CN2368040Y - Micro-wave radiation safety monitor - Google Patents
Micro-wave radiation safety monitor Download PDFInfo
- Publication number
- CN2368040Y CN2368040Y CN 99201106 CN99201106U CN2368040Y CN 2368040 Y CN2368040 Y CN 2368040Y CN 99201106 CN99201106 CN 99201106 CN 99201106 U CN99201106 U CN 99201106U CN 2368040 Y CN2368040 Y CN 2368040Y
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- CN
- China
- Prior art keywords
- circuit
- microwave
- output
- microwave radiation
- micro
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- 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
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Abstract
The utility model relates to a micro-wave radiation safety monitor, which comprises a power circuit. An antenna output to receiving micro-wave signals is connected with a resonance circuit. The output of the resonant circuit is connected with the input of an amplification circuit via a matching circuit, a filter circuit and a detection circuit. The output of the amplification circuit is connected with a display circuit via a comparison circuit, wherein, the resonant circuit and a high pass filtering circuit can be a microstrip circuit structure. The utility model has the advantages of convenient operation, low price, small size, reliable performance and high precision; the micro-wave radiation safety monitor is convenient to carry, can sensitivity discover the existence of microwave radiation, enables a user to see the existence of microwave in a visual mode, and takes measures to effectively avoid the microwave radiation to harming human bodies in time.
Description
The utility model relates to a kind of microwave radiation monitoring device, and it can make the user can " see " existence of microwave, thereby avoids the injury of microwave radiation to human body effectively, belongs to a kind of electronic instrument.
Along with the development of mobile communication technology, the transmitting base station of wireless telecommunications constantly increases, and emissive power continues to increase, and the mobile phone user is more and more, and micro-wave oven also becomes the kitchen tools of family indispensability.Meanwhile, microwave more and more causes people's attention to health effects.External at present existing research institution confirms that microwave radiation reaches certain value, can cause human leukocytes minimizing, tired, and can bring out the appearance etc. of cancer, simultaneously for the people that heart heartstart is housed, microwave radiation also may cause the work of artificial or electronic heart pacemaker not normal.Some countries have worked up the microwave radiation safety standard, can be referring to China GB GB8702-88 " electromagnetic radiation protection regulation ".
Microwave radiation is the thing that a kind of invisible, colourless, tasteless human body unsusceptibility arrives, and whether the existence that wonder it needs expensive specialized equipment such as field intensity meter etc. just can measure.The instrument that at present domestic existing detection micro-wave oven leaks comes out, because these instrument volumes are big, costs an arm and a leg, and low precision, and can only be used for the leak detection of micro-wave oven.And existing microwave articles for use generally do not have the self-checking unit of microwave leakage, and therefore general people can't know whether own used product is producing microwave leakage.This long-term doubt has simultaneously also influenced normal, the reasonably use of microwave product.
The purpose of this utility model is to provide a kind of microwave radiation safety monitor at the deficiency of prior art, it is easy to use, be easy to carry, can find the existence of microwave radiation delicately, and can allow the user " see " existence of microwave with visual mode, thereby in time take measures to avoid effectively the injury of microwave radiation, and it is cheap, volume is little, dependable performance, precision height to human body.
The purpose of this utility model is achieved in that a kind of microwave radiation safety monitor, it comprises feed circuit and connects resonant circuit by the antenna output that receives microwave signal, resonant circuit output process match circuit, filtering circuit, detecting circuit connect the input of amplifying circuit, and amplifying circuit output connects display circuit through comparator circuit and forms.
Described amplifying circuit and corresponding comparator circuit can be more than one, and its input end is connected to change-over switch, another termination detecting circuit output terminal of change-over switch, and the output of each comparator circuit can be connected to same display circuit.
Described resonant circuit and high-pass filtering circuit can be realized by microstrip circuit.
Described power circuit can be battery.
The utility model volume is little, the easy-on characteristics, resonant circuit and high-pass filtering circuit all are that the microstrip circuit by computer-aided design (CAD) constitutes, therefore the consistance of signal is better, the reliability height, detecting circuit is by the microwave detector diode, and circuit is fairly simple, and amplifying circuit is made of operational amplifier, comparer is made of operational amplifier, and cost is lower.The utility model also has the power consumptive province, precision height, the characteristics that test speed is fast.
Below in conjunction with accompanying drawing and specific embodiments the utility model is described in further detail.
Fig. 1 is that circuit of the present utility model constitutes block scheme;
Fig. 2 is circuit theory diagrams of the present utility model.
Referring to Fig. 1, the utility model is a kind of microwave radiation safety monitor, it comprises feed circuit and connects resonant circuit by the antenna output of accepting microwave signal, resonant circuit output process match circuit, filtering circuit, detecting circuit connect the input of amplifying circuit, and amplifying circuit output connects display circuit through comparator circuit and forms.In the present embodiment, the utility model can be used as independently pick-up unit, but its power unit adopts cost lower, and the general dry cell that can change easily.Certainly, in technical conceive scope of the present utility model, also can adopt built-in charging circuit or as the power circuit of control, coming provides working power for whole device, the utility model can be arranged in the detected object in addition, for example be made as one with micro-wave oven, during as self-checking unit of micro-wave oven, then can use common power supply with micro-wave oven.
Amplifying circuit of the present utility model in addition and corresponding comparator circuit can be more than one, its input end is connected to change-over switch, another termination detecting circuit output terminal of change-over switch, the output of each comparator circuit can and connect a display circuit, also can use different display circuits separately certainly.Can enlarge the usable range of this device detected object like this, realize the purpose of one-object-many-purposes.In the embodiment as Fig. 2, given amplifying circuit and corresponding comparator circuit are two, have switch to switch between them.And the voltage that is provided with the different radiation frequency values of upper, middle and lower of three groups of corresponding detected objects at the input end of each circuit presets potential regulator.
Referring to Fig. 2, as a specific embodiment of the present utility model, it has provided two-way and has amplified the circuit structure of output, therefore it can be used for detecting the different radiation frequency values of upper, middle and lower of two different objects, for example with general household microwave oven and personal mobile phone as detected object, the switching of two-way is to realize by double throw switch.When the microwave electromagnetic field signal passes through antenna, receive in the monitor to resonance, the match circuit formed by inductance L 1, L2 capacitor C 1, C2, through the Hi-pass filter of forming by L3, L4 and C3 the signal below the 300MHz is filtered, for obtaining the signal that consistance is better, reliability is high, the utility model resonant circuit and high-pass filtering circuit adopt the microstrip circuit of existing computer aided design software design, are this microstrip circuit equivalent schematic diagram shown in the figure.The output of this circuit is delivered to the detecting circuit of being made up of detection tube V1 and C4, L5 and is carried out detection, after passing through C5, R1, R2 low-pass filter circuit then, obtain a low-frequency voltage, the directly proportional relation of the size of voltage and microwave field density, after this voltage amplified by a four-operational amplifier LM324 amplifier wherein, three voltage references are set again, the voltage ratio of its excess-three of process LM324 amplifier, when voltage greater than a certain corresponding actual standard microwave value set in advance voltage after, the level upset of voltage comparator, thereby the light on and off of driven for emitting lights diode.Light emitting diode V3 shows the electric weight of battery.K switch 1 is the instrument power switch, and K2 is the selector switch of different detected objects.V4 is a voltage stabilizing diode, and potentiometer R18, R19, R20, R7, R8, R9 use for the adjusting datum.The microwave frequency that this circuit can detect is 300MHz-3000MHz, the parameter of two frequencies is set by the potentiometer of adjusting amplifying circuit according to user's requirement, in the time of for example will testing the microwave radiation situation of micro-wave oven, then set the normal microwave frequency 2450MHZ that a frequency of operation is a micro-wave oven, and when wanting the microwave radiation situation of testing mobile phone, then setting frequency of operation is operating handset frequency 900MHZ.Simultaneously can be according to the thresholding setting of national electromagnetic protection regulation, corresponding each frequency can be provided with three field intensity values, corresponding respectively normal, the critical and extraordinary state that will represent.Such as detecting frequency is that the power density of 2450MHZ, radiation is 0.02W/m
2The time, it is bright to drive green light V5, and the expression microwave radiation meets the regulation of electromagnetic protection; When receiving microwave radiation to human body when influential, power density reaches 0.4W/m
2, amber light V6 is bright, and the expression microwave radiation reaches the critical value of the regulation of electromagnetic protection; Power density surpasses 2W/m when human body being had harm
2, red light V7 is bright, and the expression microwave radiation surpasses the critical value of the regulation of electromagnetic protection.So just can allow the people " see " that intuitively microwave radiation is to be in which kind of state, reaches the purpose of monitoring.
Claims (4)
1, a kind of microwave radiation safety monitor, it is characterized in that: it comprises power circuit and connects resonant circuit by the antenna output that receives microwave signal, resonant circuit output process match circuit, high-pass filtering circuit, detecting circuit connect the input of amplifying circuit, and amplifying circuit output connects display circuit through comparator circuit and forms.
2, microwave radiation safety monitor according to claim 1, it is characterized in that: described amplifying circuit and corresponding comparator circuit can be more than one, its input end is connected to change-over switch, another termination detecting circuit output terminal of change-over switch, the output of each comparator circuit can be connected to same display circuit.
3, microwave radiation safety monitor according to claim 1 is characterized in that: but described resonant circuit and high-pass filtering circuit microstrip circuit.
4, microwave radiation safety monitor according to claim 1, it is characterized in that: described power circuit can be battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99201106 CN2368040Y (en) | 1999-01-29 | 1999-01-29 | Micro-wave radiation safety monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99201106 CN2368040Y (en) | 1999-01-29 | 1999-01-29 | Micro-wave radiation safety monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2368040Y true CN2368040Y (en) | 2000-03-08 |
Family
ID=33996953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99201106 Expired - Fee Related CN2368040Y (en) | 1999-01-29 | 1999-01-29 | Micro-wave radiation safety monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2368040Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033167A (en) * | 2009-09-30 | 2011-04-27 | 鸿富锦精密工业（深圳）有限公司 | Electromagnetic radiation intensity detection device and method |
| US9176176B2 (en) | 2006-11-16 | 2015-11-03 | Semiconductor Energy Laboratory Co., Ltd. | Radio field intensity measurement device, and radio field intensity detector and game console using the same |
| CN106922045A (en) * | 2017-02-23 | 2017-07-04 | 陶曙 | A kind of microwave leakage can detect circuit and microwave oven safety management-control method |
| CN113853832A (en) * | 2019-05-30 | 2021-12-28 | Bsh家用电器有限公司 | Domestic microwave device with detection means for detecting microwave leakage radiation |
-
1999
- 1999-01-29 CN CN 99201106 patent/CN2368040Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9176176B2 (en) | 2006-11-16 | 2015-11-03 | Semiconductor Energy Laboratory Co., Ltd. | Radio field intensity measurement device, and radio field intensity detector and game console using the same |
| CN102520261B (en) * | 2006-11-16 | 2015-11-25 | 株式会社半导体能源研究所 | Received-signal strength determinator, the received-signal strength detecting device using it and game station |
| US10215788B2 (en) | 2006-11-16 | 2019-02-26 | Semiconductor Energy Laboratory Co., Ltd. | Radio field intensity measurement device, and radio field intensity detector and game console using the same |
| US10634708B2 (en) | 2006-11-16 | 2020-04-28 | Semiconductor Energy Laboratory Co., Ltd. | Radio field intensity measurement device, and radio field intensity detector and game console using the same |
| US11061058B2 (en) | 2006-11-16 | 2021-07-13 | Semiconductor Energy Laboratory Co., Ltd. | Radio field intensity measurement device, and radio field intensity detector and game console using the same |
| US11656258B2 (en) | 2006-11-16 | 2023-05-23 | Semiconductor Energy Laboratory Co., Ltd. | Radio field intensity measurement device, and radio field intensity detector and game console using the same |
| CN102033167A (en) * | 2009-09-30 | 2011-04-27 | 鸿富锦精密工业（深圳）有限公司 | Electromagnetic radiation intensity detection device and method |
| CN102033167B (en) * | 2009-09-30 | 2014-03-26 | 鸿富锦精密工业（深圳）有限公司 | Electromagnetic radiation intensity detection device and method |
| CN106922045A (en) * | 2017-02-23 | 2017-07-04 | 陶曙 | A kind of microwave leakage can detect circuit and microwave oven safety management-control method |
| CN106922045B (en) * | 2017-02-23 | 2020-06-05 | 陶曙 | Microwave energy leakage detection circuit and microwave oven safety control method |
| CN113853832A (en) * | 2019-05-30 | 2021-12-28 | Bsh家用电器有限公司 | Domestic microwave device with detection means for detecting microwave leakage radiation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |