CN106249032A - A kind of alarming in short range of electric power device - Google Patents
A kind of alarming in short range of electric power device Download PDFInfo
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- CN106249032A CN106249032A CN201610849047.4A CN201610849047A CN106249032A CN 106249032 A CN106249032 A CN 106249032A CN 201610849047 A CN201610849047 A CN 201610849047A CN 106249032 A CN106249032 A CN 106249032A
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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Abstract
本发明公开了一种近电报警器，包括外壳体，外壳体上端设有蜂鸣器，外壳体一侧设有感应探头，另一侧设有开关，外壳体前端面设有指示灯，外壳体内部设有控制电路板和电源模块，控制电路板上设有单片机、触发模块、自检模块和报警模块，所述单片机分别连接触发模块、自检模块、报警模块和电源模块，所述触发模块连接感应探头，本发明结构设计新颖，反应灵敏，精确度高，具有异常报警功能，同时还具有自检功能，确保正常工作。
The invention discloses a proximity electric alarm, which comprises an outer casing, a buzzer is arranged on the upper end of the outer casing, an induction probe is arranged on one side of the outer casing, a switch is arranged on the other side, an indicator light is arranged on the front surface of the outer casing, The inside of the body is provided with a control circuit board and a power module, and the control circuit board is provided with a single-chip microcomputer, a trigger module, a self-check module and an alarm module, and the single-chip microcomputer is respectively connected to the trigger module, the self-check module, the alarm module and the power supply module, and the trigger module The module is connected with an induction probe. The invention has novel structural design, sensitive response, high precision, abnormal alarm function, and self-check function to ensure normal operation.
Description
技术领域technical field
本发明涉及报警器技术领域，具体为一种近电报警器。The invention relates to the technical field of alarms, in particular to a near-electric alarm.
背景技术Background technique
近电报警器又称手表近电报警器，近电报警表，验电表，还称验电手表。近电报警器具有时间计数和非接 式感应到电场就产生音响报警的功能。当您佩戴手表式近电报警器而误入带电区和误攀带电杆时，近电报警器能及时发出连续的音响报警信号，提醒作业人员注意危险，防止由于错觉和失误造成的触电伤亡事故。经过电力、铁路、油田、化工、煤矿等部门多年使用，证明具有保证人身安全的作用，产生了良好的经济效应。现有的近电报警器反应不灵敏，检测精度低而且不具备自检功能。The near-electric alarm is also called the near-electric alarm of the watch, the near-electric alarm meter, the electric inspection meter, and also called the electric inspection watch. The proximity alarm has the functions of time counting and non-contact sensing of an electric field to generate an audible alarm. When you wear a watch-type near-electric alarm and stray into a live area or climb a live pole by mistake, the near-electric alarm can send out a continuous sound alarm signal in time to remind the operator to pay attention to the danger and prevent electric shock casualties caused by illusions and mistakes . After many years of use in electric power, railway, oil field, chemical industry, coal mine and other departments, it has been proved that it has the function of ensuring personal safety and has produced good economic effects. The existing near-electrical alarms have insensitive response, low detection accuracy and no self-inspection function.
发明内容Contents of the invention
本发明的目的在于提供一种近电报警器，以解决上述背景技术中提出的问题。The purpose of the present invention is to provide a proximity alarm to solve the problems raised in the above-mentioned background technology.
为实现上述目的，本发明提供如下技术方案：一种近电报警器, 包括外壳体，所述外壳体上端设有蜂鸣器，所述外壳体一侧设有感应探头，另一侧设有开关，所述外壳体前端面设有指示灯，所述外壳体内部设有控制电路板和电源模块，所述控制电路板上设有单片机、触发模块、自检模块和报警模块，所述单片机分别连接触发模块、自检模块、报警模块和电源模块，所述触发模块连接感应探头。In order to achieve the above object, the present invention provides the following technical solutions: a near-electric alarm, including an outer shell, a buzzer is provided on the upper end of the outer shell, an induction probe is provided on one side of the outer shell, and an induction probe is provided on the other side switch, an indicator light is provided on the front surface of the outer casing, a control circuit board and a power supply module are arranged inside the outer casing, a single-chip microcomputer, a trigger module, a self-check module and an alarm module are arranged on the control circuit board, and the single-chip microcomputer The trigger module, the self-check module, the alarm module and the power module are respectively connected, and the trigger module is connected with the induction probe.
优选的，所述触发模块包括第一触发器、第二触发器、三极管A，所述第一触发器D端连接电阻C一端，所述电阻C另一端连接开关并接地，所述第一触发器CK端分别连接电阻D一端和电容A一端，所述电容A另一端分别连接三极管A发射极和接地端，所述电阻D另一端连接三极管A集电极，所述三极管A基极分别连接电阻A一端、电阻B一端，电阻B另一端接地，电阻A另一端连接单片机，所述第一触发器S端接地，R端连接第二触发器CK端，所述第一触发器Q端连接电阻E一端，电阻E另一端连接电容B一端，电容B另一端接地，所述第一触发器Q-端悬空，所述第二触发器D端连接Q-端，所述第二触发器S端、R端均接地，所述第二触发器Q端连接电阻F一端。Preferably, the trigger module includes a first trigger, a second trigger, and a transistor A. The D terminal of the first trigger is connected to one end of a resistor C, and the other end of the resistor C is connected to a switch and grounded. The first trigger The CK end of the resistor D is connected to one end of the resistor D and one end of the capacitor A, the other end of the capacitor A is connected to the emitter of the transistor A and the grounding end, the other end of the resistor D is connected to the collector of the transistor A, and the base of the transistor A is connected to the resistor One end of A, one end of resistor B, the other end of resistor B is grounded, the other end of resistor A is connected to the microcontroller, the S end of the first trigger is connected to ground, the R end is connected to the CK end of the second trigger, and the Q end of the first trigger is connected to the resistor One terminal of E, the other terminal of resistor E is connected to one terminal of capacitor B, the other terminal of capacitor B is grounded, the Q-terminal of the first flip-flop is suspended, the D-terminal of the second flip-flop is connected to the Q-terminal, and the S-terminal of the second flip-flop Both terminals R and R are grounded, and the terminal Q of the second flip-flop is connected to one terminal of the resistor F.
优选的，所述报警模块包括三极管B和发光二极管，所述三极管B发射极接地，基极连接电阻H一端，电阻H另一端连接单片机，所述三极管B集电极分别连接电阻G一端和蜂鸣器一端，电阻G另一端连接发光二极管负极，所述发光二极管正极连接蜂鸣器另一端。Preferably, the alarm module includes a triode B and a light-emitting diode, the emitter of the triode B is grounded, the base is connected to one end of the resistor H, the other end of the resistor H is connected to a single-chip microcomputer, and the collector of the triode B is respectively connected to one end of the resistor G and the buzzer One end of the resistor G, the other end of the resistor G is connected to the cathode of the LED, and the anode of the LED is connected to the other end of the buzzer.
优选的，所述自检模块包括继电器和互感器，所述继电器第一端和第二端为常闭点且均接地，所述继电器第一端连接互感器一端，所述互感器另一端连接电阻I一端，电阻I另一端分别连接电阻J一端、二极管A负极、二极管B正极、电容C一端以及电阻K一端，所述电阻J另一端分别连接二极管A正极、二极管B负极、电容C另一端、电阻L一端并接地，所述电阻K另一端连接二极管C正极，二极管C负极连接电阻L另一端。Preferably, the self-inspection module includes a relay and a transformer, the first end and the second end of the relay are normally closed points and both are grounded, the first end of the relay is connected to one end of the transformer, and the other end of the transformer is connected to One end of the resistor I and the other end of the resistor I are respectively connected to one end of the resistor J, the negative pole of the diode A, the positive pole of the diode B, one end of the capacitor C and one end of the resistor K, and the other end of the resistor J is respectively connected to the positive pole of the diode A, the negative pole of the diode B, and the other end of the capacitor C 1. One end of the resistor L is grounded, the other end of the resistor K is connected to the anode of the diode C, and the cathode of the diode C is connected to the other end of the resistor L.
与现有技术相比，本发明的有益效果是：本发明结构设计新颖，采用的触发模块反应灵敏，精确度高，产品精准度高于同类产品30%以上，具有异常报警功能；同时还具有自检功能，利用单片机来检测电路是否完好，可采用声音和灯光来判断电路是否正常，确保正常工作。Compared with the prior art, the beneficial effects of the present invention are: the structural design of the present invention is novel, the trigger module adopted is sensitive, the precision is high, the product precision is 30% higher than that of similar products, and it has an abnormal alarm function; Self-inspection function, using single-chip microcomputer to detect whether the circuit is intact, can use sound and light to judge whether the circuit is normal, to ensure normal operation.
附图说明Description of drawings
图1为本发明结构示意图；Fig. 1 is a structural representation of the present invention;
图2为本发明的控制原理框图；Fig. 2 is a control principle block diagram of the present invention;
图3为本发明的触发模块原理图；Fig. 3 is a schematic diagram of the trigger module of the present invention;
图4为本发明的报警模块原理图；Fig. 4 is a schematic diagram of the alarm module of the present invention;
图5为本发明的自检模块原理图；Fig. 5 is a schematic diagram of the self-test module of the present invention;
图中：1、外壳体；2、蜂鸣器；3、感应探头；4、开关；5、指示灯；6、控制电路板；7、电源模块；8、单片机；9、触发模块；10、自检模块；11、报警模块；12、第一触发器；13、第二触发器；14、发光二极管；15、继电器；16、互感器；151、第一端；152、第二端；153、第三端；1a、电阻A；2a、电阻B；3a、电阻C；4a、电阻D；5a、电阻E；6a、电阻F；7a、电阻G；8a、电阻H；9a、电阻I；10a、电阻J；11a、电阻K；12a、电阻L；1b、三极管A；2b、三极管B；1c、电容A；2c、电容B；3c、电容C；1d、二极管A；2d、二极管B；3d、二极管C。In the figure: 1. Outer shell; 2. Buzzer; 3. Induction probe; 4. Switch; 5. Indicator light; 6. Control circuit board; 7. Power module; 8. Single chip microcomputer; 9. Trigger module; 10. Self-inspection module; 11, alarm module; 12, first trigger; 13, second trigger; 14, light-emitting diode; 15, relay; 16, transformer; 151, first end; 152, second end; 153 , the third terminal; 1a, resistance A; 2a, resistance B; 3a, resistance C; 4a, resistance D; 5a, resistance E; 6a, resistance F; 7a, resistance G; 8a, resistance H; 9a, resistance I; 10a, resistor J; 11a, resistor K; 12a, resistor L; 1b, transistor A; 2b, transistor B; 1c, capacitor A; 2c, capacitor B; 3c, capacitor C; 1d, diode A; 2d, diode B; 3d. Diode C.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
请参阅图1-5，本发明提供一种技术方案：一种近电报警器, 包括外壳体1，外壳体1上端设有蜂鸣器2，外壳体1一侧设有感应探头3，另一侧设有开关4，外壳体1前端面设有指示灯5，外壳体1内部设有控制电路板6和电源模块7，控制电路板6上设有单片机8、触发模块9、自检模块10和报警模块11，单片机8分别连接触发模块9、自检模块10、报警模块11和电源模块7，触发模块9连接感应探头3。Please refer to Figures 1-5, the present invention provides a technical solution: a near-electric alarm, including an outer shell 1, a buzzer 2 is provided on the upper end of the outer shell 1, an induction probe 3 is provided on one side of the outer shell 1, and the other A switch 4 is arranged on one side, an indicator light 5 is arranged on the front surface of the outer casing 1, a control circuit board 6 and a power supply module 7 are arranged inside the outer casing 1, and a single-chip microcomputer 8, a trigger module 9, and a self-test module are arranged on the control circuit board 6 10 and the alarm module 11, the single-chip microcomputer 8 is respectively connected to the trigger module 9, the self-check module 10, the alarm module 11 and the power module 7, and the trigger module 9 is connected to the sensing probe 3.
本实施例中，触发模块9包括第一触发器12、第二触发器13、三极管A 1b，第一触发器12 D端连接电阻C 3a一端，电阻C 3a另一端连接开关4并接地，第一触发器12 CK端分别连接电阻D 4a一端和电容A 1c一端，电容A 1c另一端分别连接三极管A 1b发射极和接地端，电阻D 4a另一端连接三极管A 1b集电极，三极管A 1b基极分别连接电阻A 1a一端、电阻B 2a一端，电阻B 2a另一端接地，电阻A 1a另一端连接单片机8，第一触发器12 S端接地，R端连接第二触发器13 CK端，第一触发器12 Q端连接电阻E 5a一端，电阻E 5a另一端连接电容B 2c一端，电容B 2c另一端接地，第一触发器12 Q-端悬空，第二触发器13 D端连接Q-端，第二触发器13 S端、R端均接地，第二触发器13 Q端连接电阻F 6a一端。In this embodiment, the trigger module 9 includes a first trigger 12, a second trigger 13, and a triode A1b. The D end of the first trigger 12 is connected to one end of a resistor C3a, and the other end of the resistor C3a is connected to a switch 4 and grounded. A flip-flop 12 CK end is connected to one end of resistor D4a and one end of capacitor A1c respectively, the other end of capacitor A1c is respectively connected to the emitter and ground of transistor A1b, the other end of resistor D4a is connected to collector of transistor A1b, and the base of transistor A1b The poles are respectively connected to one end of the resistor A1a and one end of the resistor B2a, the other end of the resistor B2a is grounded, the other end of the resistor A1a is connected to the single-chip microcomputer 8, the S terminal of the first trigger 12 is grounded, and the R terminal is connected to the second trigger 13 CK terminal. The Q terminal of a flip-flop 12 is connected to one end of the resistor E 5a, the other end of the resistor E 5a is connected to one end of the capacitor B 2c, the other end of the capacitor B 2c is grounded, the Q- terminal of the first trigger 12 is suspended, and the D terminal of the second trigger 13 is connected to the Q- Both the S and R terminals of the second trigger 13 are grounded, and the Q terminal of the second trigger 13 is connected to one end of the resistor F6a.
本实施例中，报警模块11包括三极管B 2b和发光二极管14，三极管B2b发射极接地，基极连接电阻H 8a一端，电阻H 8a另一端连接单片机8，三极管B 2b集电极分别连接电阻G 7a一端和蜂鸣器2一端，电阻G 7a另一端连接发光二极管14负极，发光二极管14正极连接蜂鸣器2另一端。In this embodiment, the alarm module 11 includes a triode B2b and a light-emitting diode 14, the emitter of the triode B2b is grounded, the base is connected to one end of the resistor H8a, the other end of the resistor H8a is connected to the microcontroller 8, and the collector of the triode B2b is respectively connected to the resistor G7a One end is connected to one end of the buzzer 2, the other end of the resistor G 7a is connected to the cathode of the light emitting diode 14, and the anode of the light emitting diode 14 is connected to the other end of the buzzer 2.
本实施例中，自检模块10包括继电器15和互感器16，继电器15第一端151和第二端152为常闭点且均接地，继电器15第一端151连接互感器16一端，互感器16另一端连接电阻I9a一端，电阻I 9a另一端分别连接电阻J 10a一端、二极管A 1d负极、二极管B 2d正极、电容C 3c一端以及电阻K 11a一端，电阻J 10a另一端分别连接二极管A 1d正极、二极管B 2d负极、电容C 3c另一端、电阻L 12a一端并接地，电阻K 11a另一端连接二极管C 3d正极，二极管C 3d负极连接电阻L 12a另一端；当二极管C 3d负极端为低电平时，继电器15吸合，第一端151和第三端153接通，第二端152不接通，第一端151此时接通电压信号，经互感器16经电阻I 9a向电阻J 10a分压，最后输出电压信号。In this embodiment, the self-test module 10 includes a relay 15 and a transformer 16, the first end 151 and the second end 152 of the relay 15 are normally closed points and are both grounded, the first end 151 of the relay 15 is connected to one end of the transformer 16, and the transformer The other end of 16 is connected to one end of resistor I9a, the other end of resistor I9a is respectively connected to one end of resistor J 10a, the cathode of diode A 1d, the anode of diode B 2d, one end of capacitor C 3c and one end of resistor K 11a, and the other end of resistor J 10a is respectively connected to diode A 1d The positive pole, the negative pole of diode B 2d, the other end of capacitor C 3c, and one end of resistor L 12a are grounded, the other end of resistor K 11a is connected to the positive pole of diode C 3d, and the negative pole of diode C 3d is connected to the other end of resistor L 12a; when the negative pole of diode C 3d is low level, the relay 15 pulls in, the first terminal 151 and the third terminal 153 are connected, the second terminal 152 is not connected, the first terminal 151 is connected to the voltage signal at this time, and the transformer 16 passes through the resistance I 9a to the resistance J 10a divides the voltage, and finally outputs the voltage signal.
当感应探头接近高压电场时，单片机输入信号端的电压高，输出电路工作，产生相应脉冲信号通过蜂鸣器发出报警声；本发明结构设计新颖，采用的触发模块反应灵敏，精确度高，产品精准度高于同类产品30%以上，具有异常报警功能；同时还具有自检功能，利用单片机来检测电路是否完好，可采用声音和灯光来判断电路是否正常，确保正常工作。When the sensing probe is close to the high-voltage electric field, the voltage of the input signal terminal of the single-chip microcomputer is high, and the output circuit works to generate a corresponding pulse signal and send out an alarm sound through the buzzer; the structure design of the present invention is novel, and the trigger module adopted is sensitive and accurate, and the product is precise The accuracy is 30% higher than that of similar products, and it has an abnormal alarm function; at the same time, it also has a self-check function, which uses a single-chip microcomputer to detect whether the circuit is intact, and can use sound and light to judge whether the circuit is normal to ensure normal operation.
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.
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| CN108196111A (en) * | 2017-08-18 | 2018-06-22 | 广东电网有限责任公司中山供电局 | A kind of circuit electroscopic device of non-contact type |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2486978Y (en) * | 2001-06-11 | 2002-04-17 | 许利凝 | Alarm for nearing electrisity |
| CN201548620U (en) * | 2009-04-03 | 2010-08-11 | 江苏省电力公司苏州供电公司 | Intelligent portable sound and light near electric alarm |
| CN203182109U (en) * | 2013-03-06 | 2013-09-11 | 黄晓川 | Electric shock prevention safety helmet |
| CN203720986U (en) * | 2013-11-04 | 2014-07-16 | 国家电网公司 | Nearby electricity alarm |
| CN203838232U (en) * | 2014-05-09 | 2014-09-17 | 国家电网公司 | High-voltage electroscope circuit capable of self-checking |
| CN204332001U (en) * | 2015-01-06 | 2015-05-13 | 国家电网公司 | The nearly electrical protective device of a kind of high-voltage power supply |
| CN204389576U (en) * | 2015-02-06 | 2015-06-10 | 王岩 | Induction installation and electric system |
| GB2529306A (en) * | 2014-07-08 | 2016-02-17 | Peter Bradley | Electricity detection device |
| CN105629044A (en) * | 2014-11-01 | 2016-06-01 | 江苏绿扬电子仪器集团有限公司 | Near-electricity alarm |
| CN105957302A (en) * | 2016-06-16 | 2016-09-21 | 国家电网公司 | Electricity induction alarm device of safety helmet |
-
2016
- 2016-09-26 CN CN201610849047.4A patent/CN106249032A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2486978Y (en) * | 2001-06-11 | 2002-04-17 | 许利凝 | Alarm for nearing electrisity |
| CN201548620U (en) * | 2009-04-03 | 2010-08-11 | 江苏省电力公司苏州供电公司 | Intelligent portable sound and light near electric alarm |
| CN203182109U (en) * | 2013-03-06 | 2013-09-11 | 黄晓川 | Electric shock prevention safety helmet |
| CN203720986U (en) * | 2013-11-04 | 2014-07-16 | 国家电网公司 | Nearby electricity alarm |
| CN203838232U (en) * | 2014-05-09 | 2014-09-17 | 国家电网公司 | High-voltage electroscope circuit capable of self-checking |
| GB2529306A (en) * | 2014-07-08 | 2016-02-17 | Peter Bradley | Electricity detection device |
| CN105629044A (en) * | 2014-11-01 | 2016-06-01 | 江苏绿扬电子仪器集团有限公司 | Near-electricity alarm |
| CN204332001U (en) * | 2015-01-06 | 2015-05-13 | 国家电网公司 | The nearly electrical protective device of a kind of high-voltage power supply |
| CN204389576U (en) * | 2015-02-06 | 2015-06-10 | 王岩 | Induction installation and electric system |
| CN105957302A (en) * | 2016-06-16 | 2016-09-21 | 国家电网公司 | Electricity induction alarm device of safety helmet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196111A (en) * | 2017-08-18 | 2018-06-22 | 广东电网有限责任公司中山供电局 | A kind of circuit electroscopic device of non-contact type |
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Application publication date: 20161221 |