JP4436806B2 - Vehicle security mechanism control system - Google Patents

Description

  The present invention relates to a vehicle security mechanism control system for security mechanisms such as a vehicle door lock, an immobilizer, a motorcycle luggage case, a key cover, and a security.

  As one aspect of the vehicle security mechanism control system using radio waves, there is a vehicle door lock control system that unlocks / locks the door lock of the vehicle. This vehicle door lock control system can be broadly divided into a manual type in which a user with a portable device needs to press an operation button switch provided on the portable device, and an automatic operation by simply carrying the portable device. There are automatic types that are unlocked and locked. The present invention relates to the latter automatic vehicle door lock control system.

  In the case of an automatic control system, the door can be unlocked without having to unlock it when holding the baggage, reducing the burden on the user and automatically when getting out of the vehicle. Since it is locked, it is becoming popular because it can prevent forgetting to lock.

  Briefly explaining this automatic system, a signal including an ID code for identifying itself is transmitted from a portable device. Then, the parent device installed in the vehicle controls the unlocking / locking of the door lock according to the presence / absence of reception of a signal from the portable device and the reception status (such as the electric field strength of the received signal).

  For example, if a received signal is received from a state where there is no received signal from the portable device, it can be determined that the user with the portable device is approaching the vehicle, so unlocking and receiving the received signal When it is no longer received from the existing state, it can be estimated that the vehicle has been separated from the vehicle by a certain distance or more, so control is performed to lock. It should be noted that when judging by the presence or absence of the received signal in this way, it will be erroneously determined when the signal is not transmitted from the portable device due to the failure of the portable device or running out of the battery, etc. The unlocking / locking is controlled depending on whether or not the threshold (judgment criterion) is exceeded.

  On the other hand, a portable device uses a battery as its power source, and it is necessary to constantly emit radio waves to automatically control the unlocking / locking of the door lock. Power saving is achieved by causing intermittent transmission to be performed. Therefore, even if the reception level (electric field strength) is set so that it is unlocked 1 meter before the vehicle, if the portable device is intermittently operated to send a signal every second, If a person approaches at a speed of 1 meter per second and a signal is not sent 1 meter before, there will be a situation where unlocking will not occur unless a maximum of one second is waited in front of the door.

  Similarly, in the locking operation when getting off the vehicle, even if the electric field strength is set so as to lock at a position 1 m away from the vehicle, if the output signal is issued immediately before 1 m, the locking is not performed at that stage. Locking is performed based on an output signal generated after one second. Therefore, when the vehicle is separated at a speed of 1 m / sec, it is actually locked at a position about 2 m away from the vehicle. Thus, it cannot be unlocked / locked at an appropriate position.

  In addition, the electric field strength is not stable depending on the surrounding environment, and a body effect may occur depending on how the portable device is held, and also changes depending on the location of the parent device. Locking and unlocking cannot be performed at a predetermined distance only by comparing the strength.

  The door lock control system automatically locked / unlocked targeted by the present invention is in a state where it is originally locked when going to a convenience store for shopping or when there is a home near the parking lot. Although the situation should be, there may be situations where the user who owns the portable device cannot be locked because the user is nearby or the lock / unlock is repeated. This occurs when the portable device is near the vehicle, and the electric field strength becomes greater than or equal to a predetermined value or around a predetermined value. However, it is desired that locking can be performed accurately even in such a situation.

  In addition, in the retrofit type vehicle door lock control system, wiring for confirming the locked state of the door is not performed in order to reduce the mounting work to the vehicle. Therefore, in the locking / unlocking operation of this system, it is not necessary to check whether the door is actually unlocked or locked, and perform the locking / unlocking operation. The operation command signal issued by the device may be stored, and if the operation command signal is the same as that previously issued, the operation command signal may not be output. Thereby, although the operation command signal of the same content is output many times, it can be suppressed.

  Therefore, for example, when the owner (driver) of the portable device stops the engine and falls below a predetermined electric field strength, the door is locked as if the driver got off the vehicle. However, when there is a passenger in addition to the driver, the passenger may get off after locking the door when the driver gets off. At that time, since the door is already locked, the passenger manually unlocks the door, but in this case, the master unit of the vehicle door lock control system is already instructed to lock the operation command signal. Is not output until the driver unlocks it again. In such a situation, the door is not locked, causing a safety problem.

  In addition to unlocking / locking the door lock, there is an immobilizer that is one of anti-theft systems as a vehicle security mechanism that operates by remote control operation from a portable device. This immobilizer also needs to be securely set (locked with a door lock) when getting off, and thus causes the same problem as described above.

  Further, as one of anti-theft systems for motorcycles, there is a security mechanism such as a lock by a wheel key or a handle lock. In addition, for the purpose of preventing theft and mischief, there is a type in which an engine key portion that is normally exposed is closed with a key cover that can be opened and closed when getting off the vehicle. In some such systems, a portable device is manually operated in order to activate a security mechanism for opening and closing the lock and key cover.

  Even when these portable devices are automatically controlled just by carrying the portable device in the same manner as the door lock control system described above, it is necessary to securely lock the portable device after getting off.

  The present invention has been made in view of the above-described background, and an object of the present invention is to automatically and reliably perform unlocking / locking and the like simply by moving the user while holding the portable device. In addition, the present invention provides a vehicle security mechanism control system that can reliably hold a security set state (locked state or the like) after getting off.

  In order to achieve the above-described object, a vehicle security mechanism control system according to the present invention includes a portable device that transmits an output signal and a vehicle security mechanism (such as a door lock) based on the output signal that is transmitted from the portable device. ), And a master unit that receives the output signal, and an input level determination unit that determines an input level of the output signal received by the receiver unit. , A determination criterion control unit that controls a predetermined determination criterion of the level determination unit, and a control unit that controls the security mechanism based on the output of the input level determination unit (in the embodiment, “door lock control unit”) The determination criterion control means generates an operation command signal to release the security mechanism from the control means (in the embodiment, “unlock”). During After a predetermined time, and configured to increase the criterion of the input level judging means when the output of the input level determining means is determined not to be lower than the criterion in succession a predetermined time.

  For example, in the case of a convenience store etc., there is a store in the immediate vicinity of the parking lot, so if the driver is in the store, the portable device will be near the parent device, and the door lock will be inadvertently unlocked. There is a possibility that various security mechanisms may be released or a malfunction may occur such as repeated set / release operations (locking / unlocking). The same applies when there is a home or the like adjacent to the parking lot. The set operation is an operation that should be accompanied by getting off the vehicle, such as locking the door lock, and the release operation is to release the set state by the above set operation, such as unlocking the door lock.

  In the present invention, after the unlocking operation when the first electric field strength (input level) becomes equal to or higher than the criterion after the driver leaves, the reception level fluctuates when the state continues higher than the criterion or near the criterion. If the input level is lower than the determination criterion (when the input level does not occur continuously (stably)), the determination criterion is increased to make it easy to lock. Therefore, the unlocked area is closer to the parent device, and is not released (unlocked) even when in the store or at home, and the set state (locked state) is maintained.

  Further, as another solution means, a portable device that outputs an output signal, and a parent device that outputs an operation command signal to a security mechanism of a vehicle based on the output signal transmitted from the portable device, The master unit includes a receiving unit that receives the output signal, an input level determining unit that determines an input level of the output signal received by the receiving unit, and a determination criterion control that controls a predetermined determination criterion of the level determining unit Means, control means for controlling the security mechanism based on the output of the input level determination means, and auxiliary input level determination means for determining the input level of the output signal received by the reception means, The determination reference control unit outputs the auxiliary input level determination means for a predetermined time after an operation command signal is issued to release the security mechanism from the master unit. Time sequentially input level is preferably set high the criterion when a predetermined value or more.

  The auxiliary input level corresponds to the second input level determination unit 28 in the embodiment. In this way, a threshold value (standard determination criterion) for controlling actual release / set operation (unlocking / locking) and a threshold value for determining whether or not it is necessary to switch the determination criterion. Each (input level) can be set independently, and more accurate processing can be performed.

  Further, as another solution means, a portable device that outputs an output signal, and a parent device that outputs an operation command signal to a security mechanism of a vehicle based on the output signal transmitted from the portable device, The master unit includes a receiving unit that receives the output signal, an input level determining unit that determines an input level of the output signal received by the receiving unit, and a determination criterion that controls a predetermined determination criterion of the input level determining unit Control means; control means for controlling the security mechanism based on the output of the input level determination means; and stability determination means for determining the stability of the input level of the output signal, the determination criterion control means Can be configured to increase the criterion of the input level determination unit when the stability determination unit determines that the input level does not change within a predetermined time. .

  Further, on the premise of each of the above-described inventions, the master unit has reception determination means for determining whether or not a signal from the portable device is received based on the output signal, and the determination criterion control means includes: When the reception determination means determines that the signal from the portable device is not received, the determination criterion can be set low.

  As another solution, a portable device that outputs an output signal and a parent device that outputs an operation command signal to the security mechanism of the vehicle based on the output signal transmitted from the portable device are provided. The master unit includes a receiving unit for receiving the output signal, an input level determining unit for determining an input level of the output signal received by the receiving unit, and a security mechanism based on an output of the input level determining unit. Control means for performing the control of, and stability determination means for determining the stability of the input level of the output signal, the control means, the input level determination means has received a signal of a predetermined level or more, And when the said stability determination means determines with the input level being stable for the predetermined time, it is comprised so that a setting operation | movement may be performed.

  Even if the input level is equal to or higher than the predetermined level as in the present invention, the setting operation (locking) is forcibly performed when the input level is stable. As a result, even when the determination criterion is increased, even when the setting operation cannot be performed, the setting can be performed immediately and the stability is improved.

Still another solution includes a portable device that outputs an output signal, and a parent device that outputs an operation command signal to a security mechanism of a vehicle based on the output signal transmitted from the portable device. A control unit that controls the security mechanism based on an output of the receiving unit that receives the output signal, an input level determining unit that determines an input level of the output signal received by the receiving unit, and an output of the input level determining unit Control means; key state determination means for determining the state of the engine key of the vehicle; and reception determination means for determining whether or not a signal from the portable device is received from the output signal, the door lock control means, signals from the reception determination means the portable device after the control means from said key-state determining means determines that the engine key is turned off makes a operation for the first locking May be configured to be so that the operation for locking again in response to the determination that the received non.

  With such a configuration, for example, the owner (driver) of the portable device first gets off the vehicle, goes away from the vehicle, and is automatically locked or the like according to the present invention. Even when the security mechanism (for example, door lock) is released, the door is locked once and then forcibly locked again, so that the door can be securely locked.

  In the present invention, the user can set / release (lock / unlock, etc.) the security mechanism automatically and reliably only by moving while holding the portable device, and set securely after getting off the vehicle. The state can be maintained.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. Each embodiment shown below shows the example applied to the vehicle door lock control system which controls the unlocking / locking of the door lock which is one form of the vehicle security mechanism control system.

  FIG. 1 shows a first embodiment of a vehicle security mechanism control system (vehicle door lock control system) according to the present invention. As shown in the figure, a portable device 10 having a transmission function and a parent device 20 that performs opening / closing control on the door lock based on a signal transmitted from the portable device 10 are provided. That is, a signal is intermittently transmitted from the portable device 10, and the parent device 20 outputs an unlocking and locking command to the door lock according to the state of the received signal. That is, when the user approaches the vehicle simply by carrying the portable device 10, it is automatically unlocked, and when the user leaves the vehicle, locking is performed. The specific configuration is as follows.

  First, the portable device 10 modulates the code information generated by the code generator 11 and the code generator 11 that generates a code for specifying an ID for identifying itself, an instruction for the parent device 20, and the like. A transmitter 12 for generating an output signal composed of an analog signal and transmitting the output signal via the transmission antenna 13, and a transmission control unit 14 for controlling the operations of the code generator 11 and the transmitter 12. I have. The transmission control unit 14 performs, for example, intermittent drive control.

  The master unit 20 includes a receiving unit 22 that receives the output signal captured via the receiving antenna 21, an input level determining unit 23 that determines an input level of the output signal received by the receiving unit 22, and an input level determining unit. The door lock control unit 24 that controls the door lock based on the determination result 23 is provided.

  As shown in FIG. 2, the receiving unit 22 converts it to an intermediate frequency via the RF unit 22a and the IF unit 22b, and further demodulates the demodulating unit 22c. Then, the demodulated received signal is analyzed by the code determination unit 22d, and it is determined whether the signal received from the ID code or the like is an output signal from the corresponding portable device 10, and the determination result is controlled by the door lock control. To part 24. The output of the IF unit 22b is also given to the RSSI unit 22e, and the received input level information (S meter output) is given to the input level determination unit 23. The input level information can be output in either analog or digital form.

  The input level determination unit 23 determines whether or not the input level of the received output signal is equal to or higher than a threshold value (determination criterion). That is, when there is no obstacle or the like between the portable device 10 and the parent device 20, the input level increases as the distance between the two becomes shorter.

  Accordingly, when the input level of the output signal is equal to or higher than the threshold value (determination criterion), the door lock control unit 24 determines that the vehicle is approaching and unlocks the door lock. If it is less than the threshold value, it is determined that the vehicle is away from the vehicle, and the door is locked. Specifically, an unlock / lock command is output to the device that actually performs the unlock / lock.

  That is, the door lock control unit 24 may output an unlock / lock command signal when the determination results of the previous time and this time are different. Therefore, the previous determination result is stored in the memory, and if the current determination result is different, any command signal is output.

  Furthermore, since this embodiment is a vehicle door lock control system that is automatically unlocked / locked based on the positional relationship between the portable device 10 and the parent device 20, it is not necessary when the vehicle engine is in operation. In order to avoid such an operation, the parent device 20 has a function of not performing the locking / unlocking operation regardless of the presence / absence of a signal from the portable device.

  The master unit 20 operates when the engine is turned off for such a function. Therefore, when the operation starts, the driver who owns the portable device 10 is in the driver's seat, so the distance between the portable device 10 and the parent device 20 is the closest, and the electric field strength is in the saturation region. Is common. Therefore, the determination result of the input level determination unit 23 is “above the determination criterion”, and if it is normal, the door lock control unit 24 issues a door unlocking command. When stopped, the unlocking is not performed until the first locking operation is performed.

  Thus, for example, if the reception level of the output signal when the distance between the parent device 20 and the portable device 10 is 5 m is set as a basic determination criterion (threshold value), The unlocking operation is performed when the position of the portable device 10 is further than 5 m from the parent device 20 and the position of the portable device 10 when the output signal is transmitted is closer than 5 m. Accordingly, if the portable device 10 outputs an output signal at intervals of 1 second and the user walks at 1 m per second, the user is unlocked 3 m or more from the vehicle. Actually, the walking speed is faster than 1m per second and the reception level fluctuates depending on the surroundings. However, if 5m is used as a reference as described above, it will surely be solved when it reaches the door. Locked. Of course, the present invention does not require 5 m as an essential requirement, but is merely an example, and may be shorter or longer. Since each of the above-described configurations is the same as the conventional one, detailed description thereof is omitted.

  On the other hand, if the reference position to be unlocked in this way is a position 5 m away, the vehicle is locked at a predetermined position at least 5 m away after getting off. Therefore, there is no problem if you leave the car as it is, but if you enter the store with the vehicle parked in a parking lot at a convenience store, for example, or if you are in the immediate vicinity of the parking lot, Even if a user (driver) with a later portable device is once locked 5m or more, he or she may move within the store or room and enter the range within 5m from the vehicle. It will be unlocked. Furthermore, when the vicinity of the 5 m boundary is moved, locking and unlocking may be repeatedly performed.

  Therefore, in the present invention, a determination reference control 25 for controlling a determination reference (threshold value) when the input level determination unit 23 performs the determination process is provided, and the determination reference is changed according to the situation. That is, the determination criterion control unit 25 sets the determination criterion based on the outputs of the door locking control unit 24 and the input level determination unit 23.

  Specifically, the input level is set for a predetermined time after the operation command signal (unlock command) is issued to unlock the vehicle door from the door lock control unit 24 (timer 25a is started and timed). When it is determined that the output of the determination unit 23 is not continuously lower than the standard determination criterion for a certain period of time, the determination criterion is increased. Thereby, while the criterion is high, the region where the input level is equal to or higher than the criterion is narrow (within a range close to the vehicle).

  Thus, for example, after getting off the vehicle, after the driver is locked away from the vehicle and then moves closer to the vehicle within a certain time and is unlocked, the determination criterion becomes high, so that the driver is easily locked.

  In other words, if the standard judgment criterion is an input level corresponding to a separation distance of 5 m and the high judgment criterion is an input level corresponding to a separation distance of 1 m, the vehicle is temporarily locked at a distance of 5 m or more and then moved, for example, in a convenience store. Or entering the home adjacent to the parking lot and entering the area within 5 meters from the vehicle, it is unlocked. And if it continues being located in the area | region within 5 m, the determination result in the input level determination part 23 will become more than a threshold value continuously, and will remain unlocked.

  In such a state, since it is determined that the output of the input level determination unit 23 does not become lower than the standard determination standard continuously for a certain period of time, the determination standard is high, and if it is not in an area within 1 m, it is below the determination standard. . Therefore, in many cases, a locking command is issued. Therefore, even if it moves in the vicinity of a vehicle after that, if it is in the range far from 1 m, it will be suppressed from being unlocked again. In addition, when boarding as it is, since it is located within 1 m naturally, since it is unlocked, there is no problem.

  In addition, after unlocking, when moving around the boundary of 5 m and repeatedly exceeding or exceeding the criterion (when the reception level fluctuates near the standard criterion), Since it does not occur continuously (stable) that the input level becomes lower than the criterion, the criterion is increased to make it easy to lock. This prevents the unlock / lock command from being alternately output by moving around the boundary.

  It should be noted that the high judgment criterion may be one type as in the above-described embodiment, and may be switched between two steps of high / low (standard), but a plurality of judgment criteria are also provided for the high judgment criterion. The determination may be made in a stepwise manner, such that the determination is made with a determination criterion one step higher, and if the input level is still high (unstable), the determination criterion is set to a higher step. As a result, the influence on the unlocking operation is reduced without unnecessarily increasing the determination criterion.

  FIG. 3 shows a second embodiment of the present invention. This embodiment also corresponds to the case where the driver is near after getting off. In the present embodiment, since the portable device 10 can have the same configuration as that of the first embodiment, only the different parent device 20 will be described (this point is another embodiment described below). The same applies to. In this embodiment, the threshold of the input level when determining whether or not to increase the determination criterion is different from that of the first embodiment.

  That is, in the first embodiment, since the output of the input level determination unit 23 is given to the door lock control unit 24 and the determination reference control unit 25, a determination criterion (unlocking (locking)) In the above-described specific example, the threshold value of the input level when determining whether or not to raise the determination criterion is the same value as 5 m).

  On the other hand, in the present embodiment, the signal received by the receiving unit 22 is given to the first input level determining unit 27, where the input level is equal to or higher than the determination criterion according to the determination criterion set by the determination criterion control unit 25. The determination result is given to the door lock control unit 24. That is, the first input level determination unit 27 in the present embodiment has the same function as the input level determination unit 23 in each of the above embodiments.

  Here, in this embodiment, the output of the receiving unit 22 is also given to the second input level determination unit 28, and it is determined whether or not the input level of the received output signal from the portable device 10 is equal to or lower than the second determination criterion. The determination result is given to the determination reference control unit 25. Accordingly, the second determination criterion can be set to a level different from the determination criterion for controlling unlocking / locking in the first input level determination unit 27, and a value suitable for unlocking / locking control, Since values suitable for switching the determination criteria can be set, more accurate control can be performed. Of course, even with such a configuration, it is not disturbed that the standard determination standard in the first input level determination unit 27 and the second determination standard have the same value. When the same value is used, the configuration is substantially equivalent to that of the first embodiment.

  In addition, with such a configuration, for example, when there are a plurality of determination criteria of the first input level determination unit 27, in the first embodiment, it is determined whether or not to switch the level every time the determination criterion changes. Although the reference (second determination reference in the present embodiment) also varies, in the present embodiment, the same value can be taken regardless of switching of the determination reference.

  Note that according to the present embodiment, a new determination unit called the second input level determination unit 28 is added (the first input level determination unit 27 is equivalent to the input level determination unit 23 only with a different name). Actually, the first input level determination unit 27 can be used as a circuit, and if the input level is A / D converted, it can be processed by software. Therefore, the circuit configuration is not substantially increased. In addition, since another structure and an effect are the same as that of each above-mentioned embodiment, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted.

  FIG. 4 shows a third embodiment of the present invention. In the present embodiment, for example, it is suitable when there is a parking lot near the house and locking is not possible. That is, the basic configuration for unlocking / locking control is the input level of the output signal from the corresponding portable device 10 received by the receiving unit 22 via the receiving antenna 21 as in the above embodiments. Is determined by the input level determination unit 23, and the door lock control unit 24 determines whether or not unlocking / locking is necessary based on the previous and current determination results, and performs control as necessary. The command is output. Also in this embodiment, the determination standard in the input level determination unit 23 is set by the determination standard control unit 25.

  In the present embodiment, conditions when the determination reference control unit 25 sets the determination reference are different. That is, the output of the receiving unit 22 is also given to the stability determining unit 29, and the stability of the input level of the output signal received by the receiving unit 22 is determined. And the determination result of stability is given to the determination reference control part 25, and the determination reference control part 25 sets a determination reference based on the presence or absence of stability.

  Specifically, the stability determination unit 29 monitors the fluctuation of the input level, and determines whether it is within a certain range within a predetermined time counted by the timer 29a, or whether it is above a certain threshold value. . And when a certain high input level is hold | maintained, since it means that the portable device 10 exists by the side of the vehicle, the determination reference | standard control part 25 makes the determination reference | standard of the input level determination part 23 high. Set as follows.

  With such a configuration, for example, when there is a parking lot in the immediate vicinity of the home, the parent device 20 on the vehicle may exist at a position 2 m from the wall of the room. In such a case, if the standard judgment standard is left as it is, it cannot be locked or the operation is unstable, but if this configuration is used, the judgment standard becomes high, so the input level is surely below the judgment standard and locked. The

  Usually, when the user is at home, the portable device is often placed at a predetermined place, and in this case, the input level is in a stable state, so that the locking can be performed by increasing the determination criterion. If a plurality of determination criteria are prepared and the same state continues even if the above-described switching is performed, a more accurate operation can be performed by further increasing the determination conditions. Since other configurations and operational effects are the same as those of the above-described embodiments, detailed description thereof is omitted.

  FIG. 5 shows a fourth embodiment of the present invention. This embodiment is based on the first embodiment, and further includes a reception determination unit 30 that determines whether or not an output signal from the portable device 10 is received. That is, since the output signal is intermittently transmitted, the reception determination unit 30 receives the output of the reception unit 22 and determines that the signal is not received if the signal is not received for a certain period. .

  The output of the reception determination unit 30 is given to the determination criterion control unit 25. Therefore, when the reception determination unit 30 determines that the signal from the portable device 10 is not received, the determination criterion control unit 25 sets the determination criterion low. That is, in the case of setting of high / low two steps, control is performed so as to return to the standard determination criterion. When there are a plurality of determination criteria other than the standard determination criteria, the determination criteria may be returned to the standard determination criteria, or other determination criteria (for example, a determination criterion that is one step lower than the current determination criteria) may be set. You may do it.

  That is, when the radio wave of the portable device 10 is not received, the driver (the user who holds the portable device 10) is not near the vehicle, so the determination level is set low regardless of the previous setting, and the driver is again Return to the situation where unlocking is easy when you come.

  Note that the reception determination unit 30 not only determines whether there is reception as described above, but also, for example, when a predetermined level signal is not received or when the output signal from the portable device 10 is demodulated does not match It may be determined that the signal from the portable device 10 is not received. Furthermore, the input level determination unit 23 can be provided with a determination criterion as to whether or not the output signal from the portable device 10 can be detected, and the input level determination unit 23 can also be used as the reception determination unit 30.

  Since other configurations and operational effects are the same as those in the first embodiment, detailed description thereof is omitted. The function of lowering the criterion when not receiving is not specifically shown, but is not limited to the first embodiment, and the other embodiments described above and various types described below. Of course, this embodiment can be applied.

  FIG. 6 shows a fifth embodiment of the present invention. Similarly to the third embodiment, this embodiment is also suitable when there is a parking lot near the house and cannot be locked. That is, the basic configuration for unlocking / locking control is the input level of the output signal from the corresponding portable device 10 received by the receiving unit 22 via the receiving antenna 21 as in the above embodiments. Is determined by the input level determination unit 23, and the door lock control unit 24 determines whether or not unlocking / locking is necessary based on the previous and current determination results, and performs control as necessary. The command is output.

  In the present embodiment, the input level information (output of the RSSI unit) output from the receiving unit 22 is given to the stability determining unit 29 to determine the stability of the input level. Then, the determination result of the presence or absence of the stability is given to the door lock control unit 24.

  When the input level determination unit receives a signal of a predetermined level or more and the stability determination unit 29 determines that the input level is stable for a predetermined time, the door lock control unit 24 Lock.

  That is, in this embodiment, even if the input level is equal to or higher than a predetermined level (judgment criterion), when the input level is stable, forcibly locking the same as in the fourth embodiment The effect can be demonstrated. Moreover, by adopting such a configuration, even when the determination criterion is high, even when locking is impossible, locking can be performed immediately and stability is improved. In addition, since another structure and an effect are the same as that of each above-mentioned embodiment, the corresponding member attaches | subjects the same code | symbol and the detailed description is abbreviate | omitted.

  FIG. 7 shows a sixth embodiment of the present invention. The basic configuration for unlocking / locking control in this embodiment is the same as that in each of the above-described embodiments, and the output from the corresponding portable device 10 received by the receiving unit 22 via the receiving antenna 21. The input level determination unit 23 determines whether or not the input level of the signal is equal to or higher than the determination criterion, and the door lock control unit 24 determines whether or not unlocking / locking is necessary based on the previous and current determination results. Control commands are output in response to the above.

  And in this Embodiment, the reception determination part 30 which determines whether the output signal from the portable device 10 is received is provided similarly to 4th Embodiment. That is, since the output signal is intermittently transmitted, the reception determination unit 30 receives the output of the reception unit 22 and determines that the signal is not received if the signal is not received for a certain period. .

  The output of the reception determination unit 30 is given to the forced locking unit 33. As will be described later, the forced locking unit 33 gives a locking command to the door lock control unit 24 regardless of the input level and forcibly locks.

  Further, in the present embodiment, a key state determination unit 35 that determines the state of the engine key of the vehicle is provided. The key state determination unit 35 checks whether or not the engine is started in the state of the vehicle battery voltage or alternator noise, and determines that the engine key is off when the engine is not started. Alternatively, it may be determined that the engine key is off when the accessory power is supplied and monitored.

  In the present embodiment configured as described above, each processing unit realizes the following functions. That is, the door lock control unit 24 determines that the reception determination unit 30 receives the first lock signal from the portable device 10 after the door lock control unit 24 issues the first lock signal after the key state determination unit 35 determines that the engine key is turned off. In response to determining that the signal has not been received, a lock signal is issued again.

  That is, since the door lock control unit 24 receives the output signals from the key state determination unit 35 and the input level determination unit 23, if the lock signal is issued after the engine key is turned off, the door lock control unit 24 notifies the forced lock unit 33 to that effect. Notice. Then, after receiving the notification, the compulsory locking unit 33 instructs the door lock control unit 24 to perform a compulsory locking command when the reception determination unit 30 determines that the output signal from the portable device 10 has not been received. In response to the issuance request, the door lock control unit 24 issues a lock signal again.

  Such a configuration functions effectively in the following state. That is, when the owner (driver) of the portable device 10 stops the engine and moves away after getting off the vehicle, the door is locked when the driver gets off when the electric field strength becomes lower than a predetermined electric field strength. At this time, when there is a passenger in addition to the driver, the passenger may get off after locking the door when the driver gets off. At that time, since the door is already locked, the passenger manually unlocks the door.

  At this time, when the driver is already away from the predetermined distance and the radio wave from the portable device cannot be received, the unlocking / locking command is not issued. In addition, even if an output signal is received, if the function of this system is implemented so that a command with the same content as the previously issued unlocking / locking command is not output continuously, Since the device has already output the operation command signal to lock it, the locking operation is not performed until the driver unlocks it again.

  However, in the present embodiment, since the door is once locked and then forcibly locked again, even if a manual unlocking operation is performed during that time, the door can be reliably locked.

  In practice, the following operation is performed. That is, if the output signal from the portable device 10 is transmitted at intervals of 1 second, the signal of the portable device 10 is received from when the engine key is turned off, and the signal is lower than the predetermined electric field strength. When locking the door. The forced locking unit 33 operates a timer from the time when the door is locked, and outputs an operation command signal to forcibly lock the door when a state lower than the predetermined electric field strength continues for a predetermined time.

  In order to prevent malfunction due to the environment of the reception determination unit 30, it is desirable to provide a delay unit or the like. Further, the forcible locking unit 33 may output an operation command signal to lock the passenger after a time considering the time when the passenger finishes getting off the vehicle later.

  In this embodiment, it is described that the input level determination unit 23 and the reception determination unit 30 are provided separately. However, in practice, the predetermined level of the input level determination unit 23 is switched and shared. Also good.

  FIG. 8 shows a seventh embodiment of the present invention. The function of this embodiment corresponds to that of the first embodiment. That is, in each embodiment described above, the RSSI unit 22e is provided in the receiving unit 22, and the input level is directly compared with the determination criterion by the input level determining unit 23. However, in the present embodiment, it is indirectly determined. Like to do.

  That is, the RF unit 22a is provided with an attenuation setting unit 22f (attenuator), and the determination reference control unit 25 sets the determination reference by controlling ON / OFF of the reduction setting unit 22f. That is, in the standard, the attenuation setting unit 25f is turned off, and the received signal is supplied to the IF unit 22b without being attenuated. Thereby, even if it is the output signal transmitted from the portable device 10 at a relatively far position, the code determination unit 22d is synchronized and the ID code is recognized. Of course, if the distance is greater than a certain distance, the influence of noise cannot be ignored, synchronization cannot be achieved, and the ID code cannot be identified.

  On the other hand, when the determination reference control unit 25 determines that the determination reference should be increased based on the outputs of the door lock control unit 24 and the code determination unit 22d of the reception unit 22, the attenuation setting unit 22f is turned on. . Then, since the signal level output from the RF unit 22a is attenuated, if it is not an output signal transmitted from the portable device 10 at a relatively close position, the signal level is attenuated and the influence of noise becomes strong, and the ID code is recognized. It will not be done.

  That is, it can be determined whether or not the input level is equal to or higher than the criterion based on whether or not the ID code can be normally determined by the code determination unit 22d, and the attenuation setting unit 22f is switched ON / OFF. Thus, the criterion can be increased or decreased. In this embodiment, the code determination unit 22d and the like realize the function of the input level determination means.

  Since other configurations and operational effects are the same as those of the first embodiment described above, the same reference numerals are assigned to corresponding members, and detailed descriptions thereof are omitted. In the present embodiment, the attenuation setting unit 22f is provided in the RF unit 22a. However, it may of course be provided separately before the RF unit 22a. In the illustrated example, the example applied to the first embodiment is shown, but it is needless to say that the present invention can be applied to other embodiments.

  In each of the above-described embodiments, the vehicle door is applied to the vehicle door lock as a security mechanism, and is a locking process as a set operation when getting off, and an unlocking operation as a release operation when getting on. Although an example applied to a lock control system has been shown, the present invention is not limited to this, and is applied to a control system for a vehicle security mechanism such as a trunk lock, an immobilizer, a luggage case of a motorcycle, a key cover, and a security. Can do.

  In other words, in the case of an immobilizer, it is automatically set when you get off just by carrying the portable device, and it gets released when the distance between the portable device and the parent device installed in the vehicle approaches and the engine can be started can do. And similarly to the locking in the door lock, the setting operation can be performed reliably, and the antitheft effect is improved.

  In addition, some luggage cases (including helmets) of motorcycles (including bicycles) are also equipped with locks to prevent theft. The driver follows the same principle as the door lock control system. It is automatically unlocked when approaching a motorcycle and locked when it leaves. Moreover, it is securely locked when getting off.

  Similarly, the set operation (a kind of locking) and the release (a kind of unlocking) in a wheel, a handle lock, etc. in a two-wheeled vehicle can be performed automatically and reliably when getting off.

  Furthermore, in recent motorcycles, a key cover that can cover the engine key part is mounted. When getting off, the exposed part of the engine key part is closed (set) with the key cover, and when driving, A system in which the key cover is moved and the engine key part is exposed (released) and the key is inserted to start the engine has been put into practical use. The key cover can be automatically opened and closed by this system, and the engine key portion can be reliably closed (set operation) with the key cover when getting off the vehicle.

  In each of the above-described embodiments, the output signal from the portable device is intermittently transmitted (predetermined intervals), but the stop period during the intermittent operation is not necessarily constant. Furthermore, it is possible to transmit continuously without intermittent.

1 is a block diagram showing a first embodiment of a vehicle door lock control system which is an aspect of a vehicle security mechanism control system according to the present invention. It is the block diagram which showed the internal structure of the receiving part. It is a block diagram which shows 2nd Embodiment of the vehicle door lock control system which is one aspect | mode of the vehicle security mechanism control system which concerns on this invention. It is a block diagram which shows 3rd Embodiment of the vehicle door lock control system which is one aspect | mode of the vehicle security mechanism control system which concerns on this invention. It is a block diagram which shows 4th Embodiment of the vehicle door lock control system which is one aspect | mode of the vehicle security mechanism control system which concerns on this invention. It is a block diagram which shows 5th Embodiment of the vehicle door lock control system which is one aspect | mode of the vehicle security mechanism control system which concerns on this invention. It is a block diagram which shows 6th Embodiment of the vehicle door lock control system which is one aspect | mode of the vehicle security mechanism control system which concerns on this invention. It is a block diagram which shows 7th Embodiment of the vehicle door lock control system which is one aspect | mode of the vehicle security mechanism control system which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Portable device 11 Code generator 12 Transmitter 13 Transmitting antenna 14 Transmission control part 20 Parent unit 21 Reception antenna 22 Reception part 23 Input level determination part 24 Door lock control part 25 Judgment reference control part 25a Timer 27 1st input level determination part 28 Second input level determination unit 29 Stability determination unit 29a Timer 30 Reception determination unit 29 Stability determination unit 33 Forced locking unit 35 Key state determination unit

Claims (1)

A portable device for sending an output signal;
Based on the output signal sent from the portable device, comprising a parent device that outputs an operation command signal to the security mechanism of the vehicle,
The master unit includes receiving means for receiving the output signal;
Input level determining means for determining an input level of the output signal received by the receiving means;
Control means for controlling the security mechanism based on the output of the input level determination means;
Key state determination means for determining the state of the engine key of the vehicle;
Receiving determination means for determining whether or not a signal from the portable device is received based on the output signal;
The control means receives the signal from the portable device after the control means performs the first locking operation after the key state determination means determines that the engine key is turned off. security mechanism control system for a vehicle, wherein to Rukoto the operation for locking again in response to the determined not to be.

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