CN109298250A - A kind of radio frequency electromagnetic field radiation crosses threshold field strength's alarm system and method - Google Patents
A kind of radio frequency electromagnetic field radiation crosses threshold field strength's alarm system and method Download PDFInfo
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- CN109298250A CN109298250A CN201811434852.6A CN201811434852A CN109298250A CN 109298250 A CN109298250 A CN 109298250A CN 201811434852 A CN201811434852 A CN 201811434852A CN 109298250 A CN109298250 A CN 109298250A
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- potential difference
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/0857—Dosimetry, i.e. measuring the time integral of radiation intensity; Level warning devices for personal safety use
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- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention belongs to electromagnet radiation detection fields, it is related to a kind of radio frequency electromagnetic field radiation and crosses threshold field strength's alarm system and method, the system includes electromagnetic induction coil and electro-magnetic radiation detection modules, electro-magnetic radiation detection modules are accessed at the both ends of the electromagnetic induction coil, the electro-magnetic radiation detection modules include: voltage tester unit, for testing the potential difference at electromagnetic induction coil both ends, voltage amplification unit, for the potential difference detected to be amplified, limit value comparison unit, for the potential difference of amplification to be compared with limit value, alarm unit, for alarming when the potential difference signal of amplification is more than limit value.The present invention can constantly in monitoring server electromagnetic radiation intensity alarm if the voltage of amplification is more than limit value, remind the running environment of maintenance personnel's Inspection and maintenance context and server internal.
Description
Technical field
The invention belongs to electromagnet radiation detection field, be related to a kind of radio frequency electromagnetic field radiation cross threshold field strength's alarm system and
Method.
Background technique
Electromagnetic radiation influences the normal work of most of electronic equipments in the form that space electric field radiates, and interference source can source
It is broadcasted in small handheld wireless set, the fixed radio that such as operation maintenance and security personnel use, the hair of TV station
Penetrate machine, vehicular radio transmitter, mobile communication base station, Medical Devices of various large sizes etc..Common radiation frequency exists
0.8GHz is between 3GHz, this interior frequency range includes simultaneously stray radiation caused by other equipment, such as electric welding machine, perception
Switch operation of load etc..The size of the electric field strength of radiation decides the operation is stable of the ITE equipment in electromagnetic environment
Property.
In National Standard of the People's Republic of China GB/T 17626.3 and International Electrotechnical Commission Standard IEC 61000-4-3
Specific regulation is done to electromagnetic radiation immunity to interference, the requirement of general test class is 80MHz- within the scope of test frequency
1GHz, grade 1 should meet test field strength 1V/m, and grade 2 should meet test field strength 3V/m, and grade 3 should meet test field strength 10V/
m.At the same time, National Standard of the People's Republic of China GB/T 17618 and International Special Committee on Radio Interference standard
Require ITE equipment that should meet the test performance grade that general test class 2 tests field strength 3V/m in CISPR 24.
In order to meet the requirement of electromagnetic radiation immunity to interference, usual ITE equipment uses the shielding design of reinforcing mechanisms shell, passes through
Electromagnetic radiation is shielded using faraday cup principle.The design of mechanism shielding can satisfy the requirement of electromagnetic radiation grade 2, still
Actual electromagnetic radiation environment is complicated, once when external electromagnetic radiation environment is exceeded, i.e., when radiation field intensity is more than 3V/m, if
The standby influence that just will receive in working performance, if electromagnetic radiation energy further enhances, equipment perhaps be can not work normally.
Summary of the invention
The present invention proposes that a kind of radio frequency electromagnetic field radiation crosses threshold field strength's alarm system and method to solve the above-mentioned problems,
Electromagnetic radiation intensity that can constantly in monitoring server is alarmed if being more than limit value, remind maintenance personnel check arround ring
The running environment of border and server internal.
To achieve the goals above, the technical scheme is that
A kind of radio frequency electromagnetic field radiation crosses threshold field strength's alarm system, including electromagnetic induction coil and electromagnet radiation detection mould
Electro-magnetic radiation detection modules are accessed at the both ends of block, the electromagnetic induction coil, and the electro-magnetic radiation detection modules include:
Voltage tester unit, for testing the potential difference at electromagnetic induction coil both ends,
Voltage amplification unit, for the potential difference detected to be amplified,
Limit value comparison unit, for the potential difference of amplification to be compared with limit value,
Alarm unit, for alarming when the potential difference signal of amplification is more than limit value.
Preferably, the electromagnetic induction coil diameter is 50mm, and the number of turns is 200 circles.
Preferably, the electro-magnetic radiation detection modules further include voltage modulated unit, the voltage modulated unit for pair
The potential difference of potential difference test cell test carries out frequency modulation(PFM).
Preferably, the alarm unit is a kind of light emitting device, and user is warned by way of light-emitting flash.
Preferably, the alarm unit is a kind of generating device, and user is warned by way of making a sound.
Preferably, potential difference of the potential difference test cell every 100ms test electromagnetic induction coil both ends.
The present invention also provides a kind of radio frequency electromagnetic field radiations to cross threshold field strength's alarm method, comprising the following steps:
Test platform is built, electromagnetic induction coil is placed in test environment；
Test the potential difference at electromagnetic induction coil both ends；
Potential difference is amplified, is compared with limit value；
If the potential difference of amplification is more than limit value, alarms, otherwise, then continue the electromagnetic radiation intensity of monitoring and test environment.
Preferably, potential difference is amplified described, before comparing with limit value, frequency is carried out to the potential difference of acquisition
Rate modulation.
Preferably, if the potential difference in the amplification is less than limit value, the electromagnetic radiation for continuing monitoring and test environment is strong
Otherwise degree in the step of then alarming, if the potential difference of amplification is less than limit value, continues every 100ms monitoring and test environment
Electromagnetic radiation intensity, the electromagnetic radiation intensity in moment monitoring and test environment.
The invention has the benefit that
Radio frequency electromagnetic field radiation of the invention crosses threshold field strength's alarm system and method, tests electromagnetism sense every 100ms
The potential difference for answering coil both ends carries out frequency modulation(PFM) to potential difference by voltage modulated unit, makes signal convenient for transmission, reduces dry
It disturbs, and is easy to amplify, then voltage is amplified, is compared with limit value, electromagnetic radiation that can constantly in monitoring server
Intensity is alarmed if the voltage of amplification is more than limit value, reminds maintenance personnel's Inspection and maintenance context and server internal
Running environment.The present invention can solve ITE equipment and work under complicated severe electromagnetic environment, once radiation field intensity is more than setting
When value can initiative alarming, the problem of further deteriorating to avoid electromagnetic environment, ITE equipment caused to can not work normally, with increase
Strong ability to work of the server under sophisticated electronic environment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that radio frequency electromagnetic field radiation of the invention crosses threshold field strength's alarm system.
Fig. 2 is the flow diagram that radio frequency electromagnetic field radiation of the invention crosses threshold field strength's alarm method.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this hair
It is bright to be described in detail.According to following embodiments, the present invention may be better understood.However, those skilled in the art is easy
Understand, the following examples are only intended to illustrate the technical solution of the present invention more clearly, and it is of the invention to cannot be used as a limitation limitation
Protection scope.
Fig. 1 is the structural schematic diagram that a kind of radio frequency electromagnetic field radiation crosses threshold field strength's alarm system.As shown in Figure 1, a kind of
Radio frequency electromagnetic field radiation crosses threshold field strength's alarm system, including electromagnetic induction coil and electro-magnetic radiation detection modules, the electromagnetism
Electro-magnetic radiation detection modules are accessed at the both ends of induction coil, and the electro-magnetic radiation detection modules include:
Voltage tester unit, for testing the potential difference at electromagnetic induction coil both ends,
Voltage modulated unit, the potential difference for testing potential difference test cell carry out frequency modulation(PFM)
Voltage amplification unit, for the potential difference detected to be amplified,
Limit value comparison unit, for the potential difference of amplification to be compared with limit value,
Alarm unit, for alarming when the potential difference signal of amplification is more than limit value.
The electromagnetic induction coil diameter is 50mm, and the number of turns is 200 circles.The both ends of the electromagnetic induction coil connect electricity
Test cell is pressed, for testing the potential difference at electromagnetic induction coil both ends.
The alarm unit is a kind of light emitting device, and user is warned by way of light-emitting flash.
The alarm unit is a kind of generating device, and user is warned by way of making a sound.
Potential difference of the potential difference test cell every 100ms test electromagnetic induction coil both ends.
Fig. 2 is the flow diagram that a kind of radio frequency electromagnetic field radiation crosses threshold field strength's alarm method, as shown in Fig. 2, a kind of
Radio frequency electromagnetic field radiation crosses threshold field strength's alarm method, comprising the following steps:
Test platform is built, electromagnetic induction coil is placed in test environment；
Test the potential difference at electromagnetic induction coil both ends；
Potential difference is amplified, is compared with limit value；
If the potential difference of amplification is more than limit value, alarms, otherwise, then continue the electromagnetic radiation intensity of monitoring and test environment.
In the step of potential difference at the test electromagnetic induction coil both ends, voltage tester unit tests electricity every 100ms
The potential difference at magnetic induction coil both ends.
Potential difference is amplified described, before comparing with limit value, frequency modulation(PFM) is carried out to the potential difference of acquisition.
If being less than limit value in the potential difference of the amplification, continue the electromagnetic radiation intensity of monitoring and test environment, otherwise,
In the step of then alarming, if the potential difference of amplification is less than limit value, continue the electromagnetic radiation every 100ms monitoring and test environment
Intensity, the electromagnetic radiation intensity in moment monitoring and test environment are alarmed if the potential difference of amplification is more than limit value, people to be safeguarded
After the running environment of member's Inspection and maintenance context and server internal, still continue the electricity every 100ms monitoring and test environment
Magnetic radiation intensity, the electromagnetic radiation intensity in moment monitoring and test environment, if being more than that limit value continues to alarm.
The electromagnetic induction coil can be placed directly within inside machine box for server, and electromagnet radiation detection mould is accessed at the both ends of coil
Block, the alarm unit can be the alarm lamp of server, and when the potential difference of amplification is more than limit value, alarm lamp is issued
Alarm signal.
The above is only the specific embodiment of the application, is made skilled artisans appreciate that or realizing this Shen
Please, the protection scope of the application can not be limited with this.All equivalent change or modifications done according to the application Spirit Essence, all
It should contain in the protection scope of lid the application.
Claims (9)
1. a kind of radio frequency electromagnetic field radiation crosses threshold field strength's alarm system, which is characterized in that including electromagnetic induction coil and electromagnetism
Electro-magnetic radiation detection modules, the electro-magnetic radiation detection modules are accessed in the both ends of radiation detection modules, the electromagnetic induction coil
Include:
Voltage tester unit, for testing the potential difference at electromagnetic induction coil both ends,
Voltage amplification unit, for the potential difference detected to be amplified,
Limit value comparison unit, for the potential difference of amplification to be compared with limit value,
Alarm unit, for alarming when the potential difference signal of amplification is more than limit value.
2. a kind of radio frequency electromagnetic field radiation as described in claim 1 crosses threshold field strength's alarm system, which is characterized in that described
Electromagnetic induction coil diameter is 50mm, and the number of turns is 200 circles.
3. a kind of radio frequency electromagnetic field radiation as described in claim 1 crosses threshold field strength's alarm system, which is characterized in that described
Electro-magnetic radiation detection modules further include voltage modulated unit, what the voltage modulated unit was used to test potential difference test cell
Potential difference carries out frequency modulation(PFM).
4. a kind of radio frequency electromagnetic field radiation as described in claim 1 crosses threshold field strength's alarm system, which is characterized in that described
Alarm unit is a kind of light emitting device, and user is warned by way of light-emitting flash.
5. a kind of radio frequency electromagnetic field radiation as described in claim 1 crosses threshold field strength's alarm system, which is characterized in that described
Alarm unit is a kind of generating device, and user is warned by way of making a sound.
6. a kind of radio frequency electromagnetic field radiation as described in claim 1 crosses threshold field strength's alarm system, which is characterized in that the electricity
Potential difference of the potential difference test cell every 100ms test electromagnetic induction coil both ends.
7. a kind of radio frequency electromagnetic field radiation crosses threshold field strength's alarm method, which comprises the following steps:
Electromagnetic induction coil is placed in test environment；
Test the potential difference at electromagnetic induction coil both ends；
Potential difference is amplified, is compared with limit value；
If the potential difference of amplification is less than limit value, continues the electromagnetic radiation intensity of monitoring and test environment, otherwise, then alarm.
8. a kind of radio frequency electromagnetic field radiation as claimed in claim 7 crosses threshold field strength's alarm method, which is characterized in that described
Before the step of amplifying to potential difference, comparing with limit value, frequency modulation(PFM) is carried out to the potential difference of acquisition.
9. a kind of radio frequency electromagnetic field radiation as claimed in claim 7 crosses threshold field strength's alarm method, which is characterized in that described
If the potential difference of amplification is less than limit value, continue the electromagnetic radiation intensity of monitoring and test environment, otherwise, then the step of alarm
In, if the potential difference of amplification is less than limit value, continue the electromagnetic radiation intensity every 100ms monitoring and test environment, moment prison
Electromagnetic radiation intensity in test environment.
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| CN102841264A (en) * | 2012-09-03 | 2012-12-26 | 北京大学深圳研究生院 | Passive detection method for electromagnetic radiation and portable alarm device |
| CN103149456A (en) * | 2013-02-27 | 2013-06-12 | 姜秀坤 | Handheld electromagnetic radiation tester |
| CN103926473A (en) * | 2014-04-29 | 2014-07-16 | 吴圣铎 | Electromagnetic field detection device |
| CN203838250U (en) * | 2014-04-01 | 2014-09-17 | 周光明 | Electromagnetic field detector |
| CN108169581A (en) * | 2017-12-26 | 2018-06-15 | 上海展扬通信技术有限公司 | Detection method of electromagnetic radiation, device, terminal and computer readable storage medium |
| CN108287270A (en) * | 2018-04-28 | 2018-07-17 | 四川巴斯德环境检测技术有限责任公司 | A kind of electromagnet radiation detection system |
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2018
- 2018-11-28 CN CN201811434852.6A patent/CN109298250A/en active Pending
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| CN101968516A (en) * | 2010-08-26 | 2011-02-09 | 刘家发 | Electromagnetic radiation detection device |
| CN102346220A (en) * | 2011-09-02 | 2012-02-08 | 殷丽芳 | Portable electromagnetic radiation detector |
| CN102841264A (en) * | 2012-09-03 | 2012-12-26 | 北京大学深圳研究生院 | Passive detection method for electromagnetic radiation and portable alarm device |
| CN103149456A (en) * | 2013-02-27 | 2013-06-12 | 姜秀坤 | Handheld electromagnetic radiation tester |
| CN203838250U (en) * | 2014-04-01 | 2014-09-17 | 周光明 | Electromagnetic field detector |
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