CN107402325A - Watt-hour meter device with optical flare function - Google Patents
Watt-hour meter device with optical flare function Download PDFInfo
- Publication number
- CN107402325A CN107402325A CN201610334878.8A CN201610334878A CN107402325A CN 107402325 A CN107402325 A CN 107402325A CN 201610334878 A CN201610334878 A CN 201610334878A CN 107402325 A CN107402325 A CN 107402325A
- Authority
- CN
- China
- Prior art keywords
- resistance
- micro
- control unit
- optical flare
- measuring circuit
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 75
- 239000000523 sample Substances 0.000 claims abstract description 64
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Led Devices (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention discloses a kind of watt-hour meter device with optical flare function, includes an anode probe, a negative terminal probe, a resistance measuring circuit, a voltage supply unit, a micro-control unit and an optical flare Tip element.The resistance measuring circuit is by the anode probe and the non-essential resistance of negative terminal probe measurement one to obtain a resistance value of the non-essential resistance；The resistance measuring circuit notifies the resistance value of the micro-control unit non-essential resistance；If the resistance value of the non-essential resistance is less than or equal to a default value, the micro-control unit controls optical flare Tip element glisteningly lights.Using watt-hour meter device provided by the invention, when short circuit is measured then by ammeter, the backlight module or light emitting diode of ammeter can be flashed to remind user.
Description
Technical field
The present invention is related to a kind of watt-hour meter device, particularly a kind of watt-hour meter device with optical flare function.
Background technology
Ammeter is with hooking table（clamp meter）It is conventional electron measuring device；Hook table is not required in electrical contact to measure conductor（Such as electric wire）Interior electric current.
Ammeter with hook table there is short-circuit test function to test short circuit；When short circuit is measured then by the ammeter of correlation technique, the ammeter of correlation technique can produce sound to remind user.However, among noisy environment, such as inside factory, user can be difficult sometimes to hear sound caused by the ammeter of correlation technique.
The content of the invention
The shortcomings that to improve above-mentioned prior art, it is an object of the invention to provide a kind of watt-hour meter device with optical flare function.
The present invention provides a kind of watt-hour meter device with optical flare function, applied to a non-essential resistance, should include with the watt-hour meter device of optical flare function：
One anode probe, one end of the anode probe are connected to one end of the non-essential resistance；
One negative terminal probe, one end of the negative terminal probe are connected to the other end of the non-essential resistance, the other end ground connection of the negative terminal probe；
One resistance measuring circuit, the resistance measuring circuit are connected to the other end of the anode probe；
One voltage supply unit, the voltage supply unit are connected to the resistance measuring circuit；
One micro-control unit, the micro-control unit are connected to the resistance measuring circuit；And
One optical flare Tip element, the optical flare Tip element are connected to the micro-control unit,
The wherein resistance measuring circuit is by the anode probe and the negative terminal probe measurement non-essential resistance to obtain a resistance value of the non-essential resistance；The resistance measuring circuit notifies the resistance value of the micro-control unit non-essential resistance；If the resistance value of the non-essential resistance is less than or equal to a default value, the micro-control unit controls optical flare Tip element glisteningly lights.
Also including a display, the display is connected to the micro-control unit,
Wherein the optical flare Tip element is a backlight module.
Wherein the optical flare Tip element is a light emitting diode.
The present invention also provides a kind of watt-hour meter device with optical flare function, applied to a non-essential resistance, should include with the watt-hour meter device of optical flare function：
One anode probe, one end of the anode probe are connected to one end of the non-essential resistance；
One negative terminal probe, one end of the negative terminal probe are connected to the other end of the non-essential resistance, the other end ground connection of the negative terminal probe；
One resistance measuring circuit, the resistance measuring circuit are connected to the other end of the anode probe；
One voltage supply unit, the voltage supply unit are connected to the resistance measuring circuit；
One micro-control unit, the micro-control unit are connected to the resistance measuring circuit；
One optical flare Tip element, the optical flare Tip element are connected to the micro-control unit；And
One auditory tone cues unit, the auditory tone cues unit are connected to the micro-control unit,
The wherein resistance measuring circuit is by the anode probe and the negative terminal probe measurement non-essential resistance to obtain a resistance value of the non-essential resistance；The resistance measuring circuit notifies the resistance value of the micro-control unit non-essential resistance；If the resistance value of the non-essential resistance is less than or equal to a default value, the micro-control unit controls optical flare Tip element glisteningly lights, and the micro-control unit controls auditory tone cues unit sends sound simultaneously.
Also including a display, the display is connected to the micro-control unit,
Wherein the optical flare Tip element is a backlight module.
Wherein the optical flare Tip element is a light emitting diode.
Wherein the auditory tone cues unit is a buzzer.
The present invention also provides a kind of watt-hour meter device with optical flare function, applied to a non-essential resistance, should be included with the watt-hour meter device of optical flare function：
One anode probe, one end of the anode probe are connected to one end of the non-essential resistance；
One negative terminal probe, one end of the negative terminal probe are connected to the other end of the non-essential resistance, the other end ground connection of the negative terminal probe；
One resistance measuring circuit, the resistance measuring circuit are connected to the other end of the anode probe；
One voltage supply unit, the voltage supply unit are connected to the resistance measuring circuit；
One micro-control unit, the micro-control unit are connected to the resistance measuring circuit；
One backlight module, the backlight module are connected to the micro-control unit；And
One auditory tone cues unit, the auditory tone cues unit are connected to the micro-control unit,
The wherein resistance measuring circuit is by the anode probe and the negative terminal probe measurement non-essential resistance to obtain a resistance value of the non-essential resistance；The resistance measuring circuit notifies the resistance value of the micro-control unit non-essential resistance；If the resistance value of the non-essential resistance is less than or equal to a default value, the micro-control unit controls backlight module glisteningly lights, and the micro-control unit controls auditory tone cues unit sends sound simultaneously.
Also include a display, the display is connected to the micro-control unit.
Wherein the auditory tone cues unit is a buzzer.
The present invention has the advantage that the backlight module or light emitting diode of ammeter can be flashed to remind user when short circuit is measured then by ammeter.
Brief description of the drawings
Fig. 1 is the first embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.
Fig. 2 is the second embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.
Fig. 3 is the 3rd embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.
Fig. 4 is the fourth embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.
Fig. 5 is the 5th embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.
Fig. 6 is the sixth embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.
In figure：
10 have the watt-hour meter device of optical flare function；20 non-essential resistances；102 anode probes；
104 negative terminal probes；106 resistance measuring circuits；108 voltage supply units；110 micro-control units；
112 optical flare Tip elements；114 displays；116 auditory tone cues units；118 backlight modules；
120 first divider resistances；122PTC thermistor units；124 measurement end resistance；
126 comparators；128 first input ends；130 second inputs；132 output ends；
134 reference voltage sources；136 analog-digital converters.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Fig. 1 is refer to, for the first embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.A kind of watt-hour meter device 10 with optical flare function is applied to a non-essential resistance 20；There is the watt-hour meter device 10 of optical flare function to include an anode probe 102, a negative terminal probe 104, a resistance measuring circuit 106, a voltage supply unit 108, a micro-control unit 110, an optical flare Tip element 112 and a display 114 for this.The resistance measuring circuit 106 includes one first divider resistance 120, a PTC thermistor unit 122, a measurement end resistance 124, a comparator 126 and a reference voltage source 134.The comparator 126 includes a first input end 128, one second input 130 and an output end 132.Wherein PTC is positive temperature coefficient（positive temperature coefficient）Abbreviation.
One end of the anode probe 102 is connected to one end of the non-essential resistance 20；One end of the negative terminal probe 104 is connected to the other end of the non-essential resistance 20；The other end ground connection of the negative terminal probe 104；The resistance measuring circuit 106 is connected to the other end of the anode probe 102；The voltage supply unit 108 is connected to the resistance measuring circuit 106；The micro-control unit 110 is connected to the resistance measuring circuit 106；The optical flare Tip element 112 is connected to the micro-control unit 110；The display 114 is connected to the micro-control unit 110；One end of first divider resistance 120 is connected to the voltage supply unit 108；One end of the PTC thermistor unit 122 is connected to the other end of first divider resistance 120；The other end of the PTC thermistor unit 122 is connected to the other end of the anode probe 102；One end of the measurement end resistance 124 is connected to the other end of the anode probe 102 and the other end of the PTC thermistor unit 122；The first input end 128 of the comparator 126 is connected to the other end of the measurement end resistance 124；The output end 132 of the comparator 126 is connected to the micro-control unit 110；The reference voltage source 134 is connected to second input 130 of the comparator 126.
The resistance measuring circuit 106 measures the non-essential resistance 20 to obtain a resistance value of the non-essential resistance 20 by the anode probe 102 and the negative terminal probe 104；The resistance measuring circuit 106 notifies the resistance value of the micro-control unit 110 non-essential resistance 20；If the resistance value of the non-essential resistance 20 is less than or equal to a default value, the micro-control unit 110 controls the optical flare Tip element 112 glisteningly to light.In other words, if the resistance value of the non-essential resistance 20 is less than or equal to the default value, then the comparator 126 notifies the resistance value of the micro-control unit 110 non-essential resistance 20 to be less than or equal to the default value so that the micro-control unit 110 controls the optical flare Tip element 112 glisteningly to light.The default value can be for example but the present invention is not limited to 0.1 ohm or 0.5 ohm；It can be for example but the present invention is not limited to an ammeter or a hook table that this, which has the watt-hour meter device 10 of optical flare function,（clamp meter）.
The optical flare Tip element 112 is a backlight module of the display 114, or is arranged at a light emitting diode on the surface of the watt-hour meter device 10 with optical flare function.The PTC thermistor unit 122 is a circuit current-limiting protection unit.The voltage supply unit 108 can provide DC voltage or alternating voltage.
Fig. 2 is refer to, for the second embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.Component narration shown in Fig. 2 is similar to Fig. 1, is succinct factor, is repeated no more in this.Furthermore the resistance measuring circuit 106 also includes an analog-digital converter 136；The analog-digital converter 136 is connected to the other end and the micro-control unit 110 of the measurement end resistance 124.If the resistance value of the non-essential resistance 20 is less than or equal to the default value, then the analog-digital converter 136 notifies the resistance value of the micro-control unit 110 non-essential resistance 20 to be less than or equal to the default value so that the micro-control unit 110 controls the optical flare Tip element 112 glisteningly to light.
Fig. 3 is refer to, for the 3rd embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.Component narration shown in Fig. 3 is similar to Fig. 1~Fig. 2, is succinct factor, is repeated no more in this.Furthermore it should also include an auditory tone cues unit 116 with the watt-hour meter device 10 of optical flare function；The auditory tone cues unit 116 is connected to the micro-control unit 110.If the resistance value of the non-essential resistance 20 is less than or equal to the default value, the micro-control unit 110 controls the optical flare Tip element 112 glisteningly to light, and the micro-control unit 110 controls the auditory tone cues unit 116 to send sound simultaneously.In other words, if the resistance value of the non-essential resistance 20 is less than or equal to the default value, then the comparator 126 notifies the resistance value of the micro-control unit 110 non-essential resistance 20 to be less than or equal to the default value, so that the micro-control unit 110 controls the optical flare Tip element 112 glisteningly to light, and the micro-control unit 110 controls the auditory tone cues unit 116 to send sound simultaneously.The auditory tone cues unit 116 is a buzzer.
Fig. 4 is refer to, for the fourth embodiment block diagram of the dress of the ammeter with optical flare function of the present invention.Component narration shown in Fig. 4 is similar to Fig. 1~Fig. 3, is succinct factor, is repeated no more in this.If the resistance value of the non-essential resistance 20 is less than or equal to the default value, then the analog-digital converter 136 notifies the resistance value of the micro-control unit 110 non-essential resistance 20 to be less than or equal to the default value, so that the micro-control unit 110 controls the optical flare Tip element 112 glisteningly to light, and the micro-control unit 110 controls the auditory tone cues unit 116 to send sound simultaneously.
Fig. 5 is refer to, for the 5th embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.Component narration shown in Fig. 5 is similar to Fig. 1~Fig. 4, is succinct factor, is repeated no more in this.Furthermore it should also include a backlight module 118 with the watt-hour meter device 10 of optical flare function, the backlight module 118 is connected to the micro-control unit 110.If the resistance value of the non-essential resistance 20 is less than or equal to the default value, the micro-control unit 110 controls the backlight module 118 glisteningly to light, and the micro-control unit 110 controls the auditory tone cues unit 116 to send sound simultaneously.In other words, if the resistance value of the non-essential resistance 20 is less than or equal to the default value, then the comparator 126 notifies the resistance value of the micro-control unit 110 non-essential resistance 20 to be less than or equal to the default value, so that the micro-control unit 110 controls the backlight module 118 glisteningly to light, and the micro-control unit 110 controls the auditory tone cues unit 116 to send sound simultaneously.
Fig. 6 is refer to, for the sixth embodiment block diagram of the watt-hour meter device with optical flare function of the present invention.Component narration shown in Fig. 6 is similar to Fig. 1~Fig. 5, is succinct factor, is repeated no more in this.If the resistance value of the non-essential resistance 20 is less than or equal to the default value, then the analog-digital converter 136 notifies the resistance value of the micro-control unit 110 non-essential resistance 20 to be less than or equal to the default value, so that the micro-control unit 110 controls the backlight module 118 glisteningly to light, and the micro-control unit 110 controls the auditory tone cues unit 116 to send sound simultaneously.
The advantage of the invention is that when short circuit is measured then by ammeter, the backlight module or light emitting diode of ammeter can be flashed to remind user.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection scope of the present invention not limited to this.The equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, within protection scope of the present invention.Protection scope of the present invention is defined by claims.
Claims (10)
1. a kind of watt-hour meter device with optical flare function, applied to a non-essential resistance, it is characterised in that should include with the watt-hour meter device of optical flare function：
One anode probe, one end of the anode probe are connected to one end of the non-essential resistance；
One negative terminal probe, one end of the negative terminal probe are connected to the other end of the non-essential resistance, the other end ground connection of the negative terminal probe；
One resistance measuring circuit, the resistance measuring circuit are connected to the other end of the anode probe；
One voltage supply unit, the voltage supply unit are connected to the resistance measuring circuit；
One micro-control unit, the micro-control unit are connected to the resistance measuring circuit；And
One optical flare Tip element, the optical flare Tip element are connected to the micro-control unit,
The wherein resistance measuring circuit is by the anode probe and the negative terminal probe measurement non-essential resistance to obtain a resistance value of the non-essential resistance；The resistance measuring circuit notifies the resistance value of the micro-control unit non-essential resistance；If the resistance value of the non-essential resistance is less than or equal to a default value, the micro-control unit controls optical flare Tip element glisteningly lights.
2. the watt-hour meter device according to claim 1 with optical flare function, it is characterised in that the micro-control unit also is connected to including a display, the display,
Wherein the optical flare Tip element is a backlight module.
3. the watt-hour meter device according to claim 2 with optical flare function, it is characterised in that wherein the optical flare Tip element is a light emitting diode.
4. a kind of watt-hour meter device with optical flare function, applied to a non-essential resistance, it is characterised in that should include with the watt-hour meter device of optical flare function：
One anode probe, one end of the anode probe are connected to one end of the non-essential resistance；
One negative terminal probe, one end of the negative terminal probe are connected to the other end of the non-essential resistance, the other end ground connection of the negative terminal probe；
One resistance measuring circuit, the resistance measuring circuit are connected to the other end of the anode probe；
One voltage supply unit, the voltage supply unit are connected to the resistance measuring circuit；
One micro-control unit, the micro-control unit are connected to the resistance measuring circuit；
One optical flare Tip element, the optical flare Tip element are connected to the micro-control unit；And
One auditory tone cues unit, the auditory tone cues unit are connected to the micro-control unit,
The wherein resistance measuring circuit is by the anode probe and the negative terminal probe measurement non-essential resistance to obtain a resistance value of the non-essential resistance；The resistance measuring circuit notifies the resistance value of the micro-control unit non-essential resistance；If the resistance value of the non-essential resistance is less than or equal to a default value, the micro-control unit controls optical flare Tip element glisteningly lights, and the micro-control unit controls auditory tone cues unit sends sound simultaneously.
5. the watt-hour meter device according to claim 4 with optical flare function, it is characterised in that the micro-control unit also is connected to including a display, the display,
Wherein the optical flare Tip element is a backlight module.
6. the watt-hour meter device according to claim 5 with optical flare function, it is characterised in that wherein the optical flare Tip element is a light emitting diode.
7. the watt-hour meter device according to claim 6 with optical flare function, it is characterised in that wherein the auditory tone cues unit is a buzzer.
8. a kind of watt-hour meter device with optical flare function, it is characterised in that applied to a non-essential resistance, should be included with the watt-hour meter device of optical flare function：
One anode probe, one end of the anode probe are connected to one end of the non-essential resistance；
One negative terminal probe, one end of the negative terminal probe are connected to the other end of the non-essential resistance, the other end ground connection of the negative terminal probe；
One resistance measuring circuit, the resistance measuring circuit are connected to the other end of the anode probe；
One voltage supply unit, the voltage supply unit are connected to the resistance measuring circuit；
One micro-control unit, the micro-control unit are connected to the resistance measuring circuit；
One backlight module, the backlight module are connected to the micro-control unit；And
One auditory tone cues unit, the auditory tone cues unit are connected to the micro-control unit,
The wherein resistance measuring circuit is by the anode probe and the negative terminal probe measurement non-essential resistance to obtain a resistance value of the non-essential resistance；The resistance measuring circuit notifies the resistance value of the micro-control unit non-essential resistance；If the resistance value of the non-essential resistance is less than or equal to a default value, the micro-control unit controls backlight module glisteningly lights, and the micro-control unit controls auditory tone cues unit sends sound simultaneously.
9. the watt-hour meter device according to claim 8 with optical flare function, it is characterised in that be also connected to the micro-control unit including a display, the display.
10. the watt-hour meter device according to claim 9 with optical flare function, it is characterised in that wherein the auditory tone cues unit is a buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610334878.8A CN107402325B (en) | 2016-05-19 | 2016-05-19 | Electric meter device with light flashing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610334878.8A CN107402325B (en) | 2016-05-19 | 2016-05-19 | Electric meter device with light flashing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107402325A true CN107402325A (en) | 2017-11-28 |
| CN107402325B CN107402325B (en) | 2020-01-24 |
Family
ID=60394353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610334878.8A Active CN107402325B (en) | 2016-05-19 | 2016-05-19 | Electric meter device with light flashing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107402325B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2331973Y (en) * | 1998-07-15 | 1999-08-04 | 陈泰源 | Device for protecting three-use watt-hour meter burnout when mistake detection |
| CN1366186A (en) * | 2001-12-31 | 2002-08-28 | 技嘉科技股份有限公司 | Open circuit/short circuit detector and its detection method |
| TWM263665U (en) * | 2004-07-28 | 2005-05-01 | Midway Electronics Co Ltd | Plug having electric power and electrical energy display device |
| CN102957129A (en) * | 2011-08-18 | 2013-03-06 | 上海晨兴希姆通电子科技有限公司 | Over-temperature protection terminal for control of hardware |
| CN103119454A (en) * | 2010-09-21 | 2013-05-22 | 英特尔公司 | Inferencing energy usage from voltage droop |
| CN103197112A (en) * | 2013-03-19 | 2013-07-10 | 优利德科技(中国)有限公司 | Intelligent digital type multimeter |
| CN103675578A (en) * | 2012-09-19 | 2014-03-26 | 天津市前瞻科技有限公司 | Multifunctional portable circuit check instrument |
| CN203519757U (en) * | 2013-09-26 | 2014-04-02 | 上海斐讯数据通信技术有限公司 | Wire rod tester |
| CN104515902A (en) * | 2013-09-29 | 2015-04-15 | 承永资讯科技股份有限公司 | Universal meter with high-voltage warning function |
| CN204422623U (en) * | 2015-02-13 | 2015-06-24 | 汪浩 | With the multimeter of alternating current measuring ability |
| CN104865431A (en) * | 2015-05-08 | 2015-08-26 | 国网山西省电力公司电力科学研究院 | Universal meter measuring gear warning system |
| CN204789705U (en) * | 2015-07-23 | 2015-11-18 | 高超 | Digital universal meter |
| TWM517823U (en) * | 2015-09-10 | 2016-02-21 | 承永資訊科技股份有限公司 | Multifunctional pointer-meter with high voltage alarm and protection |
-
2016
- 2016-05-19 CN CN201610334878.8A patent/CN107402325B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2331973Y (en) * | 1998-07-15 | 1999-08-04 | 陈泰源 | Device for protecting three-use watt-hour meter burnout when mistake detection |
| CN1366186A (en) * | 2001-12-31 | 2002-08-28 | 技嘉科技股份有限公司 | Open circuit/short circuit detector and its detection method |
| TWM263665U (en) * | 2004-07-28 | 2005-05-01 | Midway Electronics Co Ltd | Plug having electric power and electrical energy display device |
| CN103119454A (en) * | 2010-09-21 | 2013-05-22 | 英特尔公司 | Inferencing energy usage from voltage droop |
| CN102957129A (en) * | 2011-08-18 | 2013-03-06 | 上海晨兴希姆通电子科技有限公司 | Over-temperature protection terminal for control of hardware |
| CN103675578A (en) * | 2012-09-19 | 2014-03-26 | 天津市前瞻科技有限公司 | Multifunctional portable circuit check instrument |
| CN103197112A (en) * | 2013-03-19 | 2013-07-10 | 优利德科技(中国)有限公司 | Intelligent digital type multimeter |
| CN203519757U (en) * | 2013-09-26 | 2014-04-02 | 上海斐讯数据通信技术有限公司 | Wire rod tester |
| CN104515902A (en) * | 2013-09-29 | 2015-04-15 | 承永资讯科技股份有限公司 | Universal meter with high-voltage warning function |
| CN204422623U (en) * | 2015-02-13 | 2015-06-24 | 汪浩 | With the multimeter of alternating current measuring ability |
| CN104865431A (en) * | 2015-05-08 | 2015-08-26 | 国网山西省电力公司电力科学研究院 | Universal meter measuring gear warning system |
| CN204789705U (en) * | 2015-07-23 | 2015-11-18 | 高超 | Digital universal meter |
| TWM517823U (en) * | 2015-09-10 | 2016-02-21 | 承永資訊科技股份有限公司 | Multifunctional pointer-meter with high voltage alarm and protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107402325B (en) | 2020-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8754636B2 (en) | Clamp meter with multipoint measurement | |
| EP2873979B1 (en) | Active current sensing circuit and measurement device | |
| TWI221045B (en) | Voltage-detecting method and related circuits | |
| JP7245427B2 (en) | Electric circuit cable quality inspection equipment | |
| TWI505530B (en) | Battery capacitance detecting system | |
| CN205786847U (en) | There is the watt-hour meter device of optical flare function | |
| CN110927465B (en) | Direct current resistance measuring circuit and device | |
| US20130163633A1 (en) | Thermocouple welding test apparatus | |
| CN107402325A (en) | Watt-hour meter device with optical flare function | |
| US20130043892A1 (en) | Resistance measurement circuit | |
| CN207380122U (en) | MOSFET hourglass source electrode resistance test circuits | |
| US10008094B2 (en) | Electric meter apparatus with light-blinking function | |
| CN104111398A (en) | Short-circuit detection device | |
| CN109387696B (en) | Electric meter device with light flashing function | |
| US8907679B2 (en) | Meter apparatus having three-phase judgment function | |
| JPS62115376A (en) | Circuit device displaying current consumption or power consumption of electric load | |
| CN202383193U (en) | Hook table capable of carrying out multi-point measurement | |
| TWI772075B (en) | Electric circuit line quality detection device | |
| CN203786239U (en) | Power supply line electrical on-off test device | |
| TWI605257B (en) | Electric meter apparatus with light-blinking function | |
| RU2015136512A (en) | MEASURING HOMOGENEOUS COIL TEMPERATURE BY INCREASING WIRING RESISTANCE | |
| KR20200058802A (en) | System and method for isolating the resistor diagnosis | |
| TWM532569U (en) | Electric meter apparatus with light-blinking function | |
| TWM441118U (en) | Voltage and current meter | |
| CN204154846U (en) | Low-voltage electrical apparatus, cable leakage proving installation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |