Vehicle height detecting system
First Claim
1. A vehicle height detecting system comprising:
- a vehicle height sensor including a switching circuit which is turned on and off in accordance with a vehicle height;
means for outputting a drive signal to the vehicle height sensor for activating the vehicle height sensor;
connection means connected to an output side of the switching circuit;
means for receiving a digital vehicle height data signal from the switching circuit via the connection means;
means for generating a check signal to detect a break and a short circuit of the connection means;
means for outputting a preset signal of a first level and a preset signal of a second level to the connection means in response to the check signal and the drive signal, the first-level signal representing first preset check data, the second-level signal representing second preset check data;
means for receiving the first-level signal and the second-level signal from the connection means and reading the first check data and the second check data from the first-level signal and the second-level signal,means for, when the first-level signal is outputted to the connection means, first comparing the read first check data with a first predetermined reference data and judging whether or not a break is present in the connection means as a result of the first comparison; and
means for, when the second-level signal is outputted to the connection means, second comparing the read second check data with a second predetermined reference data and judging whether or not a short circuit is present in the connection means as a result of the second comparison.
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Accused Products
Abstract
A vehicle height sensor includes a switching circuit which is turned on and off in accordance with a vehicle height. When a drive signal is outputted to the vehicle height sensor, the vehicle height sensor is activated. A connector is connected to an output side of the switching circuit. A digital vehicle height data signal is transmitted from the switching circuit via the connector. A preset signal is outputted from the vehicle height sensor to the connector when a check signal is generated. The preset signal represents preset check data. A data receives the preset signal via the connector and reads the check data from the preset signal. The read check data is compared with a predetermined reference data. The connector is judged to be wrong when the read check data differs from the reference data.
11 Citations
14 Claims
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1. A vehicle height detecting system comprising:
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a vehicle height sensor including a switching circuit which is turned on and off in accordance with a vehicle height; means for outputting a drive signal to the vehicle height sensor for activating the vehicle height sensor; connection means connected to an output side of the switching circuit; means for receiving a digital vehicle height data signal from the switching circuit via the connection means; means for generating a check signal to detect a break and a short circuit of the connection means; means for outputting a preset signal of a first level and a preset signal of a second level to the connection means in response to the check signal and the drive signal, the first-level signal representing first preset check data, the second-level signal representing second preset check data; means for receiving the first-level signal and the second-level signal from the connection means and reading the first check data and the second check data from the first-level signal and the second-level signal, means for, when the first-level signal is outputted to the connection means, first comparing the read first check data with a first predetermined reference data and judging whether or not a break is present in the connection means as a result of the first comparison; and means for, when the second-level signal is outputted to the connection means, second comparing the read second check data with a second predetermined reference data and judging whether or not a short circuit is present in the connection means as a result of the second comparison. - View Dependent Claims (2, 3, 4, 5, 6)
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7. The vehicle height detecting system comprising:
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a vehicle height sensor including a switching circuit which is turned on and off in accordance with a vehicle height; means for outputting a drive signal to the vehicle height sensor for activating the vehicle height sensor; connection means connected to an output side of the switching circuit; means for receiving a digital vehicle height data signal from the switching circuit via the connection means; means for generating a check signal to detect a break in the connection means; means, included in the vehicle height sensor, for outputting a preset signal to the connection means in response to the check signal, the preset signal representing preset check data; means for receiving the preset signal from the connection means and reading the check data from the preset signal; and means for, when the preset signal is outputted to the connection means, comparing the read check data with a predetermined reference data and judging whether or not a break is present in the connection means as a result of the comparison. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification