JPH02237840A - Theft preventing system for automobile - Google Patents

Abstract

PURPOSE:To instantly detect a theft crime at a far place by radio transmitting an alarm from a transmission circuit and receiving said alarm by a remote alarm device and transmitting an alarm, when the theft crime is judged by the opening of a door after the judgement of the unmanned state of an automobile. CONSTITUTION:When each of release signals 35a and 35b is in OFF, a control circuit 3 in an on-vehicle mounted part A detects the stop of an automobile by a stop detecting circuit 1, and if a door opening/closing detecting circuit 2 detects the closure of all the doors, the control circuit 3 judges that the automobile is in unmanned state. When a driver taking a remote controller B is far from the automobile, if the opening of at least one door is detected by the detecting circuit 2, it is judged that theft arises, and an on-vehicle mounted alarm device 4 operates, and an alarm is radiotransmitted from a transmission/ receiving circuit 5, and the transmission/receiving circuit 6 of the remote controller B receives said alarm, and a remote alarm device 7 is operated. The alarm can he released by the operations of the operators 35a and 35b.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to an automobile theft prevention system, and is particularly effective in preventing theft of automobiles in which the door lock has been forgotten. This invention relates to an automobile theft prevention system that can instantly detect = from a distance from the automobile.

(1) Regarding the technology of Jubai in general, own! I! The ll4t is equipped with a door lock that locks the doors in the closed position to prevent theft of interior parts such as the car stereo, items left behind in the car such as cassette tapes and money, and the car itself when the car is left unattended. ing.

At least one of the door locks in ,: consists of a Schilling lock, which can be locked and locked by inserting and turning a key from the 4 [row]. The ll tablet can be turned to ``C''.

(c) Problems to be Solved by the Invention Leaving the car unattended without locking the door is self-taught! Illegal entry into jJlt, interior parts and +1
Drivers should not lock the doors when leaving the car, as this could lead to not only crimes such as theft of left behind items or running away from a car, but also crimes involving the use of a stolen car. This should be as enforced as removing the engine key.

However, in reality, it is not uncommon for drivers to let their guard down or get distracted by other things and leave the car without locking the doors.

Furthermore, as a result, if the driver is hit by a so-called car-target or tailgating accident, the occurrence of the attack will not be discovered until the driver returns to the place where the car was parked. Delays in the detection of crimes in this way not only make it less likely that crimes will be stopped or attempted, and that it will be difficult to discover and recover damaged goods, but will also make it more difficult for victims to find and recover stolen goods. This will make it even easier for the next crime to occur.

Particularly today, owners of cars left unlocked are held responsible for traffic accidents that occur when their cars are stolen. The present invention was developed in view of the current situation in the United States, and its objective is to prevent the theft of cars that have been forgotten to lock their doors. 12 It is an object of the present invention to provide an automobile theft prevention system which is effective and can immediately detect the initiation of theft at two locations away from the automobile.

(d) Means for Solving the Problems In order to solve the above-mentioned problems, the anti-theft system for Auto II according to the present invention detects when the car is unattended, and when a theft is initiated while the car is unattended. We have created an on-vehicle alarm that can be installed in a car when something is detected, and a remote alarm that can be taken out of the car by the car custodian or installed in a centralized IRL storage room. It is configured to support IJI.

That is, a stop detection circuit detects that the automatic engine is stopped, a door open/close detection circuit detects the open/close state of each door of the automobile, an output of the stop detection circuit, and an output of the l'a open/close detection circuit. and determine whether the first time all doors are closed, including at least one door that could not be opened before or after the engine stopped, the vehicle becomes unattended. t whether or not it was placed
ll, and if it is determined that the car is left unattended, then the occurrence of an unattended state f & whether or not a theft has started is determined by determining whether the door is opened first, and it is determined that theft has begun. A control circuit that outputs an alarm command when the alarm command is set to 1, an on-vehicle alarm that is mounted on the vehicle and issues an alarm based on the alarm command, a transmitting circuit that wirelessly transmits the alarm command to outside the vehicle, The configuration of the present invention will be explained in more detail as follows. It is.

First, the stop detection circuit detects that the car engine is stopped and responds to whether the engine is rotating or not.
(The structure may be such that it can be converted into an electric signal consisting of an elfW signal, for example an on/off M signal, and then output.

Therefore, as a stop detection circuit, for example, it is connected to the main TL source circuit of a car that is opened by a key switch, and when the main TL source circuit is closed and the input becomes H, the output becomes L. An inverter equipped with an inverter whose output is I { when the main power supply circuit is tapped and the input becomes 1,
Some options include one equipped with a switch that turns on and off depending on the displacement of the engine stop operation tool, and one equipped with a speed sensor that detects the rotational speed of the engine or propeller shaft.

Here, the engine stop operating tool may be any rubbing tool used for stopping the engine, and examples thereof include an engine key switch, a decombination lever, an engine stop switch, and the like. In the case of an engine key switch, it is possible to connect an inverter as described above and use the key switch itself as a switch for detecting engine stop operation, but for example, if It is sufficient to form a cam in advance and form a cam so that the cam 7 oror 1 that contacts the cam surface is interlocked to turn on and off the switch. Also, in the case of Dicomb River,
For example, when decombing is performed by pulling the decombination lever, a part of the decombination lever may come into contact with the switch to switch on/off. Furthermore, in the case of an engine stop switch, this switch can also be used as a switch for detecting an engine stop operation.

Switches that are turned on and off by displacement of the engine stop operating tool include limit switches, pressure-sensitive switches, etc.
The engine stop operation tool may be turned on and off by contact with the engine stop operation tool.
The amount of transmitted light or reflected light due to changes in the proximity switch and engine stop operating tool 1'''J,
A charging switch that switches on/off, a non-contact operation switch such as a photointerchanger, etc.
Furthermore, as a speed sensor that detects the rotational speed of the engine or propeller shaft, it is possible to use a rotational speed sensor used for engine fuel control and speed control, or a speed detection generator for an electric speedometer. can.

Among these, a configuration in which the key switch or the Ii engine stop switch is also used as a stop detection switch is advantageous in terms of simplifying and downsizing the circuit configuration.

Next, the door opening/closing detection circuit detects the opening/closing state of each door, detects whether at least one door is open, converts it into a binary signal corresponding to opening/closing, for example, an on/off signal, and outputs it. It is sufficient if the configuration is as follows.

Therefore, the door opening/closing detection circuit is? By inputting the output of each V door switch that can be switched individually depending on the opening and closing of the iY door, and the output of each door switch, it is determined whether at least one door is open or not. It is composed of a determination circuit that outputs a door open signal when it is determined that the door should be opened. This judgment circuit can be composed of an addition circuit that adds the outputs of the famous λ inch, and a comparison circuit that compares the addition result with a reference voltage and outputs the judgment result6 (7). while reducing the number of components and simplifying the circuit configuration.
In the second case, it is advantageous to use an I error logic circuit such as an AND circuit or an OR circuit as the determination circuit.

Next, the control circuit is configured such that the control circuit repeatedly operates according to a program that is repeated at a predetermined period, and the control circuit is configured to operate repeatedly according to a program that is repeated at a predetermined period, and all doors including at least one door that have been opened from or after the engine stop song are opened. Determine whether the car has been left unattended by determining whether the first time lτ is closed. and an unoccupied state determination unit that determines whether or not a theft has started by determining whether or not a door is burgled for the first time after the occurrence of an unoccupied state when it is determined that the vehicle is left unattended. It is composed of a young thief determining section and an alarm command generating section that outputs an alarm command when it is determined that a theft has begun.

Unmanned! ! ! The judgment department decided whether or not the heroic state was established. l+, and the determination result is represented by a flag signal, for example, whether the flag signal corresponding to the output of the door shoulder jump detection circuit, which is input to the turn when the engine is rotating, matches the initial value. Illt
l A flag flI constant section, a flag reset section that replaces the flag signal 3''; A door status determination unit determines whether at least one door is closed or closed based on the output of the stop detection circuit, and a flag is set when the door status determination unit determines that all doors are closed. A set-side flag f determining unit that determines whether the signal matches the initial value or is a cup; and a flag setting unit that converts the flag Igo number to an inverted value W1 when the flag signal matches the initial value in this flag determining unit. Equipped with

In addition, the theft initiation determination unit determines whether an unattended state has been established before the engine stop and at least one door is opened. It is configured to fully determine whether or not a move has been made. That is, the theft initiation tlI determination section, for example, determines whether the flag signal matches the inverted value of 1 when the engine stop determination section and the door state determination section mentioned above match at least one door when the engine is stopped. and a previous state determination unit that determines whether or not to do so.

Further, the alarm command generation section may be configured to generate an alarm command based on the output of the theft initiation determination section when the theft initiation determination section determines that theft has begun. As the alarm command, a continuous voltage correction signal of a predetermined voltage, a one-shot pulse signal, a predetermined frequency signal, a pulse width signal, etc. can be used.

-1. The on-board alarm device is only required to be installed in one vehicle and configured to issue an alarm based on an alarm command.
The warning may be an auditory warning or a visual warning (j). Examples of alarms that issue an audible alarm include the use of an audio output device that alerts the surrounding area that a theft has begun, or the use of a car horn. A vehicle's lighting system can be used as an alarm to emit an alarm.When using both an alarm and a lighting system, the lighting system turns on at the same time that people around hear the alarm sound, making it difficult for the affected vehicle to be seen by other vehicles. Since it can be identified from a car at a glance, it becomes even more advantageous for people nearby to identify the occurrence of damage.

- The transmitting circuit may be configured so as to be able to appropriately wirelessly transmit the alarm command to the outside of the vehicle. This modulation method is not particularly limited,
For example, various known modulation methods such as an amplitude modulation method, a frequency modulation method, and a pulse code modulation method can be employed.

The receiving circuit only needs to be capable of receiving and demodulating the radio waves output from the transmitting circuit and reproducing the alarm command, and a method corresponding to the modulation method of the transmitting circuit is adopted as the demodulation method.

The remote alarm device may be configured to issue an alarm based on the alarm command demodulated by the receiving circuit, and may be configured, for example, by a sound generation circuit or an alarm device such as a buzzer. Also,
It is also possible to incorporate the remote alarm together with the receiving circuit in one portable case. Further, the alarm issued by the remote alarm is not particularly limited, but it is advantageous to configure it to issue an audible alarm that does not require the driver to concentrate on the alarm while carrying the remote alarm.

For example, when a land transportation company such as a taxi, bus, or truck centrally manages a large number of vehicles, it is possible to alert them to the onset of theft and to check which vehicles are being damaged. In order to deal with such concentrated pipe burying, the transmitting circuit is configured to wirelessly transmit 3 an identification signal 5 for identifying the damaged vehicle together with an alarm command, and the receiving circuit is configured to wirelessly transmit an identification signal 5 for identifying the damaged vehicle. It is only necessary that the remote alarm be configured to change the alarm operation in response to the identification signal.In this case, the remote alarm alarm operation needs to be equipped with an ability to identify the victim vehicle. P) For example, the remote alarm may include an alarm and a display section that displays an identification display corresponding to the identification number, and the receiving circuit may operate the alarm at a certain level based on the alarm command. While controlling the system to emit a warning sound, it also controls the display section of the damaged vehicle to display an identification display corresponding to the identification signal, or configures a remote alarm with a horn, so that the receiving circuit receives the warning command. Based on this, it is conceivable to configure the pitch of the alarm sound emitted by the alarm device and its intermittent state to be different depending on the signal a. In the present invention, furthermore, in order to stop the operation of the I-1 alarm and remote alarm that have been activated, or to enable the I-I alarm when the driver or the custodian opens the door of the car that has been left unattended. A release circuit may be provided to disable the thief-initiated portion of the control circuit so that the device and the remote alarm can be opened without activation.

The operating tool for operating this release circuit may be mounted on the vehicle or may be provided separately from the vehicle. If an operating tool for operating the release circuit is provided separately from the automatic mode, a J.
:9 A release transmitting circuit that wirelessly transmits an emitted corner removal signal to the vehicle, and a release receiving circuit that is mounted on the vehicle, receives the release signal wirelessly, and operates the release circuit based on the release signal.

<e) Effect According to the present invention, after the engine is stopped, when it is detected that a door that was already open when the engine was stopped or a door that was opened after the engine was stopped is closed, the control circuit stops the vehicle. considered to be left unattended.

And the entire system will be affected by this if the theft is initiated.
J: The preparation for combining the alarms is completed, so to speak, the state is set. Thereafter, when any one door is opened, the control circuit assumes that a theft has been attempted and outputs an alarm command. When the W alarm command is output, the on-vehicle alarm goes off! I! A remote alarm is triggered based on an alarm command transmitted via a transmitter circuit and a receiver circuit. Therefore, by activating an alarm at a crime scene, there is an increased possibility that the criminal will be urged to stop committing the crime, or that people nearby will catch the criminal and stop the crime from being attempted. In addition, since the driver or custodian who is away from the car can immediately know that a theft has begun, it is possible to arrive at the crime scene, discover the damage, and report to the I-inspector's office faster.

,: On the other hand, when the driver or custodian gets into the car, the above-mentioned cent state can be avoided using a portable release circuit (M release device) or a release circuit (release device) installed at a specific location on the car. As a result, even if the driver or custodian opens the door, the alarm will not be emitted.In this case, even if the receiver and remote alarm are inserted into the portable release device, the alarm will not be emitted. It's good.

(f) Example Hereinafter, an example of the present invention will be described in detail based on the drawings. However, the present invention is not limited thereto. It is a Pronk circuit diagram showing the configuration of the device. As shown in the figure, the damage prevention device for this automatic ITi consists of an in-vehicle component A installed in the automatic 1'ft, and a remote control (hereinafter referred to as remote control) B installed outside the vehicle.
The JR mounting section 8 includes a stop detection circuit 1, a door opening/closing detection circuit 2, a control circuit 3, an rrL'R alarm 4, and a transmitting/receiving circuit 5, and the remote control B includes a transmitting/receiving circuit 6 and a remote control circuit 1.
Alarm 7 and 9 are twisted.

For example, as shown in FIG. 12, the stop detection circuit 1 detects that the engine of the automobile is stopped, and
It is configured so that it can be converted into a binary signal corresponding to the presence or absence of rotation of the pump, for example, an electric signal consisting of an on/off signal and output.

FIG. 2 is a circuit diagram of the stop detection circuit 1 used in this embodiment. As shown in the figure, the - stop detection circuit 1 is connected to the main power supply circuit 12 of the automatic market which is closed by the key isochi 11, and outputs when the main power supply circuit 12 is closed and the input becomes H. becomes ■, and the main power circuit 12
The inverter 13 has an inverter 13 whose output becomes H when the input becomes 1 when the inverter 13 is opened.

Further, the door opening/closing detection circuit 2 detects the opening/closing state of each door, detects whether at least one door is open, and generates a binary signal corresponding to the opening/closing, as shown in FIG. 3, for example. , for example, is configured to be converted into an on/off signal and output.

FIG. 3 is a circuit diagram showing the configuration of the door opening/closing detection circuit 2 used in a practical example of J.
The door opening/closing detection circuit 2 includes door switches 21a to 21c that are individually switched depending on whether each door is opened or closed, and a control circuit 22 to which the door switches 21a to 21c are connected.

Each of the door switches 21a to 21e is configured to turn off when the door is pressed and turn on when the door is opened. and #, it is composed of an OR circuit that determines whether one door is open or not, and outputs a door 11 signal consisting of an ON signal when t1 is determined that at least one door is open. There is.

For example, as shown in FIG. 6, the control circuit 3 is configured to operate repeatedly according to a program that is repeated at a predetermined period "c," and receives the output of the stop detection circuit 1 and the output of the door opening/closing detection circuit 2. , determining whether the motor vehicle is left unattended by determining whether the first time all doors are closed, including at least one door opened before or after the engine has stopped; If it is determined that the car is left unattended, it is determined whether or not a theft has begun by determining whether or not the door opens for the first time after the occurrence of an unoccupied state, and the theft is determined to have started. It is configured to output an alarm command when it is determined to be 1!.

In addition, this control circuit 3 cancels the operation of the stolen vehicle f'=determining section before the driver or keeper of the vehicle opens the door, and prohibits the issuance of the 'II alarm command in advance, or It is now possible to cancel the issuance of a warning command.

Figure t shows the v of the control circuit 3 used in this embodiment.
It is a block circuit diagram schematically showing the J-X. As shown in the figure, this control circuit 3 is connected to the output of the stop detection circuit 1 which was input this time and the door opening/closing detection circuit 2 which was input this time.
The output of the stop detection circuit 1 and the output of the door opening/closing detection circuit 2 are inputted to a storage unit 34 that stores a flag signal whose signal value is inverted depending on whether an unattended state is established, f′. an unmanned state determining unit 31 that determines whether the vehicle is left unattended by determining whether or not all doors including at least one door are closed for the first time; and an unmanned state determining unit 31 When it is determined that the car is left unoccupied, it is determined whether or not the door is opened for the first time after the occurrence of an unoccupied condition. 1.C+Theft target determination unit that determines whether there is a young person committing theft. 32 and the theft begins! an alarm command generating section 3 that outputs an alarm command when fI+ is determined in the fixed section 32 that a theft has been initiated;
3 and a release circuit 35.

The unmanned state determination section 31 is configured to determine whether or not an unmanned state has been established, and to represent the determination result as a flag signal, as shown in FIG. 5, for example.

FIG. 5 is a block circuit diagram showing the configuration of the control circuit 3 more physically. As shown in the figure, the unmanned state determination unit 31 includes a stop tri determination unit 31a that determines whether or not the engine is stopped, and an output of the door opening/closing detection circuit 2 that is inputted seven times during engine rotation. The Nananoto side flag determination unit 31b determines whether or not the corresponding flag signal matches the initial value (here, 0), and if the flag signal does not match the initial value l2 when the engine is rotating, the flag signal is set to the initial value. A flag reset unit 31c replaces the flag reset unit 31c, and a door status determination unit 3id determines whether at least one door is open based on the output of the stop detection circuit 1 input this time when the engine is stopped. , a set-side flag determination section 31e that determines whether the flag signal 5' matches the initial value when the door state determination section 31d determines that all doors are closed. A flag sensor unit 31f is provided which replaces the flag signal with an inverted value (here, 1) when the flag signal g matches the initial value in 31e.

The theft initiation determining unit 32 determines whether or not an unattended state has been established before the engine stop and at least one door being opened, thereby determining whether or not the theft has been initiated. It is configured to determine the presence or absence.

That is, for example, as shown in FIG.
The engine stop fq determination unit 31a and the door state determination unit 31d determine whether or not the flag signal matches the inverted value when at least one door is open when the engine is stopped. It is provided with a moe same state frI fixed part 32a.

Further, the alarm command generating unit 33 generates an alarm based on the output of the theft attempt determining unit 32 when the theft attempt determination unit 32 determines that theft has begun and the operation of the release circuit (device) 35 is stopped. The device is configured to generate an alarm command.

As an alarm command, it is possible to use a continuous voltage signal of a predetermined voltage, a one-shot pulse signal, a predetermined frequency {1τ signal, a pulse width signal, etc. However, in order to simplify the circuit configuration, the alarm command generating section 33 is configured to output a continuous voltage signal of a predetermined voltage as an alarm command.

The release circuit (release device) 35 is turned on and off by operating an operating tool 35a mounted on the vehicle or an operating tool 35b provided on the remote control Bl.

Once turned on and activated, the flag signal is replaced with an initial value when there is an output from the theft initiation determining section 32, so that the alarm command generating section 33 is not activated. On the other hand, as mentioned above, the release circuit (device) 3
5 is stopped, an alarm command is generated based on the output 1 of the theft initiation determining section 32.

Although not shown, the control circuit 3 further includes a ROM that stores a control program, and a central processing unit (CPU) that controls the operation of each part of the control circuit 3 according to the control program. and a clock generator that generates a clock signal that serves as a timing reference for control operations.

Figure 6 is a 7-row diagram of the control program. As shown in the figure, this control program is initialized (
After performing step S1), the program moves to a program that is repeatedly executed. At this initialization stage (S1), a flag signal 20 is set.

After that, data such as the output of the stop detection circuit 1 and the output of the door opening/closing detection circuit 2 are read and stored in the storage section 34 (S
2) Thereafter, the stop determination unit 31a″c determines whether the engine has been stopped based on the output of the stop detection circuit 1 read from the storage unit 34 (S3).

While the engine is running, a negative answer is given at this stage to determine whether the flag signal is at its initial value (S
4), if it is different from the initial value, replace the flag signal with the initial value (S5), and if it is the same, continue reading the data. Return to floor (S2).

If it is determined that the engine is stopped, the storage unit 3
Based on the output of the door opening/closing detection circuit 2 read this time from 4, the door state determining unit 31d''C↑ determines whether at least one door is lIlih* (S6).

If all the doors are closed, a negative answer is obtained at this stage, and after this, by determining whether the flag signal is the same as the initial value, it is possible to determine whether the flag signal is the same as the initial value or not. It is determined whether this is the first time (S7)
. If the door is detected for the first time after the engine has stopped, it is assumed that the unattended state has been established, and after an affirmative circuit is given at this stage, After replacing the lag signal with an inverted value (S8), the process returns to the data reading stage (S2). Also, when the detection of all doors being closed is repeated after the engine has stopped.
If 1>, the flag signal has already been replaced with the inverted (value), so the process returns to the data reading stage (S2).

If tr+ is determined that the engine is stopped (S3), and at least one door is open I1, a T affirmative circuit is obtained for the determination by the door state determining section 31d (S 6 ). Then, by determining whether or not the value of the flag signal has been replaced with an inverted value, it is determined whether or not the door was opened in an unattended situation (S9). If the unmanned state has not been established yet, for example, if the engine is stopped with the door open and the door is not closed yet, the process returns to the data reading stage (S2). However, if the unmanned state has already been established, the flag signal has already been replaced with an inverted value, so an affirmative answer is given at the first stage. If an affirmative answer is given, it is further confirmed that the release circuit 35 is not activated (SlO), and then the alarm command generator 33 is activated and an alarm command is output ( S1
1), The output of the alarm command is executed repeatedly or continuously until the release circuit 35 is activated, and when the release circuit 35 is activated, the flag signal is replaced with the initial value. Then (S12), the process returns to the data reading stage (S2). , is configured to wirelessly transmit to the outside of the vehicle from a Ranoo broadcast receiving antenna installed in the vehicle, and is configured to demodulate the release command transmitted from remote control B and switch the release circuit 35 to the operating state. Touch 6 The above remote control Bl. : The transmitting/receiving circuit 6 provided is such that the transmitting/receiving M unit 5 of the vehicle-mounted part A outputs l. ? The remote alarm device 7 is configured to receive one alarm command without any interference and activate the remote alarm device 7 based on the alarm command obtained by demodulating the remote controller B.
The in-vehicle alarm 4 described in F is configured to modulate and wirelessly transmit a cancellation command issued by operating a release operation operating tool 35l) provided in the The alarm 4 may be configured to emit an alarm, and here, the alarm 4 is configured by a horn 4a and a light circuit 413 installed in the automobile.

Further, the remote alarm device 7 includes a buzzer 61 that generates a PT alarm sound based on an alarm command.

Although not shown in the drawings, the remote control B is small enough to be placed in the chest pocket of a shirt, for example, and has a built-in microcell as a driving power source.
This drive? Equipped with a power switch for turning on and off the power source.

Further, the vehicle control portion A of this vehicle anti-theft system may be used, for example, when a vehicle is being vehicle-mounted. tt r. - Using a battery as a driving power source, it is designed to operate at all times, regardless of whether the main power circuit is turned on or off, similar to a clock installed in a car.

In this car anti-theft device, when the engine is stopped and all doors that are open at this time or doors that have not been opened at this time are closed, the control circuit determines that an unattended state has been established and a flag signal is issued. 1, and the control circuit 3 enters the set state. If the door is broken into while this state is maintained without being released, the control circuit 3 determines that a theft has begun and outputs an alarm command. Based on this alarm command, the in-vehicle alarm 4 is activated, the horn 4a is sounded, and each light in the light circuit 4b is turned on or flashed to issue an alarm to the surrounding area. On the other hand, the alarm command is transmitted to the remote alarm 7 via the transmitter/receiver circuits 5 and 6, and the remote alarm 7 sounds to give an alarm to the operator carrying the lift B. As a result, the criminal may stop committing the crime for fear of being arrested, or people around the car may notice the alarm and kill the criminal, or report the crime to the police, etc., and prevent the attempted crime from continuing. This can prevent theft. In addition, by activation of remote alarm 7 of remote control B,
The driver or custodian can immediately know that there is a risk of damage occurring at the same time that the theft begins earlier than the time when the crime occurred, and they can immediately rush to the crime scene and arrest the culprit with a number. If you witness the perpetrator or report the incident to the police, etc. As a result, it becomes easier to prevent damage from occurring, arrest the culprit, and recover from the damage that has occurred.

Modes for carrying out the present invention are not limited to the modes shown in the above-mentioned embodiments, and various modifications may be made without departing from the constituent features of the present invention, for example, as described below. Alternatively, it is possible to make corrections.7 First, the stop detection circuit 1 detects that the engine of the driver is stopped, and detects it from a binary signal corresponding to whether or not the engine is rotating, such as an on/off signal. It is sufficient if it is configured so that it is converted into an electric signal and output as follows, for example, 1r.
, those equipped with a switch that is turned on and off by displacement of an engine stop operating tool, those equipped with a speed sensor that detects the rotation speed of the engine or propeller shaft, etc. are added.

Here, the engine stop operating tool may be any operating tool used for stopping the engine, such as a Gonjin key switch, a decombination lever, an engine stop switch, etc. In the case of an engine key switch, it is possible to connect an inverter as in the above embodiment and use the key switch itself as a switch for detecting engine stop operation. , and the switch is configured so that the switch is turned on and off by operating the sliding part of the swing in conjunction with the lower of the cam 7 that contacts the cam surface, or by directly operating the rubbing part of the cam surface.

In the case of a decompression lever, for example, a switch may be provided that is turned on and off by a portion of the decompression lever coming into contact with the decompression lever when the decompression lever is pulled to hit a defump. Furthermore, the engine stop switch tL Taikawa Kokeko's switch can also be used as a switch for detecting the engine stop operation.

The switch that is turned on and off by the displacement of the engine stop operating tool may be a limit switch, a pressure sensitive switch, etc., which can be switched on and off by contacting the engine stopping operating tool, without touching the engine stop operating tool. Proximity switches that are turned on and off due to changes in magnetic flux density due to their displacement, and changes in the amount of transmitted light or reflected light due to changes in the engine stop operation tool: Non-contact operation type switches such as charging switches that switch on and off, photointerrupters, etc. In addition, as a speed sensor that detects the rotational speed of the engine or propeller shaft, the rotation speed sensor used for fuel control and speed control of Yunjin, or the power generation iso for speed detection of the electric speedometer. Can be used for both purposes. Among these, as in the above embodiment, the key switch is also used as a stop detection switch, or the engine stop switch is also used as a stop detection switch, which simplifies and downsizes the circuit configuration. It will be advantageous in terms of planning.

Next, the door opening/closing detection circuit 2 detects the opening/closing state of each door, detects whether at least one door is open, and converts it into a binary signal corresponding to opening/closing, for example, an on/off 7 signal. It suffices if the configuration is configured so that it can be output.

Therefore, as the door opening/closing detection circuit 2, each door switch notch 21a=21e is provided, which is individually switched and operated by opening and closing each door.
The configuration of the constant circuit 22 may be different from the embodiment described in J. That is, each door switch is configured so that it is turned off when the door is opened and turned on when the door is closed, and a configuration in which a trI constant circuit 22 consisting of an AND circuit is provided, and the output of each door switch 21a...21e is A configuration may be considered in which a determination circuit is provided which includes an addition circuit that performs addition and a comparison circuit that compares the addition result with a reference voltage and outputs a determination result. However, in terms of reducing the number of circuit components and simplifying the circuit configuration, it is advantageous to use a semiconductor IF circuit such as an AND circuit or an OR circuit as the determination circuit 22.Next, the control circuit 3 is configured to operate repeatedly according to a program that repeats at a predetermined period; the first time all doors are closed, including at least one door opened since engine stoppage or engine stoppage; By determining the presence or absence of tlI, it is possible to determine whether the car is left unattended or not. Then, if it is determined that the car is left unoccupied, the presence or absence of the three doors that are opened first after the occurrence of the unoccupied condition is determined by N, thereby determining whether or not a theft is initiated. , it is only necessary that the system be configured to output an alarm command when it is determined that a theft has been initiated.
The collective control program and circuit configuration can be changed as appropriate. For example, instead of using a flag signal, a circuit configuration may be considered that uses a 7-rip, 7-lop circuit to switch between set and 7-in-1 of the control circuit 3.

The in-vehicle alarm 4 described above may be installed in a car and configured to issue an alarm based on an alarm command.
It is also possible to install a separate warning device such as a buzzer or siren.

As in the first embodiment described above, when the automobile horn 4a and light circuit 4b are used, the increase in the number of parts can be kept to a minimum, and it can be implemented at low cost.

Also, when using the alarm horn 4a and the light circuit 4b {
In addition, as soon as the surrounding people hear the alarm sound, the lighting system turns on and the damaged vehicle can be visually identified from the parked car, giving the surrounding people an advantage in identifying the damaged vehicle. .

The transmitting/receiving circuits 5 and 6 may be provided separately into a portion having a transmitting function and a portion having a receiving function. Further, the modulation method and demodulation power method of these transmitting/receiving circuits 5 and 6 are not particularly limited. For example, an amplitude modulation method,
The remote IF signal 7 is a receiving circuit that can employ various known modulation methods such as frequency modulation and pulse code modulation. It is sufficient that the structure is configured to issue an alarm based on a warning command, such as using a warning device such as a buzzer, using an alarm lamp that issues a warning with a flashing or lighting display, or 1i It is conceivable to use these. l7
However, it is most advantageous to configure the alarm with a horn that provides an audible warning that does not require the driver to focus his attention on the alarm while carrying it.

In the above embodiment, the transmitting/receiving circuit 6, the remote alarm 7
etc. are incorporated into one portable remote control B, but this one is not essential to the present invention; for example,
If you are transporting a large number of vehicles such as taxis, buses, trucks, etc., a remote alarm 7
For example, a warning horn and a CR displaying the damaged vehicle. It is possible to configure T display device and f'.

When a large number of cars are buried in a concentrated manner, the remote alarm 7 is activated to warn of the start of theft. It is necessary to collect information so that it can be confirmed whether damage is occurring to the vehicle.9 When dealing with such centralized management,
The transmitting circuit 5 is configured to wirelessly transmit an identification signal for identifying the damaged vehicle to the alarm command driver, and the receiving circuit 6 is configured to change the alarm operation of the remote alarm 7 in response to the identification signal. It is sufficient if it has been fL. In this case, remote! ! E. For the alarm activation of the device 7, it is necessary that the remote alarm device 7 is equipped with the ability to distinguish between the damaged vehicles. , while the receiving circuit 6 controls the alarm so that it emits a certain alarm sound based on the alarm command,
The display section of the damaged vehicle may be configured to display an identification display corresponding to the identification signal, or the remote IF alarm 7 may be configured as a warning alarm, and the receiving circuit 6 may be configured to display an identification display corresponding to the identification signal. It is conceivable that the sound pitch of the warning sound and its intermittent state may be configured to differ depending on the identification signal.However, when the driver or the custodian gets into a car, a portable release circuit (release A release circuit (release device) 358 or a release circuit (release device) 35 installed at a specific location on the vehicle releases the above-mentioned set state, that is, the O7 state, thereby allowing the driver/custodian to open the door. Even if the alarm is raised,
Therefore, they can get in and drive a car. In this case, a portable release circuit (release device)
Incorporate a receiver and remote alarm into 35 (22 is good.

In other words, the release circuit (release device) 35 is operated by an operating tool 35a mounted on the vehicle or 1. It is turned on and off by operating the operating tool 35}l provided on the remote control unit B.

Once turned on and activated, the flag signal is replaced with an initial value when there is an output from the theft initiation determining section 32, so that the alarm command generating section 33 is not activated. Ichiriki, as mentioned above, release circuit (device) 35
The device is configured to issue an alarm command based on the output of the theft initiation determination section 32 when the operation of the theft determination section 32 is stopped.

By turning on and off the release circuit (M removal a) 35 in this manner, the adjustment is completed.

(g) Effects of the Invention As explained above, according to the present invention, after the engine is stopped, the door that was already open when the engine stopped or the door that was opened when the engine stopped is closed. If it does not detect that the vehicle has been stolen, it assumes that the car is in a closed state, and if any one door is subsequently opened, the control circuit assumes that a theft has been initiated. Output an alarm command, l1. Onboard alarms and remote alarms are arranged to be activated. Therefore, when a burglary occurs, the crime scene alarm is activated, prompting the criminal to stop the crime, or when the criminal is caught and restrained by people nearby, and the crime is put to rest. The possibility of being stopped is increased, and it is possible to prevent theft from aiming at the car or stealing from the car.Furthermore, since the start of the theft is immediately notified to the driver or the person who is away from the car, it is possible to prevent theft. This can speed up the arrival of the perpetrator or custodian at the crime scene, make it possible to catch the criminal red-handed, speed up the discovery of damage, report to the police, etc.
This can facilitate the arrest of the culprit and the discovery and recovery of damaged goods.

On the other hand, when the driver or custodian gets into the car, a portable release device (release circuit) or 1.1: A release device (release circuit) installed at a specific location on the car can be used to remove the above-mentioned set. The state is divided by M, that is, the state is set to OFF, so that even if the driver or custodian opens the door, no alarm is issued, and therefore the driver or custodian gets into the car and starts driving. In this case, the receiver and remote alarm may be included in a portable release device (release circuit).

[Brief explanation of drawings]

FIG. 1 shows the configuration of an automobile theft prevention device according to an embodiment of the present invention [block circuit diagram, fIS2 diagram is a circuit diagram of a stop detection circuit 1 used in this embodiment, and FIG. FIG. 4 is a circuit diagram showing the configuration of the door opening/closing detection circuit 2 used in this embodiment. FIG. 4 is a Bronnoch circuit diagram schematically showing the configuration of the control circuit 3 used in this embodiment. FIG. 6 is a block diagram showing the VT configuration of the control circuit 3 in a more detailed manner, and is a 7-row diagram of the control program. 1... Stop detection circuit, 2... Door leap detection circuit, 3
...control a circuit, 4...* mounted alarm device, 4a...deaf sound device,? b...Light circuit, 5...Transmission/reception A J circuit,
6... Transmission/reception i circuit, 7... Remote alarm, 11...
Keith inch, 12... Main'yl source circuit, 13...
Inverter, 21a-/21e...Door switch/chi, 2
2...f++ constant circuit, 31...unattended state ↑1 constant part,
31+i...Ennn stop 1'■II fixed part, 311)
...Recenote WI flag flI fixed part, 31e...Flag reset part, 31d...Door shape=judgment part, 31e
. . . Set side flag determination section, 31f . . . Flag sensor unit, 32 .
35...Release circuit. 1...Stop detection circuit 2...Door opening/closing detection circuit 11...Key inch 12...Main power supply circuit 13...Inverters 21a to 21e...Door switch 22...Judgment circuit Fig. 2 Figure 3

Claims (20)

[Claims] (1) Input the stop detection circuit that detects that the car engine is stopped, the door open/close detection circuit that detects the open/close status of each door of the car, the output of the stop detection circuit, and the output of the door open/close detection circuit. and determining whether the vehicle is left unattended by determining whether the first time all doors are closed, including at least one door opened before or after the engine has stopped. However, if it is determined that the car is left unattended, it is determined whether or not theft has begun by determining whether or not the door is opened for the first time after the occurrence of the unattended state, and it is determined that theft has begun. A control circuit that outputs an alarm command when an alarm occurs, an on-vehicle alarm installed in the vehicle that issues an alarm based on the alarm command, a transmitting circuit that wirelessly transmits the alarm command outside the vehicle, and a wireless reception of the alarm signal outside the vehicle. An automobile theft prevention system is equipped with a receiving circuit that issues an alarm based on an alarm command received by the receiver, and a remote alarm that issues an alarm based on an alarm command received by the receiver. (2) The above-mentioned stop detection circuit is connected to the main power circuit of the automobile, which is opened and closed by a key switch, and when the main power circuit is closed and the input becomes H, the output becomes L, and the main power circuit is opened. 2. The automobile theft prevention system according to claim 1, further comprising an inverter whose output becomes H when the input becomes L. (3) The automobile theft prevention system according to claim 1, wherein the stop detection circuit includes a switch that is turned on and off by displacement of an engine stop operating tool. (4) Claim 1, wherein the stoppage detection circuit includes a speed sensor that detects the rotational speed of the engine or propeller shaft.
The automobile anti-theft system described in . (5) The door opening/closing detection circuit inputs the output of each door switch, which is individually turned on and off by the opening/closing operation of each door, and determines whether at least one door is open. The automobile theft prevention system according to any one of claims 1 to 5, further comprising a determination circuit for determining the vehicle's theft. (6) The automobile theft prevention system according to claim 5, wherein the determination circuit is constituted by a semiconductor logic circuit. (7) The control circuit is configured to repeatedly operate according to a program that is repeated at a predetermined cycle, and corresponds to the output of the stop detection circuit, the output of the door opening/closing detection circuit, and the establishment of an unattended state, which are input this time. a storage unit that stores a flag signal whose signal value is inverted when the engine is stopped; and a storage unit that determines whether or not all doors including at least one door opened before or after the engine stopped are closed for the first time. an unmanned state determination unit that determines whether or not the vehicle is left unattended, and if it is determined that the vehicle is left unattended, determines whether or not a door is opened for the first time after the unattended state occurs; 2. The vehicle theft prevention device according to claim 1, further comprising: a theft initiation determination unit that determines whether or not a theft has been initiated; and an alarm command generation unit that outputs an alarm command when it is determined that a theft has been initiated. system. (8) The unmanned state determination unit includes an engine stop determination unit that determines whether the engine is stopped based on the output of the stop detection circuit input this time, and door opening/closing detection that was input last time when the engine was rotating. A reset-side flag determination unit that determines whether the flag signal corresponding to the output of the circuit matches the initial value, and a flag reset that replaces the flag signal with the initial value if the flag signal does not match the initial value when the engine is rotating. a door status determination unit that determines whether at least one door is open based on the output of the stop detection circuit input this time when the engine is stopped; and a door status determination unit that determines whether all doors are closed. A set-side flag determination unit that determines whether the flag signal matches the initial value when it is determined that the flag signal matches the initial value, and a set-side flag determination unit that replaces the flag signal with an inverted value when the flag signal matches the initial value. and a flag setting unit, wherein the theft initiation determination unit includes the engine stop determination unit, the door state determination unit, and the flag signal matches an inverted value when at least one door is open when the engine is stopped. The automobile theft prevention system according to any one of claims 1 to 6, further comprising a previous state determining section that determines whether or not the vehicle is to be stolen. (9) The automobile theft prevention system according to any one of claims 1 to 8, wherein the on-vehicle alarm is constituted by an alarm of the automobile. (10) The vehicle anti-theft system according to any one of claims 1 to 9, wherein the vehicle-mounted alarm comprises a horn and a lighting device of the vehicle. (11) Claim 1, wherein the remote alarm is constituted by a horn.
The automobile theft prevention system according to any one of items 1 to 10. (12) A claim in which the transmitting circuit is configured to transmit an identification signal for identifying the vehicle together with an alarm command, and the receiving circuit is configured to change the alarm operation of a remote alarm in response to the identification signal. The automobile theft prevention system according to any one of Items 1 to 11. (13) The remote alarm device includes a horn and a damaged vehicle display unit that displays an identification display corresponding to the identification signal, and the receiving circuit causes the horn to emit a certain alarm sound based on the alarm command. 13. The automobile theft prevention system according to claim 12, wherein the automobile theft prevention system is configured to display an identification display corresponding to the identification signal on the victim vehicle display section. (14) According to claim 12, wherein the remote alarm is constituted by an alarm, and the receiving circuit is configured to vary the pitch of the alarm sound emitted by the alarm based on the alarm command in accordance with the identification signal. Anti-theft system for the vehicle described. (15) Claim 12, wherein the remote alarm is constituted by an alarm, and the receiving circuit is configured to vary the intermittent state of the alarm sound emitted by the alarm based on the alarm command in accordance with the identification signal. The automobile anti-theft system described in . (16) The automobile theft prevention system according to any one of claims 1 to 15, wherein the receiving device and the remote alarm are incorporated into one portable case. (17) The automobile theft prevention system according to any one of claims 1 to 16, wherein the control circuit includes a release circuit that releases the operation of the theft initiation determination section. (18) The automobile theft prevention system according to claim 17, wherein an operating tool for activating the release circuit is mounted on the automobile. (19) The above-mentioned release circuit, an operating tool provided separately from the vehicle, a release transmitting circuit that wirelessly transmits a release signal issued by the operation of the operating tool to the vehicle, and a release transmitting circuit installed in the vehicle that wirelessly transmits the release signal. 18. The automobile theft prevention system according to claim 17, further comprising a release receiving circuit that receives the release signal and operates the release circuit based on the release signal. (20) The above-mentioned release circuit, an operating tool provided separately from the vehicle, a release transmitting circuit that wirelessly transmits a release signal issued by the operation of the operating tool to the vehicle, and a release transmitting circuit installed in the vehicle that wirelessly transmits the release signal. Claim 17, comprising: a release reception circuit that receives the release signal and operates the release circuit based on the release signal; and an operating tool that is mounted on the vehicle and that operates the release circuit.
20. The automobile theft prevention system according to any one of items 1 to 19.