CN104215868A - Detection circuit - Google Patents
Detection circuit Download PDFInfo
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- CN104215868A CN104215868A CN201310215148.2A CN201310215148A CN104215868A CN 104215868 A CN104215868 A CN 104215868A CN 201310215148 A CN201310215148 A CN 201310215148A CN 104215868 A CN104215868 A CN 104215868A
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Abstract
An embodiment of the invention discloses a detection circuit comprising a rectifying and filtering module, a voltage reduction module, a control module and an indicating module. The rectifying and filtering module is used for rectifying and filtering alternating-current voltage and outputting direct-current voltage, the voltage reduction module is connected with the rectifying and filtering module and used for receiving the direct-current voltage and subjecting the direct-current voltage to pressure reduction to obtain working voltage of a post-stage circuit, the control module is connected with the voltage reduction module and used for receiving the working voltage to start working and outputting a corresponding control signal according to a detection result of a detection part, and the indicating module is connected with the control module and used for receiving the control signal and indicating the detection result. The detection circuit can learn about on-off conditions of the detection part according to indication of the indicating module by being directly connected with the detection part, and is convenient for detection and high in efficiency.
Description
Technical field
The present invention relates to electronic applications, particularly relate to a kind of testing circuit.
Background technology
Lamp lighting is seen everywhere inside modern society, and the light fixture used in all trades and professions has different purposes.In the structural design of light fixture, the transmission of delivery of electrical energy and control signal mostly selects single core and polycore cable to weld various plug and connection terminal realizes.Wire time one is long easily to be loosened, and loosen for some circuits or the phenomenon of rosin joint, staff can not be easy to find in testing process, pinpoints the problems.In prior art, generally need to utilize multimeter to detect at position one by one, work efficiency is lower.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, provides a kind of testing circuit.Detect position by directly connecting, can learn the break-make situation detecting position according to the instruction of indicating module, easy to detect, efficiency is high at once.
In order to solve the problems of the technologies described above, embodiments provide a kind of testing circuit, comprising:
Rectification filtering module, exports DC voltage for carrying out rectifying and wave-filtering process to alternating voltage;
Voltage reduction module, is connected with described rectification filtering module, for receiving described DC voltage, carries out to described DC voltage the operating voltage that step-down process obtains late-class circuit;
Control module, is connected with described voltage reduction module, starts working for receiving described operating voltage, exports corresponding control signal according to the testing result detecting position;
Indicating module, is connected with described control module, for receiving described control signal, indicates described testing result.
Wherein, described rectification filtering module comprises rectifier bridge, filter capacitor, the first input end of described rectifier bridge and the second input termination alternating voltage, the positive pole of filter capacitor described in the first output termination, the negative pole of filter capacitor described in the second output termination.
Wherein, described voltage reduction module comprises biasing resistor, the first switching tube, voltage stabilizing diode, the collector of described first switching tube connects the common node of described filter capacitor positive pole and described rectifier bridge first output terminal, emitter connects described control module, base stage connects the negative electrode of described voltage stabilizing diode, the anode of described voltage stabilizing diode connects the negative pole of described filter capacitor, filter capacitor positive pole described in described biasing resistor one termination, the common node of the first switching tube base stage and described voltage stabilizing diode negative electrode described in another termination.
Wherein, described control module comprises load cell, first voltage input end of described load cell connects the emitter of described first switching tube, second voltage input end connects the anode of described voltage stabilizing diode, first detects the first end detecting position described in termination, second detects the second end detecting position described in termination, and signal output part connects described indicating module.
Wherein, described indicating module comprises the first current-limiting resistance, second switch pipe, indicator elment, the signal output part of load cell described in described first current-limiting resistance one termination, the base stage of second switch pipe described in another termination, the collector of described second switch pipe connects one end of described indicator elment, emitter connects the second voltage input end of described load cell, the first voltage input end of load cell described in another termination of described indicator elment.
Wherein, described indicating module also comprises the second current-limiting resistance, the collector of second switch pipe described in described second current-limiting resistance one termination, indicator elment described in another termination.
Wherein, described indicator elment is light emitting diode or hummer, and when adopting light emitting diode as described indicator elment, the positive pole of described light emitting diode connects the first voltage input end of described load cell, and negative pole connects described second current-limiting resistance.
Wherein, described load cell is I load series sensor.
Wherein, described first switching tube and second switch pipe are NPN type triode.
Wherein, the model of described first switching tube and second switch pipe is TIP41C.
Implement the embodiment of the present invention, there is following beneficial effect:
By the cooperation of rectification filtering module and voltage reduction module for control module provides suitable operating voltage, control module is direct and detect location contacts, the duty that corresponding control signal controls indicating module is exported according to the break-make situation detecting position, namely the break-make situation detecting position directly can be understood by the instruction of indicating module, detect very convenient, and efficiency is high, circuit cost is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the connection diagram of the first embodiment of testing circuit of the present invention;
Fig. 2 is the circuit diagram of the second embodiment of testing circuit of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope that the present invention detects.
Please refer to Fig. 1, be the connection diagram of the first embodiment of testing circuit of the present invention, in the present embodiment, described circuit comprises: rectification filtering module 1, voltage reduction module 2, control module 3, indicating module 4.
Described rectification filtering module 1 exports DC voltage for carrying out rectifying and wave-filtering process to alternating voltage;
Described voltage reduction module 2 is connected with described rectification filtering module 1, for receiving described DC voltage, carries out to described DC voltage the operating voltage that step-down process obtains late-class circuit;
Described control module 3 is connected with described voltage reduction module 2, starts working for receiving described operating voltage, exports corresponding control signal according to the testing result detecting position;
Described indicating module 4 is connected with described control module 3, for receiving described control signal, indicates described testing result.The mode of instruction can be lighted by light emitting diode energising and indicate, and also can be powered alarm by hummer and carry out indicating etc.
By the cooperation of rectification filtering module and voltage reduction module for control module provides suitable operating voltage, control module is direct and detect location contacts, the duty that corresponding control signal controls indicating module is exported according to the break-make situation detecting position, namely the break-make situation detecting position directly can be understood by the instruction of indicating module, detect very convenient, and efficiency is high, circuit cost is low.
Please refer to Fig. 2, be the circuit diagram of the second embodiment of testing circuit of the present invention, in the present embodiment, described circuit comprises: rectification filtering module, voltage reduction module, control module, indicating module.
Wherein, rectification filtering module, exports DC voltage for carrying out rectifying and wave-filtering process to alternating voltage;
Voltage reduction module, is connected with described rectification filtering module, for receiving described DC voltage, carries out to described DC voltage the operating voltage that step-down process obtains late-class circuit;
Control module, is connected with described voltage reduction module, starts working for receiving described operating voltage, exports corresponding control signal according to the testing result detecting position;
Indicating module, is connected with described control module, for receiving described control signal, indicates described testing result.
Particularly, described rectification filtering module comprises rectifier bridge BD, filter capacitor C, the first input end of described rectifier bridge BD and the second input termination alternating voltage, the positive pole of filter capacitor C described in the first output termination, the negative pole of filter capacitor C described in the second output termination.
Described voltage reduction module comprises biasing resistor R1, the first switching tube Q1, voltage stabilizing diode D1, the collector of described first switching tube Q1 connects the common node of described filter capacitor C positive pole and described rectifier bridge BD first output terminal, emitter connects described control module, base stage connects the negative electrode of described voltage stabilizing diode D1, the anode of described voltage stabilizing diode D2 connects the negative pole of described filter capacitor C, filter capacitor C positive pole described in described biasing resistor R1 mono-termination, the common node of the first switching tube Q base stage described in another termination and described voltage stabilizing diode D1 negative electrode.
Described control module comprises load cell LSE, first voltage input end i.e. the 3rd pin of described load cell LSE connects the emitter of described first switching tube Q1, second voltage input end i.e. the 5th pin connects the anode of described voltage stabilizing diode D1, first test side i.e. the 1st pin connects the first end at described detection position, second test side i.e. the 2nd pin connects second end at described detection position, and signal output part i.e. the 4th pin connects described indicating module.
Described indicating module comprises the first current-limiting resistance R2, second switch pipe Q2, indicator elment, the signal output part of load cell LSE described in described first current-limiting resistance R1 mono-termination, the base stage of second switch pipe Q2 described in another termination, the collector of described second switch pipe Q2 connects one end of described indicator elment, emitter connects second voltage input end of described load cell LSE, first voltage input end of load cell LSE described in another termination of described indicator elment.
Preferably, described indicating module also comprises the second current-limiting resistance R3, the collector of second switch pipe Q2 described in described second current-limiting resistance R3 mono-termination, indicator elment described in another termination.
Preferably, described indicator elment is light emitting diode LED or hummer, in the present embodiment, adopts light emitting diode LED as described indicator elment, the positive pole of described light emitting diode LED connects first voltage input end of described load cell LSE, and negative pole meets described second current-limiting resistance R3.
Described load cell LSE is I load series sensor.
Described first switching tube Q1 and second switch pipe Q2 is NPN type triode.
The model of described first switching tube Q1 and second switch pipe Q2 is TIP41C.Its operation technique is ripe, and stable performance is cheap.
First, alternating voltage, by rectifier bridge rectification and filter capacitor C filtering, obtains DC voltage.Form DC decompression module by biasing resistor R1, the first switching tube Q1, voltage stabilizing diode D1, be the light emitting diode LED of rear class, load cell LSE, second switch pipe Q2 etc. provides suitable operating voltage.1,2 pins of LSE are for being respectively the first test side and the second test side, when 1,2 pin conductings then its 4th pin output high level of LSE, the base stage being second switch pipe Q2 by the first current-limiting resistance R2 is powered, Q2 base stage is made to be high level, Q2 conducting, light emitting diode LED energising is lighted, thus indicating user detection position is conducting state; When 1,2 pins of LSE disconnect then the 4th pin no-output, Q2 disconnects, and LED does not work.Thus indicating user detection position is off state.Various on-off circuit and rosin joint circuit can be detected by this principle of work.Easy to detect, efficiency is high, and circuit cost is low.
It should be noted that, each embodiment in this instructions all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment identical similar part mutually see.For device embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
By the description of above-described embodiment, the present invention has the following advantages:
By the cooperation of rectification filtering module and voltage reduction module for control module provides suitable operating voltage, control module is direct and detect location contacts, the duty that corresponding control signal controls indicating module is exported according to the break-make situation detecting position, namely the break-make situation detecting position directly can be understood by the instruction of indicating module, detect very convenient, and efficiency is high, circuit cost is low.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory is called for short ROM) or random store-memory body (Random Access Memory is called for short RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (10)
1. a testing circuit, is characterized in that, comprising:
Rectification filtering module, exports DC voltage for carrying out rectifying and wave-filtering process to alternating voltage;
Voltage reduction module, is connected with described rectification filtering module, for receiving described DC voltage, carries out to described DC voltage the operating voltage that step-down process obtains late-class circuit;
Control module, is connected with described voltage reduction module, starts working for receiving described operating voltage, exports corresponding control signal according to the testing result detecting position;
Indicating module, is connected with described control module, for receiving described control signal, indicates described testing result.
2. circuit as claimed in claim 1, it is characterized in that, described rectification filtering module comprises rectifier bridge, filter capacitor, the first input end of described rectifier bridge and the second input termination alternating voltage, the positive pole of filter capacitor described in first output termination, the negative pole of filter capacitor described in the second output termination.
3. circuit as claimed in claim 2, it is characterized in that, described voltage reduction module comprises biasing resistor, the first switching tube, voltage stabilizing diode, the collector of described first switching tube connects the common node of described filter capacitor positive pole and described rectifier bridge first output terminal, emitter connects described control module, base stage connects the negative electrode of described voltage stabilizing diode, the anode of described voltage stabilizing diode connects the negative pole of described filter capacitor, filter capacitor positive pole described in described biasing resistor one termination, the common node of the first switching tube base stage and described voltage stabilizing diode negative electrode described in another termination.
4. circuit as claimed in claim 3, it is characterized in that, described control module comprises load cell, first voltage input end of described load cell connects the emitter of described first switching tube, second voltage input end connects the anode of described voltage stabilizing diode, first detects the first end detecting position described in termination, and second detects the second end detecting position described in termination, and signal output part connects described indicating module.
5. circuit as claimed in claim 4, it is characterized in that, described indicating module comprises the first current-limiting resistance, second switch pipe, indicator elment, the signal output part of load cell described in described first current-limiting resistance one termination, the base stage of second switch pipe described in another termination, the collector of described second switch pipe connects one end of described indicator elment, emitter connects the second voltage input end of described load cell, the first voltage input end of load cell described in another termination of described indicator elment.
6. circuit as claimed in claim 5, it is characterized in that, described indicating module also comprises the second current-limiting resistance, the collector of second switch pipe described in described second current-limiting resistance one termination, indicator elment described in another termination.
7. the circuit as described in claim 5 or 6, it is characterized in that, described indicator elment is light emitting diode or hummer, when adopting light emitting diode as described indicator elment, the positive pole of described light emitting diode connects the first voltage input end of described load cell, and negative pole connects described second current-limiting resistance.
8. circuit as claimed in claim 7, it is characterized in that, described load cell is I load series sensor.
9. circuit as claimed in claim 8, it is characterized in that, described first switching tube and second switch pipe are NPN type triode.
10. circuit as claimed in claim 9, it is characterized in that, the model of described first switching tube and second switch pipe is TIP41C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215148.2A CN104215868A (en) | 2013-05-31 | 2013-05-31 | Detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215148.2A CN104215868A (en) | 2013-05-31 | 2013-05-31 | Detection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN104215868A true CN104215868A (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310215148.2A Pending CN104215868A (en) | 2013-05-31 | 2013-05-31 | Detection circuit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2135845Y (en) * | 1992-10-21 | 1993-06-09 | 黄克 | Full switching off and over voltage protective power socket for remote electric appliance |
| JP2000277269A (en) * | 1999-03-26 | 2000-10-06 | Matsushita Electric Works Ltd | Dimming terminal unit of remote supervisory control system |
| CN201153333Y (en) * | 2007-03-29 | 2008-11-19 | 谷家企业有限公司 | Warning light control circuit construction |
| CN201886128U (en) * | 2010-12-17 | 2011-06-29 | 浙江吉利汽车有限公司 | Detector used for automotive window regulator switch |
| CN202196138U (en) * | 2011-09-06 | 2012-04-18 | 北京迪赛奇正科技有限公司 | Open circuit alarming device for static circuit |
-
2013
- 2013-05-31 CN CN201310215148.2A patent/CN104215868A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2135845Y (en) * | 1992-10-21 | 1993-06-09 | 黄克 | Full switching off and over voltage protective power socket for remote electric appliance |
| JP2000277269A (en) * | 1999-03-26 | 2000-10-06 | Matsushita Electric Works Ltd | Dimming terminal unit of remote supervisory control system |
| CN201153333Y (en) * | 2007-03-29 | 2008-11-19 | 谷家企业有限公司 | Warning light control circuit construction |
| CN201886128U (en) * | 2010-12-17 | 2011-06-29 | 浙江吉利汽车有限公司 | Detector used for automotive window regulator switch |
| CN202196138U (en) * | 2011-09-06 | 2012-04-18 | 北京迪赛奇正科技有限公司 | Open circuit alarming device for static circuit |
Non-Patent Citations (2)
| Title |
|---|
| 李雅轩: "《模拟电子技术》", 30 November 2000 * |
| 胡兵: "负载传感器应用两则", 《电子报》 * |
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Application publication date: 20141217 |
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