CN103698614A - Electromagnetic radiation monitoring device - Google Patents
Electromagnetic radiation monitoring device Download PDFInfo
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- CN103698614A CN103698614A CN201310738970.7A CN201310738970A CN103698614A CN 103698614 A CN103698614 A CN 103698614A CN 201310738970 A CN201310738970 A CN 201310738970A CN 103698614 A CN103698614 A CN 103698614A
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Abstract
The invention relates to an electromagnetic radiation monitoring device, which is characterized by comprising a 9V direct-current power supply, an electromagnetic radiation pickup and signal amplification circuit, an operation amplifier compensation circuit and a level power amplification and display circuit; the electromagnetic radiation pickup and signal amplification circuit consists of an electromagnetic detection coil L1 and a high-resistance operation amplifier IC1, the selected model number of the high-resistance operation amplifier IC1 is TL071; a pin 1 and a pin 5 of the high-resistance operation amplifier IC1 are respectively connected with two ends of a linear potentiometer RP, and a movable arm of the linear potentiometer RP is connected with a grounded end GND of the circuit; the level power amplification and display circuit consists of an NPN-type transistor VT1, 3 light emitting diodes LED1 to LED3, 3 germanium diodes D1 to D3, a resistor R1 and a resistor R2. The electromagnetic radiation monitoring device is made of conventional and cheap elements and devices and can be used as a special detection tool for the electromagnetic radiation.
Description
Technical field
The invention belongs to electromagenetic wave radiation and field of measuring technique, relate to a kind of electromagnetic radiation monitoring device.
Background technology
Fast development along with electronic technology, various wired, wireless electric equipments are constantly universal, artificial electromagnetic radiation of manufacturing is ubiquitous, common source has: 220V alternating current house wiring, daylight lamp, TV, micro-wave oven, electromagnetic stove, household PC, mobile phone, air-conditioning, hair-dryer etc., when these electric equipments are given our a lot of grace, the electromagnetic radiation that they produce also to us, is lived and health is brought a lot of harm.
In multi-frequency electromagnetic wave, high band and compared with the consequence of strong-electromagnetic field effect on human body particularly, unconsciously, to cause people's energy and strength dissolved, easily people from institute suffers from the diseases such as cataract, leukaemia, angiocardiopathy, brain dysfunction and women's Abortion and sterility disease, even can cause the low inferior pathology of human immunity function.According to authoritative statistical figure, show: be often operated in the crowd in electromagnetic radiation environment, the incidence of disease of above-mentioned disease is apparently higher than general population.
Electromagnetic radiation is now ubiquitous, for avoiding or reducing the injury that electromagnetic radiation causes human body, for effectively detecting, evade electromagnetic radiation source, can make an electromagnetic radiation detection device? detect whether entail dangers to people's health of electromagnetic radiation? for making user can evade electromagnetic radiation source, provide foundation, the present invention designs simple and direct, an effective circuit, it uses common and cheap components and parts, as electromagnet radiation detection specific purpose tool, has advantages of easy to make and is easy to promote.In order to reduce the cost of manufacture of device, this circuit is only done electromagnetic radiation qualitative test, and does not do the quantitative test of electromagnetic radiation.
Below describe electromagnetic radiation monitoring device of the present invention related relevant technologies content in manufacturing process in detail.
Summary of the invention
Goal of the invention and beneficial effect: electromagnetic radiation is now ubiquitous, for avoiding or reducing the injury that electromagnetic radiation causes human body, for effectively detecting, evade electromagnetic radiation source, can make an electromagnetic radiation detection device? detect whether entail dangers to people's health of electromagnetic radiation? for making user can evade electromagnetic radiation source, provide foundation, the present invention designs simple and direct, an effective circuit, it uses common and cheap components and parts, as electromagnet radiation detection specific purpose tool, has advantages of easy to make and is easy to promote.In order to reduce the cost of manufacture of device, this circuit is only done electromagnetic radiation qualitative test, and does not do the quantitative test of electromagnetic radiation.
Circuit working principle: in order to detect electromagnetic emittance, electromagnetic radiation monitoring device circuit has been used electromagnetic detection coil L1 to pick up electromagnetic radiation energy.The two ends of electromagnetic detection coil L1 are directly in the input stage of high resistance operating amplifier IC1.
High resistance operating amplifier IC1 is a kind of low noise JFET operational amplifier, and its input voltage is extremely low, and input current only has 2nA.The 2nd pin inverting input of high resistance operating amplifier IC1 and the 3rd pin in-phase input end only need the bias current of 7nA.
Electromagnetic detection coil L1 receives the magnetic field energy of tested electronic equipment radiation, and the input end at high resistance operating amplifier IC1 produces potential difference (PD), the 6th pin output high level that makes high resistance operating amplifier IC1, this high level driving N PN transistor npn npn VT1 lights LED 1～LED3.The linear potentiometer RP connecting between the 1st pin of high resistance operating amplifier IC1 and the 5th pin, as the Compensation Regulation of high resistance operating amplifier IC1.LED 1～LED3 increases progressively about 300mV as step by take respectively voltage.Resistance R 2 and germanium diode D1～D3 are respectively LED 1～LED3 and play hypotensive effect, according to the radiation intensity of electromagnetism, are respectively used to control the brightness of LED 1～LED3.
When electromagnetic detection coil L1 approaches while having the magnetic field of electromagnetic radiation, along with the 6th pin output voltage of high resistance operating amplifier IC1 increases gradually, LED 1～LED3 lights successively.From the luminous situation of LED 1～LED3, can substantially judge the intensity of tested place electromagnetic radiation, use very convenient, directly perceived.
Technical characterictic: electromagnetic radiation monitoring device, it comprises that 9V direct supply, electromagnetic radiation are picked up and signal amplification circuit, operational amplifier compensating circuit, level power amplification and display circuit, it is characterized in that:
Electromagnetic radiation is picked up and signal amplification circuit: it is comprised of electromagnetic detection coil L1 and high resistance operating amplifier IC1, the model that high resistance operating amplifier IC1 selects is TL071, the two ends of electromagnetic detection coil L1 connect respectively the 2nd pin and the 3rd pin of high resistance operating amplifier IC1, the anodal VCC of the 7th pin connection circuit of high resistance operating amplifier IC1, the 4th pin connection circuit ground GND of high resistance operating amplifier IC1, the 1st pin and the 5th pin of high resistance operating amplifier IC1 connect operational amplifier compensating circuit, and the 6th pin of high resistance operating amplifier IC1 connects level power and amplifies and display circuit;
Operational amplifier compensating circuit: the 1st pin of high resistance operating amplifier IC1 and the 5th pin connect respectively the two ends of linear potentiometer RP, the lever arm connection circuit ground GND of linear potentiometer RP;
Level power is amplified and display circuit: it is by NPN transistor VT1, 3 LED 1～LED3, 3 germanium diode D1～D3 and resistance R 1, resistance R 2 forms, the model that 3 germanium diode D1～D3 select is 2AP10, the base stage of NPN transistor VT1 connects the 6th pin of high resistance operating amplifier IC1 by resistance R 1, the collector of NPN transistor VT1 connects the negative pole of 3 LED 1～LED3, the positive pole of LED 1 is by the anodal VCC of resistance R 2 connection circuits, the positive pole of LED 2 connects the negative pole of germanium diode D1, the anodal VCC of anodal connection circuit of germanium diode D1, the positive pole of LED 3 connects the negative pole of germanium diode D3, the positive pole of germanium diode D3 connects the negative pole of germanium diode D2, the anodal VCC of anodal connection circuit of germanium diode D2, the emitter connection circuit ground GND of NPN transistor VT1,
The anodal VCC of anodal connection circuit of 9V direct supply, the negative pole of 9V direct supply is connected with circuit ground GND.
Accompanying drawing explanation
Accompanying drawing is embodiment circuit working schematic diagram of electromagnetic radiation monitoring device provided by the invention; Electromagnetic detection coil L1 method for making in accompanying drawing refers to embodiment.
Embodiment
According to electromagnetic radiation monitoring device circuit fundamental diagram shown in the drawings and accompanying drawing explanation, and according to annexation between components and parts in the each several part circuit described in summary of the invention, and the components and parts technical parameter described in embodiment requires and circuit production main points are implemented to realize the present invention, below in conjunction with embodiment, correlation technique of the present invention is further described.
The technical parameter of components and parts and selection requirement
IC1 is high resistance operating amplifier, and the model of selecting is TL071, and it is encapsulated as DIP dual inline type;
VT1 is NPN transistor, and the model of selecting is 2SC9013, requires β >=180;
D1～D3 is germanium diode, and the model of selecting is 2AP10;
LED1～LED3 is light emitting diode, selects the super bright red light emitting diodes of ￠ 5mm;
The resistance of resistance R 1 is 6.8K Ω, and the resistance of resistance R 2 is 220 Ω, and its power is 1/8W;
RP is linear potentiometer, and its resistance is 51K Ω;
Direct supply uses 9V laminated cell, or uses the common manganese-zinc battery of 4 joint 5#.
Circuit production main points and circuit debugging
The making of electromagnetic detection coil L1: use 9V/220V, 1～1.5W Industrial Frequency Transformer, use the elementary of Industrial Frequency Transformer, or select the coil of 12V DC relay; In order to improve the effect of Industrial Frequency Transformer induction alternating magnetic field, strengthen the accuracy that electromagnetic radiation detection device detects, during installation, should remove the fastening housing of metal of Industrial Frequency Transformer, and the shell of this device is cut and can not be used metal material;
Electromagnetic detection coil L1 is placed on from the about 60cm of display monitor central monitoring system screen place, and linear adjustment potentiometer RP just extinguishes LED 1; By electromagnetic detection coil L1, again near the about 40cm of display monitor central monitoring system screen place, LED 1 is just lighted; Then by electromagnetic detection coil L1 gradually near display monitor central monitoring system screen, LED 2, LED 3 are lighted successively, now circuit debugging comes to an end.
Use result shows:
As long as pick-up unit leaves display monitor central monitoring system screen or more than video equipment 20cm, more than leaving electronic alarm clock 6cm, more than leaving bedside lamp power lead 20cm, generally just can not be subject to the injury of electromagnetic radiation;
When electronic equipment has metallic shield and is connected to protection ground wire, can obtain satisfied anti-electromagnetic radiation effect, the external amount of electromagnetic radiation of electronic equipment being shielded by metal cap almost approaches zero.
Claims (1)
1. an electromagnetic radiation monitoring device, it comprises that 9V direct supply, electromagnetic radiation are picked up and signal amplification circuit, operational amplifier compensating circuit, level power amplify and display circuit, it is characterized in that:
Described electromagnetic radiation is picked up and signal amplification circuit is comprised of electromagnetic detection coil L1 and high resistance operating amplifier IC1, the model that high resistance operating amplifier IC1 selects is TL071, the two ends of electromagnetic detection coil L1 connect respectively the 2nd pin and the 3rd pin of high resistance operating amplifier IC1, the anodal VCC of the 7th pin connection circuit of high resistance operating amplifier IC1, the 4th pin connection circuit ground GND of high resistance operating amplifier IC1, the 1st pin and the 5th pin of high resistance operating amplifier IC1 connect operational amplifier compensating circuit, and the 6th pin of high resistance operating amplifier IC1 connects level power and amplifies and display circuit;
In described operational amplifier compensating circuit, the 1st pin of high resistance operating amplifier IC1 and the 5th pin connect respectively the two ends of linear potentiometer RP, the lever arm connection circuit ground GND of linear potentiometer RP;
Described level power amplification and display circuit are by NPN transistor VT1, 3 LED 1～LED3, 3 germanium diode D1～D3 and resistance R 1, resistance R 2 forms, the model that 3 germanium diode D1～D3 select is 2AP10, the base stage of NPN transistor VT1 connects the 6th pin of high resistance operating amplifier IC1 by resistance R 1, the collector of NPN transistor VT1 connects the negative pole of 3 LED 1～LED3, the positive pole of LED 1 is by the anodal VCC of resistance R 2 connection circuits, the positive pole of LED 2 connects the negative pole of germanium diode D1, the anodal VCC of anodal connection circuit of germanium diode D1, the positive pole of LED 3 connects the negative pole of germanium diode D3, the positive pole of germanium diode D3 connects the negative pole of germanium diode D2, the anodal VCC of anodal connection circuit of germanium diode D2, the emitter connection circuit ground GND of NPN transistor VT1,
The anodal VCC of anodal connection circuit of described 9V direct supply, the negative pole of 9V direct supply is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310738970.7A CN103698614A (en) | 2013-12-28 | 2013-12-28 | Electromagnetic radiation monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310738970.7A CN103698614A (en) | 2013-12-28 | 2013-12-28 | Electromagnetic radiation monitoring device |
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| Publication Number | Publication Date |
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| CN103698614A true CN103698614A (en) | 2014-04-02 |
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| CN201310738970.7A Pending CN103698614A (en) | 2013-12-28 | 2013-12-28 | Electromagnetic radiation monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926473A (en) * | 2014-04-29 | 2014-07-16 | 吴圣铎 | Electromagnetic field detection device |
| CN109490643A (en) * | 2018-12-31 | 2019-03-19 | 皖西学院 | Electromagnet radiation detection pen |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2236593A (en) * | 1989-08-25 | 1991-04-10 | Janet Heather Driver | Electromagnetic field detector |
| US20050174100A1 (en) * | 2002-10-17 | 2005-08-11 | Philips Alasdair M. | Detection of electromagnetic pollution |
| CN202421346U (en) * | 2012-02-13 | 2012-09-05 | 张爱萍 | Anti-radiation detection and alarm device |
| CN202693687U (en) * | 2012-07-27 | 2013-01-23 | 沈阳工业大学 | Electromagnetic radiation detection device |
| CN202710669U (en) * | 2012-08-23 | 2013-01-30 | 陈清尧 | Electromagnetic radiation detector for household electrical appliances |
| CN103149456A (en) * | 2013-02-27 | 2013-06-12 | 姜秀坤 | Handheld electromagnetic radiation tester |
| CN203672979U (en) * | 2013-12-28 | 2014-06-25 | 黄宇嵩 | Electromagnetic radiation monitoring device |
-
2013
- 2013-12-28 CN CN201310738970.7A patent/CN103698614A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2236593A (en) * | 1989-08-25 | 1991-04-10 | Janet Heather Driver | Electromagnetic field detector |
| US20050174100A1 (en) * | 2002-10-17 | 2005-08-11 | Philips Alasdair M. | Detection of electromagnetic pollution |
| CN202421346U (en) * | 2012-02-13 | 2012-09-05 | 张爱萍 | Anti-radiation detection and alarm device |
| CN202693687U (en) * | 2012-07-27 | 2013-01-23 | 沈阳工业大学 | Electromagnetic radiation detection device |
| CN202710669U (en) * | 2012-08-23 | 2013-01-30 | 陈清尧 | Electromagnetic radiation detector for household electrical appliances |
| CN103149456A (en) * | 2013-02-27 | 2013-06-12 | 姜秀坤 | Handheld electromagnetic radiation tester |
| CN203672979U (en) * | 2013-12-28 | 2014-06-25 | 黄宇嵩 | Electromagnetic radiation monitoring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926473A (en) * | 2014-04-29 | 2014-07-16 | 吴圣铎 | Electromagnetic field detection device |
| CN109490643A (en) * | 2018-12-31 | 2019-03-19 | 皖西学院 | Electromagnet radiation detection pen |
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Application publication date: 20140402 |