CN201852880U - Voltage detection and alarm module - Google Patents
Voltage detection and alarm module Download PDFInfo
- Publication number
- CN201852880U CN201852880U CN2010205172976U CN201020517297U CN201852880U CN 201852880 U CN201852880 U CN 201852880U CN 2010205172976 U CN2010205172976 U CN 2010205172976U CN 201020517297 U CN201020517297 U CN 201020517297U CN 201852880 U CN201852880 U CN 201852880U
- Authority
- CN
- China
- Prior art keywords
- voltage
- resistance
- alarm module
- voltage limit
- operational amplifier
- 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
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a voltage detection and alarm module, which comprises a voltage input end which is electrically connected with a detection point of a detected circuit board, a ground end which is electrically connected with a ground wire of the detected circuit board, and a positive power supply, and is characterized by also comprising a reference voltage module capable of supplying an upper limit voltage and a lower limit voltage, a window comparison module which compares the input voltage of the voltage input end with the upper limit voltage and the lower limit voltage and sends an alarm signal when the input voltage is higher than the upper limit voltage or lower than the lower limit voltage, and an alarm module which is controlled by the alarm signal to send alarm instructions. When the voltage detection and alarm module is used, the voltage value displayed by a voltmeter does not need to be read by a tester, the allowable range of the detected voltage does not need to be recorded, the comparison between the detected voltage value and the allowable range does not need to be carried out, and the damaged power boards need to be removed only according to the alarm signal. Accordingly, the labor intensity of the testers is greatly reduced, and the detection efficiency and the detection accuracy are improved; and simultaneously, since a detection circuit is free of a voltmeter head for displaying the voltage value, the overall cost is reduced.
Description
Technical field
Whether the utility model relates to voltage check device, relate in particular to a kind ofly can indicate tested voltage fast and exceed standard, and provide the voltage detecting alarm module of warning when tested voltage exceeds standard.
Background technology
There are many power panels to be now, the detection operation of one detection power panel output voltage is arranged after power panel is carried out by pipelining production.Present detection method is: at power panel voltage test points is set, and the below of test point contact thimble, the other end welding lead of thimble causes voltmeter head, and the magnitude of voltage that the visual gauge outfit of test man shows is judged the quality of power panel.
Existing testing tool and detection method activity duration on streamline are long, and it is many to detect power panel quantity, and it is uninteresting to work, and when test pressure is big, cause mistake to be surveyed easily, and this is the technical matters that industry needs to be resolved hurrily.
The utility model content
Whether the utility model is the problems referred to above that will solve prior art, propose a kind ofly can indicate tested voltage fast and exceed standard, and provide the voltage detecting alarm module of warning when tested voltage exceeds standard.
For solving the problems of the technologies described above, the technical scheme that the utility model proposes is a kind of voltage detecting alarm module of design, comprise the voltage input end that is electrically connected with circuit-under-test plate check point, the earth terminal that is electrically connected with circuit-under-test plate ground wire, positive source, it also comprises, the reference voltage module of upper voltage limit and lower voltage limit is provided; The input voltage of voltage input end and upper voltage limit and lower voltage limit are compared, when input voltage is higher than upper voltage limit or is lower than lower voltage limit, send the window comparison module of alerting signal, be subjected to alerting signal control to send the alarm module of the indication of reporting to the police.
Described reference voltage module comprises: be serially connected in first resistance and second resistance between positive source and the earth terminal, the link of first resistance and second resistance is exported described upper voltage limit; Be serially connected in the 3rd resistance and the 4th resistance between positive source and the earth terminal, the link of the 3rd resistance and the 4th resistance is exported described lower voltage limit.
Described window comparison module comprises: first and second operational amplifier and first and second diode, the inverting input of first operational amplifier connects described upper voltage limit, the in-phase input end of second operational amplifier connects described lower voltage limit, the inverting input of the in-phase input end of first operational amplifier and second operational amplifier also connects described voltage input end, the anode of output termination first diode of first operational amplifier, the anode of output termination second diode of second operational amplifier, the negative electrode of first and second diode connect together and export described alerting signal.
Described alarm module comprises triode, and the base stage of triode connects described alerting signal by the 5th resistance, is connected in series light emitting diode and current-limiting resistance between the collector of triode and the described positive source, and the emitter of triode connects earth terminal.
Described first resistance, second resistance, the 3rd resistance and the 4th resistance are adjustable resistance.
Compared with prior art, use test man of the present utility model need not read the magnitude of voltage that voltage table shows, also need not write down the allowed band of tested voltage, the magnitude of voltage and the allowed band that do not need to detect are made comparisons, and only need to reject the damage power panel according to alerting signal.Greatly alleviated test man's labour intensity, improved detection efficiency and detected accuracy rate.Because testing circuit does not have the voltmeter head of display voltage value, reduced whole cost simultaneously.
Description of drawings
Below in conjunction with drawings and Examples the utility model is made detailed explanation, wherein:
Fig. 1 is a functional-block diagram of the present utility model;
Fig. 2 is the circuit diagram of the utility model preferred embodiment.
Embodiment
Referring to Fig. 1, the disclosed voltage detecting alarm module of the utility model comprises the voltage input end that is electrically connected with circuit-under-test plate check point, with the earth terminal that circuit-under-test plate ground wire is electrically connected, positive source.It also comprises: the reference voltage module that upper voltage limit and lower voltage limit are provided; The input voltage of voltage input end and upper voltage limit and lower voltage limit are compared, when input voltage is higher than upper voltage limit or is lower than lower voltage limit, send the window comparison module of alerting signal, be subjected to alerting signal control to send the alarm module of the indication of reporting to the police.
Referring to Fig. 2, in preferred embodiment, described reference voltage module comprises: be serially connected in first resistance R 1 between positive source and the earth terminal and the link of second resistance R, 1 ', the first resistance R 1 and second resistance R 1 ' and export described upper voltage limit; Be serially connected in the 3rd resistance R 2 and the 4th resistance R 2 ' between positive source and the earth terminal, the link of the 3rd resistance R 2 and the 4th resistance R 2 ' is exported described lower voltage limit.Described window comparison module comprises: first, two operational amplifiers and first, two diodes, the inverting input of first operational amplifier A 1 connects described upper voltage limit, the in-phase input end of second operational amplifier A 2 connects described lower voltage limit, the inverting input of the in-phase input end of first operational amplifier and second operational amplifier also connects described voltage input end, the anode of the output termination first diode D1 of first operational amplifier, the anode of the output termination second diode D2 of second operational amplifier, first, the negative electrode of two diodes connects together and exports described alerting signal.Described alarm module comprises triode Q1, and the base stage of triode connects described alerting signal by the 5th resistance R 3, is connected in series light emitting diode and current-limiting resistance R4, the emitter connection earth terminal of triode between the collector of triode and the described positive source.
In other embodiments, for adapting to different power panels, upper voltage limit and lower voltage limit can be adjusted, and described first resistance R 1, second resistance R 1 ', the 3rd resistance R 2 and the 4th resistance R 2 ' are adjustable resistance.
At each check point of power panel (output terminal) thimble is set during use, the other end welding lead of thimble causes voltage input end of the present utility model, and the ground wire of power panel causes earth terminal of the present utility model by the thimble and the lead of correspondence.Referring to Fig. 2, first resistance R 1 and second resistance R 1 ' are formed bleeder circuit, are first operational amplifier A, 1 capping comparative level U1; The 3rd resistance R 2 and the 4th resistance R 2 ' are formed bleeder circuit, are that second operational amplifier A 2 is set lower limit comparative level U2.Input voltage Ui is added to the in-phase input end of A1 and the inverting input of A2 simultaneously.As Ui during greater than upper limit comparative level U1, first operational amplifier A, 1 output high level, otherwise, output low level; As Ui during less than lower limit comparative level U2, second operational amplifier A, 2 output high level, otherwise, output low level; When any one high level output was arranged, light-emitting diodes (LED) all can be lighted, and the test man knows that promptly current tested power panel has problem.
Above embodiment is only for illustrating non-providing constraints.Anyly do not break away from spirit of the present invention and category, and, all should be contained among the application's the claim scope its equivalent modifications of carrying out or change.
Claims (5)
1. a voltage detecting alarm module comprises the voltage input end that is electrically connected with circuit-under-test plate check point, and with the earth terminal that circuit-under-test plate ground wire is electrically connected, positive source is characterized in that also comprising, the reference voltage module of upper voltage limit and lower voltage limit is provided; The input voltage of voltage input end and upper voltage limit and lower voltage limit are compared, when input voltage is higher than upper voltage limit or is lower than lower voltage limit, send the window comparison module of alerting signal, be subjected to alerting signal control to send the alarm module of the indication of reporting to the police.
2. voltage detecting alarm module as claimed in claim 1, it is characterized in that, described reference voltage module comprises: be serially connected in first resistance (R1) between positive source and the earth terminal and second resistance (R1 '), the link of first resistance (R1) and second resistance (R1 ') is exported described upper voltage limit; Be serially connected in the 3rd resistance (R2) between positive source and the earth terminal and the 4th resistance (R2 '), the link of the 3rd resistance (R2) and the 4th resistance (R2 ') is exported described lower voltage limit.
3. voltage detecting alarm module as claimed in claim 2, it is characterized in that, described window comparison module comprises: first, two operational amplifiers and first, two diodes, the inverting input of first operational amplifier (A1) connects described upper voltage limit, the in-phase input end of second operational amplifier (A2) connects described lower voltage limit, the inverting input of the in-phase input end of first operational amplifier and second operational amplifier also connects described voltage input end, the anode of output termination first diode (D1) of first operational amplifier, the anode of output termination second diode (D2) of second operational amplifier, first, the negative electrode of two diodes connects together and exports described alerting signal.
4. voltage detecting alarm module as claimed in claim 3, it is characterized in that, described alarm module comprises triode (Q1), the base stage of triode connects described alerting signal by the 5th resistance (R3), be connected in series light emitting diode and current-limiting resistance (R4) between the collector of triode and the described positive source, the emitter of triode connects earth terminal.
5. voltage detecting alarm module as claimed in claim 4 is characterized in that, and described first resistance (R1), second resistance (R1 '), the 3rd resistance (R2) and the 4th resistance (R2 ') be adjustable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205172976U CN201852880U (en) | 2010-09-03 | 2010-09-03 | Voltage detection and alarm module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205172976U CN201852880U (en) | 2010-09-03 | 2010-09-03 | Voltage detection and alarm module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201852880U true CN201852880U (en) | 2011-06-01 |
Family
ID=44095268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205172976U Expired - Fee Related CN201852880U (en) | 2010-09-03 | 2010-09-03 | Voltage detection and alarm module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201852880U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354160A (en) * | 2011-06-05 | 2012-02-15 | 配天(安徽)电子技术有限公司 | CNC machine tool feedback signal conversion device and CNC machine tool control system |
| CN102854646A (en) * | 2012-09-25 | 2013-01-02 | 深圳市华星光电技术有限公司 | Curing voltage applying device for liquid crystal substrate |
| CN102944730A (en) * | 2012-11-05 | 2013-02-27 | 深圳创维－Rgb电子有限公司 | Automatic detection device for voltage abnormal state |
| CN103488120A (en) * | 2013-10-10 | 2014-01-01 | 昆山纯柏精密五金有限公司 | Signal control method of CNC (Computerized Numerical Control) machine tool |
| US20140087620A1 (en) * | 2012-09-25 | 2014-03-27 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Apparatus for applying curing voltages to liquid crystal substrate |
| CN103954824A (en) * | 2014-05-07 | 2014-07-30 | 嘉兴中润微电子有限公司 | High voltage difference detection circuit |
| CN104407206A (en) * | 2014-12-02 | 2015-03-11 | 佛山市南海北沙制药有限公司 | Stirring pot detection alarm circuit for pharmaceutical production |
| CN105241591A (en) * | 2015-10-30 | 2016-01-13 | 湖北航天技术研究院总体设计所 | Adjustable retardation pressure alarm device |
| CN109738671A (en) * | 2018-12-07 | 2019-05-10 | 武汉航空仪表有限责任公司 | A kind of acceleration transducer self-checking circuit |
| CN113777393A (en) * | 2021-09-23 | 2021-12-10 | 华东光电集成器件研究所 | RS485 interface communication under-amplitude detection circuit |
| CN115575283A (en) * | 2022-09-30 | 2023-01-06 | 南京凤嘉科技有限公司 | Control circuit of SF6 gas density meter |
-
2010
- 2010-09-03 CN CN2010205172976U patent/CN201852880U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354160A (en) * | 2011-06-05 | 2012-02-15 | 配天(安徽)电子技术有限公司 | CNC machine tool feedback signal conversion device and CNC machine tool control system |
| CN102854646B (en) * | 2012-09-25 | 2015-11-25 | 深圳市华星光电技术有限公司 | The solidification voltage bringing device of crystal liquid substrate |
| WO2014047817A1 (en) * | 2012-09-25 | 2014-04-03 | 深圳市华星光电技术有限公司 | Curing voltage applying device for liquid crystal substrate |
| US20140087620A1 (en) * | 2012-09-25 | 2014-03-27 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Apparatus for applying curing voltages to liquid crystal substrate |
| CN102854646A (en) * | 2012-09-25 | 2013-01-02 | 深圳市华星光电技术有限公司 | Curing voltage applying device for liquid crystal substrate |
| US9465241B2 (en) * | 2012-09-25 | 2016-10-11 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Apparatus for applying curing voltages to liquid crystal substrate |
| CN102944730A (en) * | 2012-11-05 | 2013-02-27 | 深圳创维－Rgb电子有限公司 | Automatic detection device for voltage abnormal state |
| CN103488120A (en) * | 2013-10-10 | 2014-01-01 | 昆山纯柏精密五金有限公司 | Signal control method of CNC (Computerized Numerical Control) machine tool |
| CN103954824A (en) * | 2014-05-07 | 2014-07-30 | 嘉兴中润微电子有限公司 | High voltage difference detection circuit |
| CN104407206B (en) * | 2014-12-02 | 2017-03-29 | 佛山市南海北沙制药有限公司 | A kind of pharmaceutical production detects warning circuit with agitated kettle |
| CN104407206A (en) * | 2014-12-02 | 2015-03-11 | 佛山市南海北沙制药有限公司 | Stirring pot detection alarm circuit for pharmaceutical production |
| CN105241591A (en) * | 2015-10-30 | 2016-01-13 | 湖北航天技术研究院总体设计所 | Adjustable retardation pressure alarm device |
| CN109738671A (en) * | 2018-12-07 | 2019-05-10 | 武汉航空仪表有限责任公司 | A kind of acceleration transducer self-checking circuit |
| CN109738671B (en) * | 2018-12-07 | 2021-04-23 | 武汉航空仪表有限责任公司 | Acceleration sensor self-checking circuit |
| CN113777393A (en) * | 2021-09-23 | 2021-12-10 | 华东光电集成器件研究所 | RS485 interface communication under-amplitude detection circuit |
| CN115575283A (en) * | 2022-09-30 | 2023-01-06 | 南京凤嘉科技有限公司 | Control circuit of SF6 gas density meter |
| CN115575283B (en) * | 2022-09-30 | 2024-03-26 | 南京凤嘉科技有限公司 | Control circuit of SF6 gas density meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201852880U (en) | Voltage detection and alarm module | |
| CN202372595U (en) | Insufficient welding detector | |
| CN102053229A (en) | Power detection device | |
| CN205958703U (en) | Detection apparatus for tongue tube | |
| CN104515946A (en) | Load device for detection | |
| CN205483062U (en) | Automobile storage battery fuse box detection device | |
| CN204349330U (en) | Self-check type state indicator | |
| CN103926500A (en) | Method for detecting LED constant current driving circuit performance | |
| CN104122481B (en) | Multifunctional cable detection device | |
| CN203658413U (en) | ICT needle bed | |
| TWI393902B (en) | Test Method and Platform of Semiconductor Grain Point Measuring Machine | |
| CN201331561Y (en) | Test bench for flat cables | |
| CN103175620A (en) | Thermocouple welding detecting device | |
| TWI388864B (en) | Light bar detection method and the detection machine | |
| CN203130575U (en) | Alternating-current fan fault detecting circuit | |
| CN211856855U (en) | Detection apparatus for battery management system gathers pencil | |
| CN210014867U (en) | Thrust test tool | |
| CN101685134A (en) | Mainboard detection alarm circuit | |
| CN205958776U (en) | Pencil leak protection piece detection device | |
| CN206709992U (en) | Thermocouple welding detects box | |
| CN101738564A (en) | Memory slot detector | |
| CN108196184B (en) | XL series boost chip detection device and method | |
| CN212159917U (en) | Simple tool for testing threshold current of photoelectric coupler | |
| CN205958684U (en) | Residual current coil broken wire detection apparatus | |
| CN215728722U (en) | Shell state detection device of super-radiation semiconductor diode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN SKYWORTH DIGITAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SKY-WORTH DIGITAL TECHNOLOGY CO., LTD.;SHENZHEN CITY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518057 Guangdong city of Shenzhen province Nanshan District Gao Xin Road SKYWORTH building A13-16 Patentee after: Shenzhen Skyworth Digital Technology Co., Ltd. Address before: 518057 Guangdong city of Shenzhen province Nanshan District Gao Xin Road SKYWORTH building A13-16 Patentee before: Shenzhen Skyworth Digital Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20170903 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |