CN206057596U - A kind of digital electric magnetic induction Level measurement device - Google Patents
A kind of digital electric magnetic induction Level measurement device Download PDFInfo
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- CN206057596U CN206057596U CN201621077648.XU CN201621077648U CN206057596U CN 206057596 U CN206057596 U CN 206057596U CN 201621077648 U CN201621077648 U CN 201621077648U CN 206057596 U CN206057596 U CN 206057596U
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- 230000006698 induction Effects 0.000 title abstract description 7
- 238000005259 measurement Methods 0.000 title abstract 3
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 50
- 238000001514 detection method Methods 0.000 claims description 16
- 239000003990 capacitor Substances 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 230000002265 prevention Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 8
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036039 immunity Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Abstract
This utility model is related to a kind of digital electric magnetic induction Level measurement device, belongs to Level measurement field.Magnetic force cutting is done during this utility model permanent magnet element backswing to electromagnetic induction coil, so that coil produces the signal of telecommunication, electromagnetic induction coil is caused to produce induction voltage waveform during permanent magnet element backswing, it is filtered by comparator change-over circuit, and faradism swaging signal is converted into into Transistor-Transistor Logic level pulse signal, single-chip microcomputer receives Transistor-Transistor Logic level pulse signal and determines whether material；Cycle and the driving square wave of adjustable pulse width that the setting matching single-chip microcomputer of electric capacity sends, audion steady operation are made, dual function is integrated with anti-interference and current detecting；Anti- DC source reversal connection circuit can prevent electric power polarity wrong and burn each device；By comparator threshold adjustment circuit, threshold voltage is adjusted, adjust interference free performance of the present utility model, while facilitating single-chip microcomputer to carry out serial samples, detect easy to control flexible.
Description
Technical Field
The utility model belongs to the level detection area, concretely relates to digital electromagnetic induction level detection device.
Background
The working principle of the electromagnetic induction type material level detection is that the electromagnet is electrified to generate magnetism by controlling the periodical electrification and outage of the electromagnet, and magnetic thrust repulsive to the same polarity of the permanent magnet swing rod is generated, so that the permanent magnet swing rod is pushed outwards; after the electromagnet is powered off, the permanent magnet oscillating bar swings back, the electromagnet coil is electrified due to magnetic cutting, an electric signal is formed, and the oscillating state of the permanent magnet oscillating bar is judged by analyzing the electric signal, so that whether materials exist or not is judged.
The electromagnetic knock type object electronic module (application number: 201110054676.5) in the prior art is obtained by the above principle, but in the electronic module in the patent, a signal receiving mode is that an electric signal is amplified by a signal amplifying circuit and then is directly transmitted to a signal processing circuit for processing, and a signal of the mode is an analog signal and is not processed by a filter wave, so that the anti-interference capability and the reliability are low, and the problem of misjudgment caused by signal interference can occur for an electromagnetic induction type material level detection device which needs to judge whether materials exist or not by the signal and depends on the signal.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a digital electromagnetic induction level electronic module with signal anti-interference capability to overcome the defects of the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a digital electromagnetic induction level detection device comprises a shell, an electromagnetic induction coil, an electronic module, a permanent magnet swinging component and a hanging component for hanging the permanent magnet swinging component, wherein the electronic module and the electromagnetic induction coil are respectively arranged in the shell; the hanging part is arranged on the shell, and hangs the permanent magnet swinging part on one side of the electromagnetic induction coil, so that the permanent magnet swinging part is driven to swing outwards when the electromagnetic induction coil is electrified;
the electronic module comprises a direct current power supply reverse connection prevention circuit, a singlechip, a triode, a capacitor, a comparator conversion circuit and a signal output interface circuit,
wherein,
the direct-current power supply reverse connection prevention circuit is respectively connected to the single chip microcomputer, the electromagnetic induction coil, the signal output interface circuit and the comparator conversion circuit;
the single chip microcomputer is respectively connected to the comparator conversion circuit, the signal output interface circuit and the B pole of the triode;
the C pole of the triode is connected to the electromagnetic induction coil, and the E pole of the triode is grounded;
one end of the capacitor is connected to the electromagnetic induction coil, and the other end of the capacitor is grounded;
the comparator switching circuit is connected to the electromagnetic induction coil.
Further, the electronic module further includes a comparator threshold adjustment circuit coupled to the comparator switching circuit.
Furthermore, a resistor is connected in series between the circuit of the singlechip connected to the B pole of the triode.
Furthermore, the electronic module further comprises a data transmission interface, and the data transmission interface is connected to the single chip microcomputer.
Furthermore, the hanging part comprises a bracket and a hanging ring, and the bracket is provided with a first hanging hole; the permanent magnet swinging component consists of a permanent magnet pendulum bob and a swinging rod, the permanent magnet pendulum bob is arranged at one end of the swinging rod, and a second hanging hole is formed in the other end of the swinging rod; the hanging ring penetrates through the first hanging hole and the second hanging hole respectively to hang the permanent magnet pendulum bob on one side of the electromagnetic induction coil.
The utility model adopts the above technical scheme, possess following beneficial effect at least:
the utility model discloses do magnetic force cutting to electromagnetic induction coil when permanent magnet swing part swings back for the coil produces the signal of telecommunication, make electromagnetic induction coil produce the response voltage waveform when permanent magnet swing part swings back, set up threshold voltage through comparator converting circuit, filter the response voltage waveform signal to TTL level pulse signal is converted to with the response voltage waveform signal, and the singlechip receives TTL level pulse signal and judges whether to have the material; the capacitor is arranged to match with the drive square wave with adjustable period and pulse width sent by the single chip microcomputer, so that the drive square wave sent by the single chip microcomputer can be filtered, the triode can work stably, and the dual functions of interference resistance and current detection integration are achieved; the direct-current power supply reverse connection prevention circuit can prevent the power supply polarity from being connected in a wrong way to burn out each device; through comparator threshold adjustment circuit, adjust threshold voltage, adjust the utility model discloses an interference killing feature makes things convenient for the singlechip to carry out serial sampling simultaneously, and detection control is convenient nimble.
Drawings
Fig. 1 is a detection schematic diagram of a digital electromagnetic induction level detection device according to the present invention;
fig. 2 is a schematic structural diagram of the digital electromagnetic induction level detecting device of the present invention.
In the figure: 1. a housing; 2. an electronic module; 3. an electromagnetic induction coil; 4. a permanent magnet oscillating member; 5. a hanging member; 201. a circuit for preventing the reverse connection of the direct current power supply; 202. a single chip microcomputer; 203. a triode; 204. a capacitor; 205. a comparator conversion circuit; 206. a signal output interface circuit; 207. a comparator threshold adjustment circuit; 208. a resistance; 209. a data transmission interface circuit; 401. a permanent magnet pendulum bob; 402. a swing rod; 501. a support; 502. a lifting ring.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
As shown in fig. 1 and 2, the utility model provides a digital electromagnetic induction level detection device, which comprises a housing 1, an electronic module 2, an electromagnetic induction coil 3, a permanent magnet swinging component 4, and a hanging component 5 for hanging the permanent magnet swinging component 4, wherein the electronic module 2 and the electromagnetic induction coil 3 are respectively arranged in the housing;
the hanging part 5 is arranged on the shell 1, and hangs the permanent magnet swinging part 4 on one side of the electromagnetic induction coil 3, so that the permanent magnet swinging part 4 is driven to swing outwards when the electromagnetic induction coil 3 is electrified;
the electronic module 2 comprises a direct current power supply reverse connection prevention circuit 201, a single chip microcomputer 202, a triode 203, a capacitor 204, a comparator conversion circuit 205 and a signal output interface circuit 206;
the direct-current power supply reverse connection prevention circuit 201 is respectively connected to the electromagnetic induction coil 3, the single chip microcomputer 202, the signal output interface circuit 206 and the comparator conversion circuit 205;
the single chip microcomputer 202 is respectively connected to the comparator conversion circuit 205, the signal output interface circuit 206 and the B pole of the triode 203; the C pole of the triode 203 is connected to the electromagnetic induction coil 3, the E pole of the triode 203 is grounded, and two ends of the capacitor 204 are respectively connected to the C pole and the E pole of the triode 203.
The single chip microcomputer 202 is respectively connected to the comparator conversion circuit 205, the signal output interface circuit 206 and the B pole of the triode 203;
the C pole of the triode 203 is connected to the electromagnetic induction coil 3, and the E pole of the triode 203 is grounded;
one end of the capacitor 204 is connected to the electromagnetic induction coil 3, and the other end of the capacitor 204 is grounded;
the comparator switching circuit 205 is connected to the electromagnetic induction coil 3.
According to the above technical scheme, the utility model provides a digital detection scheme, its working process is as follows: the external direct current power supply is connected into the direct current power supply reverse connection prevention circuit 201, so that the single chip microcomputer 202 generates periodic square wave signals to control the triode 203 to work, and the triode 203 is instantly conducted to drive the permanent magnet swinging component 4 to swing outwards when the electromagnetic induction coil 3 is electrified; when the triode 203 is powered off, the permanent magnet swinging component 4 swings back, and when the permanent magnet swinging component 4 swings back, magnetic cutting is performed on the electromagnetic induction coil 3, so that the electromagnetic induction coil 3 generates induction current, the induction current is converted into a voltage waveform signal through the integral effect of the capacitor 204, the induction voltage waveform is filtered through the threshold voltage of the comparator conversion circuit 205, the induction voltage waveform signal is converted into a TTL level pulse signal, and the single chip microcomputer 202 receives the TTL level pulse signal to judge whether materials exist or not.
In the working process, the direct-current power supply reverse connection prevention circuit 201 is arranged, so that the detection circuit system cannot be burnt out and can normally work when the positive electrode and the negative electrode of direct-current power supply are reversely connected, the risk of equipment damage is reduced, and the problem of reverse connection of the power supply does not need to be considered in the actual use process; capacitor 204's setting matches cycle and the adjustable drive square wave of pulsewidth that singlechip 202 sent can realize right like this the drive square wave that singlechip 202 sent carries out the filtering, makes triode 203 steady operation has anti-interference and current detection total mark dual function, passes through total mark conversion voltage with the induced current of coil, realizes the reinforcing the utility model discloses an interference immunity.
As shown in fig. 1, the utility model discloses a realize better filter effect, improve the utility model discloses an interference immunity, electronic module 2 still includes comparator threshold adjustment circuit 206, comparator threshold adjustment circuit 207 is connected to comparator converting circuit 205. According to the scheme, through the adjustable threshold voltage of comparator threshold adjustment circuit 207, can be with like this the utility model discloses adjust to best anti-interference ability, it is also more convenient simultaneously singlechip 202 carries out serial sampling, makes the convenient flexibility of detection control.
As shown in fig. 1, in order to realize the stable operation of the triode 203, the single chip microcomputer 202 is connected to a resistor 208 is connected in series between the circuits of the B pole of the triode 203, the resistor 208 is used as a pull-down resistor, and the voltage division and current limitation of the triode 203 can be realized.
As shown in fig. 1, in addition, in order to facilitate the firmware upgrade of the single chip microcomputer, the electronic module of the present invention further includes a data transmission interface circuit 209, and the data transmission interface circuit 209 is connected to the single chip microcomputer 202.
As shown in fig. 2, the following is a preferable arrangement manner of the hanging part 5 and the permanent magnet swinging part 4 in an actual working scene, where the hanging part 5 includes a bracket 501 and a hanging ring 502, the bracket 501 is provided with a first hanging hole, the permanent magnet swinging part 4 is composed of a permanent magnet pendulum 401 and a pendulum rod 402, the permanent magnet pendulum 401 is arranged at one end of the pendulum rod 402, the other end of the pendulum rod 402 is provided with a second hanging hole, and the hanging ring 502 passes through the first hanging hole and the second hanging hole respectively to hang the permanent magnet pendulum 401 on one side of the electromagnetic induction coil 3.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.
Claims (5)
1. A digital electromagnetic induction level detection device comprises a shell, an electromagnetic induction coil, an electronic module, a permanent magnet swinging component and a hanging component for hanging the permanent magnet swinging component, wherein the electronic module and the electromagnetic induction coil are respectively arranged in the shell;
the hanging part is arranged on the shell, and hangs the permanent magnet swinging part on one side of the electromagnetic induction coil, so that the permanent magnet swinging part is driven to swing outwards when the electromagnetic induction coil is electrified;
the method is characterized in that: the electronic module comprises a direct current power supply reverse connection prevention circuit, a singlechip, a triode, a capacitor, a comparator conversion circuit and a signal output interface circuit,
wherein,
the direct-current power supply reverse connection prevention circuit is respectively connected to the single chip microcomputer, the electromagnetic induction coil, the signal output interface circuit and the comparator conversion circuit;
the single chip microcomputer is respectively connected to the comparator conversion circuit, the signal output interface circuit and the B pole of the triode;
the C pole of the triode is connected to the electromagnetic induction coil, and the E pole of the triode is grounded;
one end of the capacitor is connected to the electromagnetic induction coil, and the other end of the capacitor is grounded;
the comparator switching circuit is connected to the electromagnetic induction coil.
2. The digital electromagnetic induction level sensing apparatus of claim 1, wherein: the electronic module further includes a comparator threshold adjustment circuit coupled to the comparator switching circuit.
3. The digital electromagnetic induction level sensing apparatus of claim 2, wherein: and a resistor is connected in series between the circuit of the B pole of the triode and the singlechip.
4. The digital electromagnetic induction level sensing apparatus of claim 3, wherein: the electronic module further comprises a data transmission interface, and the data transmission interface is connected to the single chip microcomputer.
5. The digital electromagnetic induction level sensing device according to any one of claims 1 to 4, wherein:
the hanging part comprises a bracket and a hanging ring, and the bracket is provided with a first hanging hole;
the permanent magnet swinging component consists of a permanent magnet pendulum bob and a swinging rod, the permanent magnet pendulum bob is arranged at one end of the swinging rod, and a second hanging hole is formed in the other end of the swinging rod;
the hanging ring penetrates through the first hanging hole and the second hanging hole respectively to hang the permanent magnet pendulum bob on one side of the electromagnetic induction coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621077648.XU CN206057596U (en) | 2016-09-23 | 2016-09-23 | A kind of digital electric magnetic induction Level measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621077648.XU CN206057596U (en) | 2016-09-23 | 2016-09-23 | A kind of digital electric magnetic induction Level measurement device |
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| Publication Number | Publication Date |
|---|---|
| CN206057596U true CN206057596U (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621077648.XU Expired - Fee Related CN206057596U (en) | 2016-09-23 | 2016-09-23 | A kind of digital electric magnetic induction Level measurement device |
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| CN (1) | CN206057596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020094114A1 (en) * | 2018-11-09 | 2020-05-14 | 湖南信量电子有限公司 | Action mechanism for object detection and object detection device |
-
2016
- 2016-09-23 CN CN201621077648.XU patent/CN206057596U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020094114A1 (en) * | 2018-11-09 | 2020-05-14 | 湖南信量电子有限公司 | Action mechanism for object detection and object detection device |
| JP2022508875A (en) * | 2018-11-09 | 2022-01-19 | 湖南信量電子有限公司 | Operation mechanism and object detection device for object detection |
| EP3879241A4 (en) * | 2018-11-09 | 2022-07-20 | Hunan Xinliang Electronic Co., Ltd | Action mechanism for object detection and object detection device |
| JP7302128B2 (en) | 2018-11-09 | 2023-07-04 | 湖南信量電子有限公司 | Motion mechanism and object detection device for object detection |
| US12040132B2 (en) | 2018-11-09 | 2024-07-16 | Hunan Xinliang Electronic Co., Ltd | Actuating mechanism for object detection and object detection device |
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Granted publication date: 20170329 |