CN100390546C - DC micro-power consumption measuring instrument and method - Google Patents
DC micro-power consumption measuring instrument and method Download PDFInfo
- Publication number
- CN100390546C CN100390546C CNB2004100461875A CN200410046187A CN100390546C CN 100390546 C CN100390546 C CN 100390546C CN B2004100461875 A CNB2004100461875 A CN B2004100461875A CN 200410046187 A CN200410046187 A CN 200410046187A CN 100390546 C CN100390546 C CN 100390546C
- Authority
- CN
- China
- Prior art keywords
- electrical appliance
- measuring instrument
- measuring
- voltage
- power consumption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 238000005265 energy consumption Methods 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000000691 measurement method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005059 dormancy Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The present invention discloses a DC micro-power consumption measuring instrument and a measuring method, which comprises the circuit structure that a first series branch is composed of a regulated power supply and a charge control switch; a second series branch is composed of a moving contact and a first fixed contact of a transfer switch, and the electric appliance end to be measured; a third series branch is composed of the moving contact and a second fixed contact of the transfer switch, and a variable resistor; the measuring instrument is formed by connecting an energy storage capacitor, a standard voltmeter and the three series branches in parallel. One energy storage capacitor of the measuring instrument is fully charged, and forms a farad grade. Standard service voltage is adopted for replacing the ordinary supply power to supply electricity to an electric appliance. The electric quantity consumed by the electric appliance can be worked out by measuring the voltage drop of the capacitor after one or n working cycles or a period of time according to the requirements of measured objects. The measuring instrument can convert measurement with great difficulty into simple measurement, and can obtain relatively scientific and accurate measured values.
Description
Technical field
The present invention relates to a kind of measuring method.
Background technology
Have unstable power consumption detection mode now to the electrical appliance of direct current pettiness power consumption, be difficult to accurately measure Weak current, electric current variation, of short duration time, voltage, change in voltage etc., for example: the frequent mobile phone that uses, infrared induction utensil (feed feeder, door opener), car alarm, plug-in card taximeter or the like.Voltage drop detects than measurement pettiness electric current in the detection method commonly used, pulse width (time), and irregular voltage, current waveform will be easy to many.Just be based on this point, the measurement that difficulty is very big is converted into simple measurement, just can measure the power consumption of the electrical appliance of direct current pettiness power consumption accurately and easily.
Summary of the invention
The purpose of this invention is to provide the little power consumption measurement method of a kind of direct current, Weak current, electric current that it needs to measure in above-mentioned unsettled power consumption can being detected change, of short duration time, voltage, change in voltage etc. are difficult to measure work accurately and are converted into voltage drop in the surveying work cycle, and be not subjected to the influence of load character, it can be pure resistance, also inductance can be arranged, stable or pulse, the special Weak current of dormant state has solved the inconvenient and inaccurate problem of energy consumption measurement of the consuming device of direct current pettiness power consumption effectively.
Technical scheme of the present invention: the circuit structure of the little power consumption measurement method of direct current comprises stabilized voltage supply, energy-storage capacitor, standard voltmeter, variohm, electrical appliance end to be measured and switch; Described stabilized voltage supply and a charging control switch constitute first series arm, the moving contact of described switch and first fixed contact and described electrical appliance end to be measured constitute second series arm, the moving contact of described switch and second fixed contact and variohm constitute the 3rd series arm, described energy-storage capacitor, standard voltmeter and this measuring instrument of above-mentioned three series arms formation in parallel.
The measuring method of the little measurement of power loss instrument of this direct current is that a storage capacitor is full of electric weight, this electric capacity is the farad level, employing standard working voltage, press both positive and negative polarity and insert electrical appliance, enter duty, according to the requirement of measuring object, after one or n work period, measure the voltage drop of electric capacity, and write down the used time; Substitute electrical appliance with variohm again, on all four duplicate measurements is once promptly adjusted resistance and is made voltage drop, used time unanimity, and the energy of obtaining on the resistance to be consumed just equals the energy consumption of electrical appliance.
The present invention compares with traditional metering system, has following advantage and positive effect:
1, use the little power consumption measurement method of direct current that the low-power consumption electrical appliance is carried out consumption detection, can obtain the correct measured value of comparison science, error is from more convenient measurement: voltage measurement; Resistance measurement; The index of this ambiguity of use " stand-by time " has been avoided in time measurement.
2, difficulty is very big measurement is converted into simple measurement.
This measuring method is applicable to the energy consumption of measuring direct current pettiness power consumption consuming device, especially is specially adapted to situation about measuring with conventional method inconvenience: quiet, dynamic energy consumption is greatly different, the intelligent dormancy of long-time standby, the electrical equipment of pulsed electricity consumption.For example: frequent mobile phone, infrared induction feed feeder, door opener, the car alarm that uses, plug-in card taximeter or the like.
Description of drawings
Fig. 1 is the little power consumption measurement method electrical block diagram of direct current of the present invention.
Embodiment
Particular circuit configurations of the present invention is seen Fig. 1, and measuring instrument comprises: stabilized voltage supply, energy-storage capacitor C, normal voltage Table V, variohm W, electrical appliance end to be measured and switch.Described stabilized voltage supply and a charging control switch K1 constitute first series arm, the moving contact of described switch K2 and first fixed contact 1 constitute second series arm with described electrical appliance end to be measured, the moving contact of described switch K2 and second fixed contact 2 constitute the 3rd series arm with variohm W, described energy-storage capacitor C, normal voltage Table V and this measuring instrument of above-mentioned three series arms formation in parallel.
Measuring method step of the present invention and principle are as follows: a storage capacitor is full of electric weight, this electric capacity is the farad level, employing standard working voltage, press both positive and negative polarity and insert electrical appliance, enter duty, according to the requirement of measuring object, after one or n work period, measure the voltage drop of electric capacity, and write down the used time.Substitute electrical appliance with above-mentioned variohm again, on all four duplicate measurements is once promptly adjusted resistance and is made voltage drop, used time unanimity, and the energy of obtaining on the resistance to be consumed just equals the energy consumption of electrical appliance.
This measuring method can be offset capacity fall off; The measuring error that the voltage table internal resistance is brought into, and the capability value size that needn't know electric capacity accurately avoid the error ratio of electric capacity bigger, the problem of the bad measurement of vast capacity.
The course of work: the K1 switch connection, to the energy-storage capacitor charging, and, make electrical appliance finish the initialization setting to the electrical appliance power supply, enter normal operating conditions.Disconnect the K1 switch, electrical appliance changes by the capacitor power supply, and K2 switch connection 1 to electrical appliance power supply to be measured, is connected 2 and powered to variohm.
At first K2 is dialled during measurement to 1 and measure the electric energy that electrical appliance once to be measured consumes, the needed time when being recorded in constant pressure drop, this section period can be one or n work period or a period of time, again K2 is dialled to 2, and the adjustment variohm makes it fall with primary measuring voltage and the time is the same.Measure the resistance value of this moment, calculate average voltage, promptly can obtain equivalent power consumption.
The principle of work of this measuring instrument is: common power, electrochmical power source for example, electric weight and voltage do not have proportionate relationship, just being difficult to measurement when electrical appliance is the power consumption of pulsed pettiness maybe can not be with general method measurement.The electric weight of being deposited in the capacitor is the proportional with voltage of strictness, the electric energy of storage is consumed by electrical appliance in the capacitor, voltage will reduce, how much relevant it is only with consumed power, irrelevant with the mode that consumes, promptly irrelevant with pulse, dormancy etc., voltage drop detects than measuring the pettiness electric current in the detection method commonly used, pulse width or time, irregular voltage, current waveform will be easy to many.This measuring instrument utilizes these characteristics exactly, and the measurement that difficulty is very big is converted into simple measurement.
Claims (1)
1. the measuring method of the little measurement of power loss instrument of direct current is characterized in that:
A stabilized voltage supply and a charging control switch are constituted first series arm, the moving contact of described switch and first fixed contact and described electrical appliance end to be measured constitute second series arm, and the moving contact of described switch and second fixed contact and variohm constitute the 3rd series arm;
A storage capacitor is full of electric weight, and this electric capacity is the farad level, adopts the standard working voltage, press both positive and negative polarity and insert electrical appliance, enter duty, according to the requirement of measuring object, after one or n work period, measure the voltage drop of electric capacity, and write down the used time; Substitute electrical appliance with above-mentioned variohm again, on all four duplicate measurements is once promptly adjusted resistance and is made voltage drop, used time unanimity, and the energy of obtaining on the resistance to be consumed just equals the energy consumption of electrical appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100461875A CN100390546C (en) | 2004-06-03 | 2004-06-03 | DC micro-power consumption measuring instrument and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100461875A CN100390546C (en) | 2004-06-03 | 2004-06-03 | DC micro-power consumption measuring instrument and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1584605A CN1584605A (en) | 2005-02-23 |
| CN100390546C true CN100390546C (en) | 2008-05-28 |
Family
ID=34601954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100461875A Expired - Fee Related CN100390546C (en) | 2004-06-03 | 2004-06-03 | DC micro-power consumption measuring instrument and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100390546C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107172561A (en) * | 2017-07-10 | 2017-09-15 | 顾康 | A kind of audio amplifier digital indicator |
| CN108226646B (en) * | 2018-01-17 | 2022-02-22 | 珠海极海半导体有限公司 | Sensitive resistance measuring device and measuring method |
| CN109212348A (en) * | 2018-08-31 | 2019-01-15 | 郑州正方科技有限公司 | Condenser type pulse consumption detection system for low-power consumption electrical equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4315212A (en) * | 1978-07-06 | 1982-02-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Electronic watthour meter |
| CN2198610Y (en) * | 1994-06-04 | 1995-05-24 | 李沐荪 | Large volume DC current low consumption measurer |
| US6496783B1 (en) * | 1999-03-05 | 2002-12-17 | Kabushiki Kaisha Toshiba | Electric power calculation system |
-
2004
- 2004-06-03 CN CNB2004100461875A patent/CN100390546C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4315212A (en) * | 1978-07-06 | 1982-02-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Electronic watthour meter |
| CN2198610Y (en) * | 1994-06-04 | 1995-05-24 | 李沐荪 | Large volume DC current low consumption measurer |
| US6496783B1 (en) * | 1999-03-05 | 2002-12-17 | Kabushiki Kaisha Toshiba | Electric power calculation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1584605A (en) | 2005-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105021995B (en) | Portable intelligent accumulator parameter method of testing and tester | |
| CN109696637B (en) | Method for monitoring capacity of lithium disposable battery | |
| CN107093921B (en) | Intelligent charger with power failure detection function | |
| CN107860979B (en) | Method and system for testing capacity and internal resistance of super capacitor energy storage system | |
| CN203490345U (en) | Simple battery electric quantity measuring circuit based on analog comparator | |
| CN117890813B (en) | Battery electric quantity detection method and detection system based on dynamic load condition | |
| CN108288872B (en) | Current self-adaptive lithium battery quick charging device | |
| CN109936157A (en) | A battery management system for microgrid | |
| CN201489096U (en) | Battery internal resistance detection device | |
| CN100390546C (en) | DC micro-power consumption measuring instrument and method | |
| CN202068387U (en) | RC oscillator circuit for capacitance type touch press key | |
| CN204302347U (en) | Microcomputer-recognized intelligent universal meter | |
| CN201583635U (en) | Capacity detection circuit for power lithium batteries | |
| CN201449284U (en) | High-precision solar bathroom scale | |
| CN103135064A (en) | Online testing method of electric quantity of lithium iron phosphate battery | |
| CN202794284U (en) | Multifunctional intelligent electric power meter | |
| CN206818846U (en) | A kind of energy-storage battery detection management device | |
| CN206038872U (en) | Battery voltage supervisory circuit | |
| CN205015399U (en) | Battery connection piece contact impedance measuring circuit | |
| CN2700885Y (en) | DC micro power consumption measuring instrument | |
| CN214380174U (en) | a mobile power | |
| CN213544776U (en) | Battery power detection circuit applied to power quality device | |
| CN202710651U (en) | Device for measuring direct voltage and current | |
| CN209570677U (en) | A kind of electric quantity detecting circuit | |
| CN202275109U (en) | Pen-shaped digital DC single table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080528 Termination date: 20100603 |