METHOD OF MEASURING CONTACT FAILURE AND CONTACT FAILURE MEASURING DEVICE
First Claim
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1. A contact fault measuring method of measuring whether or not there is a contact fault in a terminal fitting portion of a harness in a wiring system, comprising:
- placing a magnetic sensor in proximity to the harness to be measured; and
applying external forces to the terminal fitting portion of the harness to be measured, detecting, with the magnetic sensor, the magnitude of a transient response variation in an induced magnetic field around the harness at a timing at which the external forces are applied, and displaying the detected magnitude as an indicator of whether or not a contact state of the terminal fitting portion is acceptable.
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Abstract
In the disclosed method of measuring contact failure and contact failure measuring device, the magnitude of the excessive response fluctuation of the inductive magnetic field around a harness under measurement when an external force is applied to a terminal fitting part of the harness is detected by a magnetic sensor, and the result is displayed as an index of the quality of the contact state of the terminal fitting part.
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Citations
21 Claims
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1. A contact fault measuring method of measuring whether or not there is a contact fault in a terminal fitting portion of a harness in a wiring system, comprising:
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placing a magnetic sensor in proximity to the harness to be measured; and applying external forces to the terminal fitting portion of the harness to be measured, detecting, with the magnetic sensor, the magnitude of a transient response variation in an induced magnetic field around the harness at a timing at which the external forces are applied, and displaying the detected magnitude as an indicator of whether or not a contact state of the terminal fitting portion is acceptable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A contact fault measuring apparatus for measuring whether or not there is a contact fault in a terminal fitting portion of a harness in a wiring system, comprising:
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a magnetic sensor detachably fixed in a position proximal to the harness to be measured; a display unit for displaying the magnitude of a transient response variation in an induced magnetic field around the harness, which is represented by an output signal from the magnetic sensor at a timing at which external forces are applied to the terminal fitting portion of the harness to be measured, as an indicator of whether or not a contact state of the terminal fitting portion of the harness to be measured is acceptable. - View Dependent Claims (11, 12, 13)
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14. A contact fault measuring apparatus for measuring whether or not there is a contact fault in a terminal fitting portion of a harness in a wiring system, comprising:
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a magnetic sensor for detecting the magnitude of a transient response variation in an induced magnetic field around the harness to be measured; an external force detecting sensor for detecting the timing of external forces applied to the terminal fitting portion of the harness to be measured; and a display unit for displaying the timing of the applied external forces, which is detected by the external force detecting sensor, and the magnitude, which is represented by an output signal from the magnetic sensor, of the transient response variation in the induced magnetic field around the harness. - View Dependent Claims (16, 17)
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15. A contact fault measuring apparatus for measuring whether or not there is a contact fault in a terminal fitting portion of a harness in a wiring system, comprising:
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a magnetic sensor for detecting the magnitude of a transient response variation in an induced magnetic field around the harness to be measured; an external force detecting sensor for detecting the timing of external forces applied to the terminal fitting portion of the harness to be measured; a judgment section for judging whether or not the magnitude of the transient response variation in the induced magnetic field around the harness, which is represented by an output signal from the magnetic sensor, exceeds a threshold value for determining the occurrence of a contact fault in the terminal fitting portion; and a display unit for displaying a judgment result from the judgment section based on the timing of applied external forces detected by the external force detecting sensor. - View Dependent Claims (20, 21)
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18. A contact fault measuring method of measuring whether or not there is a contact fault in a terminal fitting portion of a harness in a wiring system, comprising:
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detecting, with a magnetic sensor, the intensity of an induced magnetic field around the harness to be measured; detecting, with an external force detecting sensor, external forces applied to the terminal fitting portion of the harness to be measured; simultaneously displaying, on a display unit, an output waveform from the magnetic sensor and an output waveform from the external force detecting sensor; and measuring the state of occurrence of a contact fault based on the magnitude of a variation in the output waveform from the magnetic sensor immediately after the external forces are applied, with respect to the output waveform from the magnetic sensor before the external forces are applied, or based on a gradient of the output waveform from the magnetic sensor immediately after the external forces are applied.
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19. A contact fault measuring method of measuring whether or not there is a contact fault in a terminal fitting portion of a harness in a wiring system, comprising:
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detecting, with a magnetic sensor, the intensity of an induced magnetic field around the harness to be measured, and outputting the detected intensity of the induced magnetic field to a judgment section; detecting, with an external force detecting sensor, external forces applied to the terminal fitting portion of the harness to be measured, and outputting the detected external forces to the judgment section; and measuring, with the judgment section, the state of occurrence of a contact fault based on a change in the intensity of the induced magnetic field immediately after the external forces are applied, with respect to the intensity of the induced magnetic field before the external forces are applied, or based on a rate of change in the intensity of the induced magnetic field immediately after the external forces are applied.
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Specification