Pressure instrument with depth/altitude and time display
First Claim
1. A pressure instrument comprising:
- pressure detecting means for detecting external pressure outside of the pressure instrument;
measured data generating means for generating measured data corresponding to the external pressure detected by said pressure detecting means;
start/stop signal generating means for generating a measurement start signal and a measurement stop signal;
measurement-time counting means for obtaining measurement-time data representative of a time period between the time when the measurement start signal is generated by said start/stop signal generating means and the time when the measurement stop signal is generated by said start/stop signal generating means;
time detecting means for detecting whether or not the measurement-time data obtained by said measurement-time counting means is longer than a predetermined time period;
memory means for storing the measured data which are generated by said measured data generating means during the time period between the time when the start signal is generated and the time when the stop signal is generated with such storing of the measured data occurring only when said start/stop signal generating means has generated the measurement stop signal and said time detecting means has detected that the measurement-time data is longer than said predetermined time period; and
measured data display means for displaying the measured data stored in said memory means.
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Accused Products
Abstract
In a pressure instrument with depth/altitude and time display, a measurement time period from a starting instant up to a stopping instant of the time measurement is measured by measurement-time counting means, and also another measurement data is acquired by detecting pressures from the starting instant up to the stopping instant of the pressure measurement. After the measurements are taken and when a measurement stop signal is outputted, a determination is made whether or not the measured time periods are longer than a predetermined time period. If the measured time period is longer than a predetermined time period, this dive is regarded as one for which it is required to store a record, and then the measurement data acquired between the starting instant and the stopping instant of the measurement are stored in a memory. If, however, the measured time period is shorter than a predetermined time period, this dive is regarded as one for which it is not required to store a record, and then no measurement data is stored. Thus, although the measurement data acquired by SCUBA (self-contained under water breathing apparatus) diving are stored in the memory, the measurement data acquired by non-SCUBA diving with a diving time of 2 to 3 minutes are not stored in this pressure instrument, so that the memory can be more effectively utilized.
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Citations
35 Claims
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1. A pressure instrument comprising:
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pressure detecting means for detecting external pressure outside of the pressure instrument; measured data generating means for generating measured data corresponding to the external pressure detected by said pressure detecting means; start/stop signal generating means for generating a measurement start signal and a measurement stop signal; measurement-time counting means for obtaining measurement-time data representative of a time period between the time when the measurement start signal is generated by said start/stop signal generating means and the time when the measurement stop signal is generated by said start/stop signal generating means; time detecting means for detecting whether or not the measurement-time data obtained by said measurement-time counting means is longer than a predetermined time period; memory means for storing the measured data which are generated by said measured data generating means during the time period between the time when the start signal is generated and the time when the stop signal is generated with such storing of the measured data occurring only when said start/stop signal generating means has generated the measurement stop signal and said time detecting means has detected that the measurement-time data is longer than said predetermined time period; and measured data display means for displaying the measured data stored in said memory means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A pressure instrument comprising:
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pressure detecting means for detecting external pressure outside of the pressure instrument; switch means for providing a drive-start instruction and a drive-stop instruction for actuation of said pressure detecting means; water-depth data generating means for generating water-depth data corresponding to the external pressure detected by said pressure detecting means, when said pressure detecting means is being driven under control of said drive-start instruction of said switch means; detecting means for detecting the water-depth data generated by said water-depth data generating means being equal to, or smaller than a predetermined water-depth value; time counting means for counting time data while said detection means detects said water-depth data being equal to or smaller than said predetermined water-depth value; time detecting means responsive to said time data counted by said time counting means; memory means for storing water-depth data generated by said water-depth data generating means during a time period between the drive-start and drive-stop instructions only when the time detecting means detects that said time data has reached said predetermined time period; means for stopping driving of said pressure detecting means when the time detecting means has detected said time data which reaches said predetermined time period; and water-depth data display means for displaying the water-depth data stored in said memory means. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A pressure instrument comprising:
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pressure detecting means for detecting external pressure outside of the pressure instrument; water-depth data generating means for generating water-depth data corresponding to the external pressure detected by said pressure detecting means; water-depth data display means for displaying water-depth data generated by said water-depth data generating means; diving operation detecting means for detecting both dive-start and dive-stop operations; diving time data counting means for counting diving time data, with a counting operation by the diving time data counting means being commenced when the dive-start operation is detected by said diving operation detecting means, and the counting operation by the diving time data counting means being stopped when the dive-stop operation is detected by said diving operation detecting means; long time diving detecting means to carry out an operation for detecting whether or not the diving time data counted by said diving time data counting means exceed a predetermined time period, such operation being carried out every time when said diving operation detecting means detects the dive-stop operation; rest time counting means for counting rest time data, with a counting operation by said rest time data counting means being commenced from 0 when said long time detecting means detects that said diving time data is longer than said predetermined time period upon detection of the dive-stop operation by said diving operation detecting means, with the counting operation by said rest time data counting means being commenced from a value held in said rest time data counting means when said long time detecting means detects that the diving time data is not longer than said predetermined time period, and also the counting operation by said rest time counting means is stopped to produce the rest time data when said diving operation detecting means detects said dive-stop operation; and rest time data display means for displaying the rest time data counted by said rest time counting means. - View Dependent Claims (19, 20, 21)
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22. A pressure instrument comprising:
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pressure detecting means for detecting external pressure outside of the pressure instrument; externally operated switch means operated to set a reference pressure; pressure judging means for judging whether or not an initial external pressure is higher than a predetermined value, which pressure is detected by said pressure detecting means when said externally operated switch is operated; reference pressure selecting means for (a) selecting as the reference pressure said initial external pressure detected by said pressure detecting means, when said pressure judging means judges that said initial external pressure is lower than the predetermined value, and (b) selecting as the reference pressure a pre-set particular pressure, when said pressure judging means judges that said initial external pressure is higher than the predetermined value; water-depth data generating means for generating water-depth data corresponding to a difference between the external pressure detected by said pressure detecting means and pressure selected by said reference pressure selecting means, after the reference pressure has been selected by said reference pressure selecting means; and water-depth data displaying means for displaying water-depth data generated by said water-depth data generating means. - View Dependent Claims (23, 24)
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25. A pressure instrument comprising:
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pressure detecting means for detecting external pressure outside of the pressure instrument; externally operated switch means for setting a reference pressure; reference pressure storing means for storing the reference pressure which is detected by said pressure detecting means when said switch means is operated; water-depth data generating means for generating water-depth data corresponding to a difference between the external pressure detected by said pressure detecting means and said reference pressure; abnormal water-depth data judging means for judging whether or not water-depth data generated by said water-depth data generating means falls into a predetermined range; and reference pressure changing means for changing the reference pressure on the basis of pressure detected by said pressure detecting means when said abnormal water-depth data judging means judges that the water-depth data does not fall into the predetermined range. - View Dependent Claims (26, 27, 28, 29)
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30. A pressure instrument comprising:
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pressure detecting means for detecting external pressure outside of the pressure instrument; switch means for providing drive-start and drive-stop instructions for actuation of said pressure detecting means; altitude data generating means for generating altitude data corresponding to the external pressure detected by said pressure detecting means, when said pressure detecting means is being driven by said drive-start instruction of said switch means; detection means for detecting the altitude data generated by said altitude data generating means being equal to, or smaller than a predetermined altitude value; time counting means for counting time data while said detection means detects said altitude data equal to, or smaller than said predetermined altitude value; time detecting means responsive to said time data counted by said time counting means; memory means for storing altitude data generated by said altitude data generating means during a time period between the drive-start and drive-stop instructions only when the time detecting means detects that said time data has reached said predetermined time period; means for stopping driving of said pressure detecting means when the time detecting means detects that said time data has reached said predetermined time period; and altitude data display means for displaying the altitude data stored in said memory means. - View Dependent Claims (31, 32, 33, 34, 35)
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Specification