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伸缩臂挖掘机挖掘的深度丈量体系!

日期:2019-04-04   源头:http://www.degradedijital.com/
1.体系的集团布局
  1. The overall structure of the system
  硬件体系集团设计框图如图1所示,体系由主控模块、加快度模块、A/D转换模块和显现模块构成。此中加快度模块紧张用来及时检测掘客机伸缩臂的转动角度;A/D转换模块紧张用来将加快度模块及时检测到的掘客机伸缩臂转动角度仿照量转化为数字量;显现模块紧张用来及时显现所挖深度值。
  The overall design block diagram of the hardware system is shown in Figure 1. The system consists of the main control module, acceleration module, A/D conversion module and display module. Acceleration module is mainly used to detect the rotation angle of the telescopic arm of excavator in real time; A/D conversion module is mainly used to convert the simulation value of the rotation angle of the telescopic arm of excavator detected in real time by acceleration module into digital value; and display module is mainly used to display the excavated depth value in real time.
  因51单片机[2]具有外围电路约莫,硬件设计方便的特性,体系采取STC89c51单片机体系作为本体系的主控模块。体系软件主流程图如图2所示,体系起首抑制初始化,由于STC89C51单片机外部没有集成A/D转换模块,无法征求掘客机伸缩臂转动[3、4、5]角度信息,以是在单片机外部外接一个A/D转换模块,用于完成仿照量到数字量的转换。单片机读取转换后的数字量数据,抑制数据剖析谋略后在数码管上显现掘客的深度,此软件体系时时的循环,完成伸缩臂掘客愚钝能丈量掘客深度。
  Because 51 single-chip computer [2] has the characteristics of simple peripheral circuit and convenient hardware design, the system uses STC89c51 single-chip computer system as the main control module of the system. The main flow chart of the system software is shown in Figure 2. The initialization of the system is stopped at first. Because there is no integrated A/D conversion module in STC89C51 MCU, and it is impossible to collect the angle information of the telescopic arm rotation of excavator, an A/D conversion module is attached to the outside of the MCU to complete the conversion from analog quantity to digital quantity. The single chip computer reads the converted digital data, stops the data analysis and calculation, and shows the depth of excavation on the digital tube. The software system cycles from time to time to complete the intelligent measurement of excavation depth by telescopic boom excavator.
  2.体系的设计
  2. System Design
  (1)掘客深度检测原理
  (1) Detection principle of excavation depth
  (2)数据征求的完成
  (2) Completion of data acquisition
加长臂挖掘机租赁
  A/D转换器就是将输入的仿照的电信号转换成单片性可以大约识别的数字信号。依据体系精度的央求和征求数据的特性,本体系采取8位的ADC0804模块,它是全MOS中速A/D转换器,片内有三态数据输入锁存器,可以大约与单片机直接相连。当芯片的CS管脚信号为零时,芯片技艺正常变乱,WR由低到高时,A/D末端转换,一次转换的时间约莫是66~73个时钟周期。
  A/D converter is to convert the input analog electrical signal into digital signal which can be recognized by single chip computer. According to the requirement of system accuracy and the characteristics of data acquisition, the system uses an 8-bit ADC 0804 module, which is an all-MOS medium-speed A/D converter. It has three-state data output latches in the chip, and can be directly connected with the single chip computer. When the CS pin signal of the chip is zero, the chip can work normally. When the WR is from low to high, the A/D converts at the beginning. The time of one conversion is about 66-73 clock cycles.
  图4为数据征求硬件电路原理图。图中MMA7361为检测呆板臂转动的角度传感器,由于呆板臂在左右方向是壮实坚定,以是只采取了角度传感器X轴上输入的数据。将征求返来转头的转动角度颠末A/D转换就取得与之对应的数字量,单片机读取该数字量并颠末数据处置,就可以大约取得伸缩臂掘客机以后所掘客的深度。
  Fig. 4 is the schematic diagram of data acquisition hardware. MMA7361 is an angle sensor to detect the rotation of the manipulator. Since the manipulator is fixed in the left and right directions, only the data output from the X axis of the angle sensor is used. The rotation angle acquired is converted by A/D to obtain the corresponding digital quantity. The single chip computer reads the digital quantity and disposes of the data, so that the current excavation depth of the telescopic boom excavator can be obtained.
  (3)数据处置的软件完成
  (3) Software completion of data processing
  为数据处置的软件流程图,单片机读取数据并抑制处置。依据实践外形区分,当谋略出的数据为负值时,标明伸缩臂掘客机铲位于水平线上方,阐发伸缩臂掘客机没有掘客,以是数码管显现为0;当谋略出数据为正值时,标明伸缩臂掘客机铲位于水平线下方,阐挖掘客机曾经掘客了一定的深度,数码管显现谋略出的深度值。
  For the software flow chart of data processing, MCU reads data and stops processing. According to the judgment of practice, when the calculated data is negative, indicate that the shovel of telescopic boom excavator is above the level line, clarify that telescopic boom excavator has not been excavated, so the digital tube appears to be 0; when the calculated data is positive, indicate that telescopic boom excavator shovel is below the level line, clarify that the excavator has excavated a certain depth, and the depth calculated by digital tube display.

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