CN205168209U

CN205168209U - Electric skateboard control system

Info

Publication number: CN205168209U
Application number: CN201520018572.2U
Authority: CN
Inventors: 张一明
Original assignee: Kui Ze Valve (tianjin) Technology Development Co Ltd
Current assignee: CRAZYFIRE TECH CO., LTD.
Priority date: 2015-01-12
Filing date: 2015-01-12
Publication date: 2016-04-20
Anticipated expiration: 2025-01-12

Abstract

The utility model provides an electric skateboard control system, including control system include as the control chip of obs core control component and with control chip electric connection's brake circuit, undervoltage protection circuit, current -limiting circuit, drive circuit and speed governing circuit respectively, the chip of control chip for having the pulse width modulation function, drive circuit include MOSFET component and obs core control 0, the obs core control 1 of MOSFET component is greater than total line voltage of control chip. Compared with the prior art, the utility model discloses an electric skateboard control system adopts the control chip who has the pulse width modulation function, and be equipped with the MOSFET component on drive circuit, it is fast to make whole control system have a response speed, dynamic behavior is good, advantages such as energy conversion rate height, and simultaneously, poleless speed adjusting can be realized to the speed governing circuit that is equipped with on it, satisfy the needs that travel, but undervoltage protection circuit protective power supply over discharge, the current -limiting circuit prevents transfiniting to direct current motor and control chip's harm of electric current.

Description

A kind of electric skateboard control system

Technical field

The utility model relates to electric return board manufacturing technology field, particularly relates to a kind of electric skateboard control system.

Background technology

Electric return board vehicle control is the core component of Segway Human Transporter, it is according to the work of the control realization slide plate of driver, or startup electric return board, or drive slide plate to move ahead, stop, therefore, require that the Conversion of Energy of lithium cell is farthest the kinetic energy of electrical motor by control system, reduce electric energy loss, simultaneously, control system also needs to have good speed adjusting performance, because the speed adjusting performance of control system will directly have influence on the flatness of slide plate car load traveling, the rapidity of response and the traveling comfort etc. of driver, the electric return board vehicle control of prior art all also has the space of raising on energy conversion efficiency and speed adjusting performance.

Utility model content

The purpose of this utility model is to provide the electric return board vehicle control that a kind of energy transformation ratio is high, speed adjusting performance is excellent.

The technical solution of the utility model realizes like this, a kind of electric skateboard control system, comprise control system and comprise control chip as core control element, and the braking circuit to be electrically connected respectively with control chip, under-voltage protecting circuit, current-limiting circuit, driving circuit and alignment circuit, control chip is connected to accept Power supply with power supply, control chip is greater than default under-voltage value by the supply voltage value that the under-voltage protecting circuit be connected with power supply detects, and when detecting that it is in non-brake off-position from braking circuit, control chip turn-on power and driving circuit, the control chip pair speed-regulating signal that the alignment circuit be connected with speed regulating handle inputs processes, export the square-wave signal of corresponding dutycycle to driving circuit, driving circuit amplifies this signal and the DC machine that controlling and driving circuits connects operates, control chip is the chip with pulse width modulation function, driving circuit comprises MOSFET element and the integrated circuit for driven MOS FET element, integrated circuit comprises power tube, the rated voltage of MOSFET element is greater than the bus voltage of control chip.

Further, control chip is the 89C51 micro controller system with pulse width modulation function.

Further, speed regulating handle is photoelectricity speed regulating handle or ear speed regulating handle suddenly.

Further, integrated circuit is TTL integrated circuit, is also provided with a transistor and an isolated component between TTL integrated circuit and MOSFET element, and the grid source electrode of MOSFET element is parallel with a resistance.

Further, integrated circuit also can be CMOS integrated circuit or dedicated IC chip.

Further, a diode is connect between the drain electrode and source electrode of MOSFET element.

Compared with prior art; electric skateboard control system of the present utility model adopts the control chip with pulse width modulation function; and MOSFET element is provided with on driving circuit; whole control system is had, and fast response time, dynamic property are excellent, electric energy conversion rate advantages of higher; simultaneously; the alignment circuit which is provided with can realize stepless time adjustment; meet and travel needs; under-voltage protecting circuit can protection power source over discharge; significantly improve the service life of power supply, current-limiting circuit prevents the infringement of transfiniting to DC machine and control chip of electric current.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of electric skateboard control system of the present utility model;

Fig. 2 is the circuit diagram of the TTL integrated circuit of an embodiment of the present utility model;

Fig. 3 is the circuit diagram of the CMOS integrated circuit of an embodiment of the present utility model.

In figure:

1, control chip; 2, alignment circuit; 3, braking circuit; 4, under-voltage protecting circuit; 5, current-limiting circuit; 6, driving circuit; 7, DC machine.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment; technical scheme in the utility model embodiment is clearly and completely described; obviously; described embodiment is only the utility model part embodiment; instead of whole embodiments; based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

A kind of electric skateboard control system as Figure 1-3, comprise control system and comprise control chip 1 as core control element, and the braking circuit 3 to be electrically connected respectively with control chip 1, under-voltage protecting circuit 4, current-limiting circuit 5, driving circuit 6 and alignment circuit 2, control chip 1 is connected to accept Power supply with power supply, the supply voltage value that control chip 1 is detected by the under-voltage protecting circuit 4 be connected with power supply is greater than default under-voltage value, and when detecting that it is in non-brake off-position from braking circuit 3, control chip 1 turn-on power and driving circuit 6, control chip 1 processes the speed-regulating signal that the alignment circuit 2 be connected with speed regulating handle inputs, export the square-wave signal of corresponding dutycycle to driving circuit 6, driving circuit 6 amplifies this signal and the DC machine 7 that controlling and driving circuits 6 connects operates,

Control chip 1 is for having the chip of pulse width modulation function, its " dutycycle " changing voltage on DC machine 7 armature changes the size of average output current, thus controls the rotating speed of DC machine 7, under pulsating effect, when DC machine 7 is energized, speed increases, during DC machine 7 power-off, speed reduces gradually, as long as according to certain rules, changes the time of switching electricity, DC machine 7 rotating speed can be allowed to be controlled, and the chip with pulse width modulation function has that switching frequency high, low speed is stable, dynamic property is excellent, efficiency advantages of higher, the utility model preferentially selects 89C51 micro controller system, AT89C51 adopts the crystal of 12MHz, namely the cycle of PWM waveform is 100uS, frequency is 10KHz, and it adopts the method for fixed frequency modulated PWM, the signal of driving circuit 6 exports direct master cock pipe V1 after 7407 bufferings from P3.7 pin, when the grid input high level of switching valve V1, switching valve V1 conducting, there is voltage U s at direct-current motor armature winding two ends, when the grid input low level of switching valve V1, switching valve V1 ends, direct-current motor armature winding both end voltage is 0, utilize leading to of switching valve V1, the disconnected average voltage level regulating DC machine 7 armature loop two ends, realize the adjustment to motor speed,

During speed governing operation, the speed electric that speed regulating handle exports is converted to digital quantity through A/D, control chip 1 carries out PWM pulse duration modulation according to this digital quantity, thus the conducting of power tube controlled in driving circuit 6 or the ratio of closedown are to control the size of motor speed, speed regulating handle can be photoelectricity speed regulating handle or ear speed regulating handle suddenly, in this example, preferentially select ear speed regulating handle suddenly, rotate speed regulating handle, change the magnetic-field intensity around Hall unit, also the output voltage of ear speed regulating handle suddenly is just changed, wherein, the speed conditioning signal regulation of line voltage from small to large of speed regulating handle is 1-4.2V, be be commonly called as just speed governing, also can be 4.2-1V, be the shaft speed governing be commonly called as,

Braking circuit 3 comprises with the brake of electric return board the Hall element of the position sensing element be connected and switching mode, when braking, position variation signal is sent in control chip 1, no matter speed regulating handle is in any state, control chip 1 priority acccess control cuts off driving circuit 6 and stops power supply, and protection driving circuit 6 and DC machine 7, prevent the waste of electricity, also reduce drag moment, thus protect the safety of bicyclist;

Driving circuit 6 comprises MOSFET element and the integrated circuit for driven MOS FET element, MOSFET element has that switching speed is fast, easy in parallel, drive form is diversified and required driving power is low etc. advantage, the speed adjusting performance of driving circuit 6 can be significantly improved, integrated circuit comprises power tube, the rated voltage of MOSFET element is greater than the bus voltage of control chip 1, and MOSFET element is in actv. mode of operation all the time.

Electric skateboard control system of the present utility model adopts the control chip 1 with pulse width modulation function; and MOSFET element is provided with on driving circuit 6; whole control system is had, and fast response time, dynamic property are excellent, electric energy conversion rate advantages of higher; simultaneously; the alignment circuit 2 which is provided with can realize stepless time adjustment; meet and travel needs; under-voltage protecting circuit 4 can protection power source over discharge; significantly improve the service life of power supply, current-limiting circuit 5 prevents the infringement of transfiniting to DC machine 7 and control chip 1 of electric current.

As further technical scheme, integrated circuit is TTL integrated circuit, a transistor and an isolated component is provided with between TTL integrated circuit and MOSFET element, transistor can connect in circuit with complementary, conducting speed and the turn-off speed of MOSFET element can be accelerated, and reduce power consumption, the grid source electrode of MOSFET element is parallel with a resistance R2, its resistance is 5.1-20K Ω, to improve withstand voltage, du/dt tolerance and the antijamming capability of MOSFET, also want two stabilivolts of playing a reversed role in parallel if desired.

As further technical scheme, integrated circuit also can be CMOS integrated circuit or dedicated IC chip, compared with TTL integrated circuit, driving voltage and the MOSFET element of CMOS integrated circuit are much the same, therefore, can the conducting of driven MOS FET element, its composite construction is simple, but its load-carrying ability is lower, therefore the switching speed of power field effect pipe can be affected, during use, can by the parallel connection of multiple CMOS integrated circuit together, large-drive-current driven MOS FET element can be added, improve load-carrying capacity; Special drive integrated circult volume is little, circuit is simple, reliable, be widely used, but price comparison is high.

As further technical scheme, produce induced voltage and power line voltage sum instantaneously puncture MOSFET for preventing MOSFET in cut-off, connecing one between the drain electrode and source electrode of MOSFET element can the diode D1 of quick-recovery soon.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims

1. an electric skateboard control system, it is characterized in that: comprise control system and comprise control chip as core control element, and the braking circuit to be electrically connected respectively with described control chip, under-voltage protecting circuit, current-limiting circuit, driving circuit and alignment circuit, control chip is connected to accept Power supply with power supply, control chip is greater than default under-voltage value by the supply voltage value that the under-voltage protecting circuit be connected with power supply detects, and when detecting that it is in non-brake off-position from braking circuit, control chip turn-on power and driving circuit, the control chip pair speed-regulating signal that the alignment circuit be connected with speed regulating handle inputs processes, export the square-wave signal of corresponding dutycycle to driving circuit, driving circuit amplifies this signal and the DC machine that controlling and driving circuits connects operates, described control chip is the chip with pulse width modulation function, described driving circuit comprises MOSFET element and the integrated circuit for driven MOS FET element, described integrated circuit comprises power tube, the rated voltage of described MOSFET element is greater than the bus voltage of described control chip.

2. electric skateboard control system according to claim 1, is characterized in that: described control chip is the 89C51 micro controller system with pulse width modulation function.

3. electric skateboard control system according to claim 1, is characterized in that: described speed regulating handle is photoelectricity speed regulating handle or ear speed regulating handle suddenly.

4. electric skateboard control system according to claim 1, it is characterized in that: described integrated circuit is TTL integrated circuit, also be provided with a transistor and an isolated component between described TTL integrated circuit and described MOSFET element, the grid source electrode of described MOSFET element is parallel with a resistance.

5. electric skateboard control system according to claim 1, is characterized in that: described integrated circuit also can be CMOS integrated circuit or dedicated IC chip.

6. electric skateboard control system according to claim 1, is characterized in that: connect a diode between the drain electrode and source electrode of described MOSFET element.