CN201654208U - Low-frequency magnetic field intensity measuring device - Google Patents
Low-frequency magnetic field intensity measuring device Download PDFInfo
- Publication number
- CN201654208U CN201654208U CN2010201126131U CN201020112613U CN201654208U CN 201654208 U CN201654208 U CN 201654208U CN 2010201126131 U CN2010201126131 U CN 2010201126131U CN 201020112613 U CN201020112613 U CN 201020112613U CN 201654208 U CN201654208 U CN 201654208U
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- electromagnetic field
- signal receiving
- frequency signal
- low frequency
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Abstract
An electromagnetic field measuring device comprises an electromagnetic field signal triggering device (1), an electromagnetic field signal receiving device (2) and an antenna (3). The electromagnetic field triggering device (1) comprises: a control unit (101), a low-frequency drive unit (102), a high-frequency signal receiving unit (104) and a display module (103); the electromagnetic field signal receiving device (2) is internally provided with a low-frequency signal receiving unit (201) and a high-frequency signal transmitting unit (202), wherein the control unit (101) is used for configuring the low-frequency drive unit (102) and the high-frequency signal receiving unit (104); the low-frequency drive unit (102) is connected with the antenna (3) to generate a low-frequency electromagnetic field; the electromagnetic field signal receiving device (2) provided with the low-frequency signal receiving unit (201) measures the magnetic field intensity at a certain position and transmits a measurement value to the high-frequency signal receiving unit (104) through the high-frequency signal transmitting unit (202); and the display module (103) displays the measurement value. The electromagnetic field testing device is simple in operation, convenient to carry and very beneficial to on-site tests.
Description
Technical field
The utility model is mainly used in no key and enters exploitation with start-up system, belongs to the low frequency magnetic field strength meter.
Background technology
Measurement to magnetic field intensity at present generally all is based on signal generator and spectrum analyzer.Produce the radiofrequency signal of a certain frequency with signal generator, by antenna with radiofrequency signal to airborne spread, form electromagnetic field.The magnetic field intensity of coming the measurement space position then with spectrum analyzer that connect to go up special field probe.This method can realize the magnetic field intensity measurement in the broad spectrum scope, but because signal generator and spectrum analyzer are not portable, when using at the scene and for inconvenient.Automobile do not have key enter with start-up system in when detecting magnetic field intensity in each surveyed area of demarcating, it is very inconvenient to use said method.Therefore need be a kind of simple to operate, easy to carry, help the low frequency magnetic field strength meter of on-the-spot test.
The utility model content
The utility model provides a kind of electromagnetic field measuring device, comprises electromagnetic field signal flip flop equipment, electromagnetic field signal receiving trap and antenna, and described electromagnetic field flip flop equipment comprises: control module, low frequency drive unit, high-frequency signal receiving element and display module; Built-in low frequency signal receiving element of described electromagnetic field signal receiving trap and high-frequency signal transmitting element; Wherein, described control module is used to dispose described low frequency drive unit and described high-frequency signal receiving element, described low frequency drive unit links to each other with described antenna, produce a low frequency electromagnetic field, the described electromagnetic field signal receiving trap that described low frequency signal receiving element is housed is in a certain position measurement magnetic field intensity, and measured value sent to the high frequency receiving element by the high-frequency signal transmitting element, display module shows described measured value.
Preferably, described antenna is a car antenna.
Preferably, described electromagnetic field signal receiving trap is a car key.
Preferably, described low frequency signal is the electromagnetic field of 125kHz.
By technique scheme, advantage and beneficial effect that electromagnetic field measuring device of the present utility model has are: this device is simple to operate, and is easy to carry, is very beneficial for on-the-spot test.
Description of drawings
Fig. 1 is the system chart of electromagnetic field measuring device.
Embodiment
With reference to figure 1, electromagnetic field measuring device of the present utility model comprises electromagnetic field signal flip flop equipment 1, car key 2 and car antenna 3, electromagnetic field flip flop equipment 1 comprises: control module 101, low frequency drive unit 102, high-frequency signal receiving element 104 and display module 103; Car key 2 built-in low frequency signal receiving element 201 and high-frequency signal transmitting elements 202.
The working method of electromagnetic field measuring device is as follows:
1. utilize 101 pairs of low frequency signal driver elements 102 of control module and high-frequency signal receiving element 104 to finish suitable configuration.
2. after beginning to measure, low frequency signal driver element 102 produces the low frequency signal of 125kHz, and the low-frequency antenna 3 by installing on the automobile, produces the electromagnetic field of a 125kHz.
3. measure the intensity in this magnetic field with the optional position of key outside Che Nei or car that low frequency signal receiving element 201 is housed, and measured value is sent to high-frequency signal receiving element 104 by high-frequency signal transmitting element 202.
4. this measured value finally can be presented on the display module 103.
Wherein, control module and display module can be realized by a PC that Control Software is housed.
Claims (4)
1. electromagnetic field measuring device is characterized in that: comprise electromagnetic field signal flip flop equipment (1), electromagnetic field signal receiving trap (2) and antenna (3),
Described electromagnetic field flip flop equipment (1) comprising: control module (101), low frequency drive unit (102), high-frequency signal receiving element (104) and display module (103);
Built-in low frequency signal receiving element of described electromagnetic field signal receiving trap (2) (201) and high-frequency signal transmitting element (202);
Wherein, described control module (101) is used to dispose described low frequency drive unit (102) and described high-frequency signal receiving element (104), described low frequency drive unit (102) links to each other with described antenna (3), produce a low frequency electromagnetic field, the described electromagnetic field signal receiving trap (2) that described low frequency signal receiving element (201) is housed is in a certain position measurement magnetic field intensity, and measured value sent to described high-frequency signal receiving element (104) by described high-frequency signal transmitting element (202), described display module (103) shows described measured value.
2. electromagnetic field measuring device as claimed in claim 1, described antenna are car antenna.
3. electromagnetic field measuring device as claimed in claim 1, described electromagnetic field signal receiving trap is a car key.
4. electromagnetic field measuring device as claimed in claim 1, described low frequency electromagnetic field are the electromagnetic field of 125kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201126131U CN201654208U (en) | 2010-02-11 | 2010-02-11 | Low-frequency magnetic field intensity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201126131U CN201654208U (en) | 2010-02-11 | 2010-02-11 | Low-frequency magnetic field intensity measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201654208U true CN201654208U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201126131U Expired - Lifetime CN201654208U (en) | 2010-02-11 | 2010-02-11 | Low-frequency magnetic field intensity measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201654208U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044101A (en) * | 2010-11-30 | 2011-05-04 | 深圳市航盛电子股份有限公司 | Smart card positioning method for automobile wireless access control system |
| CN102157021A (en) * | 2010-11-30 | 2011-08-17 | 深圳市航盛电子股份有限公司 | Automobile intelligent card positioning system |
| CN102608548A (en) * | 2012-03-19 | 2012-07-25 | 科世达（上海）管理有限公司 | PEPS (Passive Entry Passive Start) low-frequency calibration system and method |
| CN102692619A (en) * | 2012-06-07 | 2012-09-26 | 科世达（上海）管理有限公司 | Passive keyless entry and passive keyless start (PEPS) low-frequency calibration system and method |
| CN103280006A (en) * | 2013-04-26 | 2013-09-04 | 上海纳恩汽车技术有限公司 | System and method for detecting intelligent key |
| CN104330646A (en) * | 2014-11-04 | 2015-02-04 | 国网河南省电力公司南阳供电公司 | Transformer substation environment assessment early warning system and method based on compressed-sensing reconstruction algorithm |
| CN104483141A (en) * | 2014-12-29 | 2015-04-01 | 重庆集诚汽车电子有限责任公司 | System and method for wireless communication test of automobile passive entry and passive start system |
-
2010
- 2010-02-11 CN CN2010201126131U patent/CN201654208U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044101A (en) * | 2010-11-30 | 2011-05-04 | 深圳市航盛电子股份有限公司 | Smart card positioning method for automobile wireless access control system |
| CN102157021A (en) * | 2010-11-30 | 2011-08-17 | 深圳市航盛电子股份有限公司 | Automobile intelligent card positioning system |
| CN102044101B (en) * | 2010-11-30 | 2012-07-25 | 深圳市航盛电子股份有限公司 | Smart card positioning method for automobile wireless access control system |
| CN102157021B (en) * | 2010-11-30 | 2013-06-19 | 深圳市航盛电子股份有限公司 | Automobile intelligent card positioning system |
| CN102608548A (en) * | 2012-03-19 | 2012-07-25 | 科世达（上海）管理有限公司 | PEPS (Passive Entry Passive Start) low-frequency calibration system and method |
| CN102692619A (en) * | 2012-06-07 | 2012-09-26 | 科世达（上海）管理有限公司 | Passive keyless entry and passive keyless start (PEPS) low-frequency calibration system and method |
| CN103280006A (en) * | 2013-04-26 | 2013-09-04 | 上海纳恩汽车技术有限公司 | System and method for detecting intelligent key |
| CN103280006B (en) * | 2013-04-26 | 2016-08-31 | 上海纳恩汽车技术有限公司 | Intelligent key detecting system and method |
| CN104330646A (en) * | 2014-11-04 | 2015-02-04 | 国网河南省电力公司南阳供电公司 | Transformer substation environment assessment early warning system and method based on compressed-sensing reconstruction algorithm |
| CN104483141A (en) * | 2014-12-29 | 2015-04-01 | 重庆集诚汽车电子有限责任公司 | System and method for wireless communication test of automobile passive entry and passive start system |
| CN104483141B (en) * | 2014-12-29 | 2017-07-04 | 重庆集诚汽车电子有限责任公司 | A kind of automobile no-key enters and radio communication detecting system and method without key activation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |