Leak-detection device, program, and control method
First Claim
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1. A leak inspection device comprising:
- a processor;
a memory storing code that the processor executes to;
causes an acquisition hardware device to acquire a signal;
extract, as an inspection signal, a signal in any of a plurality of partial inspection frequency bands obtained by dividing a frequency band as an inspection target, from the signal acquired; and
sequentially determine whether the inspection signals corresponding to the partial inspection frequency bands which are different from one another indicate a leak or not and, when predetermined number or more of the inspection signals do not indicate a leak, determining that there is no leak, by;
determining, via a partial determination process, whether the inspection signal corresponding to one partial inspection frequency band indicates a leak or not; and
performing an overall determination process of sequentially selecting one of the plurality of partial inspection frequency bands and sequentially making the partial determination process operate in correspondence with the selected partial inspection frequency band until the partial determination process determines that the predetermined number or more of the inspection signals do not indicate a leak.
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Abstract
A signal acquisition unit (2020) acquires a signal. From the signal acquired by the signal acquisition unit (2020), a detection signal extraction unit (2060) extracts, as a detection signal, a signal of any frequency band among a plurality of partial detection frequency bands into which the frequency band that is the subject of detection has been divided. A determination unit (2070) determines, in order, for each detection signal corresponding to each of the different partial detection frequency bands, whether the detection signal shows any leakage, and if at least a prescribed number of the detection signals are not showing any leakage, determines that leakage is not taking place.
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Citations
12 Claims
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1. A leak inspection device comprising:
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a processor; a memory storing code that the processor executes to; causes an acquisition hardware device to acquire a signal; extract, as an inspection signal, a signal in any of a plurality of partial inspection frequency bands obtained by dividing a frequency band as an inspection target, from the signal acquired; and sequentially determine whether the inspection signals corresponding to the partial inspection frequency bands which are different from one another indicate a leak or not and, when predetermined number or more of the inspection signals do not indicate a leak, determining that there is no leak, by; determining, via a partial determination process, whether the inspection signal corresponding to one partial inspection frequency band indicates a leak or not; and performing an overall determination process of sequentially selecting one of the plurality of partial inspection frequency bands and sequentially making the partial determination process operate in correspondence with the selected partial inspection frequency band until the partial determination process determines that the predetermined number or more of the inspection signals do not indicate a leak. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A non-transitory computer-readable storage medium storing a program causing a computer to have a function of operating as a leak inspection device, and causing the computer to have:
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a signal acquisition function of acquiring a signal; an inspection signal extraction function of extracting, as an inspection signal, a signal in any of a plurality of partial inspection frequency bands obtained by dividing a frequency band as an inspection target from the signal acquired by the signal acquisition function; and a determination function of sequentially determining whether the inspection signals corresponding to the partial inspection frequency bands which are different from one another indicate a leak or not and, when predetermined number or more of the inspection signals do not indicate a leak, determining that there is no leak, wherein the determination function includes; a partial determination function determining whether the inspection signal corresponding to one partial inspection frequency band indicates a leak or not; and an overall determination function performing an overall determination process of sequentially selecting one of the plurality of partial inspection frequency bands and sequentially making the partial determination function operate in correspondence with the selected partial inspection frequency band until the partial determination function determines that the predetermined number or more of the inspection signals do not indicate a leak.
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12. A control method executed by a computer operating as a leak inspection device, comprising:
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acquiring a signal; extracting, as an inspection signal, a signal in any of a plurality of partial inspection frequency bands obtained by dividing a frequency band as an inspection target, from the signal acquired in the signal acquisition; and determining sequentially whether the inspection signals corresponding to the partial inspection frequency bands which are different from one another indicate a leak or not and, when predetermined number or more of the inspection signals do not indicate a leak, determining that there is no leak, wherein the determining includes; determining, via a partial determination process, whether the inspection signal corresponding to one partial inspection frequency band indicates a leak or not; and performing an overall determination process of sequentially selecting one of the plurality of partial inspection frequency bands and sequentially making the partial determination process operate in correspondence with the selected partial inspection frequency band until the partial determination process determines that the predetermined number or more of the inspection signals do not indicate a leak.
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Specification