CN103713635A - Intelligent trolley control system based on one-chip microcomputer - Google Patents

Intelligent trolley control system based on one-chip microcomputer Download PDF

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CN103713635A
CN103713635A CN201310658113.6A CN201310658113A CN103713635A CN 103713635 A CN103713635 A CN 103713635A CN 201310658113 A CN201310658113 A CN 201310658113A CN 103713635 A CN103713635 A CN 103713635A
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magnetic field
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潘绍明
高国伟
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Guangxi University of Science and Technology
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Abstract

本发明公开一种基于单片机智能小车控制系统,包括无线接收模块接收无线发送模块发送的遥控倾斜数据;传感器磁场检测模块用于检测其磁场分量,得出小车车头的方向;传感器加速模块用于检测其磁场分量,得出小车车的倾斜度;单片机控制系统用于根据无线接收模块、传感器磁场检测模块和传感器加速模块传输的数据,控制电机驱动模块旋转,控制小车行驶;电机驱动模块,接收单片机控制系统发出的命令信号,执行命令。本发明通过传感器磁场检测模块和传感器加速模块实现小车的智能控制。

Figure 201310658113

The invention discloses a control system for an intelligent car based on a single-chip microcomputer, which includes a wireless receiving module for receiving remote control tilt data sent by a wireless sending module; a sensor magnetic field detection module for detecting its magnetic field component to obtain the direction of the front of the car; a sensor acceleration module for detecting Its magnetic field component is used to obtain the inclination of the trolley; the single-chip microcomputer control system is used to control the rotation of the motor drive module and the driving of the trolley according to the data transmitted by the wireless receiving module, the sensor magnetic field detection module and the sensor acceleration module; the motor drive module receives the single-chip microcomputer The command signal sent by the control system executes the command. The invention realizes the intelligent control of the trolley through the sensor magnetic field detection module and the sensor acceleration module.

Figure 201310658113

Description

一种基于单片机智能小车控制系统A Control System of Intelligent Car Based on Single-chip Microcomputer

技术领域 technical field

本发明涉及一种小车控制系统,特别涉及一种基于单片机智能小车控制系统。 The invention relates to a trolley control system, in particular to an intelligent trolley control system based on a single-chip microcomputer.

  the

背景技术 Background technique

很多的手柄遥控玩具车对于使用者有较高的要求,通常要练习很长时间才能自如的操控,对于使用者的要求较高,在重力感应技术出现后,很多重力感应遥控车应运而生,可以通过遥控器的倾斜方便的对遥控车的运行状态进行控制。但是在实际的控制过程中还是存在一定的问题,比如:当车头朝向自己的时候,小车的运行方向和遥控器的倾斜方向总是不一致,使得遥控车的操作变得比较困难。 Many remote control toy cars with handles have high requirements for users. Usually, it takes a long time to practice to control them freely. The requirements for users are relatively high. After the emergence of gravity sensing technology, many gravity sensing remote control cars came into being. The running state of the remote control car can be conveniently controlled by tilting the remote control. However, there are still some problems in the actual control process. For example, when the front of the car is facing itself, the running direction of the car is always inconsistent with the tilting direction of the remote control, which makes the operation of the remote control car more difficult.

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发明内容 Contents of the invention

本发明提供一种基于单片机智能小车控制系统,它可以克服现有技术的不足,通过传感器磁场检测模块和传感器加速模块实现小车的智能控制。 The invention provides a single-chip microcomputer-based intelligent trolley control system, which can overcome the deficiencies of the prior art, and realize intelligent control of the trolley through a sensor magnetic field detection module and a sensor acceleration module.

本发明实施例提供的一种基于单片机智能小车控制系统,包括电源模块、传感器磁场检测模块、传感器加速模块、电机驱动模块、单片机控制系统、无线发送模块和无线接收模块; The embodiment of the present invention provides a single-chip microcomputer-based smart car control system, including a power supply module, a sensor magnetic field detection module, a sensor acceleration module, a motor drive module, a single-chip microcomputer control system, a wireless transmission module and a wireless reception module;

无线接收模块接收无线发送模块发送的遥控倾斜数据; The wireless receiving module receives the remote control tilt data sent by the wireless sending module;

传感器磁场检测模块用于检测其磁场分量,得出小车车头的方向; The sensor magnetic field detection module is used to detect its magnetic field component to obtain the direction of the front of the car;

传感器加速模块用于检测其磁场分量,得出小车车的倾斜度; The sensor acceleration module is used to detect its magnetic field component to obtain the inclination of the car;

单片机控制系统用于根据无线接收模块、传感器磁场检测模块和传感器加速模块传输的数据,控制电机驱动模块旋转,控制小车行驶; The single-chip microcomputer control system is used to control the rotation of the motor drive module and the driving of the car according to the data transmitted by the wireless receiving module, the sensor magnetic field detection module and the sensor acceleration module;

电机驱动模块,接收单片机控制系统发出的命令信号,执行命令。 The motor drive module receives the command signal sent by the single-chip microcomputer control system and executes the command.

所述电源模块为线性电源、开关电源或锂电池。 The power module is a linear power supply, a switching power supply or a lithium battery.

所述单片机控制系统的主芯片采用大规模可编程逻辑器件、增强型51内核的单片机或ARM系列单片机。 The main chip of the single-chip microcomputer control system adopts a large-scale programmable logic device, an enhanced 51-core single-chip microcomputer or an ARM series single-chip microcomputer.

所述电机驱动模块采用分立元件搭桥或集成芯片。 The motor drive module adopts discrete component bridges or integrated chips.

所述电机驱动模块中的电机采用步进电机或直流电机。 The motor in the motor drive module is a stepping motor or a DC motor.

所述传感器磁场检测模块采用单轴磁场传感器检测模块、双轴磁场传感器检测模块或三轴磁场传感器检测模块。 The sensor magnetic field detection module adopts a single-axis magnetic field sensor detection module, a dual-axis magnetic field sensor detection module or a three-axis magnetic field sensor detection module.

所述传感器加速模块采用单轴磁场传感器加速模块、双轴磁场传感器加速模块或三轴磁场传感器加速模块。 The sensor acceleration module adopts a single-axis magnetic field sensor acceleration module, a dual-axis magnetic field sensor acceleration module or a three-axis magnetic field sensor acceleration module.

本发明提供的一种基于单片机智能小车控制系统,通过传感器磁场检测模块和传感器加速模块,实时、准确掌握小车的运行方向,实现小车的智能控制。 The present invention provides an intelligent car control system based on a single-chip microcomputer. Through a sensor magnetic field detection module and a sensor acceleration module, the running direction of the car can be grasped in real time and accurately, and the intelligent control of the car can be realized.

  the

附图说明 Description of drawings

图1为本发明实施例提供的一种基于单片机智能小车控制系统的示意图。 Fig. 1 is a schematic diagram of a smart car control system based on a single-chip microcomputer provided by an embodiment of the present invention.

  the

具体实施方式 Detailed ways

下面对本发明实施例的具体实施方式进行详细描述: The specific implementation manner of the embodiment of the present invention is described in detail below:

本发明实施例提供的一种基于单片机智能小车控制系统,如图1所示,包括电源模块、传感器磁场检测模块、传感器加速模块、电机驱动模块、单片机控制系统、无线发送模块和无线接收模块; The embodiment of the present invention provides a smart car control system based on a single-chip microcomputer, as shown in Figure 1, including a power supply module, a sensor magnetic field detection module, a sensor acceleration module, a motor drive module, a single-chip microcomputer control system, a wireless transmission module and a wireless reception module;

无线接收模块接收无线发送模块发送的遥控倾斜数据; The wireless receiving module receives the remote control tilt data sent by the wireless sending module;

传感器磁场检测模块用于检测其磁场分量,得出小车车头的方向; The sensor magnetic field detection module is used to detect its magnetic field component to obtain the direction of the front of the car;

传感器加速模块用于检测其磁场分量,得出小车车的倾斜度; The sensor acceleration module is used to detect its magnetic field component to obtain the inclination of the car;

单片机控制系统用于根据无线接收模块、传感器磁场检测模块和传感器加速模块传输的数据,控制电机驱动模块旋转,控制小车行驶; The single-chip microcomputer control system is used to control the rotation of the motor drive module and the driving of the car according to the data transmitted by the wireless receiving module, the sensor magnetic field detection module and the sensor acceleration module;

电机驱动模块,接收单片机控制系统发出的命令信号,执行命令。 The motor drive module receives the command signal sent by the single-chip microcomputer control system and executes the command.

所述电源模块为线性电源、开关电源或锂电池。 The power module is a linear power supply, a switching power supply or a lithium battery.

所述单片机控制系统的主芯片采用大规模可编程逻辑器件、增强型51内核的单片机或ARM系列单片机。 The main chip of the single-chip microcomputer control system adopts a large-scale programmable logic device, an enhanced 51-core single-chip microcomputer or an ARM series single-chip microcomputer.

所述电机驱动模块采用分立元件搭桥或集成芯片。 The motor drive module adopts discrete component bridges or integrated chips.

所述电机驱动模块中的电机采用步进电机或直流电机。 The motor in the motor drive module is a stepping motor or a DC motor.

所述传感器磁场检测模块采用单轴磁场传感器检测模块、双轴磁场传感器检测模块或三轴磁场传感器检测模块。 The sensor magnetic field detection module adopts a single-axis magnetic field sensor detection module, a dual-axis magnetic field sensor detection module or a three-axis magnetic field sensor detection module.

所述传感器加速模块采用单轴磁场传感器加速模块、双轴磁场传感器加速模块或三轴磁场传感器加速模块。 The sensor acceleration module adopts a single-axis magnetic field sensor acceleration module, a dual-axis magnetic field sensor acceleration module or a three-axis magnetic field sensor acceleration module.

本申请基于51内核的单片机STC89C52RC,制作了简单的遥控小车底盘,其原理是通过遥控器上的三轴磁场传感器和三轴加速传感器来测量遥控器的倾斜程度、倾斜方向来计算倾斜方向与地磁南极的夹角,通过无线发送装置将遥控器的地里倾斜方向数据发送给遥控车,遥控车通过自身的三轴磁场传感器和三轴加速传感器测得小车车头朝向数据做对比,通过分析两组数据来确定遥控车的目前状态和将要运动的状态。 This application is based on the 51-core microcontroller STC89C52RC, and has produced a simple remote control car chassis. The principle is to measure the tilt degree and tilt direction of the remote control through the three-axis magnetic field sensor and three-axis acceleration sensor on the remote control to calculate the tilt direction and geomagnetism. The included angle of the South Pole, through the wireless transmission device, sends the data of the inclination direction of the remote controller to the remote control car. The data is used to determine the current state and the state of the remote control car.

其核心技术是一个无论怎么倾斜都可以精确只是南方的指南针。传感器采用GY-80 BMPO085 九轴IMU磁场加速度陀螺仪大气压强模块,此模块高度集成,采用IIC通信,可以方便与单片机链接。此技术具有广阔的应用前景,比如汽车的遥控泊车、无人飞机的飞行姿态控制等等各种需要人工遥控或者自动控制的智能设备。 Its core technology is a compass that can be exactly south no matter how tilted it is. The sensor adopts the GY-80 BMPO085 nine-axis IMU magnetic field acceleration gyroscope atmospheric pressure module. This module is highly integrated and uses IIC communication, which can be easily linked with the microcontroller. This technology has broad application prospects, such as remote parking of cars, flight attitude control of unmanned aircraft, and other smart devices that require manual remote control or automatic control.

本发明提供的一种基于单片机智能小车控制系统,通过传感器磁场检测模块和传感器加速模块,实时、准确掌握小车的运行方向,实现小车的智能控制。 The present invention provides an intelligent car control system based on a single-chip microcomputer. Through a sensor magnetic field detection module and a sensor acceleration module, the running direction of the car can be grasped in real time and accurately, and the intelligent control of the car can be realized.

  the

通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到本发明可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述的方法。 Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is a better implementation Way. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a A computer device (which may be a personal computer, a server, or a network device, etc.) executes the methods described in various embodiments of the present invention.

以上公开的仅为本发明的几个具体实施例,但是,本发明并非局限于此,任何本领域的技术人员能思之的变化都应落入本发明的保护范围。 The above disclosures are only a few specific embodiments of the present invention, however, the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (7)

1.一种基于单片机智能小车控制系统,其特征在于,包括电源模块、传感器磁场检测模块、传感器加速模块、电机驱动模块、单片机控制系统、无线发送模块和无线接收模块; 1. A kind of intelligent dolly control system based on single-chip microcomputer, is characterized in that, comprises power supply module, sensor magnetic field detection module, sensor acceleration module, motor drive module, single-chip microcomputer control system, wireless sending module and wireless receiving module; 无线接收模块接收无线发送模块发送的遥控倾斜数据; The wireless receiving module receives the remote control tilt data sent by the wireless sending module; 传感器磁场检测模块用于检测其磁场分量,得出小车车头的方向; The sensor magnetic field detection module is used to detect its magnetic field component to obtain the direction of the front of the car; 传感器加速模块用于检测其磁场分量,得出小车车的倾斜度; The sensor acceleration module is used to detect its magnetic field component to obtain the inclination of the car; 单片机控制系统用于根据无线接收模块、传感器磁场检测模块和传感器加速模块传输的数据,控制电机驱动模块旋转,控制小车行驶; The single-chip microcomputer control system is used to control the rotation of the motor drive module and the driving of the car according to the data transmitted by the wireless receiving module, the sensor magnetic field detection module and the sensor acceleration module; 电机驱动模块,接收单片机控制系统发出的命令信号,执行命令。 The motor drive module receives the command signal sent by the single-chip microcomputer control system and executes the command. 2.根据权利要求1所述的一种基于单片机智能小车控制系统,其特征在于,所述电源模块为线性电源、开关电源或锂电池。 2. A kind of intelligent car control system based on a single-chip microcomputer according to claim 1, wherein the power supply module is a linear power supply, a switching power supply or a lithium battery. 3.根据权利要求1所述的一种基于单片机智能小车控制系统,其特征在于,所述单片机控制系统的主芯片采用大规模可编程逻辑器件、增强型51内核的单片机或ARM系列单片机。 3. a kind of intelligent dolly control system based on single-chip microcomputer according to claim 1, is characterized in that, the main chip of described single-chip microcomputer control system adopts the single-chip microcomputer of large-scale programmable logic device, enhanced 51 cores or ARM series single-chip microcomputer. 4.根据权利要求1所述的一种基于单片机智能小车控制系统,其特征在于,所述电机驱动模块采用分立元件搭桥或集成芯片。 4. A kind of intelligent car control system based on single-chip microcomputer according to claim 1, characterized in that, the motor drive module adopts discrete component bridge or integrated chip. 5.根据权利要求4所述的一种基于单片机智能小车控制系统,其特征在于,所述电机驱动模块中的电机采用步进电机或直流电机。 5. A kind of intelligent car control system based on a single-chip microcomputer according to claim 4, wherein the motor in the motor drive module adopts a stepping motor or a DC motor. 6.根据权利要求1所述的一种基于单片机智能小车控制系统,其特征在于,所述传感器磁场检测模块采用单轴磁场传感器检测模块、双轴磁场传感器检测模块或三轴磁场传感器检测模块。 6. A kind of intelligent car control system based on a single-chip microcomputer according to claim 1, wherein the sensor magnetic field detection module adopts a single-axis magnetic field sensor detection module, a biaxial magnetic field sensor detection module or a three-axis magnetic field sensor detection module. 7.根据权利要求1所述的一种基于单片机智能小车控制系统,其特征在于,所述传感器加速模块采用单轴磁场传感器加速模块、双轴磁场传感器加速模块或三轴磁场传感器加速模块。 7. The smart car control system based on a single-chip microcomputer according to claim 1, wherein the sensor acceleration module adopts a single-axis magnetic field sensor acceleration module, a dual-axis magnetic field sensor acceleration module or a three-axis magnetic field sensor acceleration module.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104900040A (en) * 2015-06-25 2015-09-09 苏州工业职业技术学院 Control device of Internet-of-Things technology based cold-chain logistics trolley
CN105631631A (en) * 2015-12-25 2016-06-01 芜湖众创物流投资中心(有限合伙) A new type of intelligent monitoring and management system for logistics vehicles
CN107942413A (en) * 2017-10-27 2018-04-20 中国水利水电科学研究院 A kind of rainfall evenness test device and test method
CN108415426A (en) * 2018-02-09 2018-08-17 深圳市七布创新科技有限公司 A kind of mobile control system and method

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0363516A (en) * 1989-07-31 1991-03-19 Seibutsukei Tokutei Sangyo Gijutsu Kenkyu Suishin Kiko Azimuth detecting device for field working vehicle
CN1472044A (en) * 2003-06-05 2004-02-04 上海交通大学 tightrope walker
EP1475610A1 (en) * 2003-05-06 2004-11-10 Harman/Becker Automotive Systems GmbH Remote vehicle control
CN101089556A (en) * 2006-06-16 2007-12-19 三星电子株式会社 Moving apparatus, method, and medium for compensating position of the moving apparatus
CN101134147A (en) * 2007-09-24 2008-03-05 台南科技大学 Intelligent remote control system
CN201566512U (en) * 2009-12-09 2010-09-01 西安理工大学 Intelligent car based on attitude detection and control
CN202083962U (en) * 2010-12-08 2011-12-21 合发微系统科技股份有限公司 A toy controller and its signal processing device
CN102566781A (en) * 2010-12-08 2012-07-11 合发微系统科技股份有限公司 Apparatus and method for controlling motion of a target object
CN103177545A (en) * 2011-12-26 2013-06-26 联想(北京)有限公司 Remote controller, mobile equipment and method for controlling mobile equipment by using remote controller
CN103411605A (en) * 2013-07-31 2013-11-27 重庆大学 Vehicle-mounted non-blind-area positioning navigation and travel posture measuring device and measuring method

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0363516A (en) * 1989-07-31 1991-03-19 Seibutsukei Tokutei Sangyo Gijutsu Kenkyu Suishin Kiko Azimuth detecting device for field working vehicle
EP1475610A1 (en) * 2003-05-06 2004-11-10 Harman/Becker Automotive Systems GmbH Remote vehicle control
CN1472044A (en) * 2003-06-05 2004-02-04 上海交通大学 tightrope walker
CN101089556A (en) * 2006-06-16 2007-12-19 三星电子株式会社 Moving apparatus, method, and medium for compensating position of the moving apparatus
CN101134147A (en) * 2007-09-24 2008-03-05 台南科技大学 Intelligent remote control system
CN201566512U (en) * 2009-12-09 2010-09-01 西安理工大学 Intelligent car based on attitude detection and control
CN202083962U (en) * 2010-12-08 2011-12-21 合发微系统科技股份有限公司 A toy controller and its signal processing device
CN102566781A (en) * 2010-12-08 2012-07-11 合发微系统科技股份有限公司 Apparatus and method for controlling motion of a target object
CN103177545A (en) * 2011-12-26 2013-06-26 联想(北京)有限公司 Remote controller, mobile equipment and method for controlling mobile equipment by using remote controller
CN103411605A (en) * 2013-07-31 2013-11-27 重庆大学 Vehicle-mounted non-blind-area positioning navigation and travel posture measuring device and measuring method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104900040A (en) * 2015-06-25 2015-09-09 苏州工业职业技术学院 Control device of Internet-of-Things technology based cold-chain logistics trolley
CN105631631A (en) * 2015-12-25 2016-06-01 芜湖众创物流投资中心(有限合伙) A new type of intelligent monitoring and management system for logistics vehicles
CN107942413A (en) * 2017-10-27 2018-04-20 中国水利水电科学研究院 A kind of rainfall evenness test device and test method
CN108415426A (en) * 2018-02-09 2018-08-17 深圳市七布创新科技有限公司 A kind of mobile control system and method

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