CN109709377A - A kind of current detector - Google Patents
A kind of current detector Download PDFInfo
- Publication number
- CN109709377A CN109709377A CN201910168191.5A CN201910168191A CN109709377A CN 109709377 A CN109709377 A CN 109709377A CN 201910168191 A CN201910168191 A CN 201910168191A CN 109709377 A CN109709377 A CN 109709377A
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- module
- current detector
- geomagnetic sensor
- circuit board
- micro controller
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- 230000006698 induction Effects 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims description 14
- 230000001133 acceleration Effects 0.000 claims description 7
- 230000005389 magnetism Effects 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000005426 magnetic field effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The present invention relates to a kind of current detectors, including shell, circuit board, the lid pressing plate of setting inside housings；Surface of shell has the metallic channel for placing conducting wire, and lid pressing plate, which can be fixedly mounted on shell and cover conducting wire, is fixed in metallic channel；Circuit board includes micro controller module and the wireless communication module connecting with micro controller module, geomagnetic sensor module；Geomagnetic sensor module is for acquiring the magnetic induction intensity of electrified wire nearby；Micro controller module is used to be converted into the current effective value of electrified wire according to the magnetic induction intensity of acquisition, and module externally sends the heartbeat data including unique identifier, current effective value by wireless communication.Current detector of the present invention detects the current effective value and temperature value of electrified wire in a manner of non-intruding, and usually timing externally sends heartbeat data, sends alarm signal, simple installation itself, long service life when electric current or when the temperature is excessively high.
Description
Technical field
The present invention relates to electricity fields, and in particular to a kind of current detector.
Background technique
Conventional current detector is divided into temporary detecting and long-term detection, and temporary current detector is using tong-type ammeter as generation
Table, there are two openable binding clips for general tong-type ammeter tool, and opening binding clip when detecting makes measured wire pass through jaw, then
Closure binding clip can detect electric current.The advantages of tong-type ammeter is handheld instrument, does not have to wiring, can not cut off circuit
The case where get off to measure electric current, belong to Noninvasive testing, it is very convenient.
And long-term current detector, since it is desired that detecting current in wire for a long time, currently used method is to examine electric current
It surveys device and is directly accessed circuit to be detected and be acquired current value, belong to intrusive detection.This intrusive detection, which may require that, to be changed
Primary circuit is made, and the presence of current detector itself may also will affect integrated circuit.
Summary of the invention
For the shortcoming for avoiding background technique, the present invention provides a kind of current detector of Noninvasive testing, can be straight
It connects and is fixed in measured wire, acquire current data, and send by wireless signal.
A kind of current detector proposed by the present invention, including shell, circuit board, the lid pressing plate of setting inside housings；Shell
Body surface face has a metallic channel for placing conducting wire, and lid pressing plate can be fixedly mounted on shell and cover conducting wire and be fixed in and lead
Wire casing；Circuit board includes micro controller module and the wireless communication module connecting with micro controller module, geomagnetic sensor mould
Block；Geomagnetic sensor module is for acquiring the magnetic induction intensity of electrified wire nearby；Micro controller module is used for according to acquisition
Magnetic induction intensity is converted into the current effective value of electrified wire, and it includes unique identification that module, which is externally sent, by wireless communication
Heartbeat data including code, current effective value.
Further, circuit board further includes the temperature sensor module connecting with micro controller module, temperature sensor mould
Block is used to acquire the conductor temperature value of electrified wire, and heartbeat data further includes conductor temperature value.
Further, geomagnetic sensor module includes the first geomagnetic sensor and the second geomagnetic sensor, and the first earth magnetism passes
Sensor is fixed on circuit boards, and the second geomagnetic sensor is fixed on lid pressing plate；First geomagnetic sensor and the second earth magnetism sensing
Device is axis into symmetric relation using conducting wire.
Further, the second geomagnetic sensor is connect with micro controller module by connector, and lid pressing plate is equipped with and second
The contact pin of the pin connection of geomagnetic sensor, circuit board are equipped with the plug receptacle cooperated with contact pin in contact pin corresponding position.
Further, circuit board further includes the acceleration sensor module connecting with micro controller module, acceleration sensing
Device module is used to detect the motion state of current detector, when detecting that current detector is kept in motion, microcontroller
Module externally sends mobile alarm signal to module by wireless communication.
It further, further include circuit board further include the installation detection module being connect with micro controller module, installation detection
Module is for detecting whether current detector is in use state, the micro controller module when current detector is in use state
It can star geomagnetic sensor module.
Preferably, installation detection module is button switch module, and conducting wire trench bottom is equipped with a through-hole, button switch module
Button passes through through-hole, and when button is depressed by conducting wire, micro controller module can star geomagnetic sensor module.
Preferably, shell is connected by a snap with lid pressing plate.
Further, housing side has several clamps, has the unidirectional block tongue of reversed acanthoid in clamp；Lid pressing plate has several
Cassette tape corresponding with clamp, dentate groove on cassette tape.
The beneficial effects of the invention are that current detector detected in a manner of non-intruding electrified wire current effective value and
Temperature value, usually timing externally sends heartbeat data, sends alarm signal when electric current or when the temperature is excessively high, simple installation itself,
Long service life.
Detailed description of the invention
Fig. 1 is the structural blast schematic diagram of the embodiment of the present invention.
Fig. 2 is the module composition schematic diagram of the circuit board in the embodiment of the present invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment, referring to attached drawing 1-2, a kind of current detector, including pedestal 1, battery 2, circuit board 3, upper cover 4 and lid
Pressing plate 6；The enclosure interior that pedestal 1 is arranged in battery 2 and circuit board 3 and upper cover 4 is formed；4 surface of upper cover has leads for placing
The metallic channel 4a of line 5, lid pressing plate 6, which can be fixedly mounted in upper cover 4 and cover conducting wire 5, is fixed in metallic channel 4a；Circuit board 3
Including the micro controller module 3a and geomagnetic sensor module 3b being connect with micro controller module 3a, wireless communication module 3c,
Temperature sensor module 3d and button switch module 3f；Geomagnetic sensor module 3b is close for periodically starting acquisition conducting wire 5
The magnetic induction intensity at place；Temperature sensor module 3d is for periodically starting the temperature value of acquisition conducting wire 5；Button switch module 3f
For detecting whether current detector is in use state；Micro controller module 3a is used to be calculated according to the magnetic induction intensity of acquisition
The current effective value of electrified wire 5, and can by wireless communication module 3c externally send it is effective including unique identifier, electric current
Heartbeat data including value, 5 temperature value of conducting wire；When detect current effective value be more than threshold value or the temperature rise in short-term of 5 temperature value of conducting wire
When becoming non-working condition from use state more than threshold value or current detector, micro controller module 3a can also be by wireless
Communication module 3c externally sends the excessive alarm signal of electric current, the excessive alarm signal of temperature rise and unloading alarm signal respectively.
The present embodiment current detector is suitable for detecting the AC current of fixed frequency, such as the alternating current of 50Hz,
Cardinal principle is by geomagnetic sensors detection because the magnetic induction intensity that electrified wire 5 generates converses current effective value；Logical
Around electric straight wire, one is done in conductive wire cross-section using conducting wire as the annulus in the center of circle, the magnetic field strength edge of annulus tangential direction
The path integral of annulus be electric current in annulus, what it is due to geomagnetic sensors detection is magnetic induction intensity i.e. test point
Magnetic field strength and the material magnetic conductivity product, therefore the virtual value of the reading of geomagnetic sensor can exist with current value
Linear relationship.Specifically, product is actually detected in use, current detector acquires magnetic induction intensity point in the period of magnetic field, lead to
It crosses equivalent sampling method and obtains the magnetic induction intensity value of each discrete point in the single magnetic field period, then subtract detected when power-off
Background magnetic induction intensity value obtains the magnetic induction intensity value that each discrete point is generated by electric current, and background magnetic induction intensity value is by each
The magnetic induction intensity value of each discrete point detected when power-off is acquired by arithmetic mean of instantaneous value；Then each point that will be generated again by electric current
Magnetic induction intensity value acquires magnetic induction intensity virtual value by root-mean-square value, is multiplied by between magnetic induction intensity and current value
Number finally obtains current effective value, which can be obtained by calibration instrument field calibration.
The present embodiment current detector detects the current effective value and temperature value of electrified wire in a manner of non-intruding, usually
Timing externally sends heartbeat data, sends alarm signal when electric current or when the temperature is excessively high；The present embodiment current detector can be applied
The electrified wire 5, is then put by the electrified wire in any equipment, the electrified wire object that determination need to detect when use
Finally lid pressing plate 6 and upper cover 4 are fixedly mounted by the metallic channel 4a of lid 4, easy for installation, and self-powered without external confession
Electricity, useful life is up to 2-3.
In view of the possible application of the present embodiment current detector is in the scene of electric vehicle, the characteristics of electric vehicle be using
With regularity, most of electric vehicle uses on daytime, and the conducting wire that is kept in motion is powered, and remains static conducting wire at night
No power；In order to reduce power consumption, it improves service life, in the present embodiment, circuit board 3 further includes connecting with micro controller module 3a
Acceleration sensor module 3e, when acceleration sensor module 3e, which is detected, to remain static, micro controller module 3a
The detection frequency and heartbeat data that electric current and temperature can be reduced send frequency；It is in when detecting in motion state or charging shape
When state, micro controller module 3a can improve electric current again and the detection frequency and heartbeat data of temperature send frequency, wherein filling
Electricity condition can be combined by current value size and stationary state to be judged.If the application scenarios of current detector are peaces
Mounted in static equipment, when acceleration sensor module 3e, which is detected, to be kept in motion, micro controller module 3a can
To send mobile alarm signal.
Current detector mainly passes through the current effective value that detection magnetic induction intensity calculates electrified wire 5, this there is one
A problem, if tested electrified wire 5 nearby has other electrified wires 5 or tested electrified wire 5 to be placed in one in itself
In a environment with magnetic field, then the magnetic induction intensity that current detector detects may be affected, it is final to count
The current effective value of calculating will have large error.There are two solutions, first is that going correction to count by the way that environmental parameter is arranged
It calculates as a result, it is desirable to which technical staff directly inputs environmental parameter according to the actual working environment of current detector at the scene；Second is that the greatest extent
Amount reduces the interference of external environment；For second method, in order to reduce the interference effect of other electric wires or external magnetic field, this reality
Applying the geomagnetic sensor module 3b in a current detector includes the first geomagnetic sensor and the second geomagnetic sensor, the first earth magnetism
Sensor is fixed on circuit board 3, and the second geomagnetic sensor is fixed on lid pressing plate 6；First geomagnetic sensor and the second earth magnetism
Sensor is axis into symmetric relation with conducting wire 5；Second geomagnetic sensor is connect with micro controller module 3a by connector, lid pressure
Plate 6 is equipped with the contact pin that connect with the pin of the second geomagnetic sensor, and circuit board 3 is in contact pin corresponding position equipped with cooperating with contact pin
Plug receptacle.Since two Magnetic Sensors are in physical symmetry relationship, the magnetic field size that conducting wire 5 generates on two Magnetic Sensors is identical
Direction is identical, and the induction level same direction of environmental magnetic field effect on the two sensors is on the contrary, this structure is mutual
It counteracts environmental magnetic field and doubles 5 magnetic field of conducting wire.
Upper cover 4 and lid pressing plate 6 are connected by a snap in the present embodiment, specifically, 4 side of upper cover has several clamp 4b,
There is the unidirectional block tongue of reversed acanthoid in clamp 4b；Lid pressing plate 6 has several cassette tape 6as corresponding with clamp, zigzag ditch on cassette tape 6a
Slot；Buckle installation compared to screw installation the advantage is that install convenient, be not necessarily to additional screw part, and fasten when will not be to conducting wire 5
Generate too big pressure.
Although the present invention is described by reference to preferred embodiment, those of ordinary skill in the art answer
Work as understanding, the description that can be not limited to the above embodiments can make in form and details each within the scope of the claims
Kind variation.
Claims (9)
1. a kind of current detector, it is characterised in that: including shell, circuit board, the lid pressing plate of setting inside housings；The shell
Body surface face has the metallic channel for placing conducting wire, and the lid pressing plate can be fixedly mounted on shell and cover conducting wire and be fixed
In the metallic channel；The circuit board include micro controller module and the wireless communication module being connect with micro controller module,
Geomagnetic sensor module；The geomagnetic sensor module is for acquiring the magnetic induction intensity of electrified wire nearby；The microcontroller
Device module is used to be converted into the current effective value of electrified wire according to the magnetic induction intensity of acquisition, and passes through the radio communication mold
Block externally sends the heartbeat data including unique identifier, current effective value.
2. a kind of current detector according to claim 1, it is characterised in that: the circuit board further includes and microcontroller
The temperature sensor module of module connection, the temperature sensor module is used to acquire the conductor temperature value of electrified wire, described
Heartbeat data further includes conductor temperature value.
3. a kind of current detector according to claim 1, it is characterised in that: the geomagnetic sensor module includes first
Geomagnetic sensor and the second geomagnetic sensor, first geomagnetic sensor are fixed on the circuit board, second earth magnetism
Sensor is fixed on the lid pressing plate；First geomagnetic sensor and the second geomagnetic sensor are closed using conducting wire as axis at symmetrical
System.
4. a kind of current detector according to claim 3, it is characterised in that: second geomagnetic sensor and microcontroller
Device module is connected by connector, and the lid pressing plate is equipped with the contact pin connecting with the pin of second geomagnetic sensor, described
Circuit board is equipped with the plug receptacle cooperated with contact pin in the contact pin corresponding position.
5. a kind of current detector according to claim 1, it is characterised in that: the circuit board further includes and microcontroller
The acceleration sensor module of module connection, the acceleration sensor module are used to detect the motion state of current detector,
When detecting that current detector is kept in motion, the micro controller module is externally sent by the wireless communication module
Mobile alarm signal.
6. a kind of current detector according to claim 1, it is characterised in that: further include that circuit board further includes and microcontroller
The installation detection module of device module connection, the installation detection module are used to detect whether current detector is in use state,
When current detector is in use state, the micro controller module can star the geomagnetic sensor module.
7. a kind of current detector according to claim 6, it is characterised in that: the installation detection module is button switch
Module, the conducting wire trench bottom are equipped with a through-hole, and the button of the button switch module passes through the through-hole, when the button quilt
The micro controller module can star the geomagnetic sensor module when conducting wire pressure.
8. a kind of current detector according to claim 1, it is characterised in that: the shell and lid pressing plate are connected by buckle
It connects.
9. a kind of current detector according to claim 8, it is characterised in that: the housing side has several clamps,
There is the unidirectional block tongue of reversed acanthoid in the clamp；The lid pressing plate has several cassette tapes corresponding with clamp, saws on the cassette tape
Dentation groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910168191.5A CN109709377A (en) | 2019-03-06 | 2019-03-06 | A kind of current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910168191.5A CN109709377A (en) | 2019-03-06 | 2019-03-06 | A kind of current detector |
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| Publication Number | Publication Date |
|---|---|
| CN109709377A true CN109709377A (en) | 2019-05-03 |
Family
ID=66266352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910168191.5A Pending CN109709377A (en) | 2019-03-06 | 2019-03-06 | A kind of current detector |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304360A (en) * | 2019-08-02 | 2021-02-02 | 施耐德电器工业公司 | Apparatus for measuring operating parameters of electronic device and measuring method thereof |
| CN112485505A (en) * | 2020-11-10 | 2021-03-12 | 电子科技大学 | High-frequency alternating current amplitude detection method based on infrared thermal imaging |
| CN114994396A (en) * | 2022-07-18 | 2022-09-02 | 湖北工业大学 | Non-invasive load monitoring device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120200291A1 (en) * | 2011-02-09 | 2012-08-09 | International Business Machines Corporation | Non-contact current and voltage sensor |
| JP2013171013A (en) * | 2012-02-23 | 2013-09-02 | Tdk Corp | Current sensor |
| CN204330852U (en) * | 2014-12-09 | 2015-05-13 | 丹纳赫（上海）工业仪器技术研发有限公司 | Can sensed position change electrical measurement |
| CN104914383A (en) * | 2015-06-26 | 2015-09-16 | 双竞科技有限公司 | Battery health condition detection module, system thereof and battery with detection module |
| US20170315156A1 (en) * | 2016-04-29 | 2017-11-02 | Win Sheng Cheng | Current sensor and battery current monitoring system |
| JP2018028477A (en) * | 2016-08-18 | 2018-02-22 | 株式会社Ｓａｓｓｏｒ | Electric power measurement device |
| CN108152556A (en) * | 2018-01-18 | 2018-06-12 | 吉林大学 | It is passive to encourage the non-contact current sense measuring device of self-power wireless and measuring method |
| US20180284168A1 (en) * | 2017-03-28 | 2018-10-04 | AVTECH Software, Inc. | Non-contact power detection device |
| CN109188067A (en) * | 2018-11-27 | 2019-01-11 | 南方电网科学研究院有限责任公司 | A kind of current in wire measuring device and method |
| CN209673876U (en) * | 2019-03-06 | 2019-11-22 | 浙江天地人科技有限公司 | A kind of current detector |
-
2019
- 2019-03-06 CN CN201910168191.5A patent/CN109709377A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120200291A1 (en) * | 2011-02-09 | 2012-08-09 | International Business Machines Corporation | Non-contact current and voltage sensor |
| JP2013171013A (en) * | 2012-02-23 | 2013-09-02 | Tdk Corp | Current sensor |
| CN204330852U (en) * | 2014-12-09 | 2015-05-13 | 丹纳赫（上海）工业仪器技术研发有限公司 | Can sensed position change electrical measurement |
| CN104914383A (en) * | 2015-06-26 | 2015-09-16 | 双竞科技有限公司 | Battery health condition detection module, system thereof and battery with detection module |
| US20170315156A1 (en) * | 2016-04-29 | 2017-11-02 | Win Sheng Cheng | Current sensor and battery current monitoring system |
| JP2018028477A (en) * | 2016-08-18 | 2018-02-22 | 株式会社Ｓａｓｓｏｒ | Electric power measurement device |
| US20180284168A1 (en) * | 2017-03-28 | 2018-10-04 | AVTECH Software, Inc. | Non-contact power detection device |
| CN108152556A (en) * | 2018-01-18 | 2018-06-12 | 吉林大学 | It is passive to encourage the non-contact current sense measuring device of self-power wireless and measuring method |
| CN109188067A (en) * | 2018-11-27 | 2019-01-11 | 南方电网科学研究院有限责任公司 | A kind of current in wire measuring device and method |
| CN209673876U (en) * | 2019-03-06 | 2019-11-22 | 浙江天地人科技有限公司 | A kind of current detector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304360A (en) * | 2019-08-02 | 2021-02-02 | 施耐德电器工业公司 | Apparatus for measuring operating parameters of electronic device and measuring method thereof |
| CN112485505A (en) * | 2020-11-10 | 2021-03-12 | 电子科技大学 | High-frequency alternating current amplitude detection method based on infrared thermal imaging |
| CN114994396A (en) * | 2022-07-18 | 2022-09-02 | 湖北工业大学 | Non-invasive load monitoring device |
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