JP2012233328A - Portable machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable machine capable of reducing power consumption while being able to detect a fall of a portable machine body.SOLUTION: A portable machine 1 detects a fall of a portable machine body on a basis of detected acceleration through an acceleration sensor 16. Also, when a locking switch 11 or an unlocking switch 12 is operated, the portable machine 1 transmits, by radio, a locking request signal or an unlocking request signal to an on-vehicle machine 2 installed inside a vehicle. The portable machine 1 has a transistor 19 which intermittently supplies the accelerator 16 with power. When detecting that the switches 11 and 12 are operated or receiving a request signal transmitted by the radio from the on-vehicle machine 2 to a vehicle exterior communication area A, the portable machine 1 supplies the accelerator 16 with power for a predetermined period of time through the transistor 19.

Description

  The present invention relates to a portable device, and more particularly to a portable device that is useful when employed in a vehicle wireless communication system or the like.

  2. Description of the Related Art Conventionally, a wireless communication system for a vehicle that can remotely control locking and unlocking of a vehicle door by operating a switch provided in a portable device is well known. In this wireless communication system, when a user operates a lock switch or an unlock switch of a portable device, a lock request signal or an unlock request signal is wirelessly transmitted from the portable device. And when these request signals are received by the vehicle-mounted device provided in the vehicle, the vehicle-mounted device locks or unlocks the vehicle door based on the content of the request signal.

  On the other hand, a portable device used in such a wireless communication system for a vehicle is provided with the portable device as detected by a sensor when a predetermined impact is applied, as seen in Patent Document 1, for example. Some light emitting diodes (LEDs) emit light. As a result, when a predetermined impact is applied to the portable device when the user drops the portable device in a dark place or the like, the LED of the portable device emits light. Therefore, the user relies on the light of the LED to position the portable device. I can know. For this reason, the loss of the portable device can be avoided.

JP 2006-226025 A

  By the way, in such a portable device, the power consumption is increased by driving the sensor that detects the impact. Therefore, in a portable device using a battery as a power source, the battery is likely to run out, and convenience may be impaired.

  Such a problem is not limited to a portable device that detects an impact by a sensor and emits an LED, but is common to portable devices that detect a fall of the portable device by a sensor and execute a predetermined process.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a portable device that can reduce power consumption while allowing a drop of the portable device body to be detected.

  In order to solve the above-described problem, the invention described in claim 1 includes an operation unit that can be manually operated and a fall detection sensor that detects a fall of the portable device body, and the portable device is detected by the fall detection sensor. In a portable device that executes a predetermined process when a fall of the main body is detected, a power supply intermittent means for intermittently supplying power to the drop detection sensor, and the power supply intermittent means based on detecting an operation on the operation unit And a control means for supplying power to the fall detection sensor for a predetermined time.

  One situation in which the portable device body can be easily dropped is considered immediately after the user operates the operation unit of the portable device. In this regard, according to the above configuration, when the user operates the operation unit, power is supplied to the drop detection sensor for a certain period of time, so that the portable device body has been dropped immediately after the operation of the operation unit. The fall can be detected by a fall detection sensor. In addition, since power is supplied to the fall detection sensor only for a certain period of time, power consumption of the portable device can be reduced. Therefore, it becomes possible to reduce power consumption while making it possible to detect the fall of the portable device body.

  According to a second aspect of the present invention, there is provided an in-vehicle device provided in a vehicle having an operation unit that can be manually operated and a drop detection sensor that detects a fall of the portable device body, based on an operation on the operation unit. In a portable device that wirelessly transmits a lock request signal for requesting locking of a vehicle door and that performs a predetermined process when the drop detection sensor detects a fall of the portable device body, power supply to the drop detection sensor When the operation on the operation unit is detected or when a radio signal transmitted from the in-vehicle device to the communication area outside the vehicle compartment is received, the drop detection sensor is operated by the power supply interrupting unit. And a control means for supplying power to the power source for a predetermined time.

  As described above, as one of the wireless communication systems for vehicles, there is one that can remotely control locking of a vehicle door by operating an operation unit provided in a portable device. By the way, in a portable device used in such a vehicle wireless communication system, for example, when the user is concerned about forgetting to lock the vehicle door when leaving the vehicle, the vehicle door is opened by operating the operation unit of the portable device. Even when trying to take out the portable device main body from a bag or the like to lock it, it is easy to drop it. In this respect, according to the above configuration, when the wireless signal transmitted from the in-vehicle device to the communication area outside the vehicle compartment is received by the portable device, the power supply to the fall detection sensor is performed for a certain period of time. It is possible to detect the fall of the portable device body during a period from when the machine is located in the communication area outside the passenger compartment until a predetermined time has elapsed. Accordingly, even if the user drops the portable device body from the bag when the user leaves the vehicle, the fall detection sensor can detect the fall. Moreover, according to the said structure, even if the portable device main body is dropped immediately after the user operates the operation unit, similarly to the invention described in claim 1, the fall can be detected. . Furthermore, since the power supply to the fall detection sensor is performed only for a certain time, the power consumption of the portable device can be reduced. Therefore, it is possible to reduce power consumption while making it possible to detect the fall of the portable device body.

  In this case, as in the third aspect of the invention, there is further provided a notification means for notifying that the portable device main body is dropped, and performing the notification by the notification means for a predetermined time as the predetermined processing. It is effective to adopt this, so that even if the user drops the portable device main body in a dark place, for example, the user can easily find the portable device main body by notification of the notification means. It becomes possible to suppress loss.

  According to a fourth aspect of the present invention, in the portable device according to the third aspect, the fall detection sensor is an acceleration sensor that detects an acceleration of the portable device main body, and the detection of the falling of the portable device main body is performed. This is performed based on the acceleration of the portable device main body detected through the acceleration sensor, and the control means continues to supply power to the acceleration sensor by the power supply interrupting means during a period of notification by the notification means. , When the motion estimated to be held by the person is detected based on the acceleration of the portable device main body detected by the acceleration sensor during the period, the notification by the notification means is stopped. In addition, the gist is to cut off the power supply to the acceleration sensor.

  According to this configuration, since the power supply to the acceleration sensor is continued during the period when the notification is performed by the notification means, when the user holds the dropped portable device body, the acceleration of the portable device body at that time is determined. It can be detected by an acceleration sensor. And if the operation | movement estimated that the user is carrying the portable device main body based on the acceleration detected by the acceleration sensor is detected, the notification by the notification means is stopped and the power supply to the acceleration sensor is cut off. Is done. This makes it possible to reduce power consumption while obtaining a necessary and sufficient notification effect.

  In this case, according to the invention described in claim 5, as the operation that is estimated to be carried by the person holding the portable device body, the portable device body is lifted or the portable device body is held. It is effective to employ human walking movements, which makes it possible to easily detect these movements based on the acceleration of the portable device body detected through the acceleration sensor.

  According to the portable device according to the present invention, it is possible to reduce power consumption while making it possible to detect the fall of the portable device body.

The figure which shows typically the outline | summary of the radio | wireless communications system of the vehicle using the portable device about one Embodiment of the portable device concerning this invention. The block diagram which shows the system configuration | structure of the radio | wireless communications system of the vehicle. The flowchart which shows the procedure about the fall alerting | reporting process by the portable device of the embodiment. The flowchart which shows the procedure about the process which interrupts the electric power feeding to the acceleration sensor by the portable device of the embodiment. (A), (b) is a timing chart which shows the operation example of the embodiment. (A), (b) is a timing chart which shows the operation example of the embodiment.

  Hereinafter, an embodiment in which a portable device according to the present invention is applied to a portable device used in a wireless communication system for a vehicle will be described with reference to FIGS. First, with reference to FIG. 1, the outline | summary of the radio | wireless communications system of the vehicle concerning this embodiment is demonstrated.

  The vehicle wireless communication system of this embodiment operates as a so-called remote keyless entry system and smart entry system. That is, as shown in FIG. 1, in this wireless communication system, when the lock switch 11 or the unlock switch 12 provided in the portable device body 10 is operated by the user, a unique identification code (key ID) is received from the portable device 1. A lock request signal or an unlock request signal including a code) is wirelessly transmitted. When these request signals are received by the vehicle-mounted device 2 provided in the vehicle, the door of the vehicle C is locked or unlocked. Further, in this wireless communication system, for example, a request signal is wirelessly transmitted from the transmission unit 20 provided in the door knob of the vehicle C to the outside communication area A set around the vehicle door. Then, when the user who possesses the portable device 1 enters the vehicle exterior communication area A, the request signal wirelessly transmitted from the transmission unit 20 is received by the portable device 1, and a response signal including the key ID code is received from the portable device 1. Wirelessly transmitted. When this response signal is received by the vehicle-mounted device 2, the vehicle door is unlocked. In the present embodiment, the lock switch 11 and the unlock switch 12 are the operation unit of the portable device 1.

Next, the configuration and operation of the wireless communication system according to the present embodiment will be described in detail with reference to FIG.
As shown in FIG. 2, the in-vehicle device 2 includes a receiving unit 21 that receives a response signal, a lock request signal, and an unlock request signal that are wirelessly transmitted from the portable device 1 in addition to the transmission unit 20. Yes. The transmission control of the request signal by the transmission unit 20 and the processing of various radio signals received via the reception unit 21 are performed in an integrated manner by the in-vehicle control unit 22 provided in the in-vehicle device 2. The in-vehicle controller 22 has a nonvolatile memory 22a, and an identification code (vehicle ID code) unique to the vehicle C and the key ID code of the portable device 1 are stored in the memory 22a. When detecting that the vehicle engine is stopped and the vehicle door is locked, for example, the in-vehicle control unit 22 generates a request signal including a vehicle ID code, and transmits the request signal from the transmission unit 20 to a predetermined value. It transmits by radio to the communication area A outside the vehicle in a cycle. Moreover, if the vehicle-mounted control part 22 receives the response signal wirelessly transmitted from the portable device 1 via the receiving part 21, the key ID code contained in the response signal and the key ID code stored in the memory 22a When the collation is performed and the collation is established, the door lock mechanism 23 unlocks the vehicle door. Further, when the in-vehicle control unit 22 receives the lock request signal and the unlock request signal wirelessly transmitted from the portable device 1 via the receiving unit 21, the in-vehicle control unit 22 stores the key ID code included in each request signal and the memory 22a. The vehicle door is locked or unlocked by the door lock mechanism 23 based on the request contents of each signal.

  In addition, the portable device 1 is provided with a receiving unit 13 that receives a request signal wirelessly transmitted from the in-vehicle device 2 and a transmitting unit 14 that wirelessly transmits the response signal, the lock request signal, and the unlock request signal described above. ing. Further, the portable device 1 is provided with a light emitting diode (LED) 15 provided so as to be visible from the outside, and an acceleration sensor 16 that detects acceleration of the portable device body 10 in three axial directions orthogonal to each other. The acceleration sensor 16 is configured to receive power from the battery 18 serving as an operation power source for the portable device 1 via the transistor 19. That is, the power supply to the acceleration sensor 16 is interrupted according to the on / off state of the transistor 19. The portable device control unit provided in the portable device 1 performs on / off switching of the transistor 19, processing of a request signal received via the reception unit 13, and transmission control of various wireless signals by the transmission unit 14. (Control means) It is performed collectively through 17. The portable device control unit 17 has a non-volatile memory 17a, and the vehicle ID code of the vehicle C and the key ID code of the portable device 1 are stored in the memory 17a. When the portable device control unit 17 receives the request signal via the receiving unit 13, the portable device control unit 17 compares the vehicle ID code included in the request signal with the vehicle ID code stored in the memory 17a, and the verification is established. If so, a response signal including the key ID code stored in the memory 17a is generated and wirelessly transmitted from the transmission unit 14. When the portable device control unit 17 detects that the lock switch 11 or the unlock switch 12 is operated based on the output signals of the lock switch 11 and the unlock switch 12, the key stored in the memory 17a is detected. A lock request signal or an unlock request signal including an ID code is generated and transmitted wirelessly from the transmitter 14.

  On the other hand, when the portable device control unit 17 monitors the acceleration detected through the acceleration sensor 16 and detects the fall of the portable device body 10 based on the acceleration, the drop notification process notifies the fact by turning on the LED 15. Execute.

Next, with reference to FIG. 3, the procedure of the drop notification process executed by the portable device control unit 17 will be described. The process shown in FIG. 3 is repeatedly executed with a predetermined calculation cycle.
As shown in FIG. 3, in this process, first, it is monitored whether or not the portable device body 10 has been dropped (step S1). In step S1, when the acceleration detected through the acceleration sensor 16 becomes “0 [G]”, that is, when free fall of the portable device body 10 is detected, it is determined that the portable device body 10 has dropped. The Here, when it is determined that the portable device body 10 has fallen (step S1: YES), the LED 15 is turned on (step S2), and it is monitored whether a certain time Ta has elapsed since the start of lighting. (Step S3). At this time, in step S4, it is also monitored whether or not an operation presumed that a person is carrying the portable device body 10 is detected. In the present embodiment, as an operation that is estimated that a person is carrying the portable device body 10, a lifting operation of the portable device body 10 and a walking operation of a person who carries the portable device body 10 are adopted. Then, in the process of step S4, when the acceleration of the portable device body 10 detected through the acceleration sensor 16 changes in a certain direction for a predetermined time or more, it is determined that the dropped portable device body 10 is lifted by a person. Further, when the acceleration of the portable device main body 10 detected through the acceleration sensor 16 changes at a constant cycle for a predetermined time or more, it is determined that the person holding the portable device main body 10 is walking. Then, when a lifting operation of the portable device body 10 or a walking operation of a person carrying the portable device body 10 is detected, an operation presumed that the person is holding the portable device body 10 is detected. To be judged. Here, when an operation presumed that a person is carrying the portable device body 10 is detected (step S4: YES), the LED 15 is turned off (step S5).

  On the other hand, when a predetermined time has elapsed since the start of lighting of the LED 15 (step S3: YES) without detecting an operation that is presumed that the person is carrying the portable device body 10 (step S4: NO), the same applies. The LED 15 is turned off (step S5).

  In the process shown in FIG. 3, if the acceleration sensor 16 is always driven to monitor the drop of the portable device body 10, the power consumption of the portable device 1 increases accordingly. Cut easily occurs.

  Therefore, in the present embodiment, power supply to the acceleration sensor 16 is normally cut off, and power supply to the acceleration sensor 16 is performed only for a certain time only in a situation where the user can easily drop the portable device 1. Here, for example, the following two situations are conceivable as situations where the user can easily drop the portable device body 10.

A first situation in which the user operates the lock switch 11 or the unlock switch 12 of the portable device 1.
-In a situation where there is a passenger or a situation where the user is concerned about forgetting to lock the vehicle door when leaving the vehicle, the lock switch 11 of the portable device 1 is operated to make sure that the vehicle door is locked. A second situation in which the portable device body 10 is taken out from a bag or the like.

  Specifically, the portable device control unit 17 normally cuts off the power supply to the acceleration sensor 16 by turning off the transistor 19. When an operation on the lock switch 11 or the unlock switch 12 is detected, it is determined that the first situation has occurred, and the transistor 19 is turned on for a predetermined time. On the other hand, the second situation is likely to occur when the user who gets off leaves the vehicle. Therefore, when the portable device control unit 17 receives a request signal wirelessly transmitted from the in-vehicle device 2 to the communication area A outside the vehicle, the user who has the portable device 1 is located in the communication area A outside the vehicle. It is determined that there is a possibility, and it is determined that there is a possibility that the second situation will occur in this situation. Also at this time, the transistor 19 is turned on for a predetermined time.

  Next, with reference to FIG. 4, a procedure of processing for intermittently supplying power to the acceleration sensor 16 executed by the portable device control unit 17 will be described. The process shown in FIG. 4 is repeatedly executed with a predetermined calculation cycle.

  As shown in FIG. 4, in this process, it is first determined whether or not the lock switch 11 or the unlock switch 12 has been operated (step S10). If the lock switch 11 or the unlock switch 12 is not operated (step S10: NO), it is determined whether a request signal wirelessly transmitted from the in-vehicle device 2 to the in-vehicle communication area A is received. (Step S11). In this step S11, when the request signal is received, the vehicle ID code included in the signal is collated with the vehicle ID code stored in the memory 17a. It is determined that the request signal wirelessly transmitted to the communication area A outside the vehicle is received. And when the request signal is not received (step S11: NO), the portable device control part 17 complete | finishes this series of processes.

  On the other hand, when the lock switch 11 or the unlock switch 12 is operated (step S10: YES), that is, when the first situation occurs, the transistor 19 is turned on by a command (current supply) to the transistor 19. Then, power is supplied to the acceleration sensor 16 (step S12). Also, when the request signal wirelessly transmitted from the in-vehicle device 2 to the in-vehicle communication area A is received (step S11: YES), that is, when the second situation may occur, the transistor 19 is When turned on (step S12), power is supplied to the acceleration sensor 16. Then, in the subsequent step S13, it is monitored whether or not a fixed time Tb has elapsed since the transistor 19 was turned on by an internal timer. At this time, in step S14, it is also monitored whether or not the LED 15 is turned on. When the LED 15 is turned on (step S14: YES), it is monitored whether the LED 15 is turned off (step S15). When the LED 15 is turned off (step S15). : YES), the transistor 19 is turned off (step S16). That is, power supply to the acceleration sensor 16 is cut off.

  On the other hand, even when the LED 15 is not lit (step S14: NO) and the predetermined time Tb has elapsed (step S13: YES), the transistor 19 is turned off (step S16), and the power supply to the acceleration sensor 16 is cut off. The

  Hereinafter, an operation example (action) of the vehicle wireless communication system according to the present embodiment will be described with reference to FIGS. 5 and 6. First, the case of the first situation will be described.

  For example, if the user operates the lock switch 11 or the unlock switch 12 of the portable device 1 at time t1, in the portable device 1, the transistor 19 is turned on at this point in time as shown in FIG. Power supply to the sensor 16 is started. Thereby, the acceleration of the portable device body 10 can be detected by the acceleration sensor 16. For this reason, even if the user drops the portable device main body 10 at a subsequent time t2, the acceleration sensor 16 can detect the acceleration of the portable device main body 10 at that time. At this time, if the acceleration sensor 16 detects “0 [G]” as the acceleration when the portable device body 10 is freely falling, the LED 15 is turned on at time t2, as shown in FIG. 5B. To do. During the period when the LED 15 is lit, as shown in FIG. 5A, the transistor 19 is kept on and power supply to the acceleration sensor 16 is continued. For this reason, if the user lifts the portable device main body 10 at time t3, for example, the acceleration sensor 16 can detect the acceleration of the portable device main body 10 at that time. When the lifting operation of the portable device body 10 is detected based on the acceleration detected by the acceleration sensor 16 at time t3, as shown in FIG. 5B, the LED 15 is turned off at that time, and FIG. As shown in (a), the transistor 19 is turned off and the power supply to the acceleration sensor 16 is cut off. Thereby, the power consumption of the portable device 1 can be reduced while obtaining a necessary and sufficient notification effect.

  On the other hand, as shown in FIGS. 5 (a) and 5 (b), for example, during the period from the time t2 until the fixed time Tb elapses, that is, the period from the time t2 to the time t4, It is assumed that the walking motion of the user who has the machine body 10 is not detected. In this case, as indicated by a one-dot chain line in FIG. 5B, the LED 15 is turned off at the time t4, and at the same time at the time t4, as shown by a one-dot chain line in FIG. Is turned off and power supply to the acceleration sensor 16 is stopped, so that the power consumption of the portable device 1 can be reduced.

  On the other hand, as shown in FIG. 6B, when the LED 15 is not lit during the period from the time t1 until the fixed time Ta passes, that is, from the time t1 to the time t5, As shown in a), at time t5, the transistor 19 is turned off and the power supply to the acceleration sensor 16 is cut off. For this reason, the power consumption of the portable device 1 can be reduced.

Next, the case of the second situation will be described with reference to FIG.
For example, when a request signal that is wirelessly transmitted from the in-vehicle device 2 to the in-vehicle communication area A is received by the portable device 1 when the user gets off at time t1, as shown in FIG. 1, the transistor 19 is turned on at this time, and power supply to the acceleration sensor 16 is started. Thereby, the acceleration of the portable device body 10 can be detected by the acceleration sensor 16. Therefore, even if the user is concerned about forgetting to lock the vehicle door when the user leaves the vehicle afterwards, even when the user tries to remove the portable device body 10 from the bag at time t2, The acceleration of the portable device body 10 at that time can be detected by the acceleration sensor 16. Then, the LED 15 is turned on and off, and the power supply to the acceleration sensor 16 is interrupted in the same manner as in the first situation. For this reason, similarly to the first situation, the power consumption of the portable device 1 can be reduced while obtaining a necessary and sufficient notification effect.

As described above, according to the portable device according to the present embodiment, the following effects can be obtained.
(1) The transistor 19 for intermittently supplying power to the acceleration sensor 16 is provided. When the lock switch 11 or the unlock switch 12 is operated, or when a request signal wirelessly transmitted from the in-vehicle device 2 to the in-vehicle communication area A is received, power is supplied to the acceleration sensor 16 through the transistor 19. It was decided to perform only Ta for a certain time. As a result, it is possible to reduce power consumption while making it possible to detect the fall of the portable device body 10.

  (2) When the fall of the portable device body 10 is detected, the LED 15 is lit for a predetermined time. Thereby, since it becomes easy to find the portable device body 10 by turning on the LED 15, the loss of the portable device 1 can be suppressed.

  (3) The power supply to the acceleration sensor 16 is continued while the LED 15 is lit. Then, when an operation that is estimated to be carried by the person holding the portable device body 10 is detected based on the acceleration of the portable device body 10 detected by the acceleration sensor 16 during that period, the LED 15 is turned off, and the acceleration sensor The power supply to 16 was cut off. This makes it possible to reduce power consumption while obtaining a necessary and sufficient notification effect.

  (4) As an operation that is estimated that a person is carrying the portable device body 10, a lifting operation of the portable device body 10 and a walking operation of a person who has the portable device body 10 are adopted. Accordingly, these operations can be easily detected based on the acceleration of the portable device body 10 detected through the acceleration sensor 16.

(5) The fall of the portable device body 10 is notified by turning on the LED 15. Thereby, it becomes possible to accurately notify the user of the fall of the portable device body 10.
In addition, the said embodiment can also be implemented with the following forms which changed this suitably.

In the above embodiment, the transistor 19 is used as the power supply interrupting means for interrupting the power supply to the acceleration sensor 16, but a relay or the like may be used instead.
-In the said embodiment, it decided to employ | adopt the raising operation | movement of the portable device main body 10, and the walking operation of the user who possessed the portable device main body 10 as an operation | movement estimated that the person has the portable device main body 10. FIG. However, only one of the operations may be employed. In short, what is necessary is that the LED 15 is turned off and the power supply to the acceleration sensor 16 is cut off when an operation that is estimated to be carried by the person 10 is detected.

In the process shown in FIG. 3, the process of step S4 may be omitted. That is, when the LED 15 is turned on, the state may always be continued for a certain time Ta.
In the above embodiment, when the fall of the mobile device body 10 is detected, the process of turning on the LED 15 is executed. Instead of this, for example, a process of backing up data to protect various data May be executed. Further, the security function may be automatically activated to prevent unauthorized use of the portable device 1 by a third party.

  In the above embodiment, the LED (lighting means) 15 is used as the notification means for notifying that the portable device body 10 is dropped, but instead of this, for example, a buzzer (sounding means) for notifying by sound is used. It may be used. Even with such a configuration, it is possible to accurately notify the user of the fall of the portable device body 10.

  In the above embodiment, it is determined that the mobile device body 10 has dropped when the acceleration of the mobile device body 10 detected through the acceleration sensor 16 becomes “0 [G]”. Instead of this, for example, it may be determined that the mobile device body 10 has dropped when the acceleration of the mobile device body 10 is equal to or greater than a predetermined impact determination value. As a result, when the mobile device body 10 that has fallen collides with the ground and the acceleration of the mobile device body 10 exceeds the impact determination value, the mobile device body 10 is detected to fall.

  In the above embodiment, when the switches 11 and 12 are operated, or when a request signal wirelessly transmitted from the in-vehicle device 2 to the in-vehicle communication area A is received, power is supplied to the acceleration sensor 16. It was. Alternatively, power supply to the acceleration sensor 16 may be performed only when the switches 11 and 12 are operated. With such a configuration, the present invention is applied to a portable device dedicated to a remote keyless entry system, that is, a portable device having only a function of transmitting a lock request signal or an unlock request signal based on an operation on each of the switches 11 and 12. It becomes possible to apply the portable device concerning. Moreover, even if it is a portable machine other than the portable machine used for the radio | wireless communications system of a vehicle, if it is a portable machine which has an operation part which can be operated manually, it becomes possible to apply the portable machine concerning this invention.

  In the above embodiment, the triaxial acceleration sensor 16 is used as the fall detection sensor for detecting the fall of the mobile device body 10, but instead of this, for example, a uniaxial acceleration sensor or a biaxial acceleration sensor is used. It is also possible to use it. Moreover, you may detect the fall of the portable apparatus main body 10 using the shock sensor etc. which detect the impact force which arises in the portable apparatus main body 10. FIG.

<Appendix>
Next, a technical idea that can be grasped from the above embodiment and its modifications will be additionally described.
(A) In the portable device according to any one of claims 1 to 3, the fall detection sensor is an acceleration sensor that detects an acceleration of the portable device body, and detects the fall of the portable device body. The portable device is performed based on acceleration of the portable device main body detected through the acceleration sensor. If the fall of the portable device body is detected based on the acceleration of the portable device body as in the same configuration, the falling of the portable device body can be easily detected.

  (B) The portable device according to claim 3, wherein the notification unit includes a lighting unit that notifies the fall of the portable device body by lighting. According to this configuration, since the lighting unit is turned on when the portable device main body is dropped, it is possible to accurately notify the user of the dropping of the portable device main body.

  (C) The portable device according to claim 3, wherein the notification means includes a sounding means for notifying the fall of the portable device body by sound. According to this configuration, since the sound is emitted from the sounding means when the portable device falls, it is possible to accurately notify the user of the fall of the portable device body.

  A: Communication area outside vehicle compartment, C: Vehicle, 1 ... Portable device, 2 ... In-vehicle device, 10 ... Mobile device body, 11 ... Lock switch, 12 ... Unlock switch, 13, 21 ... Receiver, 14, 20 ... Transmission , 15 ... Light emitting diode (LED), 16 ... Acceleration sensor, 17 ... Portable device control unit, 17a, 22a ... Memory, 18 ... Battery, 19 ... Transistor, 22 ... In-vehicle control unit, 23 ... Door lock mechanism.

Claims (5)

A portable device having a manually operable operation unit and a drop detection sensor for detecting a fall of the portable device body, and executing a predetermined process when the fall of the portable device body is detected by the drop detection sensor In
Power supply intermittent means for intermittently supplying power to the drop detection sensor, and control means for performing power supply to the drop detection sensor by the power supply intermittent means for a certain period of time based on detecting an operation on the operation unit. A portable machine characterized by A locking request that includes a manually operable operation unit and a drop detection sensor that detects a fall of the portable device body, and requests locking of a vehicle door to an in-vehicle device provided in the vehicle based on an operation on the operation unit. In a portable device that wirelessly transmits a signal and executes a predetermined process when the fall detection sensor detects the fall of the portable device body,
The power supply interrupting means for intermittently supplying power to the fall detection sensor, and the power supply when an operation on the operation unit is detected or when a radio signal transmitted from the in-vehicle device to a communication area outside the vehicle compartment is received. And a control unit configured to supply power to the drop detection sensor for a certain period of time by the intermittent unit. The portable device according to claim 1, further comprising notification means for notifying that the portable device main body is dropped, wherein the predetermined processing is processing for performing notification by the notification means for a predetermined time. The fall detection sensor is an acceleration sensor that detects the acceleration of the portable device body, and the detection of the fall of the portable device body is performed based on the acceleration of the portable device body detected through the acceleration sensor,
The control means continues to supply power to the acceleration sensor by the power supply interrupting means during the period when the notification means performs notification, and based on the acceleration of the portable device body detected by the acceleration sensor during that period. The portable device according to claim 3, wherein when detecting an operation that is presumed that a person is carrying the portable device main body, the notification by the notification unit is stopped and the power supply to the acceleration sensor is interrupted. . The portable device according to claim 4, wherein the operation presumed that the person is carrying the portable device body is a lifting operation of the portable device body or a walking operation of a person carrying the portable device body.

Images