CN201910112U - Anti-theft device for circuits and motor equipments - Google Patents
Anti-theft device for circuits and motor equipments Download PDFInfo
- Publication number
- CN201910112U CN201910112U CN201020649910XU CN201020649910U CN201910112U CN 201910112 U CN201910112 U CN 201910112U CN 201020649910X U CN201020649910X U CN 201020649910XU CN 201020649910 U CN201020649910 U CN 201020649910U CN 201910112 U CN201910112 U CN 201910112U
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- circuit
- power
- signal sampling
- motor device
- acousto
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Abstract
The utility model provides an anti-theft device for circuits and motor equipments, belonging to the technical field of electric apparatus products. The anti-theft device mainly comprises a power circuit, a sound-light circuit, and a signal sampling circuit, wherein the power circuit provides the 12V power supply for the sound-light circuit and the signal sampling circuit and leads a direct-current cathode (3) to be grounded; a positive terminal of the sound-light circuit is connected with the anode of the 12V power supply; the negative terminal of the sound-light circuit passes through a normally-opened contact of the direct-current relay (K) and a reset switch (S3) and then is grounded; and the signal sampling circuit consists of a triode (V), an upper bias resistor (R3), a testing switch (S2) and an external terminal (4). The anti-theft device is applicable to giving an alarm when cable lines and the motor equipments are damaged, and can realize theft protection on circuits and equipments that are started and stopped intermittently.
Description
Technical field
The utility model is a kind of circuit and motor device alarm, is applicable to that cable line and motor device send warning when taking place to destroy, and belong to the electric equipment products technical field.
Background technology
For some cable lines and the motor device in field, because the unattended target that easily becomes theft that reaches is hard to guard against.And the circuit alarm on the existing market mainly is charged antitheft or have a power failure antitheftly, can not effectively protect in the line facility of intermittent start and stop.
The utility model content
Technical problem to be solved in the utility model is: provide a kind of and can realize antitheft circuit and motor device alarm on the circuit of intermittent start and stop and equipment.
The technical scheme that the utility model is dealt with problems is: a kind of circuit and motor device alarm, mainly form by power circuit, acousto-optic circuit, signal sampling circuit circuit; Power circuit is made up of power transformer T, power switch S1, rectifier bridge heap UR and filter capacitor C, and power circuit provides 12V power supply for acousto-optic circuit, signal sampling circuit circuit, and direct current negative pole 3 ground connection; Above-mentioned acousto-optic circuit is made up of DC relay K, light emitting diode VL2, current-limiting resistance R2 and hummer H; The coil two ends of DC relay K fly-wheel diode VD in parallel wherein, light emitting diode VL2 and current-limiting resistance R2 composition light-emitting caution loop; DC relay K, light-emitting caution loop and hummer H three are in parallel, its positive termination 12V positive source, and negative terminal is through normally opened contact, the reset switch S3 ground connection of DC relay K; Above-mentioned signal sampling circuit is made up of triode transistor V, upper offset resistance R 3, test switch S2, outside line binding post 4; The c utmost point of triode transistor V connects the negative terminal of acousto-optic circuit, and the b utmost point of triode transistor V connects outside line binding post 4 through test switch S2, outside line binding post 4 external circuits or motor device earth point; The b utmost point of described triode transistor V is by upper offset resistance R 3, from the 12V power supply through obtaining bias voltage.
Further, also be parallel with the power work indication loop of being formed by light emitting diode VL1, current-limiting resistance R1 between the 12V output terminal of above-mentioned power circuit and the ground.
Further, above-mentioned test switch S2 with meet the protective tube FU that can also connect between the outside line binding post 4.
The utility model outside line binding post 4 external circuits or motor device earth point, at electronegative potential, triode transistor ends the b utmost point clamper of triode transistor V, and alarm is in holding state; Stolen or when pressing test switch S2 when circuit and motor device, triode transistor b pin noble potential, when signal sampling circuit obtains trigger pip, the triode transistor conducting, acousto-optic circuit is carried out and is reported to the police.The utility model is the direct current minus earth rectifier UR, and the external motor device earthing of casing point of the b pin of transistor V when normally protecting, makes the b pin electronegative potential of transistor V, and transistor V ends, and relay K is not worked, and luminotron VL2 and buzzer H do not work; When cable is cut or motor device is liftoff and during loose contact, the b pin current potential of transistor V raises, and makes transistor V conducting, relay K energising and self-locking, luminotron VL2 is luminous, and hummer H rings, and reports to the police.
The utility model direct current negative terminal 3 ground connection, and outer motor device wants ground connection good, and ground connection is bad, line is disconnected, short circuit all has alarm, is provided with test switch 2, helps judging the alarm duty.
The utility model also is provided with short-circuit protection, protective tube FU fusing when control line and other line short circuit, and alarm will be triggered and report to the police.
The utility model is simple, and cost is low, and is safe and practical, can satisfy 10KM antitheft with interior circuit and motor device.When circuit and motor destruction, in time find to avoid loss.The utility model is a principle of utilizing the motor device earthing of casing, and when liftoff or cable is cut off when motor device, alarm will be triggered and report to the police.
Description of drawings
Fig. 1 is the utility model circuit diagram.
Embodiment
With reference to the accompanying drawings 1, a kind of circuit and motor device alarm mainly are made up of power circuit, acousto-optic circuit, signal sampling circuit, and when signal sampling circuit obtained trigger pip, acousto-optic circuit was carried out and reported to the police.Power circuit is made up of power transformer T, power switch S1, rectifier bridge heap UR, filter capacitor C, light emitting diode VL1 and current-limiting resistance R1,1,2 binding posts connect the 220V interchange, output 12V direct current, for circuit such as acousto-optic circuit, signal sampling circuit provide 12V power supply, and direct current negative terminal 3 ground connection.Acousto-optic circuit is made up of DC relay K, light emitting diode VL2, hummer H, current-limiting resistance R2, reset switch S 3, DC relay K adhesive and self-locking during execution, light emitting diode VL2, hummer H get the electric sound and light alarm that sends, and reset switch S 3 is used for cancellation and reports to the police.Signal sampling circuit is made up of triode transistor V, upper offset resistance R 3, test switch S2, outside line binding post 4, outside line binding post 4 external motor device earth points, at electronegative potential, triode transistor V ends the b pin clamper of triode transistor V, and alarm is in holding state; Stolen or when pressing test switch S2 when circuit and motor device, the b pin noble potential of triode transistor V, triode transistor V conducting drives acousto-optic circuit.
Claims (3)
1. circuit and motor device alarm mainly are made up of power circuit, acousto-optic circuit, signal sampling circuit; Power circuit is made up of power transformer (T), power switch (S1), rectifier bridge heap (UR) and filter capacitor (C); It is characterized in that: power circuit provides 12V power supply for acousto-optic circuit, signal sampling circuit, and direct current negative pole (3) ground connection; Above-mentioned acousto-optic circuit is made up of DC relay (K), light emitting diode (VL2), current-limiting resistance (R2) and hummer (H); The coil two ends of DC relay (K) fly-wheel diode (VD) in parallel wherein, light emitting diode (VL2) is formed the light-emitting caution loop with current-limiting resistance (R2); DC relay (K), light-emitting caution loop and hummer (H) three are in parallel, its positive termination 12V positive source, and negative terminal is through normally opened contact, reset switch (S3) ground connection of DC relay (K); Above-mentioned signal sampling circuit is made up of triode transistor (V), upper offset resistance (R3), test switch (S2), outside line binding post (4); The c utmost point of triode transistor (V) connects the negative terminal of acousto-optic circuit, and the b utmost point of triode transistor (V) connects outside line binding post (4) through test switch (S2), outside line binding post (4) external circuit or motor device earth point; The b utmost point of described triode transistor (V) connects the 12V power supply by upper offset resistance (R3).
2. circuit according to claim 1 and motor device alarm; It is characterized in that: also be parallel with the power work indication loop of being formed by light emitting diode (VL1), current-limiting resistance (R1) between the 12V output terminal of described power circuit and the ground.
3. circuit according to claim 1 and motor device alarm; It is characterized in that: described test switch (S2) with connect the protective tube (FU) of can also connecting between the outside line binding post (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020649910XU CN201910112U (en) | 2010-12-02 | 2010-12-02 | Anti-theft device for circuits and motor equipments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020649910XU CN201910112U (en) | 2010-12-02 | 2010-12-02 | Anti-theft device for circuits and motor equipments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910112U true CN201910112U (en) | 2011-07-27 |
Family
ID=44302312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020649910XU Expired - Fee Related CN201910112U (en) | 2010-12-02 | 2010-12-02 | Anti-theft device for circuits and motor equipments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201910112U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594796A (en) * | 2016-12-01 | 2017-04-26 | 王延睿 | Industrial boiler timing electronic ignition device and method thereof |
-
2010
- 2010-12-02 CN CN201020649910XU patent/CN201910112U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594796A (en) * | 2016-12-01 | 2017-04-26 | 王延睿 | Industrial boiler timing electronic ignition device and method thereof |
| CN106594796B (en) * | 2016-12-01 | 2019-07-19 | 傅晓强 | A kind of Industrial Boiler timing electronic ignition device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20111202 |