CN216424344U - OBD burglar alarm with good anti-theft effect - Google Patents

Abstract

The utility model discloses an effectual OBD alarm prevents burglary, it includes theftproof module and OBD interface, the theftproof module includes: delay trigger element, oscillation unit, transistor switch unit, warning sound production unit, drive unit and light signal production unit, delay trigger element with drive unit reaches the oscillation unit electricity is connected, oscillation unit with transistor switch unit electricity is connected, transistor switch unit with warning sound production unit reaches OBD interface electricity is connected, drive unit with light signal production unit electricity is connected, light signal production unit with OBD interface electricity is connected. The utility model has the advantages of high safety, good anti-theft effect and convenient use.

Description

OBD burglar alarm with good anti-theft effect

Technical Field

The utility model relates to an auto-parts technical field, in particular to effectual OBD alarm prevents burglary.

Background

The improvement is opened, the vehicle production technology of China is rapidly advanced, the quality of vehicles of joint-investment brands is good, the sales volume is high, the vehicles of independent brands are rapidly advanced in technology and quality, the vehicles of independent brands are gradually accepted by consumers, and the sales volume is obviously increased. With the development of economic globalization, vehicles are more and more popular, and the technology in the aspects of safety, convenience and comfort is more and more rapidly updated. Vehicles in the prior art are generally provided with anti-theft devices, an existing anti-theft host needs to be connected with a large number of wires of an original vehicle, such as 12V power supplies, grounds, doors, brakes, ACCs, loudspeakers, hazard lamps and the like, the connection needs to destroy wiring harnesses of the original vehicle, the installation is difficult, and professional installation personnel are needed; in addition, broken lines can affect the safety performance of the original vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem be, provide an effectual OBD alarm of theftproof convenient to installation.

In order to solve the technical problem, the utility model discloses an effectual OBD alarm of theftproof, it includes anti-theft module and OBD interface, anti-theft module includes: delay trigger element, oscillation unit, transistor switch unit, warning sound production unit, drive unit and light signal production unit, delay trigger element with drive unit reaches the oscillation unit electricity is connected, oscillation unit with transistor switch unit electricity is connected, transistor switch unit with warning sound production unit reaches OBD interface electricity is connected, drive unit with light signal production unit electricity is connected, light signal production unit with OBD interface electricity is connected.

In one embodiment, the delay triggering unit includes a first trigger switch, a first resistor, a second resistor, a first capacitor, and a first nand gate chip, a first end of the first trigger switch is electrically connected to a first pin and a second pin of the first nand gate chip, and a second end of the first trigger switch is grounded; the first end of the first resistor is electrically connected with the OBD interface, the second end of the first resistor is electrically connected with the first end of the second resistor, and the second end of the second resistor is grounded; the first end of the first capacitor is electrically connected with the second pin of the first NAND gate chip, the second end of the first capacitor is grounded, and the sixth pin and the tenth pin of the first NAND gate chip are electrically connected with the oscillation unit.

In one embodiment, the delay triggering unit further includes a potentiometer, a first end of the potentiometer is electrically connected to a second end of the first resistor, a second end of the potentiometer is electrically connected to a first end of the second resistor, and the first resistor is electrically connected to the second resistor through the potentiometer.

In one embodiment, the delay triggering unit further includes a first diode and a second trigger switch, an anode of the first diode is electrically connected to the fourth pin of the first nand gate chip, a cathode of the first diode is electrically connected to a first end of the second trigger switch, and a second end of the second trigger switch is grounded.

In one embodiment, the delay trigger unit further includes a second diode, a third resistor, a fourth resistor, and a second capacitor, an anode of the second diode is electrically connected to a first end of the third resistor, and a cathode of the second diode is electrically connected to a third pin of the first nand gate chip; the second end of third resistance with the OBD interface electricity is connected, the first end of fourth resistance with the second end electricity of third resistance is connected, the second end of fourth resistance with the first end electricity of second electric capacity is connected, the first end of second electric capacity with the eighth foot electricity of first NAND gate chip is connected, the second end ground connection of second electric capacity.

In one embodiment, the oscillation unit includes a first 555 chip, a third capacitor, a fifth resistor and a sixth resistor, a first pin of the first 555 chip is grounded, a second pin of the first 555 chip is electrically connected with a first end of the third capacitor, a third pin of the first 555 chip is electrically connected with the transistor switch unit, and a fourth pin of the first 555 chip is electrically connected with a tenth pin of the first nand gate chip; the first end of the third capacitor is electrically connected with the first end of the fifth resistor, and the second end of the third capacitor is grounded; the second end of the fifth resistor is electrically connected with the first end of the sixth resistor, the first end of the sixth resistor is connected with the seventh pin of the first 555 chip, and the second end of the sixth resistor is electrically connected with the OBD interface.

In one embodiment, the oscillation unit further includes a second 555 chip, a fourth capacitor, a seventh resistor, an eighth resistor, a ninth resistor, and a first triode, a first pin of the second 555 chip is grounded, a second pin of the second 555 chip is electrically connected to a first end of the fourth capacitor, and a fourth pin of the second 555 chip is electrically connected to the driving unit; a first end of the fourth capacitor is electrically connected with a first end of the seventh resistor, and a second end of the fourth capacitor is grounded; a second end of the seventh resistor is electrically connected with a first end of the eighth resistor, a first end of the eighth resistor is connected with a seventh pin of the second 555 chip, and a second end of the eighth resistor is electrically connected with the OBD interface; a first end of the ninth resistor is electrically connected with the OBD interface, and a second end of the ninth resistor is electrically connected with a collector electrode of the first triode; the base electrode of the first triode is electrically connected with the first end of the fourth capacitor, the collector electrode of the first triode is electrically connected with the fifth pin of the first 555 chip, and the emitting electrode of the first triode is grounded.

In one embodiment, the transistor switch unit includes a second triode, a third triode and a tenth resistor, a base of the second triode is electrically connected to a first end of the tenth resistor, a second end of the tenth resistor is electrically connected to a third pin of the first 555 chip, a collector of the second triode is electrically connected to the OBD interface and a collector of the third triode, an emitter of the second triode is electrically connected to a base of the third triode, and an emitter of the third triode is electrically connected to the warning sound generation unit.

In one embodiment, the driving unit includes a second nand gate chip, a fourth triode, a fifth triode, a sixth triode, a seventh triode, an eleventh resistor and a twelfth resistor, a first pin of the second nand gate chip is electrically connected with an eleventh pin of the first nand gate chip, and a fourteenth pin of the second nand gate chip is electrically connected with a fourteenth pin of the first nand gate chip;

a base electrode of the fourth triode is electrically connected with a first end of the eleventh resistor, a second end of the eleventh resistor is electrically connected with an eleventh pin of the second nand gate chip, a collector electrode of the fourth triode is electrically connected with a collector electrode of the fifth triode and the optical signal generating unit, an emitter electrode of the fourth triode is electrically connected with a base electrode of the fifth triode, and an emitter electrode of the fifth triode is grounded;

the base electrode of the sixth triode is electrically connected with the first end of the twelfth resistor, the second end of the twelfth resistor is electrically connected with the sixth pin of the second NAND gate chip, the collector electrode of the sixth triode is electrically connected with the collector electrode of the seventh triode and the optical signal generating unit, the emitter electrode of the sixth triode is electrically connected with the base electrode of the seventh triode, and the emitter electrode of the seventh triode is grounded.

The utility model has the advantages that: firstly, during installation, only the OBD interface is required to be connected with the OBD interface of the vehicle, the installation is simple and the connection is reliable, and because the wiring harness of the original vehicle is not required to be damaged and the original data of the original vehicle is utilized, the installation is more stable and the safety is improved; secondly, through the cooperation between the delay trigger unit, the oscillation unit, the transistor switch unit, the warning sound generation unit, the driving unit and the optical signal generation unit, when a thief touches the delay trigger unit, the warning sound generation unit does not immediately generate warning sound, and the warning sound is sent out after the short preset time delay, so that sudden attack occurs to break through the psychological defense line of the thief, the thief can be well repelled, and the anti-theft effect is good.

Drawings

Fig. 1 is a schematic block diagram of a preferred embodiment of the OBD burglar alarm with a good anti-theft effect according to the present invention;

fig. 2 is a circuit diagram of the anti-theft module of the OBD burglar alarm with good anti-theft effect shown in fig. 1.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples. It should be noted that, if there is no conflict, the embodiments and various features in the embodiments of the present invention may be combined with each other, and all are within the scope of the present invention.

Please refer to fig. 1 and fig. 2, the utility model provides an effectual OBD alarm of theftproof, it includes on-vehicle automatic diagnosis module 1, anti-theft module 2 and OBD interface 3, on-vehicle automatic diagnosis module 1 is connected with OBD interface 3 electricity, because on-vehicle automatic diagnosis module 1 is prior art, no longer gives details here. The antitheft module 2 comprises: delay trigger unit 21, oscillation unit 22, transistor switch unit 23, warning sound production unit 24, drive unit 25 and light signal production unit 26, delay trigger unit 21 with drive unit 25 reaches oscillation unit 22 electricity is connected, oscillation unit 22 with transistor switch unit 23 electricity is connected, transistor switch unit 23 with warning sound production unit 24 reaches OBD interface 3 electricity is connected, drive unit 25 with light signal production unit 26 electricity is connected, light signal production unit 26 with OBD interface 3 electricity is connected. It is understood that, in the OBD burglar alarm, OBD is an abbreviation of On-Board Diagnostics, i.e. an On-Board automatic diagnostic system.

The delay trigger unit 21 includes a first trigger switch K1, a first resistor R1, a second resistor R2, a first capacitor C1 and a first nand gate chip U1, wherein a first end of the first trigger switch K1 is electrically connected to a first pin and a second pin of the first nand gate chip U1, and a second end of the first trigger switch K1 is grounded. The first end of the first resistor R1 is electrically connected with the OBD interface 3, and specifically, the first end of the first resistor R1 is electrically connected with a power pin of the OBD interface 3.

The second end of the first resistor R1 is electrically connected with the first end of the second resistor R2, and the second end of the second resistor R2 is grounded. The first end of the first capacitor C1 is electrically connected to the second pin of the first nand gate chip U1, the second end of the first capacitor C1 is grounded, and the sixth pin and the tenth pin of the first nand gate chip U1 are electrically connected to the oscillation unit 22. In this embodiment, the first trigger switch K1 is a normally closed switch, when a theft occurs, the first trigger switch K1 is turned on, and after a delay of 30 seconds, the warning sound generating unit 24 sends out a warning sound to alarm. The first trigger switch K1 may be provided at the housing of the alarm, preferably in an area that is easily accessible to a person. Of course, the position thereof is not particularly limited herein.

The delay trigger unit 21 further includes a potentiometer P, a first end of the potentiometer P is electrically connected to the second end of the first resistor R1, a second end of the potentiometer P is electrically connected to the first end of the second resistor R2, and the first resistor R1 is electrically connected to the second resistor R2 through the potentiometer P. By adjusting the potentiometer P, the time for delaying alarm can be adjusted, so that the time can be adjusted according to the requirements of users, the use by the users is convenient, and the requirements of different users are met.

The delay triggering unit 21 further includes a first diode D1 and a second trigger switch K2, an anode of the first diode D1 is electrically connected to the fourth pin of the first nand gate chip U1, a cathode of the first diode D1 is electrically connected to a first end of the second trigger switch K2, and a second end of the second trigger switch K2 is grounded. In this embodiment, the second trigger switch K2 is a normally open switch, and when the second trigger switch K2 is closed due to theft, the alarm sound generating unit 24 immediately sends out an alarm sound to give an alarm. The second trigger switch K2 can be disposed at the housing of the OBD interface 3, that is, when a thief takes out the OBD interface 3, etc., an alarm is given immediately, thereby further improving the security.

The delay trigger unit 21 further includes a second diode D2, a third resistor R3, a fourth resistor R4, and a second capacitor C2, an anode of the second diode D2 is electrically connected to a first end of the third resistor R3, and a cathode of the second diode D2 is electrically connected to a third pin of the first nand gate chip U1. The second end of the third resistor R3 is electrically connected to the OBD interface 3, the first end of the fourth resistor R4 is electrically connected to the second end of the third resistor R3, the second end of the fourth resistor R4 is electrically connected to the first end of the second capacitor C2, the first end of the second capacitor C2 is electrically connected to the eighth pin of the first nand gate chip U1, and the second end of the second capacitor C2 is grounded. Specifically, a second end of the third resistor R3 is electrically connected to a power pin of the OBD interface 3.

The oscillating unit 22 includes a first 555 chip U2, a third capacitor C3, a fifth resistor R5 and a sixth resistor R6, a first pin of the first 555 chip U2 is grounded, a second pin of the first 555 chip U2 is electrically connected to a first end of the third capacitor C3, a third pin of the first 555 chip U2 is electrically connected to the transistor switch unit 23, and a fourth pin of the first 555 chip U2 is electrically connected to a tenth pin of the first nand gate chip U1. The first end of the third capacitor C3 is electrically connected with the first end of the fifth resistor R5, and the second end of the third capacitor C3 is grounded. The second end of the fifth resistor R5 is electrically connected with the first end of the sixth resistor R6, the first end of the sixth resistor R6 is connected with the seventh pin of the first 555 chip U2, and the second end of the sixth resistor R6 is electrically connected with the power pin of the OBD interface 3.

The oscillating unit 22 further includes a second 555 chip U3, a fourth capacitor C4, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, and a first triode Q1, wherein a first pin of the second 555 chip U3 is grounded, a second pin of the second 555 chip U3 is electrically connected to a first end of the fourth capacitor C4, and a fourth pin of the second 555 chip U3 is electrically connected to the driving unit 25. The first end of the fourth capacitor C4 is electrically connected with the first end of the seventh resistor R7, and the second end of the fourth capacitor C4 is grounded. The second end of the seventh resistor R7 is electrically connected to the first end of the eighth resistor R8, the first end of the eighth resistor R8 is connected to the seventh pin of the second 555 chip U3, and the second end of the eighth resistor R8 is electrically connected to the power pin of the OBD interface 3. The first end of the ninth resistor R9 is electrically connected with the power pin of the OBD interface 3, and the second end of the ninth resistor R9 is electrically connected with the collector of the first triode Q1. The base electrode of the first triode Q1 is electrically connected with the first end of the fourth capacitor C4, the collector electrode of the first triode Q1 is electrically connected with the fifth pin of the first 555 chip U2, and the emitter electrode of the first triode Q1 is grounded. Through the cooperation between the first 555 chip U2 and the second 555 chip U3, the effect of acousto-optic alarm coordination is realized.

The transistor switch unit 23 includes a second triode Q2, a third triode Q3 and a tenth resistor R10, the base of the second triode Q2 is electrically connected with the first end of the tenth resistor R10, the second end of the tenth resistor R10 is electrically connected with the third pin of the first 555 chip U2, the collector of the second triode Q2 is electrically connected with the power pin of the OBD interface 3 and the collector of the third triode Q3, the emitter of the second triode Q2 is electrically connected with the base of the third triode Q3, and the emitter of the third triode Q3 is electrically connected with the warning sound generation unit 24. When the theft happens to alarm, the first 555 chip U2 drives the second triode Q2 and the third triode Q3 to be turned on, so that the warning sound generating unit 24 makes a sound. In the present embodiment, the warning sound generating unit 24 is a speaker.

The driving unit 25 includes a second nand chip U4, a fourth transistor Q4, a fifth transistor Q5, a sixth transistor Q6, a seventh transistor Q7, an eleventh resistor R11, and a twelfth resistor R12, wherein a first pin of the second nand chip U4 is electrically connected to an eleventh pin of the first nand chip U1, and a fourteenth pin of the second nand chip U4 is electrically connected to a fourteenth pin of the first nand chip U1.

A base of the fourth transistor Q4 is electrically connected to a first end of the eleventh resistor R11, a second end of the eleventh resistor R11 is electrically connected to an eleventh pin of the second nand gate chip U4, a collector of the fourth transistor Q4 is electrically connected to a collector of the fifth transistor Q5 and the optical signal generating unit 26, an emitter of the fourth transistor Q4 is electrically connected to a base of the fifth transistor Q5, and an emitter of the fifth transistor Q5 is grounded. The driving unit 25 has advantages of simple structure and low cost.

A base of the sixth triode Q6 is electrically connected to a first end of the twelfth resistor R12, a second end of the twelfth resistor R12 is electrically connected to a sixth pin of the second nand chip U4, a collector of the sixth triode Q6 is electrically connected to a collector of the seventh triode Q7 and the optical signal generating unit 26, an emitter of the sixth triode Q6 is electrically connected to a base of the seventh triode Q7, and an emitter of the seventh triode Q7 is grounded. In this embodiment, the optical signal generating unit 26 includes a first light emitting diode M1 and a second light emitting diode M2, the first light emitting diode M1 is electrically connected to the collector of the fifth transistor Q5, and the second light emitting diode M2 is electrically connected to the collector of the seventh transistor Q7.

To sum up, at first, during the installation, only need with OBD interface 3 with the OBD interface 3 of vehicle be connected can, the installation is simple and connect reliably, owing to need not destroy the pencil of former car, utilize former data of former car, so more stable, improved the security. Secondly, through the cooperation among the delay trigger unit 21, the oscillation unit 22, the transistor switch unit 23, the warning sound generating unit 24, the driving unit 25 and the optical signal generating unit 26, when a thief touches the delay trigger unit 21, the warning sound generating unit 24 does not immediately generate an alarm sound, and sends out a warning sound after delaying for a short preset time, so that sudden attack occurs to break through the psychological defense line of the thief, so that the thief can be well repelled, and the anti-theft effect is good.

The OBD burglar alarm with good anti-theft effect provided by the present invention is introduced in detail, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. To sum up, this description content only does the embodiment of the utility model, not therefore the restriction the patent scope of the utility model, all utilize the equivalent structure or the equivalent flow transform that the content of the description and the attached drawing was done, or directly or indirectly use in other relevant technical field, all the same reason is included in the patent protection scope of the utility model, should not be understood as right the utility model discloses a restriction.

Claims (9)

1. The utility model provides an effectual OBD alarm of theftproof, includes the OBD interface, its characterized in that still includes the theftproof module, the theftproof module includes: delay trigger element, oscillation unit, transistor switch unit, warning sound production unit, drive unit and light signal production unit, delay trigger element with drive unit reaches the oscillation unit electricity is connected, oscillation unit with transistor switch unit electricity is connected, transistor switch unit with warning sound production unit reaches OBD interface electricity is connected, drive unit with light signal production unit electricity is connected, light signal production unit with OBD interface electricity is connected.

2. The OBD burglar alarm with good anti-theft effect of claim 1, wherein said delay trigger unit comprises a first trigger switch, a first resistor, a second resistor, a first capacitor and a first nand gate chip, a first end of said first trigger switch is electrically connected to a first pin and a second pin of said first nand gate chip, and a second end of said first trigger switch is grounded; the first end of the first resistor is electrically connected with the OBD interface, the second end of the first resistor is electrically connected with the first end of the second resistor, and the second end of the second resistor is grounded; the first end of the first capacitor is electrically connected with the second pin of the first NAND gate chip, the second end of the first capacitor is grounded, and the sixth pin and the tenth pin of the first NAND gate chip are electrically connected with the oscillation unit.

3. The OBD burglar alarm with good anti-theft effect as claimed in claim 2, wherein said delay trigger unit further comprises a potentiometer, a first end of said potentiometer is electrically connected to a second end of said first resistor, a second end of said potentiometer is electrically connected to a first end of said second resistor, and said first resistor is electrically connected to said second resistor through said potentiometer.

4. The OBD burglar alarm with good anti-theft effect of claim 2, wherein said delay trigger unit further comprises a first diode and a second trigger switch, an anode of said first diode is electrically connected to a fourth pin of said first nand gate chip, a cathode of said first diode is electrically connected to a first end of said second trigger switch, and a second end of said second trigger switch is grounded.

5. The OBD burglar alarm with good burglar effect according to claim 2, wherein said delay trigger unit further comprises a second diode, a third resistor, a fourth resistor and a second capacitor, an anode of said second diode is electrically connected to a first end of said third resistor, and a cathode of said second diode is electrically connected to a third pin of said first nand gate chip; the second end of third resistance with the OBD interface electricity is connected, the first end of fourth resistance with the second end electricity of third resistance is connected, the second end of fourth resistance with the first end electricity of second electric capacity is connected, the first end of second electric capacity with the eighth foot electricity of first NAND gate chip is connected, the second end ground connection of second electric capacity.

6. The OBD burglar alarm with good anti-theft effect according to claim 2, wherein said oscillating unit comprises a first 555 chip, a third capacitor, a fifth resistor and a sixth resistor, a first pin of said first 555 chip is connected to ground, a second pin of said first 555 chip is electrically connected to a first end of said third capacitor, a third pin of said first 555 chip is electrically connected to said transistor switch unit, and a fourth pin of said first 555 chip is electrically connected to a tenth pin of said first nand gate chip; the first end of the third capacitor is electrically connected with the first end of the fifth resistor, and the second end of the third capacitor is grounded; the second end of the fifth resistor is electrically connected with the first end of the sixth resistor, the first end of the sixth resistor is connected with the seventh pin of the first 555 chip, and the second end of the sixth resistor is electrically connected with the OBD interface.

7. The OBD burglar alarm with good anti-theft effect according to claim 6, wherein said oscillating unit further comprises a second 555 chip, a fourth capacitor, a seventh resistor, an eighth resistor, a ninth resistor and a first triode, a first pin of said second 555 chip is grounded, a second pin of said second 555 chip is electrically connected to a first end of said fourth capacitor, and a fourth pin of said second 555 chip is electrically connected to said driving unit; a first end of the fourth capacitor is electrically connected with a first end of the seventh resistor, and a second end of the fourth capacitor is grounded; a second end of the seventh resistor is electrically connected with a first end of the eighth resistor, a first end of the eighth resistor is connected with a seventh pin of the second 555 chip, and a second end of the eighth resistor is electrically connected with the OBD interface; a first end of the ninth resistor is electrically connected with the OBD interface, and a second end of the ninth resistor is electrically connected with a collector electrode of the first triode; the base electrode of the first triode is electrically connected with the first end of the fourth capacitor, the collector electrode of the first triode is electrically connected with the fifth pin of the first 555 chip, and the emitting electrode of the first triode is grounded.

8. The OBD burglar alarm with good anti-theft effect according to claim 6, wherein said transistor switch unit comprises a second transistor, a third transistor and a tenth resistor, a base of said second transistor is electrically connected to a first end of said tenth resistor, a second end of said tenth resistor is electrically connected to a third pin of said first 555 chip, a collector of said second transistor is electrically connected to said OBD interface and a collector of said third transistor, an emitter of said second transistor is electrically connected to a base of said third transistor, and an emitter of said third transistor is electrically connected to said warning sound generating unit.

9. The OBD burglar alarm with good burglar effect of claim 2, wherein the driving unit comprises a second nand gate chip, a fourth triode, a fifth triode, a sixth triode, a seventh triode, an eleventh resistor and a twelfth resistor, wherein a first pin of the second nand gate chip is electrically connected with an eleventh pin of the first nand gate chip, and a fourteenth pin of the second nand gate chip is electrically connected with a fourteenth pin of the first nand gate chip;

a base electrode of the fourth triode is electrically connected with a first end of the eleventh resistor, a second end of the eleventh resistor is electrically connected with an eleventh pin of the second nand gate chip, a collector electrode of the fourth triode is electrically connected with a collector electrode of the fifth triode and the optical signal generating unit, an emitter electrode of the fourth triode is electrically connected with a base electrode of the fifth triode, and an emitter electrode of the fifth triode is grounded;

the base electrode of the sixth triode is electrically connected with the first end of the twelfth resistor, the second end of the twelfth resistor is electrically connected with the sixth pin of the second NAND gate chip, the collector electrode of the sixth triode is electrically connected with the collector electrode of the seventh triode and the optical signal generating unit, the emitter electrode of the sixth triode is electrically connected with the base electrode of the seventh triode, and the emitter electrode of the seventh triode is grounded.

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