RU12086U1 - SECURITY SYSTEM OF AUTOMATIC IDENTIFICATION OF THE OWNER OF THE CAR - Google Patents

Abstract

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ESSAY

The proposed security system for automatic identification of the car owner contains a stationary part located on the car, including the first microcontroller with at least one external device, sensor, switch, actuator, first receiver with magnetic antenna and first transmitter connected to it, the output of which is connected with the first inductor, as well as the portable part located at the user, which includes a second receiver with a magnetic antenna, the input of which associated with a second inductor mounted for magnetic coupling with the first inductor and a second transmitter mounted to form a radio channel with a first transmitter. In this case, the portable part is built into a single remote control housing, which contains a second microcontroller, the first control output of which is connected to the second transmitter, and its first input is connected to the output of the second receiver, which includes a series-connected radio frequency amplifier, active detector, and low-power amplifier frequency, the output of which is the output of the second receiver, connected to the first input of the second microcontroller, the second input of which is connected to the keyboard, size ennoy on the body of the remote control.

Description

Security system for automatic identification of the car owner

The proposed utility model relates to the electrical equipment of a vehicle, and more specifically to a security system for automatic identification of a car owner.

A security system is known, which is controlled by radio using a miniature remote control (European Patent Office No. 0790160A2, B60R 25/00, Е05В 49/00, 08/20/1997).

This system allows the user to use the push-button remote control (hereinafter referred to as the remote control) to carry out all the necessary actions with the security system while outside the vehicle. This is convenient when the user has the opportunity to use the remote control. However, if 11DU is out of reach (it may be deep in the bag or your hands may be busy), certain difficulties arise.

A security system for a vehicle is known in which a two-way exchange channel is used between the stationary part located in the car and the portable part located at the user (US Patent No. 5.280.267, B60R, 25/10, 1994). The stationary part contains a transmitter with a nerve inductor operating at a frequency of 130 KHz and a receiver tuned to a frequency of 300 MHz. The portable part comprises a receiver with a second inductor and a miniature transmitter. The specified system blocks the engine in the absence of a portable part in the field of action of the stationary part. Pa nan1 look, this device is the closest analogue to the proposed

The known system allows automatic identification of the owner of the vehicle when it is in the range of the transmitting induction coil and disable anti-theft locks. The range of the devices is tens of centimeters, which makes it almost impossible to identify the owner outside the car.

In addition, this system does not have the ability to interact interactively, which significantly reduces its consumer characteristics.

For example, it is not possible to control additional channels, the quick disconnection of sensors (if a dog is left in the car), and so on.

In addition, in the known device in the portable part of the security system, a chipset manufactured by Dallas Semiconductor was used. This element base is oriented towards the automatic identification algorithm and, therefore, the system only blocks the engine in the absence of a portable part in the communication zone. It does not allow implementing interactive control of the alarm system, as well as the security algorithm with the engine running. In addition, the limited sensitivity of the receiving part does not make it possible to increase the communication range.

The basis of this utility model is the task of creating a security system for automatic identification of the owner of the car, which is designed to improve the consumer properties of the security complex of the car and allows both interactive control of the alarm system and automatic remote identification of the owner of the vehicle located at a distance of up to 5 meters from the stationary part i.e. outside the vehicle.

This problem was solved by creating a security system for automatic identification of the owner of the car, containing a stationary part located on the car, including the first driver with at least one external device connected to it, a sensor, a switch, an actuator, a first receiver with a magnetic antenna and a first transmitter, the output of which is connected to the first inductor, as well as the portable part located at the user, including a second receiver with a magnetic antenna, the input of which is connected to a second coil of inductance, magnetically coupled with the first coil of the inductance, and a second transmitter mounted with the possibility of forming a radio channel with the first transmitter, in which, according to a utility model, the portable part is integrated into a single remote control housing that contains a second a microcontroller, the first control output of which is connected to the second transmitter, and its

the first input is connected to the output of the second receiver, which includes a series-connected radio frequency amplifier, an active detector and a low-frequency amplifier, the output of which is the output of the second receiver connected to the first input of the second microcontroller, the second input of which is connected to a keyboard located on the remote control management.

The proposed useful model of security automatic identification of the owner of the car improves the consumer properties of the security complex of the car and allows both interactive control of the alarm system using the keyboard located in the remote control and automatic distant identification of the owner of the vehicle, located at a distance of up to 5 meters from the stationary part, there is out of transport.

It is advisable that the system of automatic identification of the owner of the car contains many sensors and switches, each of which is connected to the corresponding sty input of the first% p of the microcontroller via a voltage converter.

It is desirable that the system of automatic vehicle owner vehicle certification has a plurality of actuators, at least one of which is an audible and light alarm, which is connected to the corresponding controlled output of the first microcontroller via a signal conditioner.

For a better understanding of the proposed utility model, a specific example of its implementation is given below with reference to the attached drawing, which shows a block diagram of the proposed utility model.

The proposed system consists of two parts: the stationary part (1) located in the car and the overhead part (2) located directly at the user.

Stationary part 1 (hereinafter referred to as the control unit) consists of the following 1 nodes:

1.2.1. Signal converter from the ignition switch. 1.2.2 - 1.2.N. Signal converters from limit switches and sensors.

1.3.1. Signal conditioner to control the engine blocking relay. 1.3.2 - 1.3.N. Signal conditioners for controlling other executive devices (light, sound alarms).

1.4. Receiver (433 MHz).

1.5.Receiving antenna (433 MHz).

1.6. Transmitter (125 KHz).

1.7. Transmitting (Magnetic Antenna (125 KHz).

The portable part 2 (hereinafter referred to as the remote control) consists of the following units:

2.1 Transmitting Antenna (433 MHz)

2.2.Transmitter (433 MHz).

2.3. Microcontroller 2.4 Keyboard.

2.5. Reception magnetic antenna (125 KHz).

2.6 Radio Frequency Amplifier (125 KHz).

2.7 Active Detector

2.8.Low frequency amplifier.

11, the proposed security system for automatic identification of the owner of the car, shown in the accompanying drawing, contains the stationary part 1, marked on the car, including the first microcontroller 1.1 with sensors, switches, executing devices connected to it via voltage converters or signal conditioners (not shown in the drawing), the first receiver 1.4 with a magnetic antenna 1.5 and the first transmitter 1.6, the output of which is connected to the first cat P1 inductor 1.7. as well as a portable part 2 located at the user, including a second receiver, the input of which is connected to a second inductor 2.5, which is installed with the possibility of magnetic

interaction with the first inductor 1.7, and the second transmitter 2.2 with magnetic antenna 2.1, installed with the possibility of forming a radio channel with the first transmitter 1.6. In this case, the portable part 2 is built into a single remote control housing, which contains a second microcontroller 2.3, the first control output of which is connected to the second transmitter 2.2., And its first input is connected to the output of the second receiver, which includes a high-frequency amplifier 2.6 connected in series , an active detector 2.7 and a low-frequency amplifier 2.8, the output of which is the output of the second receiver connected to the first input of the second microcontroller 2.3, the second input of which is connected to 2.4 keyboard, etc., disposed in a housing remote control.

The proposed utility model of security automatic identification of the owner of the car improves the consumer properties of the security complex of the car and allows both interactive control of the alarm system using the keyboard located in the remote control and automatic remote identification of the owner of the vehicle located at a distance of up to 5 meters from the stationary part, eat outside the vehicle.

Consider the stationary part of the burglar alarm.

The control of external devices connected to the signal conditioners 1.3.1 - 1.3.N, as well as the transmitter 1.6 is carried out by microcontroller 1.1. Shapers 3.1 - 1.3.N provide coordination of the output logic levels of the microcontroller (from O to 5 V) with the voltages used to control external devices (O 12 V). These nodes can be collected on a single ULN2003 chip, which contains six buffer stages with a switching current of more than 0.5 A. Input information comes from the drivers 1.2.1 I.2.N and from the remote control 2 through the radio channel formed by the transmitter 433 MHz 2.2 and receiver 14. Shapers can be assembled according to the scheme of resistive voltage dividers, supplemented by circuits protecting the inputs of the microcog “troller from overloads. Transmitter

1.6 is a bridge amplifier, the load of which is a radiating coil 1.7.

The security system can be remotely controlled using a miniature remote control equipped with a 2.2 433 MHz transmitter with integrated 2.1 antenna, a microcontroller 2.3, a 2.4 keyboard and a 125 kHz receiver, which consists of a 2.5 receiving antenna, 26 pre-amplifier, 2.7 active detector and a low amplifier frequency, the output of which is connected to the input of the microcontroller 2.3. The device of the components of the remote control can be arbitrary and must provide the following characteristics: the sensitivity of the receiver is not worse than mV / m, the transmitter power is not higher than 10 mW, the current consumption of the device in standby mode is not more than 50 μA.

The proposed receiving part can be assembled on an elemental base of wide application and allows you to implement the proposed algorithm of the advanced remote control. As indicated above, the receiver is made as follows: magnetic antenna - radio frequency amplifier - active detector - low frequency amplifier. The presence of additional cascades increases the gain of the radio receiving path and increases the sensitivity of the receiver, which increases the communication range. As a high-frequency amplifier path, the circuitry given in the publication “Radio amateur reference book, M .: Radio and communications, 1990, section 2.2, Using surface mounting technology allows you to design a receiver with overall dimensions of not more than 15x20 mm.

The receiver operates as follows.

Call signal transmitted by the transmitter 1.6. it is converted by magnetic antenna 1.5 into alternating voltage with a frequency of 125 KHz (carrier frequency of the transmitting device)., modulated by a signal with a frequency of 250 Hz, Both the generation of a signal with a frequency of 125 KHz and its modulation by a signal with a frequency of 250 Hz are implemented in the microcontroller 1.1 of stationary part 1 using a software method. Dedicated 2.5 Reception Magnetic Antenna

the voltage is amplified by a radio frequency amplifier 2.6 (the cascade gain must be at least 60 dB) and converted by a 2.7 detector into a signal with a frequency of 2S () Hz. Further amplification and conversion of the signal into logical levels can be carried out by any dual micro-consuming operational amplifier 2.8.

The main function of the proposed utility model is to protect the car from unauthorized entry, dismantling of components and assemblies, and theft. In addition, the system implements the possibility of automatic remote identification of the vehicle owner at a distance of up to 5 meters.

Security system operates as follows.

The identification algorithm works on the principle: “request - response. The request signal is generated by microcontroller 1.1 and transmitted through the 1.6 transmitter and magnetic antenna 1.7. The call period is 1 second. Call duration no more than 50 ms. Times are chosen so that the user does not feel any delay during automatic identification and subsequent opening of the car when driving at a speed of up to 10 km / h.

The call signal is received by npvieMHHKOM 1.4, located in the portable part 1. In the case of receiving a call signal, a pulsating polarity pulse is generated at the output of receiver 1.4, which is fed to one of the inputs of microprocessor 2.3 of the remote control When a resolution pulse appears, the remote control processor must go into active state and form a special team, the code of which would be different from the codes transmitted when the buttons of the remote control are pressed. The command is broadcast using the radio transmitter 2.2 433 MG c integrated in the remote control. For reliable transmission, the desired team should be repeated at least 5 times. The differences in the algorithms for processing button presses and call signals are as follows: when using the 2.4 keyboard, the command to the audio channel is continuous, until the user is Riyo, in case of call recognition, the command is transmitted only 5 times. As soon as the alarm recognizes the identification command, it should

automatically disarm the car and unlock the driver’s door. If within 5 sec. car doors did not open, ignition did not turn on, etc., the beacon repeats the request. If the command is not recognized (for example, the user briefly approached the car), the alarm system must again arm the car and close all doors. The call procedure must be repeated whenever the security system enters the state: the engine is off, all doors are closed

Consider when the user wants to leave the car under guard without turning off the engine. Using an automatic identification algorithm, the driver has the opportunity to leave the car, taking with him a remote control. After opening and closing the door, the alarm tests the ignition signal. If the ignition is turned off, the engine does not work and full arming is carried out. If the ignition is on, then arming is performed with all sensors disabled (vibration sensor and volume change sensor). This function is in conflict with the mode of protection against robbery or robbery. Since the 1st alarm is obliged to turn off the engine some time after opening the door with the ignition on. In almost all alarm models, this function is turned off. That is, when turned off, bend from a robbery, the user can use the automatic arming with the engine running (using the remote identification capabilities). If the anti-robbery protection mode is activated, before leaving the car, leaving the engine running for 1 hour, it is necessary to additionally supply a remote control} from the remote control by pressing the corresponding button. Disarming in both cases occurs automatically.

Claims (3)

1. A security system for automatic identification of a car owner, comprising a stationary part located on a car, including a first microcontroller with at least one external device connected to it, a sensor, a switch, an actuator, a first receiver with a magnetic antenna and a first transmitter, the output of which connected to the first inductor, as well as a portable part located at the user, including a second receiver with a magnetic antenna, the input of which is connected a second inductor installed with the possibility of magnetic interaction with the first inductor, and a second transmitter installed with the possibility of forming a radio channel with the first transmitter, characterized in that the portable part is built into a single remote control housing that contains a second microcontroller, the first control output of which connected to the second transmitter, and its first input connected to the output of the second receiver, which includes serially connected a radio frequency amplifier, an active detector and a low-frequency amplifier, the output of which is the output of the second receiver connected to the first input of the second microcontroller, the second input of which is connected to a keyboard located on the remote control housing.  2. The system of automatic identification of the car owner according to claim 1, characterized in that it contains many external devices, sensors and switches, each of which is connected to the corresponding input of the first microcontroller through a voltage converter. 3. The system of automatic identification of a car owner according to claim 1, characterized in that it has a plurality of actuating devices, at least one of which is an audible and light alarm, which is connected to the corresponding controlled output of the first microcontroller through a signal conditioner.