CN209676207U - A kind of magnetic induction electronic bistable switch - Google Patents
A kind of magnetic induction electronic bistable switch Download PDFInfo
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- CN209676207U CN209676207U CN201920747598.9U CN201920747598U CN209676207U CN 209676207 U CN209676207 U CN 209676207U CN 201920747598 U CN201920747598 U CN 201920747598U CN 209676207 U CN209676207 U CN 209676207U
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Abstract
The utility model discloses a kind of magnetic induction electronic bistable switches, including shell, capping and Magnetic testi module, installation cavity is offered in shell, Magnetic testi module is fixedly mounted in installation cavity, in capping insertion installation cavity, Magnetic testi module includes commutating circuit, voltage regulator circuit and detection circuit, commutating circuit is used to convert the direction of input current and transformed electric energy is supplied voltage regulator circuit, detection circuit, the electric energy of voltage regulator circuit exchange backward carries out pressure stabilizing transformation and transformed electric energy is supplied to detection circuit, detection circuit is for detecting the polarity across the magnetic field of detection circuit；Advantage is in the installation cavity that Magnetic testi module is fixedly mounted inside housings, and installation cavity can effectively prevent dust to enter in installation cavity by lidstock fixation, effectively slows down the aging of Magnetic testi module.And tunnel magnetoresistive chip can still detect the variation in magnetic field under power-down conditions and provide correct location status after ensuring service restoration, improve the reliability of magnetic induction electronic bistable switch.
Description
Technical field
The present invention relates to electromagnetic switch fields, and in particular to a kind of magnetic induction electronic bistable switch.
Background technique
It can all be detected in place to whether it runs in intelligent door and window and lift car operational process, use machinery
When limit switch is limited, mechanical switch can be because frequently working due to aged deterioration, so that it can not do the operation of door and window
Response accurately and timely out.Existing apply mostly uses in intelligent door and window and the stable state of lift car stroke detection switch by doing
The stable state switch that reed pipe is constituted, the stable state switch that tongue tube is constituted need to accomplish when in use effective shockproof, therefore it is to ring
Border it is more demanding, and the probability that while working under low-temperature condition breaks down is larger.Existing stable state switch is using simultaneously
When need to pay attention to power supply line positive and negative anodes wiring it is whether correct, when positive and negative anodes wiring error, will lead to the circuit of control stable state switch
Otherwise damage enters it simultaneously because stable state switch can expose in air when using therefore need to accomplish dust-proof and waterproof
In dust it is easier that electronic component accelerated ageing.
Summary of the invention
The technical problems to be solved by the present invention are: provide it is a kind of can dust-proof and input terminal positive-negative connected can magnetic induction electricity
Sub- bistable switch.
The technical scheme of the invention to solve the technical problem is: a kind of magnetic induction electronic bistable switch, including
Shell, capping and Magnetic testi module, installation cavity is offered in the shell, and the Magnetic testi module is fixedly mounted on described
Installation cavity in, in the described capping insertion installation cavity, the Magnetic testi module includes commutating circuit, voltage regulator circuit
And detection circuit, the commutating circuit be used for convert input current direction and by transformed electric energy supply voltage regulator circuit,
Detection circuit, the electric energy of the voltage regulator circuit exchange backward carry out pressure stabilizing transformation and transformed electric energy are supplied to detection electricity
Road, the detection circuit is for detecting the polarity across the magnetic field of detection circuit.
Preferably, the side portion of the shell is provided with multiple fixation holes, and multiple fixation holes are along the shell
The length direction of body is uniformly distributed.
Preferably, the front end of the shell offers mounting groove, and the mounting groove is connected with the installation cavity,
Connecting terminal is provided in the mounting groove, the connecting terminal is electrically connected with the Magnetic testi module.
Preferably, the commutating circuit is full bridge rectifier.
Preferably, the voltage regulator circuit is made of linear voltage regulator and filter capacitor, and the filter capacitor was used for
Filter the voltage of linear voltage regulator input terminal input and the voltage of output end output.
Preferably, the detection circuit include magnetoresistive sensor, first resistor, the first triode, first diode and
Second triode constitute, one end of the first resistor, the first triode emitter with commutating circuit output end just
Pole electrical connection, the other end of first resistor are electrically connected with the anode of the base stage of the first triode, first diode, the one or two pole
The cathode of pipe is electrically connected with the collector of the second triode, and the emitter of the second triode and the output end of magnetoresistive sensor are electrically connected
It connects, the base stage of the second triode, the anode of magnetoresistive sensor are electrically connected with the output end of voltage regulator circuit, the one or three pole
The collector of pipe, the cathode of magnetoresistive sensor, voltage regulator circuit cathode be electrically connected with the cathode of commutating circuit output end.
Preferably, the magnetoresistive sensor is tunnel magnetoresistive chip, concrete model TMR1212.
Compared with prior art, it is an advantage of the invention that Magnetic testi module is fixedly mounted in installation cavity inside housings,
And installation cavity can effectively prevent dust to enter in installation cavity by lidstock fixation, to effectively slow down Magnetic testi module
Aging.After the tunnel magnetoresistive chip used simultaneously can still detect the variation in magnetic field under power-down conditions and ensure service restoration
Correct location status is provided, the reliability of magnetic induction electronic bistable switch is improved.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the housing interior structure schematic diagram of the utility model；
Fig. 3 is the circuit connection block diagram of the Magnetic testi module of the utility model；
Fig. 4 is the connection schematic diagram of the commutating circuit of the utility model；
Fig. 5 is the connection schematic diagram of the voltage regulator circuit of the utility model；
Fig. 6 is the connection schematic diagram of the detection circuit of the utility model.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
A kind of magnetic induction electronic bistable switch, including shell 1, capping 2 and Magnetic testi module 3 offer installation in shell 1
Chamber 4, Magnetic testi module 3 are fixedly mounted in installation cavity 4, and in 2 sealing insertion installation cavity 4 of capping, Magnetic testi module 3 includes commutation
Circuit, voltage regulator circuit and detection circuit, commutating circuit are used to convert the direction of input current and supply transformed electric energy steady
Volt circuit, detection circuit, the electric energy of voltage regulator circuit exchange backward carry out pressure stabilizing transformation and transformed electric energy are supplied to detection
Circuit, detection circuit is for detecting the polarity across the magnetic field of detection circuit.Wherein commutating circuit is full bridge rectifier, commutation
Two input terminals of device circuit are electrically connected with first input end and the second input terminal respectively.
Voltage regulator circuit is made of linear voltage regulator U2 and filter capacitor, and filter capacitor is for filtering linear voltage regulator U2 input
Hold input voltage and output end output voltage, wherein linear voltage regulator U2 by model HT7125 linear regulator chip structure
At the anode of linear regulator chip is electrically connected with the positive VCC of commutating circuit output end, the cathode of linear regulator chip and commutation
The cathode of circuit output end is electrically connected, and filter capacitor includes first capacitor C1 and the second capacitor C2, one end of first capacitor C1 with
The anode electrical connection of linear regulator chip, one end of the second capacitor C2 are electrically connected with the output end of linear regulator chip, the first electricity
The other end of the other end, the second capacitor C2 that hold C1 is electrically connected with the cathode of linear regulator chip, while linear regulator chip
Output end used as the output end VDD of voltage regulator circuit.
Detection circuit includes magnetoresistive sensor U1, first resistor R1, the first triode Q1, first diode D1 and the two or three
Pole pipe Q2 is constituted, one end of first resistor R1, the first triode Q1 anode of the emitter with commutating circuit output end be electrically connected
It connects, the other end of first resistor R1 is electrically connected with the anode of the base stage of the first triode Q1, first diode D1, the one or two pole
The cathode of pipe D1 is electrically connected with the collector of the second triode Q2, and the emitter of the second triode Q2 is defeated with magnetoresistive sensor U1's
Outlet electrical connection, the base stage of the second triode Q2, the anode of magnetoresistive sensor U1 are electrically connected with circuit output end of pressure-stabilizing, and first
The collector of triode Q1, the cathode of magnetoresistive sensor U1, voltage regulator circuit negative electricity of the cathode with commutating circuit output end
Connection, wherein magnetoresistive sensor U1 is tunnel magnetoresistive chip, concrete model TMR1212；First triode Q1 is three pole of positive-negative-positive
Pipe, the second triode Q2 are NPN type triode.
The side portion of shell 1 is provided with 4 fixation holes, 5,4 fixation holes 5 and is uniformly distributed along the length direction of shell 1.Shell
The front end of body 1 offers mounting groove 6, and mounting groove 6 is connected with installation cavity 4, and 2 connecting terminals 7 are provided in mounting groove 6, are changed
Pass through the first input end P1 being arranged on connecting terminal 7 and microcontroller, second defeated respectively to two input terminals of device circuit
Enter the electrical connection of terminals P 2, microcontroller is that Magnetic testi module 3 provides electric energy by first input end, the second input terminal, together
When microcontroller detection first input end, the second input terminal voltage detect the switch state of the design, and according to opening
Off status is further operated.
The commutating circuit, voltage regulator circuit and detection circuit of the utility model are integrated on pcb board, and pcb board is examined as magnetic
It surveys module to use, while the pcb board that pcb board makes by pouring into insulation sealing in sealing adhesive process, that is, phase installation cavity is fixed on installation cavity
It is interior, then capping is fixed on pcb board and is mutually sealed with the side wall of installation cavity.
The course of work of the utility model: the cooperation by bolt and fixation hole 5 is that shell 1 is fixedly mounted on door and window,
Connecting terminal 7 is electrically connected by conducting wire with first input end, the second input terminal on microcontroller, and is Magnetic testi mould
Block 3 provides electric energy, is input to the electric energy of Magnetic testi module 3 by there is the commutation of full bridge rectifier composition by connecting terminal 7
The transformation of circuit, so that the electric current of the electric energy of input enters voltage regulator circuit and detection circuit along assigned direction, electric energy is entered
It is filtered while voltage regulator circuit by first capacitor C1, the electric energy after the completion of filtering is transformed to 2.5V electricity by linear regulator chip
The tunnel magnetoresistive chip that can be supplied in detection circuit uses.Specific detection process is, when magnetic element passes through magnetoresistive sensor U1
When make magnetic field inside magnetoresistive sensor U1 that transformation occur to make to hinder sensor internal resistance and change, and then control magnetic
Hinder the turn-on and turn-off of sensor U1.When magnetoresistive sensor U1 is in an off state, the output end of magnetoresistive sensor U1 be its just
Pole tension, due to the second triode Q2 base stage and emitter voltage difference be 0, the second triode Q2 cut-off, and at this time by
D1 diode and the are connect and passed through by the anode of first resistor R1 and commutating circuit output end in the first triode Q1 base stage
The connection of two triode Q2 collectors, the emitter of the first triode Q1 and commutating circuit output end it is positive connect, the one or three pole
The collector of pipe Q1 is connect with the cathode of commutating circuit output end, and Q1 base stage is high level, therefore the first triode Q1 keeps cutting
Only state.When magnetoresistive sensor U1 is in the conductive state, the output end of magnetoresistive sensor U1 is connected with its cathode, therefore the two or three
Pole pipe Q2 conducting, the other end of first resistor R1 are negative by first diode D1, the second triode Q2 and magnetoresistive sensor U1's
Pole electrical connection, therefore the base stage of the first triode Q1 is low level, the first triode Q1 is tended to remain on, and is originally set to realize
Count the "ON" or "Off" of magnetic induction electronic bistable switch.
Claims (7)
1. a kind of magnetic induction electronic bistable switch, which is characterized in that including shell, capping and Magnetic testi module, the shell
Installation cavity is inside offered, the Magnetic testi module is fixedly mounted in the installation cavity, described in the capping insertion
In installation cavity, the Magnetic testi module includes commutating circuit, voltage regulator circuit and detection circuit, and the commutating circuit is for becoming
It changes the direction of input current and transformed electric energy is supplied into voltage regulator circuit, detection circuit, the voltage regulator circuit exchange is backward
Electric energy carry out pressure stabilizing transformation and transformed electric energy be supplied to detection circuit, the detection circuit is for detecting across inspection
The polarity in the magnetic field of slowdown monitoring circuit.
2. a kind of magnetic induction electronic bistable switch as described in claim 1, which is characterized in that the side portion of the shell is set
Multiple fixation holes are equipped with, multiple fixation holes are uniformly distributed along the length direction of the shell.
3. a kind of magnetic induction electronic bistable switch as described in claim 1, which is characterized in that the front end of the shell opens up
There is mounting groove, the mounting groove is connected with the installation cavity, and connecting terminal is provided in the mounting groove, described
Connecting terminal is electrically connected with the Magnetic testi module.
4. a kind of magnetic induction electronic bistable switch as described in claim 1, which is characterized in that the commutating circuit is full-bridge
Rectification circuit.
5. a kind of magnetic induction electronic bistable switch as described in claim 1, which is characterized in that the voltage regulator circuit is by linear
Voltage-stablizer and filter capacitor are constituted, and the filter capacitor is used to filter the voltage and output end of linear voltage regulator input terminal input
The voltage of output.
6. a kind of magnetic induction electronic bistable switch as described in claim 1, which is characterized in that the detection circuit includes magnetic
Sensor, first resistor, the first triode, first diode and the second triode is hindered to constitute, one end of the first resistor,
The emitter of first triode is electrically connected with the anode of commutating circuit output end, the other end of first resistor and the first triode
Base stage, first diode anode be electrically connected, the cathode of first diode is electrically connected with the collector of the second triode, the
The emitter of two triodes is electrically connected with the output end of magnetoresistive sensor, the anode of the base stage of the second triode, magnetoresistive sensor
It is electrically connected with the output end of voltage regulator circuit, the collector of the first triode, the cathode of magnetoresistive sensor, voltage regulator circuit
Cathode be electrically connected with the cathode of commutating circuit output end.
7. a kind of magnetic induction electronic bistable switch as claimed in claim 6, which is characterized in that the magnetoresistive sensor is tunnel
Road magnetoresistive chip, concrete model TMR1212.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920747598.9U CN209676207U (en) | 2019-05-23 | 2019-05-23 | A kind of magnetic induction electronic bistable switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920747598.9U CN209676207U (en) | 2019-05-23 | 2019-05-23 | A kind of magnetic induction electronic bistable switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209676207U true CN209676207U (en) | 2019-11-22 |
Family
ID=68575401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920747598.9U Active CN209676207U (en) | 2019-05-23 | 2019-05-23 | A kind of magnetic induction electronic bistable switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209676207U (en) |
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2019
- 2019-05-23 CN CN201920747598.9U patent/CN209676207U/en active Active
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