JPH0647059U - Auto arming device for car security - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the safety against theft in the case of an auto arming device for car security that does not get on immediately after disarming. [Configuration] When a disarming is performed by a signal from a separate remote control device 20, a control unit 16 of a microcomputer configuration provided in the anti-theft device body 1 performs disarming except for a door of a vehicle, With regard to, the presence of a person is detected by the radar sensor unit 2, the ID code of the remote control of the person is further confirmed, and the door unlock unit 5 is operated to unlock the door. In other cases, Disarm again to improve security against theft.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is an antitheft device for a vehicle such as an automobile, so-called car security, that is, arming or disarming by remote control operation using a personal identification code (ID code), without using a key. Related to those that lock or unlock doors.

[0002]

[Prior art]

 Conventionally, when locking or unlocking a door of an automobile or the like, it has been general to use a key. However, since this method can be comparatively easily unlocked by using other keys, theft accidents were by no means small.

Therefore, a certain code (personal identification code) is stored in the control device mounted on the vehicle, and the command relating to the personal identification code and door lock or unlock is transmitted from the outside of the vehicle using the remote control device. By doing so, an automatic arming device that unlocks or locks the door has been developed and put into practical use.

In such a conventional device, a door unlock signal is output at the same time when a remote control device performs a disarming operation, and the door is unlocked.

[0005]

[Problems to be solved by the device]

 In the above conventional device, there is no problem if getting on and off the vehicle according to a certain fixed procedure, which is very convenient, but accidentally disarms or the procedure of getting on and off is irregular. There was a problem in the case that it became a target. For example, when the vehicle is armed, the vehicle temporarily leaves, then comes back and approaches the vehicle and issues a disarm signal from the remote controller, the door is unlocked at the same time as described above. At this time, there is no problem if you get on the train immediately, but even if you sometimes talk to friends etc. without getting on and get away from the vehicle again, the door remains unlocked. And, there is a good chance it will be stolen. The present invention intends to provide an auto-arming device for car security having an anti-theft device which is effective in such cases.

[0006]

[Means for Solving the Problems]

 According to the present invention, in the present invention, the anti-theft device main body installed on the vehicle has a receiving means for receiving a signal such as a radio wave from a separate remote control device and a means for transmitting a signal to the remote control device. The separate unit is provided with a control unit for controlling arming including control of a door lock unit and a door unlock unit of the vehicle by a reception signal received by the receiving unit, and an approach detection unit for detecting an approach of a person to the vehicle. The remote control device is provided with transmitting means for transmitting a signal to the body of the anti-theft device installed on the vehicle side and receiving means for receiving a signal from the body of the anti-theft device, and the anti-theft device body is transmitted from the transmitting means of the remote control device. When a receiving arm signal is transmitted and the receiving means of the anti-theft device itself receives it, the control section causes the control section of the vehicle except for the door unlock. The remote control device receives the remote control device by detecting the presence / absence of a person approaching the vehicle by the approach detection means, and by transmitting an ID code check signal from the transmission means when the presence is detected. The control unit causes the door unlocking unit to operate to unlock the vehicle only when the ID code of its own is transmitted by the means and the transmitting unit, and only when the ID code is confirmed.

[0007]

[Action]

 The anti-theft device installed on the vehicle has both receiving and transmitting means, and a separate remote control device also has both receiving and transmitting means, enabling bidirectional communication, and with this bidirectional communication function, By combining with the approach detection means such as radar sensor, at the time of disarming, first disarm other than the door, and perform two-step check of the door for proximity detection and ID code confirmation Since it acts like a lock, the anti-theft effect is significantly improved.

[0008]

【Example】

 FIG. 1 is a block diagram of an embodiment of the present invention, in which 1 is an anti-theft device body mounted on a vehicle, and 20 is a separate remote controller. The anti-theft device body 1 of the present embodiment has a high-frequency amplifier circuit 11, a mixer 12, a local oscillator circuit 13 for receiving a signal input from the antenna 1a as a receiving means, and a reception signal demodulation. The detector 14 and the waveform shaping circuit 15 for shaping the demodulated signal waveform, and further, a control unit having a microcomputer configuration for controlling a door lock unit, a door unlock unit, etc., which will be described later, by an input from the waveform shaping circuit 15. 16, a memory 17 connected to the control unit 16, and a modulation circuit 18 and an oscillation circuit 19 which are connected to the control unit 16 as transmission means and are transmitted from the antenna 1b.

Further, 2 is a door sensor unit for detecting the open / closed state of the vehicle door, and 3 is a radar sensor unit as an approach detecting unit for detecting the presence of a person in the vicinity of the vehicle. The control unit 16 of the anti-theft device body 1 is made to input each.

Reference numeral 4 is a door lock portion for locking the vehicle door, 5 is an unlock portion for unlocking the door, and 6 is a siren portion for issuing an alarm in the event of theft, both of which are controls of the antitheft device body 1. It operates under the control of the section 16.

Further, the remote control device 20 of the present embodiment comprises, as its transmission means, an operation unit 21 having various keys and the like, a control unit 22 having a microcomputer configuration and a memory 23 connected to it, a modulation circuit 24, and an oscillation circuit 25. The output of the oscillation circuit 25 is connected to the antenna 20a. On the other hand, as a receiving means, the received signal from the antenna 20b passes through the high frequency amplification circuit 26, the signal is frequency-converted by the mixer 27a and the local oscillation circuit 27b, demodulated by the detector 28, and then shaped by the waveform shaping circuit 29. It is configured to be input to the control unit 22.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. First, the vehicle is stopped, the engine is turned off, is in the arming state (step 101), and the user of the vehicle (hereinafter, simply referred to as a person) returns to the vehicle from a state away from the vehicle. In an attempt to operate, the operation unit 21 of the remote control device 20 to be carried is operated to cause the control unit 22 to read the ID code and the disarming command from the memory 23, operate the modulation circuit 24 and the oscillation circuit 25, and transmit the signal from the antenna 20a. To do.

This signal is received by the antenna 1a of the antitheft device body 1 installed in the vehicle, and is received and demodulated by the receiving means, that is, the high frequency amplifier circuit 11, the mixer 12, the local oscillator circuit 13, and the detector 14. The signal shaped by the waveform shaping circuit 15 is input to the control unit 16. Since the control unit 16 continuously checks whether or not the disarm signal has been received (step 102), it is determined that the disarm signal has been received if this input is present (step 103), and any other device than the door unlock unit 6 is detected. Disarm the arming part (not shown) (step 104).

Next, the radar sensor unit 3 is operated for a predetermined time to detect a person approaching the vehicle. Then, the control unit 16 checks the presence or absence of the detection signal input from the radar sensor unit 3 by operating the timer for a predetermined time (step 105), and if there is the signal input, receives the radar sensor signal (step 106). If there is no signal input within the set time, it is assumed that a person is late in approaching the vehicle for some reason, or the vehicle has stopped, or the disarm signal is erroneously transmitted. Return to 1 and arm the vehicle.

When the radar sensor signal is received in step 106, the control unit 16 then transmits an ID check signal to the remote control device 20 carried by an approaching person (step 107). This is performed by the control unit 16 reading a predetermined command from the memory 17, actuating the modulation circuit 18 and the oscillation circuit 19, and transmitting from the antenna 1b.

The received ID check signal is received and demodulated by the antenna 20b, the high frequency amplifier circuit 26, the mixer 27a, the local oscillator circuit 27b, and the wave detector 28, and the receiving means of the remote control device 20 outputs its output to the waveform shaping circuit 29. Is input to the control unit 22 via the, and the control unit 22 reads out its own ID code stored in the memory 23, operates the modulation circuit 24 and the oscillation circuit 25, and transmits a signal from the antenna 20a.

This signal is received by the antenna 1a of the anti-theft device body 1 installed in the vehicle, and the presence or absence of the ID transmission signal input is checked via the above receiving means (step 108) to the control unit 16. Since the input is detected, the ID transmission signal is received if the input is detected (step 109), and the collation check with the ID code stored in the memory 17 connected to the control unit 16 is performed (step 110). If it is confirmed that the ID codes are the same, a door unlock signal is output here (step 111), and the door unlock unit 5 is operated to unlock the vehicle door.

In step 108, since the timer of the control unit 16 operates and the time is set, if there is no ID transmission signal input even after waiting for a predetermined time, and in step 110, check the ID code. If the collation results do not match, the process returns to step 101 and the vehicle is armed in any case.

FIG. 3 shows the arrival area A of the radar sensor detection signal and the ID check signal arrival area B from the vehicle C equipped with the antitheft device body including the radar sensor unit 2 in the embodiment of the present invention. As shown in the figure, when there is no signal input in step 105 as described above, that is, when the presence of a person in the area A is not detected by the radar sensor unit 2, arming is performed, and in step 108, the signal is input. If there is no input, that is, if the presence of a person in the area B is not detected by the input of the ID transmission signal, arming is performed.

In the above-described embodiment, the radar sensor is used as a means for detecting the approach of a person, but the reach of the ID check signal is limited and the signal is intermittently (for example, every few seconds). It can also be used as an approach detection means by transmitting.

[0021]

[Effect of device]

 As described above, according to the present invention, as an auto arming device for car security, conventionally, the doors are unlocked at the same time by the disarm operation, so there is a problem when the passenger does not get on immediately. However, by using a remote control device with a two-way communication function, the relationship between the disarm and the door unlock has two levels, so the anti-theft effect is significantly improved.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a flowchart of the operation of an embodiment of the present invention.

FIG. 3 is an explanatory diagram of a signal arrival area according to an embodiment of the present invention.

[Explanation of symbols]

 1 Anti-Theft Device Main Body 1a Antenna 1b Antenna 11 High Frequency Amplifier Circuit 12 Mixer 13 Local Oscillation Circuit 14 Detector 15 Waveform Shaping Circuit 16 Control Section 17 Memory 18 Modulation Circuit 19 Oscillation Circuit 2 Door Sensor Section 3 Radar Sensor Section 4 Door Lock Section 5 Door unlock part 6 Siren part 20 Remote control device 20a Antenna 20b Antenna 21 Operation part 22 Control part 23 Memory 24 Modulation circuit 25 Oscillation circuit 26 High frequency amplification circuit 27a Mixer 27b Local oscillation circuit 28 Detector 29 Waveform shaping circuit

Claims (1)

[Scope of utility model registration request] 1. An anti-theft device main body installed on a vehicle side includes a receiving means for receiving a signal such as a radio wave from a separate remote control device, a means for transmitting a signal to the remote control device, and a signal received by the receiving means. A control unit for controlling arming and disarming including control of a door lock unit and a door unlock unit of the vehicle according to the above, and an approach detection unit for detecting an approach of a person to the vehicle. The vehicle is provided with transmitting means for transmitting a signal to the body of the anti-theft device and receiving means for receiving a signal from the body of the anti-theft device, and a disarm signal is transmitted from the transmitting means of the remote control device to the body of the anti-theft device. When the receiving unit of the anti-theft device body receives the message, the control unit disarms the door of the vehicle without unlocking the door. In both cases, the proximity detecting means detects the presence or absence of a person approaching the vehicle, and when the presence is detected, an ID code check signal is transmitted from the transmitting means.
The control unit operates the door unlock unit to unlock the vehicle door only when the reception unit and the transmission unit of the remote control device are caused to transmit the ID code possessed by the remote control unit, and only when the ID code is collated and confirmed. Car arm auto-arming device characterized by performing.