CN207543083U - A kind of circuit and balance car - Google Patents

Abstract

The utility model is related to a kind of circuit and balance cars, belong to electronic circuit technology field.The circuit includes：First switch circuit and second switch circuit.First switch circuit and second switch circuit are connected with the same GPIO interface of the control chip in an equipment.When any one in first switch circuit and second switch circuit is connected, GPIO interface inputs the first level, when first switch circuit and second switch circuit are not turned on, GPIO interface input second electrical level.No longer it is that a circuit uses an interface since the first switch circuit and second switch circuit share a GPIO interface, and then solves the problems, such as the I/O resource waste of the control chip.When controlling I/O port, as I/O port uses the increase of number, it is necessarily caused to control the complication of program.And the circuit is by the use number of the I/O port of optimal control chip, can simplify its controls program, cost-effective to improve control efficiency.

Description

A kind of circuit and balance car

Technical field

The utility model belongs to electronic circuit technology field, and in particular to a kind of circuit and balance car.

Background technology

With the development of science and technology, requirement of the people to electronic circuit is also more and more, for example, integrated, intelligent, small Type etc. proposes more and more requirements, wherein, it is no lack of the requirement to the control aspect of electronic circuit, for example, simplifying Control operation, control program to electronic circuit etc. to reduce cost, avoid causing the wasting of resources of control chip.It is and usual The control of optimal control chip is wanted to operate, control program etc., needs to optimize corresponding electronic circuit, it is made to meet control Demand to economize on resources, reduces cost, simplifies operation etc..

Utility model content

In consideration of it, the purpose of this utility model is to provide a kind of circuit and balance car, to effectively improve the above problem.

What the embodiment of the utility model was realized in：

The utility model embodiment provides a kind of circuit, including：First switch circuit and second switch circuit.Described One switching circuit and the second switch circuit are connected with the same GPIO interface of the control chip in an equipment.Described first When any one in switching circuit and the second switch circuit is connected, the GPIO interface inputs the first level.Described first When switching circuit and the second switch circuit are not turned on, the GPIO interface inputs second electrical level.

In the utility model preferred embodiment, the first switch circuit includes：First inductive switch and first is opened Guan Guan, first inductive switch are connect with the first switch pipe, and the first switch pipe is connect with the GPIO interface.

In the utility model preferred embodiment, first inductive switch is：First optoelectronic switch, first light The anode tap of first light emitting diode of electric switch is connect with the first power supply, the cathode terminal ground connection of first Light-Emitting Diode, One end ground connection of first reception pipe of first optoelectronic switch, the other end of first reception pipe respectively with second source and The first switch pipe connection.

In the utility model preferred embodiment, the first switch circuit further includes：First filter circuit and/or Two filter circuits, the anode tap of first light emitting diode are connect by first filter circuit with first power supply； The other end of first reception pipe is connect by second filter circuit with the second source.

In the utility model preferred embodiment, the first switch pipe is triode, the of the first switch pipe One end is connect with first inductive switch, the second end ground connection of the first switch pipe, the third end of the first switch pipe It is connect with the GPIO interface, the third end of the first switch pipe is also connect with third power supply.

In the utility model preferred embodiment, the second switch circuit includes：Second inductive switch and second is opened Guan Guan, second inductive switch are connect with the second switch pipe, and the second switch pipe is connect with the GPIO interface.

In the utility model preferred embodiment, second inductive switch is：Second optoelectronic switch, second light The anode tap of second light emitting diode of electric switch is connect with the 4th power supply, the cathode terminal ground connection of second Light-Emitting Diode, One end ground connection of second reception pipe of second optoelectronic switch, the other end of second reception pipe respectively with the 5th power supply and The second switch pipe connection.

In the utility model preferred embodiment, the second switch circuit further includes：Third filter circuit and/or Four filter circuits, the anode tap of second light emitting diode are connect by the third filter circuit with the 4th power supply； The other end of second reception pipe is connect by the 4th filter circuit with the 5th power supply.

In the utility model preferred embodiment, the second switch pipe is triode, the of the second switch pipe One end is connect with second inductive switch, the second end ground connection of the second switch pipe, the third end of the second switch pipe It is connect with the GPIO interface, the third end of the second switch pipe is also connect with the 6th power supply.

The utility model embodiment additionally provides a kind of balance car, including, control chip and two above-mentioned circuits, two The circuit is respectively the first circuit and second circuit, and a GPIO interface of first circuit and the control chip connects It connects, the second circuit is connect with another GPIO interface of the control chip.

The circuit and balance car that the utility model embodiment provides, compared with prior art, the first switch circuit and the Two switching circuits can be connected with the same GPIO interface of the control chip in an equipment, the first switch circuit and described When any one in second switch circuit is connected, the GPIO interface inputs the first level, the first switch circuit and described When second switch circuit is not turned on, the GPIO interface inputs second electrical level.Due to the first switch circuit and second switch Circuit shares a GPIO interface, is no longer that a circuit uses an interface, and then solve the I/O resource of the control chip The problem of waste.In addition, when controlling I/O port, as I/O port uses the increase of number, it is necessarily caused to control program Complication.And the circuit can simplify its control program, to improve control by the use number of the I/O port of optimal control chip Efficiency processed, it is cost-effective, and do not allow error-prone.

Other feature and advantage of the utility model will illustrate, also, in subsequent specification partly from specification It becomes apparent or is understood by implementing the utility model embodiment.The purpose of this utility model and other advantages can It realizes and obtains by specifically noted structure in the specification, claims and attached drawing write.

Description of the drawings

It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model Some embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to this A little attached drawings obtain other attached drawings.By the way that shown in attached drawing, the above and other purpose, feature and advantage of the utility model will more Clearly.Identical reference numeral indicates identical part in whole attached drawings.Do not painted by actual size equal proportion scaling deliberately Attached drawing processed, it is preferred that emphasis is show the purport of the utility model.

Fig. 1 shows a kind of structure diagram for circuit that the utility model first embodiment provides.

Fig. 2 shows the schematic diagrams for the circuit that the utility model first embodiment provides.

Fig. 3 shows the schematic diagram for the circuit that the utility model second embodiment provides.

Fig. 4 shows a kind of structure diagram for balance car that the utility model embodiment provides.

Icon：10A- circuits；10B- circuits；11A- first switch circuits；11B- first switch circuits；111- One inductive switch；112A- first switch pipes；112B- first switch pipes；The first filter circuits of 113-；114- second is filtered Circuit；12A- second switch circuits；12B- second switch circuits；The second inductive switches of 121-；122A- second switch pipes； 122B- second switch pipes；123- third filter circuits；The 4th filter circuits of 124-；20- balance cars；21- controls chip.

Specific embodiment

Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and The component of the utility model embodiment shown can be configured to arrange and design with a variety of different.

Therefore, requirement is not intended to limit to the detailed description of the embodiment of the utility model provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, those of ordinary skill in the art's all other embodiments obtained without creative efforts, all Belong to the range of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.

In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right", " water It is flat ", " interior ", the orientation of the instructions such as " outer " or position relationship is based on orientation shown in the drawings or position relationship or the reality With novel product using when the orientation usually put or position relationship, be for only for ease of description the utility model and simplification retouched It states rather than indicates or imply signified device or element must have specific orientation, with specific azimuth configuration and operation, Therefore it is not intended that limitation to the utility model.It is retouched in addition, term " first ", " second ", " third " etc. are only used for distinguishing It states, and it is not intended that instruction or hint relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, Or it is integrally connected；Can be mechanical connection or electrical connection；It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition Solve concrete meaning of the above-mentioned term in the utility model.

The inductive switch part of the current balance car of prevalence on the market, is all to correspond to its master control core using an optoelectronic switch As soon as what the mode of the I/O port of piece was set, for example, 4 optoelectronic switches need 4 I/O ports, as I/O port uses the increasing of number Add, when controlling these I/O ports, it is necessarily caused to control the complication of program, be unfavorable for cost-effective, while can also Lead to the waste of chip I/O resource.

First embodiment

To solve the above-mentioned problems, the utility model embodiment provides a kind of circuit 10A, as shown in Figure 1, the circuit 10A includes：First switch circuit 11A and second switch circuit 12A, wherein the first switch circuit 11A and second switch circuit 12A is connected with the same GPIO interface of the control chip in an equipment.The first switch circuit 11A and the second switch When any one in circuit 12A is connected, the GPIO interface inputs the first level；The first switch circuit 11A and described When two switching circuit 12A are not turned on, the GPIO interface inputs second electrical level.

Wherein, as a kind of embodiment, as shown in Fig. 2, first switch circuit 11A includes：First inductive switch 111st, the first filter circuit 113, the second filter circuit 114 and first switch pipe 112A.First inductive switch 111 with it is described The 112A connections of first switch pipe, the first switch pipe 112A are connect with the GPIO interface.Wherein, first inductive switch 111 can be the first optoelectronic switch, and the anode tap of the first light emitting diode of first optoelectronic switch is connect with the first power supply. Preferably, the anode tap of first light emitting diode is connect by first filter circuit 113 with first power supply.It is described The cathode terminal ground connection of first Light-Emitting Diode, one end ground connection of the first reception pipe of first optoelectronic switch, described first connects The other end of closed tube is connect respectively with second source and the first switch pipe 112A.Preferably, first reception pipe is another One end is connect by second filter circuit 114 with the second source.

Wherein, the first filter circuit 113 puts down its voltage signal exported for filtering the redundant signals in the first power supply Surely.Preferably, which is RC filter circuits, including：First resistor R1 and the first capacitance C1.First electricity One end of resistance R1 is connect with the anode tap of first light emitting diode, and the other end of first resistor R1 connects with first power supply It connects, in addition, the other end of first resistor R1 is also grounded through the first capacitance C1.Wherein, which can be according to reality Border use demand is set, for example, it may be the power supply of 3.3V.

Wherein, the second filter circuit 114 is used to filter the redundant signals in second source, puts down its voltage signal exported Surely.Preferably, which is RC filter circuits, including：Second resistance R2 and the second capacitance C2.Second electricity One end of resistance R2 is connect with the other end of the first reception pipe, and the other end of second resistance R2 is connect with the second source, this Outside, the other end of second resistance R2 is also grounded through the second capacitance C2.Wherein, which can be according to actual use Demand is set, for example, it may be the power supply of 3.3V.

Wherein, one end of first reception pipe can be emitter, and the other end of first reception pipe can be current collection Pole.

Wherein, first inductive switch 111 or infrared induction switch, for example, the infrared induction switch includes：It is red Outer transmitting tube and infrared receiving tube.Its principle is similar with the first optoelectronic switch, in order to avoid burden, no longer introduces herein.

Wherein, the first switch pipe 112A can be triode, the first end of the first switch pipe 112A with it is described First inductive switch 111 connects, the second end ground connection of the first switch pipe 112A, the third end of the first switch pipe 112A It is connect with the GPIO interface, the third end of the first switch pipe 112A is also connect with third power supply.Preferably, described first The third end of switching tube 112A is also connect through 3rd resistor R3 with third power supply.Wherein, which can be according to actually making It is set with demand, for example, it may be the power supply of 3.3V.As a kind of embodiment, when the triode is NPN type triode When, the first end of first switch pipe 112A can be base stage, and second end can be emitter, and third end can be current collection Pole.

Wherein, as a kind of embodiment, as shown in Fig. 2, second switch circuit 12A includes：Second inductive switch 121st, third filter circuit 123, the 4th filter circuit 124 and second switch pipe 122A.Second inductive switch 121 with it is described The 122A connections of second switch pipe, the second switch pipe 122A are connect with the GPIO interface.Wherein, second inductive switch 121 can be the first optoelectronic switch, and the anode tap of the second light emitting diode of first optoelectronic switch is connect with the 4th power supply. Preferably, the anode tap of second light emitting diode is connect by the third filter circuit 123 with the 4th power supply.It is described The cathode terminal ground connection of first Light-Emitting Diode, one end ground connection of the second reception pipe of first optoelectronic switch, described second connects The other end of closed tube is connect respectively with the 5th power supply and the second switch pipe 122A.Preferably, second reception pipe is another One end is connect by the 4th filter circuit 124 with the 5th power supply.

Wherein, third filter circuit 123 puts down its voltage signal exported for filtering the redundant signals in the 4th power supply Surely.Preferably, which is RC filter circuits, including：4th resistance R4 and third capacitance C3.4th electricity One end of resistance R4 is connect with the anode tap of second light emitting diode, and the other end of the 4th resistance R4 connects with the 4th power supply It connects, in addition, the other end of the 4th resistance R4 is also grounded through the third capacitance C3.Wherein, the 4th power supply can be according to reality Border use demand is set, for example, it may be the power supply of 3.3V.

Wherein, the 4th filter circuit 124 puts down its voltage signal exported for filtering the redundant signals in the 5th power supply Surely.Preferably, the 4th filter circuit 124 is RC filter circuits, including：5th resistance R5 and the 4th capacitance C4.5th electricity One end of resistance R5 is connect with the other end of the second reception pipe, and the other end of the 5th resistance R5 is connect with the 5th power supply, this Outside, the other end of the 5th resistance R5 is also grounded through the 4th capacitance C4.Wherein, the 5th power supply can be according to actual use Demand is set, for example, it may be the power supply of 3.3V.

Wherein, one end of second reception pipe can be emitter, and the other end of second reception pipe can be current collection Pole.

Wherein, second inductive switch 121 or infrared induction switch, for example, the infrared induction switch includes：It is red Outer transmitting tube and infrared receiving tube.Its principle is similar with the first optoelectronic switch, in order to avoid burden, no longer introduces herein.

Wherein, the second switch pipe 122A can be triode, the first end of the second switch pipe 122A with it is described Second inductive switch 121 connects, the second end ground connection of the second switch pipe 122A, the third end of the second switch pipe 122A It is connect with the GPIO interface, the third end of the second switch pipe 122A is also connect with the 6th power supply.Preferably, described second The third end of switching tube 122A is also connect through the 6th resistance R6 with the 6th power supply.Wherein, the 5th power supply can be according to actually making It is set with demand, for example, it may be the power supply of 3.3V.As a kind of embodiment, when the triode is NPN type triode When, the first end of second switch pipe 122A can be base stage, and second end can be emitter, and third end can be current collection Pole.

Wherein, the first power supply, second source, third power supply, the 4th power supply, the 5th power supply and the 6th power supply can be same A power supply, for example, it may be the power supply of 3.3V.

Its whole schematic diagram such as Fig. 2 institute by first switch circuit 11A and second switch circuit 12A the circuit 10A formed Show, when any one in the first switch circuit 11A and the second switch circuit 12A is connected, the GPIO interface input When first level, the first switch circuit 11A and the second switch circuit 12A are not turned on, the GPIO interface input Second electrical level.

It should be noted that conducting described in the present embodiment refers to, the first light emitting diode of the first optoelectronic switch with Conducting between second light emitting diode of conducting and/or the second optoelectronic switch between the first reception pipe and the first reception pipe. For first switch circuit 11A, when first switch circuit 11A refers to the first light emitting diode and of the first optoelectronic switch One reception pipe is connected, i.e. the first reception pipe can receive the signal of the first light emitting diode transmission.First switch circuit 11A is not led When logical, refer to that the first reception pipe cannot receive the signal of the first light emitting diode transmission, i.e. the first Light-Emitting Diode is emitted Light blocked by anti-dazzling screen so that the first reception pipe cannot receive the first light emitting diode transmission signal.It is opened for second For powered-down road 12A, principle is identical with first switch circuit 11A.

Wherein, word is come with circuit diagram shown in Fig. 2, which is low level, which is high level.

Wherein, low level represents that voltage value is less than the voltage of the first numerical value, and the first numerical value is a typical number in industry Value.For example, for generally for TTL circuits, the first numerical value is 0.0V-0.4V, and for cmos circuit, the first numerical value For 0.0-0.1V.In the utility model embodiment, it is preferable that the first numerical value is 0V, i.e., low level is 0V.High level represents electricity Pressure value is higher than the voltage of second value, and second value is a common numerical value in industry.For example, come generally for TTL circuits It says, second value 2.4V-5.0V, and for cmos circuit, second value 4.99-5.0V.The utility model is real It applies in example, it is preferable that second value 3.3V, i.e. high level are 3.3V.

Second embodiment

As shown in figure 3, circuit 10B provided in this embodiment is compared with first embodiment, the difference is that first opens Powered-down road 11B and second switch circuit 12B is different.

As another embodiment, when first switch pipe 112B is PNP type triode, first switch pipe 112B's First end can be base stage, and second end can be collector, and third end can be emitter.Second switch pipe 122B is During PNP type triode, the first end of second switch pipe 122B can be base stage, and second end can be collector, third End can be emitter.

Wherein, word is come with circuit diagram shown in Fig. 3, which is low level, which is high level.

The utility model embodiment additionally provides a kind of balance car 20, as shown in figure 4, including：Control chip 21 and two Circuit 10A described in above-mentioned first embodiment.Wherein, two circuit 10A are respectively the first circuit and second circuit, described First circuit is connect with a GPIO interface of the control chip 21, for example, GPIO6 interfaces；The second circuit with it is described Another GPIO interface connection of chip 21 is controlled, for example, GPIO7 interfaces.

Wherein, the first circuit for 20 left pedal of inductance balance vehicle whether someone, second circuit be used for inductance balance vehicle 20 right-side pedals whether someone.Due to being equipped with anti-dazzling screen in the local position of pedal, when the foot of cyclist is placed on pedal, As long as foot gives anti-dazzling screen downward power, anti-dazzling screen will be sheltered from the first optoelectronic switch and/or the second optoelectronic switch.Due to When whether the first optoelectronic switch and/or the second optoelectronic switch are blocked, the level of GPIO interface input will be different.In order to It is clearer, herein only by taking the circuit 10A shown in first embodiment as an example, i.e. first switch pipe 112A and second switch pipe 122A During for NPN type triode, illustrate.When foot is not placed on pedal by bicyclist namely the first optoelectronic switch and the second light When electric switch is blocked without anti-dazzling screen, at this point, the level of GPIO interface input is high level, when foot is placed on pedal by bicyclist When namely the first optoelectronic switch and/or the second optoelectronic switch will be blocked by anti-dazzling screen, at this point, the level of GPIO interface input For low level.Therefore, can this be controlled according to the height of level that the GPIO6 and/or GPIO7 interfaces of control chip 21 input The operating status of balance car 20, for example, balance car 20 whether there is driving output.For example, come with the circuit 10A shown in first embodiment It says, when the level that can be GPIO interface input is low level, 20 output driving of balance car at this time, the level of GPIO interface input During for high level, balance car 20 is exported without driving at this time.

Wherein, it should be noted that can be the result that is detected according to the first circuit to control the operation of the balance car 20 The state or result detected according to second circuit controls the operating status of the balance car 20 can also be according to the The result of testing result and the second circuit detection of one circuit controls the operating status of the balance car 20 jointly.For example, first Kind, as long as detect someone on left-hand tread plate or right-hand tread plate, which just brings into operation with regard to output driving, second, only When being detected simultaneously by equal someone on left-hand tread plate and right-hand tread plate, which brings into operation.

It is opened when with the circuit 10B shown in second embodiment, i.e. first switch pipe 112B and second switch pipe 122B are PNP During type triode, when the level that can be GPIO interface input is high level, 20 output driving of balance car, GPIO interface are defeated at this time When the level entered is low level, balance car 20 is exported without driving at this time.

Wherein, the control chip 21 in above-mentioned can be a kind of IC chip, have the processing capacity of signal.It is above-mentioned Control chip 21 can be general processor, including central processing unit (Central Processing Unit, CPU), network Processor (Network Processor, NP) etc.；It can also be digital signal processor (Digital Signal Processing, DSP), it is application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing Into programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete Door or transistor logic, discrete hardware components.General processor can be microprocessor or the control chip 21 It can be any conventional processor etc..In this present embodiment, it is preferable that the control chip 21 can be the place of STM32 series Manage device, such as the models such as STM32F103C8T6, STM32F103VET6.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of circuit, which is characterized in that including：First switch circuit and second switch circuit, the first switch circuit and The second switch circuit is connected with the same GPIO interface of the control chip in an equipment, the first switch circuit and institute When stating any one conducting in second switch circuit, the GPIO interface inputs the first level, the first switch circuit and institute When stating second switch circuit and being not turned on, the GPIO interface inputs second electrical level.

2. circuit according to claim 1, which is characterized in that the first switch circuit includes：First inductive switch and First switch pipe, first inductive switch are connect with the first switch pipe, the first switch pipe and the GPIO interface Connection.

3. circuit according to claim 2, which is characterized in that first inductive switch is：First optoelectronic switch, it is described The anode tap of first light emitting diode of the first optoelectronic switch is connect with the first power supply, the cathode terminal of first Light-Emitting Diode Ground connection, one end ground connection of the first reception pipe of first optoelectronic switch, the other end of first reception pipe is respectively with second Power supply is connected with the first switch pipe.

4. circuit according to claim 3, which is characterized in that the first switch circuit further includes：First filter circuit And/or second filter circuit, the anode tap of first light emitting diode pass through first filter circuit and the described first electricity Source connects；The other end of first reception pipe is connect by second filter circuit with the second source.

5. according to the circuit described in claim 2-4 any one, which is characterized in that the first switch pipe be triode, institute The first end for stating first switch pipe is connect with first inductive switch, the second end of first switch pipe ground connection, and described the The third end of one switching tube is connect with the GPIO interface, and the third end of the first switch pipe is also connect with third power supply.

6. circuit according to claim 1, which is characterized in that the second switch circuit includes：Second inductive switch and Second switch pipe, second inductive switch are connect with the second switch pipe, the second switch pipe and the GPIO interface Connection.

7. circuit according to claim 6, which is characterized in that second inductive switch is：Second optoelectronic switch, it is described The anode tap of second light emitting diode of the second optoelectronic switch is connect with the 4th power supply, the cathode terminal of second Light-Emitting Diode Ground connection, one end ground connection of the second reception pipe of second optoelectronic switch, the other end of second reception pipe is respectively with the 5th Power supply is connected with the second switch pipe.

8. circuit according to claim 7, which is characterized in that the second switch circuit further includes：Third filter circuit And/or the 4th filter circuit, the anode tap of second light emitting diode pass through the third filter circuit and the described 4th electricity Source connects；The other end of second reception pipe is connect by the 4th filter circuit with the 5th power supply.

9. according to the circuit described in claim 6-8 any one, which is characterized in that the second switch pipe be triode, institute The first end for stating second switch pipe is connect with second inductive switch, the second end of second switch pipe ground connection, and described the The third end of two switching tubes is connect with the GPIO interface, and the third end of the second switch pipe is also connect with the 6th power supply.

10. a kind of balance car, which is characterized in that including, control chip and two it is as described in any one of claims 1-9 Circuit, two circuits are respectively the first circuit and second circuit, one of first circuit and the control chip GPIO interface connects, and the second circuit is connect with another GPIO interface of the control chip.