JP2002125301A - Power-saving device for on-vehicle equipment, power- saving control device for the on-vehicle equipment, power-saving system for the on-vehicle equipment and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce as much electrical energy as possible which is consumed by equipment mounted on a vehicle. SOLUTION: By limiting electric power, that is supplied to the equipment mounted on the vehicle according to control signals inputted from external devices, the electric power, that is consumed wastefully can be reduced significantly on the vehicle and to extend, as long as possible, the traveling distance range of the vehicle powered by electric power accumulated in a battery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power-saving device, a power-saving control device, a vehicle-mounted device power-saving system and a storage medium, and more particularly to a power-saving device used in a vehicle. It is something.

[0002]

2. Description of the Related Art Conventionally, in an electric vehicle shared use system, a management center is connected to a user and a management center is connected to a vehicle via a wireless communication line, and various kinds of information are transmitted and received. The use was smooth.

[0003]

However, conventionally, in order to enable communication from the management center even while the vehicle is on standby, a communication terminal of the vehicle for communicating with the management center and a vehicle-mounted controller are conventionally used. , Keyless door controllers, etc. were always energized.

[0004] However, when the place where the vehicle waits is the vehicle center and the charger is connected, the power consumption does not matter so much. When the vehicle is running, or while the vehicle is running, if the vehicle-mounted device is constantly energized as described above,
Electric power stored in a battery, which is a valuable power source for electric vehicles, is wastefully consumed, and as a result, there is a problem that the mileage of the vehicle is reduced. The present invention has been made in view of the above problems, and has as its object to significantly reduce the power consumed on a vehicle.

[0005]

According to the present invention, there is provided an in-vehicle device power saving device for controlling power supplied to an on-vehicle device mounted on a vehicle. In accordance with a control signal input from the outside. According to another feature of the present invention, the power supply restricting means intermittently supplies power to the vehicle-mounted device at intervals according to the control signal input from the outside. . Another feature of the present invention is that the power supply restricting means starts supplying power when a preset interrupt control signal is input during a period when power is not supplied to the on-vehicle device. At the same time, the start of power supply is notified to the on-vehicle device power saving control device provided in the power management center via communication means. Another feature of the present invention is that the preset interrupt control signal is input when a signal for opening a door is received when detecting that a charging paddle is inserted. It is characterized by being done in.

An on-vehicle device power-saving control device according to the present invention is a vehicle-mounted device power-saving device provided at a power management center for controlling the operation of an on-vehicle device power-saving device for controlling electric power supplied to an on-vehicle device mounted on a vehicle. The control device, wherein when the start of power supply is notified to the in-vehicle device via communication means mounted on the vehicle, the in-vehicle device is configured to be intermittent at predetermined intervals. Power supply instructing means for transmitting a command signal for instructing to supply power to the device to the on-vehicle device power saving device.

[0007] A vehicle-mounted device power-saving control device according to the present invention comprises the above-described vehicle-mounted device power-saving device and the above-described vehicle-mounted device power-saving control device.

[0008] The storage medium of the present invention is provided when a power supply to a vehicle-mounted device provided in a vehicle is notified via a communication means mounted on the vehicle at a predetermined interval. A program for causing a computer to execute a process of transmitting to the vehicle a command signal for instructing the in-vehicle device to supply power so as to be intermittent is recorded.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of a vehicle-mounted device power-saving device, a vehicle-mounted device power-saving control device, a vehicle-mounted device power-saving system and a storage medium according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of an in-vehicle device power saving system according to the present invention, and shows functions related to power consumption. As shown in FIG. 1, the in-vehicle system 100 according to the present embodiment includes a charging function 101, a near field communication function 102, an authentication function 103, a vehicle control function 104,
It has a communication function 105, a packet communication function 106, a key system (key cylinder or key box) 108, a door lock 109, a hazard lamp 110, a meter 111, and the like.

In order to prevent power from being wasted by these functions as much as possible, in the present embodiment, a power management function 107 is provided, and an authentication function 103, a vehicle control function 104, a communication function The power consumed by the network 105 and the packet communication function 106 is limited to the minimum necessary.

As shown in the block diagram of FIG. 2, the power management function 107 includes a command analysis unit 1071,
It comprises timer means 1072, line connection control means 1073 and the like.

The command analysis means 1071 controls the timer operation of the timer means 1072 according to the command signal Sc sent from the power management center 20 (see FIG. 3), and limits the power supplied via the line connection control means 1073. Thus, the authentication function 103, the vehicle control function 104, the communication function 105, and the packet communication function 106 are set to sleep at predetermined intervals.

As will be described later with reference to FIG. 4, in response to an interrupt signal Sw which is transmitted when a charging paddle is inserted and a mismatched key ID is transmitted from outside the vehicle, a sleep mode is set. Packet communication function 106
Interrupt wakeup.

Next, the power control procedure will be described with reference to the power management function explanatory diagram of FIG. As shown in FIG. 3, the state of the vehicle 200 can be roughly classified into a stopped state and a running state. The stopped state can be divided into two states, that is, using each function and waiting.

Therefore, in the present embodiment, power control is performed so as to reduce power consumption while minimizing inconvenience felt when using necessary functions.

That is, when the vehicle 200 is in the standby state, (1) a sleep command (for example, an interval of 20 minutes) is sent by the power saving control device 20e (see FIG. 5) provided in the power management center 20.

Then, the power management function 107
The command analysis unit 1071 controls the timer unit 1072 so that each of the authentication function 103, the vehicle control function 104, the communication function 105, and the packet communication function 106 enters a sleep state for an interval of 20 minutes. As a result, (2) the connection of the Dopa line (mobile phone packet communication network) is disconnected, and the vehicle-mounted system of the vehicle 200 is in a power saving state.

When 20 minutes have elapsed since the power saving state, (3) the power supply is started by the timer means 1072 to connect the line, and the packet communication function 106
As a result, a line of the mobile phone packet communication network is established, and this is notified from the vehicle 200 side to the power management center 20 side.

(4) The power management center 20, which has been notified that the line of the cellular phone packet communication network has been established,
It requests the vehicle 200 to transmit the vehicle information.
(5) In response to this request, vehicle information is transmitted from the vehicle 200 to the power management center 20. If there is no special change in the state of the vehicle 200, the power management center 20 receiving this information instructs (6) to return to the sleep state (for example, an interval of 10 minutes).

The power consumption of the in-vehicle system 100 is reduced by repeatedly performing the above-described “sleep state” → “wake-up state” → “sleep state” →.

By the way, even if the power consumption by the on-vehicle device can be saved, if the device does not operate at all when necessary, it becomes very inconvenient in terms of usability. Therefore, in the present embodiment, an interrupt wake-up function is provided in order to respond to a request that the user want to operate even during sleep when the user needs it.

In the present embodiment, an example in which the interrupt wakeup is performed by setting two cases, "when the charging paddle is inserted" and "when the near field communication function 102 operates", will be described. I have.

That is, as shown in FIG. 4, (1) when the interrupt signal Sw is inputted by inserting the charging paddle of the charger 35 into the insertion slot of the vehicle 200, (2) the power management function 107 Operates the packet communication function 106 to establish a line of the mobile phone packet communication network, and transmits to the power management center 20 that the “charge paddle has been inserted and wakeup” has occurred.

(3) The power management center 20 instructs the vehicle 200 to execute a process corresponding to that process from among the processes set to be performed when the charging paddle is inserted and waked up. I do.

On the other hand, (1) when the user Y transmits the key ID using the keyless function provided in the mobile phone 10, the transmitted key ID is received by the short range communication function. , Sent to the authentication function 103.

The authentication function 103 determines whether or not a key ID has been set in advance, and if so, matches the set regular ID with the key ID transmitted from the outside. Perform detection. If the IDs do not match as a result of this detection, it is
To the power management function 107.

(2) Power management function 107
When the notification of the key ID mismatch is received, the packet communication function 106 is operated to establish the line of the cellular phone packet communication network, and the occurrence of the “key ID mismatch wakeup” is notified to the power management center 20. Send.

(3) The power management center 20 instructs the vehicle 200 to execute a predetermined process from among the processes set to be performed at the time of the “key ID mismatch wake-up”. To instruct.

As described above, in the vehicle-mounted device power saving system of the present embodiment, the configuration of the power management function 107 is simplified, and the algorithm required for power saving is implemented by the power saving control device 20e provided on the power management center 20 side. So that you can do it. For this reason, changing the control or performing different control for each vehicle is performed by the power saving control device 20e.
Can be set freely. Further, by arranging the power management function 107 in each vehicle, it is possible to simplify the functions of the power management function 107 required in large quantities, thereby reducing costs.

FIG. 5 is an image diagram showing an outline of an electric vehicle shared use system to which the vehicle-mounted device power saving system of this embodiment is applied. As shown in FIG. 5, the mobile phone 10 communicates with the power management center 20 via a mobile phone network 41 and the Internet 42. Further, the vehicle has a keyless system for instructing the on-vehicle communication device (referred to as an on-vehicle device) 34 attached to each of the vehicles 31 to 3n stored (managed) in the vehicle station 30 to open and close a door key. ing.

The vehicle station 30 of the present embodiment is provided with a plurality of chargers 35 for charging running batteries loaded on the vehicles 31 to 3n, and the user returns the vehicle. In such a case, the charging paddle of the charger 35 is connected to the charging paddle inlet of the return vehicle so that the charging paddle can be charged.

The power management center 20 includes a computer system 20a including a server and a computer, a reservation database 20b, a member database 20c, a vehicle device 20d, a power saving control device 20e, and the like.

In the present embodiment, data communication is performed with the vehicle-mounted device 34 attached to each of the vehicles 31 to 3n via the mobile phone packet communication network 43, and the state management and the state of each of the vehicles 31 to 3n are performed. Control. As the mobile phone packet communication network 43, Dopa can be considered. This is a mobile phone packet communication service provided by NTT DOCOMO, and is a communication network called "Doop".

This portable telephone packet communication network can perform data communication at a maximum of 28.8 kbps by using three communication lines, and employs a "packet communication system" for communication in the wireless part. One packet is 128 bytes, and pays according to the amount of transmitted packets.
Is the basis. Therefore, since the connection between the vehicle-mounted device 34 and the vehicle return management device 20 can be maintained, it is convenient to check the state of each of the vehicles 31 to 3n.

FIG. 6 is a diagram showing an example of the overall configuration of an electric vehicle (EV) shared use system to which the vehicle-mounted device power saving system of the present embodiment is applied. As shown in FIG. 6, the user Y (user) accesses the power management center 20 using a mobile phone, inquires about the usage status, and performs a reservation procedure, a lending procedure, and the like.

Then, as a result of the reservation and lending procedure,
When the vehicle becomes available, the vehicle goes to the vehicle station and the reserved vehicle is rented. Since the vehicle station is unmanned, the lending procedure and the return procedure are performed with the management center 20 via a mobile phone.

When the rental and return procedures of the vehicle are completed as described above, the management center 20 uses the mobile phone packet communication network to obtain the usage status such as the usage time, the mileage, and the remaining battery power from the rental vehicle. Download data. At the same time, the door lock is checked. These controls are performed via the vehicle-mounted device 34 mounted on the vehicle.

After that, the power management center 20 uses the mobile phone packet communication network 43 to stop the rental vehicle from suspending the use permission of the vehicle and to store the user information (member number, password, keyless ID, etc.). ) Instruct erasure. The vehicle receiving the instruction becomes a standby vehicle.

FIG. 7 shows an example of a computer system capable of configuring the power management center 20. FIG. 7 is a diagram showing an internal configuration of a general computer system. 7, reference numeral 1200 denotes a computer PC. PC
1200 includes a CPU 1201 and is stored in a ROM 1202 or a hard disk (HD) 1211 or a floppy (registered trademark) disk drive (F).
D) The device control software supplied from 1212 is executed to comprehensively control each device connected to the system bus 1204.

The program stored in the ROM 1202 or the hard disk (HD) 1211 constitutes a power supply instruction function of the power saving control device 20e of the present embodiment.

Reference numeral 1203 denotes a RAM, which functions as a main memory, a work area, and the like for the CPU 1201. Reference numeral 1205 denotes a keyboard controller (KBC),
B) Control input of instructions from 1209 and devices not shown.

Reference numeral 1206 denotes a CRT controller (CRT)
In C), the display of the CRT display (CRT) 1210 is controlled. 1207 is a disk controller (DK
C), a boot program (a start program: a program for starting execution (operation) of hardware and software of a personal computer), a plurality of applications, a hard disk (HD) 1211 for storing user files, a network management program, and the like, and a floppy disk ( FD)
1212 is controlled.

Reference numeral 1208 denotes a network interface card (NIC) for exchanging data bidirectionally with a network printer, another network device, or another PC via a LAN.

In the above-described embodiment, an example in which the present invention is applied to an electric vehicle shared use system has been described.
The present invention is not limited to electric vehicles, information communication equipment is mounted,
It is applicable to all vehicles that are centrally managed by the management center.

(Other Embodiments of the Present Invention) The present invention is applied to a system composed of a plurality of devices (for example, a host computer, an interface device, a reader, a printer, etc.), and is applied to an apparatus composed of one device. May be applied.

Further, the functions of the above-described embodiment are implemented in an apparatus connected to the above-described various devices or a computer in a system so that various devices are operated so as to realize the functions of the above-described embodiment. Supplies the software program code for performing the
The invention implemented by operating the various devices according to the program stored in U) is also included in the scope of the present invention.

In this case, the program code of the software implements the functions of the above-described embodiment, and the program code itself and means for supplying the program code to a computer, for example, the program The storage medium storing the code constitutes the present invention. As a storage medium for storing such a program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-RO
M, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

When the computer executes the supplied program code, not only the functions described in the above embodiments are realized, but also the OS (operating system) in which the program code runs on the computer. Alternatively, even when the functions described in the above embodiment are realized in cooperation with other application software or the like, it goes without saying that such a program code is included in the embodiment of the present invention.

Further, after the supplied program code is stored in a memory provided in a function expansion board of a computer or a function expansion unit connected to the computer, the function expansion board or the function expansion unit is operated based on the instruction of the program code. The present invention also includes a case where a CPU or the like provided in the apparatus performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

[0051]

As described above, according to the present invention,
Since the power supplied to the in-vehicle device mounted on the vehicle is limited according to a control signal input from the outside, the power wastefully consumed on the vehicle can be significantly reduced, Mileage can be lengthened. Another feature of the present invention is that when a preset interrupt control signal is input during a period in which power is not supplied to the on-vehicle device, power supply starts and power supply starts. The on-board device power saving control device installed in the power management center is notified via the communication means that the necessary functions can be operated when necessary even in the power saving state. Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an embodiment of the present invention and illustrating a main configuration of an in-vehicle device.

FIG. 2 is a block diagram illustrating a schematic configuration of a power management function.

FIG. 3 is a diagram showing an example of a normal operation procedure of a power management function.

FIG. 4 is a diagram illustrating an example of an operation procedure of a power management function when an interrupt wakeup occurs.

FIG. 5 is a block diagram illustrating a schematic configuration example of a vehicle-mounted device power saving system.

FIG. 6 is a diagram illustrating an overall configuration example of an electric vehicle (EV) shared use system.

FIG. 7 is a block diagram illustrating an example of a computer system that can configure a power management center.

[Explanation of symbols]

 REFERENCE SIGNS LIST 20 power management center 20 e power saving control device 30 vehicle station 31 to 3 n vehicle 34 in-vehicle device 35 charger 37 charging paddle 40 charger status transmission means 41 mobile phone network 42 Internet 43 mobile phone packet communication network 50 charge control means 107 power management function

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Makoto Inagaki 300 Takatsukacho, Hamamatsu-shi, Shizuoka Suzuki Co., Ltd. (72) Inventor Hidetaka Nishikori 300 Takatsukacho, Hamamatsu-shi, Shizuoka Suzuki Co., Ltd. (72) Inventor Yasuyuki Konishi 300 Takatsukacho, Hamamatsu-shi, Shizuoka Suzuki Co., Ltd. (72) Inventor Yoshiyuki Asakawa 300 Takatsukacho, Hamamatsu-shi, Shizuoka Suzuki Co., Ltd.F-term (reference) 5G003 CC02 DA02 DA11 FA06 GC05 5H115 PA11 PG04 PI16 PI29 PO07 QN03 QN12 SE06 SL01 SL05 TO30

Claims (7)

[Claims] An on-vehicle device power saving device for controlling power supplied to an on-vehicle device mounted on a vehicle, wherein the power supplied to the on-vehicle device is limited according to a control signal input from the outside. An on-vehicle device power saving device, comprising: 2. The power supply restricting means intermittently supplies power to the on-vehicle device at intervals according to the control signal input from the outside.
An in-vehicle device power saving device according to claim 1. 3. The power supply limiting means starts power supply when a preset interrupt control signal is input during a period in which power is not supplied to the on-vehicle device, and starts power supply. The in-vehicle device power saving device according to claim 1 or 2, wherein the fact is notified to the in-vehicle device power saving control device provided in the power management center via the communication means. 4. The interrupt control signal set in advance,
The in-vehicle device power saving device according to claim 3, wherein the input is performed when a signal for opening a door is received when it is detected that the charging paddle is inserted. 5. An on-vehicle device power saving control device provided at a power management center for controlling operation of an on-vehicle device power saving device for controlling power supplied to an on-vehicle device mounted on a vehicle, When notified that the supply of power to the in-vehicle device has been started via communication means mounted on the
An on-vehicle device power saving control device comprising: a power supply instructing unit for transmitting a command signal for instructing the on-vehicle device to supply power to the on-vehicle device so as to be intermittent at predetermined intervals to the on-vehicle device power saving device. . 6. An in-vehicle device power saving system comprising the in-vehicle device power saving device according to any one of claims 1 to 4 and the in-vehicle device power saving control device according to claim 5. 7. An intermittent operation at a predetermined interval when the start of power supply to an on-vehicle device provided in a vehicle is notified via a communication means mounted on the vehicle. A computer-readable storage medium storing a program for causing a computer to execute a process of transmitting a command signal for instructing the vehicle-mounted device to supply power to the vehicle.