CN204995682U

CN204995682U - Automatic obstacle controller of electron wheelchair

Info

Publication number: CN204995682U
Application number: CN201520719719.0U
Authority: CN
Inventors: 龚攀
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-09-17
Filing date: 2015-09-17
Publication date: 2016-01-27
Anticipated expiration: 2025-09-17

Abstract

The utility model discloses an automatic obstacle controller of electron wheelchair, including singlechip, clock circuit, reading and writing circuit, tracking module, power supply circuit, display circuit, motor -drive circuit, warning circuit and infrared obstacle module, the singlechip respectively with the clock circuit the reading and writing circuit the tracking module power supply circuit the display circuit motor -drive circuit warning circuit with infrared obstacle module is connected, compares with prior art, the utility model discloses can walk according to setting for the orbit by the route of single chip microcomputer control wheelchair, avoid the obstacle when meetting the obstacle and report to the police to can read and write through the procedure at any time and change operating path etc. Convenient to use, low in cost is favorable to popularizing, has the value of popularization and application.

Description

The automatic barrier controller of a kind of electronics wheelchair

Technical field

This utility model relates to a kind of electronic control system, particularly relates to the automatic barrier controller of a kind of electronics wheelchair.

Background technology

Wheelchair is the important tool of rehabilitation, and it is not only the walking-replacing tool of limbs the disabled and handicapped personage, the more important thing is and makes them carry out physical exercise by means of wheelchair and participate in social activity.Common wheelchair is generally made up of by four parts wheelchair frame, wheel, brake gear and seat.Hand wheelchair, on common wheelchair basis, increases manual setter.But function is too single, there is the wheelchair of a lot of Electronic control in prior art, the more senior wheelchair also having brain wave to control, but the wheelchair cost that brain wave controls is too high, operation is difficult, not easily popularizes, therefore, the Based Intelligent Control wheelchair that a kind of cost is low, easily universal is needed.

Utility model content

The purpose of this utility model is just to provide a kind of electronics wheelchair automatic barrier controller to solve the problem.

This utility model is achieved through the following technical solutions above-mentioned purpose:

This utility model comprises single-chip microcomputer, clock circuit, read/write circuit, tracking module, power circuit, display circuit, motor-drive circuit, warning circuit and infrared obstacle module, described single-chip microcomputer respectively with described clock circuit, described read/write circuit, described tracking module, described power circuit, described display circuit, described motor-drive circuit, described warning circuit and described infrared obstacle model calling, described single-chip microcomputer is the single-chip microcomputer of model STC89C52, described read/write circuit adopts model to be the processor of MAX3232, described tracking module adopts model to be the amplifier of LM393, three resistance, potentiometer, photosensitive tube and luminous tube composition, described motor-drive circuit adopts model to be the processor of L298N, described power circuit employing model is the voltage stabilizing chip of LM2567.

The beneficial effects of the utility model are:

This utility model is the automatic barrier controller of a kind of electronics wheelchair, compared with prior art, this utility model can by the route of Single-chip Controlling wheelchair, walk according to setting track, avoid obstacle when running into obstacle and report to the police, and can be read and write by program at any time and change operating path etc., easy to use, cheap, be conducive to popularizing, there is the value applied.

Accompanying drawing explanation

Fig. 1 is system structure theory diagram of the present utility model;

Fig. 2 is single chip circuit structural representation of the present utility model;

Fig. 3 is the electrical block diagram of clock circuit of the present utility model;

Fig. 4 is the electrical block diagram of read/write circuit of the present utility model;

Fig. 5 is the electrical block diagram of tracking module of the present utility model;

Fig. 6 is the electrical block diagram of infrared obstacle module of the present utility model;

Fig. 7 is the electrical block diagram of motor-drive circuit of the present utility model;

Fig. 8 is the electrical block diagram of display circuit of the present utility model;

Fig. 9 is the electrical block diagram of power circuit of the present utility model;

Figure 10 is the electrical block diagram of warning circuit of the present utility model.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1: this utility model comprises single-chip microcomputer, clock circuit, read/write circuit, tracking module, power circuit, display circuit, motor-drive circuit, warning circuit and infrared obstacle module, described single-chip microcomputer respectively with described clock circuit, described read/write circuit, described tracking module, described power circuit, described display circuit, described motor-drive circuit, described warning circuit and described infrared obstacle model calling, described single-chip microcomputer is the single-chip microcomputer of model STC89C52, described read/write circuit adopts model to be the processor of MAX3232, described tracking module adopts model to be the amplifier of LM393, three resistance, potentiometer, photosensitive tube and luminous tube composition, described motor-drive circuit adopts model to be the processor of L298N, described power circuit employing model is the voltage stabilizing chip of LM2567.

As shown in Figure 2: single-chip microcomputer adopts 52 series monolithics as core processor.Single-chip computer control system is made up of minimum system and peripheral signal I/O mouth substantially, and wherein minimum system comprises power supply, CPU sequential (general 11.0592M or 12M of use and 30P electric capacity form), reset circuit.Had above three pieces, single-chip microcomputer just can normally work.

Single-chip microcomputer inside has one for forming the high-gain inverting amplifier of agitator, and pin RXD and TXD is input and the outfan of this amplifier respectively.Clock can be produced by internal type or external mode produces.As shown in Figure 3, external timing element on RXD and TXD pin, internal oscillator just produces self-oscillation to the clock circuit of internal type.Timing element adopts the shunt-resonant circuit of quartz crystal and electric capacity composition usually.Crystal oscillation frequency can be selected between 1.2 ~ 12MHz, and capacitance is selected between 5 ~ 30pF, and the large I of capacitance plays fine setting to frequency.

As shown in Figure 4: because computer serial port RS level is-10V+10V, and the signal voltage of general scm application system is Transistor-Transistor Logic level 0+5V.MAX232 is just used to carry out level conversion, and this device comprises 2 drivers, 2 receptors and a voltage generator circuit provides TLA/EIA-232-F level.Single-chip microcomputer supports that serial ports is downloaded, therefore native system adopts serial ports programming program, utilizes MAX232 chip to carry out level conversion.

As shown in Figure 5: track and refer to that dolly follows black line walking on white floor, the method that native system adopts is infrared detecting method, namely infrared ray is utilized to have the feature of different reflectivity properties at the body surface of different colours, constantly infrared light is launched earthward in dolly driving process, when infrared light runs into white papery floor, diffuse-reflectance occurs, the receiving tube that reflected light is installed in dolly receives; If run into black line, infrared light is absorbed, and the receiving tube of dolly life does not receive infrared light.Process changes the output voltage of receiving tube thus, single-chip microcomputer being changed to according to performing vehicle motor determination track route with voltage.

As shown in Figure 6: this utility model adopts infrared ray obstacle, utilize a pipe to launch a pipe and receive, ultrared reception is with or without carrying out disturbance in judgement thing to external world for adopter, and this mode is disturbed little, and is easy to realize.The impact being subject to extraneous visible ray due to infrared ray is larger, therefore 38KHz modulation signal is used, infrared-emitting diode launches infrared ray, a high level signal can be exported when not running into barrier, delivering to I/O mouth in single-chip microcomputer, if after running into barrier, light reflection is returned, the photodiode received will conducting, at this time will export a low level, deliver to single-chip processor i/o mouth.

As shown in Figure 7: L298N is bridge motor special chip of enjoying a double blessing, inside comprises 4 channel logic drive circuits, it is the special purpose driver of a kind of two-phase and four phase step motor, 2 two-phases or 1 four phase step motor can be driven simultaneously, include the high voltage of two H-Bridge, big current is enjoyed a double blessing bridge driver, receives standard TTL logic level signal, the motor of below 46V2A can be driven, and directly can carry out regulation output voltage through power supply; This chip directly can provide simulated timing diagrams signal by the IO port of single-chip microcomputer.

As shown in Figure 8: the character generation memorizer (CGROM) of 1602 Liquid Crystal Module inside has stored 160 different dot character figures, these characters have: the capital and small letter of Arabic numerals, English alphabet, conventional symbol and Japanese ideogram etc., each character has a fixing code, the code of the English alphabet " A " such as capitalized is 01000001B (41H), during display, module shows the dot character figure in the 41H of address, and we just can see letter " A ".

As shown in Figure 9: the stabilivolt of LM2576 series is monolithic integrated optical circuit, the various functions of step-down switching regulator can be provided, the load of 3A can be driven, have excellent linear and load capacity, the fixing output voltage of these devices has 3.3v5v12v, also has the model that adjustable exports.

As shown in Figure 10: the P2.5 mouth of single-chip microcomputer drives buzzer by NPN type triode.When P2.5 exports high level, triode ON, buzzer sends chimes of doom.

More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; this utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed this utility model.The claimed scope of this utility model is defined by appending claims and equivalent thereof.

Claims

1. the automatic barrier controller of electronics wheelchair, it is characterized in that: comprise single-chip microcomputer, clock circuit, read/write circuit, tracking module, power circuit, display circuit, motor-drive circuit, warning circuit and infrared obstacle module, described single-chip microcomputer respectively with described clock circuit, described read/write circuit, described tracking module, described power circuit, described display circuit, described motor-drive circuit, described warning circuit and described infrared obstacle model calling, described single-chip microcomputer is the single-chip microcomputer of model STC89C52, described read/write circuit adopts model to be the processor of MAX3232, described tracking module adopts model to be the amplifier of LM393, three resistance, potentiometer, photosensitive tube and luminous tube composition, described motor-drive circuit adopts model to be the processor of L298N, described power circuit employing model is the voltage stabilizing chip of LM2567.