WO2012070404A1 - 電力制御装置、電力制御方法、電力制御プログラム及び記録媒体 - Google Patents
電力制御装置、電力制御方法、電力制御プログラム及び記録媒体 Download PDFInfo
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- WO2012070404A1 WO2012070404A1 PCT/JP2011/076007 JP2011076007W WO2012070404A1 WO 2012070404 A1 WO2012070404 A1 WO 2012070404A1 JP 2011076007 W JP2011076007 W JP 2011076007W WO 2012070404 A1 WO2012070404 A1 WO 2012070404A1
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- Prior art keywords
- temperature
- value
- power control
- power
- integration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates to a power control apparatus that controls power supplied to a device.
- these devices may be directly used by the user for a long time, and low temperature burns may be caused depending on the surface temperature.
- Patent Document 1 discloses a technique for controlling power and temperature by power control using a constant temperature threshold as a trigger.
- Patent Document 2 discloses a power control technique for preventing low-temperature burns by performing contact detection of a human body.
- Patent Document 3 discloses a technique for performing warning control for a user of a device on the assumption that the device is placed in a sealed environment from the locus of temperature rise of the device.
- Patent Document 2 has a problem that it cannot be controlled by contact other than the touch sensor unit in addition to the necessity of a function for determining that a human body is in contact. In other words, it is necessary to contact the human body with the touch sensor part, and if it is not in contact, temperature control will not be performed, so if the human body touches a part where the surface temperature other than the touch sensor part is high, low temperature burns will occur. There is a possibility of developing it.
- Patent Document 3 has a problem that when using a function that flows a large current such as a digital recording function, the temperature rise locus becomes steep and the difference from the sealed environment cannot be distinguished. In other words, even if there is no risk of low-temperature burns, there is a problem that the device does not detect it erroneously and performs warning control for the user of the device.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a power control apparatus that can reliably prevent low-temperature burns without impairing user convenience.
- the power control device of the present invention is a power control device that controls the supply of power to a device, a temperature detection unit that detects the temperature of the device, and a numerical value assigned to the temperature of the device detected by the temperature detection unit. And integrating means for integrating, and when the integrated value integrated by the integrating means exceeds a preset value, the power supplied to the device is reduced.
- the power control method of the present invention is a power control method for controlling the supply of power to a device, a temperature detection step for detecting the temperature of the device, and a numerical value assigned to the temperature of the device detected by the temperature detection step.
- the integrated value obtained by integrating the numerical values assigned to the detected device temperatures increases with time. This indicates an increase in the burden due to the device surface temperature on the user who is in contact with the device.
- the preset value is a value with which the user may develop a low temperature burn, it is possible to prevent the low temperature burn of the user in contact with the device.
- the present invention relates to a power control apparatus that controls the supply of power to a device, a temperature detection unit that detects the temperature of the device, and an integration unit that integrates a numerical value assigned to the temperature of the device detected by the temperature detection unit.
- a power control apparatus that controls the supply of power to a device
- a temperature detection unit that detects the temperature of the device
- an integration unit that integrates a numerical value assigned to the temperature of the device detected by the temperature detection unit.
- FIG. 6 is a display state transition diagram showing display state transition during execution of the temperature integration counter control process shown in FIG. 5. It is a table of the integration counter weight for a charge and electric power supply stop. It is a flowchart which shows the flow of the temperature integration counter control process using the table shown in FIG. FIG.
- FIG. 9 is a display state transition diagram showing display state transition during execution of the temperature integration counter control process shown in FIG. 8. It is a graph which shows the relationship between battery temperature and time for demonstrating the effect of this invention. It is another table of integration counter weighting for luminance MIN. It is a flowchart which shows the flow of the temperature integration counter control process using the table shown in FIG. It is another table of integration counter weighting for a charge and electric power supply stop. It is a flowchart which shows the flow of the temperature integration counter control process using the table shown in FIG.
- FIG. 2 shows a schematic block diagram of the mobile phone according to the present embodiment.
- the mobile phone includes a microcomputer 1 composed of a CPU for controlling the entire apparatus, an external power supply cable 2, a USB (Universal Serial Bus) connector 3 for connecting the external power supply cable 2, A battery unit 4 (battery with built-in thermistor), a power supply / charge control unit 5 for controlling power supply and charging, a camera unit 6 (camera module with built-in thermistor), a camera control DSP (Digital Signal Processor) 7, and a display LCD ( (Liquid Crystal Display) 8, LCD control unit 9, built-in memory 10 storing a weighting table, external memory card 11, non-contact IC card control unit 12, one-segment DTV (Digital television) module 13, WLAN (Wireless Local Area Network) control module 14, key and touch panel input unit 15, vibrator 16, The external speaker 17, the handset receiver 18, the handset microphone 19, the audio codec IC 20, the radio control module 21, and the communication control unit 22 are configured.
- a microcomputer 1 composed of a CPU for controlling the entire apparatus, an external power supply cable 2, a USB (Universal
- the mobile phone having the above configuration has a power control function using a temperature integrating counter.
- This power control function is realized by a power control unit (power control device) 100 provided in the microcomputer 1.
- the mobile phone having the above configuration includes at least two power modes, ie, a normal power mode and a power saving mode, as power consumption modes during operation, and the power control unit 100 switches between these power modes for control. It has come to be.
- the normal power mode is a power consumption mode when the mobile phone is normally used.
- the display power of the display LCD 8 is set to the user-set luminance and the display operation is performed.
- the power saving mode is a power consumption mode in which the power consumption is less than that of the normal power mode.
- the display operation of the display LCD 8 is set to the minimum luminance instead of the user-set luminance. It is a mode to perform.
- the power saving mode includes not only reducing power but also stopping power for charging the thermistor built-in battery 4, for example.
- FIG. 1 shows a schematic block diagram of the power control unit 100.
- the power control unit 100 includes a temperature detection unit (temperature detection unit) 101, an integration counter (integration unit) 102, and a power supply amount setting unit 103, as shown in FIG.
- the temperature detection unit 101 detects the temperature of the battery unit 4 and the temperature of the camera unit 6 based on signals from the thermistor of the battery unit 4 and the thermistor of the camera unit 6.
- the integration counter 102 reads the numerical value (weighting value) assigned to the temperature from the temperature detected by the temperature detection unit 101 from the built-in memory 10 or the like storing the weighting table, and adds the weighting value. Then, the weight values are integrated and output to the power supply amount setting unit 103 as an integrated count value.
- the power supply amount setting unit 103 determines whether or not the input integrated count value exceeds a preset value, and when it exceeds, the power supply amount supplied to each unit connected to the microcomputer 1 A control signal is output to a control unit connected to each unit so that the amount becomes a preset amount.
- the output destination of the control signal is the power source / charge control unit 5, the camera control unit 7, the LCD control unit 9, and the like.
- control signal is a signal for switching from the normal power mode to the power saving mode in the mobile phone, and includes contents for instructing to reduce or stop the power.
- control signal is output to the power supply / charge control unit 5
- control is performed to stop the power supply for charging the battery unit 4
- control signal is output to the camera control unit 7
- the backlight is controlled to minimize the luminance of the LCD display unit 8.
- FIG. 3 is a temperature conceptual diagram for explaining the concept of power control by the power control unit 100.
- the horizontal axis indicates time (t)
- the vertical axis indicates temperature (° C.) and the counter value, and an example is shown in which the thermistor temperature of the battery unit 4 is measured.
- the power in the device is stopped in the conventional power control.
- the display on the display panel that is being activated is stopped, and the convenience of the user is impaired. Problems arise.
- the control for reducing the power supplied to the device is performed when the integrated value obtained by integrating the numerical values allocated to the detected temperature of the device exceeds a preset value. Therefore, even if the temperature of the thermistor of the battery unit 4 exceeds the threshold value X, the supply of power to the device is continued as long as the integrated value does not exceed a preset value.
- the operation of the device is not stopped until the time tB when the counter value (integrated value by the integrating counter 102) becomes a preset value Y.
- the display on the display panel that is being activated does not stop suddenly before reaching a state where the user can develop a low temperature burn, and as a result, the convenience of the user is not impaired. There is an effect.
- FIG. 4 shows an example of weighting with respect to the temperature until the control for reducing the LCD brightness to MIN (minimum) is performed.
- a table in which the temperature of the battery unit 4 is associated with the counter weight is used.
- the integration count is performed every 5 seconds.
- the numerical values in the table are set in consideration of each device and the location where the temperature is detected.
- FIG. 5 shows a process flow from when the temperature of the battery unit 4 rises due to the operation of the cellular phone and the integration counter 102 starts integrating the temperature damage until the display brightness of the LCD display unit 8 is reduced to MIN due to the counter over. Indicates.
- the normal power mode is shifted to the power saving mode, and the power consumption is reduced to reduce the temperature of the battery unit 4, that is, the mobile phone temperature.
- the temperature of the thermistor in the battery unit 4 is confirmed (temperature detection) (step S11).
- temperature detection by using a plurality of modules (camera unit 6, LCD display unit 8, etc.) in the mobile phone body, power consumption is increased, and accordingly, the temperature of the battery unit 4 rises.
- the temperature of the thermistor is confirmed.
- step S11 if the preset temperature “Ta0” is not exceeded, the value of the integration counter 102 is reset to “0” (step S12), the process proceeds to step S11 again, and the battery The temperature of the thermistor in section 4 is checked.
- step S11 if the temperature is equal to or higher than the preset temperature “Ta0”, the weighting value of the current temperature is added (calculated) by the integration counter 102 (step S13).
- the weight value of the corresponding temperature is read from the table shown in FIG.
- step S14 it is determined whether or not the value (integrated value) by the integrating counter 102 is a Max value (Camax value) (step S14).
- the value of the integration counter 102 is less than the Camax value, the process proceeds to step S11, the temperature of the thermistor in the battery unit 4 is confirmed, and the integration is continued.
- step S15 a process of changing the luminance of the LCD display unit 8 to MIN is performed (step S15).
- the power supplied from the normal power mode to the power saving mode is supplied to the backlight so that the brightness of the LCD display unit 8 becomes MIN with respect to the LCD control unit 9 controlling the LCD display unit 8. Reduce.
- step S16 the temperature of the thermistor of the battery unit 4 is confirmed (step S16).
- the value of the integration counter 102 is reset to “0”, and the brightness of the LCD display unit 8 is restored to the set value.
- the power mode is changed to the normal power mode, the supplied power is increased (step S17), and the procedure is shifted to step S11 again to check the temperature of the thermistor in the battery unit 4.
- step S16 determines whether the temperature of the thermistor in step S16 is equal to or higher than the preset temperature “Ta0”.
- the brightness MIN of the LCD display unit 8 is maintained until the thermistor temperature is less than “Ta0”, and the thermistor temperature is maintained. Continue checking.
- FIG. 6 shows a display state transition diagram in the above-described temperature integration counter control process.
- the LCD display unit 8 is in any one of the normal temperature display state 23, the high temperature display state 22, and the display MIN setting state 21 by the temperature integration counter control process.
- the room temperature display state 23 is a display state in the normal power mode, and the brightness of the backlight is a set value (here, “5” in 5 stages is a set value). In this state, when the battery thermistor temperature T becomes equal to or higher than “T2”, the state transits to the high temperature display state 22.
- the high temperature display state 22 is a display state in the normal power mode, and indicates a display state when the battery thermistor temperature T is “T2” or higher.
- the backlight setting value is the same as the normal temperature display state 23 and is in five stages. 5 ".
- counting by the integration counter 102 integration counter for luminance control
- the battery thermistor temperature T is not lower than “T0” and the integrated value (counter value) of the integrating counter 102 exceeds a predetermined value during the high temperature display state 22, that is, for temperature control.
- the integration counter is over, the display MIN setting state 21 is entered.
- This display MIN setting state 21 is a display state in the power saving mode, and the setting value of the backlight becomes the MIN value (“1” in five stages), and a pop-up display is made to indicate that the display MIN setting state. In this state, if the battery thermistor temperature T becomes lower than “T0”, the temperature control integration counter is cleared and the normal temperature display state 23 is entered.
- FIG. 7 shows an example of weighting with respect to the temperature until the control for stopping the charging power supply to the battery unit 4.
- a table in which the temperature of the battery unit 4 is associated with the counter weight is used.
- the difference from the table shown in FIG. 4 is that the integration interval is 10 seconds. That is, when this table is used, the integration count is performed every 10 seconds.
- the numerical values in the table are set in consideration of each device and the location where the temperature is detected.
- Fig. 8 shows the flow from when the battery temperature rises due to the operation of the mobile phone and the integration counter starts integrating the temperature damage until the charging power supply is stopped after the counter is over. This control realizes a reduction in terminal temperature due to a reduction in power consumption and a forced power reduction at a dangerous temperature due to continued operation.
- the temperature of the thermistor in the battery unit 4 is checked (step S21).
- the temperature of the thermistor in the battery unit 4 is checked.
- a plurality of modules camera unit 6, LCD display unit 8, etc.
- the temperature of the battery unit 4 rises.
- the temperature of the thermistor is confirmed.
- step S21 if the preset temperature “Ta0” is not exceeded, the value of the integration counter 102 is reset to “0” (step S22), the process proceeds to step S21 again, and the battery The temperature of the thermistor in section 4 is checked.
- step S21 if the temperature is higher than the preset temperature “Ta0”, the weighting value of the current temperature is added by the integration counter 102 (step S23).
- the weight value of the corresponding temperature is read from the table shown in FIG.
- step S24 it is determined whether or not the value of the integration counter 102 is a Max value (Camax value) (step S24).
- the process proceeds to step S21, the temperature of the thermistor in the battery unit 4 is confirmed, and the integration is continued.
- step S25 a charging power supply stop process for the battery unit 4 is performed (step S25).
- the normal power mode is shifted to the power saving mode, and the power supply / charge control unit 5 that controls the battery unit 4 is stopped to supply power to the battery unit 4.
- step S26 the temperature of the thermistor of the battery unit 4 is confirmed.
- the value of the integration counter 102 is reset to “0”, the power saving mode is changed to the normal power mode, and the battery unit 4 is transferred. Is resumed (step S27), the process again proceeds to step S21, and the temperature of the thermistor in the battery unit 4 is confirmed.
- step S26 if the temperature of the thermistor is equal to or higher than the preset temperature “Ta0”, the charging power supply stop to the battery unit 4 is maintained until the temperature of the thermistor becomes lower than “Ta0”. Continue checking the temperature.
- FIG. 9 is a charge / power supply state transition diagram in the above-described temperature integration counter control process.
- the charge / power supply state to the battery unit 4 is any one of the normal charge state 33, the high temperature charge state 31, and the charge / power supply stop state 32.
- the normal charging state 33 is a charging state in the normal power mode, and the integration counter 102 (integration counter for stopping power supply) is cleared. In this state, when the battery thermistor temperature T becomes equal to or higher than “Tb2”, the state transits to the high temperature charge state 31.
- the high temperature charging state 31 is a charging state with normal power, and is a charging state in which the battery thermistor temperature T is “Tb2” to “Tb8”.
- counting by the integration counter 102 integration counter for stopping power supply is started.
- the battery thermistor temperature T is not lower than “Tb0” and the integrated value (counter value) of the integrating counter 102 exceeds a predetermined value during the high-temperature charging state 31, that is, for stopping power supply.
- the integration counter is over, the state transits to the charge / power supply stop state 32.
- This charge / power supply stop state 32 is a charge / power supply state in the power saving mode.
- the power supply stop counter is cleared and the normal charge state 33 is entered. Transition.
- the weighting of the integration counter is managed by the table set for each battery temperature of 1 ° C. as shown in FIGS. 4 and 7, so that the case of the conventional power control is used. The case where the onset of low temperature burn cannot be prevented can be reduced.
- the integration count is performed from the temperature at which damage to the skin, which has not been taken into consideration in the past, and actually becomes “T3” “Tb4”, and low temperature burns are caused. Since it is possible to perform control to stop the power supply at time t1 before the elapsed time t2 that will occur, it is possible to reliably prevent the onset of low-temperature burns.
- the power supply to the device is controlled by detecting the temperature of the battery unit 4 housed in the casing of the mobile phone, but the present invention is not limited to this.
- the power supply to the device may be controlled by directly detecting the temperature of the surface of the casing of the mobile phone.
- the contents of the case of the mobile phone may be detected. Any temperature may be detected as long as the influence can be appropriately determined.
- the integrated value is obtained by counting the weighted values shown in FIG. 4 and FIG. 7 at a constant sample time (5 seconds for the former and 10 seconds for the latter) in the integration counter 102. .
- the method for obtaining the integrated value is not limited to the method described above, and the value obtained by counting the number of samples by changing the sampling time without changing the weighting value of each temperature. It may be used as an integrated value.
- the sampling time may be set to a shorter time as the temperature is higher. In this case as well, it is possible to reduce or stop the power supplied to the device before the low-temperature burn occurs by minimizing damage to the skin of the human body that is in contact with the device.
- FIG. 11 shows an example of a change in sampling time until control for reducing the LCDD luminance to MIN (minimum).
- MIN minimum
- a table in which the temperature of the battery unit 4 is associated with the sampling time is used. Further, the numerical values in the table are set in consideration of each device and the location where the temperature is detected. In this table, the integration counter value is +10.
- FIG. 12 shows the flow of processing from when the battery temperature rises due to the operation of the terminal and the accumulation of temperature damage is started at the sampling time corresponding to the temperature until the display brightness of the LCD is lowered to MIN due to the counter over.
- the terminal temperature is reduced by reducing the power consumption.
- the temperature of the thermistor in the battery unit 4 is checked (step S31).
- the temperature of the thermistor in the battery unit 4 is checked.
- a plurality of modules camera unit 6, LCD display unit 8, etc.
- the temperature of the battery unit 4 rises.
- the temperature of the thermistor is confirmed.
- step S31 if the preset temperature “Ta0” is not exceeded, the value of the integration counter 102 is reset to “0” (step S32), the process proceeds again to step S11, and the battery The temperature of the thermistor in section 4 is checked.
- step S31 if the temperature of the thermistor in step S31 is not less than the preset temperature “Ta0”, the current temperature weighting value is added by the integration counter 102 (step S33).
- a value corresponding to the sampling time of the corresponding temperature is read from the table shown in FIG.
- step S34 it is determined whether or not the value (integrated value) by the integrating counter 102 is the Max value (Camax value) (step S34).
- the process proceeds to step S31, the temperature of the thermistor in the battery unit 4 is confirmed, and the integration is continued.
- step S35 a process of changing the brightness of the LCD display unit 8 to MIN is performed (step S35).
- the power supplied from the normal power mode to the power saving mode is supplied to the backlight so that the brightness of the LCD display unit 8 becomes MIN with respect to the LCD control unit 9 controlling the LCD display unit 8. Reduce.
- step S36 the temperature of the thermistor of the battery unit 4 is checked.
- the preset temperature “Ta0” is not exceeded, the value of the integration counter 102 is reset to “0”, the sampling time is initialized, and the charging power supply is restarted.
- the mode is changed to the normal power mode, the supplied power is increased (step S37), and the procedure is shifted to step S31 again to check the temperature of the thermistor in the battery unit 4.
- step S36 determines whether the temperature of the thermistor in step S36 is equal to or higher than the preset temperature “Ta0”.
- the brightness MIN of the LCD display unit 8 is maintained until the thermistor temperature becomes lower than “Ta0”. Continue checking.
- power control may be performed by changing both the weighting value and the sampling time for each temperature. In this case, it is possible to perform power control with higher accuracy.
- control is as follows.
- FIG. 13 shows an example up to the control for stopping the charging power supply by the integration of the sampling time and the weighting value according to the temperature.
- a table in which the temperature of the battery unit 4, counter weighting, and sampling time are associated is used.
- FIG. 14 shows a flow of processing from when the battery temperature rises due to the operation of the terminal and the integration counter starts integrating the temperature damage at the sampling time corresponding to the temperature until the charging power supply is stopped after the counter is over.
- This control realizes a reduction in terminal temperature due to a reduction in power consumption and a forced power reduction at dangerous temperatures due to continued operation.
- the temperature of the thermistor in the battery unit 4 is checked (step S41).
- the temperature of the thermistor in the battery unit 4 is checked.
- a plurality of modules camera unit 6, LCD display unit 8, etc.
- the temperature of the battery unit 4 rises.
- the temperature of the thermistor is confirmed.
- step S41 if the preset temperature “Ta0” is not exceeded, the value of the integration counter 102 is reset to “0” (step S42), the process proceeds to step S41 again, and the battery The temperature of the thermistor in section 4 is checked.
- step S41 if the temperature is not less than the preset temperature “Ta0”, the sampling time is changed to a value corresponding to the current temperature (step S43), and the weighting value of the current temperature is calculated by the integration counter 102. Add (step S23).
- the value of the sampling time and the weighting value of the corresponding temperature are read from the table shown in FIG.
- step S45 it is determined whether or not the value of the integration counter 102 is a Max value (Camax value) (step S45).
- the process proceeds to step S41, the temperature of the thermistor in the battery unit 4 is checked, and the integration is continued.
- step S46 a process for stopping charging and supplying power to the battery unit 4 is performed (step S46).
- the normal power mode is shifted to the power saving mode, and the power supply / charge control unit 5 that controls the battery unit 4 is stopped to supply power to the battery unit 4.
- step S47 the temperature of the thermistor of the battery unit 4 is confirmed (step S47). If the temperature of the thermistor does not exceed the preset temperature “Ta0”, the value of the integration counter 102 is reset to “0”, the power saving mode is changed to the normal power mode, and the sampling time is initialized. Then, charging and feeding to the battery unit 4 are restarted (step S487), and the process proceeds to step S41 again to check the temperature of the thermistor in the battery unit 4.
- step S47 if the temperature is higher than the preset temperature “Ta0”, the charging / power supply stop to the battery unit 4 is maintained until the temperature of the thermistor becomes less than “Ta0”, Continue checking the temperature.
- ⁇ Program and recording medium What is necessary is just to comprise the electric power control part 100 provided in the microcomputer 1 of the said mobile telephone by hardware logic. Alternatively, it may be realized by software using a CPU (Central Processing Unit) as follows.
- CPU Central Processing Unit
- the power control unit 100 includes a CPU such as an MPU that executes instructions of a program that realizes each function, a ROM (Read Only Memory) that stores the program, and a RAM (Random Access that expands the program into an executable format). Memory) and a storage device such as a memory for storing the program and various data.
- a CPU such as an MPU that executes instructions of a program that realizes each function
- ROM Read Only Memory
- RAM Random Access that expands the program into an executable format
- Memory and a storage device such as a memory for storing the program and various data.
- the above program is a power control program and has the following configuration.
- the power control program includes a computer, a temperature detection procedure for detecting the temperature of the device, an integration procedure for integrating a numerical value assigned to the temperature of the device detected by the temperature detection procedure, and an integration by the integration procedure.
- a power control procedure for performing power control for reducing or stopping the power supplied to the device is executed.
- the power control indication program for realizing the power control unit 100 is not limited to the case where the power control indication program is fixedly carried in the program memory, and the program code of the above program (executable program, intermediate code program, or source program) This can also be achieved by supplying the recording medium on which the information is recorded to the power control unit 100 and reading and executing the program code recorded on the recording medium.
- the recording medium is not limited to a specific structure or type. That is, the recording medium includes, for example, a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. System, a card system such as an IC card (including a memory card) / optical card, or a semiconductor memory system such as a mask ROM / EPROM / EEPROM / flash ROM.
- a tape system such as a magnetic tape and a cassette tape
- a magnetic disk such as a floppy (registered trademark) disk / hard disk
- an optical disk such as a CD-ROM / MO / MD / DVD / CD-R.
- a card system such as an IC card (including a memory card) / optical card, or a semiconductor memory system such as a mask ROM / EPROM /
- the object of the present invention can be achieved even if the power control unit 100 is configured to be connectable to a communication network.
- the program code is supplied via a communication network.
- the communication network is not limited to a specific type or form as long as it can supply program codes to the power control unit 100.
- the Internet intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network (Virtual Private Network), telephone line network, mobile communication network, satellite communication network, etc. may be used.
- the transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type.
- wired lines such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), 802.11 wireless, HDR, mobile phone It can also be used by radio such as a telephone network, a satellite line, and a terrestrial digital network.
- the present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.
- the power saving mode described in this embodiment includes not only the above-described example but also control for saving power by various means.
- a thermistor to the one-segment DTV module 13, the WLAN control module 14, and the CPU for control.
- the CPU executes a high-speed processing with a large amount of calculation such as encoding and decoding of a moving image, the power consumption increases and the heat generation amount also increases.
- the numerical value assigned to the temperature is a weighted value weighted for each temperature, and the integrating means preferably calculates a value obtained by integrating the weighted value as the integrated value.
- the numerical value assigned to the temperature is a sampling time set for each temperature, and the integrating means preferably calculates a count value counted by the sampling time as the integrated value.
- the above power control may be executed by a computer.
- the power control program of the present invention includes a computer, a temperature detection procedure for detecting the temperature of the device, an integration procedure for integrating the numerical value assigned to the temperature of the device detected by the temperature detection procedure, and the integration procedure.
- a power control procedure for performing power control for reducing or stopping the power supplied to the device is executed.
- the power control program may be recorded on a computer-readable recording medium.
- the power control program of the present invention can be executed by a highly versatile computer.
- the present invention is a portable terminal such as a mobile phone, a PDA (Personal Digital Assistant), a notebook personal computer, an electronic book reader, and the like, and can be used for general electronic devices that a user actually operates by hand.
- a portable terminal such as a mobile phone, a PDA (Personal Digital Assistant), a notebook personal computer, an electronic book reader, and the like, and can be used for general electronic devices that a user actually operates by hand.
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Abstract
Description
図2は、本実施の形態に係る携帯電話の概略構成ブロック図を示す。
図1は、電力制御部100の概略構成ブロック図を示す。
図3は、上記電力制御部100による電力制御の概念を説明するための温度概念図である。この図では、横軸に時間(t)、縦軸に温度(℃)及びカウンタ値を示し、電池部4のサーミスタの温度を測定した場合の例を示している。
ここで、上記電力制御部100における、具体的な温度積算カウンタ制御処理について、図4及び図5を参照しながら以下に説明する。ここでは、LCD表示部8の輝度を最小(MIN)にする制御について説明する。
図6は、上記の温度積算カウンタ制御処理における表示状態遷移図を示す。
ここで、上記電力制御部100における、具体的な温度積算カウンタ制御処理の他の例について、図7及び図8を参照しながら以下に説明する。ここでは、電池部4への充電・給電停止制御について説明する。
図9は、上記の温度積算カウンタ制御処理における充電/給電状態遷移図を示す。
以上のように、本発明では、積算カウンタの重み付けを図4、図7に示すように、電池温度1℃ごとに設定されたテーブルで管理しているので、従来の電力制御による場合のように、低温火傷の発症を防止できないという場合を減少させることができる。
ここまでは、積算カウンタ102を用いた積算値として、図4、図7に示すように、温度に対応付けられた重み付け値を積算した値を用いて、電力制御を行うことを説明した。
図11は、LCDD輝度をMIN(最小)へ落とす制御を行うまでのサンプリング時間変化の例を示す。ここでは、電池部4の温度と、サンプリング時間を対応付けたテーブルを用いる。また、テーブルにおける数値は、機器毎、また、温度を検出する箇所などを考慮して設定される。このテーブルでは、積算カウンタ値を+10とする。
図13は、温度に応じたサンプリング時間および重み付け値の積算によって,充電給電を停止する制御までの例を示す。ここでは、電池部4の温度と、カウンタ重み付けと、サンプリング時間とを対応付けたテーブルを用いる。
上記携帯電話のマイコン1内に設けられた電力制御部100は、ハードウェアロジックによって構成すればよい。又は、次のように、CPU(Central Processing Unit)を用いてソフトウェアによって実現してもよい。
2 外部給電ケーブル
3 USBコネクタ
4 電池部
5 電源/充電制御部
6 カメラ部
7 カメラ制御部
8 LCD表示部
9 LCD制御部
10 内蔵メモリ
11 メモリーカード
12 非接触ICカード制御部
13 ワンセグ用DTVモジュール
14 WLAN制御モジュール
15 タッチパネル入力部
16 バイブレータ
17 外部スピーカ
18 ハンドセットレシーバ
19 ハンドセットマイク
21 無線制御モジュール
22 通信制御部
100 電力制御部
101 温度検出部
102 積算カウンタ(積算手段)
103 電力供給量設定部
Claims (6)
- 機器への電力の供給を制御する電力制御装置において、
機器の温度を検出する温度検出手段と、
上記温度検出手段により検出された機器の温度に割り当てられた数値を積算する積算手段とを備え、
上記積算手段によって積算された積算値が、予め設定した値を超えたとき、上記機器に供給する電力を低減することを特徴とする電力制御装置。 - 上記温度に割り当てられた数値は、温度毎に重み付けされた重み付け値であり、
上記積算手段は、上記重み付け値を積算した値を上記積算値として算出することを特徴とする請求項1に記載の電力制御装置。 - 上記温度に割り当てられた数値は、温度毎に設定されたサンプリング時間であり、
上記積算手段は、上記サンプリング時間でカウントしたカウント値を上記積算値として算出することを特徴とする請求項1に記載の電力制御装置。 - 機器への電力の供給を制御する電力制御方法において、
機器の温度を検出する温度検出ステップと、
上記温度検出ステップにより検出された機器の温度に割り当てられた数値を積算する積算ステップと、
上記積算ステップによって積算された積算値が、予め設定した値を超えたとき、上記機器に供給する電力を低減または停止させる電力制御を行う電力制御ステップとを含むことを特徴とする電力制御方法。 - コンピュータに、
機器の温度を検出する温度検出手順と、
上記温度検出手順により検出された機器の温度に割り当てられた数値を積算する積算手順と、
上記積算手順によって積算された積算値が、予め設定した値を超えたとき、上記機器に供給する電力を低減または停止させる電力制御を行う電力制御手順とを実行させることを特徴とする電力制御プログラム。 - 請求項5に記載の電力制御プログラムを記録したコンピュータ読み取り可能な記録媒体。
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