagram of the circuit board of the host computer according to the present invention;

FIG. 4 is a schematic circuit diagram of the circuit board of the wireless code receiver of FIG. 2;

fig. 5, 6 and 7 are schematic structural views of external devices respectively mounted on a spare tire, a rear wheel, a vehicle tail and the like;

FIG. 8 is a schematic view of the whole vehicle mounting structure of the external device of the alarm device of the present invention;

FIG. 9 is an enlarged schematic view of the wiring connection of the terminal portion of FIG. 3;

FIG. 10 is an enlarged schematic diagram of the power supply part of FIG. 3;

FIG. 11 is an enlarged schematic diagram of the alarm delay section of FIG. 3;

FIG. 12 is an enlarged schematic diagram of a portion of the wiring connections of the relay of FIG. 3;

fig. 13 is an enlarged schematic diagram of the line connection of the wireless code transmitting part in fig. 3.

In the figure, the position of the upper end of the main shaft,

1-a host; 1 a-signal line interface; 1 b-an external interface of the audible and visual alarm; 2-a signal line; 3-power supply butt plug; 4-a loudspeaker; 5-a junction box; 6-a vibration sensor; 7-ultrasonic displacement sensor; 8-a microswitch; 9-a (standby) power switch on the host enclosure; 10-external power plug; 11-audible and visual alarm; 12-signal indicator lights on the host; 13-wireless alarm control switch; 14-24v power switch; 15-a wireless code receiver; 16-an alarm horn on the receiver housing; 17-power supply and defence switch on the receiver shell; 18-signal indicator lights on the receiver housing.

Detailed Description

Referring to fig. 1 and 2, and fig. 3 and 4 in cooperation, the multifunctional anti-theft alarm device according to the present invention mainly comprises a host 1, a plurality of external devices connected to the host 1 through signal lines 2, and a wireless code receiver 15 wirelessly connected to the host 1.

As shown in fig. 1 and 2, the alarm device according to the present invention includes an external device connected to a host 1: the ultrasonic displacement sensor part, the vibration sensor part, the micro-contact switch part, the power supply butt joint plug part and the alarm device part are arranged on the base; wherein,

the ultrasonic displacement sensor part comprises a plurality of ultrasonic displacement sensors 7 which are connected in series;

the vibration sensor part comprises a plurality of vibration sensors 6 connected in series;

the micro-contact switch part comprises a plurality of micro-contact switches 8 which are connected in series;

the power supply butt joint plug part comprises a plurality of power supply butt joint plugs 3 connected in series;

the alarm device portion includes: the alarm comprises an alarm horn 4, an audible and visual alarm 11, a vehicle body double-jump lamp, a vehicle body original horn and a wireless receiving alarm 15;

the host 1 comprises a shell and a circuit board arranged in the shell of the host;

the shell of the host 1 is respectively provided with a standby power switch 9, a 24v power switch 14, a signal indicator lamp 12, a wireless alarm control switch 13, at least one signal wire connection 1a and at least one audible and visual alarm external connection 1 b; and the external power plug 10 is led out from the signal wire connection 1a on the host 1 through a signal wire.

In this embodiment, the signal indicator lamps 12 on the housing of the host 1 respectively include a.24v power indicator lamps; b. a standby power supply indicator light; c, an alarm indicator light; d. wireless alarm switch pilot lamp. Referring to fig. 3, 9-13, the host circuit board of the alarm device mainly comprises a wiring terminal a, a power supply part B, an alarm delay part C, a relay part D and a wireless code transmitting part E; wherein,

the terminal part a of the host circuit board includes a terminal J11; the 1 pin of the connecting terminal J11 is connected with 24V direct current voltage; pins 2 are grounded GND, pins 3 and 4 are connected with a main power supply VCC and VCC1, pins 5 and 6 are connected with input signal ends IN1 and IN2, pins 7 are connected with a standby power supply VCC2, pins 8 are connected with a load positive end VC, and pins 9 are connected with a load negative end VB.

The relay portion D of the host circuit board includes: relays J1 and J2, diodes D3, D4 and D23, a triode T22 and

power output sockets

4 and 5;

a pin 1 of the relay J1 and the negative end of the diode D3 are connected with a main power supply VCC1, and a pin 2 and a pin 3 of the relay J1 and the positive end of the diode D3 are connected with GND; the 4 pins of the relay J1 are connected with a main power supply VCC 2; the pin 6 of the relay J1 is connected with the positive terminal of the diode D4; a pin 7 of the relay J1 and the negative terminal of the diode D4 are connected with a pin 8 of the connection terminal J11;

a pin 1 of the relay J2 and the negative end of the diode D23 are connected with a pin 8 of the connecting terminal J11, a pin 2 of the relay J2 and the positive end of the diode D23 are connected with the collector of the triode T22, a pin 3 and a pin 4 of the relay J2 are connected with direct current voltage 24V, the emitter of the triode T22 is connected with GND, and the base of the triode T22 is connected with the base of the triode T2; pin 7 of the relay J2 is connected with pin 1 of the power output socket 4, pin 8 of the relay J2 is connected with pin 1 of the power output socket 5, and pins 2 of the

power output sockets

4 and 5 are connected with GND.

The wireless code transmitting part E includes: the code dialing device comprises a dial switch DZM, an encoding chip IC8, a wireless encoding transmitting module FS, an antenna TX, resistors R22 and R23, a voltage stabilizing diode D22 and a self-locking switch S3;

Referring to fig. 2, the wireless code receiver 15 related to the alarm device of the present invention mainly includes a housing and a circuit board disposed in the housing, and the housing is respectively provided with a power switch 17, a power indicator 18, and an audible and visual alarm speaker 16.

As shown in fig. 4, the circuit board of the wireless code receiver 15 includes: the intelligent alarm comprises an 8-bit dial switch S2, an encoding chip IC2, a wireless encoding receiving module IC1, a receiving antenna, self-locking key switches S1 and S3, LED indicator lamps T2, T3 and T4, resistors R1, R3, R2, R4, R5 and R6, a one-way silicon controlled rectifier SCR, a triode Q3, a filter capacitor C1, a C2 voice chip IC3 and an alarm LS 1;

fig. 8 is a schematic view of the whole vehicle mounting structure of the external device of the alarm device of the invention.

In actual installation and use, the junction box 5 can be used for realizing the connection of a plurality of signal wires 2. The host 1 can be placed in a cab, and the vibration sensor 6 is placed on the inner side of an oil tank anti-theft lock, the surface of an oil tank cover, the surface of a van door, the surface of a lock and the surface of valuable goods in a door inner side or an open type carriage and the inside of a package, so that the alarm is more accurate because the vibration sensor is very sensitive to weak object surface vibration waves and cannot be influenced by external sounds, and the anti-shearing function is realized on a circuit connected with the host 1. The outer shell of the ultrasonic displacement sensor 7 adopts a waterproof box, so that the ultrasonic displacement sensor can be randomly placed on the surface of a fixed object around an oil tank body, the bottom of a carriage above a tire, the surface of goods, a gap between the goods and the periphery of the outer side of a vehicle door. The detection range is more than or equal to 160 degrees of three-dimensional space, and the detection distance can be adjusted from 0m to 6m at will. The micro-contact switch 8 is connected in a main power VCC circuit and is required to be installed at the tight combination part of the spare tire and the vehicle body, so that the spare tire just props against a contact arm rod with a roller to close the switch after being positioned, a strong magnet on the micro-contact switch 8 is designed to facilitate the installation of different vehicle types and different vehicle body structures, when the spare tire is separated from the vehicle body, the contacts are immediately separated to form a circuit for disconnecting a power VCC circuit, and a relay J1 is enabled to conduct a corresponding circuit for operating the spare power VCC 2. The power supply butt-joint plug 10 is used in a goods packaging belt, a binding rope and a padlock hole of a van door, penetrates through the power supply butt-joint plug 10 or is connected into a net shape by using more power supply butt-joint plugs 10 to cover the surface of goods, and once the goods are moved and the line is pulled and cut, the alarm principle is the same as that of a micro-contact switch.

The circuit connection of relay J1 can realize that relay J1 coil receives the protection of diode D3, when main power VCC or VCC1 outage in the circuit, directly switches on standby power VCC2, makes warning loudspeaker 4 and wireless transmitting circuit supply power, makes these two part circuit can continue to work.

The working principle of the integral alarm of the invention mainly utilizes the combination of a plurality of effective anti-theft and alarm modes to ensure accurate and effective alarm in use. All anti-theft devices are connected with lines by adopting butt joints, and the aim is to facilitate specific installation according to required anti-theft positions and quantity in actual use. The position which does not need to be used can be plugged by a corresponding butt joint, so that the use is convenient and the normal use of the system is not influenced.

The invention has two effective alarm functions of on-site alarm and wireless alarm. After the external equipment and the line are damaged, the device still has two functions.

The wireless coding transmitting part and the receiving end of the invention, the coding chip IC2 and the coding chip IC8 are low-power consumption general coding and decoding chips manufactured by CMOS technology, arbitrary combination of 12-bit (A0-A11) tri-state address terminal pins (hanging, high level connection and low level connection) can provide 531441 groups of address codes, therefore, the similar alarms can not interfere with each other in practical use, and false alarm can be avoided. A pin 17 of the coding chip IC2 outputs a high-level signal to trigger a gate pole of the unidirectional silicon controlled rectifier SCR and then the cathode and the anode are conducted, an indicator lamp T4, a voice chip IC1 circuit and a loudspeaker which are connected with the cathode and the anode work simultaneously to send out an alarm signal, a switch S1 power supply must be manually turned off to disconnect the conduction of the unidirectional silicon controlled rectifier SCR and turn off the indicator lamp T3 alarm indicator lamp, and the loudspeaker is stopped to alarm. The function is designed for drivers to be influenced by environmental noise in public places and cannot find out alarm in time, and the functional defects of the conventional truck anti-theft alarm in the market are overcome.

When the low level signal output by the ultrasonic displacement sensor 7 or the high level signal output by the vibration sensor 6 triggers the delay line, the alarm device and the wireless coding transmitting line work simultaneously. If the circuit of the main power supply VCC and VCC1 is broken, the standby power supply VCC2 in the host 1 is immediately output by the normally closed 4 pin and 6 pin which are switched on after the power failure of the relay J1 on the circuit board, and is output by the diode D4, the load positive terminal VC directly supplies power to the alarm horn and the wireless coding transmitting circuit, and two effective alarm functions of wire and wireless can still be achieved.

Claims

1. The multifunctional anti-theft alarm device is characterized by comprising a host and a plurality of external devices connected with the host through signal lines;

the burglar alarm also comprises a wireless coding receiver in wireless connection with the host.

2. The multi-functional burglar alarm arrangement according to claim 1,

the terminal part A of the host circuit board comprises a terminal J11; the 1 pin of the connecting terminal J11 is connected with 24V direct current voltage; pins 2 are grounded GND, pins 3 and 4 are connected with a main power supply VCC and VCC1, pins 5 and 6 are connected with input signal ports IN1 and IN2, pins 7 are connected with a standby power supply VCC2, pins 8 are connected with a load positive terminal VC, and pins 9 are connected with a load negative terminal VB.

3. The multifunctional burglar alarm of claim 1 or 2, wherein the power supply part B of said main body circuit board comprises: the circuit comprises a switching voltage regulator IC2, a porcelain ring inductance coil L1, a diode D1, capacitors C1, C2 and C3, and resistors R1 and R10;

4. The multifunctional burglar alarm arrangement according to claim 1 or 2, wherein said alarm delay section C of said host circuit board comprises: the circuit comprises a photoelectric coupler IC3, resistors R2, R3, R4, R5, R6, R7, R8 and R9, filter capacitors C4 and C5, a diode D2, triodes T1 and T2 and a delay chip IC 1;

5. The multifunctional burglar alarm of claim 1 or 2, wherein the relay portion D of said main body circuit board comprises: relays J1 and J2, diodes D3, D4 and D23, a triode T22 and power output sockets 4 and 5;

a pin 1 of the relay J1 and the negative end of the diode D3 are connected with a main power supply VCC1, and a pin 2 and a pin 3 of the relay J1 and the positive end of the diode D3 are connected with GND; the 4 pins of the relay J1 are connected with a main power supply VCC 2; the pin 6 of the relay J1 is connected with the positive terminal of the diode D4; a pin 7 of the relay J1 and the negative end of the diode D4 are connected with a pin 8 of the connecting terminal;

a pin 1 of the relay J2 and the negative end of the diode D23 are connected with a pin 8 of a connecting terminal, a pin 2 of the relay J2 and the positive end of the diode D23 are connected with a collector of the triode T22, a pin 3 and a pin 4 of the relay J2 are connected with a pin 1 of the connecting terminal J11, an emitter of the triode T22 is connected with GND, and a base of the triode T22 is connected with a base of the triode T2; pin 7 of relay J2 is connected to pin 1 of power outlet socket 4, pin 8 of relay J2 is connected to pin 1 of power outlet socket 5, and pins 2 of power outlet sockets 4 and 5 are connected to GND.

6. Multifunctional burglar alarm arrangement according to claim 1 or 2,

7. The multi-functional burglar alarm arrangement according to claim 1,

8. The multi-functional burglar alarm arrangement according to claim 7, further comprising: