Method for detecting an error in a measurement cycle
First Claim
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1. A method of detecting an error in a measurement cycle comprising:
- wirelessly transmitting a sequence of electrical signals, sweeping through a predetermined frequency band, from a transmitter to a receiver of an electric evaluation circuit of a house hold appliance controller;
measuring levels of the signals;
calculating a parameter from the signal levels in the evaluation circuit, including;
determining a highest signal level at a resonant frequency;
determining a transmit frequency limit corresponding to a signal level that is lower than the highest signal level by a predetermined and stored signal level ratio;
determining a difference between the transmit frequency limit and the resonant frequency;
generating a pair of values from the highest signal level and said difference; and
calculating the parameter from the pair of values;
comparing the parameter to an upper and a lower limit; and
determining the quality of the measurement cycle as a function of the comparison.
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Abstract
A method of detecting an error in a measurement cycle. The method includes wirelessly transmitting a sequence of electrical signals sweeping through a predetermined frequency band from a transmitter to the receiver of an electric evaluation circuit of household appliance controller. The levels of the signals are measured, and a parameter is calculated from the signal levels in the evaluation circuit. The parameter is compared to an upper and lower limit, and the quality of the measurement cycle is determined as a function of the comparison.
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Citations
19 Claims
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1. A method of detecting an error in a measurement cycle comprising:
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wirelessly transmitting a sequence of electrical signals, sweeping through a predetermined frequency band, from a transmitter to a receiver of an electric evaluation circuit of a house hold appliance controller; measuring levels of the signals; calculating a parameter from the signal levels in the evaluation circuit, including; determining a highest signal level at a resonant frequency; determining a transmit frequency limit corresponding to a signal level that is lower than the highest signal level by a predetermined and stored signal level ratio; determining a difference between the transmit frequency limit and the resonant frequency; generating a pair of values from the highest signal level and said difference; and calculating the parameter from the pair of values; comparing the parameter to an upper and a lower limit; and determining the quality of the measurement cycle as a function of the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of detecting an error in a measurement cycle comprising:
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wirelessly transmitting a sequence of electrical signals, sweeping through a predetermined frequency band, from a transmitter to a receiver of an electric evaluation circuit of a house hold appliance controller; measuring levels of the signals; calculating a parameter from the signal levels in the evaluation circuit; comparing the parameter to an upper and a lower limit; and determining the quality of the measurement cycle as a function of the comparison, wherein, if the parameter is below the lower limit, further comprising; increasing at least one of the sensitivity of the receiver and the transmit power of the transmitter in a subsequent measurement cycle, or issuing a visual or audible error message to a user. - View Dependent Claims (14, 15, 16, 17)
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18. A method of detecting an error in a measurement cycle comprising:
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wirelessly transmitting a sequence of electrical signals, sweeping through a predetermined frequency band, from a transmitter to a receiver of an electric evaluation circuit of a house hold appliance controller; measuring levels of the signals; calculating a parameter from the signal levels in the evaluation circuit; comparing the parameter to an upper and a lower limit; and determining the quality of the measurement cycle as a function of the comparison, wherein, if the parameter is above the upper limit further comprising; decreasing at least one of the sensitivity of the receiver and the transmit power of the transmitter in a subsequent measurement cycle, or issuing an error message to a user. - View Dependent Claims (19)
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Specification