JP6451390B2 - Motion detection system - Google Patents

Description

  The present invention relates to a motion detection system used for automobiles and the like. More specifically, the present invention relates to a motion detection system that switches between intrusion detection into a vehicle and occupant motion detection for controlling an in-vehicle device depending on the state of the vehicle.

  In preparation for theft of automobiles or the like, a security system has been proposed that issues an alarm or reports when an abnormality occurs in a vehicle (see, for example, Patent Document 1). The security system described in Patent Document 1 switches from a state such as a key switch or a door lock to each mode such as a stop mode, a standby mode, and a warning mode, and a motion sensor such as an infrared pyroelectric sensor or an ultrasonic sensor in the warning mode. When a movement of a person or an object is detected in the vehicle interior, it is determined that the vehicle has entered and an alarm operation is performed.

  On the other hand, in order to enable the user to operate various devices while looking forward while driving, the user recognizes the operation by detecting the user's hand gesture, etc., and operates the target device based on it The technique of inputting is known. For example, there is a non-contact type information input device that detects a user's hand using an imaging unit and operates and adjusts an in-vehicle device according to instruction information indicated by the shape of the hand (see Patent Document 2).

JP 07-47926 A Japanese Patent Laid-Open No. 2005-50177

As described above, in the security system described in Patent Document 1, a motion sensor that detects an abnormal state in the passenger compartment is used in the warning mode at the time of parking. It has not been studied for use in the system and is a system that is not used when not parked. Further, in the non-contact type information input device described in Patent Document 2, a sensor (imaging means) is used for the purpose of detecting hand movement of an occupant during driving of the vehicle. It is not considered to be used for anything other than that, and it is a useless system when parking.
These conventional systems are common in that the movement of a person or an object in the passenger compartment is detected by a sensor. Therefore, it is conceivable to use one motion sensor as an operation input device for an on-vehicle device by monitoring the intrusion of a person at the time of parking and detecting an occupant's motion while traveling. However, the motion sensor for detecting the intrusion into the passenger compartment and the motion sensor for detecting the occupant's motion differ in the range in which motion should be detected, sensitivity, and the like. For example, motion sensors used for security during parking are relatively wide, so they are not suitable for detecting the movement of passengers in a specific seat, and detection sensitivity for detailed movements is also insufficient. There is a problem that erroneous determination of the movement of the occupant occurs. Further, even if the motion sensor can be switched and used, there is a problem in switching the intrusion monitoring function for security and the occupant motion detection function in consideration of safety.

  The present invention has been made in view of the above-described situation, and switching between detection of intrusion into a vehicle and detection of an occupant's operation for controlling an in-vehicle device can be performed according to the state of the vehicle, and optimal sensing can be performed for each. An object of the present invention is to provide a motion detection system.

In order to solve the above problem, a motion detection system according to a first aspect of the present invention is a vehicle information acquisition system that acquires vehicle information including a motion sensor that detects a motion of a person or an object in a vehicle compartment, and engine operation and door lock of the vehicle. And a security mode for detecting a motion of a person or an object in the passenger compartment by the motion sensor and issuing a predetermined alarm when it is determined to be abnormal, and detecting an occupant operation in the passenger compartment by the motion sensor, A control unit that operates in an operation detection mode that controls a predetermined in-vehicle device corresponding to the operation; and a vehicle state of the vehicle is determined based on vehicle information acquired by the vehicle information acquisition unit; Switching means for switching the operation of the control means to the security mode or the operation detection mode, and the switching means is that the vehicle is in a parking state. When you cross is to shift the control means to the security mode, when said vehicle is judged to be a non-parking state transitions the said control means to said operation detection mode, and the security mode and the operation detection mode By changing at least one of the number, sensitivity, and detection range of the motion sensors, it is possible to detect the movement of a person or an object in the entire vehicle interior in the security mode, and for each seat in the operation detection mode. The gist of the present invention is that the motion of the passenger can be detected, and the sensitivity of the motion sensor is higher in the operation detection mode than in the security mode .
In a second aspect based on the first aspect, the switching means determines the non-parking state when the engine is operated, and determines the parking state when the engine is stopped and the door is locked. This is the gist.
According to a third invention, in the first invention, the switching means determines that the engine is not parked when the engine is operated, the engine is stopped, the door is locked, and the movement is predetermined by the motion sensor. When the time is not detected, the gist is to determine the parking state.
According to a fourth aspect of the present invention, in any one of the first to third aspects, the control unit includes a standby mode in which the detection result of the motion sensor is ignored, and the switching unit is configured such that the door lock is released and the engine is stopped. If it is determined that it is in a standby state, the gist is to shift the control means to the standby mode.
The fifth invention is characterized in that, in any one of the first to fourth inventions, the motion sensor is at least one of a thermopile, an infrared pyroelectric sensor, an ultrasonic sensor, and an imaging means. .

  According to the motion detection system of the present invention, the motion sensor for detecting the motion of a person or an object in the passenger compartment, vehicle information acquisition means for acquiring vehicle information including engine operation and door lock of the vehicle, and the motion sensor A security mode for detecting a motion of a person or an object in the passenger compartment and issuing a predetermined alarm when it is determined to be abnormal, and detecting a motion of an occupant in the passenger compartment by the motion sensor, and a predetermined in-vehicle operation corresponding to the motion A control unit that operates in an operation detection mode for controlling the apparatus; and a vehicle state of the vehicle is determined based on vehicle information acquired by the vehicle information acquisition unit, and the operation of the control unit is controlled according to the vehicle state. Switching means for switching to a mode or the operation detection mode, and when the switching means determines that the vehicle is parked, the control means When the stage is shifted to the security mode and the vehicle is determined to be in a non-parking state, the control means is shifted to the operation detection mode. It can be used as a security system that detects intrusions and issues an alarm. In a non-parking state, it can be operated by hand movements on in-vehicle devices such as lighting, air conditioners, car audio, electric windows, and electric seats. It can be used as a motion switch for operation input.

Further, the switching means changes at least one of the number, sensitivity, and detection range of the motion sensors between the security mode and the operation detection mode, so that in the security mode, The movement of an object can be detected, and the movement of an occupant can be detected for each seat in the operation detection mode. In the operation detection mode, the sensitivity of the motion sensor is higher than that in the security mode. It is possible to appropriately switch the detection range and sensitivity of the motion sensor according to the state of the vehicle, and to prevent the detection failure of the abnormal state during parking, the erroneous determination of the occupant's operation, and the like.

The switching means determines the non-parking state when the engine is operated, and reliably determines the non-parking state and the parking state when the engine is stopped and the door is locked when the parking state is determined. Can be judged.
The switching means determines the non-parking state when the engine is operated, and determines the parking state when the engine is stopped, the door is locked, and no movement is detected by the motion sensor for a predetermined time. In this case, it can be more accurately determined that the vehicle is parked.
The control means includes a standby mode in which the detection result of the motion sensor is ignored, and the switching means determines that the door is in a standby state when the door lock is released and the engine is stopped, and the control means is set to the standby mode. When shifting to, it is possible to prevent unnecessary operations from being performed in the standby state.
When the motion sensor is at least one of a thermopile, an infrared pyroelectric sensor, an ultrasonic sensor, and an imaging means, an optimal sensor is used according to the required detection range and detection accuracy. Alternatively, the movement of an object can be detected.

The present invention will be further described in the following detailed description with reference to the drawings referred to, with reference to non-limiting examples of exemplary embodiments according to the present invention. Similar parts are shown throughout the several figures.
It is a block diagram which shows the structure of a motion detection system. It is a schematic diagram showing a detection range in the case where a motion sensor is disposed in front of the passenger compartment and motion detection is performed only on the driver's seat in a non-parking state. It is a schematic diagram showing a detection range when a motion sensor is disposed near the center of the passenger compartment and motion detection of each seat is performed in a non-parking state. It is a schematic diagram showing a detection range when a motion sensor is disposed in front of the passenger compartment and motion detection of the entire passenger compartment is performed in a parking state. It is a schematic diagram showing a detection range when a motion sensor is disposed near the center of the passenger compartment and motion detection of the entire passenger compartment is performed in a parking state. It is a figure which shows the judgment method of the state of a vehicle, and the transition of the operation mode based on it.

  The items shown here are exemplary and illustrative of the embodiments of the present invention, and are the most effective and easy-to-understand explanations of the principles and conceptual features of the present invention. It is stated for the purpose of providing what seems to be. In this respect, it is not intended to illustrate the structural details of the present invention beyond what is necessary for a fundamental understanding of the present invention. It will be clear to those skilled in the art how it is actually implemented.

  The motion detection system (1) according to the present embodiment is disposed and used in an arbitrary vehicle such as a passenger car. The motion detection system (1) includes a motion sensor (2) for detecting the motion of a person or an object in the passenger compartment, vehicle information acquisition means (3) for acquiring vehicle information including vehicle engine operation and door lock, A sensor (2) detects the movement of a person or an object in the passenger compartment, and a security mode that gives a predetermined alarm when it is determined to be abnormal, and a movement sensor (2) detects the movement of a passenger in the passenger compartment, The vehicle state of the vehicle is determined based on the vehicle information acquired by the control means (5) that operates in an operation mode including an operation detection mode that controls a predetermined in-vehicle device corresponding to the vehicle information, and the vehicle information acquisition means (3) And switching means (4) for switching the operation of the control means (5) to the security mode or the operation detection mode according to the vehicle state (see FIG. 1). Necessary electric power is supplied to the sensors and each means constituting the motion detection system (1) by a power supply circuit (not shown) that receives power from the vehicle battery.

  The motion sensor (2) is a sensor for detecting the motion of a person or an object in the vehicle interior without contact, and any type of sensor can be used. Examples of such sensors include a thermopile that can detect the movement of a heat source, an infrared pyroelectric sensor, and a photodiode, such as an ultrasonic sensor that can detect the distance of an object, and an image that can detect the position and movement of a person or object from a captured image. Means can be mentioned. In addition, a photoelectric sensor, a bolometer, a capacitance sensor, or the like in which a light emitting element such as infrared light and a light receiving element are combined may be used. The number of these sensors constituting the motion sensor (2) is not particularly limited, and may be configured using one or more of these sensors.

  The location of the motion sensor (2) is appropriately set according to the sensor to be used. For example, in a passenger car, a motion sensor (2) can be provided on the front side of the ceiling of the passenger compartment. In that case, a sensor can be provided integrally at the base of the rearview mirror (see the motion sensor 2 shown in FIG. 2). In addition, the movement sensor (2) may be disposed near the center of the ceiling of the passenger compartment. In that case, a sensor can be provided integrally with the room light (see the motion sensor 2 shown in FIG. 3).

The motion sensor (2) detects the number of sensors to be used and the detection of the sensor according to the instruction or control of the switching means (4) (may be the control means (5)) according to the state (operation mode) of the vehicle. The range, detection sensitivity, etc. can be changed.
For example, when the vehicle is in a parked state (security mode), it is preferable that the entire vehicle interior is the detection range (see the vehicle interior detection range 86 shown in FIGS. 4 and 5). By setting the entire vehicle interior as a detection range, the movement sensor (2) can detect the movement of an intruder or an object regardless of where the person enters.

  In addition, when the vehicle is in a non-parking state (operation detection mode), the motion sensor (2) is set to a detection range corresponding to the seat to detect only a predetermined motion of the occupant of the specific seat. It is preferable that the detection sensitivity and the resolution necessary for judging the operation are set. For example, the detection range of the motion sensor (2) can be limited for each seat (see the detection ranges 82 to 84 in the passenger compartment shown in FIGS. 2 and 3). In addition, a seat for motion detection can be set according to the in-vehicle device controlled by the motion of the occupant. For example, only the driver's seat may be detected (see the detection range 81 in the passenger compartment shown in FIG. 2), or all seats may be detected for each seat (the detection range 82 in the passenger compartment shown in FIG. 3). 84).

  The method for changing the detection range, detection sensitivity, etc. of the motion sensor (2) can be arbitrarily selected. For example, the detection sensitivity of the motion sensor (2) can be changed to adjust the detectable distance from the motion sensor (2). Further, a plurality of sensors may be provided as the motion sensor (2), arranged so that each sensor can detect a different range, and the motion of the entire vehicle compartment can be detected by combining them. Furthermore, the change in the detection sensitivity of the motion sensor (2) may be combined with the selection of a plurality of arranged sensors and the change in the number of uses.

The vehicle information acquisition means (3) acquires vehicle information for determining whether the vehicle is in a parked state where the vehicle is not used, or in a non-parked state where the occupant can stay and travel. Configured. Moreover, it can comprise so that the vehicle information for determining the state etc. which are not parked but the vehicle is not driving | running | working as a standby state can be acquired.
The type and number of vehicle information to be acquired are not particularly limited. The vehicle information includes at least information on whether or not the door is locked, and information on whether or not the engine (including the electric motor in addition to the internal combustion engine) is operating. The vehicle information includes door opening / closing, vehicle speed, information on presence / absence of seating by a seating sensor, signals generated by other security systems, and the like. By combining such various types of vehicle information, it is possible to appropriately determine the parking state, the non-parking state, and the like. In addition, ambient brightness, temperature, and the like can be acquired as vehicle information.

  The method by which the vehicle information acquisition means (3) acquires various types of vehicle information can be arbitrarily selected. For example, the vehicle information acquisition means (3) can be configured to acquire various types of vehicle information from an ECU (30) or the like that detects or controls each vehicle information. The vehicle information acquisition means (3) may be configured to directly detect a signal corresponding to the vehicle information using a sensor.

The switching means (4) determines the vehicle state based on the vehicle information acquired by the vehicle information acquisition means (3), and switches the operation of the control means (5) to the security mode or the operation detection mode according to the vehicle state. It is configured.
For example, the switching means (4) can be configured to determine that the vehicle is not parked when the engine is operated, and to determine that the vehicle is parked when the engine is stopped and the door is locked. When determining that the vehicle is in the parking state, it is also possible to make it a condition that there are no seated persons in all seats. That is, the parking state can be more reliably determined by determining the parking state when the door is locked, the engine is stopped, and no seated person is present.

The switching means (4) can also use the detection result of the motion sensor (2) for determination of the vehicle state. For example, the switching means (4) judges that the engine is not parked when the engine is operated, parks the door when the engine is stopped and the door is locked, and no movement is detected by the motion sensor (2) for a predetermined time. It can be configured to determine the state. If the detection result by the motion sensor (2) is used, it is possible to more reliably determine that the vehicle is in the parked state by confirming that there is no person if no movement is detected in the vehicle interior after the door is locked.
Further, the switching means (4) can be configured to determine a standby state when the door lock is released and the engine is stopped.

  The switching means (4) is configured to switch the operation of the control means (5) to the operation detection mode or the security mode based on the above determination. That is, when it is determined that the vehicle is parked, the control means (5) is shifted to the security mode, and when it is determined that the vehicle is not parked, the control means (5) is shifted to the operation detection mode. In addition, when the switching means (4) determines that it is in the standby state, the operation of the control means (5) can be shifted to the standby mode.

  The control means (5) has operation detection modes and security mode operation modes, and is configured to perform different controls by using the motion sensor (2) under different conditions (detection range, detection sensitivity, resolution, etc.). can do. Further, the control means (5) can be provided with a standby mode for performing control different from the operation detection mode and the security mode.

[1] Security mode In the security mode, the control means (5) detects the movement of a person or an object in the passenger compartment by the motion sensor (2), and if it is determined to be abnormal, the alarm means (7) It is configured to perform a predetermined alarm. The alarm means (7) is a means for issuing an alarm when the control means (5) detects an intrusion of a person or an object into the passenger compartment and determines that there is an abnormality, and the method for issuing the alarm is not particularly limited. . Examples of the alarm include generation of an alarm sound by a sounding device such as a horn, lighting or blinking of a headlight, a direction indicator, a room light, etc., notification to the outside by wireless communication, and the like.

[2] Operation detection mode In the operation detection mode, the control means (5) detects a predetermined motion of an occupant in the passenger compartment by means of the motion sensor (2), and controls a predetermined vehicle-mounted device corresponding to the motion. Configured as follows. The “predetermined operation of the occupant” intends an operation for the occupant to perform a predetermined operation instruction to a predetermined in-vehicle device. This operation is not particularly limited as long as it can be detected by the motion sensor (2) and can be identified as an operation representing a predetermined operation instruction by the control means (5). For example, an operation of pointing a finger, an operation of shaking or shaking the palm or the finger, an operation of making the palm or the finger into a predetermined shape or drawing a predetermined shape can be exemplified.

Moreover, the kind and number of in-vehicle devices (6) to be controlled by the control means (5) are not particularly limited, and the interior lighting device, air conditioner, heater, blower, audio device, navigation device, electric window, electric seat, etc. Can be illustrated. The control means (5) can be configured to perform control corresponding to the predetermined operation of the identified occupant on the in-vehicle device corresponding to the predetermined operation of the identified occupant. For this purpose, a predetermined operation of the occupant, one or a plurality of on-vehicle devices to be targeted, and one or a plurality of operation instructions (operation / stop, adjustment of volume, brightness, position, etc.) for each on-vehicle device, They can be associated in advance.
By the above, for example, when it is determined that the air conditioner is the target from the identified occupant operation and the temperature is determined to be an instruction to increase the temperature from the identified occupant operation, the control means (5) You can send instructions to increase the

  Moreover, the control means 5 can also perform different control by one operation | movement of a passenger | crew according to the vehicle speed etc. of a vehicle. For example, for the map light in the driver's seat, turn it on only when the vehicle is stopped, turn it off only when the vehicle speed is above a certain level, and do not accidentally turn on the map light while driving Can be.

In the operation detection mode, in order to detect a specific occupant (for example, a driver) or a predetermined movement of the occupant for each seat, the detection range, sensitivity, resolution, and the like of the motion sensor (2) It is preferable to change the security mode for detecting the movement of the camera. Normally, the operation detection mode is changed so that the detection range of one motion sensor is narrower and the detection sensitivity is higher than in the security mode. The switching can be performed by the switching means (4) or the control means (5).
As a more specific example, a motion sensor (2) including a sensor element having a detection range corresponding to one seat in the vehicle interior is provided for each seat, and the sensor element corresponding to the seat in the operation detection mode. Thus, motion detection limited to the range of the seat can be performed, and in the security mode, it is possible to detect movement of a person or an object in the entire vehicle interior by all sensor elements.
The control means (5) can change the control of the target device and prohibit the instruction for each seat by detecting the movement of the occupant for each seat. For example, in the case of the control of the map light, the map light of the corresponding seat can be turned on / off by detecting the movement of the occupant of each seat. Further, it is possible to prevent the driver from giving a predetermined instruction to the navigation device while traveling.

[3] Standby mode In the standby mode, the control means (5) ignores the detection result of the motion sensor (2) and does not perform an alarm or control of a predetermined in-vehicle device or only limited control. Can be configured.

  The vehicle information acquisition means (3), switching means (4), control means (5), etc. may be realized by either hardware or software, for example, a CPU, memory (ROM, RAM, etc.), It can be configured by including peripheral circuits such as an input / output interface around a microcontroller (microcomputer) including an output circuit. Alternatively, a programmable logic circuit, a gate array, or other logic circuit may be used.

(Specific configuration and operation of motion detection system)
A specific configuration and operation of the motion detection system 1 shown in FIG. 1 will be described. The motion detection system 1 is provided in a passenger car in which two seats are arranged at the front and rear, and includes a motion sensor 2, vehicle information acquisition means 3, switching means 4, and control means 5. The vehicle information acquisition means 3, the switching means 4, and the control means 5 are implemented as software executed on an electronic control unit (ECU).

As shown in FIG. 3, the motion sensor 2 is disposed integrally with the interior lamp 93 at the center of the ceiling of the passenger compartment, and is connected to the switching means 4 and the control means 5. The motion sensor 2 is provided so that the motion around the seats 95 to 98 can be detected by four infrared pyroelectric sensors.
The vehicle information acquisition means 3 includes door lock information 31 indicating whether the door is locked, engine operation information 32 indicating whether the engine is operating, and whether a passenger is seated in each of the seats 95 to 98. The presence / absence information 33 indicating whether or not is acquired from the ECU 30, and the vehicle information is output to the switching unit 4.

The switching unit 4 determines whether the vehicle is in a parking state or a non-parking state based on the information 31 to 33, and switches the operation mode of the control unit 5 based on the determination result. The switching means 4 can monitor whether or not a motion of a person is detected by the motion sensor 2 in order to determine whether or not the vehicle is in a parked state.
The switching means 4 shifts the operation mode of the control means 5 to the security mode when it is determined that the vehicle is parked as described above, and changes the operation mode of the control means 5 when it is determined that the vehicle is not parked. When the mode is shifted to the operation detection mode and it is determined that the vehicle is in the standby state, the operation mode of the control means 5 is shifted to the standby mode.

  Further, the switching unit 4 can change the operating condition (at least one of the number of sensors used, sensitivity, and detection range) of the motion sensor 2 based on the above determination. Thereby, in the security mode, it is possible to detect the movement of a person or an object in the entire vehicle interior, and it is possible to detect the movement of an occupant seated in a predetermined seat in the operation detection mode.

The control unit 5 includes a control program corresponding to each operation mode of the security mode, the operation detection mode, and the standby mode, and changes the operation mode to be executed according to the determination by the switching unit 4.
In this example, the target in-vehicle device 6 is a map lamp provided above each seat. The in-vehicle device 6 is connected to the control means 5 and can be turned on / off by an instruction signal from the control means 5. The alarm means 7 connected to the control means 5 is a means for sounding a horn provided on the vehicle as an alarm, or lighting / flashing a lamp, and issues an alarm according to an instruction signal from the control means 5. . As the alarm means 7, a communication means for sending an alarm to the outside by wireless communication may be provided.

  In the security mode, the control means 5 detects the motion in the entire range 86 of the vehicle interior by the motion sensor 2 as shown in FIG. When motion is detected, it is determined that an intrusion has occurred and an alarm operation is performed.

  In the operation detection mode, the control means 5 detects the movement of the occupant in the detection ranges 81 to 84 corresponding to the seats 95 to 98 by the motion sensor 2, as shown in FIG. Then, the control means 5 calculates the position of the movement, the duration, the movement amount, etc., and determines whether or not it is a predetermined operation. When it is determined that the detected movement of the occupant is a predetermined movement, predetermined control (operation instruction) is performed on the in-vehicle device 6 corresponding to the seat. For example, if it is determined in the detection range 81 that a predetermined operation has been performed, the map lamp corresponding to the seat 95 is turned on or off. Similarly, when it is determined that a predetermined operation is performed in the detection ranges 82 to 84, the map lights of the corresponding seats 96 to 98 are turned on or off.

  In the standby mode, the control unit 5 ignores the motion of the person or the object detected by the motion sensor 2 or responds to the motion only when a predetermined motion of a limited passenger is detected. Control of the in-vehicle device (such as turning on / off the map lamp) can be performed.

FIG. 6 shows a method for determining the state of the vehicle by the switching unit 4 and the transition of the operation mode by the control unit 5 according to the method.
The switching unit 4 acquires information on the operating state of the engine and the operating state of the door lock from the vehicle information acquiring unit 3 as vehicle information. Similarly, information on the presence / absence of a seated person for each seat can be acquired. Furthermore, the switching means 4 can detect whether there is a person's movement using the motion sensor 2.

  First, when the door lock of the vehicle is released and the engine is not operated (on), the switching unit 4 determines that the vehicle is in a standby state. In this case, the switching unit 4 instructs the control unit 5 to operate in the standby mode.

  When the engine is operated (on) in the standby state, the switching unit 4 determines that the vehicle is not parked. At this time, the switching unit 4 shifts the operation mode of the control unit 5 to the operation detection mode. In the operation detection mode, the control means 5 uses the motion sensor 2 as shown in FIG. 2 or 3 to detect the movement of the occupant within a range corresponding to one seat or a plurality of seats, and performs a predetermined operation. When it is identified as being, control of the in-vehicle device corresponding to the operation (for example, turning off the map lamp) is performed.

  Next, in the non-parking state, when the engine is stopped (off), the switching means 4 determines that it is in a standby state. Then, the switching unit 4 shifts the operation mode of the control unit 5 to the standby mode.

When the door is locked in the standby state, the switching unit 4 determines that the vehicle is in the parking state. Further, when the door is locked and there is no seated person in any seat, the parking state may be determined. Further, when the door is locked, there is no seated person in any seat, and the movement sensor 2 as shown in FIG. It may be.
When the parking state is determined, the switching unit 4 shifts the operation mode of the control unit 5 to the security mode. In the security mode, the control means 5 uses the motion sensor 2 as shown in FIG. 4 or 5 to determine that an abnormality is detected when the movement of a person or an object is detected in the passenger compartment. A warning is issued by.

When the door lock is released in the parking state, the switching unit 4 determines that the vehicle is in a standby state. Further, when the door lock is released or the engine is started, the standby state may be determined.
When determining the standby state, the switching unit 4 shifts the operation mode of the control unit 5 to the standby mode. When the engine is started, it may be determined that the vehicle is not parked, and the operation mode of the control unit 5 may be directly shifted to the operation detection mode.

(Effect of motion detection system)
The motion detection system 1 can be used as an intrusion detection sensor that detects an intrusion into the passenger compartment by the motion sensor 2 and issues an alarm when the vehicle is parked (security mode). Further, in a non-parking state (operation detection mode) of the vehicle, the motion sensor 2 can detect an occupant's motion and can be used as a motion sensor (motion switch) that controls the in-vehicle device 6. That is, one motion sensor 2 can always be used as an intrusion detection sensor and a motion sensor.
In the security mode and the operation detection mode, the detection range of the motion sensor 2 is switched as shown in FIGS. At this time, the sensitivity of the motion sensor 2 can also be changed. Thereby, intrusion detection omission can be prevented in the security mode, and erroneous detection of operation can be prevented in the operation detection mode.

  The present invention is not limited to the embodiments described in detail above, and various modifications or changes can be made within the scope of the claims of the present invention. In this example, a passenger car has been described. However, the present invention is not limited to a passenger car and can be applied not only to a vehicle space. Moreover, although the map lamp is taken up as an in-vehicle device, the present invention is not limited to this, and air conditioner on / off / temperature control, window opening / closing control, volume adjustment / music selection control of car audio equipment, and the like can be performed. In the operation detection mode, an example in which one operation is mainly identified has been described. However, a predetermined control may be performed on the in-vehicle device corresponding to the operation by detecting a series of operations.

DESCRIPTION OF SYMBOLS 1; Motion detection system, 2; Motion sensor, 3; Vehicle information acquisition means, 31; Door lock (information), 32; Engine operation (information), 33; Seating presence / absence (information), 4; Means 6: On-vehicle device 7: Alarm means
81-86; detection range, 95-98; seat.

Claims (5)

A motion sensor for detecting movement of a person or an object in the passenger compartment;
Vehicle information acquisition means for acquiring vehicle information including engine operation and door lock of the vehicle;
The motion sensor detects the movement of a person or an object in the vehicle interior, and when it is determined to be abnormal, the security mode performs a predetermined alarm, and the motion sensor detects the operation of the passenger in the vehicle interior and responds to the operation. Control means that operates in an operation detection mode for controlling a predetermined in-vehicle device,
Switching means for determining the vehicle state of the vehicle based on the vehicle information acquired by the vehicle information acquisition means, and switching the operation of the control means to the security mode or the operation detection mode according to the vehicle state;
With
The switching means shifts the control means to the security mode when it is determined that the vehicle is parked, and enters the operation detection mode when the vehicle is determined not to be parked. By shifting and changing at least one of the number, sensitivity, and detection range of the motion sensors between the security mode and the operation detection mode, in the security mode, movement of a person or an object in the entire vehicle interior is detected. In the operation detection mode, it is possible to detect the occupant's movement for each seat,
In the operation detection mode, the sensitivity of the motion sensor is higher than that in the security mode .   2. The motion detection system according to claim 1, wherein the switching unit determines that the vehicle is not parked when the engine is operated, and determines the parking state when the engine is stopped and the door is locked.   The switching means determines the non-parking state when the engine is operated, and determines the parking state when the engine is stopped, the door is locked, and no movement is detected by the motion sensor for a predetermined time. The motion detection system according to claim 1. The control means includes a standby mode for ignoring the detection result of the motion sensor,
Said switching means, the motion detection system according to any one of claims 1 to 3 determines that the standby state shifts the control means to the standby mode when the door lock and engine is released is stopped. The motion sensor is a thermopile infrared pyroelectric sensor, an ultrasonic sensor, and a motion detection system according to any one of claims 1 to 4 at least is one of the imaging means.

Images