CN205786871U - A kind of electromagnetic field radiation survey meter - Google Patents
A kind of electromagnetic field radiation survey meter Download PDFInfo
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- CN205786871U CN205786871U CN201620541863.4U CN201620541863U CN205786871U CN 205786871 U CN205786871 U CN 205786871U CN 201620541863 U CN201620541863 U CN 201620541863U CN 205786871 U CN205786871 U CN 205786871U
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- chip microcomputer
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- survey meter
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Abstract
The utility model proposes a kind of electromagnetic field radiation survey meter, including main frame, probe, described main frame includes single-chip microcomputer, described probe is connected with main frame, described probe includes antenna and the detecting circuit module being installed in described antenna chamber, described main frame includes frequency modeling block, the electromagnetic wave signal that described antenna receives is formed voltage signal by after described detecting circuit module detection, after the described voltage signal described in single-chip microcomputer reception carries out analog digital conversion, by searching the radiation value exporting correspondence in the voltage radiation value form of frequency corresponding to described frequency modeling block.Implementing electromagnetic field radiation survey meter of the present utility model and introduce singlechip technology, monolithic function is according to frequency modeling block, the corresponding radiation value of the corresponding frequency of intelligence output.
Description
Technical field
This utility model relates to a kind of survey meter, particularly to a kind of electromagnetic field radiation survey meter.
Background technology
Electromagnet radiation detection series products is broadly divided into two big classes at present: a class is omni-directional wideband electromagnetic radiation detecting instrument, should
Series products is due to omni-directional to be taken into account and broadband demand, and measuring accuracy is the most poor, and this series products leading in the world is surveyed
Examination error is about ± 2dB, merges inapplicable for required precision high field.Another kind of for some radio-frequency radiation survey meter, i.e. measurement
Can carry out in the case of measured signal is for some frequency or arrowband.Its mode realized has two kinds at present: the first is i.e. according to different
Test frequency changes corresponding detection probe, and the method is only capable of being limited to the frequency of instrument institute band probe, it is impossible to according to testing requirement
Sets itself frequency；Another kind is the mixing detection technique in band local oscillation signal source, and the method can arrange tested according to user's request
Frequency, it is not necessary to change probe.But the method needs complicated radio-frequency module, instrument power consumption is big, and in its radio-frequency module
Local oscillator radiofrequency signal also can produce certain radiation.
Utility model content
In order to solve above problem, this utility model one can be convenient for measuring and show intensity of radiation electric field and merit in real time
The electromagnetic field radiation survey meter of rate density.
The technical solution of the utility model is achieved in that
The utility model discloses a kind of electromagnetic field radiation survey meter, including main frame, probe, described main frame includes monolithic
Machine, described probe is connected with main frame, and described probe includes antenna and the detecting circuit being installed in described antenna chamber
Module, described main frame includes frequency modeling block, and the electromagnetic wave signal that described antenna receives is by described detecting circuit module
Voltage signal is formed, after the described voltage signal described in single-chip microcomputer reception carries out analog digital conversion, by searching and institute after detection
The voltage of the frequency that the frequency modeling block stated is corresponding--radiation value form and export the radiation value of correspondence.
Further, display that described main frame also includes all being connected with described single-chip microcomputer, alarm, display lamp,
Switch, power module.
Further, described main frame also include being connected with described single-chip microcomputer for testing time eliminate environmental disturbances shadow
Ring clearing button, press described reset button, described single-chip microcomputer can by measure show value become press the button after record
True radiation value deduct the environmental disturbances value before pressing the button.
Further, described main frame also includes that the maximum being connected with described single-chip microcomputer keeps button, when described
When maximum keeps button to press, the voltage digital amount that front and back is obtained for twice by described single-chip microcomputer compares, output key
Press the value in the radiation maximum moment that period is measured.
Further, what described main frame also included being connected with described single-chip microcomputer be connected for finely tuning calibration output
The calibration module of measured value.
Further, described main frame also includes that be connected with described single-chip microcomputer has voltage and measured value corresponding relation
The memorizer of data, after described single-chip microcomputer receives the instruction of described frequency modeling block, according in described memorizer
Data send the measured value that output is corresponding.
Further, described antenna is horizontal omnidirectional antenna.
Further, described antenna is dipole antenna, and an arm is cylindrical metal cavity, and another arm is cylindrical gold
Detecting circuit module described in placing in belonging to post, described metallic cavity.
Implement a kind of electromagnetic field radiation survey meter of the present utility model, there is following useful technique effect:
1) introducing singlechip technology, monolithic function is according to frequency modeling block, the corresponding radiation value of the corresponding frequency of intelligence output.
The method need not change probe, it is not required that complicated radio-frequency module can realize the switching of different test frequency.Additionally should
Method does not the most require that detection module is operated in square law region, can be by the voltage power curve of matching, accurate outputting measurement value,
Certainty of measurement is the highest, can reach ± 0.3dB within.
2) detecting circuit introduces the detection chip of HDR, has higher dynamic range than diode detection scheme
With more preferable temperature stabilization performance；
3) placing the arm that metallic cavity is dipole antenna of detecting circuit, the program makes detecting circuit export from antenna
Mouth recently, reduces loss；Additionally metallic cavity can shield interference, makes detecting circuit steady operation.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only
It is embodiments more of the present utility model, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the modular structure schematic diagram of electromagnetic field radiation survey meter of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Referring to Fig. 1, embodiment of the present utility model, a kind of electromagnetic field radiation survey meter, including main frame 1, probe 2, master
Machine 1 includes that single-chip microcomputer 11, probe 2 are connected with main frame 1, and probe 2 includes antenna 21 and the detecting circuit being installed in antenna chamber
Module 22, main frame 1 includes frequency modeling block 12, and the electromagnetic wave signal that antenna 21 receives is formed by after detecting circuit module 22 detection
Voltage signal, single-chip microcomputer 11 receives after voltage signal carries out analog digital conversion, by searching the frequency corresponding with modeling block 12 frequently
Voltage--radiation value form and export correspondence radiation value.
Voltage--radiation value list data exists in the memorizer that single-chip microcomputer 11 carries, in memorizer can be single-chip microcomputer 11
The memorizer that portion carries, but if need the when that frequency being the most to add external memory storage.First by voltage-radiation value data
Exist in table form in memorizer by different frequent points, the frequency then determined according to frequency modeling block 12, after tabling look-up, draw essence
True measured value.
I.e., further, main frame 1 includes the data having voltage and measured value corresponding relation being connected with single-chip microcomputer 11
Memorizer, after single-chip microcomputer 11 receives the instruction of frequency modeling block 12, send, according to the data in memorizer, the survey that output is corresponding
Value.
Single-chip microcomputer 11 (Micro controllers) is a kind of IC chip, is to use super large-scale integration
Technology have the central processor CPU of data-handling capacity, random access memory ram, read only memory ROM, multiple I/O mouth and
The functions such as interruption system, timer/counter (may also include that display driver circuit, pulse-width modulation circuit, Multipexer are changed
The circuit such as device, A/D converter) it is integrated on one piece of silicon chip the little and perfect microcomputer system constituted.
The electromagnetic wave that antenna 21 receives, by output voltage signal after detecting circuit module 22 detection, connects through wire and aviation
Head is connected with main frame 1, and main frame 1 analyzes the voltage signal received, the electric field intensity of output corresponding voltage value and power density.
Display 15 that main frame 1 also includes all being connected with single-chip microcomputer 11, alarm 16, display lamp 17, switch 18, power supply mould
Block 19.
Display 15 can be shown as electric field intensity V/m and power density mw/cm simultaneously2Both of which.Pop one's head in by antenna and
Wideband high-sensitivity detecting circuit forms；Antenna of the present utility model is horizontal omnidirectional antenna, without finding maximum in horizontal plane
Value.Without changing the frequency that probe can select according to user, accurately being shown by after single-chip microcomputer 11 automatic look-up table, precision can reach
± 0.3dB, far above broadband product performance.
Main frame 1 also include being connected with single-chip microcomputer 11 for testing time eliminate the clearing button 13 of environmental disturbances impact, press
Lower reset button 13, single-chip microcomputer 11 measured value can be become press the button after before the true radiation value that records deducts and presses the button
Environmental disturbances value.
Main frame 1 also includes that the maximum being connected with single-chip microcomputer 11 keeps button 14, when maximum keeps button 14 to press,
The voltage digital amount that front and back is obtained for twice by single-chip microcomputer 11 compares, when output key presses the radiation maximum that period is measured
The value carved.
Main frame 1 also includes the calibration module of the measured value for finely tuning calibration output being connected being connected with single-chip microcomputer 11
20。
Main frame 1 also includes the memorizer having voltage and the data of measured value corresponding relation being connected with single-chip microcomputer 11, single
After sheet machine 11 receives the instruction of frequency modeling block 12, send, according to the data in memorizer, the measured value that output is corresponding.
Antenna 21 is horizontal omnidirectional antenna.
Antenna 21 is dipole antenna, and an arm is cylindrical metal cavity 32, and another arm is cylindrical metal post 31, metal
Detecting circuit module 22 is placed in cavity 32.
Single-chip microcomputer 11 is analyzed from the voltage signals that receive of probe 2, and table look-up obtain correspondence power density values or
Field intensity value, is then shown by display 15.Single-chip microcomputer 11 can arrange alarm threshold simultaneously, and reaches to report to the police receiving voltage
Control alarm 16 during thresholding to report to the police.Frequently modeling block 12 selects voltage--field intensity and the electricity of corresponding frequency for control single chip computer 11
Pressure--power density form, resets button 13 and is used for eliminating environmental disturbances, and maximum keeps button 14 maximum for real-time tracking
Test value, display lamp 17 is for indicating the unit of display numerical value, and switch 18 is used for controlling instrument switching on and shutting down.Power module 19 is given main
Machine 1 and probe 2 power supply.Calibration module 20 module is used for calibrating, and is mainly used in the case of not changing Single Chip Microcomputer (SCM) program finely tuning school
Quasi-mode block, eliminates the difference between product individuality.
Implement a kind of electromagnetic field radiation survey meter of the present utility model, there is following useful technique effect:
4) introducing singlechip technology, monolithic function is according to frequency modeling block, the corresponding radiation value of the corresponding frequency of intelligence output.
The method need not change probe, it is not required that complicated radio-frequency module can realize the switching of different test frequency.Additionally should
Method does not the most require that detection module is operated in square law region, can be by the voltage power curve of matching, accurate outputting measurement value,
Certainty of measurement is the highest, can reach ± 0.3dB within.
5) detecting circuit introduces the detection chip of HDR, has higher dynamic range than diode detection scheme
With more preferable temperature stabilization performance；
6) placing the arm that metallic cavity is dipole antenna of detecting circuit, the program makes detecting circuit export from antenna
Mouth recently, reduces loss；Additionally metallic cavity can shield interference, makes detecting circuit steady operation.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Within the spirit of utility model and principle, any modification, equivalent substitution and improvement etc. made, should be included in this utility model
Protection domain within.
Claims (8)
1. an electromagnetic field radiation survey meter, including main frame, probe, described main frame includes single-chip microcomputer, described probe and master
Machine is connected, and described probe includes antenna and the detecting circuit module being installed in described antenna chamber, described main frame bag
Include frequency modeling block, it is characterised in that after the electromagnetic wave signal that described antenna receives is by described detecting circuit module detection
Form voltage signal, after the described voltage signal described in single-chip microcomputer reception carries out analog digital conversion, by searching and described frequency
The voltage of the frequency that modeling block is corresponding--radiation value form and export correspondence radiation value.
Electromagnetic field radiation survey meter the most according to claim 1, it is characterised in that described main frame also includes all with described
Single-chip microcomputer be connected display, alarm, display lamp, switch, power module.
Electromagnetic field radiation survey meter the most according to claim 2, it is characterised in that described main frame also includes with described
The clearing button eliminating environmental disturbances impact in time testing that single-chip microcomputer is connected, presses described reset button, described list
Sheet chance measured value is become press the button after the true radiation value that records deduct the environmental disturbances value before pressing the button.
Electromagnetic field radiation survey meter the most according to claim 3, it is characterised in that described main frame also includes with described
The maximum that single-chip microcomputer is connected keeps button, and when described maximum keeps button to press, described single-chip microcomputer is to front and back two
The secondary voltage digital amount obtained compares, and output key presses the value in the radiation maximum moment that period is measured.
5. according to the electromagnetic field radiation survey meter described in any one of Claims 1-4, it is characterised in that described main frame also wraps
Include the calibration module of the measured value for finely tuning calibration output being connected with described single-chip microcomputer.
Electromagnetic field radiation survey meter the most according to claim 5, it is characterised in that described main frame also includes with described
What single-chip microcomputer connected has the memorizer of voltage and the data of measured value corresponding relation, and described single-chip microcomputer receives described frequency
After the instruction of modeling block, send, according to the data in described memorizer, the measured value that output is corresponding.
Electromagnetic field radiation survey meter the most according to claim 1, it is characterised in that described antenna is horizontal omnidirectional sky
Line.
Electromagnetic field radiation survey meter the most according to claim 1, it is characterised in that described antenna is dipole antenna,
One arm is cylindrical metal cavity, and another arm is cylindrical metal post, the detecting circuit described in the interior placement of described metallic cavity
Module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620541863.4U CN205786871U (en) | 2016-06-06 | 2016-06-06 | A kind of electromagnetic field radiation survey meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620541863.4U CN205786871U (en) | 2016-06-06 | 2016-06-06 | A kind of electromagnetic field radiation survey meter |
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| CN205786871U true CN205786871U (en) | 2016-12-07 |
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| CN201620541863.4U Active CN205786871U (en) | 2016-06-06 | 2016-06-06 | A kind of electromagnetic field radiation survey meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459620A (en) * | 2018-12-25 | 2019-03-12 | 电子科技大学 | A kind of device and method based on array antenna real-time detection microwave leakage |
-
2016
- 2016-06-06 CN CN201620541863.4U patent/CN205786871U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459620A (en) * | 2018-12-25 | 2019-03-12 | 电子科技大学 | A kind of device and method based on array antenna real-time detection microwave leakage |
| CN109459620B (en) * | 2018-12-25 | 2021-05-04 | 电子科技大学 | Device and method for detecting microwave leakage in real time based on array antenna |
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