CN205484575U - Near field detecting device - Google Patents
Near field detecting device Download PDFInfo
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- CN205484575U CN205484575U CN201620217479.9U CN201620217479U CN205484575U CN 205484575 U CN205484575 U CN 205484575U CN 201620217479 U CN201620217479 U CN 201620217479U CN 205484575 U CN205484575 U CN 205484575U
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- near field
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- 238000001514 detection method Methods 0.000 claims abstract description 57
- 239000000523 sample Substances 0.000 claims abstract description 30
- 230000005684 electric field Effects 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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Abstract
The utility model discloses a near field detecting device, near field detecting device includes interconnect's probe and measurement portion, measurement portion includes: amplifier and indicator, wherein, the probe configuration correspondingly is the signal conversion who surveys the searching current or surveys voltage transmission extremely for the intensity of surveying electric field or magnetic field the amplifier, the amplifier with the indicator is connected, the amplifier configuration is will the searching current or survey the voltage amplification after send to the indicator, the indicator configuration is the basis corresponding instruction is made to the intensity change of searching current or detection voltage. The utility model discloses can measure electric field or magnetic field intensity and intensity change under the condition of not using complex equipment such as frequency spectrograph simply fast to give the user with the audio -visual reaction of measuring result, the device low cost, operating personnel need not train and to use, have the popularization prospect.
Description
Technical Field
The utility model relates to a detection equipment field, in particular to near field detection device.
Background
At present, when the electric field or the magnetic field intensity is measured, an electromagnetic probe and a spectrum analyzer are generally needed, the electromagnetic probe can be used in combination with the spectrum analyzer to measure the electric field or the magnetic field intensity, and the measurement purpose cannot be achieved by independent use. But the frequency spectrum analyzer is expensive, and the demonstration is not directly perceived, and the frequency spectrum analyzer is bulky in addition and carries inconveniently, and the operation professional is strong during the use, needs trained professional technical personnel to operate, brings inconvenience for the measurement process.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a near field detection device uses the device can measure electric field or magnetic field intensity and intensity variation simply conveniently.
In order to solve the technical problem, the utility model discloses a following technical scheme: a near field probe apparatus comprising a probe and a measurement section connected to each other, the measurement section comprising: an amplifier and an indicator; wherein,
the probe is configured to detect the strength of the electric field or the magnetic field and convert a detected signal into a detection current or a detection voltage correspondingly and send the detection current or the detection voltage to the amplifier;
the amplifier is connected with the indicator, and the amplifier is configured to amplify the detection current or the detection voltage and then send the amplified detection current or detection voltage to the indicator;
the indicator is configured to make corresponding indication according to the intensity change of the detection current or the detection voltage.
Preferably, the indicator includes an indicator light and/or a buzzer, the indicator light changes in brightness according to a change in the amplified detection voltage or detection current applied thereto; the buzzer generates sound intensity change according to the amplified detection voltage or detection current applied on the buzzer.
Preferably, the amplifier is an amplifying circuit including at least one transistor.
Preferably, the measuring unit further includes a bias circuit connected to a base of the transistor to drive the amplifier.
Preferably, the probe has a probe portion which is configured in a ring shape or a cylindrical shape to detect the strength of the electric field or the magnetic field, respectively.
Preferably, the measurement unit is provided with a power supply configured to supply power to the measurement unit.
Preferably, the measuring part is further provided with a switch configured to turn on or off the measuring part.
The beneficial effects of the utility model reside in that: the device can simply and rapidly measure the change of the electric field or the magnetic field intensity and the intensity without using complex equipment such as a frequency spectrograph, and the like, and gives a user the intuitive reaction of the measurement result, and the device has low cost, can be used by an operator without training, and has popularization prospect.
Drawings
Fig. 1 is a schematic structural diagram of a near field detection device according to an embodiment of the present invention;
fig. 2 is a perspective view of a near field detection device according to an embodiment of the present invention;
fig. 3 is another perspective view of the near field detection device according to the embodiment of the present invention;
Fig. 4 is a circuit diagram of an amplifier and an indicator of a near field detection device according to an embodiment of the present invention;
fig. 5 is another circuit diagram of the amplifier and the indicator of the near field detection device according to the embodiment of the present invention.
Description of the reference numerals
1-probe 2-measuring part 3-indicator lamp 4-buzzer
5-switch 21-amplifier 22-indicator
Detailed Description
In order to make the present invention better understood by those skilled in the art, the following detailed description of the embodiments of the present invention refers to the accompanying drawings, which are not intended to limit the present invention.
The utility model discloses a near field detection device of embodiment can measure the intensity in electric field or magnetic field, as shown in fig. 2 and fig. 3, including interconnect's probe 1 and measuring part 2, measuring part 2 includes: an amplifier 21 and an indicator 22; wherein the probe 1 is configured to detect the strength of the electric field or the magnetic field and accordingly convert the detected signal into a detection current or a detection voltage to be sent to the amplifier 21; as shown in fig. 1, the amplifier 21 is connected to the indicator 22, the amplifier 21 is configured to amplify the detected current or detected voltage and then transmit the amplified current or detected voltage to the indicator 22, and since the strength of the electric field or magnetic field detected by the present apparatus is usually weak, in order to better use the signal captured by the probe 1, the amplifier 21 is required to amplify the current or voltage corresponding to the signal, for example, the induced electromotive force detected by the probe 1 is amplified, so as to facilitate the operation of the indicator 22; the indicator 22 is configured to make a corresponding indication according to the intensity change of the detection current or the detection voltage to inform the user of the intensity of the electric field or the magnetic field, the indicator 22 may be a high-precision instrument or a simpler instrument, but the high-precision instrument has a higher cost and is more complicated to operate, the simple instrument has a low cost and is simple and convenient to operate but has a low measurement precision, and the user may select different indicators 22 according to actual conditions.
In an embodiment of the present invention, the indicator 22 includes an indicator light 3 and/or a buzzer 4, the indicator light 3 changes brightness according to the amplified detection voltage or detection current applied thereto, for example, when the strength of the electric field or magnetic field detected by the probe 1 becomes stronger, the signal detected by the probe 1 becomes stronger, the corresponding current or voltage becomes larger, after the amplification effect of the amplifier 21, the current or voltage loaded on the indicator light 3 becomes larger, and the brightness of the indicator light 3 changes from weak to strong; the buzzer 4 changes its sound intensity according to the change of the amplified detection voltage or detection current applied thereto, for example, when the strength of the electric field or magnetic field detected by the probe 1 becomes weak, the signal detected by the probe 1 becomes weak, and the corresponding current or voltage becomes small, and after the amplification action of the amplifier 21, the current or voltage applied to the buzzer 4 becomes small, and the tone of the buzzer 4 becomes weak.
The amplifier 21 may be an amplifying circuit including at least one transistor, or may be another current or voltage amplifying circuit. In an embodiment of the utility model, when using this device to survey electric field intensity, amplifier 21 and indicator 22's relevant circuit diagram is as shown in fig. 4, amplifier 21 is the amplifier circuit including a triode, probe 1 is connected with the base of triode, 3 one ends of pilot lamp are connected with the collecting electrode of triode, the other end ground connection of pilot lamp 3, ground connection behind the projecting pole of triode passes through resistance R3 in addition, the collecting electrode of triode still series connection has resistance R2, resistance R2 still series connection has power supply. When the device is used for detecting the magnetic field intensity, the related circuit diagram of the amplifier 21 and the indicator 22 is shown in fig. 5, the amplifier 21 is an amplifying circuit comprising a triode, one end of the probe 1 is connected with the base electrode of the triode, the other end of the probe 1 is grounded, one end of the indicator lamp 3 is connected with the collector electrode of the triode, the other end of the indicator lamp 3 is grounded, in addition, the emitter electrode of the triode is grounded after passing through a resistor R3, the collector electrode of the triode is also connected with a resistor R2 in series, and the resistor R2 is also connected with a power supply in series.
When the amplifier 21 is an amplifying circuit including a transistor, since the strength of the electric field or the magnetic field detected by the probe 1 is usually weak and is not enough to drive the transistor to generate amplification when converted into corresponding current or voltage, the measuring part 2 in this embodiment further includes a bias circuit R1, and the bias circuit R1 is connected to the base of the transistor to drive the amplifier 21, so that the amplifier 21 has an operating condition.
As shown in fig. 2 and 3, the probe 1 has a detection part and a connection part, the detection part is connected with the measurement part 2 through the connection part, it is easier to detect the intensity of current using a cylindrical detection device when detecting an electric field (as shown in fig. 3) and it is easier to detect the intensity of current using a doughnut-shaped detection device when detecting a magnetic field (magnetic lines of force will be detected through a doughnut-shaped as shown in fig. 2) according to the basic principles of physics, and thus the detection part is configured in a doughnut shape or a cylindrical shape to detect the intensity of an electric field or a magnetic field accordingly. The probe 1 is converted into corresponding current or voltage according to the detection result and is connected to the measuring part 2 through the connecting part; or the probe 1 directly sends the detected result of the electric field or the magnetic field intensity to the measuring part 2, and the measuring part 2 carries out corresponding processing and then loads corresponding current or voltage to the amplifier 21. Furthermore, the measurement unit 2 is provided with a power supply, which may be a battery or other power supply device, configured to supply power to the measurement unit 2. The measuring part 2 is further provided with a switch 5, the switch 5 is arranged on the shell of the measuring part 2, the switch 5 is configured to turn on or off the measuring part 2, and a user can manually turn on or off the switch 5.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (7)
1. A near field probe apparatus, comprising a probe head and a measuring portion connected to each other, the measuring portion comprising: an amplifier and an indicator; wherein,
the probe is configured to detect the strength of the electric field or the magnetic field and convert a detected signal into a detection current or a detection voltage correspondingly and send the detection current or the detection voltage to the amplifier;
the amplifier is connected with the indicator, and the amplifier is configured to amplify the detection current or the detection voltage and then send the amplified detection current or detection voltage to the indicator;
the indicator is configured to make corresponding indication according to the intensity change of the detection current or the detection voltage.
2. A near field detection device according to claim 1, wherein the indicator includes an indicator light and/or a buzzer, the indicator light changes in brightness according to a change in the amplified detection voltage or detection current applied thereto; the buzzer generates sound intensity change according to the amplified detection voltage or detection current applied on the buzzer.
3. A near field sensing device according to claim 1, wherein the amplifier is an amplifying circuit comprising at least one transistor.
4. A near field sensing device according to claim 3 wherein the measurement portion further comprises a bias circuit connected to the base of the transistor to drive the amplifier.
5. A near field detection device according to claim 1, characterized in that the probe has a probe portion configured in a ring shape or a cylinder shape to detect the intensity of the electric field or the magnetic field, respectively.
6. A near-field detection device according to claim 1, wherein a power supply is provided on the measurement portion, the power supply being configured to supply power to the measurement portion.
7. A near field detection device according to claim 1, wherein a switch is further provided on the measurement portion, the switch being configured to turn the measurement portion on or off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620217479.9U CN205484575U (en) | 2016-03-18 | 2016-03-18 | Near field detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620217479.9U CN205484575U (en) | 2016-03-18 | 2016-03-18 | Near field detecting device |
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| Publication Number | Publication Date |
|---|---|
| CN205484575U true CN205484575U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620217479.9U Active CN205484575U (en) | 2016-03-18 | 2016-03-18 | Near field detecting device |
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| CN (1) | CN205484575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443522A (en) * | 2016-08-30 | 2017-02-22 | 合肥联宝信息技术有限公司 | Magnetic field detection member and detection device |
| CN110531177A (en) * | 2019-09-27 | 2019-12-03 | 李珍 | A kind of method and instrument measuring electrostatic field direction and its intensity size |
-
2016
- 2016-03-18 CN CN201620217479.9U patent/CN205484575U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443522A (en) * | 2016-08-30 | 2017-02-22 | 合肥联宝信息技术有限公司 | Magnetic field detection member and detection device |
| CN106443522B (en) * | 2016-08-30 | 2019-05-24 | 合肥联宝信息技术有限公司 | A kind of magnet field probe component and detection device |
| CN110531177A (en) * | 2019-09-27 | 2019-12-03 | 李珍 | A kind of method and instrument measuring electrostatic field direction and its intensity size |
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