CN103226164A - Low-voltage controllable clamp meter - Google Patents
Low-voltage controllable clamp meter Download PDFInfo
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- CN103226164A CN103226164A CN2013100868274A CN201310086827A CN103226164A CN 103226164 A CN103226164 A CN 103226164A CN 2013100868274 A CN2013100868274 A CN 2013100868274A CN 201310086827 A CN201310086827 A CN 201310086827A CN 103226164 A CN103226164 A CN 103226164A
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- circuit
- jaw
- gauge outfit
- low pressure
- command
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Abstract
The invention discloses a low-voltage controllable clamp meter which comprises a clamp mouth and a meter head, wherein the clamp mouth is an open type normally-open U-shaped clamp mouth; a contact switch-type detection button is arranged on the bottom surface of the U-shaped clamp mouth; and the detection button is connected with a control circuit of the clamp mouth via a delayed circuit so as to control action of the control circuit. According to the detection-display separate clamp meter disclosed by the invention, the clamp mouth is modified from an original electrically-controlled closed type into an open type, and the contact switch-type detection button is arranged at the bottom of the open type clamp mouth. Therefore, when the clamp meter is used, as long as the open mouth of the clamp mouth is aligned to a lead and the clamp mouth is pressed, the contact switch-type detection button can be triggered by the lead, and the control circuit of the clamp mouth can be connected to enable the clamp mouth to work.
Description
Technical field
The present invention relates to a kind of pincerlike meter, the controlled pincers of particularly a kind of low pressure show table.
Background technology
Existing pincerlike meter jaw be the normally closed type jaw partly, and the switching that utilizes electronic control jaw is to realize in use the switching of the jaw turnover with the realization lead.The pattern that this electronic control jaw opens and closes need be utilized opertaing device, so just increases the trouble spot, may cause a pincerlike jaw to open simultaneously when cell voltage is not enough, has brought great inconvenience to use.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, and a kind of turnover that is convenient for measuring lead is provided, measure the controlled pincerlike meter of low pressure simple, convenient and reliable operation.
A kind of low pressure may command pincerlike meter, include jaw and gauge outfit two parts, described jaw is the U-shaped jaw that opened type is often opened, be provided with the test button of a contact switch formula in the bottom surface of U-shaped jaw, described test button links to each other with the control circuit of jaw with the action of control control circuit by delay circuit.
The present invention is by changing original jaw by automatically controlled closure into the jaw of manual contact, when work, open the binding clip power switch earlier, the relay indicating light amount, when jaw inserts the measurement lead, when circuit had electric current to pass through, the Current Transformer Secondary coil of jaw just produced induction current, when with the hand propelled insulating bar, make the floor detection switch of U-shaped jaw touch lead, detector switch is connected and is pressed, and makes the control circuit of jaw move, thereby makes jaw begin to measure action.This hand low pressure may command pincerlike meter, have simple to operate, measure advantage easily, simultaneously electronic control jaw opens and closes and increases opertaing device, equally also increases the trouble spot, when cell voltage is not enough, may cause a pincerlike jaw to open, bring work inconvenience.
The power circuit of jaw links to each other with the control circuit of jaw through delay circuit.
Power circuit links to each other with the control circuit of jaw through delay circuit, so just can be when jaw need send information energized again, thereby can save electric energy, make whole device can adopt battery to power.
Also be connected with the detection pilot lamp on the control circuit of jaw, this detection refers to that lamp is connected between delay circuit and the control circuit.
The detection pilot lamp is set on control circuit, and it is controlled via delay circuit, like this, when test button is pressed, delay circuit is switched on, thereby when control circuit is activated, detects pilot lamp and also and then light, and can play eye-catching reminding effect.
On the power circuit of jaw, be connected with the reference circuit and the comparator circuit of serial connection, on comparator circuit, be connected with and be used to indicate under-voltage under-voltage pilot lamp.
By under-voltage pilot lamp is set on jaw, when jaw is under-voltage, just can in time know by pilot lamp, thus the accuracy that assurance is measured.
On the power circuit of jaw, also be connected with relay indicating light.
The electric power starting of jaw, whether relay indicating light is bright, in running order to show jaw.
Gauge outfit is provided with gauge outfit display lamp backlight, and display lamp backlight is connected on the gauge outfit power circuit by backlight button and delay circuit.
Display lamp backlight is set on gauge outfit, when using night, only needs to start backlight button like this,, just can guarantee of the smooth use of this pincerlike meter at night by delay circuit.
Between the power circuit of gauge outfit part and gauge outfit control circuit, be provided with relay indicating light.
Described jaw control circuit includes current transformer, current acquisition circuit, current/voltage converter, the electric voltage/frequency converter that connects successively, scrambler and modulation transmitter, described delay circuit respectively with the current acquisition circuit, current/voltage converter, electric voltage/frequency converter, scrambler and modulation transmitter link to each other, and described gauge outfit control circuit includes receiver, frequency, amplifier, display driver circuit and the display device that connects successively.
The jaw part of low pressure may command pincerlike meter of the present invention and the control circuit of gauge outfit part, can realize the wireless connections of jaw part and display part, thereby the easy mistake of avoiding wired connection to bring is bumped other energized conductor and is brought Danger Electric shock risk, and human body can be away from measured conductor.Wired separating and measuring is that with the difference of wireless separating and measuring wireless separating and measuring is than wired separating and measuring operation safe, need not current feed and jaw open and close controlling line, avoid because of improper use, the control line mistake is bumped other energized conductors (referring to high pressure) and is produced the survey crew Danger Electric shock risk.
Be connected with test button on the display driver circuit of gauge outfit, when the pressure control test button, display driver circuit is started working.
On the display driver circuit of gauge outfit, also be connected with under-voltage pilot lamp, with the undervoltage condition of indication gauge outfit.
The jaw of pincerlike meter partly adopts the globe joint connector to connect with being connected of insulation rod.
In sum, the following compared to existing technology advantage of the present invention:
Survey of the present invention, the apparent pincerlike meter that separates, by changing jaw into opened type by original automatically controlled closed type, and the test button of contact switch formula is set in uncovered bottom, so in use, only need uncovered aligning lead, push jaw, trigger the test button of this contact by lead this jaw, thereby the control circuit of conducting jaw so that jaw come realization work.The present invention simultaneously also partly adds transmitter and receiver in the jaw part with gauge outfit, make measure portion and display part become present wireless connections by original wired connection, realize surveying apparent wireless separation, the jaw part plays the effect of extending measuring distance with separating of gauge outfit part, and human body can be away from measured conductor.Wired separating and measuring is that with the difference of wireless separating and measuring wireless separating and measuring is than wired separating and measuring operation safe, need not current feed and jaw open and close controlling line, avoid because of improper use, the control line mistake is bumped other energized conductors (referring to high pressure) and is produced the survey crew Danger Electric shock risk.
Description of drawings
Fig. 1 is the jaw part-structure synoptic diagram of the controlled pincerlike meter of low pressure of the present invention.
Fig. 2 is the controlled pincerlike meter jaw of a low pressure of the present invention stereographic map.
Fig. 3 is the table header separation structure synoptic diagram of the controlled pincerlike meter of low pressure of the present invention
Fig. 4 is the circuit diagram of the jaw part of the controlled pincerlike meter of low pressure of the present invention.
Fig. 5 is the circuit diagram of the gauge outfit part of the controlled pincerlike meter of low pressure of the present invention.
Label declaration 1 jaw 2 test button 3 relay indicating lights 4 display lamp 5 under-voltage pilot lamp 6 backlight detect pilot lamp.
Embodiment
Below in conjunction with embodiment the present invention is described in more detail.
Embodiment 1
A kind of low pressure may command pincerlike meter, include jaw and gauge outfit two parts, described jaw is the U-shaped jaw 1 that opened type is often opened, be provided with the test button 2 of a contact switch formula in the bottom surface of U-shaped jaw, described test button links to each other with the control circuit of jaw with the action of control control circuit by delay circuit.Described power circuit links to each other with the control circuit of jaw through delay circuit.Also be connected with on control circuit and detect pilot lamp 6, this detection refers to that lamp is connected between delay circuit and the control circuit.On power circuit, be connected with the reference circuit and the comparator circuit of serial connection, on comparator circuit, be connected with and be used to indicate under-voltage under-voltage pilot lamp 5.On power circuit, also be connected with relay indicating light.Gauge outfit is provided with gauge outfit display lamp 4 backlight, and display lamp backlight is connected on the gauge outfit power circuit by backlight button and delay circuit.Between the power circuit of gauge outfit part and gauge outfit control circuit, be provided with relay indicating light 3.Described jaw control circuit includes current transformer, current acquisition circuit, current/voltage converter, the electric voltage/frequency converter that connects successively, scrambler and modulation transmitter, described delay circuit respectively with the current acquisition circuit, current/voltage converter, electric voltage/frequency converter, scrambler and modulation transmitter link to each other, and described gauge outfit control circuit includes receiver, frequency, amplifier, display driver circuit and the display device that connects successively.Be connected with test button on the display driver circuit of gauge outfit, when the pressure control test button, display driver circuit is started working.On the display driver circuit of gauge outfit, also be connected with under-voltage pilot lamp, with the undervoltage condition of indication gauge outfit.The jaw of pincerlike meter partly adopts the globe joint connector to connect with being connected of insulation rod.
It is same as the prior art that present embodiment is not stated part.
Claims (10)
1. low pressure may command pincerlike meter, include jaw and gauge outfit two parts, it is characterized in that: described jaw is the U-shaped jaw that opened type is often opened, be provided with the test button of a contact switch formula in the bottom surface of U-shaped jaw, described test button links to each other with the control circuit of jaw with the action of control control circuit by delay circuit.
2. low pressure may command pincerlike meter according to claim 1 is characterized in that: the power circuit of jaw links to each other with the control circuit of jaw through delay circuit.
3. low pressure may command pincerlike meter according to claim 2 is characterized in that: also be connected with the detection pilot lamp on the control circuit of jaw, this detection refers to that lamp is connected between delay circuit and the control circuit.
4. low pressure may command pincerlike meter according to claim 3 is characterized in that: be connected with the reference circuit and the comparator circuit of serial connection on the power circuit of jaw, be connected with on comparator circuit and be used to indicate under-voltage under-voltage pilot lamp.
5. low pressure may command pincerlike meter according to claim 4 is characterized in that: gauge outfit is provided with gauge outfit display lamp backlight, and display lamp backlight is connected on the gauge outfit power circuit by backlight button and delay circuit.
6. low pressure may command pincerlike meter according to claim 5 is characterized in that: be provided with relay indicating light between the power circuit of gauge outfit part and gauge outfit control circuit.
7. according to any one described low pressure may command pincerlike meter of claim 1 to 6, it is characterized in that: described jaw control circuit includes the current transformer that connects successively, the current acquisition circuit, current/voltage converter, electric voltage/frequency converter, scrambler and modulation transmitter, described delay circuit respectively with the current acquisition circuit, current/voltage converter, electric voltage/frequency converter, scrambler and modulation transmitter link to each other, and described gauge outfit control circuit includes the receiver that connects successively, frequency, amplifier, display driver circuit and display device.
8. low pressure may command pincerlike meter according to claim 7 is characterized in that: be connected with test button on the display driver circuit of gauge outfit, when the pressure control test button, display driver circuit is started working.
9. low pressure may command pincerlike meter according to claim 8 is characterized in that: also be connected with under-voltage pilot lamp on the display driver circuit of gauge outfit, with the undervoltage condition of indication gauge outfit.
10. low pressure may command pincerlike meter according to claim 9 is characterized in that: the jaw of pincerlike meter partly adopts the globe joint connector to connect with being connected of insulation rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310086827.4A CN103226164B (en) | 2013-03-19 | 2013-03-19 | Low-voltage controllable clamp meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310086827.4A CN103226164B (en) | 2013-03-19 | 2013-03-19 | Low-voltage controllable clamp meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103226164A true CN103226164A (en) | 2013-07-31 |
| CN103226164B CN103226164B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310086827.4A Active CN103226164B (en) | 2013-03-19 | 2013-03-19 | Low-voltage controllable clamp meter |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207323U (en) * | 1987-07-22 | 1988-09-28 | 张国英 | Instrument on line for high-voltage alternating current |
| CN2170527Y (en) * | 1993-10-18 | 1994-06-29 | 南通江海电工仪表厂 | Multifunctional low-voltage distributing line tester |
| CN1215839A (en) * | 1997-10-29 | 1999-05-05 | 弗兰克公司 | Multimeter with current sensor |
| CN2681143Y (en) * | 2004-01-07 | 2005-02-23 | 袁剑敏 | Multifunctional digital current measurement clamp meter |
| US20100207605A1 (en) * | 2009-02-17 | 2010-08-19 | Nec Electronics Corporation | Power supply control apparatus including overcurrent detection circuit |
| CN102141581A (en) * | 2010-12-30 | 2011-08-03 | 优利德科技(中国)有限公司 | Clamp meter |
| CN102279299A (en) * | 2011-06-30 | 2011-12-14 | 保定供电公司 | Special pincer-shaped electric universal meter |
| CN203216970U (en) * | 2013-03-19 | 2013-09-25 | 国家电网公司 | Low-voltage controllable clamp meter |
-
2013
- 2013-03-19 CN CN201310086827.4A patent/CN103226164B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207323U (en) * | 1987-07-22 | 1988-09-28 | 张国英 | Instrument on line for high-voltage alternating current |
| CN2170527Y (en) * | 1993-10-18 | 1994-06-29 | 南通江海电工仪表厂 | Multifunctional low-voltage distributing line tester |
| CN1215839A (en) * | 1997-10-29 | 1999-05-05 | 弗兰克公司 | Multimeter with current sensor |
| CN2681143Y (en) * | 2004-01-07 | 2005-02-23 | 袁剑敏 | Multifunctional digital current measurement clamp meter |
| US20100207605A1 (en) * | 2009-02-17 | 2010-08-19 | Nec Electronics Corporation | Power supply control apparatus including overcurrent detection circuit |
| CN102141581A (en) * | 2010-12-30 | 2011-08-03 | 优利德科技(中国)有限公司 | Clamp meter |
| CN102279299A (en) * | 2011-06-30 | 2011-12-14 | 保定供电公司 | Special pincer-shaped electric universal meter |
| CN203216970U (en) * | 2013-03-19 | 2013-09-25 | 国家电网公司 | Low-voltage controllable clamp meter |
Non-Patent Citations (1)
| Title |
|---|
| 邓琳等: "数字钳形表交流电流测量结果的不确定度评定", 《计量与测试技术》, vol. 38, no. 04, 30 April 2011 (2011-04-30) * |
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| Publication number | Publication date |
|---|---|
| CN103226164B (en) | 2016-01-20 |
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