CN201285579Y

CN201285579Y - Anti-theft apparatus for welding device

Info

Publication number: CN201285579Y
Application number: CNU2008202003019U
Authority: CN
Inventors: 吴建鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-10
Filing date: 2008-09-10
Publication date: 2009-08-05
Anticipated expiration: 2018-09-10

Abstract

The utility model discloses an anti-theft device of welding equipment, which is characterized by being an alarm arranged in a case of the welding equipment. The alarm comprises a speaker, a switch circuit, a varying voltage rectification filtering circuit connected with a working power supply of the welding equipment and an alarm delay disconnecting control circuit, wherein the switch circuit consists of an omnidirectional high-sensitivity vibrating sensor, a relay, and a single phase controllable silicon, the switch circuit can be used for controlling the power supply of the speaker, the power supply of the speaker is a charging device which charges the varying voltage rectification filtering circuit, wherein the alarm delay disconnecting control circuit acts, the alarm circuit is switched off to stop the alarm so as to change into an awaiting alarm state. The alarm also comprises a code sending set circuit and a wireless electric decoding alarm receiver circuit, the power supply of the code sender circuit can be provided by the charging device and is controlled by the switch circuit. The utility model has the function of preventing thefts and burglary, and can realize the wireless alarm function.

Description

A kind of anti-theft device of welding gear

Technical field

The utility model relates to a kind of technology of anti-theft device of welding gear.

Background technology

The manufactured materials of welding gear-welding machine is noble metals such as copper and aluminium mostly at present, has therefore become the main stealing object of thief.Bring great economic loss to the user like this, influence people's production simultaneously.

Summary of the invention

The purpose of this utility model provides a kind of anti-theft device of welding gear, and the thief can make buzzing at once and report to the police, thereby reach antitheft thief-proof effect when mobile or vibration welding apparatus.

Further purpose is to realize the radio alarming function.

The purpose of this utility model is achieved through the following technical solutions.

A kind of anti-theft device of welding gear is characterized in that: described anti-theft device is the alarm that is installed in the welding gear shell.

Described alarm comprises that loudspeaker, on-off circuit, the transformation current rectifying and wave filtering circuit that is connected with the welding gear working power and the time-delay of reporting to the police disconnect control circuit, on-off circuit is by comprehensive high-sensitivity vibration sensor, relay and single-phase silicon-controlled the composition, on-off circuit can be used to the power supply of control loudspeaker, the power supply of loudspeaker is a rechargeable device, this charging device is charged by aforementioned transformation current rectifying and wave filtering circuit, the time-delay of wherein reporting to the police disconnects the control circuit action, and the warning circuit dead electricity stops to report to the police and becomes the wait alarm condition.

Described rechargeable device is a rechargeable battery set.

Described alarm also comprises a coded transmitter circuit and radio decoding warning receiver circuit, and the power supply of coded transmitter circuit is provided by rechargeable device and controlled by on-off circuit.

Described coded transmitter circuit comprises coding integrated circuit, radio transmitter integration module, delay control circuit, the coding integrated circuit produces various control signal pulse according to different address codes and numeric data code layout and sends into the radio transmitter integration module, amplifies the back is modulated by wireless encoding alerting signal from serial pulses to aerial radiation through its modulation; Radio decoding warning receiver circuit comprise with transmitter circuitry in the radio reception demodulation integration module that matches mutually of radio transmitter integration module, and a decoder ic and a Music Clip, loudspeaker, radio reception demodulation integration module receives the radio coding signal that transmitter is sent here, output square-wave signal after its inner high frequency amplifies the shaping processing, be added to decoder ic to detect through the shaping processing and amplifying again, judge its address code, output high level when the address code in address code and the transmitter is in full accord, connect the working power of Music Clip, output audio signal drives loudspeaker and sends music alarm sound.

Described radio transmitter integration module, the frequency of operation of its wireless transmit are 250-350MHz, and operating voltage is 6-9V, and working current is 8-15mA.

Described coded transmitter circuit is added with soft antenna outward.

Described radio reception demodulation integration module, operating voltage is 6V, static working current is 0.2mA.

The utility model compared with prior art has the following advantages.

The utility model is because anti-theft device is the alarm that is installed in the welding gear shell, particularly alarm comprises loudspeaker, on-off circuit, the transformation current rectifying and wave filtering circuit that is connected with the welding gear working power and the time-delay of reporting to the police disconnect control circuit, on-off circuit is by comprehensive high-sensitivity vibration sensor, relay and single-phase silicon-controlled composition, on-off circuit can be used to the power supply of control loudspeaker, move or during vibration welding apparatus as the thief like this, the built-in alarm of welding gear is just made buzzing and is reported to the police at once, just security personnel or other staff near can reminding have external force that welding gear is being moved, thereby reach antitheft thief-proof effect.

Again because alarm also comprises a coded transmitter circuit and radio decoding warning receiver circuit, the power supply of coded transmitter circuit is provided by rechargeable device and is controlled by on-off circuit, so just, can realize the radio alarming function, promptly move or during vibration welding apparatus as the thief, the built-in alarm of welding gear is when making buzzing and reporting to the police, coded transmitter sends signal, accept through warning receiver, receiver sends warning immediately with the prompting victim, thereby reaches the effect of theft protection.

Description of drawings

Fig. 1 contains the electrical schematic diagram of radiating circuit for the anti-theft device alarm of the utility model welding gear;

Fig. 2 is the anti-theft device alarm receiving circuit schematic diagram of the utility model welding gear.

Embodiment

Describe in further detail below in conjunction with the anti-theft device of accompanying drawing the utility model welding gear.

The anti-theft device of the utility model welding gear, for being installed in the alarm in the welding gear shell, alarm comprises loudspeaker, on-off circuit, the transformation current rectifying and wave filtering circuit that is connected with the welding gear working power and the time-delay of reporting to the police disconnect control circuit, on-off circuit is by comprehensive high-sensitivity vibration sensor, relay and single-phase silicon-controlled composition, on-off circuit can be used to the power supply of control loudspeaker, the power supply of loudspeaker is a rechargeable device, this charging device is charged by aforementioned transformation current rectifying and wave filtering circuit, the time-delay of wherein reporting to the police disconnects the control circuit action, the warning circuit dead electricity stops to report to the police and becomes the wait alarm condition, and rechargeable device is a rechargeable battery set.

Alarm also comprises a coded transmitter circuit and radio decoding warning receiver circuit, and the power supply of coded transmitter circuit is provided by rechargeable device and controlled by on-off circuit.Wherein the coded transmitter circuit comprises coding integrated circuit, radio transmitter integration module, delay control circuit, the coding integrated circuit produces various control signal pulse according to different address codes and numeric data code layout and sends into the radio transmitter integration module, amplifies the back is modulated by wireless encoding alerting signal from serial pulses to aerial radiation through its modulation; Radio decoding warning receiver circuit comprise with transmitter circuitry in the radio reception demodulation integration module that matches mutually of radio transmitter integration module, and a decoder ic and a Music Clip, loudspeaker, radio reception demodulation integration module receives the radio coding signal that transmitter is sent here, output square-wave signal after its inner high frequency amplifies the shaping processing, be added to decoder ic to detect through the shaping processing and amplifying again, judge its address code, output high level when the address code in address code and the transmitter is in full accord, connect the working power of Music Clip, output audio signal drives loudspeaker and sends music alarm sound.Radio transmitter integration module, the frequency of operation of its wireless transmit are 250-350MHz, and operating voltage is 6-9V, and working current is 8-15mA, and the coded transmitter circuit also is added with soft antenna outward.Radio reception demodulation integration module, operating voltage are 6V, and static working current is 0.2mA.

The circuit working principle is as follows

As Fig. 1, shown in Figure 2, T1, DR1, LM7812, the J1 composition reaches towards circuit battery, the welding machine operation detection, switch S 1, relay J 2 and VS form on-off circuit, be used for controlling the power supply of coded transmitter circuit and nearly control loudspeaker BL1, U2 (LM555), Q1, Q2, J3 forms the time-delay of reporting to the police and disconnects control circuit, U3 (VD5026) is the coding integrated circuit, according to different address codes and numeric data code layout (ground connection, just connect or unsettled), can produce nearly to 260,000 kinds of different control signals, U4 (FDD400) is a kind of mini radio emitting module, adopts single-row direct insertion pin, and number of pins is 7 pin, 1 pin is empty pin, 2,3 pin are L1, the external LC of L2 frequency-selective circuit in parallel, and reference carrier frequency is 250-350MHZ; 4,7 pin are power vd D, VSS, and positive and negative terminal, working power voltage are 6-9V, and corresponding working current is 8-15mA; 5 pin ANT are the emitting antenna external connection end, and the assembly emissive power is 45mW, and effectively remote control distance is 500 meters when not connecing antenna, and external 300mm can reach more than 800 meters during soft antenna, and 6 pin are the modulation signal input end.

The coded radio signal transmitter circuitry of alarm as shown in Figure 1.T1 welder working power, during welding machine energising work, T1 output 18V voltage is through DR1, after ripple is considered in the C1 rectification, export through U1 three terminal regulator voltage stabilizing 12V voltage, J1 gets electric work, the K1-1 normally closed contact disconnects, warning circuit is not done, the 12V power supply dashes to battery through D1 simultaneously, when the welding machine power cutoff quits work, the J1 relay is not worked, K1-1 normally closed contact closure, when the S1 alarm switch closes, circuit is in the wait alarm condition, S1 (TV-1) is a comprehensive high-sensitivity vibration sensor, and the disconnection of holding circuit when static state is when any direction generation is once vibrated, S1 with regard to conducting once, vibration stops, and S1 disconnects at once, and relay J 2 and single-phase silicon-controlled VS form switching power circuit, be used for controlling the power supply of warning and coded transmitter circuit, when the S1 conducting, the VS conducting that is triggered, relay J 2 adhesives, K2-2 normally opened contact closure, with the power supply self-locking, K2-1 normally opened contact closure, the BL1 loudspeaker is reported to the police, simultaneously coding transmit all electric work, the serial pulses of alarm address code represent in U3 the 17th pin output, and the wireless encoding alerting signal that modulated by serial pulses to aerial radiation after the FDD400 modulation is amplified is when U2 delay working after 15 seconds, 3 pin of U2 become low level by high level, Q1 is ended, Q2 work, relay J 3 adhesives, the K3-1 normally closed contact disconnects, the warning circuit dead electricity stops to report to the police (for waiting for alarm condition), when vibration S1 switch, repeats above work.

Fig. 2 is a radio decoding warning receiver circuit, U1 (JDD400) be one with transmitter circuitry in U4 (FDD400) the radio reception demodulation components of matching mutually, the frequency of operation that transmits and receives both is identical, and operating voltage is 6V, and static working current is 0.2mA.JDD400 also has and high receiving sensitivity need not external antenna, the promptly exportable square wave digital signal that is about 50mV, and have the signal to noise ratio (S/N ratio) of 10dB, 2 pin of JDD400 are the restituted signal output terminal, 4,1 pin is VDD, and VSS is the positive and negative end of power supply, and working power is 6-9V, 3 pin CS have pull-up resistor in the sheet choosing end, when CS=1, chip is promptly worked by gating, and 5,6 pin L1, L2 are the tuning frequency-selecting element of external LC, connect frequency in order to decision, receive frequency is consistent with transmission frequency; U2 (CD4069) is a shaping amplification circuit, the square-wave signal of exportable 5V, U3 (VD5027) is a decoder ic, address code in its address code and the transmitter is in full accord, because of this coding and decoding circuit can be combined into 260,000 kinds of different passwords, accomplish not disturb mutually, U4 (VT665) is a kind of Music Clip, wherein 1,2 pin are signal output part, 3 pin are power cathode, and 4 pin (top heat radiator) are positive source, and operating voltage is 1.5V-3.5V, quiescent current is less than 1UA, output current is greater than 12mA, and every energising is once just played the internal memory melody one time, automatically quit work after having played a song, circuit enters static state.

Behind closed receiving circuit S1 switch, circuit supply, when U1 (JDD400) does not receive the radio coding signal that transmitter sends here, its 2 pin no signal output, U2 (CD4069), U3 (VD5027), U4 (VT665) does not work, entire circuit is in holding state, in case JDD400 receives the radio coding signal that transmitter is sent here, after its inner high frequency amplifies the shaping processing, its 2 pin is just exported the negative pulse square-wave signal of 50mV, this signal is again through not gate 1, door 3 amplifies the positive pulse square-wave signal that 3V is promptly exported in shaping, be added among the VD5027 by R4 and decipher, when when the inner detection of VD5027 judges that its address code is identical three times, the 17th pin output high level, Q1 conducting this moment, the working power of connection VT665, it is 1 years old, 2 pin output audio signals drive loudspeaker BL1 and send loud music alarm sound, remind your welding machine may be stolen or have the people to rock.Music alarm sound is to send along with coded signal that transmitter gives off, so when transmitter stopped transmit coded signals, chimes of doom also stopped thereupon, emission is again reported to the police again, thereby finishes the antitheft task of welding machine.

Claims

1, a kind of anti-theft device of welding gear is characterized in that: described anti-theft device is the alarm that is installed in the welding gear shell.

2, anti-theft device according to the described welding gear of claim 1, it is characterized in that: described alarm comprises loudspeaker, on-off circuit, the transformation current rectifying and wave filtering circuit that is connected with the welding machine working power and the time-delay of reporting to the police disconnect control circuit, on-off circuit is by comprehensive high-sensitivity vibration sensor, relay and single-phase silicon-controlled composition, on-off circuit can be used to the power supply of control loudspeaker, the power supply of loudspeaker is a rechargeable device, this charging device is charged by aforementioned transformation current rectifying and wave filtering circuit, the time-delay of wherein reporting to the police disconnects the control circuit action, and the warning circuit dead electricity stops to report to the police and becomes the wait alarm condition.

3. the anti-theft device of welding gear according to claim 2, it is characterized in that: described rechargeable device is a rechargeable battery set.

4. according to the anti-theft device of claim 2 or 3 described welding gears, it is characterized in that: described alarm also comprises a coded transmitter circuit and radio decoding warning receiver circuit, and the power supply of coded transmitter circuit is provided by rechargeable device and controlled by on-off circuit.

5. the anti-theft device of welding gear according to claim 4, it is characterized in that: described coded transmitter circuit comprises coding integrated circuit, radio transmitter integration module, delay control circuit, the coding integrated circuit produces various control signal pulse according to different address codes and numeric data code layout and sends into the radio transmitter integration module, amplifies the back is modulated by wireless encoding alerting signal from serial pulses to aerial radiation through its modulation; Radio decoding warning receiver circuit comprise with transmitter circuitry in the radio reception demodulation integration module that matches mutually of radio transmitter integration module, and a decoder ic and a Music Clip, loudspeaker, radio reception demodulation integration module receives the radio coding signal that transmitter is sent here, output square-wave signal after its inner high frequency amplifies the shaping processing, be added to decoder ic to detect through the shaping processing and amplifying again, judge its address code, output high level when the address code in address code and the transmitter is in full accord, connect the working power of Music Clip, output audio signal drives loudspeaker and sends music alarm sound.

6. the anti-theft device of welding gear according to claim 5, it is characterized in that: described radio transmitter integration module, the frequency of operation of its wireless transmit are 250-350MHz, and operating voltage is 6-9V, and working current is 8-15mA.

7. the anti-theft device of welding gear according to claim 5, it is characterized in that: described coded transmitter circuit is added with soft antenna outward.

8. the anti-theft device of welding gear according to claim 5 is characterized in that: described radio reception demodulation integration module, and operating voltage is 6V, static working current is 0.2mA.