JP4306920B2 - Engine starter and engine car - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an engine starting device and an engine vehicle for starting an engine from a portable transmitter or the like in a remote place from the vehicle, and more particularly, an engine starting device capable of keylessly starting an engine with an immobilizer (theft prevention device). About.
[0002]
[Prior art]
As shown in FIG. 6, an engine immobilizer (anti-theft device) for preventing theft of a vehicle is a vehicle key that has a small transmitter (transponder) 1 in which a unique code corresponding to the vehicle is stored in advance in a grip portion 2. 3 is electrically connected to the vehicle-side engine electronic control unit 8 that controls the engine start and the like, and is connected to the anti-theft electronic control unit 5 incorporated in the key cylinder 4 and to the unit 5. A transmission / reception antenna (transmission / receiver antenna) 7 attached around the key rotor 6 of the cylinder 4 is provided.
[0003]
The driver inserts the vehicle key 3 into the key cylinder 4, or then turns the key rotor 6 to the ignition switch ACC output (output to turn on the power of accessories in the vehicle) position or IG output (all power sources in the vehicle When it is turned to the output) position to turn on the power, the detection output of the dedicated key detection switch provided in the key cylinder 4 or the ACC output or IG output is output as a key detection signal. The control unit 8 supplies a communication permission signal to the anti-theft electronic control unit 5, and upon receiving this signal, the anti-theft electronic control unit 5 emits a radio wave including an interrogation signal via the transmission / reception antenna 7 and receives this signal. The device 1 uses the received radio wave intensity to activate the power supply and includes a unique code as a response signal. In response, the anti-theft electronic control unit 5 or the vehicle-side engine electronic control unit 8 determines whether the received response signal is appropriate, generates an engine start permission signal if they match, and outputs an engine start permission signal if they do not match. It does not occur. For this reason, the vehicle key 3 having a unique code corresponding to the vehicle is automatically checked for suitability, so that the engine does not start due to the unauthorized connection of the key or the ignition switch, and the vehicle is stolen. Can be effectively prevented.
[0004]
On the other hand, a wireless engine starting device for starting and controlling a vehicle engine from a remote point has been put into practical use. This wireless engine starter receives an engine start command signal from a portable transmitter and outputs a plurality of pseudo signals corresponding to an ACC output, an IG (ignition) output, and an ST (starter) output for starting a cell motor. It has an in-vehicle receiver that supplies the signal line of the ignition switch. Even if the vehicle key is not inserted into the key cylinder and turned, only the engine start command signal is transmitted from the portable transmitter, the engine is started, and before the driver gets on the vehicle, the warm air operation or the interior air conditioner is used in advance. Temperature control is possible. This type of wireless engine starter is not limited to standard equipment at the vehicle manufacturing stage, but has an optional merit that additional equipment can be added as needed by simply connecting the in-vehicle receiver to the output line extending from the key cylinder. .
[0005]
[Problems to be solved by the invention]
However, when the wireless engine starter is additionally installed in the vehicle with the engine / immobilizer, the vehicle key must be actually inserted into the vehicle with the engine / immobilizer, whereas the wireless engine starter is required. However, since the engine start can be realized by a keyless operation by transmitting an engine start command signal in a remote place, the combination of the two contradicts each other and it is impossible to achieve both. There is also known a timer engine starter that does not use a portable radio but generates an engine start command signal for a time, but this also starts the engine without using a vehicle key, so the same problem occurs. there were.
[0006]
In view of the above problems, an object of the present invention is to provide an engine starter that can start an engine keylessly even in a vehicle equipped with an engine immobilizer and can be additionally equipped.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the measures taken by the present invention are based on a simulated body (small transmitter unit) preliminarily regarded as a vehicle key having a code corresponding to the vehicle, and a key detection signal obtained by inserting the vehicle key. And an engine start command means for generating an activation control signal for temporarily activating the simulated body together with the pseudo signal.
[0008]
That is, according to the present invention, an anti-theft electronic control unit is provided in a key cylinder by a key detection signal generated based on insertion of a vehicle key containing a small transmitter that stores a code corresponding to the vehicle in advance into the key cylinder. The small transmitter that radiates a radio wave including an interrogation signal via a transmission / reception antenna and receives the response returns a radio wave including the code as a response signal, and the antitheft electronic control unit or the vehicle-side engine electronic control means transmits / receives In the engine starter equipped with a vehicle antitheft system that determines whether the response signal received through the system is appropriate and matches, the above code is stored, and the activation control signal A small transmitter unit capable of sending a response signal including the code to the anti-theft electronic control unit, and an engine start Based on the reception or generation of the command signal, the first pseudo signal corresponding to the key detection signal and the activation control signal are transmitted, and the second and third pseudo signals corresponding to at least the IG output and ST output of the ignition switch. Engine starting command means for sending the signal to the signal line of the ignition switch. The first pseudo signal corresponding to the key detection signal may be, for example, an ACC pseudo signal or an IG pseudo signal (second pseudo signal). The first pseudo signal is a pseudo signal corresponding to the detection output in a vehicle with an engine immobilizer having a dedicated key insertion detection switch in the key cylinder. The vehicle-side engine electronic control means and the anti-theft electronic control unit may be an integrated electronic control unit.
[0009]
When the engine start command means receives or generates the engine start command signal, the engine start command means sends out a first pseudo signal and an activation control signal corresponding to the key detection signal. The vehicle-side engine electronic control unit that has received the first pseudo signal sends a communication permission signal to the anti-theft electronic control unit, so that the anti-theft electronic control unit sends the inquiry signal directly or indirectly through the receiving antenna. Sending to the small transmitter unit and receiving the activation control signal activates the small transmitter unit to send back a response signal containing the code stored in response to the question signal. The electronic control unit or the vehicle-side engine electronic control means determines whether or not the code included in the response signal is appropriate, and an engine start permission signal is generated when the codes match. At the same time, the engine start command means supplies the second and third pseudo signals corresponding to at least the IG output and the ST output of the ignition switch to the signal line of the ignition switch, respectively, so that the cell motor is started and the engine is started. . Further, since the code verification can be realized by actually inserting and turning the vehicle key possessed by the driver into the key cylinder, the antitheft function of the vehicle with the engine / immobilizer is not impaired.
[0010]
This simulated body can be roughly classified into those with a pickup antenna and those without a pickup antenna. For those with a pickup antenna, the pickup antenna is provided in the reception range of the radiated radio wave of the transmission / reception antenna, and the small transmitter unit transmits a response signal to the transmission / reception antenna via the pickup antenna. The small transmitter unit includes a small transmitter taken out from one of the registered immobilizer keys (main key and a plurality of sub keys) that the driver properly obtains when purchasing a vehicle, a pickup antenna, And a switch antenna for electrically connecting the pickup antenna and the relay antenna by an activation control signal. The one with a pickup antenna is appropriately employed when the anti-theft electronic control unit and the transmission / reception antenna have an integral unit configuration.
[0011]
When the switch means receives the activation control signal from the in-vehicle receiver, the pickup antenna and the relay antenna are electrically connected for the first time, and communication between the small transmitter unit and the anti-theft electronic control unit becomes possible. When the electrical connection between the pickup antenna and the relay antenna is constant, when the vehicle key is inserted into the key cylinder, in addition to the communication between the vehicle key and the antitheft electronic control unit, Communication with the anti-theft electronic control unit is also established, which causes a defect in the batting state, but the batting state can be avoided by providing the switch means.
[0012]
Usually, in the vehicle key for immobilizer, since the small transmitter is embedded in the clip part without contact with the key body, the small transmitter storing the registered code can be easily taken out, Since the extracted small transmitter can be transplanted and mounted as a component of the small transmitter unit, it is not necessary to retrieve the registered code from a vehicle dealer or the like, or to decode the code that may be suspected of fraud.
[0013]
Here, in order to demonstrate further security, the activation control signal is not an on / off signal but a serial or parallel encoded signal, and is electrically connected to a pickup antenna as a configuration of a small transmitter unit. A modulation / demodulation circuit and a response circuit that is electrically connected to the modulation / demodulation circuit and that receives the encoded signal and transmits a response signal to the interrogation signal are provided. Even if an unauthorized person electrically connects a pickup antenna and a small transmitter unit and generates a key detection signal by directly connecting an ignition switch, the small transmitter unit is not activated unless the encoded signal is known. Therefore, communication between the small transmitter unit and the antitheft electronic control unit is not realized, and the engine does not start.
[0014]
On the other hand, as a device without a pickup antenna, the small transmitter unit can be connected to the small transmitter built in the vehicle key and the anti-theft electronic control unit and relayed to and from the small transmitter. An antenna and switch means for electrically connecting the anti-theft electronic control unit and the relay antenna by an activation control signal. Direct communication between the anti-theft electronic control unit and the small transmitter can be realized without using a transmission / reception antenna. The activation control signal is an encoded signal, and the small transmitter unit is electrically connected to the modulation / demodulation circuit electrically connected to the antitheft electronic control unit, and receives the encoded signal. And a response circuit for transmitting a response signal to the interrogation signal. A device without a pickup antenna is appropriately employed when the anti-theft electronic control unit and the transmission / reception antenna are separated.
[0015]
The pickup antenna mounting position must be within the power reception range of the radiated radio wave of the transmission / reception antenna, but it may be supported by the column cover and face the transmission / reception antenna. In order to be within the directivity range, it is desirable that the affixed antenna be fixed to the exposed end surface side of the key cylinder. This antenna may be a coil antenna.
[0016]
Since a vehicle with an engine immobilizer is a crime prevention system that assumes that a regular driver has boarded the vehicle, the equipment of the engine starter that starts the engine unattended, whether it is standard equipment or additional equipment, is crime prevention It can be said that there are some disadvantages. Of course, it is up to the driver (vehicle owner) to self-responsibly determine whether to start the engine unattended or after starting the ride. The present invention relates to an abnormality detection sensor that detects the intensity of a physical quantity such as vibration, noise, or light applied to a specific part of a vehicle, and the second output when the output of the abnormality detection sensor exceeds a threshold after the engine is started. And a first IG output canceling means for forcibly canceling the supply of the pseudo signal. If an unauthorized person breaks through a door, etc., enters the driver's seat and steals the vehicle until the driver gets on after the engine starts, the abnormality detection sensor detects vibration, noise, light, etc. Since the first IG output canceling means forcibly cancels the supply of the second pseudo signal in order to detect the physical strength such as, the engine is stopped and the vehicle can be prevented from getting on and off.
[0017]
The engine start command means may be a vehicle-mounted receiver that receives an engine start command signal from a portable transmitter, or a timer engine start device that generates an engine start command signal in a timed manner.
[0018]
When the engine start command means is an in-vehicle receiver, it is appropriate to adopt the following configuration. That is, the present invention forcibly cancels the supply of the second pseudo signal when the door sensor for detecting the opening / closing of the door and the detection output of the door sensor is in the open state after the engine is started. When the door unlock command signal is output, after the engine is started, when the detection output of the door sensor is in the open state, the supply of the second pseudo signal is extended for a predetermined time and released. And a configuration having IG output canceling means. When the engine is started, it usually means a period when the legitimate driver does not get on. However, even if an unauthorized person tries to open the door and enter the vehicle, the door sensor is activated at this time, and the second IG Since the output canceling means forcibly cancels the supply of the second pseudo signal and the engine is forcibly stopped, it is possible to prevent the vehicle from getting on and off. In addition, when a door / unlock command signal is sent from the portable transmitter and the door is opened after the engine is started, it means that the authorized driver is just getting on the train. The IG output canceling means releases the second pseudo signal by extending the supply of the second pseudo signal for a predetermined time, so that the driver gets on and inserts the vehicle key within the extended period (for example, 30 seconds), and the IG output position When the key rotor is completely rotated, even if the supply of the second pseudo signal is released, the IG output is not cut off, and the driver can operate the vehicle without stopping the engine. Of course, if the above operation is not performed within the extended period, the engine stops for crime prevention.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Next, a first embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of an engine starter according to a first embodiment of the present invention.
[0020]
The engine starting device of this example has an engine immobilizer (theft preventing device) for preventing theft of the vehicle, and this engine immobilizer is a vehicle side engine electronic control unit (engine ECU) that controls the engine starting and the like. ) An anti-theft electronic control unit (immobilizer ECU) 5 that is electrically connected to 8 and incorporated in the key cylinder 4, and a transmission / reception that is electrically connected to the unit 5 and attached around the key rotor 6 of the key cylinder 4 And an antenna (transmission / receiver antenna) 7. The engine starter is a wireless engine starter that receives an engine start command signal from the portable transmitter 10 and corresponds to an ACC pseudo signal S1 corresponding to the ACC output of the ignition switch in the key cylinder 4. , An IG pseudo signal S2 corresponding to an IG (ignition) output and an ST pseudo signal S3 corresponding to an ST (start) output for starting the cell motor are supplied to the signal lines L1, L2, and L3 of the ignition switch via lead wires, respectively. It has the in-vehicle receiver 12 for doing. Note that L is a power supply line of the in-vehicle battery. The engine starter according to the present embodiment includes a vehicle key 3 having a small transmitter (transponder) 1 in which a unique code corresponding to the vehicle is stored in advance or rewritable as shown in FIG. Outside, this Small Type transmission vessel As a simulation object for installation in vehicle 1, a pickup antenna 13 provided within a power reception range of the radiated radio wave of transmission / reception antenna 7 and a unique code corresponding to the vehicle are stored in advance, and an activation control signal from vehicle-mounted receiver 12 A small transmitter unit 14 is provided for supplying a response signal including the unique code to the pickup antenna 13 by receiving E.
[0021]
This small transmitter unit 14 as a simulated body is a small transmitter 14a taken out from one of registered immobilizer keys (main key and a plurality of sub keys) that the driver properly obtains when purchasing a vehicle. A relay antenna 14b that is electrically connectable to the pickup antenna 13 and performs transmission / reception with the small transmitter 14a, and an activation control signal E to detect the pickup antenna 13 and the relay antenna. 14b And a normally open switch means 14c for electrically connecting the two.
[0022]
The pickup antenna 13 is a pasted coil antenna pasted around the key rotor 6 on the exposed end face side of the key cylinder 4, and before the pasting, a release paper is pasted on the coil antenna body through an adhesive layer. did Is. For this reason, the pickup antenna 13 can be attached and fixed around the key rotor 6 with one touch only by peeling the release paper. Further, when the coil antenna is in this position, communication is good because it is within the radio wave directing area of the transmission / reception antenna 7. Further, since the key hole 6a is exposed in the central hole of the coil antenna, it does not interfere with the insertion of the vehicle key. However, since the marks “OFF” or “LOCK”, “ACC”, “ON”, “ST” indicating the rotation position of the ignition switch engraved on the key rotor 6 are hidden, the surface of the coil antenna is hidden. The above-mentioned marks “OFF” or “LOCK”, “ACC”, “ON”, “ST” are preferable.
[0023]
The engine starter in this example is a handbrake position, parking position, lock position, etc. of In addition to having a start safety detection sensor 16 so that the engine can be started only in a state, an abnormality occurrence detection sensor 17 for detecting the physical intensity of vibration, noise, light, etc. applied to a specific part (for example, a door) of the vehicle is provided. In addition, the in-vehicle receiver 12 has first IG output canceling means 12a for forcibly canceling the supply of the IG pseudo signal S2 when the detection output of the abnormality occurrence detection sensor 17 exceeds the threshold after the engine is started. ing. The in-vehicle receiver 12 is a control device that incorporates a microcomputer (MPU) outside the receiving unit.
[0024]
Next, the operation of the engine starter will be described with reference to FIG. When the driver transmits an engine start command signal I from the portable transmitter 10 in a remote place within the transmission range from the vehicle, the in-vehicle receiver 12 that receives the engine start command signal I corresponds to a key detection signal. The ACC pseudo signal S1 and the IG pseudo signal S2 to be transmitted are supplied to the signal lines L1 and L2 of the ignition switch through lead wires, respectively, and the activation control signal E is supplied to the small oscillator unit 14. When the engine electronic control unit 8 receives the pseudo signals S1 and S2, the vehicle-side engine electronic control unit 8 sends a communication permission signal R to the anti-theft electronic control unit 5 incorporated on the key cylinder side, and the anti-theft electronic control unit. 5 emits a radio wave including an interrogation signal via the transmission / reception antenna 7. On the other hand, activation control signal E Since the normally open switch means 14c is closed in the small transmitter unit 14 that has received the signal, the small transmitter 14a receives the interrogation signal from the pickup antenna 13, and the small transmitter 14a is stored for the interrogation signal. Since the communication period C for returning the response signal including the code is established, the anti-theft electronic control unit 5 that has received the response signal determines whether the code included in the response signal is appropriate. An engine start permission signal is supplied to. The vehicle-side engine electronic control unit 8 may determine whether the code is appropriate and generate an engine start permission signal. Immediately thereafter, the in-vehicle receiver 12 supplies the ST pseudo signal S3 corresponding to the ST output of the ignition switch to the output line L3 via the lead wire, so that the cell motor is activated and the engine is started. Of course, since the engine start command signal I is a unique encoded signal corresponding to the vehicle, the in-vehicle receiver 12 performs the verification, and therefore when the in-vehicle receiver 12 receives a different encoded signal. Since the activation control signal E and the pseudo signals S1 and S2 are not generated, the engine does not start and the vehicle theft can be prevented.
[0025]
Further, since the code verification can be realized by actually inserting the vehicle key possessed by the driver into the key cylinder 7 and turning it, the antitheft function of the vehicle with the engine / immobilizer is not impaired. In particular, the activation control signal E is supplied from the in-vehicle receiver 12 to the small transmitter unit 14 only within a certain period, and the normally open switch means 14c is closed only during this period, and then the opened state. Since the pickup antenna 13 and the small transmitter 14a are electrically disconnected, when the engine is started with the vehicle key, the communication does not batting, and the anti-theft function of the vehicle with the engine / immobilizer may be impaired. Absent.
[0026]
In the period until the driver gets on after the engine is started, if an unauthorized person breaks through a door or the like and enters the driver's seat and steals the vehicle, the abnormality detection sensor 17 detects vibration, noise, Since the first IG output canceling means 12a of the in-vehicle receiver 12 forcibly cancels the supply of the ACC pseudo signal S1 and the IG pseudo signal S2 in order to detect the physical intensity of light or the like and output the abnormality detection signal T. The engine stops and the vehicle can be prevented from getting on and off.
[0027]
Although the above example is a simulated body including the pickup antenna 13, a simulated body not including the pickup antenna 13 may be used. As a thing without a pickup antenna , The antitheft electronic control unit 5 and the switch 14c are connected. Anti-theft electronic control unit 5 without passing through the transmitting / receiving antenna 7 When Direct communication with the small transmission unit 14 is realized. A device without a pickup antenna is appropriately employed when the anti-theft electronic control unit 5 and the transmission / reception antenna 7 are separated.
[0028]
FIG. 4 is a block diagram showing the configuration of the engine starter according to the second embodiment of the present invention. 4, the same parts as those shown in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.
[0029]
The small transmitter unit 15 in this example is electrically connected to the modulation / demodulation circuit 15a electrically connected to the pickup antenna 13, and receives the activation control signal E ′ as a serial encoded signal. A response circuit 15b for transmitting a response signal to the interrogation signal. That is, as in the first embodiment, a small transmitter taken out from one of the registered immobilizer keys (main key and a plurality of sub keys) that the driver properly obtains at the time of vehicle purchase is not used. In addition, a response circuit 15b in which a code corresponding to a vehicle is stored in advance is configured. When a specific encoded activation control signal E ′ is received, the response circuit 15b is activated to prevent theft prevention electronic control unit. 5 is established.
[0030]
In the first embodiment, when an unauthorized person electrically connects the pickup antenna 13 and the relay antenna 14b directly and generates a key detection signal by directly connecting an ignition switch, the small transmitter 14a and the antitheft electronic control unit 5 However, in this example, unless the specific encoded activation control signal E ′ is applied to the small transmitter unit 15, the small transmitter unit 15 Since it is not activated, communication between the small transmitter unit 15 and the antitheft electronic control unit 5 is not established, and the engine does not start. Contributes to improved security.
[0031]
In the case of this example as well, a simulated body that does not include the pickup antenna 13 may be used. In such a case, the small transmitter unit 15 and the vehicle antitheft electronic control unit 5 are connected.
[0032]
As shown in FIG. 4, a normal vehicle is provided with a door sensor 18 for detecting the opening and closing of the door for safety. In this example, the detection output is introduced into the in-vehicle receiver 12. ing. The in-vehicle receiver 12 receives the door / unlock command signal from the portable transmitter 10 and performs door unlock control. The in-vehicle receiver 12 of this example forcibly cancels the supply of the ACC pseudo signal S1 and the IG pseudo signal S2 when the detection output of the door sensor 18 is in the open state after the engine is started. When there is a door / unlock command signal, when the detection output of the door sensor 18 is in the open state, the supply of the ACC pseudo signal S1 and the IG pseudo signal S2 is extended for a predetermined time (about 30 seconds) and released. 2 IG output canceling means 12b.
[0033]
As shown in FIG. 5, when the engine is started according to the operation sequence described above, it usually means a period when a regular driver does not get on yet, but even if an unauthorized person tries to open the door and enter the vehicle, At this time, the door sensor 18 is activated, and the second IG output canceling means 12b forcibly cancels the supply of the ACC pseudo signal S1 and the IG pseudo signal S2, and therefore the engine is forcibly stopped. In addition, if there is a door / unlock command signal after the engine is started, it means that a regular driver gets on, so the second IG output canceling means 12b supplies the ACC pseudo signal S1 and the IG pseudo signal S2. Since the extension is released for a period of 30 seconds, when the driver gets on the vehicle and inserts the vehicle key and turns the key rotor to the IG output position within the extension period, the supply of the ACC pseudo signal S1 and the IG pseudo signal S2 is performed. Even if released, the IG output is not cut off, the engine does not stop, and the driver can operate the vehicle as it is . Of course Of course, if the above operation is not performed within the extended period, the engine will stop for crime prevention purposes.
[0034]
【The invention's effect】
As described above, the present invention includes a simulated body (small transmitter unit) preliminarily regarded as a vehicle key having a code corresponding to a vehicle, and a pseudo signal that is regarded as a key detection signal obtained by inserting the vehicle key. Since the engine start command means for generating the activation control signal for temporarily activating the simulated body is provided, the following effects can be obtained.
[0035]
(1) It is possible to provide an engine starter that can start an engine without a key even in a vehicle with an engine immobilizer and can be additionally equipped. Further, since the code verification can be realized by actually inserting and turning the vehicle key possessed by the driver into the key cylinder, security can be ensured.
[0036]
(2) The small transmitter unit includes a small transmitter incorporated in the vehicle key, a relay antenna, and a switch means for electrically connecting the pickup antenna or theft prevention electronic control unit and the relay antenna by an activation control signal. It can be set as the structure which has. When the switch means receives the activation control signal from the in-vehicle receiver, the switch means electrically connects the pickup antenna or the anti-theft electronic control unit and the relay antenna for the first time, and communicates between the small transmitter unit and the anti-theft electronic control unit. Therefore, the communication between the vehicle key and the antitheft electronic control unit is not batting. Also, in the vehicle key for immobilizer, since the small transmitter is embedded in the clip part without contact with the key body, the small transmitter storing the registered code can be easily taken out, Since the extracted small transmitter can be transplanted and mounted as a component of the small transmitter unit, it is not necessary to retrieve the registered code from a vehicle dealer or the like, or to decode the code that may be suspected of fraud.
[0037]
(3) Also, the activation control signal is not an on / off signal, but a serial or parallel encoded signal, and as a configuration of a small transmitter unit, modulation / demodulation electrically connected to a pickup antenna or a vehicle antitheft electronic control unit A circuit and a response circuit that is electrically connected to the modulation / demodulation circuit and receives the encoded signal and transmits a response signal to the interrogation signal. Even if a key detection signal is generated by directly connecting an ignition switch and a small transmitter unit together with an ignition switch, the small transmitter unit is not activated unless the encoded signal is known. Communication between the machine unit and the anti-theft electronic control unit is not realized, and the engine does not start. Security can be improved.
[0038]
(4) If the pickup antenna is an affixed antenna that should be fixed to the exposed end face of the key cylinder, it will not only be easy to install and prevent obstructing operation, but will also be securely within the directional range of the radiated radio wave. Communication between the pickup antenna and the anti-theft electronic control unit can be ensured.
[0039]
(5) In order to further enhance security, a configuration having an abnormality detection sensor that detects physical strength such as vibration, noise, light, etc. applied to a specific part of the vehicle and a first IG output canceling means In the period from when the engine starts until the driver gets on, if an unauthorized person breaks through a door, etc., enters the driver's seat, and steals the vehicle, the abnormality detection sensor detects vibration, noise, Since the first IG output canceling means forcibly cancels the supply of the second pseudo signal in order to detect the intensity of a physical quantity such as light, the engine is stopped and the vehicle can be prevented from getting on and off.
[0040]
(6) When the door sensor for detecting opening / closing of the door and the second IG output canceling means are provided, even if an unauthorized person tries to open the door and enter the vehicle after the engine starts, Since the door sensor is activated and the second IG output canceling means forcibly cancels the supply of the second pseudo signal and the engine is forcibly stopped, it is possible to prevent the vehicle from getting on and off. In addition, when there is a door / unlock command signal after the engine is started, the second IG output canceling means cancels the supply of the second pseudo signal by extending the time by a predetermined time. Gets on and inserts the vehicle key and turns the key rotor to the IG output position. Even if the supply of the second pseudo signal is released, the IG output is not cut off, the engine does not stop, and the driver Can operate the vehicle as it is. Of course, when the above operation is not performed within the extended period, the engine stops for crime prevention.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an engine starter according to a first embodiment of the present invention.
FIG. 2A is a side view showing a pickup antenna mounting mode in the engine starting device, FIG. 2B is a perspective view showing the pickup antenna mounting mode, and FIG. 2C shows the pickup antenna mounting mode. It is a top view.
FIG. 3 is a timing chart showing an operation sequence of the engine starter.
FIG. 4 is a block diagram showing a configuration of an engine starter according to a second embodiment of the present invention.
FIG. 5 is a timing chart showing an operation sequence of the engine starter.
FIG. 6 is a conceptual diagram showing an engine immobilizer (anti-theft device) for preventing theft of a vehicle.
[Explanation of symbols]
1. Small transmitter (transponder)
2 ... Grip part
3 ... Vehicle key
4 ... Key cylinder
5 ... Anti-theft electronic control unit (immobilizer ECU)
6 ... Key rotor
6a ... Key hole
7. Transmission / reception antenna (transmission / receiver antenna)
8 ... Vehicle side engine electronic control unit (engine ECU)
10 ... Portable transmitter
12 ... In-vehicle receiver
12a ... 1st IG output cancellation means
12b ... 2nd IG output cancellation means
13 ... Pickup antenna
14, 15 ... Small transmitter unit
14a ... Small transmitter
14b ... Relay antenna
14c ... Normally open switch means
14c.
15a ... modulation / demodulation circuit
15b ... Response circuit
16 ... Starting safety detection sensor
17 ... Abnormality detection sensor
18 ... Door sensor
S1 ... ACC pseudo signal
S2 ... IG pseudo signal
S3 ... ST pseudo signal
L1, L2. L3 ... Ignition switch signal line
L ... Power supply line for in-vehicle battery
I ... Engine start command signal
E, E '... Activation control signal
R: Communication permission signal
C ... Communication period
T: Abnormality detection signal

Claims (6)

A key detection signal generated based on insertion of a vehicle key containing a small transmitter that stores a code corresponding to the vehicle in advance into the key cylinder causes the anti-theft electronic control unit to pass through a transmission / reception antenna provided on the key cylinder. The small transmitter that radiates and receives a radio wave including an interrogation signal returns a radio wave including the code as a response signal, and the antitheft electronic control unit or the vehicle side engine electronic control means is connected via the transmission / reception antenna. to determine the suitability of said received response signals, in the engine starting device comprising a vehicle anti-theft system adapted to generate engine start enabling signal when a match,
A small transmitter unit that stores the code and can receive a response signal including the code to the anti-theft electronic control unit by receiving an activation control signal, and receives it from a portable transmitter or generates a time limit Based on the engine start command signal, the first pseudo signal corresponding to the key detection signal and the activation control signal are transmitted, and the second and third pseudo signals corresponding to at least the IG output and ST output of the ignition switch Engine start command means for transmitting the signal to the signal line of the ignition switch, and a pickup antenna provided in a reception range of the radiated radio wave of the transmission / reception antenna, and the small transmitter unit transmits the response signal via the pickup antenna. Is sent to the transmission / reception antenna. According to claim 1, wherein the small transmitter unit includes a separate small transmitter retrieved from among different vehicle key of the main key or subkey make the vehicle key and the set, the pickup antenna and electrically connectable An engine start comprising: a relay antenna for transmitting / receiving to / from the other small transmitter; and a switch means for electrically connecting the pickup antenna and the relay antenna by the activation control signal apparatus. According to claim 1, wherein the activation control signal is an engine starting device for said encoded signal der Rukoto. In any one of claims 1 to 3, wherein the pickup antenna is an engine starting device which is a patch type antenna to affix the exposed end face of the key cylinder.   The engine starting device according to any one of claims 1 to 4, wherein the pickup antenna is a coil antenna. A key detection signal generated based on insertion of a vehicle key containing a small transmitter that stores a code corresponding to the vehicle in advance into the key cylinder causes the anti-theft electronic control unit to pass through a transmission / reception antenna provided on the key cylinder. The small transmitter that radiates and receives a radio wave including an interrogation signal returns a radio wave including the code as a response signal, and the antitheft electronic control unit or the vehicle side engine electronic control means is connected via the transmission / reception antenna. to determine the suitability of said received response signals, in the engine starting device comprising a vehicle anti-theft system adapted to generate engine start enabling signal when a match,
A small transmitter unit that stores the code and can receive a response signal including the code to the anti-theft electronic control unit by receiving an activation control signal, and receives it from a portable transmitter or generates a time limit Based on the engine start command signal, the first pseudo signal corresponding to the key detection signal and the activation control signal are transmitted, and the second and third pseudo signals corresponding to at least the IG output and ST output of the ignition switch the an engine start command means for sending each to the signal line of the ignition switch, the small transmitter unit is another small retrieved from another vehicle key out of the main keys or subkeys make the vehicle key and set relay a for performing a transmitter, a transmission and reception with the antitheft electronic control unit electrically connectable at said further small transmitter And Tena, engine starting apparatus characterized by having a switching means for electrically connecting the relay antenna and the antitheft electronic control unit by the activation control signal.

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