JP2007013749A - Remote control system of transportation equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein it is necessary to solve conflicting problems of prevention of theft becoming complicated and convenience by taking advantage of various mechanisms in transportation equipment such as an automobile and a remote controller of the transportation equipment which unlocks a door by radio, etc. such as remote entry, is being mounted as its solution means, however, power consumption of a terminal on the mobile side is increased, and battery life becomes shorter by complication as mentioned above. <P>SOLUTION: A power saving means of a remote controller of the transportation equipment is provided by taking advantage of an RF-ID chip. A circuit such as the RF-ID chip which uses received electromagnetic waves also as a power source is considered as a front end and other circuit is not started except in the case of a call to itself. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a remote control system for transportation equipment.

  In recent years, from the viewpoint of improving convenience, doors are opened and closed, and engines are started and stopped by wireless devices called remote entries. This is composed of a base unit, which is an in-vehicle wireless communication device, and a slave unit, which is a portable wireless communication device. As a main method, the identification codes are matched between the master unit and the slave unit. The cordless handset is provided with a switch for controlling the door opening / closing lock and the engine start / stop, and when the switch is depressed, an identification code is transmitted together with a signal indicating that the switch has been depressed. When receiving the signal from the slave unit, the master unit compares the identification code held by the master unit with the identification code in the signal, and if they match, determines the switch pressing information in the signal and instructs the operation according to the switch. . In recent years, in order to increase convenience, when a handset approaches a vehicle equipped with a remote control system for transportation equipment, the in-vehicle base unit communicates with the handset, and the identification codes match. There is also a technique for releasing the door lock (Patent Document 1).

JP 2004-143806 A

  In order to perform wireless communication, the slave unit is operated by a battery built in the slave unit for both transmission and reception. On the transmission side, only the circuit operation at the time of use is sufficient, but since the reception timing is unknown, it is necessary to operate constantly or intermittently, causing the battery to be consumed.

  Also, in places where there are many remote control systems for transportation equipment such as parking lots, other remote control systems turn on the power of the slave unit due to electromagnetic waves that are unnecessary for the slave unit that has been transmitted. There was sometimes acceleration.

  Therefore, a receiving unit that operates using the electromagnetic wave received by the slave unit is provided, and the battery is used only when it is determined as the master unit by a signal superimposed on the electromagnetic wave transmitted from the master unit.

  According to the present invention, power consumption during reception standby can be substantially eliminated. The saving effect is particularly high when there is a remote control system for a large number of transportation equipment such as parking lots.

  In the present invention, it is composed of a parent device mounted on a transport device such as an automobile and a portable child device, and the child device has a receiving unit that uses the received electromagnetic wave as a power source.

  An embodiment of the present invention will be described with reference to FIG. In FIG. 1, 1 is a slave unit that is a portable wireless communication device, 2 is an automobile as an example of a transportation device, 10 is an RF-ID chip that is an example of a non-contact recognition means, 11 is a microcomputer, 12 is an antenna, 20 Is a base unit that is a vehicle-mounted radio communication device / control device, 200 is a personal authentication unit, 201 is a radio communication unit, 202 is a control unit, 203 is a lock unit, and 204 is an antenna.

  The base unit 20 mounted on the automobile 2 transmits its identification code as an electromagnetic wave (not shown) via the antenna 204 by the control unit 202 and the wireless communication unit 201. At this time, the identification code may be a code different from that of other automobiles and may be encrypted or cyclically encoded to prevent eavesdropping as it is. The identification code may be transmitted intermittently in order to reduce the power consumption of the automobile battery. The electromagnetic wave transmitted from the parent device 20 propagates in the air and is received by the antenna 12 of the child device 1. The electromagnetic wave received by the antenna 12 is input to the RF-ID chip 10. The RF-ID chip 10 uses the input electromagnetic wave as power to operate itself, compares the identification code superimposed on the electromagnetic wave with the identification code built in the RF-ID chip 10, If it does, a start signal is sent to the microcomputer 11, and if they do not match, nothing is done. The microcomputer 11 that has received the activation signal as described above starts up using the battery 112 built in the slave unit 1 as a power source, performs various processes, and transmits a self-identification code to the master unit 20 via the antenna 12. . At this time, the identification code transmitted from the child device 1 may be the same as or different from the identification code transmitted by the parent device 20, and the code itself may be encrypted or cyclically to prevent eavesdropping. It may be encoded. The master unit 20 mounted on the automobile 2 that has received the identification code transmitted from the slave unit 1 via the antenna 204 demodulates the radio signal by the radio communication unit 201 and receives the demodulated signal. Judge whether the handset is genuine and release the door lock. After that, personal authentication based on biometric information is performed in the automobile 2 by the personal authentication means 200, and if the driver is registered in advance, the engine start switch (not shown) can be released to start the engine. And With the configuration as described above, since the microcomputer of the slave unit 1 is activated and reacts only when the slave unit 1 enters the range where the electromagnetic waves transmitted from the master unit 20 reach, the slave unit 1 It is possible to prevent the built-in battery from being consumed.

  In the first embodiment, the personal authentication unit 200 is arranged on the parent device 20 side. However, there is an embodiment in which the personal authentication unit 200 is arranged in the child device 1 as the personal authentication unit 113 and connected to the microcomputer 11. This will be described with reference to FIG. Configuration examples similar to those in FIG.

  The base unit 20 mounted on the automobile 2 transmits its identification code as an electromagnetic wave (not shown) via the antenna 204 by the control unit 202 and the wireless communication unit 201. At this time, the identification code may be a code different from that of other automobiles and may be encrypted or cyclically encoded to prevent eavesdropping as it is. The identification code may be transmitted intermittently in order to reduce the power consumption of the automobile battery. The electromagnetic wave transmitted from the parent device 20 propagates in the air and is received by the antenna 12 of the child device 1. The electromagnetic wave received by the antenna 12 is input to the RF-ID chip 10. The RF-ID chip 10 uses the input electromagnetic wave as power to operate itself, compares the identification code superimposed on the electromagnetic wave with the identification code built in the RF-ID chip 10, If it does, a start signal is sent to the microcomputer 11, and if they do not match, nothing is done. The microcomputer 11 that has received the start signal as described above starts using the battery 112 built in the handset 1 as a power source. After that, personal biometric information is acquired by the personal authentication means 113 installed in the slave unit 1 and is compared with the personal information registered in the slave unit 1 or the master unit 20 in advance. Then, a self-identification code and a notification that personal authentication has been completed are transmitted to the parent device 20 via the antenna 12. At this time, the identification code transmitted from the child device 1 may be the same as or different from the identification code transmitted by the parent device 20, and the code itself may be encrypted or cyclically to prevent eavesdropping. It may be encoded. The master unit 20 mounted on the automobile 2 that has received the identification code transmitted from the slave unit 1 and the notification that the personal authentication has been completed via the antenna 204 demodulates the radio signal by the radio communication unit 201. Then, the control means 202 that has received the demodulated signal determines whether or not the slave unit is genuine, and allows the door lock to be released and the engine to be started. Here, so far, the example in which the personal information acquired by the personal authentication unit 113 and the personal information registered in advance is compared with the slave unit 1 has been described. Personal information may be transmitted to the parent device 20 and the parent device 20 may perform comparison processing. With the configuration as described above, since the microcomputer of the slave unit 1 is activated and reacts only when the slave unit 1 enters the range where the electromagnetic wave transmitted from the master unit 20 reaches, the slave unit 1 is incorporated. Battery consumption can be prevented.

  Next, the internal structure of the subunit | mobile_unit 1 is demonstrated using FIG. Components similar to those in FIGS. 1 and 2 are denoted by the same reference numerals. The operation will be described below.

The base unit 20 mounted on the automobile 2 transmits its identification code as an electromagnetic wave (not shown) via the antenna 204 by the control unit 202 and the wireless communication unit 201. At this time, the identification code may be a code different from that of other automobiles and may be encrypted or cyclically encoded to prevent eavesdropping as it is. The identification code may be transmitted intermittently in order to reduce the power consumption of the automobile battery. The electromagnetic wave transmitted from the parent device 20 propagates in the air and is received by the antenna 12 of the child device 1. The electromagnetic wave received by the antenna 12 is input to the RF-ID chip 10. The RF-ID chip 10 receives the electromagnetic wave input by the built-in RF circuit 100, tunes and detects the identification code superimposed on the specified frequency, and outputs it to the comparison circuit 104. At the same time, the RF circuit 100 receives an electromagnetic wave including a specified frequency and outputs a signal after detection to the power supply circuit 101. The power supply circuit 101 smoothes and accumulates the input signal from the RF circuit 100 using a capacitor or the like, and outputs it as power to the comparison circuit 104, the clock generation circuit 102, and the ROM 103. The clock generation circuit 102 supplied with power generates a clock and outputs it to the ROM 103. The ROM 103 to which the clock is input outputs the identification code stored therein to the comparison circuit 104. The comparison circuit 104 compares the identification code input from the RF circuit 100 from the master unit 20 with the identification code stored in the ROM 103 and if activated, the microcomputer 11 is activated. Output. FIG. 4 is a flowchart of the operation so far. When the microcomputer 11 receives a signal indicating that it matches from the comparison circuit 104 of the RF-ID chip 10, the microcomputer 11 starts up using the battery 112 built in the slave unit 1 as a power source. The microcomputer 11 transmits the self-identification code to the master unit 20 via the RF circuit 111 and the antenna 12. At this time, the identification code transmitted from the child device 1 may be the same as or different from the identification code transmitted by the parent device 20, and the code itself may be encrypted or cyclically to prevent eavesdropping. It may be encoded.

  The subsequent operation is the same as in the first embodiment.

FIG. 5 shows the internal configuration of the RF-ID chip 10 in more detail. The electromagnetic wave received by the antenna 12 is converted into an electric signal and input to the RF circuit 100 and input to the detection circuit 1001. The signal detected by the detection circuit 1001 is branched into two and input to the demodulation circuit 1002 in the RF circuit 100 and the smoothing circuit 1011 in the power supply circuit 101. The demodulation circuit 102 demodulates the detected signal, extracts an identification code from the electromagnetic wave, and outputs it to the comparison circuit 104. On the other hand, the smoothing circuit 1011 smoothes the input signal and inputs it to the storage circuit 1012 in the power supply circuit 101 as a DC signal. The accumulation circuit 1012 accumulates the input DC signal in the capacitor 1013 to generate power in the RF circuit 100 and outputs it to the clock circuit 102, the ROM 103, and the comparison circuit 104. The clock circuit 102 supplied with power generates a clock signal and outputs the clock signal to the ROM 103. The ROM 103 outputs the identification code stored therein to the comparison circuit 104 by the input clock signal. The comparison circuit 104 compares the identification code transmitted from the master unit 20 input from the RF circuit 100 with the identification code stored in the inside input from the ROM 103, and if they match, the microcomputer 11 Start output is output to (not shown in FIG. 5). The above operation is performed. The subsequent operation is the same as that in the first embodiment.

  FIG. 6 shows the internal configuration of the RF-ID chip 10 in more detail. The electromagnetic wave received by the antenna 12 becomes an electric signal and is input to the RF circuit 100 and input to the detection circuit 1001. The signal detected by the detection circuit 1001 is branched into two and input to the demodulation circuit 1002 in the RF circuit 100 and the smoothing circuit 1011 in the power supply circuit 101. The demodulation circuit 102 demodulates the detected signal, extracts an identification code from the electromagnetic wave, and outputs it to the comparison circuit 104. On the other hand, the smoothing circuit 1011 smoothes the input signal and inputs it to the storage circuit 1012 in the power supply circuit 101 as a DC signal. The storage circuit 1012 stores the input DC signal in the capacitor 1013, and the storage amount determination circuit 1014 determines the amount of stored charge. When the accumulation amount determination circuit 1014 determines that the electric charge is accumulated in the capacitor 1013 to the extent that the circuit operation is not hindered, the power is supplied to the RF circuit 100, so that the clock circuit 102, the ROM 103, and the comparison circuit 104 are supplied. And the electric charge accumulated in the capacitor 1013 is output. The clock circuit 102 supplied with power generates a clock and outputs a clock signal to the ROM 103. The ROM 103 outputs the identification code stored therein with the input clock to the comparison circuit 104. The comparison circuit 104 compares the identification code input from the RF circuit 100 from the master unit 20 with the identification code stored inside from the ROM 103, and if they match, the microcomputer 11 (FIG. 6). (Not shown in Fig. 1). The above operation is performed. The subsequent operation is the same as that in the first embodiment.

  In the present embodiment, an example is shown in which the capacitor 1013 is used for charge accumulation, but other types may have the same function.

FIG. 7 shows the internal configuration of the RF-ID chip 10 in more detail. The electromagnetic wave received by the antenna 12 becomes an electric signal and is input to the RF circuit 100 and input to the detection circuit 1001. The signal detected by the detection circuit 1001 is branched into two and input to the demodulation circuit 1002 in the RF circuit 100 and the smoothing circuit 1011 in the power supply circuit 101. The demodulation circuit 102 demodulates the detected signal, extracts an identification code from the electromagnetic wave, and outputs it to the comparison circuit 104. On the other hand, the smoothing circuit 1011 smoothes the input signal and inputs it to the storage circuit 1012 in the power supply circuit 101 as a DC signal. The storage circuit 1012 stores the input DC signal in the capacitor 1013 and outputs it to the storage amount determination circuit 1014, the clock circuit 102, the ROM 103, and the comparison circuit 104. The accumulation amount determination circuit 1014 determines the amount of charge accumulated by the accumulation circuit 1012. When it is determined that charge has accumulated in the capacitor 1013 so as not to hinder circuit operation, the clock circuit 102, the ROM 103, and the comparison A circuit operation permission signal is output to the circuit 104. The clock circuit 102 supplied with power and receiving the circuit operation permission signal generates a clock and outputs the clock signal to the ROM 103. The ROM 103 outputs the identification code stored therein with the input clock to the comparison circuit 104. The comparison circuit 104 compares the identification code from the base unit 20 input from the RF circuit 100 with the identification code stored in the ROM 103 and if it matches, the microcomputer 11 (FIG. 7). (Not shown in Fig. 1). The above operation is performed. The subsequent operation is the same as that in the first embodiment.

  In the present embodiment, an example is shown in which the capacitor 1013 is used for charge accumulation, but other types may have the same function.

  FIG. 8 shows the internal configuration of the RF-ID chip 10 in more detail. The electromagnetic wave received by the antenna 1000 becomes an electric signal and is input to the detection circuit 1001. The signal detected by the detection circuit 1001 is input to the demodulation circuit 1002 in the RF circuit 100. The demodulation circuit 102 demodulates the detected signal, extracts an identification code from the electromagnetic wave, and outputs it to the comparison circuit 104. On the other hand, the electromagnetic wave received by the antenna 1004 becomes an electric signal and is input to the detection circuit 1003. The signal detected by the detection circuit 1003 is input to the smoothing circuit 1011 in the power supply circuit 101. The smoothing circuit 1011 smoothes the input signal and inputs it as a DC signal to the storage circuit 1012 in the power supply circuit 101. The accumulation circuit 1012 accumulates the input DC signal in the capacitor 1013 and outputs it to the clock circuit 102, the ROM 103, and the comparison circuit 104 as electric power in the RF circuit. The clock circuit 102 supplied with power generates a clock and outputs a clock signal to the ROM 103. The ROM 103 outputs the identification code stored therein with the input clock to the comparison circuit 104. The comparison circuit 104 compares the identification code from the base unit 20 input from the RF circuit 100 with the identification code stored in the ROM 103 and if it matches, the microcomputer 11 (FIG. 7). (Not shown in Fig. 1). The above operation is performed. The subsequent operation is the same as that in the first embodiment.

  FIG. 9 shows the internal configuration of the RF-ID chip 10 in more detail.

  The electromagnetic wave received by the antenna 1000 becomes an electric signal and is input to the detection circuit 1001. The signal detected by the detection circuit 1001 is input to the demodulation circuit 1002 in the RF circuit 100. The demodulation circuit 102 demodulates the detected signal, extracts an identification code from the electromagnetic wave, and outputs it to the comparison circuit 104. On the other hand, the electromagnetic wave received by the antenna 1004 becomes an electric signal and is input to the detection circuit 1003. The signal detected by the detection circuit 1003 is input to the smoothing circuit 1011 in the power supply circuit 101. The smoothing circuit 1011 smoothes the input signal and inputs it as a DC signal to the storage circuit 1012 in the power supply circuit 101. The storage circuit 1012 stores the input DC signal in the capacitor 1013, and the storage amount determination circuit 1014 determines the amount of stored charge. When the accumulation amount determination circuit 1014 determines that the electric charge is accumulated in the capacitor 1013 so as not to hinder the circuit operation, the accumulated amount determination circuit 1014 outputs the electric power in the RF circuit to the clock circuit 102, the ROM 103, and the comparison circuit 104. The clock circuit 102 supplied with power generates a clock and outputs a clock signal to the ROM 103. The ROM 103 outputs the identification code stored therein with the input clock to the comparison circuit 104. The comparison circuit 104 compares the identification code from the base unit 20 input from the RF circuit 100 with the identification code stored from the ROM 103, and if they match, the microcomputer 11 (FIG. 9). (Not shown in Fig. 1). The above operation is performed. The subsequent operation is the same as that in the first embodiment.

  In the present embodiment, an example is shown in which the capacitor 1013 is used for charge accumulation, but other types may have the same function.

  FIG. 10 shows the internal configuration of the RF-ID chip 10 in more detail.

  The electromagnetic wave received by the antenna 1000 becomes an electric signal and is input to the detection circuit 1001. The signal detected by the detection circuit 1001 is input to the demodulation circuit 1002 in the RF circuit 100. The demodulation circuit 102 demodulates the detected signal, extracts an identification code from the electromagnetic wave, and outputs it to the comparison circuit 104. On the other hand, the electromagnetic wave received by the antenna 1004 becomes an electric signal and is input to the detection circuit 1003. The signal detected by the detection circuit 1003 is input to the smoothing circuit 1011 in the power supply circuit 101. The smoothing circuit 1011 smoothes the input signal and inputs it as a DC signal to the storage circuit 1012 in the power supply circuit 101. The storage circuit 1012 stores the input DC signal in the capacitor 1013 and outputs it to the storage amount determination circuit 1014, the clock circuit 102, the ROM 103, and the comparison circuit 104. The accumulation amount determination circuit 1014 determines the amount of charge accumulated by the accumulation circuit 1012. When it is determined that the capacitor 1013 has accumulated electric charges so as not to hinder circuit operation, the clock circuit 102, the ROM 103, and the comparison A circuit operation permission signal is output to the circuit 104. The clock circuit 102 supplied with power and receiving the circuit operation permission signal generates a clock and outputs the clock signal to the ROM 103. The ROM 103 outputs the identification code stored therein with the input clock to the comparison circuit 104. The comparison circuit 104 compares the identification code from the base unit 20 input from the RF circuit 100 with the identification code stored in the ROM 103 and if it matches, the microcomputer 11 (FIG. 10). (Not shown in Fig. 1). The above operation is performed. The subsequent operation is the same as that in the first embodiment.

  In the present embodiment, an example is shown in which the capacitor 1013 is used for charge accumulation, but other types may have the same function.

  The present invention is a power saving means effective in a remote control system for transportation equipment.

The structural example of this remote control system. The structural example of this remote control system. The structural example of this remote control system. The operation | movement flowchart of this remote control system. The structural example of the RF-ID chip | tip part of this remote control system. The structural example of the RF-ID chip | tip part of this remote control system. The structural example of the RF-ID chip | tip part of this remote control system. The structural example of the RF-ID chip | tip part of this remote control system. The structural example of the RF-ID chip | tip part of this remote control system. The structural example of the RF-ID chip | tip part of this remote control system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Slave device, 2 ... Car, 10 ... RF-ID chip, 11 ... Microcomputer, 12 ... Antenna, 20 ... Master device, 112 ... Battery, 113, 200 ... Personal authentication means, 201 ... Wireless communication means,
202... Control means, 203... Lock means, 204.

Claims (7)

In a remote control system for transportation equipment consisting of a portable wireless communication device and an in-vehicle wireless communication device,
The portable wireless communication device side is equipped with non-contact recognition means that is activated by external power and a battery-powered control means, and the vehicle wireless communication device side recognizes an individual and operates other devices. A remote control system for transportation equipment, characterized by biometric authentication devices that are permitted, door locks that unlock and lock doors, and control means that control engine start. In a remote control system for transportation equipment consisting of a portable wireless communication device and an in-vehicle wireless communication device,
A non-contact recognition means that is activated by external power and a battery-driven control means are mounted on the portable wireless communication device side, and a biometric authentication device that recognizes an individual on the in-vehicle wireless communication device side, A non-contact recognition means on the side of the portable wireless communication device has a door lock for unlocking / locking the key and a control means for controlling engine start, and surrounding electromagnetic waves including electromagnetic waves from the in-vehicle wireless communication device. A remote control system for transportation equipment characterized by activation. In a remote control system for transportation equipment consisting of a portable wireless communication device and an in-vehicle wireless communication device,
A non-contact recognition unit that is activated by external power on the portable wireless communication device side, a control unit that is driven by a battery, and a biometric authentication device that recognizes an individual and allows other devices to operate, A remote control system for transportation equipment characterized by having a door lock for unlocking / locking a door key and a control means for controlling engine start on the in-vehicle wireless communication device side.   The microcomputer is activated when the identification code superimposed on the electromagnetic wave input from the outside by the non-contact recognition means matches the identification code recorded in the portable wireless communication device. A remote control system for transportation equipment.   3. The microcomputer and the biometric authentication device are activated when the identification code superimposed on the electromagnetic wave input from the outside matches the identification code recorded in the portable wireless communication device. A remote control system for transportation equipment.   3. The remote control system for a transportation device according to claim 1, wherein the portable wireless communication device has two or more antennas for power reception and signal reception. 2. The portable wireless communication device according to claim 1, further comprising means for storing personal biometric information storage means required for personal verification by the biometric authentication device and transmitting the personal biometric information from the storage means when the biometric authentication device is activated. A remote control system for transportation equipment.

Images