JPH0338445A - Security device to be mounted on vehicle - Google Patents

Abstract

PURPOSE:To avoid reception of a signal from a transmission unit after specified time has elapsed to prevent trouble by providing a means for enabling reception of the arming signal from the transmission unit within said specified time since a door is closed. CONSTITUTION:A security device body 2 is equipped with an arming reception monitor 24 wherein a door from opening to closing is monitored based on an output of a door opening/closing sensor 31. When the door is closed, a reception signal RPS is set at high level to enable arming and time counting is started at the same time. After specified time has elapsed since time counting was started, the reception signal RPS is set at low level to disable arming. On the other hand, a security controller 25 refers to the level of the reception signal RPS, and when it certified that arming is enabled, it enters into a security operation state to have a burglar alarming unit 4 operated when unusualness occurs. After the above specified time has elapsed, the signal is not received even if a transmission unit 1 misoperates, so that trouble may be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a security device, and particularly to a security device that can activate and deactivate security using a portable transmitting unit.

<Prior art> An anti-theft device (security device) that prevents a car from being stolen is designed to prevent someone from opening the door of the car, giving a considerable shock to the car, or opening the trunk while the security system is activated in order to steal the car. The system then sounds the siren or flashes the car's headlights, and also cuts the starter (prevents the engine from starting) or cuts the fuel to prevent the car from running, thereby preventing theft.

Some such security devices use a portable transmitter unit (remote control unit) to start and stop security operations, and are capable of starting (referred to as arming) and stopping (referred to as disarming) security operations.
This is performed by pressing an arming key or a disarming key provided on the remote control unit.

By the way, in a security device using such a remote control unit, there is a possibility that a driver or a passenger in the vehicle operates the remote control unit while driving the vehicle and accidentally activates the arming, thereby activating the security device.

When security is activated while driving, vibration or noise is immediately detected by the vibration sensor or noise sensor because the car is moving, and this may cause the siren to suddenly sound, the car's headlights to flash, the starter to shut off, or the fuel to be turned off. This is extremely dangerous as it will cause the car to stop running if it is cut.

For this reason, with conventional security devices, when the ignition switch is on and the engine is running,
All signals from the remote control unit, such as arming signals and disarming signals, are not received.

<Problems to be Solved by the Invention> According to this conventional method, the above-mentioned danger due to incorrect operation of the remote control unit during driving can be prevented, but there are the following problems. That is, (1) It may be a problem if the security device becomes activated due to an erroneous operation when the ignition switch is not turned on, but conventional methods cannot prevent such a situation.

For example, if the remote control unit is accidentally activated when the ignition switch is turned off,
The driver or passenger's movements inside the vehicle or sounds from the audio device are considered to be abnormal and the siren sounds or the headlights flash, but conventional methods cannot prevent such erroneous operations. Incidentally, if the driver is not present and a fellow passenger or the like who does not know how to operate the remote control unit erroneously operates the remote control unit, the problem is particularly serious because the operator does not know how to operate the remote control unit and the abnormality continues, but this problem cannot be dealt with by conventional methods. The above is a case where the remote control unit is inside the car and is operated incorrectly, but even if the remote control unit is outside the car and is operated incorrectly, there are cases where you do not want to activate the security device, but conventional methods prevent such situations. Can not.

(2) In addition to the arming and disarming keys, the remote control unit may be equipped with vehicle control keys such as window opening/closing keys, etc., but in the conventional method, these keys are not used while driving. There is a problem in that the vehicle cannot be controlled such as opening and closing windows.

From the above, it is an object of the present invention to provide a security device that can prevent arming (entering into a security activation state) due to erroneous operation of the remote control unit not only while the vehicle is running, but also when the vehicle is not running.

Means for Solving the Problems> In the present invention, the above problems are solved by a portable transmitting unit that commands activation and deactivation of security, an in-vehicle receiving unit that receives signals from the transmitting unit, and a detection unit that detects the opening and closing of a car door. This is achieved by a detector for disarming, an arming signal acceptance monitoring unit, and a security control unit that starts a security operation in response to an arming signal and stops the security operation based on a disarming signal.

<Function> The arming signal from the transmitting unit can be accepted only within a predetermined time (for example, 10 seconds) after the door is closed, and the arming signal sent from the transmitting unit can be responded to only within the acceptable time. to start the security operation. It is sufficient to arm when leaving the car or within 10 seconds after closing the door, and there is no problem if you are unable to arm at any other time.
On the contrary, problems arise due to erroneous operation. According to the invention 1
If 0 seconds have passed, arming will no longer be possible, and there will be no problem due to erroneous operation.

<Embodiment> FIG. 1 is a block diagram of a security device according to the present invention. Reference numeral 1 denotes a portable transmitting unit (remote control unit), which can transmit arming signals, disarming signals, and other window opening/closing signals to the vehicle-mounted security device body by pressing a key. 1
1 is arming key 12 is disarming key, 1
3 is a window open key, 13' is a window close key, 14 is a microcomputer that generates a code and ID code according to the key when the key is pressed, and 15 is an amplitude modulation of the input code with a carrier wave of a predetermined frequency. A modulation circuit 16 is an LC oscillation circuit that amplifies the power of a modulated signal and radiates radio waves from a loop antenna 17 connected to the output side.

2 is a security device main body, which (1) is capable of accepting arming signals from the transmitting unit only within a predetermined time after the door is closed, and the arming signal is sent from the transmitting unit only within the acceptable time; (2) other signals can be received at all times, and the security operation is stopped upon reception of a disarming signal; (3) the relevant part of the vehicle is activated upon reception of vehicle control signals such as window opening/closing. control.

Note that the predetermined time is suitably about 10 seconds.

This is when you arm away from the car.

It is sufficient if the arming can be performed within 10 seconds after closing the door, and there is no problem if the arming cannot be performed at any other time, and problems may arise due to erroneous operation.

In the security device main body 2, 21 is an antenna;
2 is a receiving unit that receives and demodulates the signal transmitted from the remote control unit 1; 23 is a timer; and 24 is capable of accepting arming commands from the remote control unit 1 only within a predetermined time after the door is closed. The arming reception monitoring unit 25 is a security control unit, which starts the security operation in response to the arming command sent from the remote control unit 1 only during the reception possible time (when reception is possible signal RPS is at high level). let In addition, other orders are always accepted.

The security operation is stopped based on a disarming command, and each part of the vehicle is controlled based on vehicle control commands such as window opening/closing.

3: Door opening/closing, vibration, noise inside the car, trunk opening/closing,
This is a detection unit that detects when the ignition is turned on, and includes a door opening/closing sensor 31, a vibration sensor 32, . . . an ignition-on detection sensor 33, and the like.

4 is a theft prevention unit, and when an abnormality is detected by each sensor during security operation, the security control unit 25
The vehicle has a siren driver 41 that sounds a siren in response to a siren opening signal SDR output from the driver, and a light driver 42 that causes the headlights to blink in response to a blinking drive signal BLD.

Reference numeral 5 denotes an engine control section, which performs an engine start cut or a fuel cut in response to a signal ESP output from the security control section 25 when an abnormality is detected by each sensor during security operation, and prohibits starting of the engine.

Reference numeral 6 denotes a window driver that opens a window when the security device main body 2 receives a window opening/closing command from the remote control unit 1. FIG. 2 is a flowchart for explaining the arming operation of the present invention, in which (a) is a processing flow of the arming reception monitoring section 24, and (b) is a processing flow of the security control section 25.
The overall operation of FIG. 1 will be explained below according to this flow.

When the disarming state is assumed, the arming reception monitoring unit 24 sets the reception enable signal RPS to a low level. Therefore, even if the security control section 25 receives an arming command from the remote control unit 1, it does not activate security.

In this state, the arming reception monitoring unit 24 monitors whether the door is opened or closed (from open to closed) based on the output of the door opening/closing sensor 31 (step 101). and,
When the door is opened or closed, the signal RPS is set to a high level to enable arming (step 102), and time measurement is started (step 103).

Next, the arming monitoring section 24 checks whether a predetermined period of time, for example 10 seconds, has elapsed since the start of time measurement (step 104).
, if the time has not elapsed, the time is counted until 10 seconds have elapsed, and when 10 seconds have elapsed, the reception ready signal RPS is set to low level to disable arming (step 105),
Thereafter, the processing from step 101 onwards is repeated.

On the other hand, the security control unit 25 refers to the level of the acceptability signal RPS and monitors whether the arming is possible (Step 201). When the signal RPS becomes high level due to door opening/closing and the arming becomes possible, the remote control unit 1 It is determined whether the arming command has been received (step 202); if not, the process returns to step 201 and the subsequent processes are repeated.

If an arming command is received from the remote control unit 1 in the arming enabled state (within 10 seconds after the door is opened/closed), rYESJ is determined in step 202, so the security control unit 25 enters the security operating state (step 203).

Thereafter, the security control unit 25 monitors whether an abnormality is detected based on the sensor output (step 204), and if an abnormality has occurred, outputs the siren drive signal 5DR1 blinking rotation signal BLD and also outputs the engine start prohibition signal ESP. to prevent theft by outputting (step 205)
.

On the other hand, if no abnormality has occurred, check whether a disarming command has been received (Step 206); if so, cancel the security operation (Step 207);
Return to step 101.

If a disarming signal has not been received, check whether a window opening/closing command has been received (step 208);
If not received, repeat the process from step 204,
If it has been received, the window control signals wo and wc are output to open or close the window and the processing from step 204 onwards is repeated.

From the above, when driving, arming cannot be performed (security activation state cannot be achieved) after 10 seconds have passed after the door is closed, and arming is possible only within 10 seconds. Therefore, when driving, if 10 seconds have elapsed after sitting in the driver's seat and closing the door, arming will not be possible whether the vehicle is running or the engine is stopped, and problems caused by erroneous operation of the remote control unit can be solved.

Also, after you finish driving, get out of the car and close the door,
After a few seconds have elapsed, arming will no longer be possible, and there will be no further problems caused by incorrect operation of the remote control unit.

Furthermore, signals other than the arming signal sent from the transmitting unit can be accepted at any time, eliminating the problem of not being able to control the vehicle using the remote control unit while driving.

<Effects of the Invention> According to the present invention, arming signals can be received from the transmitting unit (remote control unit) only within a predetermined time after the door is closed, and the arming signal can be sent from the transmitting unit only within the acceptable time. Since the configuration is configured to start the security operation in response to the arming signal received by the driver, if a predetermined period of time has elapsed after the driver is seated in the driver's seat and the door is closed, regardless of whether the vehicle is running or the engine is stopped. Problems caused by erroneous operation of the remote control unit because arming cannot be performed are eliminated, and problems caused by erroneous operation of the remote control unit are also eliminated because arming becomes impossible after a predetermined period of time has elapsed after getting out of the car and closing the door after driving.

Furthermore, according to the present invention, signals other than the arming signal sent from the remote control unit can be accepted at any time, thereby eliminating the problem of not being able to control the vehicle using the remote control unit while driving.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the security device according to the present invention, and FIG. 2 is a flowchart for explaining the arming operation of the present invention. b) is a processing flow of the security control unit 25. 1. Transmission unit (remote control unit) 2. Security device body 24. Arming reception monitoring section 25. Security control section 3. Detection section 4. Anti-theft section 5. Engine control section

Claims (1)

[Claims] A portable transmitting unit that commands the activation and deactivation of security, an in-vehicle receiving unit that receives signals from the transmitting unit, a detector that detects opening and closing of a car door, and transmitting the said transmission only within a predetermined time after the door is closed. A start signal reception monitoring unit that enables reception of start signals from the unit, starts a security operation in response to the start signal sent from the transmitting unit only within the acceptable time, and performs security operations based on the stop signal. A security device characterized by having a security control unit that stops operation.