- Hydraulic universal testing machine series
- Microcomputer controlled
- Microcomputer screen display type
- Digital display type
- WE-B type cylinder type
- Type WEW-D six column
- WAW-C worm electro-hydraulic servo
- Impact testing machine series
- Pendulum type impact
- The impact specimen notch broaching
- Impact specimen low temperature tank
- Impact specimen notch projector
- pendulum type impact
- Torsion testing machine series
- Material machine
- Wire torsion testing machine
- NDS series digital display
- metal wire
- wire winding tester
- NDW series microcomputer control material
- Spring testing machine series
- Manual double digital display
- Full automatic
- Computer controlled
- Spring torsion
- Spring fatigue
- Gas
- Pressure testing machine series
- Digital pressure
- Automatic pressure
- Manhole cover pressure
- microcomputer control constant
- electro hydraulic
- liquid crystal display type
- Steel strand testing machine
- Computer screen display
- Computer controlled
- vertical (horizontal) steel strand relaxation
- electro hydraulic servo
- screen display steel strand
- Ring steel test machine
- Microcomputer control
- Liquid crystal display
- liquid crystal display
- microcomputer control
- artificial board
- Artificial board universal
- manual artificial board
- artificial board scratch
- rolling wear
- artificial board universal
- falling ball impact
- Test machine parts
- Electronic extensometer
- DX-400 manual management
- Test machine parts -1
- Test machine parts -2
- Test machine parts -3
- Bending test machine
- reinforcing steel bar
- Steel tube
- Wire
- pipe bending
- reinforced bar
- double reinforced
电子拉力试验机的系统硬件设计
数据采集卡是该系统的关键部分,是传感器信号与拉力试验机上位机通讯的接口,它直接决定了系统的精度和可靠性。本电子拉力试验机系统要求数据采集卡的最低配置:采样频率为10kHz,分辨率为12位,一路模拟量输入,一路模拟量输出,两路数字量输出。
电子拉力试验机系统中使用它的一路模拟量输入从拉力传感器读取电压信号,使用它的一路模拟量输出驱动比例溢流阀,使用它的两路数字量输出分别驱动两个直流电磁阀。比例溢流阀的工作电压为DC5V,通过控制万能试验机电流大小来控制阀的开启大小,拉力试验机该比例溢流阀自带一块驱动板,其输入为DC0~5V,输出电压为DC5V,输出电流与输入电压成正比,电子拉力试验机将采集卡的模拟输出端接驱动扳输入,通过采集卡输出0~5V电压驱动比例溢流阀。
流电磁阀工作电压为DC24V,由于PCI1711的数字信号输出高电平为5V,不能直接驱动直流电磁阀,且采集卡输出功率有限,不能直接驱动5v继电器。
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