CN205584164U - Hall proximity switch circuit - Google Patents

Abstract

The utility model relates to a switch circuit. The utility model provides a proximity switch voltage input scope narrower, can't be applied to different electrical power generating system simultaneously, so to many electrical power generating system, generally adopt the proximity switch of different models or increase interface circuit when selecting and satisfy system requirements to improve the complexity of system and manufacturing cost's problem, provide a hall proximity switch circuit, including first power input end VCC1, second source input VCC2, hall switch detection module, signal conditioning module and output unit, first power input end VCC1 be connected with hall switch detection module and signal conditioning module respectively, and hall switch detection module is connected with signal conditioning module and output unit respectively, and output unit and second source input VCC2 are connected. This circuit has characteristics such as wide input voltage scope, output driver ability reinforce. Be applicable to hall proximity switch.

Description

Proximity Hall switch circuit

Technical field

This utility model relates to on-off circuit, particularly to the on-off circuit of proximity Hall switch.

Background technology

Proximity Hall switch is a kind of magneto-dependent sensor utilizing Hall effect principle, can detect magnetic field and change thereof with it, can Use in the various long korneforos relevant with magnetic field, belong to the one of displacement transducer, be widely used.

Proximity Hall switch is for engine system, makees Rotating speed measring, has the features such as volume is little, precision is high, response is fast. Its operation principle is to utilize Hall effect, time physical quantity such as rotating speed and duty of non-electrical, non-magnetic changed, It is transformed into electricity detect and control.Proximity Hall switch output digital quantity, has contactless, without abrasion, output waveform Clearly, non-jitter, without advantages such as rebounds.

And at present proximity switch input voltage range the most on the market is narrower, it is impossible to apply simultaneously to different power-supply systems, thus right In multi-power system, typically use the proximity switch of different model when selecting or increase interface circuit to meet system requirements, from And improve complexity and the production cost of system.

Utility model content

Technical problem to be solved in the utility model, it is simply that provide a kind of proximity Hall switch circuit to realize improving input voltage Scope and the effect of output driving force.

This utility model solves described technical problem, employed technical scheme comprise that, proximity Hall switch circuit, including the first power supply Input, second source input, Hall switch detection module, Signal-regulated kinase and output unit, described first power supply is defeated Enter end be connected with Hall switch detection module and Signal-regulated kinase respectively, Hall switch detection module respectively with Signal-regulated kinase And output unit connects, output unit is connected with second source input.

Concrete, described Hall switch detection module includes electric capacity one and proximity Hall switch, one end of described electric capacity one respectively with The power input of the first power input, Signal-regulated kinase and proximity Hall switch connects, the other end of electric capacity one and Hall The ground end ground connection of proximity switch, the outfan of proximity Hall switch is connected with Signal-regulated kinase and output unit respectively.

Concrete, described Signal-regulated kinase includes resistance one, diode one and electric capacity two, and one end of resistance one is respectively with first Power input and Hall switch detection module connect, and the other end of resistance one is connected with the positive pole of diode one, diode one Negative pole one end with Hall switch detection module, output unit and electric capacity two respectively is connected, the other end ground connection of electric capacity two.

Further, described diode one is light emitting diode.

Concrete, described output unit includes resistance three and diode two, and one end of described resistance three is with second source input even Connecing, the other end of resistance three is connected with the positive pole of diode two, the negative pole of diode two respectively with Hall switch detection module and letter Number conditioning module connects.

Further, described diode two is germanium diode.

The beneficial effects of the utility model are: this circuit has wide input voltage range, exports the features such as driving force is strong.

Accompanying drawing explanation

Fig. 1 is the circuit theory diagrams of this utility model proximity Hall switch circuit embodiments；

Fig. 2 is the circuit structure diagram of this utility model proximity Hall switch circuit embodiments；

Wherein, resistance one R1, resistance two R2, resistance three R3, electric capacity one C1, electric capacity two C2, diode one D1, diode Two D2, proximity Hall switch IC1, first power input VCC1, second source input VCC2, the electricity of proximity Hall switch Source input 1, the outfan 2 of proximity Hall switch and the ground end 3 of proximity Hall switch.

Below in conjunction with the detailed description of the invention of embodiment, foregoing of the present utility model is described in further detail again.But This should not being interpreted as, the scope of the above-mentioned theme of this utility model is only limitted to Examples below.Without departing from the above-mentioned skill of this utility model Under the art state of mind, the various replacements made according to ordinary skill knowledge and customary means or change, all should be included in this In the range of utility model.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment describe in detail the technical solution of the utility model:

This utility model is narrower for proximity switch input voltage range of the prior art, it is impossible to apply simultaneously to different power supplys System, so for multi-power system, typically using the proximity switch of different model or increase interface circuit to meet when selecting System requirements, thus improve the complexity of system and the problem of production cost, it is provided that a kind of proximity Hall switch circuit, including First power input VCC1, second source input VCC2, Hall switch detection module, Signal-regulated kinase and output unit, Described first power input VCC1 is connected with Hall switch detection module and Signal-regulated kinase respectively, Hall switch detection module Being connected with Signal-regulated kinase and output unit respectively, output unit is connected with second source input VCC2.This circuit has defeated Enter voltage range width, export the features such as driving force is strong.

Embodiment

The schematic diagram of the proximity Hall switch circuit of this example is as it is shown in figure 1, include that the first power input VCC1, second source are defeated Entering to hold VCC2, Hall switch detection module, Signal-regulated kinase and output unit, described first power input VCC1 is respectively Being connected with Hall switch detection module and Signal-regulated kinase, Hall switch detection module is single with Signal-regulated kinase and output respectively Unit connects, and output unit is connected with second source input VCC2.This circuit has wide input voltage range, output driving force The feature such as strong.

Physical circuit is as in figure 2 it is shown, described Hall switch detection module includes electric capacity one C1 and proximity Hall switch IC1, described Signal-regulated kinase includes resistance one R1, diode one D1 and electric capacity two C2, and described output unit includes resistance three R3 and two poles Pipe two D2, concrete annexation is as follows:

One end of described electric capacity one C1 is defeated with the power supply of the first power input VCC1, resistance one R1 and proximity Hall switch respectively Entering end 1 connection, the other end of electric capacity one C1, the ground end 3 of proximity Hall switch and one end ground connection of electric capacity two, Hall is close to opening The outfan 2 closed negative pole with negative pole, the other end of electric capacity two C2 and diode two D2 of diode one D1 respectively is connected, and two The positive pole of pole pipe one D1 is connected with the other end of resistance one R1.The positive pole of diode two D2 is connected with one end of resistance three R3, The other end of resistance three R3 is connected with second source input.Wherein, diode one is light emitting diode, is used for giving the user Indication signal.Diode two preferably germanium diode.C1 is filter capacitor > 10nF is preferred.

Concrete, Signal-regulated kinase is RC circuit, and wherein, diode one D1 is light emitting diode, and resistance one R1 is pull-up Resistance, its current range is 0.1～30Ma；According to response frequency needed for proximity switch, the value of electric capacity two C2 can be calculated, calculate Formula is as follows:

$2*f\left(Hz\right)=\frac{1}{2\mathrm{\π}*R1*C2}.$

During work, as VCC1 > VCC2 time:

When near proximity Hall switch IC1, magnetic induction is sufficiently high, the outfan 2 of proximity Hall switch is low level, two Pole pipe one D1 is luminous；Diode two D2 turns on；

When near proximity Hall switch IC1, magnetic induction is of a sufficiently low, the outfan 2 of proximity Hall switch is high level, two Pole pipe two D2 ends.

When VCC1 < during VCC2:

When near proximity Hall switch IC1, magnetic induction is sufficiently high, the outfan 2 of proximity Hall switch is low level, two Pole pipe one D1 is luminous；Diode D2 turns on；

When near proximity Hall switch IC1, magnetic induction is of a sufficiently low, the outfan 2 of proximity Hall switch is high level, two Pole pipe two D2 ends, diode one D1 by, prevent VCC2 from affect VCC1, it is achieved thereby that it is electric to make this circuit have input The features such as pressure wide ranges, output driving force are strong.

Claims (7)

1. proximity Hall switch circuit, it is characterised in that include the first power input, second source input, Hall switch Detection module, Signal-regulated kinase and output unit, described first power input respectively with Hall switch detection module and signal Conditioning module connects, and Hall switch detection module is connected with Signal-regulated kinase and output unit respectively, output unit and the second electricity Source input connects.

Proximity Hall switch circuit the most according to claim 1, it is characterised in that described Hall switch detection module includes Electric capacity one and proximity Hall switch, one end of described electric capacity one connects with the first power input, Signal-regulated kinase and Hall respectively The power input of nearly switch connects, the other end of electric capacity one and the ground end ground connection of proximity Hall switch, proximity Hall switch defeated Go out end to be connected with Signal-regulated kinase and output unit respectively.

Proximity Hall switch circuit the most according to claim 1 and 2, it is characterised in that described Signal-regulated kinase includes Resistance one, diode one and electric capacity two, one end of resistance one is connected with the first power input and Hall switch detection module respectively, The other end of resistance one is connected with the positive pole of diode one, and the negative pole of diode one is respectively with Hall switch detection module, output singly One end of unit and electric capacity two connects, the other end ground connection of electric capacity two.

Proximity Hall switch circuit the most according to claim 3, it is characterised in that described diode one is light emitting diode.

Proximity Hall switch circuit the most according to claim 1 and 2, it is characterised in that described output unit includes resistance Three and diode two, one end of described resistance three is connected with second source input, and the other end of resistance three is with diode two just Pole connects, and the negative pole of diode two is connected with Hall switch detection module and Signal-regulated kinase respectively.

Proximity Hall switch circuit the most according to claim 3, it is characterised in that described output unit include resistance three and Diode two, one end of described resistance three is connected with second source input, and the other end of resistance three connects with the positive pole of diode two Connecing, the negative pole of diode two is connected with Hall switch detection module and Signal-regulated kinase respectively.

Proximity Hall switch circuit the most according to claim 6, it is characterised in that described diode two is germanium diode.