WO2013018350A1 - 指令検出装置 - Google Patents
指令検出装置 Download PDFInfo
- Publication number
- WO2013018350A1 WO2013018350A1 PCT/JP2012/004823 JP2012004823W WO2013018350A1 WO 2013018350 A1 WO2013018350 A1 WO 2013018350A1 JP 2012004823 W JP2012004823 W JP 2012004823W WO 2013018350 A1 WO2013018350 A1 WO 2013018350A1
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- WO
- WIPO (PCT)
- Prior art keywords
- command
- time
- detection
- state
- output
- Prior art date
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/125—Discriminating pulses
- H03K5/1252—Suppression or limitation of noise or interference
- H03K5/1254—Suppression or limitation of noise or interference specially adapted for pulses generated by closure of switches, i.e. anti-bouncing devices
Definitions
- the present invention relates to a command detection device for driving a brushless DC motor or the like used in information equipment such as an air conditioner, a water heater equipped with a combustion fan motor, an air purifier, a copying machine, and a printer.
- a control command when a control command is given to a brushless DC motor (hereinafter, simply referred to as a motor), an analog voltage is applied, and the analog voltage value is converted into a speed or a torque to be used as a control command. Also, the analog voltage value may be compared with a constant voltage value, and the comparison result may be used as a control command for switching the control state.
- a comparator with hysteresis is used as a voltage value comparator so that the control command does not change in response to unintended minute fluctuations in the voltage value. It is done.
- FIG. 3 is a block diagram of a conventional command detection device.
- a comparator 120 with hysteresis in the command detection device 110 compares a command input applied from the outside with a constant voltage value that operates in a hysteresis manner, and outputs a control command.
- FIG. 4 is a diagram for explaining the operation of a conventional command detection device.
- the operation of the conventional command detection device 110 will be described with reference to FIG.
- the command input voltage value
- the control command is switched from the control state 1 to the control state 2, and the threshold value is changed from the threshold value A to the threshold value B by a hysteresis operation. Switch to.
- the control command maintains the control state 2 if it does not fall below the threshold value B.
- the control command is switched from the control state 2 to the control state 1.
- the comparator is operated by avoiding chattering time zones that occur at the time of switch switching by dulling the voltage change of the command input with a resistor and a capacitor, and the intention of the control command The change which is not done is suppressed.
- the circuit to which the command input is applied usually has an input range, and it is necessary to effectively use the input range in order to obtain various commands for control.
- the above-described command detection device 110 according to the prior art has a problem that a voltage width required for detection of command input becomes wide.
- the threshold value A and the threshold value B have electrical variations ⁇ and ⁇ , respectively. Further, a voltage difference is required between the threshold value A and the threshold value B in order to perform a hysteresis operation so that the control command does not change unintentionally due to minute fluctuations in the command input. For this reason, detection of this command input requires at least a voltage range of AB ⁇ + ⁇ . As a result, there has been a problem that the input range that can be used for command input to other controls is narrowed or the command detection device cannot be used.
- the conventional method using a resistor and a capacitor has a problem in that the control command varies due to a small variation in the command input except for the command input in which the variation time is generally determined, such as chattering that occurs when the switch is switched.
- the command detection device of the present invention includes a comparator, a detection state selector, a time detector, and a detection time switch.
- the comparator compares a command input input from the outside with a constant voltage value, and outputs the comparison result as a first output state or a second output state.
- the detection state selector selects a valid output state from the two output states output by the comparator.
- the time detector measures the duration of the enabled output state, and switches the control command when the duration reaches a predetermined set time.
- the detection time switcher switches the set time of the time detector.
- the valid output state selected by the detection state selector is switched by a control command.
- FIG. 1 is a configuration diagram of a command detection device according to an embodiment of the present invention.
- FIG. 2 is a diagram for explaining the operation of the command detection device according to the embodiment of the present invention.
- FIG. 3 is a block diagram of a conventional command detection device.
- FIG. 4 is a diagram for explaining the operation of a conventional command detection device.
- FIG. 1 is a configuration diagram of a command detection device according to an embodiment of the present invention
- FIG. 2 is a diagram illustrating an operation of the command detection device according to an embodiment of the present invention.
- the command detection device 10 includes a comparator 20, a detection state selector 30, a time detector 40, and a detection time switch 50.
- a command input applied from the outside is input to a comparator 20 in the command detection device 10.
- the comparator 20 outputs a comparison result obtained by comparing the command input (voltage value) with a constant voltage value as a High signal (first output state) or a Low signal (second output state).
- the detection state selector 30 selects a valid signal (output state) from among High or Low signals (two output states) output from the comparator 20.
- the time detector 40 measures the duration of the validated signal, and outputs a control command corresponding to the validated signal when the duration reaches a predetermined set time.
- the signal enabled by the detection state selector 30 is switched by a control command output by the time detector 40.
- the set time of the time detector 40 is determined by a set signal output from the detection time switch 50, and the set signal may be switched using a control command. That is, the set time of the time detector 40 may be switched by a control command output from the time detector 40.
- FIG. 2 shows time changes of the command input, the comparison signal, the duration, and the control command.
- the duration is the time during which a valid signal among the comparison signals continues.
- the comparison signal that is the output signal of the comparator 20 changes from Low to High (time t1).
- the time detector 40 starts measuring the duration time.
- the elapsed time is shown in the horizontal direction and the duration is shown in the vertical direction, so that the duration increases with the passage of time.
- the output signal of the comparator 20 becomes Low.
- the detection state selector 30 determines that the comparison signal is invalid, the duration measured by the time detector 40 is reset, and the control command that is the output of the time detector 40 does not change and the control state 1 is maintained. Is done.
- the measurement of the duration time by the time detector 40 starts.
- the control command changes and the control state is switched from the control state 1 to the control state 2 (time t4).
- the signal enabled by the detection state selector 30 switches from High to Low in response to a change in the control command, the detection state selector 30 determines that the comparison signal is invalid, and the duration is reset.
- the command input falls below the threshold value A (time t5)
- the measurement of the duration time by the time detector 40 starts.
- the control command of the time detector 40 changes and the control state is switched from the control state 2 to the control state 1.
- the predetermined set time determined by the detection time switch 50 can be changed by changing the control command by using the control command, but it is not always necessary to switch the set time. Absent. Further, the predetermined set time determined by the detection time switch 50 may be switched by an arbitrary method without using a control command.
- This operation suppresses fluctuations in control commands due to unintended minute fluctuations in command input, and suppresses the voltage width required for command detection compared to conventional command detection devices without providing a hysteresis operation for the threshold value of the comparator. be able to.
- the command detection device of the present invention includes a comparator, a detection state selector, a time detector, and a detection time switch.
- the comparator compares a command input input from the outside with a constant voltage value, and outputs the comparison result as a first output state or a second output state.
- the detection state selector selects a valid output state from the two output states output by the comparator.
- the time detector measures the duration of the enabled output state, and switches the control command when the duration reaches a predetermined set time.
- the detection time switcher switches the set time of the time detector.
- the valid output state selected by the detection state selector is switched by a control command.
- the set time for switching by the detection time switch may be switched by a control command. Therefore, a change can be given to the ease of switching of a control command.
- the command detection device of the present invention can be widely used as a command detection device in applications where it is necessary to suppress fluctuations in control commands due to unintended minute fluctuations such as motor drive devices.
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Electronic Switches (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
Description
20 比較器
30 検出状態選択器
40 時間検出器
50 検出時間切替器
Claims (2)
- 外部から入力される指令入力と一定電圧値を比較し、その比較結果を第1の出力状態または第2の出力状態として出力する比較器と、
前記比較器が出力する前記2つの出力状態のうち、有効とする出力状態を選択する検出状態選択器と、
前記有効とした出力状態の継続時間を計測し、前記継続時間が所定の設定時間に達すると制御指令を切替える時間検出器と、
前記時間検出器の前記所定の設定時間を切替える検出時間切替器と、を備え、
前記検出状態選択器が選択する前記有効とする出力状態は前記制御指令により切替わることを特徴とした指令検出装置。 - 前記検出時間切替器が切替える前記所定の設定時間は、前記制御指令により切替わることを特徴とした請求項1に記載の指令検出装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012800036939A CN103222193A (zh) | 2011-08-03 | 2012-07-30 | 指令检测装置 |
US13/883,514 US20130214817A1 (en) | 2011-08-03 | 2012-07-30 | Command detecting device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011169842 | 2011-08-03 | ||
JP2011-169842 | 2011-08-03 |
Publications (1)
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WO2013018350A1 true WO2013018350A1 (ja) | 2013-02-07 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2012/004823 WO2013018350A1 (ja) | 2011-08-03 | 2012-07-30 | 指令検出装置 |
Country Status (4)
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US (1) | US20130214817A1 (ja) |
JP (1) | JPWO2013018350A1 (ja) |
CN (1) | CN103222193A (ja) |
WO (1) | WO2013018350A1 (ja) |
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CN107741545A (zh) * | 2017-10-27 | 2018-02-27 | 深圳航天东方红海特卫星有限公司 | 一种微小卫星便携24 路oc 指令隔离检测器 |
CN111404517B (zh) * | 2020-04-08 | 2023-11-10 | 北京集创北方科技股份有限公司 | 脉冲消除电路、电压检测电路以及检测方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04274613A (ja) * | 1991-03-01 | 1992-09-30 | Nec Corp | チャタリング除去回路 |
JP2009010827A (ja) * | 2007-06-29 | 2009-01-15 | Toyota Central R&D Labs Inc | ノイズ除去回路及びそれを備えたコンパレータ回路 |
Family Cites Families (2)
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JP2005006381A (ja) * | 2003-06-10 | 2005-01-06 | Hitachi Ltd | スイッチング素子の駆動回路 |
ITMI20112346A1 (it) * | 2011-12-22 | 2013-06-23 | St Microelectronics Srl | Rilevatore di tensione di picco e relativo metodo di generazione di una tensione di inviluppo |
-
2012
- 2012-07-30 CN CN2012800036939A patent/CN103222193A/zh active Pending
- 2012-07-30 US US13/883,514 patent/US20130214817A1/en not_active Abandoned
- 2012-07-30 JP JP2013526756A patent/JPWO2013018350A1/ja active Pending
- 2012-07-30 WO PCT/JP2012/004823 patent/WO2013018350A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04274613A (ja) * | 1991-03-01 | 1992-09-30 | Nec Corp | チャタリング除去回路 |
JP2009010827A (ja) * | 2007-06-29 | 2009-01-15 | Toyota Central R&D Labs Inc | ノイズ除去回路及びそれを備えたコンパレータ回路 |
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JPWO2013018350A1 (ja) | 2015-03-05 |
CN103222193A (zh) | 2013-07-24 |
US20130214817A1 (en) | 2013-08-22 |
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