CN202602566U

CN202602566U - Power extension device of educational robot

Info

Publication number: CN202602566U
Application number: CN 201220090471
Authority: CN
Inventors: 刘睿涵
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-12
Filing date: 2012-03-12
Publication date: 2012-12-12
Anticipated expiration: 2022-03-12

Abstract

The utility model relates to a power extension device of an educational robot. An original motor is removed from output ends of an original robot H bridge circuit, that is, from both ends of the motor; a photoelectric coupler is formed by a D1 and a BG1, an R1 is a current-limiting resistor of the D1, and the R1 is also a current-limiting resistor of a D3; a BG1 and an R2 are upper bias resistors of a BG2; a B1 is an electromagnetic coil of a relay; a D2 protects the BG2; a K1 and a K2 are normally open contacts of the relay; the K1, the K2, a K3 and a K4 forms a new H bridge circuit; and a high-power DC motor is connected between an A' and a B'. The power extension device provided by the utility model adopts the new H bridge circuit, thereby being capable of connecting the high-power DC motor. As the voltage connected by the new H bridge circuit is high and the working current is large, thereby realizing power extension of the robot.

Description

A kind of educational robot power expansion device

Technical field

The utility model relates to a kind of power expansion device, particularly relates to a kind of power expansion device that is used for educational robot.

Background technology

At present, the educational robot that each school uses mostly is the small dry battery power supply, and electric power is too little, can not excavate robot potential and innovate.Motor output voltage like ZhiHuiTianXia transfer robot H bridge circuit is about 6V, and about electric current 70mA, power is little, can not drive the actuator that the bigger motor of power drives a big a little point load.

Summary of the invention

The purpose of the utility model just provides a kind of existing prior art defective that overcomes, with a kind of power expansion device of robot power expansion.

The technical scheme of the utility model realizes through following approach; It is made up of the identical circuit of two covers, promptly at the former H of robot bridge circuit output port, i.e. motor two ends; Pull down original motor; Form photoelectric coupling circuit by D1, BG1, R1 is the current-limiting resistance of D1, also is the current-limiting resistance of D3 simultaneously; BG1 and R2 are the last subsection resistance of BG2, and B1 is the solenoid of relay, and D2 protects BG2, and K1, K2 are the normally opened contact of relay; K1, K2, K3, K4 form a new H bridge circuit, between A ' B ', insert the high power DC motor.

The utility model adopts new H bridge circuit, can insert the high power DC motor, because new H bridge connects the voltage height, operating current is big, has realized the expansion of robot power.

Description of drawings

Fig. 1 is the circuit theory diagrams of the utility model.

Fig. 2 is new H bridge circuit schematic diagram.

Embodiment

Describe the embodiment of the utility model in detail below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model is realized by the identical circuit of two covers, promptly at the former H of robot bridge circuit output port; Be the motor two ends, pull down original motor, form photoelectric coupling circuit by D1, BG1; R1 is the current-limiting resistance of D1, also is the current-limiting resistance of D3 simultaneously; BG1 and R2 are the last subsection resistance of BG2, and B1 is the solenoid of relay, and D2 protects BG2; K1, K2 are the normally opened contact of relay, and it is identical that the face circuit is caught up with in effects such as following D3, BG3.When A for just, B when negative, the top circuit working, D1 is bright → BG1 conducting → BG2 conducting, K1, K2 are closed; When the negative B of A correct time, D3 is bright → BG3 conducting → BG4 conducting, and K3, K4 are closed.

As shown in Figure 2, K1, K2, K3, K4 form a new H bridge circuit, between A ' B ', insert the high power DC motor, and motor just changes when K1, the closed K3 of K2, K4 disconnection; When K1, K2 break off K3, K4 closure, the motor counter-rotating; When K1, K2, K3, K4 broke off, motor did not change.Because new H bridge connects the voltage height, operating current is big, has realized the expansion of robot power.

Concrete operation principle: when the positive B of the H of robot bridge output A was negative, the D1 conducting was luminous → and BG1 conducting → BG2 conducting → normally opened contact is by electromagnet B1 adhesive; When the H of robot bridge output A is negative, B correct time, the D3 conducting is luminous → and BG3 conducting → BG4 conducting → K3, K4 be by electromagnet B2 adhesive; K1, K2, K3, K4 form a new H bridge, realize reaching from the output of A ' B ' high-voltage large current the purpose of power expansion.

Claims

1. an educational robot power expansion device is characterized in that, it is that promptly original motor is pulled down at the motor two ends, forms photoelectric coupling circuit by D1, BG1 at the former H of robot bridge circuit output port, and R1 is the current-limiting resistance of D1, also is the current-limiting resistance of D3 simultaneously; BG1 and R2 are the last subsection resistance of BG2, and B1 is the solenoid of relay, and D2 protects BG2, and K1, K2 are the normally opened contact of relay; K1, K2, K3, K4 form a new H bridge circuit, between A ' B ', insert the high power DC motor.