CN201674477U - Underground non-contact magnetic sensitive switch circuit - Google Patents
Underground non-contact magnetic sensitive switch circuit Download PDFInfo
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- CN201674477U CN201674477U CN2010202175313U CN201020217531U CN201674477U CN 201674477 U CN201674477 U CN 201674477U CN 2010202175313 U CN2010202175313 U CN 2010202175313U CN 201020217531 U CN201020217531 U CN 201020217531U CN 201674477 U CN201674477 U CN 201674477U
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Abstract
The utility model discloses an underground non-contact magnetic sensitive switch circuit. A prior switch is interfered by the external, and has low reliability. The underground non-contact magnetic sensitive switch circuit comprises a first current-limiting resistance R2, a second current-limiting resistance R2, a third current-limiting resistance R3, a pull-up resistance R4, an amplification resistance R5, a first matching resistance R6, a second matching resistance R7, a first matching resistance R8, a first filter capacitor C1, a second filter capacitor C2, a first filter capacitor C3, a fourth filter capacitor C4, a fifth filter capacitor C5, a first pin header P1, a second pin heater P2, a voltage reference diode D1, an instrument amplifier U1, a voltage comparator U2, a phase inverter U3 and a giant magnet resistance sensor chip, wherein a signal amplification module is formed by the instrument amplifier U1, and the giant magnet resistance sensor chip outputs difference signals, which is compared with reference voltage after being amplified by the signal amplification module. The underground non-contact magnetic sensitive switch circuit has the characteristics of non-magnetic severe environment resistance, long service life and low production cost.
Description
Technical field
The utility model belongs to field of engineering technology under the ocean water, is specifically related to a kind of circuit of non-contact switch under water based on giant magneto-resistance sensor.
Background technology
All be widely used in Aeronautics and Astronautics technology, industrial production control, daily life etc. near switch.Along with the development of seafari technology, Underwater Engineering operation, switching technique has progressively been pushed the control application of underwater units such as ocean to from land sky application.According to the different principle of transducer, common having near switch is following several: 1, eddy current type also is inductance approach switch near switch, and identification has or not metal object approaching.2, capacitive approach switch, inspected object is not limited to metallic conductor, can be the liquid or the powdery object of insulation, but is not suitable for the switch control of underwater units.3, proximity Hall switch, Hall element are a kind of magneto sensors, the switch that utilizes Hall element to make.Often has only 1～2 centimetre but the inductive switching distance is short.4, photoelectric type is near switch, the switch that utilizes photoelectric effect to make.But applied environment is had relatively high expectations, and is not suitable for underwater environment.5, the pyroelectricity formula is the switch made from the element that sense temperature changes near switch, and target is the object different with ambient temperature.6, other pattern near switch, as ultrasonic wave near switch, microwave near switch etc., sonar and radar utilize the principle of this effect to make.But the control of the equipment that is not suitable for fluctuating in the water.
Under water in the adverse circumstances, the underwater operation equipment fluctuates in ocean etc., and destabilizing factors such as interference are stronger, and the control switch stability requirement of equipment is also higher.The magnetosensitive switch can not be subjected to the influence to Magnetic Sensor such as seawater, can well be used in water.
Summary of the invention
The purpose of this utility model is exactly in order to solve the switch control problem of working equipment in the adverse circumstances under water, a kind of magnetosensitive of noncontact under water switching circuit to be provided.
The utility model realizes that the technical scheme that above-mentioned purpose is taked is:
A kind of magnetosensitive of noncontact under water switching circuit comprises the first current-limiting resistance R1, the second current-limiting resistance R2, the 3rd current-limiting resistance R3, pull-up resistor R4, amplify resistance R 5, the first build-out resistor R6, the second build-out resistor R7, the 3rd build-out resistor R8, the first filter capacitor C1, the second filter capacitor C2, the 3rd filter capacitor C3, the 4th filter capacitor C4, the 5th filter capacitor C5, first row's pin P1, second row's pin P2, voltage reference diode D1, instrumentation amplifier U1, voltage comparator U2, inverter U3 and giant magneto-resistance sensor chip.
1 pin of giant magneto-resistance sensor chip is connected with 2 pin with 1 pin of first row's pin P1 respectively with 4 pin, and 8 pin of giant magneto-resistance sensor chip are connected with 2 pin with 1 pin of second row's pin P2 respectively with 5 pin; 1 pin of first row's pin P1 is connected with 2 pin of instrumentation amplifier U1, the 2 pin ground connection of first row's pin P1, and 1 pin of second row's pin P2 connects the anode of the 3rd filter capacitor C3, and 2 pin of second row's pin P2 are connected with 3 pin of instrumentation amplifier U1;
1 pin of instrumentation amplifier U1 is connected with an end that amplifies resistance R 5, and the other end of amplification resistance R 5, the end of the 4th filter capacitor C4 are connected with 8 pin of instrumentation amplifier U1; 4 pin of instrumentation amplifier U1 and 5 pin ground connection, the end of another termination first build-out resistor R6 of 6 pin of instrumentation amplifier U1, the 4th filter capacitor C4.The reverse input end of another termination voltage comparator U2 of the first build-out resistor R6, the positive input of the termination voltage comparator U2 of the end of the second build-out resistor R7, the 3rd build-out resistor R8, the anode of the termination voltage reference diode D1 of the positive pole of the other end of the second build-out resistor R7, the 5th filter capacitor C5, the 3rd current-limiting resistance R3, the negativing ending grounding of voltage reference diode D1, the minus earth of the 5th filter capacitor C5.The positive pole of a termination first filter capacitor C1 of the end of 7 pin of the other end of the 3rd current-limiting resistance R3, instrumentation amplifier U1, the first current-limiting resistance R1, the second current-limiting resistance R2; The minus earth of the first filter capacitor C1.
1 pin of the other end of the first current-limiting resistance R1, second row's pin P2 connects the anode of the 3rd filter capacitor C3; The end of the power end of the positive pole of the other end of the second current-limiting resistance R2, the second filter capacitor C2, voltage comparator U2, pull-up resistor R4,14 pin of inverter U3 connect+the 5V power supply, the minus earth of the second filter capacitor C2, the earth terminal ground connection of voltage comparator U2,1 pin and 2 pin of the output termination inverter U3 of the other end of the other end of pull-up resistor R4, the 3rd build-out resistor R8, voltage comparator U2; 3 pin of inverter U3 are the output of switching circuit, the 7 pin ground connection of inverter U3, and other pin of inverter U3 is unsettled.
Design principle of the present utility model: this switching circuit can be divided into magneto-dependent sensor, signal amplification module, comparator, inverter.Wherein magneto-dependent sensor adopts the giant magneto-resistance sensor chip, the signal amplification module mainly is made of instrumentation amplifier U1, the signal of magneto-dependent sensor output is a differential signal, after amplifying, the signal amplification module compares with reference voltage+2.5V, if the amplification module output voltage is greater than+2.5V, comparator output low level then, otherwise output high level, in order to be complementary, introduce inverter with follow-up device drives voltage.
The beneficial effect that the utility model had: because the utility model utilizes giant magnetoresistance effect, the employing giant magneto-resistance sensor is an inductor, and its changes of magnetic field to external world has high sensitivity, can realize the control of high accuracy switch.The utlity model has anti-non magnetic adverse circumstances, long service life, characteristics that production cost is low, therefore distance of reaction comprises sea, land and sky in some field much larger than Hall switch, can replace uses such as proximity Hall switch.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model;
Fig. 2 is an application exemplary plot of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of magnetosensitive of noncontact under water switching circuit comprises the first current-limiting resistance R1, the second current-limiting resistance R2, the 3rd current-limiting resistance R3, pull-up resistor R4, amplify resistance R 5, the first build-out resistor R6, the second build-out resistor R7, the 3rd build-out resistor R8, the first filter capacitor C1, the second filter capacitor C2, the 3rd filter capacitor C3, the 4th filter capacitor C4, the 5th filter capacitor C5, first row's pin P1, second row's pin P2, voltage reference diode LM336Z2.5, instrumentation amplifier AMP04FS, voltage comparator LM393, inverter 74LS00 and giant magneto-resistance sensor chip AAH002-02.
1 pin of giant magneto-resistance sensor chip is connected with 2 pin with 1 pin of first row's pin P1 respectively with 4 pin, and 8 pin of giant magneto-resistance sensor chip are connected with 2 pin with 1 pin of second row's pin P2 respectively with 5 pin; 1 pin of first row's pin P1 is connected with 2 pin of instrumentation amplifier, the 2 pin ground connection of first row's pin P1, and 1 pin of second row's pin P2 connects the anode of the 3rd filter capacitor C3, and 2 pin of second row's pin P2 are connected with 3 pin of instrumentation amplifier;
1 pin of instrumentation amplifier is connected with an end that amplifies resistance R 5, and the other end of amplification resistance R 5, the end of the 4th filter capacitor C4 are connected with 8 pin of instrumentation amplifier; 4 pin of instrumentation amplifier and 5 pin ground connection, the end of another termination first build-out resistor R6 of 6 pin of instrumentation amplifier, the 4th filter capacitor C4.The reverse input end of another termination voltage comparator of the first build-out resistor R6, the positive input of the termination voltage comparator of the end of the second build-out resistor R7, the 3rd build-out resistor R8, the anode of the termination voltage reference diode of the positive pole of the other end of the second build-out resistor R7, the 5th filter capacitor C5, the 3rd current-limiting resistance R3, the negativing ending grounding of voltage reference diode, the minus earth of the 5th filter capacitor C5.The positive pole of a termination first filter capacitor C1 of the end of 7 pin of the other end of the 3rd current-limiting resistance R3, instrumentation amplifier, the first current-limiting resistance R1, the second current-limiting resistance R2; The minus earth of the first filter capacitor C1.
1 pin of the other end of the first current-limiting resistance R1, second row's pin P2 connects the anode of the 3rd filter capacitor C3; The end of the positive pole of the other end of the second current-limiting resistance R2, the second filter capacitor C2, the power end of voltage comparator, pull-up resistor R4,14 pin of inverter connect+the 5V power supply, the minus earth of the second filter capacitor C2, the earth terminal ground connection of voltage comparator, 1 pin and 2 pin of the output termination inverter of the other end of the other end of pull-up resistor R4, the 3rd build-out resistor R8, voltage comparator; 3 pin of inverter are the output of switching circuit, 7 pin ground connection of inverter, and other pin of inverter is unsettled.
As shown in Figure 2, noncontact magnetosensitive switching circuit 3 is arranged in the upper glass steel 4 under water, last induction coil 5 in the upper glass steel 4 can be responded to lower-glass steel 6 interior induction coils down 7, lower-glass steel 6 surfaces are embedded with cylinder magnet, communication equipment 2 in noncontact magnetosensitive switching circuit 3 and the ball float 1 is connected under water, and following induction coil 7 is connected with underwater installation 8 on being arranged on anchor chain 9.Fixed mass piece 10 is equipped with in the lower end of anchor chain 9.
The concrete course of work: after data acquisition finishes under water, underwater installation 8 is along anchor chain 9 come-ups, drive lower-glass steel 6 come-ups, in the magnetosensitive of noncontact under water switching circuit 3 induction ranges in entering upper glass steel 4, this moment is noncontact magnetosensitive switching circuit 3 output high level under water, trigger the communication equipment 2 in the ball float 1, make its work.When underwater installation 8 sinks along anchor chain 9, driving lower-glass steel 6 sinks, the magnetosensitive of noncontact under water switching circuit 3 induction ranges in leaving upper glass steel 4, noncontact magnetosensitive switching circuit 3 output low levels under water, the communication equipment 2 in the ball float 1 enters resting state.
The described just the most basic structure situation of this utility model; its novelty is to realize the purpose of the noncontact magnetosensitive switch of this particular surroundings under water to communication equipment control, and any submerged applications that builds on the magnetic design basis all is construed as the row in this patent protection.
Claims (1)
1. noncontact magnetosensitive switching circuit under water, comprise the first current-limiting resistance R1, the second current-limiting resistance R2, the 3rd current-limiting resistance R3, pull-up resistor R4, amplification resistance R 5, the first build-out resistor R6, the second build-out resistor R7, the 3rd build-out resistor R8, the first filter capacitor C1, the second filter capacitor C2, the 3rd filter capacitor C3, the 4th filter capacitor C4, the 5th filter capacitor C5, first row's pin P1, second row's pin P2, voltage reference diode D1, instrumentation amplifier U1, voltage comparator U2, inverter U3 and giant magneto-resistance sensor chip, it is characterized in that:
1 pin of giant magneto-resistance sensor chip is connected with 2 pin with 1 pin of first row's pin P1 respectively with 4 pin, and 8 pin of giant magneto-resistance sensor chip are connected with 2 pin with 1 pin of second row's pin P2 respectively with 5 pin; 1 pin of first row's pin P1 is connected with 2 pin of instrumentation amplifier U1, the 2 pin ground connection of first row's pin P1, and 1 pin of second row's pin P2 connects the anode of the 3rd filter capacitor C3, and 2 pin of second row's pin P2 are connected with 3 pin of instrumentation amplifier U1;
1 pin of instrumentation amplifier U1 is connected with an end that amplifies resistance R 5, and the other end of amplification resistance R 5, the end of the 4th filter capacitor C4 are connected with 8 pin of instrumentation amplifier U1; 4 pin of instrumentation amplifier U1 and 5 pin ground connection, the end of another termination first build-out resistor R6 of 6 pin of instrumentation amplifier U1, the 4th filter capacitor C4; The reverse input end of another termination voltage comparator U2 of the first build-out resistor R6, the positive input of the termination voltage comparator U2 of the end of the second build-out resistor R7, the 3rd build-out resistor R8, the anode of the termination voltage reference diode D1 of the positive pole of the other end of the second build-out resistor R7, the 5th filter capacitor C5, the 3rd current-limiting resistance R3, the negativing ending grounding of voltage reference diode D1, the minus earth of the 5th filter capacitor C5; The positive pole of a termination first filter capacitor C1 of the end of 7 pin of the other end of the 3rd current-limiting resistance R3, instrumentation amplifier U1, the first current-limiting resistance R1, the second current-limiting resistance R2; The minus earth of the first filter capacitor C1;
1 pin of the other end of the first current-limiting resistance R1, second row's pin P2 connects the anode of the 3rd filter capacitor C3; The end of the power end of the positive pole of the other end of the second current-limiting resistance R2, the second filter capacitor C2, voltage comparator U2, pull-up resistor R4,14 pin of inverter U3 connect+the 5V power supply, the minus earth of the second filter capacitor C2, the earth terminal ground connection of voltage comparator U2,1 pin and 2 pin of the output termination inverter U3 of the other end of the other end of pull-up resistor R4, the 3rd build-out resistor R8, voltage comparator U2; 3 pin of inverter U3 are the output of switching circuit, the 7 pin ground connection of inverter U3, and other pin of inverter U3 is unsettled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202175313U CN201674477U (en) | 2010-06-04 | 2010-06-04 | Underground non-contact magnetic sensitive switch circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202175313U CN201674477U (en) | 2010-06-04 | 2010-06-04 | Underground non-contact magnetic sensitive switch circuit |
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| CN201674477U true CN201674477U (en) | 2010-12-15 |
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| CN2010202175313U Expired - Fee Related CN201674477U (en) | 2010-06-04 | 2010-06-04 | Underground non-contact magnetic sensitive switch circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808352A (en) * | 2012-11-15 | 2014-05-21 | 中国科学院沈阳自动化研究所 | Underwater appendage separation detecting device |
| CN104019847A (en) * | 2014-06-27 | 2014-09-03 | 上海海事大学 | Underwater noncontact type separation detection device |
-
2010
- 2010-06-04 CN CN2010202175313U patent/CN201674477U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808352A (en) * | 2012-11-15 | 2014-05-21 | 中国科学院沈阳自动化研究所 | Underwater appendage separation detecting device |
| CN104019847A (en) * | 2014-06-27 | 2014-09-03 | 上海海事大学 | Underwater noncontact type separation detection device |
| CN104019847B (en) * | 2014-06-27 | 2016-08-24 | 上海海事大学 | A kind of underwater non-contact type separation detecting device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20130604 |