JPH0649966U - Ultrasonic tide gauge - Google Patents

Abstract

(57) [Summary] [Purpose] It is easy to handle and install, and the absolute value of the tide level can be easily obtained after measurement without correcting the measurement value. [Structure] Oscillation amplification circuit 2, power amplification circuit 3, signal reception circuit 5, reception amplification circuit 4, and sound velocity correction for ultrasonically measuring the distance from the transducer 6 surface to the sea surface. In an ultrasonic type tide gauge equipped with a series of circuits such as a temperature input circuit 8 for receiving, a receiving memory circuit 7 for storing the output of the signal amplifying circuit 4 and a distance measurement by the ultrasonic wave by taking in the contents of the receiving memory circuit 7 Set the reference value by matching the value with the tidal value obtained by another means such as surveying or tide table, set the reference value, calculate the difference between the subsequently obtained measurement data and this reference value, and obtain the tidal value by the amount of change C
In addition to the PU peripheral circuit 1, the transducer 6 is characterized in that the lower end portion is inserted into the sea and is installed at the upper end portion of the vertically installed hype 15 to be exposed from the sea surface.

Description

[Detailed description of the device]       [0001]     [Industrial application]   The present invention is an ultrasonic wave that can be easily installed on the quay and automatically measure the tide level. It is a type tide gauge.       [0002]     [Conventional technology]   Conventionally, tide gauges (tide gauges) for tide level observation have been float type, pressure type, ultrasonic wave type. There are various formulas, but most of them require calibration of data after measurement, As for the installation method, such as using wells or installing it on the seabed, it is accompanied by civil engineering work and handling At present, there are many complicated things that lack convenience in use. Therefore, the tide level No post hoc calibration of the data to determine the value is needed and accurate tide level values are obtained directly. In addition, there are still few tide gauges that can be installed very easily when used.       [0003]     [Problems to be solved by the device]   Conventional tide gauges need to be calibrated after measuring the measured data, as described above. The installation method also had a problem with civil engineering work. The present invention solves the conventional problems and requires human power. It is possible to directly obtain the exact tide position without calibration after measurement by It can be installed very easily when used.       [0004]     [Means for solving problems]   The present invention is designed to insert a transducer into the upper end of a hype that is installed vertically by inserting the lower end into the sea. Is installed to configure the sensor unit, and the distance from the transducer surface to the sea surface at a certain time Oscillation amplification circuit, power amplification circuit, signal reception circuit for measuring separation by ultrasonic waves , A signal amplification circuit, a temperature input circuit for sound velocity correction, etc. In a sound wave tide gauge, a reception memory circuit that stores the output of the signal amplification circuit and a reception memory circuit Taking in the contents of the memory circuit, the distance measurement value and survey by the ultrasonic wave, the tide table, etc. Set the reference value by matching the tide level values obtained by another means of Calculate the difference between the measured data and this reference value and obtain the tide level value from the amount of change C A PU peripheral circuit is additionally provided.       [0005]     [Action]   The operation of the present invention will be described with reference to FIG. Trigger generated by CPU peripheral circuit 1 The signal is generated by the oscillation amplifier circuit 2 as a high frequency whose oscillation frequency and time width are determined. , Its output was sent to the amplifier circuit 3, and the lower end was inserted into the sea by the transducer 6. It is fired into the pipe 15 of the sensor unit 14. Echo from the sea surface inside the pipe 15 Returns to the transmitter / receiver 6 again, is amplified through the signal receiving circuit 5 and the signal amplifying circuit 4, It is stored in the reception memory circuit 7.       [0006]   In the CPU peripheral circuit 1 described above, the contents of the reception memory circuit 7 are fetched and the transceiver Calculate the distance from 6 to the sea level. At this time, the temperature input circuit 8 controls the temperature inside the pipe 15. The temperature is taken in by the temperature sensor 19, and its output is input to the CPU peripheral circuit 1. By doing so, the speed of sound is corrected for the distance to the sea surface and the accurate distance is calculated. It The CPU peripheral circuit 1 repeats this distance measurement process at least 10 times or more. Then, the abnormal data is excluded from them, and the arithmetic mean is calculated to obtain one distance measurement value.       [0007]   On the other hand, by another means such as surveying or tide table, you can get to the site at any arbitrary time. The measured tide level value is obtained and the difference between this tide level value and the above-mentioned distance measurement value is calculated by the CPU cycle. The circuit 1 is forced to match the tide level value, and that value is set as the reference value. Calculate. Subsequent tide level calculations are based on this reference value And the CPU peripheral circuit 1 calculates the difference between the value of and the value to obtain the tide level value.       [0008]     [Example]   An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the basic circuit of the present invention. 2 is an electric circuit diagram, and 2 is an oscillation amplifier circuit, which is a trigger generated in the CPU peripheral circuit 1. -The signal produces a high frequency that determines the oscillation frequency and time width for ultrasonic emission. And its output goes through the power amplifier circuit 3 and is transmitted / received at the upper end of the pipe 15. The wave 6 is emitted as ultrasonic waves into the air inside the pipe 15. This ultrasonic wave is a pipe The echo that has reached the sea surface within 15 and is reflected enters the transmitter / receiver 6 again, and the signal receiving circuit 5 is sent to the signal amplification circuit 5, amplified by the signal amplification circuit 4, and converted to the air in the next reception memory circuit 7. It is sampled at a total of 1 cm. The signal content of this reception memory circuit 7 is the CPU frequency. It is taken into the side circuit 1 and the distance to the sea surface is calculated here with an accuracy of 1 cm. Further At this time, the CPU peripheral circuit 1 is in the pipe 15 detected by the temperature sensor 19. The temperature of the (ultrasonic wave propagation path) is taken in from the temperature input circuit 8 and calculated to the sea level. An accurate distance is calculated by correcting the sound velocity with respect to the distance.       [0009]   This distance measurement process is repeated at least 10 times, for example 50 times, Exclude data that is apparently abnormal from the inside and arithmetically average the remaining data The measurement data shall be one time. This process is performed in the CPU peripheral circuit 1. This By taking such a method, wind waves, swells, etc. The effect of seasonal sea level changes can be excluded from the data. At this stage, the tide level It is the distance data from the transmitter / receiver 6 to the surface of the sea, not the transmitter.       [0010]   Here, at any given time, at that site at that time, surveying, box measure, tide The tide level value obtained by various means using a table or the like is C by the calibration value input switch 10. It is input to the PU peripheral circuit 1 and the difference from the above distance data is added by the CPU peripheral circuit 1. Calculate or subtract, force the distance data to match the tide level value, and use that value as the basis. Set it as a quasi-value and use it as a reference for subsequent calculation of tide level values.       [0011]   From the reference value set in the above process and the transducers 6 that are sequentially obtained Calculate the difference from the measured data of the distance to the sea level 18, and obtain the tide level value by the amount of change This eliminates the need for post-calibration, and the pipe 15 and the transducer 6 make it possible to There is an advantage that the installation conditions of the formed sensor unit 14 become very easy.       [0012]   The tide level data obtained in this way, together with the time obtained by the clock circuit 9, It is output to the LCD or the like via the data output unit 11 and is also printed out to the printer. It Therefore, it becomes an automatic recording type, and data can be saved and labor can be saved. Also, The battery 12 or dry cell is used as the power source, but the capacity of the battery 12 By increasing the value, long-time automatic recording is possible.       [0013]   FIG. 2 shows an installation example of the present invention. In the figure, 13 is a housing for the electric circuit. The main body of the tide gauge, 14 is constructed by mounting the handset 6 which works as described above on the pipe 15. It is the sensor part made. Attach the sensor part 14 to the fixing material 16 such as wood or rope. It is fixed to the quay 17 etc., and the pipe 15 is installed vertically to the sea surface 18 The measurement can be performed only by connecting the scale main body 13. In this case, the transceiver 6 Is not submerged in water and the tip of the sensor part 14 is inserted into the sea and is not exposed in the air. It is a condition.       [0014]   As described above, the advantages of the ultrasonic tide gauge according to the present invention are If you input the calibration value calibrated with the tide level value of The actual tide level values can be obtained continuously, and the calibration values to be input can also be surveyed, box scales, and tides. It can be easily obtained by means such as a table. The second advantage is that one tide level value Data is measured at least 10 times from the transducer to the sea surface. Short laps such as wind waves and swells that are not covered by the tide observation because they are calculated using the arithmetic average Accurate tide level or tide level data without being affected by sea level changes during the period Is to get the tar. Furthermore, because the closed space inside the pipe is used as the ultrasonic wave propagation path, The problem of malfunction due to obstacles during long-time measurement is also solved. The third advantage is By using the data calculation method described above, the sensor unit and its installation Is that it has become extremely simple. That is, as shown in FIG. It is supported on the quay using a fixture 16 such as wood, and the hype is installed vertically to the sea surface. It means that measurement is possible just by placing it.       [0015]     [Effect of device]   The ultrasonic tide gauge according to the present invention does not require post-calibration, and the tide gauge body and The installation of sensors and sensors is extremely simple, and the effect of labor saving in operation is extremely large. . Furthermore, the determination of the tide level is obtained by processing the measurement data of at least 10 times or more. And has the effect of making the ultrasonic wave propagation path a closed space inside the pipe. . In other words, the effects of short-term sea level changes that are not included in tide level observations such as wind waves and swells It becomes possible to exclude the data, and the accuracy of the data will depend on The same tide level observation data can be obtained, which is extremely practical in terms of performance. It is a good thing.

[Brief description of drawings] FIG. 1 is a block diagram showing a basic circuit of the present invention. FIG. 2 is a diagram showing an installation example of the present invention. [Explanation of symbols] 1 CPU peripheral circuit 2 oscillation amplifier circuit 3 Power amplifier circuit 4 signal amplification circuit 5 Signal receiving circuit 6 Transceiver 7 Receive memory circuit 8 Temperature input circuit 9 clock circuit 10 Calibration value input switch 11 Data output section 12 batteries 13 Tidal gauge body 14 Sensor section 15 pipes 16 Fixing material 17 quay 18 sea level 19 Temperature sensor

Claims (1)

[Claims for utility model registration] [Claim 1] An oscillation amplification circuit 2, a power amplification circuit 3, and a signal reception circuit for ultrasonically measuring the distance from the transducer 6 surface to the sea surface at a certain arbitrary time. 5, a signal amplification circuit 4, a temperature input circuit 8 for sound velocity correction, and the like, in an ultrasonic tide gauge that includes a series of circuits, a reception memory circuit 7 that stores the output of the signal amplification circuit 4 and a reception memory circuit The contents of 7 are taken in, the reference value is set by matching the distance measurement value by the ultrasonic wave with the tide level value obtained by another means such as surveying or tide table, and the measurement data obtained subsequently and this reference value. An ultrasonic tide gauge, further comprising: a CPU peripheral circuit 1 for calculating a difference between the above and a CPU to obtain a tide level value based on the amount of change. [Claim 2] The wave transmitter / receiver 6 according to Claim 1 is installed at the upper end of a pipe 15 which is vertically inserted by inserting the lower end into the sea, and is exposed from the sea surface. Ultrasonic tide gauge. [Claim 3] The CPU peripheral circuit 7 according to claim 1 is characterized by arithmetically processing a data group obtained by measurement repeated at least 10 times or more to set a reference value and calculate a tide level value. The ultrasonic type tide gauge according to claim 1.