JP2003072519A - Anti-theft device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anti-theft device which can reduce the current consumption to prevent a battery from going flat if the battery of a vehicle is not charged, and the theft alarm and notification are reliably performed when the theft is detected. SOLUTION: Power is supplied through the independent control for each of a device for detecting the theft such as an impact sensor 8 and an immobilizer 6, a device for giving an alarm by a sound or a light when detecting the theft such as a buzzer 2 and an indicator, and a device for performing the notification when detecting the theft such as a portable transceiver 101.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a theft prevention device capable of reliably performing a theft warning process and a theft notification process when a theft is detected.

[0002]

2. Description of the Related Art Conventionally, when a sensor for detecting theft installed in a vehicle compartment detects theft, a warning sound such as a buzzer or warning processing such as warning lighting by an indicator lighting, or theft using a wireless device or the like. There is known a theft reporting system having a function of acquiring a report from a stolen vehicle such as a police or a theft monitoring center, and notifying the center of the theft tracking and reporting to the police.

In-vehicle devices in such a theft reporting system include devices for detecting theft such as immobilizers and impact sensors, sounding of a buzzer for warning theft when theft is detected, warning lighting by an indicator, etc. If the device that performs the warning process of and the theft is detected,
Equipped with a device that notifies the police and theft monitoring center that the vehicle has been stolen. If an abnormality is detected in the vehicle while the vehicle is parked, etc., it will report to a preset theft monitoring center. It is configured to automatically notify by wireless communication first.

The in-vehicle device in the conventional theft reporting system operates by being supplied with power from the battery of the vehicle. The above-mentioned device for detecting the theft,
Power is supplied from the battery of the vehicle to all the devices that perform the warning process and the devices that report the theft.

[0005]

However, in the conventional vehicle-mounted device, when the vehicle is not moved for a long time, the power is supplied without charging the battery of the vehicle, so that the battery is exhausted and theft is detected. There was a problem that the power supply to the device was cut off and theft detection could not be performed. In order to avoid the occurrence of this problem, if the power to the in-vehicle device is turned off when the engine is stopped to prevent power consumption, the theft detection function does not work when the engine is stopped. There were problems such as the inability to report theft.

The present invention is intended to solve such a problem, and when the vehicle battery is not charged, the current consumption is reduced to prevent the battery from running down.
(EN) Provided is a theft prevention device capable of surely executing a theft warning process and a theft notification process when a theft is detected.

[0007]

A theft prevention device of the present invention comprises a theft detection means for detecting theft of a vehicle, and a theft warning processing for carrying out a theft warning process when the theft detection means detects the theft of the vehicle. Means or at least one of the theft notification means for performing a theft notification process when the vehicle is detected by the theft detection means, the theft detection means, and at least one of the theft warning means or the theft notification means And a power supply control means for independently controlling power supply. With this configuration, when the vehicle battery is not being charged, such as when the engine is stopped, power is supplied only to the theft detection means, and the vehicle battery is charged when the engine is operating. When the engine is stopped or theft is detected, power is supplied to not only the theft detection means but also at least one of the theft warning means and the theft notification means. When the battery is not charged, it not only lowers the power consumption and prevents the battery from running down, but it also ensures theft detection by continuing to supply power to the theft detection means, and also supplies power to the vehicle battery. If supply is being carried out or if theft is detected, at least a theft warning means or a theft reporting means By starting the power supply to the person, since it is possible to maintain a state capable of performing at least one theft warning process or theft process, so that the at least one theft warning process or theft can be processed reliably performed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an anti-theft device according to an embodiment of the present invention. This embodiment is used for anti-theft that outputs a warning sound to notify that the vehicle has been stolen when it is detected that the vehicle has been stolen, and for theft notification that automatically notifies the police or theft monitoring center. It is a thing.

The anti-theft device of the present embodiment includes a theft monitoring device 1, a buzzer 2, an LED 3, a GPS antenna 4, a mobile phone antenna 5, an immobilizer 6, a key cylinder 7, which are connected to the theft monitoring device 1, respectively. And an impact sensor 8. Electric power is supplied from the vehicle battery 9 to the theft monitoring device 1.

The theft monitoring device 1 includes a controller 102, a warning sound generator 103 connected to the controller 102, an illumination controller 104, a GPS receiver 105, a gyro sensor 106, a speed pulse receiver 107, and an external device. It has a device connection interface 108, a storage unit 109, and a switch 110. Further, the theft monitoring device 1 includes the first to fifth power supply control units 111 to 1
Having 15.

The buzzer 2 is connected to the warning sound generator 103, and the LED 3 is connected to the illumination control unit 104.
The GPS antenna 4 is connected to the GPS receiver 105, and the mobile phone antenna 5 is connected to the mobile phone radio 101.

The theft monitoring device 1 is mounted on a vehicle and monitors a theft by receiving a signal from a sensor for detecting the theft. When the theft is recognized, a buzzer 2 and an LED are provided.
Use the 3 or the like to give a theft warning and use a mobile phone radio
Use 101 to report theft to a theft surveillance center.

Further, the theft monitoring device 1 supplies power to devices for detecting theft such as the immobilizer 6, power supply to the cellular phone radio 101, power supply to the control unit 102, warning sound generating device 103, lighting. The power supply to the device that performs the theft warning process such as the control unit 104 and the power supply to the device that detects the position such as the GPS receiver 105 are independently controlled, and the vehicle battery 9 is charged by stopping the engine. If not stolen, while continuing the theft monitoring by supplying power to the control unit 102 and the device that detects the theft, the device that performs the theft warning process when the theft is detected while power consumption is suppressed and the power consumption is suppressed. Warning by supplying power to the mobile phone radio, and theft warning processing including power supply control that performs power theft notification processing by supplying power to the mobile phone radio 101, and theft notification Provided with a function to carry out the management.

Under the control of the control unit 102, the portable telephone radio set 101 calls the telephone number of the theft monitoring center using the portable telephone line network to notify the theft monitoring center that the vehicle has been stolen, and Performs processing to transmit data such as the date and time and the factors that detected theft.

The warning sound generator 103 controls the sounding of the buzzer 2 in response to a signal from the control unit 102. Lighting control unit 104
Controls the illumination of the LED 3 by a signal from the control unit 102.

The GPS receiver 105 performs a process such as demodulating the information acquired from the GPS antenna 4 and a GPS receiving process for outputting the data as position data to the control unit 102. When a certain angle changes, the gyro sensor 106 outputs the angle change information such as a voltage change. The speed pulse receiver 107 converts the pulse signal output in synchronization with the rotation of the wheel into waveform-shaped data, or converts it into vehicle speed information using numbers or the like and transmits the information to the control unit 102.

The external device connection interface 108 connects to an external device (not shown) and sends a signal requesting the history of the theft from the external device and the state of the device to the control unit 10.
2, the stolen history information such as past theft date and time output from the control unit 102 in response to the request signal, the factor that detected the theft, etc. is recorded, and the state of the device such as an abnormal state or a normal state of the device Is output to an external device.

The storage unit 109 records the history of information from each sensor, the theft monitoring status, the date and time of the theft, and information such as theft factor information in accordance with a recording instruction from the control unit 102. In response to a read request from the control unit 102, a process of outputting recorded information is performed.

The switch 110 outputs the on / off status of the switch itself to the control unit 102.

The control unit 102 is composed of a microcomputer, etc., and supplies power to devices for detecting theft such as the immobilizer 6, power supply to the cellular phone radio 101, and buzzer 2 and LED 3 theft warning processing. In addition to independently controlling the power supply to the device that implements, the power supply to the device that detects the position of the GPS receiver 105 and the like,
The position data from the GPS receiver 105 is regularly monitored, the angle information is monitored from the gyro sensor 106, the rotation state of the wheel is monitored from the speed pulse receiver 107, and further, the immobilizer 6, the key cylinder 7, and the impact sensor are monitored. If you detect theft by monitoring the status of 8, buzzer 2,
A warning process is performed using the LED 3 or the like, or a process of transmitting the stolen information using the mobile phone wireless device 101 is performed.

The first power supply controller 111 steps down the power supply voltage from the vehicle battery 9 and supplies it to the controller 102.

The second power supply control unit 112 reduces the power supply voltage from the vehicle battery 9 to supply power to the immobilizer 6, the key cylinder 7 and the impact sensor 8 and also supplies power according to the control signal from the control unit 102. It controls the supply stop and power supply implementation.

The third power supply control unit 113 reduces the power supply voltage from the vehicle battery 9 to supply power to the mobile phone radio 101, and stops the power supply in accordance with a control signal from the control unit 102. Controls power supply implementation.

The fourth power supply control unit 114 reduces the power supply voltage from the vehicle battery 9 to supply power to the warning sound generator 103 and the lighting control unit 104, and at the same time, the control unit 1
The power supply is stopped and the power supply is controlled according to the control signal from 02.

The fifth power supply control unit 115 reduces the power supply voltage from the vehicle battery 9 to supply power to the GPS receiver 105, the gyro sensor 106 and the speed pulse receiver 107, and at the same time, the control unit 102. The power supply is stopped and the power supply is controlled according to the control signal from.

The buzzer 2 emits a warning sound when a theft is detected or when an abnormality occurs such that the wireless communication cannot operate normally. The LED 3 warns with light such as an indicator when an abnormality such as the theft is detected or the wireless communication cannot operate normally. GPS antenna 4 is GPS
Receives information from satellites. The mobile phone antenna 5 notifies the theft monitoring center by using wireless means such as a mobile phone network in a situation where theft is detected. The immobilizer 6 communicates with the key of the vehicle, performs control so that the key of the vehicle can be rotated only when the key can be collated, and outputs the collation result to the control unit 102.
The key cylinder 7 has the function of turning the key only when the immobilizer 6 collates with the key and the shape of the key is the same as the unlocked shape of the cylinder. Is supplied, IG
When the key is turned to the display of, the power supply is controlled so that the ignition power is supplied. When the impact sensor 8 detects a certain impact, the impact sensor 8 outputs a signal indicating that the impact has been detected to the control unit 102. The vehicle battery 9 is already installed in the vehicle and supplies power to the theft monitoring device 1 and peripheral devices such as sensors for detecting theft, and when the engine of the vehicle is operating, the rotation of the engine is used. It has a function of recovering the consumed electric power by the power supply from the generator that generates electricity.

Next, the operation of the first embodiment will be described. The first power supply control unit 111 reduces the power supply voltage from the vehicle battery 9 by the power supply from the vehicle battery 9 and adjusts the voltage adjusted to the power supply voltage of the control unit 102 including a CPU to the control unit 102. Supply to. The control unit 102 can perform the theft detection process, the theft notification process operation, and the theft warning process by the power supply.
Further, the control unit 102 outputs a control signal permitting power supply to the second power supply control unit 112, and the second power supply control unit 11
2 supplies power to the immobilizer 6, the key cylinder 7, and the impact sensor 8.

The immobilizer 6 continues the collation with the key, and outputs the collation result to the control unit 102 and the key cylinder 7 when the collation is successful. The key cylinder 7 compares the shape of the key with the release shape held by the key cylinder, and outputs a signal from the immobilizer 6 indicating that the key shape and the release shape match each other. When received, permission to turn the key is given. The key cylinder 7 is for the user to turn the key for the purpose of using the vehicle,
When the key is rotated to the accessory power supply position, control is performed to supply the accessory power supply to the theft monitoring device 1 and the vehicle. Further, when the key is rotated to the ignition power supply position, control is performed to supply the ignition power to the theft monitoring device 1 and the vehicle.

When the control unit 102 determines that the accessory power supply is supplied by the output of the key cylinder 7 or the engine is started by the supply of the ignition power supply and the charging of the vehicle battery 9 is started, the third power supply is used. The control unit 113, the fourth power supply control unit 114, and the fifth power supply control unit 115 output signals for permitting power supply. Conversely, when the accessory power supply and the ignition power supply are cut off, it is determined that the engine has stopped and the charging of the vehicle battery 9 has stopped, and the third power supply control unit
113, a fourth power supply controller 114, and a fifth power supply controller 11
Outputs a signal to prohibit power supply to 5.

Further, the control unit 102 sets a condition for returning to the normal operation by the interrupt recovery process in order to reduce the power consumption when the supply of the accessory power supply and the ignition power supply is cut off. Move to power mode or stop mode to stop the clock.

In the low power consumption mode and the stop mode of the control unit 102, when the signal of any one of the immobilizer 6, the key cylinder 7 or the impact sensor 8 is input, the process returns to the interrupt recovery process and the normal operation is performed.

Next, a state in which the accessory power supply or the ignition power supply is being supplied will be described. When the accessory power supply or the ignition power supply is supplied, the control unit 102 sends a signal to the third power supply control unit 113, the fourth power supply control unit 114, and the fifth power supply control unit 115 to permit power supply. Is output. The third power supply control unit 113, upon permission from the control unit 102, lowers the power supply supplied from the vehicle battery 9 and supplies the reduced power supply to the mobile phone wireless device 101. Fourth power control unit
114 is the vehicle battery 9 with permission from the control unit 102.
The power supplied from is stepped down and supplied to the warning sound generator 103 and the lighting control unit 104. Fifth power supply control unit 1
15 is a vehicle battery 9 with permission from the control unit 102.
The power supplied from is stepped down and supplied to the GPS receiver 105, the gyro sensor 106, and the speed pulse receiver 107.

When the power is supplied from the fifth power supply control unit 115, the GPS receiver 105 starts its operation and outputs the satellite information acquired from the GPS antenna 4 to the control unit 102, or outputs the output satellite information. Based on this, position information is generated and output to the control unit 102. The control unit 102 controls the G
The position information acquired from the PS receiver 105 is stored in the storage unit 109. Here, the GPS receiver 105 and the control unit 102
Communication is performed with an asynchronous serial signal, and a periodic signal output from the GPS receiver 105 at regular intervals, or a request signal if necessary, is output, and the periodic signal or an event signal corresponding to the request signal is acquired. All information can be acquired. Thus, when the control unit 102 detects an abnormality in the GPS receiver 105, such as when communication processing cannot be executed normally, it becomes possible to perform abnormality transmission processing to the user using the buzzer 2 and the LED 3.

Further, the GPS receiver 105 supplies power to the antenna amplifier circuit provided inside the GPS antenna 4. When the control unit 102 grasps the power supply status to the antenna amplifier circuit and detects an abnormality in the power supply to the GPS antenna 4, the control unit 102 determines that the GPS antenna 4 is stolen and removes it, and uses the buzzer 2 and the LED 3. Performs theft warning processing for users and abnormality transmission processing. The abnormality warning process and the anti-theft process are performed by changing the ringing pattern and ringing frequency of the buzzer 2 so that the LED
It is possible to represent the difference in information to be transmitted by changing the illumination color, lighting, and blinking pattern of No. 3.

The gyro sensor 106 is provided with a vibration sensor or the like, detects a change in the angle due to a change in the direction of the vehicle, generates a signal corresponding to the change in the angle, and outputs the signal to the control unit 102. To do. The angle information is generally transmitted by changing the voltage with the operating voltage of the gyro sensor 106 as a dynamic range.

The fifth power supply control unit 115 supplies power to the gyro sensor 106 and also supplies the same power supply voltage to the analog reference voltage input terminal of the analog-digital converter provided in the control unit 102. To do. The gyro sensor 106 outputs angle information as a voltage value when the angle variation is confirmed in the power supply voltage range. For example, when a voltage of 5 [V] is applied to the gyro sensor 106, the gyro sensor 106 outputs a voltage of about 2.5 [V] in a non-rotating state. When it is detected that it has rotated further to the right, it is possible to change from 2.5 [V] to 5.
A voltage between 0 [V] is output, and when it is detected that the motor rotates to the left, a voltage between 0 [V] and 2.5 [V] is output. The control unit 102 controls the reference voltage 5 [V].
By inputting to which level the change has occurred, the change in the angle can be detected. Gyro sensor 10
The voltage output from 6 fluctuates depending on the size of the changed angle, or whether it changes abruptly or gently.Therefore, by measuring the voltage level or the time required until it fluctuates, the angle Can be detected. The control unit 102 receives the signal indicating the angle variation and stores the signal in the storage unit 109. Further, by detecting the abnormality of the gyro sensor 106, the reliability of the theft prevention device and the theft reporting device can be improved. The control unit 102 can monitor the output voltage from the gyro sensor 106 and, if an abnormal voltage is detected, determine that it is abnormal, and can execute an abnormality warning process, a theft warning, and a theft notification process. Becomes

The speed pulse receiver 107 receives a signal related to the number of rotations of a wheel mounted on a wheel, steps down the signal and shapes the pulse signal, corrects the value, or speeds using numbers. The process of converting into a signal is performed, and the process of outputting to the control unit 102 is performed.
The control unit 102 acquires the speed signal and stores the speed signal in the storage unit 109. When an abnormality is detected, the control unit 102 executes the abnormality warning process, the theft warning process, and the theft notification process.

A case will be described in which the immobilizer 6 and the key cylinder 7 are used in the theft monitoring process when the accessory power is turned on or the ignition power is turned on. The control unit 102 monitors the signal from the immobilizer 6, the accessory power supply, and the ignition power supply, and although the immobilizer 6 cannot check the key,
When the accessory power supply or the ignition power supply by the rotation of the key cylinder 7 or the like is applied, it is determined to be theft, and theft prevention process is performed by performing the theft warning process and the theft notification process.

When it is determined that the device is stolen, the control unit 102 outputs a control signal for issuing a warning sound to the warning sound generator 103. The warning sound generator 103 carries out the sound processing of the buzzer 3. The sounding process may be performed by not only a warning sound of the buzzer 3 or the like, but also a process of outputting a warning using a siren or outputting a voice prompting theft prevention by a voice reproduction process. The control unit 102 also outputs a control signal for performing warning illumination to the illumination control unit 104. The lighting control unit 104 is
Lighting and blinking control such as blinking control of the LED 3 and the like is performed. The illumination processing may be performed not only for the LED 3 but also for flash illumination such as a flash, and a display for prompting theft prevention using a liquid crystal screen.

Further, when the control unit 102 determines that the theft has occurred, the control unit 102 displays information such as the date and time of the theft in the storage unit 109, the condition (trigger) for detecting the theft, the date and time when some event occurred, and the content of the event. The process of storing and the process of acquiring the telephone number of the theft monitoring center are performed. In addition, the mobile phone wireless device 101 is used to perform a call origination process to the phone number of the theft monitoring center. When the theft monitoring center receives an incoming call and shifts to a communication state, the control unit 102 recognizes the incoming call and transmits information such as the date and time of the theft recorded in the storage unit 109 and the condition for detecting the theft. The mobile phone wireless device 101 uses the mobile phone antenna 5 to perform a wireless communication process with a base station of a communication carrier, and to perform a data communication process after making and receiving a call.

At this time, in communication between the theft monitoring device 1 and the theft monitoring center, the output of the signal from the theft monitoring device 1 and the acquisition of the response signal to the signal are repeated to ensure reliable information transmission. You can figure out what. When the response signal cannot be acquired in response to the information transmitted from the theft monitoring device 1, the re-output process is performed, and the process is repeated until the response signal can be acquired.

If the response signal cannot be obtained for a certain number of times of output processing, re-output processing is performed. Alternatively, the line is disconnected and the call is made again. By reliably continuing the processing until the transmission processing is completed, it is possible to reliably transmit information.

The information to be transmitted includes the transmission condition of the theft monitoring processing such as the transmission by theft detection or the transmission by a predetermined event, the transmission date and time, the current position information, the past traveling history and the like.

The position information includes absolute position information such as latitude and longitude generated from the information received from the GPS receiver 105, a gyro sensor 106, and a speed pulse receiver 107.
Position information corrected by the information obtained from
Raw information that has not been subjected to data change processing such as correction information acquired from the PS receiver 105, gyro sensor 106, and speed pulse receiver 107, or position information that has been subjected to map matching processing can be considered. Also, GP
When outputting information from the S receiver 105, the gyro sensor 106, and the speed pulse receiver 107, it is necessary to perform map matching processing or the like on the side of the theft monitoring center to calculate the accurate position of the vehicle. Further, the travel history information can be realized by recording time information in the storage unit 109 together with past position information. When outputting the position information to the theft monitoring center, the control unit 102 acquires the traveling history data from the storage unit 109 and outputs the traveling history data using the mobile phone wireless device 101.

The data to be recorded indicates whether the theft report process has been completed normally, the transmission process could not be performed normally, or in what state the transmission was interrupted if the transmission process was not performed normally.
Further information analysis becomes possible by recording in detail the reason for interruption, the number of retries, the date and time for each history, and the like.

Further, the external device connection interface 108
An external device such as a personal computer can be connected to. When an external device (not shown) is connected and a signal requesting a theft history signal is obtained from the external device, the control unit 102 retrieves the theft notification history information and the like from the storage unit 109 and outputs the information via the external device connection interface 108. Output to an external device. By displaying the history information on the screen, the external device can grasp the date and time when the theft occurred, the factor that detected the theft, and the like. Communication between the external device and theft monitoring device 1 is performed by RS-232C communication, US
It can be realized by using a communication technology and a communication standard such as B.

Next, the flow chart of the theft detection processing of the control unit 102, the theft warning processing, and the processing up to the start of the theft notification processing is shown for each state in which the ignition power supply or the accessory power supply is on or off. Explain.

FIG. 2 is a flowchart showing the processing when the power supply from the vehicle battery 9 is started or when the control unit 102 is activated from the reset state. This process will be described from the state in which when the power supply from the vehicle battery 9 is started, the first power supply control unit 111 reduces the power supply voltage from the vehicle battery 9 and starts the power supply to the control unit 102. To do.

The control unit 102 is the second power supply control unit when the power is turned on or the reset process is performed.
The process of supplying power to 112 is started (step A1). The second power supply control unit 112 starts the process of supplying power to the immobilizer 6, the key cylinder 7, and the impact sensor 8 under the control of the control unit 102. Note that the control of the second power supply control unit 112 may not be control from the control unit 102, but may be control to automatically start power supply to the immobilizer 6 or the like when power is supplied from the vehicle battery 9. .

Further, the control unit 102 controls the key cylinder 7
The states of the ignition power supply and the accessory power supply output from the computer are monitored (step A2). If the power is not supplied, the power-off process is executed (step A3), and if the power is supplied, the power-on process is executed (step A4). The power supply can be monitored by monitoring either the ignition power supply or the accessory power supply, the logical sum of both signals, or the logical product of both signals.

FIG. 3 shows a control unit in a state in which the accessory power supply or the ignition power supply is being supplied.
3 is a flowchart showing the process of 102, that is, step A4 of FIG.

When the accessory power supply or the ignition power supply is supplied, the control unit 102 supplies power to the third power supply control unit 113, the fourth power supply control unit 114, and the fifth power supply control unit 115. A signal that permits is output (step B2). The third power supply control unit 113 supplies power to the mobile phone wireless device 101, and the fourth power supply control unit 114.
Supplies power to the warning sound generator 103 and the lighting control unit 104, and the fifth power supply control unit 115 supplies power to the GPS receiver 105, the gyro sensor 106, and the speed pulse receiver 107.

Further, the control unit 102 controls the immobilizer 6
The state of is monitored (step B3), and if the key can be verified, the monitoring process is continued. If the key cannot be collated even though the accessory power supply or the ignition power supply is on, it is determined to be theft, and the first theft warning process and the theft notification process are started (step B4).

The theft detection process is performed by the immobilizer 6
Alternatively, the output of another theft detection means, for example, the key cylinder 7 or the impact sensor 8 may be used. Further, the accessory power supply and the ignition power supply are also continuously monitored (step B5), and when both the power supplies are turned off, the third power supply control unit 113, the fourth power supply control unit 114, and the fifth power supply control unit. A control signal for stopping the power supply to 115 is output, and the process proceeds to a process when the ignition power supply and the accessory power supply are turned off (step A3 in FIG. 2).

FIG. 4 is a flowchart showing the processing of the control unit 102 when the accessory power supply and the ignition power supply are off. The control unit 102 sets interruption permission for detecting a change in a signal input from the immobilizer 6, the key cylinder 7, or the impact sensor 8 (steps C1, C2, C3). Further, an internal timer is set, and an interrupt permission for returning when the timer has passed a certain time is set (step C).
4). After that, the mode shifts to a low power consumption mode operating with a low-speed clock or a stop mode in which the clock is stopped (step C5) to reduce the power consumption and wait for the input of the interrupt signal set previously.

Next, a case where the timer has passed a certain time will be described. 5 to 7 are flowcharts showing the processing of the control unit 102 in the state of being restored by the timer. For example, when the timer is set to 1 hour or the like by the processing of the control unit 102, the timer outputs an interrupt signal to the inside of the control unit 102 after 1 hour has elapsed from the start of the timer. The control unit 102 returns to the normal operation by the interrupt signal. The control unit 102 is the fifth power supply control unit 1
A control signal for supplying power to 15 is output (step D1 in FIG. 5). The fifth power supply control unit 115 supplies power to the GPS receiver 105, the gyro sensor 106, and the speed pulse receiver 107.

By the power supply, the GPS receiver 105
Starts the operation, outputs the satellite information acquired from the GPS antenna 4 to the control unit 102, or generates position information based on the output information and outputs the position information to the control unit 102. The control unit 102 performs a process of storing the position information acquired from the GPS receiver 105 in the storage unit 109 (step D
2). The GPS receiver 105 supplies power to the antenna amplifier circuit provided inside the GPS antenna 4.
The power supply status to the antenna amplifier is grasped and the G
When an abnormality in the power supply to the PS antenna 4 is detected (step D3), it is determined that the GPS antenna 4 is stolen and the second theft warning process and the theft notification process are performed (step D6).

The gyro sensor 106 outputs angle information as a voltage value when the angle variation is confirmed in the power supply voltage range. When a voltage of 5 [V] is applied to the gyro sensor 106, the gyro sensor 106 outputs a voltage of about 2.5 [V] in a non-rotating state.
When it is detected that it has rotated further to the right, 2.5 [V]
To 5.0 [V] is output, and when it is detected that the motor rotates to the left, a voltage between 0 [V] and 2.5 [V] is output. The control unit 102 detects the change of the angle by inputting the level to which the reference voltage 5 [V] has changed, and performs the process of storing the change in the storage unit 109 (step D4). The speed pulse receiver 107 receives a signal indicating the number of rotations of the wheel mounted on the wheel, reduces the signal and processes the pulse signal to be shaped and corrected, or converts the signal into a speed signal using numbers or the like. The process is performed and the process of outputting to the control unit 102 is performed. The control unit 102 acquires the speed signal and stores it in the storage unit 109 (step D).
5).

The control unit 102 controls the information acquired from the GPS receiver 105 or the gyro 106 and the speed pulse receiver 1
The position information generated from the speed signal of 07 is stored in the storage unit 109.
A process of storing is performed (step D7). Furthermore, the control unit
102 is position information (1
(Step D, etc.)
8) If the position is misaligned, the position is misaligned even if the accessory power supply and the ignition power supply are not turned on, so it is determined to be theft, and the second theft warning process and the theft notification process are started (step D9). . If the position information is not shifted, it is determined that the position information is normal, and the state is shifted to the low power consumption mode, the stop mode, or the like, and the recovery after one hour is waited.

When the immobilizer 6 outputs a signal indicating abnormality (step E1 in FIG. 6), it outputs a signal indicating abnormality to the control unit 102. The control unit 102 returns to the normal operation by the signal, and executes the second theft warning process and the theft notification process (step E2). Similarly, when the impact sensor 8 detects a certain impact or more (step F1 in FIG. 7), it outputs a signal indicating that the impact is detected to the control unit 102. The control unit 102 returns to the normal operation by the signal, and executes the second theft warning process and the theft notification process (step F2). The control unit 10
The signal for returning 2 and shifting to the theft warning processing and the theft notification processing is the immobilizer 6 and the impact sensor 8
Alternatively, another means may be used. Further, by installing the impact sensor 8 on the glass of the vehicle or the like, it is possible to deal with theft or the like by breaking the glass of the vehicle.

FIG. 8 is a flow chart showing the processing of the control unit 102 which performs the theft notification processing and the theft warning processing.

If the control unit 102 determines that the theft has occurred, the third unit
The control shifts to the control of supplying power to the power supply control unit 113 and the fourth power supply control unit 114 (step G1). The third power supply control unit 113 supplies power to the mobile phone wireless device 101 according to a control signal from the control unit 102. In addition, the fourth power control unit 1
The controller 14 supplies power to the warning sound generator 103 and the lighting controller 104 in response to a control signal from the controller 102.

Further, the control unit 102 performs a process of recording information such as the date and time of the theft, the condition (trigger) for detecting the theft, the date and time of the event, and the content of the event in the storage unit 109 (step). G2), and then the process of acquiring the telephone number of the theft monitoring center is performed (step G3). Further, the mobile telephone wireless device 101 is used to carry out a call origination process to the telephone number of the theft monitoring center (step G4).

When the theft monitoring center receives an incoming call and shifts to a communication state, the control unit 102 recognizes the incoming call and sends information such as the date and time of the theft recorded in the storage unit 109 and the condition for detecting the theft ( In step G5), a device that detects the position, such as the GPS receiver 105, generates position information, and the position information recorded in the storage unit 109 is retrieved again via the control unit 102 (step G6). (Step G7).

The mobile phone radio 101 uses the mobile phone antenna 5 to carry out a wireless communication process with a base station of a communication carrier, and by the data communication process after making and receiving a call, the date and time, the calling condition, Send information such as location information. With the information transferred from the theft monitoring device 1, the theft monitoring center can immediately recognize the date and time of the theft and the conditions of the theft, and can also grasp the information of the stolen position, which is an emergency to the theft place. Dispatch or carry out processing to report to the police.

For the communication between the theft monitoring device 1 and the theft monitoring center, it is possible to grasp whether or not reliable information is transmitted by repeating the output of the signal from the theft monitoring device 1 and the acquisition of the response signal to the signal. can do. When the response signal cannot be acquired in response to the information transmitted from the theft monitoring device 1, the re-output process is performed, and the process is repeated until the response signal can be acquired.

The control unit 102 also gives a warning to the thief in order to suppress the theft. The control unit 102 outputs a control signal for emitting an alarm sound to the alarm sound generation device 103 (step G9). The warning sound generator 103 carries out the sound processing of the buzzer 3. The sounding process may be performed by not only a warning sound of the buzzer 3 or the like, but also a process of outputting a warning using a siren or outputting a voice prompting theft prevention by a voice reproduction process. Further, the control unit 102 outputs a control signal for performing warning illumination to the illumination control unit 104 (step G10). The illumination control unit 104 implements illumination lighting and blinking control such as blinking control of the LED 4 and the like. The illumination processing may be performed not only by the LED 4 but also by flashing illumination such as a flash, and a display for prompting theft prevention using a liquid crystal screen.

The switch 110 can turn on / off the theft warning process and the theft reporting process. The control unit 102 recognizes the on / off status of the switch 110, and when the switch 110 is in the on state. When a theft is detected, the theft warning process and the theft notification process are executed. On the contrary, when the switch 110 is in the off state, even if the theft is detected, the theft warning process, the process of not performing the theft report process are performed to perform vehicle maintenance, and when the user gets on the vehicle. It is possible to prohibit false theft notification processing.

In the above description, the theft monitoring device 1 is used.
Is a device that implements theft warning process (warning sound generator 10
3, the lighting control unit 104) and the device for carrying out the theft notification process (the mobile phone radio device 101), the theft monitoring device 1 carries out the theft warning process or the theft notification process. It may have any one of the devices for implementing.

[0070]

As is apparent from the above description, according to the present invention, the theft detection means for detecting the theft of a vehicle, and the theft warning for executing the warning processing when the theft detection means detects the theft of the vehicle. Means or at least one of a theft notification means for performing a notification process when a vehicle theft is detected by the theft detection means, a power source for the theft detection means, and at least one of the theft warning means or the theft notification means. By including a power supply control means for independently controlling the supply, the current consumption is reduced to prevent the battery from running down while the vehicle battery is not being charged, and theft warning processing is performed when theft is detected. Or to provide an anti-theft information device having an excellent effect that it is possible to surely perform at least one of the theft notification processing. It can be.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an anti-theft device according to an embodiment of the present invention,

[Fig. 2] When power supply is started from the vehicle battery,
Or a flow chart showing the processing when the control unit is activated from the reset state,

FIG. 3 is a flowchart showing the processing of the control unit when the accessory power supply or the ignition power supply is turned on,

FIG. 4 is a flowchart showing the processing of the control unit when the accessory power supply and the ignition power supply are off.

FIG. 5 is a flow chart showing the processing of the control unit in the state where it is returned by the timer,

FIG. 6 is a flowchart showing the processing of the control unit in the state where it is returned by the timer,

FIG. 7 is a flow chart showing the processing of the control unit in the state where it is returned by the timer,

FIG. 8 is a flowchart showing a theft notification process and a theft warning process of the control unit.

[Explanation of symbols]

1 Theft monitoring device 2 buzzer 3 LED 4 GPS antenna 5 Mobile phone antenna 6 immobilizer 7 key cylinder 8 Impact sensor 9 Vehicle battery 101 mobile phone radio 102 Control unit 103 Warning sound generator 104 Lighting control unit 105 GPS receiver 106 gyro sensor 107 speed pulse receiver 108 External device connection interface 109 memory 110 switch 111 First power control unit 112 Second power supply control unit 113 Third power control unit 114 Fourth power control unit 115 Fifth Power Supply Control Section

Claims (14)

[Claims] 1. A theft detection means for detecting theft of a vehicle,
At least one of a theft warning means for performing a theft warning process when a vehicle theft is detected by the theft detection means or a theft notification means for performing a theft notification process when a vehicle theft is detected by the theft detection means And a power supply control means for independently controlling power supply to at least one of the theft detection means and the theft notification means, and a theft prevention device. 2. The theft detection means is always supplied with power, and at least one of the theft warning means and the theft notification means is supplied with power when the theft detection means detects theft. The antitheft device according to claim 1. 3. The power supply control means supplies power only to the theft detection means when the battery of the vehicle is not charged because the engine of the vehicle is stopped, and charges the battery when the engine is started. 3. The antitheft device according to claim 2, wherein power is supplied to at least one of the theft warning means and the theft reporting means when the above is performed. 4. A control means for controlling the operation of at least one of the theft warning means and the theft notification means, wherein the power supply control means constantly supplies power to the control means. The antitheft device according to 1. 5. The control means is composed of a microcomputer, and when the battery of the vehicle is not charged due to the stop of the engine of the vehicle, it is controlled by software to operate with a low-frequency clock to reduce power consumption. The antitheft device according to claim 4, wherein the antitheft device shifts to a power mode or a stop mode for stopping a clock. 6. The microcomputer returns to a normal operation regardless of a power supply state when a signal for detecting theft is received in a state where the microcomputer is in the low power consumption mode or the stop mode, and a theft warning is issued. The antitheft device according to claim 5, wherein at least one of a process and a theft notification process is executed. 7. The anti-theft device according to claim 3, wherein the theft reporting unit is a mobile phone radio that executes a theft reporting process using a mobile phone network. 8. When the theft detection means detects theft, power is supplied to the mobile phone radio even when the vehicle battery is not charged due to the engine stop of the vehicle. The antitheft device according to claim 7. 9. A position detecting means for generating position information of the vehicle is provided, and the power supply control means sends a signal to the position detecting means when the battery of the vehicle is not charged due to the stop of the engine of the vehicle. The anti-theft device according to claim 1, wherein the power supply is cut off. 10. The antitheft device according to claim 3, 5 or 9, wherein the operation of the engine of the vehicle is determined by referring to the state of at least one of an ignition power source and an accessory power source of the vehicle. 11. When a signal that detects theft is received,
10. The anti-theft device according to claim 9, wherein power is supplied to the position detecting means even when the battery of the vehicle is not charged because the engine of the vehicle is stopped. 12. A position detecting means for generating position information of a vehicle is provided, and when the mode is shifted to a low power consumption mode, the power supply to the position detecting means is cut off and the power is supplied periodically. The antitheft device according to claim 5, wherein the position information is acquired and generated. 13. The position information is acquired and generated when power is periodically supplied to the position detection means, and it is determined that the position information is stolen if the position information is different from a predetermined position by comparison with the position information acquired in the past. The antitheft device according to claim 12, wherein at least one of the theft warning process and the theft notification process is started. 14. An anti-theft system comprising the anti-theft device according to any one of claims 1 to 13 and an anti-theft monitoring center that receives a signal informing of the theft from the anti-theft device.