JP3445382B2 - Vehicle anti-theft system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for preventing a vehicle from being stolen.

[0002]

2. Description of the Related Art As vehicle thefts increase, various proposals have been made to prevent them. For example, Japanese Utility Model Publication No. 61-84052 discloses that a vehicle is operated by an unqualified person (hereinafter, this state is called theft).
A means for prohibiting the drive of the starter motor when detecting is proposed. Further, Japanese Utility Model Laid-Open No. 61-24253 discloses an anti-theft device which compares a pre-registered code number with an input code number and operates a fuel pump when the code numbers match each other. Moreover, the anti-theft property is improved by installing the control circuit in a part that is not easily found.

[0003]

[Problem to be Solved by the Invention] Prohibiting the driving of the starter motor at the time of detecting the theft is not an effective antitheft measure against the pushing of the engine. In order to reliably prevent the engine from starting, it is necessary to take measures to interrupt the supply of fuel and ignition output. In addition, even if the registered code number and the input code number are compared and the engine is allowed to run when the two match, or the control device installation location is devised, the vehicle will become more sophisticated every day. It is hard to say that there are sufficient countermeasures before theft technology.

According to the present invention, the operation (theft) of a vehicle by an unqualified person is reliably detected, and the startability and safety of the engine are taken into consideration, and when the vehicle is stolen, the vehicle cannot be operated to prevent theft. The purpose is to provide a device.

[0005]

The vehicle antitheft system of the present invention enables the vehicle to operate based on the theft determination means for determining whether or not the vehicle is operated by a qualified person. The operation determining means for determining whether or not the information is transmitted between the theft determining means and the operation determining means by communication.

In this case, it becomes a problem when to transmit the information about the theft. That is, even if the theft determination means detects the theft of the vehicle, if the information is acquired on the operation determination means side after the engine has started for a considerable time, it does not serve as theft prevention. Therefore, the operation determination means
The moment the driver turns on the key switch and the power is turned on,
Alternatively, at the latest when the engine is started, it is necessary to acquire information as to whether or not it is a theft, and if it is determined that the theft has occurred, it is necessary to immediately stop the output of fuel and ignition. Conversely, once the information that it is not theft is obtained, it is not necessary to obtain the information about theft thereafter.
In order to prevent the engine start from being disabled due to an erroneous determination, it is desirable that the engine start prohibition determination based on the theft determination be performed at the minimum necessary level, that is, only once per start.

However, in a vehicle once judged to be normal, if the power supply of the device for judging engine start prohibition is directly connected to the battery, the engine start prohibition judgment device itself operates even if the key switch is turned off to stop the engine. Since it continues, no matter how many times it restarts, the device does not recognize it as a start. Therefore, there is a possibility that the engine start prohibition determination will not be performed again while maintaining the previous normality determination.

In order to deal with this, the operation determining means is
The determination result of the theft determination means is obtained every time the antitheft system is activated, or every time the power engine of the vehicle is started, or both of them. Further, when it is determined that the vehicle cannot be operated based on the theft determination result, the operation determining means causes the power engine of the vehicle to stop.

As described above, in order to reliably prevent the theft, the operation determining means must obtain information about the theft from the theft determining means as quickly as possible. However, it takes some time to obtain the information and determine that it is stolen. Therefore, if it is judged that the operation is performed by a qualified person and the engine is allowed to start only when the anti-theft property is too important, even if the key switch is turned on and cranking is started, the engine will start for a while. Since it is not permitted, neither fuel nor ignition is output and the startability deteriorates.

According to the present invention, the startability is prevented from deteriorating by continuing the operation of the vehicle until it is determined that the operation of the vehicle is impossible based on the result of the theft determination. . In order to prevent the engine from starting when it is determined to be theft, there are methods to shut off the fuel and ignition output, or to prevent the fuel pump from operating, but this is realized by an external expansion circuit or device. If so, the cost becomes high, and there is a problem of their reliability, so it cannot be said to be a desirable configuration. By keeping the number of components down, we keep costs low,
In order to maintain high reliability, in a vehicle having an engine control device, it is desirable to use the function of the engine control device.

In this case, the engine control device itself, which also has the function of the operation determining means, communicates information with the theft determining means, and when the theft occurs, the fuel injection or ignition output is stopped. Here, considering the fuel injection and the ignition output processing, it is necessary to calculate and set the fuel injection pulse width, the ignition timing, and the energization angle very quickly and accurately. Particularly in a multi-cylinder engine, the injection pulse and ignition pulse intervals become shorter as the number of cylinders increases, and the delay in the processing speed is likely to adversely affect the control response delay. From the viewpoint of theft prevention, the above-mentioned information transmission has to be more complicated and less regular information. Therefore, the load on the software in the information transmission itself becomes heavy and the processing time becomes long. If such processing is attempted within a time shorter than the output cycle of fuel injection or ignition, control of these is delayed, which is not desirable.

In order to address this problem, the present invention comprises a control device for controlling the operation of the power engine of the vehicle, and when the operation control means determines that the vehicle cannot be operated based on the theft determination result, the control is performed. By changing the control characteristic of the device, the power engine of the vehicle is stopped. The period from the start of information transmission between the theft determination means and the operation determination means to the time when the operation determination means determines that the vehicle cannot be operated, the target control item when the power engine is stopped. It is preferable to set it longer than the operation cycle of and shorter than the time during which the vehicle can travel.

By the way, in a system in which fuel and ignition are shut off by the engine control device itself when the vehicle is stolen,
Unless the engine control device recognizes that it is not theft, the engine control device stops the output of fuel and ignition as if the engine is stopped. When the device for determining whether or not the device is stolen and the engine control device are separate units, it is desired that information transmission between the two is as complicated as possible and lacks regularity from the viewpoint of theft prevention. However, there is a problem here. When performing a functional test of the engine control unit itself, such as during the assembly process of the engine control unit, at the time of shipping inspection, or when inspecting the product returned from the market, the anti-theft function, that is, unless fuel or ignition is recognized as not theft If the function to stop the output of is still effective, the output of fuel and ignition cannot be performed, and the inspection cannot be performed completely. Otherwise, complicated and irregular information as described above has to be exchanged with the engine control unit, but this is because the information transmission should not be easily reproduced to prevent theft. Basically, it must be impossible, and even if it is possible, it significantly impedes the shortening of inspection procedures and time, and is not efficient.

In order to deal with this problem, the antitheft system of the present invention has a disabling means for substantially disabling the operation determining means and always permitting the vehicle to operate. Further, even if the above problem is solved, it does not work properly if the person who performs the work forgets to activate the anti-theft function when the anti-theft system is installed in the vehicle. Even if the anti-theft function is enabled, it does not make sense to forget the setting just by turning off the power while the vehicle is being installed.

To address this problem, the present invention provides
In the initial state in which the vehicle antitheft system is attached to the vehicle for the first time, the invalidation means does not function and the operation determination means is in the valid state. Further, whether or not to make the invalidating unit function is determined based on the information stored in the non-volatile memory so that it is not affected even when the power supply to the system is cut off.

As described above, when the theft determination means for determining whether or not it is stolen and the means for determining engine start prohibition are separate entities, it is necessary to transmit information about whether or not they are stolen. In the case where the engine control device carries out the process of prohibiting the engine from being started in the case of theft, the engine control device itself has an original function of accurately controlling the operation of the engine. The function, engine control processing, must not be delayed or affected.

Therefore, it is desirable that unnecessary processing other than engine control is not performed as much as possible, and information transmission is started at a time convenient for the engine control device. However, if the engine control side is configured to start information transmission in a form that is first called by the theft determination device, the engine control side must always monitor the start of information transmission in order to set the timing of information transmission start. In addition, the number of wasteful processes increases, which is not a desirable configuration. In the present invention, when the operation determination means acquires the theft determination result, first, the operation determination means starts communication of information between the two in a form of inquiring the theft determination means.

As described above, when the device for judging whether or not it is stolen and the device for judging whether to prohibit engine start are separate bodies,
Information about whether or not it is stolen must be communicated between the two parties. Furthermore, when the engine start prohibition process at the time of theft is performed by the engine control device itself, various restrictions are caused between the engine control process and the information transmission process. However, both are configured separately. Then, the following problem further occurs.

First, when transmitting information, there is a problem that the information signal is affected by noise or a strong electric field, so that erroneous information is transmitted and malfunction may occur. Secondly, since the number of parts is large, the number of wiring and connection points increases accordingly, leading to a decrease in the reliability of the entire system.
There is also a problem that the cost becomes expensive. Furthermore, the installation location is a problem. From the standpoint of anti-theft, all the components that make up the anti-theft system cannot be installed in a location where they can be easily observed, exchanged, or operated from the outside. It is very difficult to secure a large number of such spaces inside the one vehicle that is overcrowded, and the assembly work is also difficult, which makes it difficult to maintain manufacturing quality.

In the anti-theft system, malfunction or malfunction causes a serious defect such that the theft is easy or, on the contrary, the vehicle cannot be started or run. Therefore, it is not possible to leave the above-mentioned problem-causing elements. Not desirable. In order to deal with this problem, it is preferable that either the theft determination means or the operation determination means, or both, be provided in the control device.

On the other hand, when the vehicle is incapable of traveling due to the theft prevention function due to a failure of a component, the normal operation must be restored by replacing the defective component. Then, altitude
In a recent vehicle having a complicated engine control system, it is not easy to identify a failure part only by the appearance that the vehicle cannot run due to diversification of components. Therefore, if there is no information that the vehicle cannot run due to the anti-theft function, it will take time to investigate the cause.

In order to deal with this problem, when it is determined that the vehicle cannot be operated based on the result of the theft determination and the power engine of the vehicle is stopped, the engine stop reason storage means for storing the information indicating that fact. Is preferably provided. However, when displaying such information, there are the following problems. For example, it is possible to provide a lamp or the like indicating that the anti-theft function has been activated in the vehicle compartment, but this is not preferable because it gives information to know what should be done to activate the anti-theft function. Therefore, the display of information is
It is desirable to use an external display device that can be connected and used only by a dealer or the like, rather than using a display device that is permanently installed in the vehicle. However, if the external display device dedicated to the anti-theft system is required, the dealer or maintenance company must prepare the dedicated external display device, which is not economical. Therefore, it is preferable that the self-diagnosis means for diagnosing various functions of the vehicle is provided, and the self-diagnosis result of the self-diagnosis means and the engine stop reason information can be displayed through the same external display device.

In some cases, there is no external display device as described above, and the components of the anti-theft system may be removed from the vehicle and returned to the manufacturer without knowing the cause. In such a case, if the above information disappears, it will no longer be possible to determine the cause of the inability to drive the vehicle.
Therefore, it is preferable that the engine stop reason storage means stores the engine stop reason information in the non-volatile memory.

In a vehicle that has been once normally judged, if the power supply of the device for judging engine start prohibition is directly connected to the battery, the problem that the theft can be easily stolen and the method for coping with the problem have been described above. After the power engine is once stopped, it is desirable to make the theft difficult by using engine control so that the power engine is not started unless the vehicle antitheft system or the control device is initialized once.

Considering the case where the antitheft system actually determines that the vehicle cannot be operated and the fuel and ignition outputs are stopped, the following problems occur. That is,
When the fuel and ignition outputs are stopped by the anti-theft function, the driver may not know it and may continue to turn the starter because it is just an engine malfunction. There is a risk of damaging the starter if you continue to rotate it beyond its rating. Further, in a manual transmission vehicle, it is possible to move the vehicle with the force of the starter while keeping the gears connected, but this also damages the starter and the ring gear on the engine side. It is difficult to move the distance enough to steal the battery because it consumes much battery power. However, even if the battery is stolen as a result, the starter is damaged and the battery is exhausted, which is not preferable. In order to avoid this problem, it is preferable to include means for limiting the operation of the starter motor when it is determined that the vehicle cannot be operated.

[0026]

The theft determination means determines whether or not the vehicle is being used by a qualified person, and transmits the determination result information to the operation determination means. The operation determination means determines whether to permit the vehicle to travel based on the information, and when it determines that the vehicle is prohibited from traveling, stops the power engine of the vehicle, for example, the engine or the electric motor.

The control device for controlling the operation of the power engine controls the operating state of the engine and can stop the engine depending on the control amount. The engine stop reason storage means stores information indicating that the vehicle has been prohibited from traveling due to the theft determination and the power engine has been stopped, such as a flag or a fault code. The self-diagnosis means is for diagnosing whether or not various functions of the vehicle are functioning normally, and the diagnosis result is displayed via a display device installed in the vehicle or an external display device. .

[0028]

EXAMPLES The present invention will be described in detail below with reference to examples. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. The collation means 2a collates whether or not a legitimate key is used, and the theft determination means 2b discriminates whether or not it is theft.
Determine with. This is specifically described, for example, in JP-A-64-
The method of using both mechanical key verification and electronic code verification, which is proposed in Japanese Patent No. 56251, can be used, but is not limited to this.

The result of determination by the theft determination means 2b is transmitted to the operation determination means 3 by communication, and when the determination result of theft is received, the control device 4 stops the engine 1. The control device 4 detects the operating state parameter of the engine 1 through the sensor 7 and controls the engine 1 appropriately based on the detected operating state parameter. Although shown as a separate block in FIG. 1, the operation determination means 3 and the control device 4 share a common CP.
It is controlled by U.

When the operation judging means 3 judges that the operation of the vehicle is prohibited, the information indicating the fact is held in the non-volatile memory 6 and can be displayed through the external display device 5. In this case, the external display device is not permanently installed in the vehicle, but can be properly connected and used, but it goes without saying that even a permanently installed display device in the vehicle, such as a lamp in the passenger compartment, etc., does not satisfy this configuration. it can. Further, the power source for driving the vehicle is not limited to the engine, and the present configuration can be adopted even in the case of an electric motor or the like.

FIG. 1 shows an example in which the theft determination means 2b, the operation determination means 3 and the control device 4 are provided separately, but FIG. 2 is a block diagram of another embodiment in which they are integrated. is there. In FIG. 2, the control device 8 is the theft determination means 2 described above.
b, the operation determination means 3 and the control device 4 are integrated, and each determination is made in one device. This eliminates the need for wiring and complicated information transmission between them, so that it is possible to construct a system that is low in cost, highly reliable, and hard to steal.

Next, the relationship between the vehicle operation prohibition determination, the engine control, and the information transmission will be described with reference to FIG. With the operation 10 of the key switch, the voltage supplied to the vehicle antitheft system becomes 11. Where V
_B is the battery voltage. When the supply voltage rises, the system is immediately initialized and the engine is allowed to start (Inj.Flag = 1). As a result, the engine control is started as usual, and the fuel injection pulse 15 is started to be output as the engine rotates.

On the other hand, the ECU having the functions of both the control device and the operation determining means uses the theft determining means IMMO to determine whether or not the engine start should be prohibited by determining the timing at which the engine control is not hindered. (13a). Here, an example in which serial communication is used is shown, and inquiry information is gradually transmitted at a timing that does not affect fuel injection or ignition pulse. Similarly, when the stolen information is received, the information is gradually received at a timing that does not hinder the engine control.

Then, if (NG) as shown in FIG. 3, that is, if the information that the vehicle is stolen is obtained (14a), it is determined that the engine start is prohibited, and the start permission flag 12 is set.
(Inj.Flag) is reset. In response to the reset of this flag, the engine control immediately stops the output 15 of the fuel injection pulse, and the failure flag 1 indicating that the engine is stopped by the antitheft function.
7 in the non-volatile memory. Therefore, even if the key switch is once turned off and restarted in order to restart the engine that has reached the engine stall, the failure flag 17 will not disappear. The engine speed Ne is 16 in this process.
It changes like.

With the above arrangement, it is possible to prevent the theft without affecting the engine control and to surely stop the engine in the case of the theft. Although only the fuel injection is described in FIG. 3, the same processing can be performed for the ignition output, and the fuel injection and the ignition output may be processed at the same time. Although FIG. 3 illustrates an example in which the inquiry about the theft determination result is performed only when the supply voltage to the vehicle antitheft system rises, an example in which the inquiry is performed each time the engine is started will be described in FIG. 4.

If the inquiry is made only when the supply voltage rises, for example, if the vehicle antitheft system power supply is directly connected to the battery after the engine is once normally determined and the engine start is permitted, the inquiry will not be made again. The inquiry is made every time the engine speed 16 reaches a predetermined value 18 and it is determined that the engine is started. In this way, even if the battery is directly connected and stolen after the normal determination is made once, it can be always disabled at the next engine start, so that the theft can be made difficult.

In this embodiment, the start of the engine is judged by the engine speed reaching a predetermined value, but it is not limited to this. For example, the operation of the starter may be checked, or the operation may be determined from the movement of engine parameters such as engine load. Next, referring to FIG. 5, a method of assembling and inspecting an engine control device having an anti-theft function will be described. When assembly is started in step 21 and completed in step 22, first, in step 23, the information transmission circuit is inspected.
This is to preliminarily test the function of the circuit, since there is no opportunity to use the circuit to invalidate the anti-theft function thereafter. However, this does not necessarily have to be inspected in advance, and the order of inspection may be changed depending on the convenience of the inspection procedure. Further, since the information transmission circuit is used not only for the information transmission of the anti-theft function but also for other purposes, if the function of the circuit can be inspected during the normal inspection process, this procedure may be omitted. Absent. Next, in step 24, the anti-theft function is invalidated. Whether to invalidate or not is to be switched by the data stored in the non-volatile memory or the flag.
At, the data or flag is set to a value indicating invalidation. Since the anti-theft function is disabled, fuel injection and ignition signals are output and inspection is possible.
At 5 all remaining functional tests are performed.

When the inspection is completed, the invalidation of the anti-theft function is canceled in step 26. After that, it is checked in step 27 whether the anti-theft function is actually valid. If it is erroneously invalidated, the procedure returns to step 26 to cancel the invalidation.
Then, if it is surely confirmed that the anti-theft function is valid, the process proceeds to step 28 and the product is shipped. In FIG. 6, the theft determination procedure will be described.

In step 61, it is first determined whether or not the owner is trying to move the vehicle. For this, for example, the method of combining the mechanical key collation and the electronic code collation, which is proposed in Japanese Patent Laid-Open No. 64-56251, can be used, but the method is not limited to this. . As a result, it is determined in step 62 whether or not it is theft, and if it is determined that it is theft, NG information indicating that it is theft is generated in step 63. Conversely, if it is determined that it is not theft, it is normal in step 64. OK information indicating that is is generated. Then, in step 65, wait for being asked to convey this information. It should be noted that this is merely waiting in terms of the procedure, and the software configuration does not necessarily constitute such an infinite loop. When it is requested to transmit information, the information generated as described above is transmitted to the request source in step 66.

Next, referring to FIG. 7, engine start permission determination and engine control will be described. First, in step 71, information required for engine control is fetched. This is, for example, engine speed or load information. Then, in step 72, the engine control itself is given the highest priority. In step 73, it is determined whether to confirm the theft determination result. For example, it is determined whether or not the key switch has just been turned on, whether or not the engine has started, and the like. If it is determined to confirm, the process proceeds to step 74, and the theft determination means is inquired about the theft determination result information. This corresponds to the information transmission request shown in the procedure 65 of FIG. 6 described above.

Once the information is obtained, step 75 verifies that the information is correct. For serial communication, this is a parity check or sum
This is to check whether the information transmitted by checking, timeout, etc. is not disturbed by noise or the like, or whether the information is really transmitted. If it is determined in step 76 that the information is not correct or that the information itself has not arrived, the process proceeds to step 78a. On the other hand, when it is determined that the information itself is correct, the process proceeds to step 77, and it is determined whether the obtained information indicates theft. If it is determined to be theft, the process proceeds to step 78a. In step 78a, it is determined that the engine start is not permitted, the fuel and ignition outputs are cut off, and in step 78b, a failure flag indicating that the engine is stopped by the antitheft function is stored in the nonvolatile memory. On the other hand, in step 73, it is determined that it is not necessary to confirm the theft determination result, or in step 77
If it is determined not to be theft, the engine is controlled as usual in step 79a and the failure flag is cleared.

With this procedure, even if the information cannot be obtained, for example, if the information transmission line is disconnected, the engine start is prohibited as in the case of the theft, so that the theft is surely prevented. can do. Next, the input / output configuration of the anti-theft system will be described with reference to FIG. Reference numerals 7a and 7b are sensors such as a throttle opening sensor, a crank angle sensor, an air flow sensor, and a water temperature sensor, which detect the operating state of the engine. After inputting these signals into the input circuit 81a and performing waveform processing, the central processing unit 8
Enter in 2a. Here, after the signal is A / D converted, R
Based on the measured values, which are temporarily stored in the AM 85a and stored in the ROM 86a, various calculation processes are performed to control the actuators 84a, 84b such as power switches for driving injectors and ignition coils, and the output circuit A signal is sent to 83 to control the supplementary components and finally to control the operation of the engine.

The theft determination device 2b is a serial communication interface (SCI) 87a, 87b.
Connected via. The theft determination device 2a also has a central processing unit 82b and memories 85b and 86b, and an input signal from a verification device such as the regular key verification device 2a is input to the input circuit 81b.
Then, it is properly processed to determine whether or not the theft has occurred. When it is determined to be theft and the engine start is prohibited, the information indicating that is stored in the non-volatile memory 6 and displayed on the external display device 5 via the SCI 87a. FIG. 9 is a block diagram of an embodiment in which the functions of FIG. 8 are integrated. In this embodiment, the input circuit 81 includes the sensors 7a and 7b.
Accepts the signal from the matching device 2a together with the signal from
The CPU 82 also performs the theft determination together with the engine control.

FIG. 10 and FIG. 11 show a procedure in which once the engine is stopped, the engine start is not permitted unless the engine control unit is initialized. When the power-on reset occurs, the process of the reset routine is started from step 90. First, in step 91, the engine control-related initialization processing is performed, and then in step 92, the engine start prohibition is released. After recovering from the reset, the normal engine control process is started. In that first step 96,
It is determined whether the engine is currently in the stalled state. This is determined by the operating condition parameter obtained through the sensor 7, for example, whether the engine speed is 0 or not. When it is determined that the engine is in the stalled state, the process proceeds to step 97, and the start is prohibited. This corresponds to the process of resetting the start permission flag (Inj.Flag) of FIG. 12 described below.
If it is determined in step 96 that the engine is not in the stalled state, step 9
Proceeding to 3, it is determined whether the engine start inhibition has been released. If it has been released, the routine proceeds to step 94 to perform normal control, but if it has not been released, the routine proceeds to step 95 to shut off the output of fuel and ignition to prohibit engine start, and at step 98 to limit the operation of the starter. . As a method of limiting the operation of the starter motor in step 98, for example, the starter motor may not be operated at all, or may be operated for a predetermined period. Alternatively, the supply voltage or current may be limited to reduce the rotation speed of the starter motor.

By doing so, since the power-on reset does not occur when the power source of the engine control device is directly connected to the battery, theft can be surely prevented. The operation in that case will be described with reference to FIG. Even if the normal determination is made once in 14d, if the engine stall is detected, the start permission flag (Inj.Flag) is reset to keep the start prohibition state. After that, even if the starter is started and started, if the power supply 11 is directly connected to the battery, the power-on reset does not occur even if the key switch is turned on, so the start prohibition state is not released ( Inj.flag remains 0). Therefore, the engine cannot be started and theft can be reliably prevented.

Next, an embodiment for limiting the operation of the starter motor will be described with reference to FIG. As in the case of FIG. 12, even if the normal determination is made once in 14d, when the engine stall is detected, the start permission flag 12 (Inj.Flag) is reset to keep the start prohibited state. After that, even if the starter is started and started, if the power supply 11 is directly connected to the battery, the power-on reset does not occur even if the key switch is turned on, so the start prohibition state is not released (Inj. .Flag remains 0). Here, even if the driver tries to continue turning the starter, the operating time of the starter is limited to t _ST , and the starter does not operate any more. If t _{ST is set} to 0 second, that is, no operation is performed, the anti-theft property is further enhanced. On the other hand, t _ST
Is set to a predetermined time of 0 or more, the starter can be operated for a minimum period of time.
Even if the engine stalls on the railroad crossing in the state of 3, it is possible to secure a minimum operation time to escape from the railroad crossing, so that the risk of a railroad crossing accident can be suppressed.

[0047]

According to the present invention, the power engine of a vehicle can be reliably stopped when it is considered to be stolen without affecting the engine controllability, and it is inexpensive, highly reliable, and excellent in maintainability. Anti-theft system can be provided.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing the configuration of another embodiment of the present invention.

FIG. 3 is a diagram showing a timing chart of an embodiment of the present invention.

FIG. 4 is a diagram showing a timing chart of another embodiment of the present invention.

FIG. 5 is a flow chart showing an example of a procedure for manufacturing and inspecting the device of the present invention.

FIG. 6 is a flowchart showing a procedure of an embodiment of the present invention.

FIG. 7 is a flowchart showing a procedure of an embodiment of the present invention.

FIG. 8 is a block diagram showing an example of an internal configuration of an apparatus according to an embodiment of the present invention.

FIG. 9 is a block diagram showing an example of an internal configuration of an apparatus according to another embodiment of the present invention.

FIG. 10 is a flowchart showing a procedure of an embodiment of the present invention.

FIG. 11 is a flowchart showing a procedure of an embodiment of the present invention.

FIG. 12 is a diagram showing a timing chart of another embodiment of the present invention.

FIG. 13 is a diagram showing a timing chart of another embodiment of the invention.

[Explanation of symbols]

1 ... Engine, 2a ... Collation device, 2b ... Theft determination means,
3 ... operation determination means, 4 ... control device, 5 ... external display device,
6 ... Memory, 7 ... Sensor

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields investigated (Int.Cl. ⁷ , DB name) E05B 65/12-65/42 B60R 25/00-25/10 E05B 49/00-49/04

Claims (7)

(57) [Claims] 1. A verification means for verifying whether or not a vehicle operator is a qualified person, a theft determination means for determining vehicle theft based on a verification result of the verification means, and a determination result of the theft determination means. In a vehicle theft prevention system including an operation determination means for determining whether or not the vehicle can be operated based on a communication means for performing communication between the theft determination means and the operation determination means, at the time of system startup and the vehicle Either at the time of starting the power engine, or both, a means for communicating between the operation determination means and the theft determination means via the communication means is provided , and the operation determination means starts communication with the theft determination means. From
Stop the power engine until the judgment result is output.
Longer than the operation cycle of the target control item when
Set shorter than the time required for the driven power engine to stabilize.
Vehicle anti-theft system, characterized by being. Wherein disabling the function of the operation determination unit, a vehicle theft prevention system according to claim 1, characterized in that it comprises an invalidation means for such to always allow operation of the vehicle. The wherein the initial state of the vehicle anti-theft system is first attached to the vehicle, the disabling means without function, according to claim 2, characterized in that it comprises means for the effective state operation determination means Vehicle anti-theft system. Wherein when the operation determining means determines that precludes operation of the vehicle, any one of the claims 1-3, characterized in that it comprises a storage means for storing information indicating that
Vehicle theft prevention system described in the paragraph. 5. A self-diagnosis means for diagnosing various functions of a vehicle is provided, and the self-diagnosis result by the self-diagnosis means and the information stored in the storage means can be displayed on the same external display device. The vehicle antitheft system according to claim 4, which is characterized in that. 6. After the power engine is stopped once, either of claims 1-5, characterized in that it comprises a means for such initialization once the control device does not start the power engine unless performed 1 Vehicle theft prevention system described in the paragraph. 7. If the operation determination means determines that precludes operation of the vehicle, any one of claims 1-6, characterized in that it comprises means for limiting the operation of the starter motor 1
Vehicle theft prevention system described in the paragraph.