WO2014050063A1 - 電圧制御装置およびその制御方法 - Google Patents
電圧制御装置およびその制御方法 Download PDFInfo
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- WO2014050063A1 WO2014050063A1 PCT/JP2013/005607 JP2013005607W WO2014050063A1 WO 2014050063 A1 WO2014050063 A1 WO 2014050063A1 JP 2013005607 W JP2013005607 W JP 2013005607W WO 2014050063 A1 WO2014050063 A1 WO 2014050063A1
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- voltage
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/1566—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with means for compensating against rapid load changes, e.g. with auxiliary current source, with dual mode control or with inductance variation
Definitions
- the present invention relates to a voltage control device and a control method thereof, and more particularly, to a voltage control device and a control method thereof capable of suppressing voltage fluctuations due to an operating state of a voltage supply target device.
- Patent Document 1 An example of a control circuit that supplies power to a circuit that receives a wireless transmission signal using infrared rays is described in Patent Document 1.
- the power supply control circuit of Patent Document 1 includes a light receiving element, an amplifier circuit, a signal processing circuit, a D / A (digital / analog) converter, an audio amplifier circuit, a speaker, an auxiliary light receiving element, an auxiliary amplifier circuit, a microcomputer, a switch, and It consists of a power supply and operates as follows.
- the infrared signal is photoelectrically converted by the light receiving element, and the converted electric signal is amplified by the amplifier circuit and input to the signal processing circuit.
- the signal demodulated by the signal processing circuit becomes an analog audio signal in the D / A converter, is amplified by the audio amplifier circuit, and vibrates the speaker.
- the amplifier circuit, the signal processing circuit, the D / A converter, and the audio amplifier circuit are powered by a power source through a switch.
- the infrared signal is also received and photoelectrically converted by the auxiliary light receiving element disposed near the light receiving element.
- the converted electrical signal is amplified by an auxiliary amplifier circuit and input to a microcomputer.
- the switch is opened and closed in accordance with the presence or absence of an input signal to the microcomputer.
- the power supply to the light receiving element, the amplifier circuit, the signal processing circuit, and the D / A converter used for demodulation from the infrared transmission signal to the audio signal is controlled.
- Patent Document 1 Japanese Patent Laid-Open No. 4-196825
- Patent Document 1 the presence or absence of an optical transmission signal based on infrared light, that is, a transient change in a pulsed optical signal causes sudden fluctuations in current consumption of the auxiliary light receiving element, auxiliary amplifier circuit, and computer. There is. As a result, various elements or circuits used for modulation / demodulation of audio signals have malfunctioned, and the power supply itself also has noise.
- FIG. 9 is a configuration diagram of a voltage control device of a related digital coherent optical transmission system.
- the voltage control apparatus 200 includes a photoelectric converter 202, a modulation / demodulation LSI 203, a voltage conversion unit 207, and a power supply 201, and operates as follows.
- the electrical signal is input to the modulation / demodulation LSI 203 and decoded by the modulation / demodulation LSI 203 into a predetermined electrical signal.
- the modulation / demodulation LSI 203 is required to operate at a low voltage, and accordingly, the power supply 201 that supplies power to the modulation / demodulation LSI 203 is lowered.
- the current consumption of the modem LSI 203 tends to increase dramatically. For this reason, fluctuations in current consumption that occur when the electrical signal input to the modulation / demodulation LSI 203 is switched between a conductive state and a non-conductive state (non-conductive state) may be several tens of A levels.
- FIG. 10 is a diagram for explaining the operation in the voltage control apparatus 200.
- FIG. 10 shows temporal changes in the optical signal 211 input to the photoelectric converter 202, the consumption current of the modulation / demodulation LSI 203, and the output voltage of the voltage conversion unit 207, and the two-dot chain line in the vertical direction on the paper is on three graphs. It shows the same time. Further, switching between the power input state (optical input power p1) and the cutoff state (optical input power 0) of the optical signal 211 input to the photoelectric converter 202 is different from the conduction state of the electrical signal input to the modem LSI 203. It corresponds to switching to the conductive state. Referring to FIG.
- the optical signal 211 is switched from the cutoff state (61c) to the input state (61b)
- the electrical signal input to the modem LSI 203 is switched to the conductive state, so that the modem LSI 203 resumes the demodulation operation.
- the current consumption of the modem LSI 203 increases rapidly (64b).
- the load viewed from the voltage conversion unit 207 that is, the output current rapidly increases.
- the voltage conversion unit 207 becomes insufficient in power supply, and the output voltage cannot follow the increase in current consumption (64b) of the modulation / demodulation LSI 203, and the output voltage temporarily decreases suddenly (63b). This may fall outside the recommended operating voltage range of the modem LSI 203.
- the current consumption of the modulator LSI 203 suddenly increases (64b) and then decreases after reaching a peak. Further, the increase (63a) or decrease (63b) of the output voltage 207 does not remain, but gradually returns to the original voltage level (63c) by the feedback control of the circuit built in the modulation / demodulation LSI 203.
- An object of the present invention is to provide a voltage control device and a control method therefor that solve the above-described problem that the output voltage of a voltage supply source changes depending on the operating state of a voltage supply target device. .
- the voltage control device includes a voltage conversion unit that converts a voltage of a power source based on a target voltage and supplies the voltage to a voltage supply target device, and a control unit that controls the target voltage according to an operating state of the voltage supply target device.
- the voltage of the power supply is converted based on the target voltage, supplied to the voltage supply target device, and the target voltage is controlled according to the operating state of the voltage supply target device.
- a stable power supply voltage can be supplied even when the operating state of the voltage supply target device fluctuates.
- FIG. 1 is a block diagram illustrating the overall configuration of the voltage control apparatus 99 according to the first embodiment of the present invention.
- the voltage control device 99 includes a control unit 4 and a voltage conversion unit 7.
- the controller 4 controls the voltage supplied from the voltage converter 7 to the voltage supply target device.
- the fluctuation of the voltage of the voltage conversion unit 7 according to the operation state of the voltage supply target device is controlled to a predetermined voltage.
- a predetermined voltage is a target voltage.
- the control unit 4 outputs a signal 41 and controls the target voltage of the voltage conversion unit 7 according to the operating state of the voltage supply target device based on the signal 41.
- the voltage conversion unit 7 is a DC-DC converter, an AC-DC converter, or the like, converts a voltage 36 supplied from a power supply (not shown) into a target voltage necessary for the operation of the voltage supply target device, and sends it to the voltage supply target device.
- Supply voltage 37 is output.
- the target voltage of the voltage supply target device can be changed by the signal 41 from the control unit 4. Specifically, the target voltage of the voltage conversion unit 7 is determined according to the voltage value of the signal 41, and the output voltage converges on it.
- the voltage supply target device of the first embodiment is, for example, a modulation / demodulation LSI 203 shown in FIG.
- the voltage supply target device will be described as a modulation / demodulation LSI.
- the operation state changes in accordance with an electrical signal input to the voltage supply target device. That is, when the electrical signal is in a conductive state, the voltage supply target device consumes a constant current. In the state where the electric signal is cut off, the current consumption of the voltage supply target device decreases to a certain level. In addition, when the electrical signal is switched from the conductive state to the non-conductive state, the current consumption of the voltage supply target device rapidly decreases.
- the target voltage is changed by a signal 41 from the control unit 4 in accordance with each operation state.
- the voltage level of the target voltage is changed when there are two levels of different consumption currents, which are in a conductive state and a non-conductive state.
- the target voltage is set to two different constant voltage levels accordingly, and then the output voltage of the voltage conversion unit 7 converges.
- a sudden voltage change is applied to the target voltage by the signal 41 so as to suppress a sudden change in current consumption. Accordingly, the fluctuation of the output voltage of the voltage converter 7 is reduced.
- control unit 4 of the first embodiment may acquire an information signal including the above-described operation state from the voltage supply target device in order to acquire the operation state of the voltage supply target device.
- detection part which detects an operation state may be provided, and the operation state of a voltage supply object apparatus may be acquired based on the signal from the detection part.
- the operation state of the voltage supply target device is determined from the acquired information, and the target voltage of the voltage conversion unit 7 is determined based on the operation state.
- FIG. 2 is a block diagram illustrating the overall configuration of the voltage control apparatus 100 according to the second embodiment of the present invention.
- the voltage control apparatus 100 according to the second embodiment has a configuration in which a photoelectric converter 2 and a modulation / demodulation LSI 3 are added to the first embodiment.
- the optical signal 31 transmitted through the optical fiber is input to the photoelectric converter 2, and an electrical signal decoded by digital signal processing is output from the modulation / demodulation LSI 3.
- the voltage supply target device corresponds to the modulation / demodulation LSI 3.
- the photoelectric converter 2 receives an optical signal (optical waveform) 31 transmitted through an optical fiber and converts it into an electrical signal (electric waveform) 33.
- the photoelectric converter 2 uses a photodiode using a material such as GaAs or Si.
- the modulation / demodulation LSI 3 receives the electric signal 33 from the photoelectric converter 2, detects an information signal superimposed on the frequency and phase of the electric signal 33, demodulates it into a predetermined electric signal by digital signal processing, and outputs it.
- the power is supplied by the supply voltage 37 from the voltage conversion unit 7 and operates as described above.
- the control unit 4 receives an electrical signal corresponding to the electrical signal 33 input to the modulation / demodulation LSI 3, and detects a state where the electrical signal is switched between an on state and an off state.
- a signal 41 that switches in accordance with the detected switching timing is output to the voltage conversion unit 7.
- the signal 41 is a signal for controlling the target voltage of the voltage converter 7 and, like the detection signal, holds a constant voltage level before and after the switching timing.
- an electric signal input to the above-described control unit 4 is referred to as a detection signal.
- FIG. 3 is a diagram for explaining the operation of the voltage control apparatus according to the second embodiment of the present invention.
- the time change of the voltage is shown,
- FIG. 3 is the same as the graph of the current consumption of the optical signal 211 and the modulation / demodulation LSI 203 in FIG.
- FIG. 3 is the same as the graph of the current consumption of the optical signal 211 and the modulation / demodulation LSI 203 in FIG.
- FIG. 3 is the same as the graph of the current consumption of the optical signal
- switching between the input state (optical input power p ⁇ b> 1) and the cutoff state (optical input power 0) of the optical signal 31 input to the photoelectric converter 2 is an electric signal 33 input to the modulation / demodulation LSI 3.
- the conduction state of the electrical signal 33 is when there is an information signal
- the non-conduction state of the electrical signal 33 is when there is no information signal.
- the conduction state of the electrical signal 33 corresponding to the input state of the optical signal 31 has a constant voltage level
- the non-conduction state of the electrical signal 33 corresponding to the cutoff state of the optical signal 31 is a constant voltage lower than the conduction state.
- Have a level That is, the electric signal 33 has a predetermined voltage difference, and the upper level of the voltage difference is in a conductive state, and the lower level corresponds to a non-conductive state.
- the detection signal is a signal having two voltage levels corresponding to the input state (optical input power p1) and the cutoff state (71c, optical input power 0) of the optical signal 31.
- the detection signal input to control unit 4 is switched from a low level (72a) to a high level (72c) (switching from an input state of optical signal 31 to a blocking state (71a)).
- the target voltage is switched from a constant low level (73a) to a constant high level (73c) by the signal 41 output from the control unit 4.
- the detection signal is switched from the high level (72c) to the low level (72b) (switching from the blocking state of the optical signal 31 to the input state (71b)) by the signal 41 output from the control unit 4,
- the target voltage is switched from a constant high level (73c) to a constant low level (73b).
- the switching time of the detection signal from the low level (72a) to the high level (72c) is substantially the same as the central time of the rapid decrease (74a) in the current consumption of the modem LSI 3.
- the switching time (72h) of the detection signal from the high level (72c) to the low level (72b) is assumed to be delayed in time from the sudden increase (74b) in the current consumption of the modem LSI 3. That is, the time interval A of the sudden increase (74b) is estimated in advance, and the time later than the time shifted by the time interval A from the switching time from the state (74c) in which the current consumption of the modulation / demodulation LSI 3 decreases to the rapid increase And the time (72h) is set.
- the time interval A is from the time when the consumption current of the modulation / demodulation LSI 3 starts to increase from the low level (74c) to the time when the consumption current decreases after reaching the peak and changes to a constant level.
- the target voltage of the voltage converter 7 is lowered (73a, 73b)
- the supply voltage to the modulation / demodulation LSI 3 is shifted to the lower limit side of the recommended power supply voltage range (75a, 75b).
- the target voltage of the voltage converter 7 is increased (73c)
- the supply voltage to the modem LSI 3 is shifted to the upper limit side of the recommended power supply voltage range (75c).
- a sudden change in the output voltage of the voltage converter 7 shown in FIG. 10 occurs when the optical signal 31 is switched between the blocked state and the input state (71a, 71b).
- the waveform of the output voltage of the voltage converter 7 becomes as shown in the lowermost graph of FIG. That is, even if a sudden change (increase (75e) or decrease (75g)) of the output voltage of the voltage converter 7 occurs, the target voltage is set according to the sudden increase (or decrease in wrinkle) of the output voltage. Since switching is performed, sudden fluctuations in the operating voltage supplied to the modem LSI 3 can be suppressed.
- FIG. 4 is a block diagram illustrating the overall configuration of the voltage control apparatus 101 according to the third embodiment of the present invention.
- the monitoring signal 42 output from the modulation / demodulation LSI 3 is input to the control unit 4.
- the rest of the configuration is the same as that of the second embodiment.
- the monitoring signal 42 is a signal having two voltage levels corresponding to the input state and the cutoff state of the optical signal 31.
- the optical signal 31 is converted into an electric signal 33 by the photoelectric converter 2 and input to the modulation / demodulation LSI 3.
- the modulation / demodulation LSI 3 generally used includes a signal for monitoring the state of the input electric signal 33.
- the monitoring signal 42 is, for example, LOS (Loss-Of-Signal) in which the presence or absence of signal loss is determined based on the amplitude value of the electrical signal.
- OOF Out-Of-Frame
- LOF Liss-Of-Frame
- LOL Liss
- the modem LSI 3 can output various signals in addition to the monitoring signal 42. That is, the information signal described above includes the monitoring signal 42 of the modulation / demodulation LSI 3.
- the detection signal in the second embodiment and the monitoring signal 42 in the third embodiment are set to a constant low voltage level when the optical signal 31 is in the input state, and constant high when the optical signal 31 is in the cutoff state.
- the voltage level is not limited to this.
- a constant high voltage level may be set when the optical signal 31 is in the input state, and a constant low voltage level may be set when the optical signal 31 is in the cutoff state.
- FIG. 5 is a block diagram illustrating the overall configuration of the voltage control apparatus 102 according to the fourth embodiment of the present invention.
- a part of the optical signal 31 is branched, and a signal for detecting an input state and a cutoff state is generated from the branched optical signal 34.
- the same component as the above-mentioned embodiment is represented with the same code
- a voltage control apparatus 102 includes a photoelectric converter 2, a modulation / demodulation LSI 3, a differential signal generation unit 5, a detection / judgment / control unit 6, a voltage conversion unit 7, an optical branching unit.
- a unit 8 and a light detection unit 9 are provided.
- the light branching unit 8 is an element having a function of branching light, and is a half mirror, a beam splitter, a waveguide element or the like.
- the optical branching unit 8 branches a part of the optical signal (optical waveform) 31 transmitted through the optical fiber and takes out the optical signal 34.
- the light wave that has passed through the optical branch 8 is referred to as an optical signal 32.
- the light detection unit 9 is a detection unit that detects an optical signal, receives the optical signal 34, and converts it into an electrical signal. This electric signal is switched between a conductive state and a non-conductive state in accordance with the input state and cutoff state of the optical signal 34.
- the differential signal generation unit 5 includes a differential circuit, and inputs at least a part of the signal 35 of the electric signal described above and outputs a differential signal 38.
- the differential signal 38 corresponds to a waveform obtained by differentiating the electric waveform of the signal 35 with respect to time, and the waveform has a steep rise and fall at the portion of switching between a conductive state and a non-conductive state (81a and 81b in FIG. 6 described later). It is a waveform provided.
- the detection / determination / control unit 6 has a function of controlling the target voltage generated by the voltage conversion unit 7, inputs the differential signal 38 and the reference signal 39, and outputs a signal 43.
- the reference signal 39 having a constant voltage level ( ⁇ REF) is compared with the differential signal 38, the differential signal 38 exceeding the reference signal 39 is detected, and a signal 43 corresponding to the detected signal is output.
- “exceeded” means that the absolute value of the signal level of the differential signal 38 is larger than the absolute value of REF, and the optical waveform 31 and the optical waveform are exceeded by exceeding the REF of the reference signal 39. 32 or the optical waveform 34 determines that the input state and the cutoff state are switched.
- the voltage level of + REF (or -REF) is set to 10 to 20% with reference to the maximum value (or minimum value) of the differential signal 38. Accordingly, the switching between the input state and the cutoff state of the optical signal is detected at an early timing while preventing erroneous detection due to electrical noise included in the differential signal.
- the target voltage has the same steep rise (or fall) in order to mitigate the steep rise (or fall) of the differential signal 38 exceeding + REF (or -REF). Or falling). Further, the fall of the target voltage from the maximum value (or the rise from the minimum value) is more gradual than the fall (or rise) of the differential signal 38 exceeding + REF (or -REF).
- the output voltage of the voltage converter decreases from the peak. The reason why the falling of the target voltage is made gentle is to mitigate the decrease after the peak.
- the rise and fall of the target voltage by the signal 43 will be specifically described as follows.
- the time interval between the rise of the differential signal 38 to the maximum value (or the fall to the minimum value) and the time interval of the rise to the maximum value of the target voltage (or the fall to the minimum value) are approximately the same.
- the time interval of the fall from the maximum value of the target voltage (or the rise from the minimum value) is made longer than the time interval of the fall of the signal 38 from the maximum value (or the rise from the minimum value).
- the time interval of the fall from the maximum value of the target voltage (rise from the minimum value) is adjusted by adjusting the time constant of the differentiation circuit.
- the waveform of the target voltage is a sawtooth waveform.
- FIG. 6 is a diagram for explaining the operation of the voltage control apparatus according to the fourth embodiment of the present invention.
- the time change of the voltage and the output voltage of the voltage conversion part 7 is shown,
- switching between the input state (optical input power p ⁇ b> 1) and the cutoff state (optical input power 0) of the optical signal 32 input to the photoelectric converter 2 is an electric signal 33 input to the modulation / demodulation LSI 3.
- This corresponds to switching between the conductive state and the non-conductive state.
- the conduction state of the electrical signal 33 corresponding to the input state of the optical signal 32 has a certain voltage level.
- the non-conductive state of the electrical signal 33 corresponding to the blocked state of the optical signal 32 has a constant voltage level lower than that of the conductive state. That is, the electric signal 33 has a predetermined voltage difference, and the upper level of the voltage difference is in a conductive state, and the lower level corresponds to a non-conductive state.
- control is performed so that the target voltage is lowered at the time when the signal level of differential signal 38 exceeds constant voltage level ⁇ REF 86 f of reference signal 39.
- the minimum value 86a of the differential signal 38 corresponds to the minimum value 87a of the target voltage.
- control is performed so that the target voltage is raised at a time when the signal level of the differential signal 38 exceeds the constant voltage level + REF 86e of the reference signal 39.
- the maximum value 86b of the differential signal 38 corresponds to the maximum value 87b of the target voltage.
- the time when the falling from the maximum value 87b of the target voltage is finished is a time that is later than the sudden increase (74b) in the power consumption of the modem LSI 3.
- the time interval A of the sudden increase (74b) is estimated in advance, and is set later than the time shifted by the time interval A from the time when the current consumption of the modulation / demodulation LSI 3 is reduced (74c) to the sudden increase.
- the fluctuation of the output voltage of the voltage converter decreases after reaching a peak.
- the reason for delaying the set time is to alleviate output fluctuations in the decreasing process. It should be noted that although the time when the current consumption of the modulator LSI 3 is reduced (74c) to the sudden increase is not coincident with the rising time toward the maximum value 87b of the target voltage, they are almost the same time. Therefore, there is no practical problem by setting the time at which the falling ends from the maximum value 87b of the target voltage as described above.
- the target voltage of this embodiment is set as follows.
- the target voltage of the voltage conversion unit 7 is shifted as falling-minimum value (87a) -rising waveform change.
- the target voltage of the voltage conversion unit 7 is shifted like a rising-maximum value (87b) -falling waveform change.
- the waveform of the output voltage of the voltage converter 7 is as shown in the lowermost graph of FIG.
- the differential signal 38 of this embodiment is a signal obtained by first-order differentiation of the signal 35 as shown in FIG. 5, but is not limited thereto, and may be a signal obtained by second-order differentiation or a signal obtained by differentiating the signal. .
- FIG. 7 is a block diagram illustrating the overall configuration of the voltage control apparatus 103 according to the fifth embodiment of the present invention.
- the optical signal 31 is branched in the state of light, and the branched light is photoelectrically converted and then input to the differential signal generation unit 5.
- the voltage control apparatus 103 of the fifth embodiment a part of the electric signal 33 converted by the photoelectric converter 2 is branched, and the branched signal 40 is input to the differential signal generation unit 5.
- the photoelectric converter 2 has the same operation as that of the light detection unit 9 of the fourth embodiment in addition to the operation of the above-described embodiment.
- the other configuration is the same as that of the fourth embodiment.
- the same component as 4th Embodiment is represented with the same code
- the signal 40 is the same as the signal 35 of the fourth embodiment, and the signal 40 is switched between a conductive state and a non-conductive state according to the input state and the cutoff state of the optical signal 31. Accordingly, the operations of the optical signal and various electric signals are the same as those in the fourth embodiment.
- the signal 40 to be input to the differential signal generation unit 5 is generated without branching the optical signal 31. Accordingly, it is possible to generate a high-quality differential signal 38 with less noise than when generating a differential signal from a part of the weak optical signal 31, and as a result, the output voltage of the voltage conversion unit 7 can be further stabilized. Can be controlled.
- FIG. 8 is a block diagram illustrating the overall configuration of the voltage control apparatus 104 according to the sixth embodiment of the present invention.
- the target voltage of the voltage converter 7 is set by digital signal processing.
- the differential signal generation unit 5 and the detection / determination / control unit 6 of the fourth embodiment are incorporated in the digital controller 10.
- an AD converter 12 is disposed between the light detection unit 9 and the arithmetic unit 10 a of the digital controller 10
- a DA converter 13 is disposed between the voltage conversion unit control unit 10 d and the voltage conversion unit 7 of the digital controller 10. It is arranged.
- the same component as the above-mentioned embodiment is represented with the same code
- the digital controller 10 is an integrated circuit such as a microcomputer, an FPGA (FIELD PROGRAMMABLE GATE ARRAY), a PLD (Programmable Logic Device), a DSP (Digital Signal Processor), and the like. Part 10c and voltage converter control part 10d.
- the AD converter 12 receives at least a part of the electric signal 35 output from the light detection unit 9, converts it into a digital monitor signal 52, and outputs it.
- the signal 35 is an analog signal corresponding to the input state and cutoff state of the optical signal 34.
- the arithmetic unit 10a receives the digital monitor signal 52 that changes according to the optical signal 31, and outputs the signal subjected to the differentiation process to the general control unit 10c, thereby transmitting the fluctuation amount of the optical signal to the general control unit 10c. .
- the general control unit 10c receives a signal from the calculation unit 10a, and transmits information on a rapid change in power consumption of the modulation / demodulation LSI 3 to the modulation / demodulation LSI control unit 10b based on the signal. At the same time, the target voltage of the voltage converter 7 is determined, and information on the target voltage is transmitted to the voltage converter controller 10d.
- the modulation / demodulation LSI control unit 10b outputs a signal 51 for changing the setting of the modulation / demodulation LSI 3 to the modulation / demodulation LSI 3 based on the information received from the general control unit 10c and the monitoring signal 42 described in the third embodiment.
- the modulation / demodulation LSI control unit 10b starts acquiring information from the general control unit 10c earlier than the start time for acquiring monitoring information from the monitoring signal 42, and the modulation / demodulation LSI control unit 10b acquires information from the general control unit 10c.
- the end time is earlier than the end time for obtaining the monitoring information from the monitoring signal 42.
- the timing of the setting change information of the signal 51 is generated using the timings related to the two types of information acquisition.
- the modulation / demodulation LSI 3 causes the optical signal 32 to change abruptly when the optical signal 32 is switched between the input state (conduction state of the electric signal 33) and the cutoff state (non-conduction state of the electric signal 33) by the input of the signal 51. Force control.
- the voltage conversion unit control unit 10d outputs a signal 53 for controlling the output voltage of the voltage conversion unit 7 based on the target voltage information received from the general control unit 10c.
- the DA converter 13 converts the input signal 53 into a signal 54 for controlling the target voltage output from the voltage conversion unit 7 and outputs the signal.
- the optical signal 31 and the optical signals 32 and 34 have the same waveform, and the electrical signal 33 and the signal 35 converted by the photoelectric converter 2 or the light detection unit 9 are electrical waveforms corresponding to the optical signal 31.
- the input state of the optical signal 31 corresponds to the conduction state of the electrical signals 33 and 35
- the cutoff state of the optical signal 31 corresponds to the non-conduction state of the electrical signals 33 and 35.
- the controller 10 detects the interruption state by the digital monitor signal 52. Based on this, the setting of the modulation / demodulation LSI 3 is changed by the signal 51 from the modulation / demodulation LSI control unit 10b to forcibly control the current consumption so as not to change suddenly. At the same time, the target voltage of the voltage converter 7 is lowered through the DA converter 13 by the signal 53 from the voltage conversion controller 10d. After the output voltage of the voltage converter 7 is stabilized, the demodulation operation of the modem LSI 3 is completely stopped by the signal 51 from the modem LSI controller 10b.
- the controller 10 detects the input state by the digital monitor signal 52. Based on this, the setting of the modulation / demodulation LSI 3 is changed by the signal 51 from the modulation / demodulation LSI control unit 10b, and the control is forcibly controlled so as not to start the demodulation operation immediately. At the same time, the target voltage of the voltage converter 7 is raised through the DA converter 13 by the signal 53 from the voltage conversion controller 10d. After the output voltage of the voltage conversion unit 7 becomes stable, the forced stop of the demodulation operation of the modulation / demodulation 3 is canceled by the signal 51 from the modulation / demodulation LSI control unit 10b.
- the demodulation operation start sequence process is controlled at a low speed.
- the change of the target voltage value of the voltage converter 7 can sufficiently follow the increase in the current consumption generated in the modulation / demodulation LSI 3 due to the start of the demodulation operation.
- the AD converter 12 is arranged upstream of the arithmetic unit 10a of the controller 10 and the DA converter 13 is electrically connected downstream of the voltage converter control unit 10d of the controller 10.
- these may be incorporated in the controller 10.
- the AD converter 12 and the DA converter 13 may be removed.
- the controller 10 does not process with a digital signal, but processes with an analog signal.
- an arithmetic unit, an overall control unit, a voltage conversion unit control unit, and a modulation / demodulation LSI control unit that can process an analog signal are used.
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Abstract
Description
また、電圧変換部7の目標電圧を下げると(73a、73b)、変復調LSI3への供給電圧は、推奨電源電圧範囲の下限側にシフトする(75a、75b)。また、電圧変換部7の目標電圧を上げると(73c)、変復調LSI3への供給電圧は、推奨電源電圧範囲の上限側にシフトする(75c)。
3、203 変復調LSI
4 制御部
5 微分信号生成部
6 検出・判定・制御部
7、207 電圧変換部
8 光分岐部
9 光検知部
10 コントローラ
10a 演算部
10b 変復調LSI制御部
10c 総合制御部
10d 電圧変換部制御部
12 AD変換器
13 DA変換器
31、32、34、211 光信号
33 電気信号
35、40、41、43、51、53、54 信号
36 電圧
37 供給電圧
38 微分信号
39 参照信号
42 監視信号
52 デジタルモニター信号
99~104、200 電圧制御装置
201 電源
Claims (13)
- 電源の電圧を目標電圧に基づいて変換して電圧供給対象装置に供給する電圧変換手段と、
前記電圧供給対象装置の動作状態に応じて前記目標電圧を制御する制御手段とを有する電圧制御装置。 - 前記電圧供給対象装置の動作状態を検知する検知手段をさらに備え、
前記制御手段は、前記検知手段からの信号に基づいて前記動作状態を決定する請求項1に記載の電圧制御装置。 - 前記電圧供給対象装置は、前記検知手段からの信号を復号された電気信号へ変換する変復調手段であり、
前記制御手段は、前記検知手段からの信号の導通状態と非導通状態との切り替えの情報を取得する請求項2に記載の電圧制御装置。 - 光信号の少なくとも1部を分岐する光分岐手段と、
当該光分岐手段から分岐される光信号を電気信号へ光電変換する前記検知手段としての光検知手段と、
前記光検知手段の出力から微分信号を生成する生成手段と、
前記微分信号が許容領域を超えることを検出する検出手段と、をさらに備え、
前記制御手段は、前記光検知手段からの信号の導通状態と非導通状態との切り替わる状態を、前記検出手段から検出する請求項2または3に記載の電圧制御装置。 - 前記検知手段からの信号の導通状態と非導通状態との切り替わる状態に対応して、前記検出手段の出力信号が鋸波状に変化し、
前記制御手段は、前記電圧変換手段の目標電圧を、前記鋸波状の電圧変動に制御する請求項4に記載の電圧制御装置。 - 前記制御手段は、前記情報信号と前記検出手段の出力信号とに基づいて、前記検知手段からの信号の非導通状態を検出した場合、前記電圧変換手段の出力の電圧変動が安定した後に前記変復調器の復調動作を停止させ、前記検知手段からの信号の導通状態を検出した場合、前記電圧変換手段の出力の電圧変動が安定した後に前記変復調器の復調動作を開始する請求項2から5の何れか1項に記載の電圧制御装置。
- 前記検知手段からの信号は所定の電圧差を有し、当該電圧差の上位レベルが導通状態であり、前記電圧差の下位レベルが非導通状態である請求項2から6の何れか1項に記載の電圧制御装置。
- 前記制御手段は、前記動作状態を含む情報信号を前記電圧供給対象装置から取得し、前記情報信号に基づいて前記動作状態を決定する請求項1に記載の電圧制御装置。
- 前記電圧供給対象装置は、光信号から光電変換された信号を復調された電気信号へ変換する変復調手段であり、
前記情報信号から取得した前記変復調手段の動作状態に基づいて、
前記制御手段は前記目標電圧を特定の電圧レベルへ制御する請求項8に記載の電圧制御装置。 - 前記変復調手段が導通状態および非導通状態のいずれかであるとき、
前記制御手段は、前記電圧変換手段の目標電圧を2つの異なる電圧レベルとし、前記導通状態の目標電圧が前記非導通状態の目標電圧より高くする請求項9に記載の電圧制御装置。 - 電源の電圧を目標電圧に基づいて変換して電圧供給対象装置に供給し、前記電圧供給対象装置の動作状態に応じて前記目標電圧を制御する電圧制御装置の制御方法。
- 前記動作状態は導通状態または非導通状態であり、前記導通状態および前記非導通状態の目標電圧を2つの異なる電圧レベルとし、前記導通状態の目標電圧が前記非導通状態の目標電圧より低くなるように制御する請求項11に記載の電圧制御装置の制御方法。
- 前記動作状態は導通状態と非導通状態との切り替わる状態であり、前記導通状態から非導通様態への切り替えでは前記目標電圧を下げ、前記非導通状態から導通状態への切り替えでは前記目標電圧を上げる請求項11に記載の電圧制御装置の制御方法。
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