 |
This is a good waveform |
 View larger image
 Download this waveform file for use with PicoScope
Anti Lock Braking Sensor (ABS) Waveform Notes
The Anti-lock Braking System (ABS) relies upon information coming in from the sensors fitted to the hub assemblies.
If under heavy braking the ABS Electronic Control Module (ECM) loses a signal from one of the road wheels, it assumes that the wheel has locked and releases that brake momentarily until it sees the signal return. It is therefore imperative that the sensors are capable of providing a signal to the ABS ECM.
The operation of an ABS sensor is not unlike that of a crank angle sensor, using a small pick-up that is affected by the movement of a phonic wheel, moving in close proximity. The relationship between the phonic wheel and the sensor result in the production of a continuous Alternating Current (AC) ‘sine wave’ that can be monitored on an oscilloscope. The sensor, recognisable by its two electrical connections (some may have a coaxial braided outer shield) will produce an output that can be monitored and measured on the oscilloscope.
汽車診斷 | 汽車診斷儀 | 汽車故障診斷儀 | 汽車測試儀 | 汽車分析儀 | 汽車診斷示波器 | 汽車電路測試儀 | 汽車電路分析儀 | 發(fā)動(dòng)機(jī)分析儀 | 發(fā)動(dòng)機(jī)綜合分析儀 | 發(fā)動(dòng)機(jī)檢測中心 | 點(diǎn)火分析儀 | 點(diǎn)火測試儀 | 汽車傳感器測試儀 | CAN總線示波器 | LIN總線示波器 | 汽車故障記錄儀 | 汽車傳感器分析儀 | 汽車檢測儀 | 噴油嘴測試儀 | 點(diǎn)火線圈測試儀 | 蓄電池測試儀 | 發(fā)電機(jī)測試儀 | 起動(dòng)機(jī)測試儀 | ABS傳感器測試儀 | ECU測試儀 | ECM測試儀 | 進(jìn)氣真空/壓力測試儀 | 排氣壓力測試儀 | 汽車技術(shù)培訓(xùn) | 爆震傳感器測試儀 | 缺火測試儀 | 缺缸測試儀 | 線路測試儀 | 引出線 | 汽車數(shù)字示波器 | 真空傳感器 | 高壓感應(yīng)測試頭 | 無分電器點(diǎn)火測試頭 | 獨(dú)立點(diǎn)火（COP）感應(yīng)測試頭 | 漏電測試儀 | 氣缸相對壓縮測試 | 電腦測試儀 | 發(fā)動(dòng)機(jī)控制器測試儀 | 泄漏測試儀 | 熒光檢漏 | 超聲波檢漏 | 汽車數(shù)字萬用表 | 電流鉗表 | 電流勾表 | 點(diǎn)火正時(shí)燈 |
