JPH0976839A - Power supply control device to be mounted on vehicle and power control method for electric equipment mounted on the vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply electric power to important electric equipment for a long time even in the case where an abnormality occurs in a vehicle. SOLUTION: When a sensor unit 101 detects the generation of abnormality of a vehicle, the sensor unit 101 converts the degree of abnormality to a numeric value for output. In each priority setting switch arranged in electric equipment 105-108, the respective priority of the electric equipment 105-108 is previously set on the basis of the priority setting signal 110. When the generation of abnormality of a vehicle is detected by the sensor unit 101, the abnormality level signal 109 is input to each power supply control unit 102 arranged in the electric equipment 105-108, and the power supply control unit 12 compares a degree of abnormality indicated by the abnormality level signal 109 with the priority, which is set by the priority setting switch, and outputs the power supply switching signal 104. A power source unit 103 controls the power supply to the electric equipments 105-108 in response to the power supply switching signal 104.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply control device for controlling power supply to electric equipment mounted on an automobile and a power supply control method for electric equipment mounted on the automobile.

[0002]

2. Description of the Related Art Currently, many electric devices such as audio devices and air conditioners are installed in automobiles. Especially,
In recent automobiles, a navigation system that measures your own vehicle position and displays the vehicle position on a map to guide you to your destination, or an advanced car phone that allows you to talk while moving Electrical equipment is also being installed.

In an automobile equipped with such an electric device, an accident reporting system has been developed which links a navigation system and a mobile phone to report the vehicle position to an appropriate engine when a vehicle accident occurs (Japanese Patent Laid-Open No. 6-242242).ー 119
(See Japanese Patent No. 578).

FIG. 4 is a block diagram showing an outline of a conventional vehicle accident reporting system mounted on a vehicle. In FIG. 4, 401 is a sensor unit for detecting the occurrence of a vehicle accident, and 402
Is a control unit that controls the automobile telephone 403 according to the output signal from the sensor unit 401, 403 is an automobile telephone, 404 is a navigation system equipped with an electronic map, and 405 is voice information for specifying the vehicle position. A voice synthesis unit, 406 is a dial mechanism for dialing in the car telephone 403, 4
07 is a message memory storing voice information corresponding to various messages, 408 is a voice / signal conversion unit for converting voice information into a voice signal compatible with an external communication network, 409 is a transmission unit for the external communication network, and 410 Is a sensor output signal which is the output of the sensor unit 401, 411 is a call command signal for making a call to the car telephone 403, 412 is a reading start signal for outputting a predetermined message from the message memory 407, and 413 is from the message memory 407. Voice information, 414 is a dial signal, 415 is position information for specifying the position of the vehicle, 416 is voice information from the voice synthesizer 405, and 417 is a voice / signal converter.
It is a voice signal from 408.

Next, details of the operation of the automobile accident reporting system will be described. First, the sensor unit 401 outputs a sensor output signal 410 by detecting a vehicle accident. The control unit 402 has a calling command signal 411 for dialing the dial mechanism 406 of the car telephone 403 and a reading start signal for outputting voice information 413 corresponding to a predetermined message from the message memory 407. Outputs 412. The navigation system 404 outputs position information 415 corresponding to the current vehicle position, and the voice synthesizing unit 405 synthesizes and outputs voice information 416 according to the position information 415. The voice / signal conversion unit 408 converts the voice information 413 and the voice information 416 into a voice signal 417 and outputs it to the transmission unit 409. The transmitting unit 409 outputs the dial signal 414 and the voice signal 417 to the external communication network to notify the vehicle position to an appropriate external organization.

[0006]

When a vehicle accident or the like occurs, for example, a navigation system for detecting the vehicle position and a car telephone for communicating with the outside are
It is a very important electric device from the viewpoint of early rescue of accidents. When the power supply capacity of a battery, which is an on-board power storage means, decreases due to a vehicle accident or the like, power is continuously supplied to unnecessary electric devices in spite of an abnormal situation, and important electric devices (here, navigation systems and The time when power is supplied to the car phone may be shortened. Therefore, there is a possibility that communication for notifying the occurrence of a vehicle accident or the like may be interrupted in the middle, or in the worst case, the notification cannot be made at all. This is not limited to navigation systems and car phones, but when an abnormal situation occurs, the power supply to the electrical equipment that is important for responding to the abnormal situation is cut off, and the electrical equipment responds to the abnormal situation. You may not be able to.

The present invention solves such a conventional problem. Even when a vehicle abnormality occurs, it is possible to supply electric power to important electric equipment for a long time, and the electric power storage means has a power remaining. An object of the present invention is to provide a power supply control device and a power supply control method that can efficiently consume the remaining power even when the amount is small.

[0008]

In order to achieve the above object, the power supply control device according to the first aspect of the present invention detects a vehicle abnormality, and responds to the content of the abnormality in a plurality of levels. An abnormality detection unit that outputs an abnormal level signal by attaching an alarm, and a priority setting unit that sets the priority of each electric device to a plurality of electric devices that are mounted on the vehicle and are subject to power control; When the occurrence of the above occurs, the priority order set by the priority order setting means is compared with the level signal from the abnormality detection means, and a comparison means for outputting a comparison signal corresponding to the result and a comparison signal from the comparison means are provided. It is characterized in that it is provided with a power supply means for controlling the power supply correspondingly.

According to another aspect of the power control method of the present invention, a priority order is set for each of a plurality of electric devices mounted on a vehicle and subjected to power control, and the priority order is set in comparison with an electric device having a low priority order. It is characterized in that electric power is preferentially supplied to electric equipment having a high priority.

Further, in the electric power control method according to the third aspect of the present invention, priority is set for each of a plurality of electric devices which are mounted on the vehicle and are to be subject to electric power control, and the abnormality detecting means detects the vehicle abnormality. During the period, electric power is preferentially supplied to an electric device having a higher priority than an electric device having a lower priority.

Further, in the electric power supply method according to the fourth aspect, during the period when the vehicle abnormality is detected by the abnormality detecting means,
Electric power is preferentially supplied to an electric device that is installed in a vehicle and that includes a communication unit that communicates with the outside and a position measuring unit that measures the position of the vehicle, as compared with other electric devices mounted in the vehicle. It is characterized by

According to a fifth aspect of the power supply control device of the present invention, a power storage means for storing the power supplied to the electric equipment mounted on the vehicle and a power remaining amount for detecting the remaining amount of the power stored in the power storage means. A plurality of electric power sources that are mounted on the vehicle and that are subject to power control and that include a quantity detection means and a power supply level selection means that selects a power supply level corresponding to the remaining power level detected by the remaining power level detection means. It is characterized in that the equipment is provided with power control means for controlling the power consumption in the electric equipment in association with the power supply level selected by the power supply level selection means.

The power control method according to a sixth aspect of the present invention detects the remaining amount of electric power in a power storage means mounted on a vehicle and storing electric power, and consumes electric power in a plurality of electric devices mounted on the vehicle and subjected to power control. Is controlled in accordance with the remaining amount of electric power of the power storage means.

[0014]

According to the power supply control device of the first aspect of the present invention, the abnormality detecting means detects the vehicle abnormality, performs the leveling in a plurality of stages corresponding to the content of the abnormality, and outputs the abnormality level signal. And a priority setting means for setting the priority of each of the electric devices mounted on the vehicle to be subject to power control, and the priority set by the priority setting means when a vehicle abnormality occurs. And a level signal from the anomaly detection means are compared with each other, a comparison means for outputting a comparison signal corresponding to the result is provided, and a power supply means for controlling the power supply corresponding to the comparison signal from the comparison means is provided. As a result, when the vehicle abnormality occurs, the power supply unit can preferentially supply the electric power to the high-priority electric device in accordance with the content of the vehicle abnormality. It is possible to use a long time critical electrical equipment to accommodate both accident.

According to another aspect of the power control method of the present invention, a priority order is set for each of a plurality of electric devices mounted on a vehicle and subjected to power control, and the priority order is set in comparison with the electric devices having a low priority order. By preferentially supplying the electric power to the electric device having the high priority, it becomes possible to supply the electric power to the electric device having the high priority for a long time as compared with the electric device having the low priority. For example, it is possible to use an important electric device for a long time to cope with a vehicle accident when a vehicle abnormality occurs.

According to the electric power control method of the third aspect, priorities are set for a plurality of electric devices mounted on the vehicle and subjected to electric power control, and the vehicle abnormality is detected by the abnormality detecting means. During the period when the vehicle abnormality is detected, the electric device having the lower priority is supplied to the electric device having the higher priority than the electric device having the lower priority. Since it is possible to supply electric power to an electric device having a higher priority than that for a long time, it is possible to use an important electric device for a long time to cope with a vehicle accident when a vehicle abnormality occurs.

According to another aspect of the power supply method of the present invention, the vehicle position and the communication means mounted on the vehicle for communicating with the outside are measured while the vehicle abnormality is detected by the abnormality detecting means. Electric power is preferentially supplied to the electric devices that respectively configure the position measuring means as compared with other electric devices mounted on the vehicle, so that the electric devices that respectively configure the communication means and the position measuring means are different from each other. Since it is possible to supply electric power for a longer time than other electric devices, it is possible to use important communication means and position measuring means for a long time to cope with a vehicle accident when a vehicle abnormality occurs. become.

According to another aspect of the power supply control device of the present invention, the power storage means for storing the power supplied to the electric equipment mounted on the vehicle and the remaining amount of the power stored in the power storage means are detected. A plurality of electric power remaining amount detecting means and electric power supply level selecting means for selecting an electric power supply level corresponding to the electric power remaining amount detected by the electric power remaining amount detecting means, and being mounted on the vehicle and subjected to electric power control. Control means provided in each of the electric devices to be subject to power control by providing the electric device with power supply means for controlling power consumption corresponding to the power supply level selected by the power supply level selecting means. Since the means controls the power consumption in each electric device in accordance with the remaining amount of power in the power storage device, for example, when the remaining amount of power in the storage device becomes low, By controlling the electric device so that the power consumption of the electrical equipment can be suppressed, it is possible to consume the remaining power efficiently.

According to the power control method of the sixth aspect, the remaining amount of power in the power storage means mounted on the vehicle and storing the power is detected, and the plurality of electric devices mounted on the vehicle and subjected to the power control are detected. By controlling the power supply in accordance with the remaining amount of power in the power storage unit, the power consumption in each electric device is controlled in accordance with the remaining amount of power in the power storage unit. When the power consumption is reduced, it is possible to control the electric devices so that the power consumption of each electric device is suppressed according to the remaining power amount, and to efficiently consume the remaining power.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a block diagram showing a schematic configuration of a first embodiment of a power supply control device of the present invention mounted on a vehicle, FIG.
FIG. 3 is a block diagram showing a configuration of a power supply control unit in the first embodiment of the present invention. In FIG. 1, reference numeral 101 denotes a sensor unit that detects an abnormality that has occurred in a vehicle, sets a level corresponding to the content of the abnormality, and outputs an abnormality level signal, 102
Is a power supply control unit disposed in each of the electric devices 105 to 108 mounted on the vehicle, 103 is a power supply unit disposed in each of the electric devices 105 to 108, and 104 is output from the power supply control unit 102 to the power supply unit 103. The power supply switching signals 105, 106, 107 and 108 are output from the sensor unit 101 which is an abnormality detecting means, and are output from the sensor unit 101 which is an abnormality detecting means. An abnormal level signal that numerically indicates the degree of abnormality, 110 is a priority setting signal for setting the priority of the electric devices in the vehicle, and the electric device 105 to 108 in advance before the use of the device, respectively. Is output. In FIG. 2, 201 is an electric device corresponding to the priority setting signal 110.
Priority setting switch to set the priority of 105 to 108,
Reference numeral 203 denotes a priority signal indicating the priority set by the priority setting switch 201, 202 denotes a comparison unit for comparing the priority indicated by the priority signal 201 and the abnormal level signal 109, and corresponds to the comparison result. Power supply switching signal
Outputs 104.

Next, the power supply operation of the power supply control device of the first embodiment will be described. When detecting a vehicle abnormality, the sensor unit 101 quantifies and outputs the degree of the abnormality, for example, a slight vehicle failure or a serious vehicle accident. Here, when the value indicated by the abnormality level signal 109 is large, it is determined that the degree of abnormality is large, and as an example, it is assumed that the sensor unit 101 detects “2” as the degree of abnormality. In the power supply control device of the first embodiment, the reason for determining the vehicle abnormality is not particularly limited. The priority setting switch 201 disposed in each of the electric devices 105 to 108 causes the electric device 105 to receive the priority setting signal 110.
Priority levels of 108 to 108 are set in advance. Here, when the value indicated by the priority order signal 203 is large, it is determined that the priority order is high, and as an example, the audio equipment 106 is “1”, the air conditioner 108 is “2”, and the priority order is low.
"3" for navigation system 105, car phone 107
Is set to “4” as a priority order.

An abnormal level signal 109 is input to the electric power supply control unit 102 arranged in each of the electric devices 105 to 108 when the sensor unit 101 detects a vehicle abnormality, whereby the comparison unit 202 causes the abnormal level signal 109. The degree of abnormality indicated by is compared with the priority set by the priority setting switch 201, and the power supply switching signal 104 corresponding to the comparison result is output. When the degree of abnormality indicated by the abnormality level signal 109 is equal to or higher than the priority order set by the priority order signal 203, the comparison unit 202 supplies the power supply switching signal 104 for setting the power supply off. Output to the unit 103. The power supply unit 103 to which the power supply switching signal 104 is input stops the power supply to the electric devices 105 to 108.

Specifically, since the degree of abnormality indicated by the abnormality level signal 109 is "2", the audio device 106 having "1" and "2" set as the priority order.
Also, the air conditioner 108 stops its operation because the power supply is cut off. On the other hand, when the set priority is higher than the degree of abnormality, the power supply unit 103 continues to supply power to the electric devices 105 to 108, and thus the priority is set to “3” and “4”. The navigation system 105 and the car phone 107 that have been activated are kept operable. further,
By the power supply unit 103 arranged in the navigation system 105, when communication with the outside is completed by the mobile phone 107 after the occurrence of an abnormality, power consumption is reduced by executing control such that the navigation system 105 is powered off. Can be suppressed and the operating time of the mobile phone 107 can be further extended.

As described above, in the power supply control device according to the first embodiment of the present invention, the priority order is set in advance for each of the electric devices 105 to 108 mounted on the vehicle, so that the vehicle abnormality occurs. Navigation system, which is an important electrical device for dealing with vehicle abnormalities in the event of an accident
Power can be preferentially supplied to the 105 and the car phone 107, and it is possible to prevent wasteful power consumption by the audio device 106 and the air conditioner 108, which are electrical devices of low importance when a vehicle abnormality occurs.

FIG. 3 is a block diagram showing the configuration of a second embodiment of the power supply control device of the present invention mounted on an automobile. Members corresponding to the members described with reference to FIGS. 1 and 2 will be described. The same reference numerals are given and the description thereof is omitted. In FIG. 3, 301 is an electric device 105 mounted in the vehicle.
Battery that stores the power to be supplied to ~ 108, 302 is a battery
A power remaining amount detecting unit for detecting the remaining amount of power in 301, a power supply level selecting unit 303 for selecting a power supply level corresponding to the power remaining amount of the battery 301 detected by the power remaining amount detecting unit 302, 304 Is a level signal corresponding to the power supply level selected by the power supply level selection unit 303, and 305 is a control unit arranged in each of the audio device 106 and the air conditioner 108.

Next, the power supply operation of the power supply control device of the second embodiment will be described. Remaining power detection unit 302
Detects the remaining amount of power in the battery 301 and outputs the detected value of the remaining amount of power to the power supply level selection unit 303. The power supply level selection unit 303 selects one power supply level corresponding to the detected value of the remaining power from a plurality of power supply levels, and a level signal 304 indicating the selected power supply level.
Is output. Here, the power supply level is, for example,
It is assumed that the power supply level selection unit 303 is in one of the binary states of “1” and “0”, and the power supply level selection unit 303 outputs a level signal indicating “1” as the power supply level when the remaining amount of power is sufficient.
A level signal 304 indicating "0" is output as the power supply level of 304 when the remaining amount of power is small. Second
In the power supply control device of the embodiment, the navigation system 105 for measuring the vehicle position and the car phone 107 out of the electric devices 105 to 108 mounted on the vehicle are not the targets of power control, and the audio device 106 and the air conditioner 108 are included. It is the target of power control. Of course, electrical equipment that is the target of power control 10
6 and 108 are not limited to this, and can be freely set according to the intention of the user.

The control unit 305 arranged in each of the electric devices 106 and 108 determines the power supply level based on the level signal 304, and when the power supply level is "1", the power to the audio device 106 and the air conditioner 108 device is determined. When the power supply level is "0" without controlling the supply, the audio device 106 and the air conditioner 306 are controlled so that the power consumption is reduced. Specifically, the control unit 306 arranged in the air conditioner 108
Controls the air conditioner 108 so that the power consumption is reduced by changing the target temperature set in the air conditioner 108 to reduce the load, and the control unit 305 arranged in the audio device 106 controls the audio device 106. The audio device 106 is controlled so that power consumption is reduced by turning off the power.

As described above, in the power supply control device according to the second embodiment of the present invention, the control section 305 provided in each of the electric devices 106 and 108 to be the target of power control is
Corresponding to the remaining power of the battery 301, the electric devices 106, 108
The power consumption of the electric device 10 is controlled so that when the remaining power of the battery 301 becomes low, the power consumption of the electric devices 106 and 108 is suppressed according to the remaining power.
By controlling 6, 108, it becomes possible to efficiently consume the remaining power of the battery 301.

The power supply control devices of the first and second embodiments of the present invention are considered to be installed in an electric vehicle, and when installed in an electric vehicle, they can be used to improve running performance. It is possible to contribute.

[0030]

As described above, claim 1 of the present invention
According to the power supply control device described above, when the vehicle abnormality occurs, it becomes possible to preferentially supply power to an electric device having a high priority in response to the content of the vehicle abnormality. In the event of occurrence of, it becomes possible to use important electric equipment for a long time to cope with a vehicle accident.

Further, according to the power control method of the second aspect, it becomes possible to supply electric power for a long time to an electric device having a high priority compared to an electric device having a low priority. It is possible to use important electric equipment for a long time in order to cope with a vehicle accident when a vehicle abnormality occurs.

Further, according to the power control method of the third aspect, during the period when the vehicle abnormality is detected, electric power having a higher priority is supplied to the electric equipment having a higher priority than electric equipment having a lower priority. Since it is possible to supply the electric power, it is possible to use an important electric device for a long time in order to cope with a vehicle accident when a vehicle abnormality occurs.

Further, according to the power supply method of the fourth aspect, it is possible to supply electric power to the electric equipment each having the communication means and the position measuring means for a long time as compared with other electric equipment. Therefore, for example, it becomes possible to use the important communication means and position measuring means for a long time to cope with a vehicle accident when a vehicle abnormality occurs.

According to another aspect of the power supply control device of the present invention, the control means provided in each electric equipment subject to power control corresponds to the electric power in each electric equipment corresponding to the remaining power of the electric storage means. Since the consumption is controlled, for example, when the remaining amount of electric power in the power storage unit becomes low, the electric device is controlled so that the electric power consumption of each electric device is suppressed in accordance with the remaining amount of electric power, and the remaining electric power is controlled. It becomes possible to efficiently consume electric power.

Further, according to the power control method of the sixth aspect, since the power consumption in each electric device is controlled in accordance with the remaining power amount of the power storage means, the remaining power amount of the power storage means decreases, for example. In this case, the electric device can be controlled so that the electric power consumption of each electric device is suppressed in accordance with the remaining amount of electric power, and the remaining electric power can be efficiently consumed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a first embodiment of a power supply control device of the present invention mounted on an automobile.

FIG. 2 is a block diagram showing a configuration of a power supply control unit in the first embodiment of the present invention.

FIG. 3 is a block diagram showing the configuration of a second embodiment of the power supply control device of the present invention mounted on an automobile.

FIG. 4 is a block diagram showing an outline of a conventional vehicle accident reporting system mounted on a vehicle.

[Explanation of symbols]

101 ... Sensor unit, 102 ... Power supply control unit, 103 ... Power supply unit, 104 ... Power supply switching signal, 105 ... Navigation system, 106 ... Audio equipment, 107 ... Car phone, 108 ... Air conditioner, 109 ... Abnormal level signal, 110
… Priority setting signal, 201… Priority setting switch, 2
02 ... comparator, 203 ... priority signal, 301 ... battery,
302 ... Remaining power detection section, 303 ... Power supply level selection section, 304 ... Level signal, 305 ... Control section.

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Claims (6)

[Claims] 1. An abnormality detecting means for detecting an abnormality of a vehicle, leveling a plurality of levels in accordance with the contents of the abnormality, and outputting an abnormality level signal, and being mounted on a vehicle and subjected to power control. For a plurality of electric devices, priority setting means for setting the priority of the electric devices respectively, and when the vehicle abnormality occurs, compare the priority set by the priority setting means with the level signal from the abnormality detecting means. A power supply control device comprising: a comparison unit that outputs a comparison signal corresponding to the result; and a power supply unit that controls the power supply corresponding to the comparison signal from the comparison unit. 2. A priority is set for each of a plurality of electric devices that are mounted on a vehicle and are subject to power control, and the electric devices having a higher priority are given priority over the electric devices having a lower priority. A power supply control method comprising: supplying power to a power supply. 3. An electric device having a low priority in a period in which a priority is set for each of a plurality of electric devices mounted on a vehicle and subjected to power control and a vehicle abnormality is detected by an abnormality detecting unit. An electric power supply control method characterized in that electric power is preferentially supplied to an electric device having a higher priority than that of the above. 4. A vehicle equipped with an electric device, comprising: a communication means mounted on the vehicle for communicating with the outside and a position measuring means for measuring the vehicle position, while the abnormality detecting means detects the vehicle abnormality. A power supply control method characterized in that power is preferentially supplied as compared with other electric devices mounted on the power supply. 5. A power storage unit that stores power supplied to an electric device mounted on a vehicle, a power remaining amount detection unit that detects a remaining amount of power stored in the power storage unit, and the power remaining amount detection unit. A power supply level selecting means for selecting a power supply level corresponding to the remaining power level detected by the electric power supply level selecting means, and a plurality of electric devices to be subjected to power control mounted on the vehicle. A power supply control device comprising a control means for controlling power consumption in an electric device in accordance with a selected power supply level. 6. An electric power remaining amount in a power storage means mounted on a vehicle and storing electric power is detected, and a power consumption of a plurality of electric devices mounted on the vehicle and subjected to power control is calculated as a power remaining amount of the power storage means. A power supply control method characterized by controlling according to an amount.