CN201251597Y - Current indicator - Google Patents
Current indicator Download PDFInfo
- Publication number
- CN201251597Y CN201251597Y CNU2008201453973U CN200820145397U CN201251597Y CN 201251597 Y CN201251597 Y CN 201251597Y CN U2008201453973 U CNU2008201453973 U CN U2008201453973U CN 200820145397 U CN200820145397 U CN 200820145397U CN 201251597 Y CN201251597 Y CN 201251597Y
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- Prior art keywords
- circuit
- current
- emitting diode
- indicator
- shell
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Abstract
The utility model discloses a current indicator, which comprises a casing, a current detecting circuit and an indicator circuit, and further comprises a display driving circuit, wherein the current detecting circuit, the display driving circuit and the indicator circuit are arranged in the casing after electrically connecting in turn, and the indicator circuit is exposed out of the outer surface of the casing, the indicator circuit adopts a light-emitting diode and a liquid crystal display, the output end of the display driving circuit is respectively connected with the light-emitting diode and the liquid crystal display, and the casing is arranged in a control housing in a panel installation mode. The structure is convenient for observing when in use, and the display interface is humanized.
Description
Technical field
The utility model relates to Electron YuanJianJianCeZhuangZhi, particularly a kind of current indicator.
Background technology
In electric field, whether understand electronic loop is very important in operate as normal, yet, circuit is varied, the electronic component that is connected also has nothing in common with each other, what have can determine by its external state, as in being connected with the circuit of light-emitting component, can be directly whether whether light-emitting component luminous comes decision circuitry in running order by observing, but under many circumstances, the duty of circuit can't be judged by Direct observation, particularly in distance is separated by current supply circuit far away, whether having only works according to the electronic component of terminal is judged, unusual trouble, and can't understand its current working state at any time.
Because electric current is the comparatively reliable characterization parameter of of circuit, therefore for duty that can real-time monitoring circuit, people utilize reometer to carry out current detecting, by reometer of serial connection in circuit, according to the reading of reometer as the circuit basis for estimation of operate as normal whether, yet in actual mechanical process, people are general, and whether the understanding circuit that only needs is normal, and do not need the size of current value in the testing circuit, and reometer exists the cost of manufacture height when operation, volume is big, deficiencies such as trouble are installed, and when judging, must at first read the reading of reometer, observe inconvenience, and when reading, must around reometer, be equipped with light source, can't judge intuitively, therefore, in actual applications, seldom use reometer to carry out the detection of electric current.
In order to overcome above defective, someone proposes a kind of structure of current indicator, with reference to shown in Figure 1, it is by shell 10, current transformer 30, filter rectifier 40 and light emitting diode 70 are formed, wherein, current transformer 30, filter rectifier 40 and light emitting diode 70 are electrically connected successively, integral body is placed in the shell 10 then, and the outside of the light emitting diode 70 outer shells 10 that expose outside, during use, this current indicator is serially connected on the power circuit of circuit, when load current passed through the primary coil of current transformer 30, secondary coil induced correspondent voltage, after filter rectifier 40 is handled, be transported to the two ends of light emitting diode 70, luminous for light emitting diode 70, expression circuit this moment is in running order; When circuit breaks down, the electric current instability of flowing through in the circuit, then the voltage that induces of current transformer 30 is less, can not driven for emitting lights diode 70 luminous, therefore the user can determine the duty of current circuit by the luminance of Direct observation light emitting diode 70, uses reometer directly perceived more, convenient.
Yet said structure also has its defective to exist:
(1) with reference to shown in Figure 2, this kind current indicator has bayonet socket in the bottom side of shell 10, during installation bayonet socket is fastened on the guide rail, thereby current indicator is arranged in the control box, adopt the guide rail mounting means, because generally speaking, whether luminous guide rail is installed in control box inside, then observe current indicator when when needs, must open chamber door, just can see the luminous situation of light emitting diode 70 in the current indicator, cause and observe inconvenience;
(2) only utilize light emitting diode to show, can only come the duty of decision circuitry during observation by the light on and off of light emitting diode, not hommization of display mode.
In view of above-mentioned defective, the inventor furthers investigate current indicator, and this case produces thus.
The utility model content
Fundamental purpose of the present utility model is to provide a kind of current indicator, and it is convenient to observe the display interface hommization in use.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of current indicator comprises shell, current detection circuit and indicating circuit; Also comprise display driver circuit; Current detection circuit, display driver circuit and be arranged in the shell after indicating circuit is electrically connected successively, and expose outside the outward surface of shell of indicating circuit; Indicating circuit adopts light emitting diode and LCD, and the output terminal of display driver circuit is connected with LCD with light emitting diode respectively; Shell is arranged in the control box with the panel mounting means.
Above-mentioned current detection circuit adopts current transformer.
Also be connected in series an overload protecting circuit between above-mentioned current detection circuit and the display driver circuit.
After adopting such scheme, the utlity model has following improvement:
(1) the utility model adopts the panel mounting means, and indicating circuit is installed on the panel, then when observing the duty of circuit, just can see the state of indicating circuit in the front of panel, needn't open the cabinet door, strengthens the convenience when observing greatly;
(2) except that adopting the light emitting diode that generally uses as the indicator elment, also use LCD, come the display circuit current working state by word content, display mode is hommization more.
Description of drawings
Fig. 1 is a kind of inner structure synoptic diagram of existing current indicator;
Fig. 2 is a kind of schematic perspective view of existing current indicator;
Fig. 3 is a schematic perspective view of the present utility model;
Fig. 4 is a circuit connection diagram of the present utility model;
Fig. 5 is the circuit working display interface synoptic diagram of LCD just often;
Fig. 6 is the display interface synoptic diagram of circuit working LCD when unusual.
Embodiment
Below in conjunction with specific embodiment the utility model is elaborated.
As shown in Figure 3, be the schematic perspective view of a kind of current indicator of the utility model, comprise shell 1, current detection circuit, display driver circuit 2 and indicating circuit.
Please refer to shown in Figure 4 again, in the present embodiment, current detection circuit adopts current transformer 3, the input end of current transformer 3 is connected with the power circuit of circuit-under-test, load current is by the primary coil of current transformer 3, induce correspondent voltage by secondary coil again, be transported to the input end of display driver circuit 2.
The output terminal of display driver circuit 2 is connected with indicating circuit, drives indicating circuit work, with the duty of indication circuit-under-test; Wherein, indicating circuit comprises light emitting diode 4 and LCD 5, output terminal with display driver circuit 2 links to each other respectively, and light emitting diode 4 is with bright or go out as the Warning Mark of circuit working state, and LCD 5 then gives the observer with prompting by different word contents.
In addition, in order to guarantee the stability of circuit working, present embodiment also is connected in series an overload protecting circuit 6 between current transformer 3 and display driver circuit 2, and with reference to shown in Figure 4, holding circuit is not burnt because of overload.
When the utility model uses, as shown in Figure 4, the flow through primary coil of current transformer 3 of alternating current, induce correspondent voltage by secondary coil, be applied to the two ends of display driver circuit 2 via overload protecting circuit 6, again by display driver circuit 2 driven for emitting lights diodes 4 luminous with LCD 5 display text contents; When circuit working just often, light emitting diode 4 is luminous, simultaneously LCD 5 shows the word content of indication circuit operate as normal, with reference to shown in Figure 5; And when circuit working is unusual, light emitting diode 4 extinguishes, LCD 5 shows word content shown in Figure 6 simultaneously, the observer can be easily luminous situation and LCD 5 shown word contents by light emitting diode 4 duty of coming the current circuit of intuitive judgment, display interface is more humane; In addition, because shell 1 is installed in the control box by the panel mounting means, and the interface of LCD 5 is bigger, therefore need not open the displaying contents that chamber door can be observed LCD 5, very convenient during observation.
In sum, a kind of current indicator of the utility model, focus on increasing LCD 5 as indicating circuit, can pass through the display text content and the duty of indicating circuit, the display interface hommization, and adopt the panel mounting means to be arranged in the control box shell 1, and when observing, needn't open chamber door, it is convenient to observe.Above embodiment only is explanation technological thought of the present utility model; can not limit protection domain of the present utility model with this; every according to the technological thought that the utility model proposes, any change of being done on the technical scheme basis all falls within the utility model protection domain.
Claims (3)
1, a kind of current indicator comprises shell, current detection circuit and indicating circuit, it is characterized in that: also comprise display driver circuit; Current detection circuit, display driver circuit and be arranged in the shell after indicating circuit is electrically connected successively, and expose outside the outward surface of shell of indicating circuit; Indicating circuit adopts light emitting diode and LCD, and the output terminal of display driver circuit is connected with LCD with light emitting diode respectively; Shell is arranged in the control box with the panel mounting means.
2, a kind of current indicator as claimed in claim 1 is characterized in that: described current detection circuit adopts current transformer.
3, a kind of current indicator as claimed in claim 1 is characterized in that: also be connected in series an overload protecting circuit between described current detection circuit and the display driver circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201453973U CN201251597Y (en) | 2008-08-27 | 2008-08-27 | Current indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201453973U CN201251597Y (en) | 2008-08-27 | 2008-08-27 | Current indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251597Y true CN201251597Y (en) | 2009-06-03 |
Family
ID=40747269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201453973U Expired - Fee Related CN201251597Y (en) | 2008-08-27 | 2008-08-27 | Current indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201251597Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004905A (en) * | 2015-07-28 | 2015-10-28 | 苏州宏展信息科技有限公司 | Recording pen current detection device based on radio frequency receiving |
-
2008
- 2008-08-27 CN CNU2008201453973U patent/CN201251597Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004905A (en) * | 2015-07-28 | 2015-10-28 | 苏州宏展信息科技有限公司 | Recording pen current detection device based on radio frequency receiving |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XIAMEN PEAKS ELECTRIC CO., LTD. Free format text: FORMER OWNER: LU JINGHUA Effective date: 20120129 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120129 Address after: 361000, south 4 building, No. 25 Xiang Yue Road, torch hi tech Zone (Xiangan), Xiamen, Fujian Patentee after: Xiamen Peaks Electrical Co., Ltd. Address before: 361000, No. 59, Bei Bei Hou Lin, Huli District, Fujian, Xiamen Patentee before: Lu Jinghua |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20140827 |
|
| EXPY | Termination of patent right or utility model |