JPH02163683A - Echo sounder equipped with thermal printing and recording device - Google Patents

Abstract

PURPOSE:To attain echo sounding recording with high accuracy by providing plural line dot printing elements and a recording sheet. CONSTITUTION:A printed circuit board, for which plural line dot printing elements are arranged in one string with prescribed intervals (0.1mm, for example), and a recording sheet 3 are provided. Moreover, a mechanism is provided to move the recording sheet 3 in a perpendicular direction to the string of the elements 2. Further, a mechanism is provided to impress and operate an ultrasonic reflected signal to the correspondent element 2 for each depth. The ultrasonic reflected signal for each depth is successively recorded to a processing mechanism 7 including a memory and contents after depth error corrections are successively added through a shift register 8, latch 9 and buffer 10 to the respective correspondent elements 2. In such a case, if the number of the elements 2 is 100 and the number of addresses in a memory 7 is 100, the depth information of 1-100m can be recorded to the recording sheet 3 with the intervals of 1m.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an acoustic sounder having a thermal print recording device.

[Conventional technology]

The recording device of a conventional echo sounder has a rotating plate attached to a synchronous motor, and a high voltage corresponding to the ultrasonic reflected signal is applied through a pen attached to the rotating plate to cause electrical discharge destruction on the recording paper and record the depth. I try to record information.

In addition, instead of the rotating pen mechanism, a large number of pens are arranged side by side, and a high voltage corresponding to the ultrasonic reflected signal is applied to each pen to cause discharge destruction on the recording paper, thereby recording depth information. has also been proposed.

[Problem to be solved by the invention]

However, in the former discharge destruction type recording device with a rotary pen mechanism using a synchronous motor, it is troublesome to adjust and replace the stylus pressure of the recording pen, and furthermore, it is difficult to adjust and replace the stylus pressure of the recording pen, and furthermore, due to the influence of inertia during rotation during rolling and binching at sea. This has the drawback that synchronization occurs on the recording paper, resulting in extremely unstable and inaccurate recording in precision measurements.

The latter recording device does not have a rotating pen mechanism, so there is less mechanical noise, but since it uses discharge breakdown recording paper, it requires a high voltage section, and furthermore, due to insulation problems, the distance between the pens cannot be made very small. , high-resolution measurement is extremely difficult in practice.

In addition, it is not possible to achieve symbiosis between the two and low power consumption, and there are health problems due to the gas generated during discharge.

Means for Solving the Problem C] In the present invention, the above-mentioned drawbacks are eliminated by using a thermal print recording device as a recording device of an acoustic sounder.

Thermal printing of the present invention! An acoustic sounder that has three devices is an acoustic sounder that receives, amplifies and records the reflected signals of ultrasonic waves emitted to an object to be measured, and includes a plurality of line dot printing elements, a recording paper, and a A thermal print recording device comprising a mechanism for relatively moving the paper and the line dot printing element, and a mechanism for applying information of the ultrasonic reflection signal to corresponding ones of the line dot printing elements for each depth and activating them. It is characterized by having the following.

[For production]

The device of the present invention uses a thermal printing recording method, and since it does not have a recording pen, there is no need to adjust the pen pressure.Also, since it does not have a rotation mechanism such as a synchronous motor, There is no synchronization shift due to the effects of inertia, etc., and recording instability and inaccuracy are eliminated, and there is no gas generated during discharge, making it possible to record sounding information with high accuracy with a small size and low power consumption.

〔Example〕

The present invention will be explained in detail below with reference to the drawings.

In the present invention, as shown in FIG. 1, a plurality of, for example, 100 thermal printing elements 2, which are heated by passing an electric current through a long and narrow printing substrate 1 of a thermal head to form black dots on a recording paper 3, are installed at a predetermined location, for example. The recording paper 3 is arranged in a line with a distance of 0.1 mm from each other, and the recording paper 3 is moved by a winding motor 4 in a direction perpendicular to the row of thermal printing elements 2.

FIG. 2 is an explanatory diagram for applying a signal from a depth sounder to the thermal printing element 2, in which 5 is an ultrasonic transducer, 6
indicates the seabed, and in the present invention, the information on the reflection of the ultrasonic waves emitted towards the seabed 6 at each depth is A/D converted as necessary and sequentially recorded in the processing mechanism 7 including a memory having addresses 1 to 100, for example. After correcting the depth error caused by the movement of the ship, turbidity in the sea, etc., the processed contents are sequentially applied to each of the corresponding thermal printing elements 2 via the shift register 8, latch 9, and buffer 10. .

That is, the contents of address 1 in the memory are added to the first thermal printing element 2, the contents of address 2 are added to the adjacent second thermal printing element 2, and in the same way, the contents of address 2 are added to the 100th thermal printing element 2. adds the contents of address 100.

In this state, for example, if the depth of the ocean floor is 100 m, information on the depth of 1 to 2 m is stored in address 1 of the memory, and this is added to the first thermal printing element 2, and in the same way, the 100th 99 to 100 for thermal printing element 2
m information will be added.

Therefore, if all the processed contents of addresses 1 to 100 of the memory are sequentially read out and added to the thermal printing element 2 sequentially, then the thermal printing element 2 can be used to
Information at a depth of 0 m can be recorded on the recording paper 3 at intervals of 1 m.

The level of information reflected from ultrasonic waves from the ocean floor varies depending on the unevenness of the ocean floor and soil quality, resulting in shading in the record.

The shading of this record is useful for determining the ocean floor conditions, but on the other hand, it can sometimes be difficult to decipher the depth. In such a case, the signal read from the memory is compared with a predetermined dark value by a comparator, and based on the comparison output, a certain voltage source is turned on or off, and a voltage of a certain magnitude is applied to the thermal printing element 2. By doing this, it is possible to erase the shading of the recording and clearly record only the value corresponding to the depth.

In the present invention, it is of course possible to omit the processing mechanism 7 depending on the case.

3... Recording paper, 4... Motor, 5... Ultrasonic transducer, 6... Seabed, 7... Processing mechanism, 8... Shift register, 9... Latch, 10 ···buffer.

〔Effect of the invention〕

Since the present invention has the above-described configuration, it is possible to easily obtain a recording device for a depth sounder that is small in size, has low power consumption, and has high accuracy.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a printed circuit board according to the present invention, and FIG. 2 is an explanatory diagram of information reading.

Claims (2)

[Claims] (1) An acoustic sounder that receives, amplifies, and records reflected signals of ultrasonic waves emitted to an object to be measured, and includes a plurality of line dot printing elements, a recording paper, and the recording paper and the line dots. A thermal printing recording device comprising a mechanism for relatively moving printing elements, and a mechanism for applying information of the ultrasonic reflection signal to corresponding ones of the line dot printing elements for each depth and activating them. An acoustic sounder having a thermal printing recording device characterized by: (2) An acoustic sounder that receives, amplifies, and records reflected signals of ultrasonic waves emitted toward an object to be measured, and includes a plurality of line dot printing elements, a recording paper, and the recording paper and the line dots. A processing mechanism including a mechanism for relatively moving the printing element, a memory having sequential addresses for storing information of the ultrasonic reflection signal for each depth, and a processing mechanism that stores information of the sequential addresses processed by this processing mechanism. 1. An acoustic sounder having a thermal print recording device, characterized in that the thermal print recording device comprises a mechanism for applying voltage to corresponding line dot printing elements and activating them.