Abnormality determination device, conductive particle detecting device, and abnormality determination method

A conductive particle detecting device, comprising:

• electrodes in a non-conductive lubricant used for lubrication of a mechanical device, the electrodes being spaced apart from each other in the lubricant;
• an acquisition unit acquiring an electrical resistance value between the electrodes that varies depending on conductive particles collected by magnetic force in the lubricant;
• an abnormality determining unit determining whether there is an abnormality in the mechanical device based on a number of times the electrical resistance value acquired by the acquisition unit falls below a threshold;
• and
• an output unit outputting a result of a determination by the abnormality determining unit,
• wherein the acquisition unit acquires electrical resistance values between two or more pairs of electrodes in different combinations, and
• wherein the abnormality determining unit determines whether there is an abnormality in the mechanical device based on the number of times the electrical resistance values have fallen below the threshold.

An abnormality determination method performed by a computer used to control an abnormality determination device, the method comprising:

• controlling an acquisition unit of the device to acquire an electrical resistance value between electrodes in a non-conductive lubricant used for lubrication of a mechanical device, the electrodes being spaced apart from each other in the lubricant;
• controlling a determination unit of the device to determine whether there is an abnormality in the mechanical device based on a number of times the electrical resistance value acquired by the acquisition unit falls below a threshold;
• and
• controlling an output unit of the device to output a result of a determination made by the determination unit,
• wherein the acquisition unit acquires the electrical resistance value between the electrodes that varies depending on conductive particles collected by magnetic force in the lubricant,
• wherein the acquisition unit acquires electrical resistance values between two or more pairs of electrodes in different combinations, and
• wherein the determination unit determines whether there is an abnormality in the mechanical device based on the number of times the electrical resistance values have fallen below the threshold.