WO2011000319A1

WO2011000319A1 - Vehicle anti-hijacking device and method

Info

Publication number: WO2011000319A1
Application number: PCT/CN2010/074882
Authority: WO
Inventors: 贺鹏麟
Original assignee: He Penglin
Priority date: 2009-07-01
Filing date: 2010-07-01
Publication date: 2011-01-06
Also published as: CN101633350B; CN101633350A

Abstract

A vehicle anti-hijacking device and a method are provided. The device comprises a switching unit for controlling connection and disconnection of an electric network of a vehicle, a first signal detecting unit, a second signal detecting unit, a time-delay unit, a password-input unit for inputting a password and a control unit pre-set with a password. Said control unit outputs a control signal after detecting, via said first and second signal detecting units, signals of a side door and a switch push-key, said control signal controlling said switching unit to cut off said electric network after a delay of time introduced by the time-delay unit. Said control unit compares the password input via said password-input unit with the pre-set password and connects said electric network via said switching unit when the two passwords are identical. Simple operation of the door and/or the vehicle lights will otherwise, after a certain amount of time, automatically cut off vehicle electricity and fuel supply and block a vehicle restart. The anti-hijacking device is structurally simple, safe and reliable.

Description

Car anti-robber device and method

Technical field

The invention relates to a car anti-robber device and method.

Background technique

The existing car anti-robbery devices are realized by the GPS system. The disadvantages are as follows: 1) Once the driver encounters the robbers and hijacks the car, he must press the alarm button pre-installed on the car to pass the information of the robbery through the car. The GPS and GSM system reports to the background management center of the GPS system. If the GPS system has a problem or the GSM system signal is not strong, the background management center will not be able to receive the alarm from the owner, thus failing to prevent robbery; 2) GPS anti-robbery system installation cost is high, the set needs at least 3,000 yuan or more; 3) GPS system is complex, relatively speaking, the chance of problems will be higher.

technical problem

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a vehicle anti-robber device and method with simple structure, simple operation, safety and reliability.

Technical solution

The technical solution adopted by the present invention to solve the technical problem thereof is: a vehicle anti-robber device, comprising a switch unit for controlling the on/off of the electric network of the automobile, a first signal detecting unit for receiving the signal of the side door of the automobile, and for receiving driving a second signal detecting unit of the indoor switch button signal, a delay unit for delay, a password input unit for inputting a password, and a control unit with a password preset, the control unit detecting by the first and second signals After the unit detects the signals of the side door and the switch button, the control unit outputs a control signal, and the control signal controls the switch unit to cut off the electrical network after the delay unit delays, and the control unit compares the The password input by the password input unit and the preset password enable the control unit to conduct the electrical network through the switch unit when the two passwords are identical.

The first signal detecting unit has a side door trigger signal detecting input terminal for connecting the side door and a side door signal output end for connecting the control unit, and the second signal detecting unit includes a switch button trigger signal detecting for connecting the switch button An input end and a switch button signal output end for connecting the control unit, the control unit includes an AND circuit, and the two input ends of the AND circuit respectively connect the side gate signal output end and the switch button signal output end, respectively An output terminal of the AND circuit is connected to the switching unit through the delay unit.

The switch button is a high beam switch or a low beam switch.

The switch unit includes a relay that is serially connected in an electrical network.

The switch unit further includes a triode, the electric network has an input end and an output end, the output end is connected to a common end of the relay, the input end is connected to a normally closed end of the relay, and the control unit is connected The triode, in a normal standby state, the relay operates in a normally closed state; in the anti-robbery state, the control unit controls the triode by

The control unit is a microprocessor integrated circuit.

A car, including an electrical network and a car anti-robber device. The password input unit is selected from the group consisting of a high beam switch, a low beam switch, an ignition switch, a dashboard button, and a car audio button switch.

A car robbery method comprising: a) a step for detecting a signal that the side door and the lamp is turned on; b) a step for forming a control signal according to the opened signal; c) for extending the control signal The step of d; d) the step of controlling the switch unit to completely cut off the electrical network of the car by the delayed control signal; e) the step of receiving the password input; and f) the password for comparing the input and the preset password And the step of controlling the switch unit to conduct the electrical network when the two passwords are consistent.

The headlights are high beam or low beam. The headlights are tail lights.

In the step e), the password is input through the high beam switch, the low beam switch, the ignition switch, the dashboard button, and the car audio button switch.

In the step d), before the electrical network is completely cut off, the method further includes: performing at least one cycle: d1) pre-cutting the electrical network through the switch unit; d2) conducting the electrical network through the switch unit.

Beneficial effect

The beneficial effects of the present invention are: 1) after receiving the signal that the side door and the switch button are turned on, the control unit outputs a control signal, and the control signal controls the switch unit to cut off the electrical network after a certain delay, so that the automobile enters the anti-theft and anti-robbery state; When switching to the normal standby state, you only need to enter the password, the password is the same, you can re-turn the electrical network through the switch unit; thus, after the driver is forced to get off the vehicle, only the driver's door and the switch button in the switch cab need to be opened. After a certain period of time, the car can be automatically powered off, cut off and extinguished, and cannot be restarted. The entire anti-robber device is simple, safe and reliable.

2) The password can be input through the far/low beam switch, the ignition switch or the existing component control switch in the car, without changing the existing circuit structure of the car, saving the modification cost.

3) After entering the anti-theft and anti-robbery state, if the vehicle is in the process of driving, it can be stepped off and power off in a step-by-step manner to prevent the vehicle from suddenly braking badly during high-speed driving, resulting in traffic accidents and avoiding other economic losses.

DRAWINGS

1 is a circuit schematic diagram of a first embodiment of a car anti-robber device of the present invention;

2 is a circuit schematic diagram of a second embodiment of the automobile anti-robber device of the present invention.

Embodiments of the invention

As shown in FIG. 1 , the automobile anti-robber device of the present embodiment includes a control unit, a first signal detecting unit, a second signal detecting unit, a password input unit, a delay unit, and a switch unit for controlling the on/off of the automotive electrical network. A signal detecting unit detects whether the driver side door is open, the second signal detecting unit detects whether the headlight is turned on, and the control unit detects a side door opening signal and a headlight opening signal, and then outputs a control signal to the delay unit, the control signal After the delay unit delays for a certain time, the control switch unit cuts off the electrical network of the automobile, such as cutting off the power supply of one of the engine ECU power circuit, the low-voltage ignition circuit control circuit, the oil pump circuit or the oil pump relay control circuit. The first signal detecting unit is configured to detect whether the side door is open and output a side gate signal, and has a positive trigger signal detecting input terminal SW2-A, a negative trigger signal detecting input terminal SW2-B, and a side gate signal output terminal SW-IN2, the positive trigger signal A diode D9, a resistor R15 and a comparator U4D are connected in series between the detection input terminal and the side gate signal output terminal. The anode of the diode D9 is used to connect the side gate, the cathode of the diode D9 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected. The opposite end of the U4D, the opposite end of the comparator U4D is connected to the reference voltage, and the output of the comparator U4D is connected to the side gate signal output. A diode D5, a resistor R5 and a comparator U4E are sequentially connected in series between the negative trigger signal detection input terminal and the side gate signal output terminal. The anode of the diode D5 is used to connect the side gate, the cathode of the diode D9 is connected to one end of the resistor R5, and the resistor R5 is connected. The other end is connected to the opposite end of the comparator U4E, the same end of the comparator U4E is connected to the reference voltage, and the output end of the comparator U4E is connected to the side gate signal output terminal SW-IN2. Under normal circumstances, when the side door is open, the signal line voltage is 0V, and when the side door is closed, the signal line voltage is 12V, which is the side gate negative trigger; of course, the signal line voltage is 12V when the side door is open, and the signal line voltage is 0V when the side door is closed. This is the side door is triggering. For a car with a side door positive trigger, the side door and the side door positive trigger signal detection input end can be connected; for a side door negative trigger car, the side door and the side door negative trigger signal detection input end can be connected, so that the anti-robber device can be compatible with the positive Triggered and negatively triggered models; of course, the anti-robbery device can only be used for negatively triggered cars or only for positively triggered cars. In the present embodiment, the models of the comparators U4D and U4E are LM339. Of course, other models or circuit modules having the same function may be used.

The second signal detecting unit is configured to detect whether the headlight is turned on and output a headlight signal, and has a headlight positive trigger signal detecting input terminal SW1-A, a negative trigger signal detecting input terminal SW1-B, and a headlight signal output terminal SW-IN1. The positive trigger signal detecting input terminal and the headlight signal output end are sequentially connected in series with a diode D2, a resistor R17 and a comparator U4B. The anode of the diode D2 is used for connecting the headlight, and the cathode of the diode D2 is connected to one end of the resistor R17. The other end of the resistor R17 is connected to the same end of the comparator U4B, the opposite end of the comparator U4B is connected to the reference voltage, and the output end of the comparator U4B is connected to the headlight signal output end. A diode D3, a resistor R4 and a comparator U4C are sequentially connected in series between the negative trigger signal detection input terminal and the headlight signal output terminal. The anode of the diode D3 is used for the headlight, and the cathode of the diode D3 is connected to one end of the resistor R4. The other end of R4 is connected to the opposite end of the comparator U4C, the same end of the comparator U4C is connected to the reference voltage, and the output end of the comparator U4C is connected to the headlight signal output terminal SW-IN1. Under normal circumstances, the signal line voltage is 12V when the headlights are turned on, and the signal line voltage is 0V when the headlights are off. This is the headlights being triggered; of course, the signal line voltage is 0V when the headlights are turned on, and the headlights are turned off. The signal line voltage is 12V, which is a negative trigger for the headlights. For a car that uses a headlight positive trigger, the headlight can be connected to the headlight positive trigger signal detection input terminal; for a car with a headlight negative trigger, the headlight can be connected to the headlight negative trigger signal detection input terminal, thereby The anti-robbery device can be compatible with a positive or negative triggering model; of course, the anti-robbery device can only be used for a negatively triggered car or only for a positively triggered car. In the present embodiment, the models of the comparators U4C and U4B are LM339. Of course, other models or circuit modules having the same function may be used.

For the anti-robbery device, the side door and the headlights are all turned on before entering the anti-theft and anti-robbery state. For the second signal detecting unit, it is preferable to detect a headlight signal, such as a high beam in a headlight. Of course, the detecting unit can also be used to detect a low beam, a tail light, an ignition switch, and a meter in a cab. Disk buttons or other switch buttons.

The password input unit includes a button K1 and a button K2 for inputting a password and a delay time. The button K1 can be used to input a first digit password, and the button K2 can be used to input a second digit password. The K2 can use the existing high beam switch, low beam switch, ignition switch, dashboard button or other components in the cab to control the switch, which can reduce the cost of modification. The dashboard button (or other switch button) It can be a knob or button for adjustment on the instrument panel, such as an air conditioner switch signal, a hand brake light switch, a seat adjustment button, and the like. The password input unit may also include one or more switch buttons. When the set password has multiple digits, one switch button can realize one digit input, and can also input multiple digits. When the password is input, the number of times the switch button is pressed is equal to the number of the digit corresponding to the password. If the number is 8, the button needs to be pressed 8 times, and the number of times of input can be judged by the blinking condition of the LED lamp.

The delay unit is used for delaying the control signal outputted by the control unit U2 and then outputting to the electrical network of the automobile. The delay unit can be integrated with the control unit or can be a separate setting. The control unit is a microprocessor integrated circuit of the type HT46R47, and of course, other circuit modules capable of implementing the functions of the present embodiment.

The switch unit is used for controlling the on/off of the automotive electrical network, and includes a relay and a transistor Q3. The electrical network has an input terminal ACC-IN and an output terminal ACC-OUT, and the output terminal ACC-OUT is connected to a common end of the relay, the input terminal The ACC-IN is connected to the normally closed end of the relay. The relay is model number G5RL 25V/16A relays, of course, other types of relays are also available. The anti-robber device usually works in a normal standby state, at which time the relay works in a normally closed state, that is, the input terminal ACC-IN and the output terminal ACC-OUT are turned on, and the LED flashes at regular intervals (such as 10 seconds). once. The port SW-OUT of the control unit is connected to the transistor Q3 via a resistor R7.

The car anti-robbery device further includes a memory U3, such as an EEPROM model AT2402, which stores information such as a password and a delay time, and is connected to the control unit U2 through an I2C interface. The car anti-robbery device includes an LED for displaying the working state and password input state of the device.

The car anti-robbery device is connected to the electrical network of the car through the connector CON1. The port B+ and GND of the connector CON1 are connected to the car battery 12V, and the input integrated circuit (model 7805) through the diode D1 is converted to 5V to supply power to the anti-robber device. The function of the diode D1 is to prevent the power source and the ground from being connected, and the port B+ A 12V power supply is also provided to the relay circuit.

When the headlights are turned on and the driver's side door is open (ie, SW1-IN1 inputs low level, SW1-IN2 inputs high level), the device enters the anti-robbery state and starts timing. After the time reaches the set time, for security needs The control unit U2 first outputs a high level through the port SW-OUT, so that the transistor Q3 is turned on and the relay is closed. The input terminal ACC-IN is disconnected from the output ACC-OUT control loop. After a delay of 1 second, the relay is controlled to close the control loop. Thus, multiple turns, and finally the control loop is disconnected, the engine stops working, and the vehicle is prohibited. And enter the anti-theft state.

After entering the anti-robbery state, the user can input the password to cancel the anti-robbery state. If the password input by the user is the same as the password preset in the memory U3, the device returns to the normal working state.

The password setting method is as follows:

a) Press the buttons K1 and K2 at the same time, the control unit is controlled by the port INDICATOR

Transistor Q4 makes the indicator light long, indicating that the password setting state is entered, waiting for the user to input the password;

b) Enter the first password, press button K2, the number is the first password you want to enter.

(The first time the indicator is pressed from long light to long press, it means the receiving button, followed by the flashing indicator button once). After the input is stopped, the indicator light will flash continuously, and the number of flashing is the same as the number of pressing the input;

c) Press the button K1, the indicator light turns to long light, indicating that the first password has been set;

d) Set the second password, the method is the same as the first password setting, ie step b);

Three, four or more digits of the password, the input method is the same as the above steps;

e) Press button K1, if the password setting is valid, store it in memory U3 through IIC port

Medium and exit password setting mode.

Password settings can also be used in another way, such as long press the headlight switch, you can also enter the password

To set the status, first enter the first password, then enter the second, third, and fourth digit passwords.

Anti-robber delay time setting method:

a) Press the button K2 and hold it. After about 2 seconds, the indicator light is on, indicating that the delay setting is entered.

state;

b) Press the button K2, the number of times is the required time, the unit is 1 time / minute;

c) After the button is stopped, the number of flashes is the same as the number of keystrokes entered;

d) Press button K1, if the time is set correctly, save the time and exit the time setting

Mode, return to normal standby state;

For the anti-robbery device and the car with the anti-robbery device, if the driver or the owner of the vehicle normally needs to turn off the headlights, the car will not be prevented from entering the anti-robbery state.

As shown in FIG. 2, it is a second embodiment of the present invention. The automobile anti-robber device of the present embodiment comprises a control unit, a first signal detecting unit, a second signal detecting unit, a password input unit, a delay unit and a switch unit for controlling the on/off of the automobile electrical network, and the first signal detecting unit detects driving Whether the side door is open, the second signal detecting unit detects whether the headlight is turned on, and the control unit detects a signal of the side door opening and a signal of the headlight opening, and outputs a control signal to the delay unit, and the control signal is delayed by the delay unit. After a certain period of time, the control switch unit cuts off the electrical network of the vehicle, such as cutting off the power supply of one of the engine ECU power circuit, the low voltage ignition circuit control circuit, the oil pump circuit or the oil pump relay control circuit.

The first signal detecting unit is configured to detect whether the side door is open and output a side gate signal, and has a positive trigger signal detecting input end and a negative trigger signal detecting input end. Under normal circumstances, when the side door is open, the signal line voltage is 0V, and when the side door is closed, the signal line voltage is 12V, which is the side gate negative trigger; of course, the signal line voltage is 12V when the side door is open, and the signal line voltage is 0V when the side door is closed. This is the side door is triggering. For a car with a side door positive trigger, the side door and the side door positive trigger signal detection input end can be connected; for a side door negative trigger car, the side door and the side door negative trigger signal detection input end can be connected, so that the anti-robber device can be compatible with the positive Triggered and negatively triggered models; of course, the anti-robbery device can only be used for negatively triggered cars or only for positively triggered cars.

The second signal detecting unit is configured to detect whether the headlight is turned on and output a headlight signal, and has a headlight positive trigger signal detecting input end and a negative trigger signal detecting input end. Under normal circumstances, the signal line voltage is 12V when the headlights are turned on, and the signal line voltage is 0V when the headlights are off. This is the headlights being triggered; of course, the signal line voltage is 0V when the headlights are turned on, and the headlights are turned off. The signal line voltage is 12V, which is a negative trigger for the headlights. For a car that uses a headlight positive trigger, the headlight can be connected to the headlight positive trigger signal detection input terminal; for a car with a headlight negative trigger, the headlight can be connected to the headlight negative trigger signal detection input terminal, thereby The anti-robbery device can be compatible with a positive or negative triggering model; of course, the anti-robbery device can only be used for a negatively triggered car or only for a positively triggered car.

The password input unit includes an external button for entering a password and delay time. The button can be used to control the switch of the existing high beam switch, low beam switch, ignition switch, dashboard button, car audio button or other components in the cab, so that the cost of the modification can be reduced. (or other switch buttons) can be knobs or buttons on the dashboard for adjustment, such as air conditioning switch signals, hand brake light switches, seat adjustment buttons, and the like.

The serial communication unit includes a UART serial communication circuit, which can be connected to a keyboard or input a password via a car DVD.

The delay unit is used to delay the control signal outputted by the control unit IC1 and then output to the electrical network of the automobile. The delay unit can be integrated with the control unit or can be a separate setting. The control unit is a microprocessor integrated circuit of the type STC12C5616, and of course, other circuit modules capable of implementing the functions of the present embodiment.

The switch unit is used for controlling the on/off of the automotive electrical network, and includes a relay and a transistor Q9. The electrical network has an input terminal ACC-IN and an output terminal ACC-OUT, and the output terminal ACC-OUT is connected to a common end of the relay, the input terminal The ACC-IN is connected to the normally closed end of the relay. The relay is model number G5RL 25V/16A relays, of course, other types of relays are also available. The anti-robber device usually works in a normal standby state, at which time the relay works in a normally closed state, that is, the input terminal ACC-IN and the output terminal ACC-OUT are turned on, and the LED flashes at regular intervals (such as 10 seconds). once. The port SW-OUT of the control unit is connected to the transistor Q9 via a resistor R23.

The car anti-robbery device is connected to the electrical network of the car through the connector CON1. The port B+ and GND of the connector CON1 are connected to the car battery 12V, and the input integrated circuit (model 7805) through the diode D10 is converted to 5V to supply power to the anti-robber device. The function of the diode D10 is to prevent the power source and the ground from being connected. In addition, the port B+ A 12V power supply is also provided to the relay circuit.

When the headlights are turned on and the driver's side door is open (ie, SW1-IN1 inputs low level, SW1-IN2 inputs high level), the device enters the anti-robbery state and starts timing. After the time reaches the set time, for security needs The control unit is divided into three times. The control unit IC1 first outputs a high level through the port SW-OUT, so that the transistor Q9 is turned on and the relay is closed. The input terminal ACC-IN is disconnected from the output ACC-OUT control loop. After a delay of 1 second, the relay is controlled to close the control loop. Thus, multiple turns, and finally the control loop is disconnected, the engine stops working, and the vehicle is prohibited. And enter the anti-theft state.

After entering the anti-robbery state, the user can enter the password to release the anti-robbery state. If the password input by the user is the same as the password preset in the memory, the device returns to the normal working state.

The password setting method is as follows:

a) Enter the password "444" through the red password button (or high beam switch, ignition switch, car audio switch) to enter the password modification mode.

b) After the input is successful, the red LED indicator is constant. At this time, the original password must be entered (the initial password needs to be entered for the first time). If the original password is correct, the red LED indicator is always on, and the new password can be set. The input is the same for two consecutive times, the password is set successfully, and the password setting mode is introduced.

To set the status, first enter the first password, then enter the second and third digits.

The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Claims

A car anti-robber device, comprising: a switch unit for controlling on/off of an electric network of a car, a first signal detecting unit for receiving a signal of a side door of the car, and a second signal detecting for receiving a signal of a switch button in the cab a unit, a delay unit for delay, a password input unit for inputting a password, and a control unit with a password preset, the control unit detecting signals of the side door and the switch button by the first and second signal detecting units Afterwards, the control unit outputs a control signal, and the control signal controls the switch unit to cut off the electrical network after delaying by the delay unit, and the control unit compares the password and preset input by the password input unit. The password enables the control unit to conduct the electrical network through the switch unit when the two passwords are identical.
The anti-robbery device for a car according to claim 1, wherein said first signal detecting unit has a side door trigger signal detecting input terminal for connecting the side door and a side door signal output end for connecting the control unit, said The two signal detecting unit includes a switch button trigger signal detecting input terminal for connecting the switch button and a switch button signal output terminal for connecting the control unit, the control unit including an AND circuit, two input ends of the AND circuit The side gate signal output end and the switch button signal output end are respectively connected, and the output end of the AND circuit is connected to the switch unit through the delay unit.
The anti-robbery device for a car according to claim 1 or 2, wherein the switch button is selected from the group consisting of a high beam switch, a low beam switch, a tail light switch, an ignition switch, and a dashboard button in the cab.
The anti-robbery device for a car according to claim 1 or 2 or 3, wherein the switch unit comprises a relay connected in series in an electrical network.
The anti-robbery device for a car according to claim 4, wherein said switch unit further comprises a triode, said electrical network having an input end and an output end, said output end being connected to a common end of said relay, said input The terminal is connected to the normally closed end of the relay, the control unit is connected to the triode, and in a normal standby state, the relay operates in a normally closed state; in the anti-robbery state, the control unit controls the triode by On and off to control the relay to pull in or off.
The anti-robbery device for a car according to claim 5, wherein said control unit is a microprocessor integrated circuit.
An automobile, comprising an electrical network, characterized by further comprising the anti-robbery device of any one of claims 1-6.
The automobile according to claim 7, wherein the password input unit is selected from the group consisting of a high beam switch, a low beam switch, an ignition switch, a dashboard button, and a car audio button switch.
A car robbery method, characterized in that:

a) a step for detecting a signal that the side door and the lamp are turned on;

b) a step for forming a control signal based on the opened signal;

c) a step for delaying the control signal;

d) a step for controlling the switch unit to completely cut off the electrical network of the vehicle by the delayed control signal;

e) a step for receiving a password input;

f) steps for comparing the entered password with the preset password;

And a step of controlling the switch unit to conduct the electrical network when the two passwords are consistent.
The automobile anti-robbery method according to claim 9, wherein the headlight is a high beam.
The automobile anti-robbery method according to claim 9, wherein the headlight is a low beam or a tail light.
The anti-robbery method for a car according to any one of claims 9-11, characterized in that in the step e), the high beam switch, the low beam switch, the ignition switch, the dashboard button, the car audio button Switch the password.
The automobile anti-robbery method according to any one of claims 9 to 12, characterized in that, in the step d), before the electrical network is completely cut off, the step of performing the loop at least once is further included: d1) passing the switch unit Pre-cutting the electrical network; d2) conducting the electrical network through the switching unit.