Winch sensor depth error processing method

Release time:2019-10-12

The depth error does not necessarily mean that the winch sensor has failed.
1. The depth is not accurate. When the hook is running up and down, the same distance measurement winch pulse is different, indicating that the downlink or uplink speed is inconsistent, and even the depth has a jump phenomenon.
1) First judge the software: check the basic data of the winch sensor, that is, the hook height parameter: whether the diameter of the drum, the number of layers, the number of layers, the number of large strands, the number of final turns, the diameter of the big rope, etc. are consistent with the actual, if not Matching will cause depth errors. Troubleshooting: Set the hook height parameter as it is. If there is no problem with the software settings, then judge the hardware.
2) Interface: If the hook can collect data on the uplink and downlink, the general module has no problem; if the module has been replaced or set in the middle, the module may be set incorrectly:
(1) The acquisition rate is incorrect.
(2) Pulse pulse width and peak height setting are inappropriate
(3) The module impedance mismatch will produce a missing pulse phenomenon.
Troubleshooting: (1) set the module acquisition rate; (2) reset the pulse width and peak height (generally high level is 2.4V low level is 0.8V); (3) replace the acquisition module.
3) Sensors:
Fault judgment: there is a problem with the winch sensor
(1) The circuit has a virtual connection or short circuit
(2) The sensor sensor is dirty and the induced signal is disordered.
(1) Check the line joints to ensure good contact. Sometimes the drilling team cleaning will cause the line joints to enter the water and produce a weak short circuit. The multimeter can be used to measure whether the power supply voltage is +5V;
(2) Disassemble the sensor to remove internal rust and dirt;
(3) Replace the winch sensor.
2. The winch indicator light is only blinking, and it cannot count or judge the up and down directions.
Fault judgment:
(1) The winch sensor has a set of counting signals and there is a problem with the line;
(2) Hall element damage, one of which fails.
(1) Check the line, measure the line voltage with a multimeter, and measure the short circuit and open circuit in the power off state;
(2) Replace the winch sensor.
3. The computer can't collect the winch signal. The multimeter measures the winch sensor well, the power supply is normal, and the output signal is normal.
Fault judgment:
(1) Use the Adam program to detect the winch pulse. If there is no winch pulse, the acquisition module is damaged. (2) Use the Adam program to detect the winch pulse. If there is a winch pulse and the pulse number per rotation is consistent with the sensor parameters, the acquisition module has no problem, it may be software setting. Problem or collection program problem.
Troubleshooting: (1) replace the acquisition module; (2) set or update the acquisition software as required.

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