RU65835U1 - STEERING LOCK WITH AUTO SIGNALING SYSTEM USING ULTRASONIC WAVES - Google Patents

Abstract

The steering lock with an ultrasonic wave car alarm system includes the main housing of the locking device, which is mounted on the steering wheel in such a way as to limit the movement of the steering wheel, and an anti-theft alarm circuit located inside the outer casing of the main housing of the locking device, which is actuated when the main body is engaged locking device and steering wheel. In addition, the anti-theft alarm circuit includes at least one set consisting of a detection unit and a central processing unit (CPU) for detecting a moving body inside the car. The detection unit consists of an ultrasonic wave emitter that emits ultrasonic waves into the interior of the vehicle, and an ultrasonic wave receiver that receives and converts the reflected waves. The converted signals are transmitted to the central processor for recognition. If the signals are abnormal, the anti-theft alarm circuit starts a predefined alarm procedure to scare away suspicious people and notify the owner of the car.

Description

Technical field

This utility model relates to steering locks, and more particularly, to a steering lock with a car alarm system using ultrasonic waves.

Prerequisites for creating a utility model

In order to prevent theft of cars, car owners often use steering locks or gearshift locks in their cars. Although these locks are rigid in design and not easy to destroy, they are still amenable to clever abduction techniques. Unlocking them is only a matter of time. Therefore, anti-theft tools using traditional blockers are not effective.

In addition, electronic anti-theft devices in automobiles are often used at present to prevent theft by early detection of the intention to steal the car. This type of electronic car alarm system is often powered by car batteries and is activated by abnormal vibrations of the car body. To bring the system into active state, the sensors connected to the control system must detect abnormal movements, such as blows and penetration through the door, and then an alarm system is activated that makes loud noises that frighten the thief. However, since the electronic devices are powered by a car battery, they are difficult to install and easy to disconnect (hence, depriving them of the alarm function). Another drawback is that. that the electronic alarm system and the steering lock are independent devices and therefore. double machine protection is expensive. Another disadvantage of traditional car alarm systems is that they can be easily activated by shock waves from the surrounding area and will irritate residents living nearby, which can lead to the expectation of a “false alarm” and reduce the preventive effect of the alarm system.

Brief Description of the Drawings

Figure 1 is a perspective image of a steering lock with a car alarm system using ultrasonic waves, according to this utility model.

Figure 2 is a side view in cross section of a steering lock with a car alarm system using ultrasonic waves, shown in Figure 1, when it is mounted on the steering wheel.

Figure 3 is a block diagram of a block for recognizing ultrasonic waves, according to this utility model.

Summary of utility model essence

According to the above, the main goal of this utility model is to create a steering lock with a car alarm system using ultrasonic waves, which has the advantage of electronic detection / alarm systems and the strength of mechanical automobile locks. This utility model includes an electronic anti-theft alarm circuit and a mechanical steering lock on which this circuit is mounted. In addition, the anti-theft alarm circuitry includes an ultrasonic wave detection device that monitors environmental anomalies. In the event of unauthorized entry into the machine, the detection device can detect abnormal movements inside the machine and thereby trigger alarms. The mechanical lock, in addition, enhances the anti-theft device by locking the steering wheel of the car.

To achieve the above goals, this utility model proposes a steering lock with a car alarm system using ultrasonic waves. The steering lock includes: a mechanical locking device that is mounted on the steering wheel in such a way as to limit the rotation of the steering wheel, and an anti-theft alarm circuit located inside the upper part of the housing of the locking device, the anti-theft auto-alarm circuit being activated when the locking device and the steering wheel are engaged, and the anti-theft alarm circuit includes , in addition, at least one set consisting of a detection device and a central processor and designed to detect two Lens-moving inside the vehicle, wherein the detection device comprises a transmitter of ultrasonic waves emitted by the ultrasonic wave receiver and the ultrasonic

waves, which receives / converts the reflected ultrasonic waves, while the reflected ultrasonic waves are transmitted for recognition to the central processor, and the signals identified as abnormal initiate a predetermined car alarm process. The emitter of ultrasonic waves includes, in addition, a circuit for generating a high-frequency signal and a radiating unit, while the circuit for generating a high-frequency signal periodically generates ultrasonic signals with predetermined frequencies, and the radiating unit emits the generated ultrasonic signals into the interior of the vehicle; and the receiver of ultrasonic waves, in addition, includes a unit that receives ultrasonic waves, and a signal amplification circuit that are designed to receive and convert reflected ultrasonic waves; while the converted signals are transmitted to the central processor for recognition.

The various objectives and advantages of this utility model will be easier to understand from the following detailed description when reading it along with the accompanying drawings.

Detailed Description of Preferred Embodiments

As shown in FIGS. 1 and 2, a steering lock with a car alarm system using ultrasonic waves is a locking device 1 engaged with the steering wheel and includes a main body 11 of the locking device, fasteners 12 of the locking device, and an outer casing 12 of the locking device 12, a set of parts of a standard fixing device is housed in the main body 11 of the fixing body 12. In addition, the fastener 12 of the fixing device contains an element of the anti-theft car alarm circuit. The upper part of the fastener 12 of the locking element is connected to the outer casing 13 of the locking device, the cross section of which is in the form of the letter C. Each of the two sides of the fastening 12 of the locking device has a mounting hole 14, which are designed to install one or two parts 15 that engage and going down from the outer casing 13 of the locking device. An elongated shaft 18 protrudes from the bottom of the main body 11 of the locking device 18. In order to be able to use the locking device 1, the outer casing 13 of the locking device is first mounted on the steering wheel 51, while the recess on the inner side of the outer casing 13 of the locking device is engaged Crossbar 52 steering. Exercising

the engagement of the part 15 of the outer casing 13 of the locking device is inserted into the mounting holes 14 of the fastening 12 of the locking element. The rod 18 emerging from the main body 11 of the locking device extends into the upper part of the instrument panel. This limits the movement of the steering wheel. At the time when the fixing device 1 is attached, the anti-theft alarm circuit located inside it is activated, which can detect abnormal movements inside the car. As soon as any anomaly is detected, the circuit will turn on warning sound and light signals.

The anti-theft alarm circuit also includes at least one kit consisting of a detection unit and a central processing unit (CPU) for detecting a moving body inside the car. The detection unit emits ultrasonic waves to the interior of the vehicle and receives / converts reflected waves. The converted signal is transmitted to the central processor for recognition. If the signals are abnormal, the anti-theft alarm system will start a predefined alarm process to scare away suspicious people and notify the owner of the car.

As shown in FIG. 3, the detection unit consists of an ultrasonic wave emitter that emits ultrasonic waves into the interior of the vehicle, and an ultrasonic wave receiver that receives and converts the reflected waves. the ultrasonic wave emitter includes, in addition, a high-frequency signal generating circuit and an emitter that generate periodic ultrasonic signals with predetermined frequencies (for example, 40 KHz or other frequencies determined by the synchronizing device in the central processor). The emitting unit emits ultrasonic signals to the interior of the vehicle.

The ultrasonic wave receiver also includes an ultrasonic wave receiving unit and a signal amplification circuit, wherein the signal amplification circuit consists of a mixer / amplifier circuit, a detection circuit, a low pass filter, a low pass amplifier, a low pass pass circuit, a high pass pass circuit and a signal comparison loop. Thus, the ultrasonic wave receiving unit receives reflected ultrasonic signals from the interior of the vehicle, and the mixer / amplifier circuit amplifies these signals. The amplified signals are then converted to detection loops and low-pass filters, and the low-frequency component of the signals is amplified by an amplifier

low frequencies. The low-pass circuit attenuates the high-frequency component of the signals (above 30 KHz), and the high-pass circuit attenuates the low-frequency component of the signals (below 1.5 KHz). The converted signals are fed to the signal comparison circuit, and then to the central processor for recognition. If the width of signals having a high electric potential is less than 5 ms, then they are turned off; if the width is more than 5 ms, then the central processor starts counting in the interval of 1.5 s. When the number of samples per interval exceeds 16, the car alarm cycle begins. The recognition methods described above can significantly increase the accuracy of ultrasonic anti-theft detection.

In addition, the receiver of ultrasonic waves contains a tuning circuit that allows you to adjust the sensitivity when receiving signals. The circuit mainly contains a rheostat.

Summing up, we can say that under the given conditions for triggering an anti-theft alarm, the detection unit proposed in this utility model should detect an abnormal object moving inside the car when the abductor has already managed to penetrate into the interior of the car. In this case, the car alarm system is activated and generates predetermined light and sound signals to scare off the thief and notify the owner of the car. The mechanical locking device 1 mounted on the steering wheel, according to this utility model, can slow down the process of car theft.

Although this utility model is described in relation to a specific case, it is obvious that there may be various ways of its implementation. Such options cannot be considered as going beyond the scope and essence of this solution, and all such modifications, as is clear to a person skilled in the art, should be included in the scope in the following patent claims.

Claims (5)

1. Steering wheel lock with a car alarm system using ultrasonic waves, comprising a mechanical locking device that is mounted on the steering wheel so that the steering wheel rotation is limited, and an anti-theft alarm circuit located inside a part of the casing of the locking device, the anti-theft alarm circuit being activated when engaging the locking device and the steering wheel, and the anti-theft alarm circuit includes at least one set consisting of a detection unit and a central processor for detecting moving objects within the vehicle, the detection unit consisting of an ultrasonic wave emitter that emits ultrasonic waves and an ultrasonic wave receiver that receives / converts reflected ultrasonic waves, the reflected ultrasonic waves being transmitted to the central processor for recognition whereby the signals identified as abnormal include a predetermined signaling procedure. 2. The steering wheel lock according to claim 1, wherein the ultrasonic wave emitter further comprises a circuit generating a high frequency signal and a radiating unit, wherein the circuit generating a high frequency signal generates periodic ultrasonic signals with predetermined frequencies, and the detection unit emits generated, ultrasonic signals into the interior of the vehicle, and in which the receiver of ultrasonic waves, in addition, contains a unit for receiving ultrasonic waves and a signal amplification circuit that receives and converts dissolved reflected ultrasonic wave, the converted signals are transmitted to the CPU for recognition. 3. The steering lock according to claim 2, wherein the signal amplification circuit consists of a mixer / amplifier circuit, a detection circuit, a lowpass filter, a lowpass amplifier, a lowpass circuit, a highpass circuit and a signal comparison circuit, wherein the signals are amplified by the mixer / amplifier circuit, converted by the detection circuit and a low-pass filter, further amplified with respect to the low-frequency component by the low-frequency amplifier, weakened with respect to the high-frequency component, by the low-pass circuit, the converted signals are transmitted to the signal comparison circuit and then to the central processor for recognition, while the central processor uses an algorithm for evaluating the signal emission efficiency and the number of samples of the effective signal for a given interval to increase the accuracy of ultrasound detection anti-theft device. 4. The steering lock according to claim 2, in which the receiver of ultrasonic waves, in addition, contains a tuning circuit for adjusting the sensitivity of signal reception. 5. The steering lock according to claim 4, wherein the tuning loop comprises mainly a rheostat.