JP2019124674A - Clinometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To have many inclinometers generally used at present. However, since it is greatly affected by changes in the environmental temperature with the elapsed measurement time, there is no particular problem in short-term measurement with little temperature change, but in long-term measurement, a large temperature difference occurs and the data value contains a large error. There was a practical problem that made it unreliable. SOLUTION: A tilt sensor main body that detects and outputs an tilt angle, a heating element, a thermometer, and a temperature control device are provided in a casing, and the temperature control device has a temperature setting function and the output temperature of the thermometer. The operation of the heating element is controlled so that the value maintains the temperature set value. [Selection diagram] Fig. 1

Description

  The present invention is intended to confirm the deformation and functionality of the existing structure due to various environmental influences by the inclination angle and the displacement. For example, the diagnosis of an aged road bridge, the influence diagnosis on the existing structure in proximity work, etc. Etc., and to propose an inclinometer which is used to grasp these behaviors and to maintain the existing safety of the existing structure and the safety of the construction pertaining to the existing structure.

  There are conventional inclinometers of this type which are configured by a strain output type, a servo type, a capacitance type or the like. However, in any type, the output value is affected by the change of the environmental temperature, and particularly the one having a capacity of 5 ° or less has a problem that a large error is included because the resolution is small. Furthermore, in the long-term measurement, since the environmental temperature change becomes large, there was a practical defect that this tendency appears more remarkably.

  The detection structure of the inclinometer, regardless of its type, is structural, and the performance of the material leads to an error in the output value due to the change in ambient temperature, which impairs the accuracy of the inclinometer, resulting in accurate data There is no practical problem. In particular, in the case of long-term measurement, environmental temperature changes are also remarkable because they are severe. On the premise that this problem can not be avoided conventionally, temperature correction is performed to remove the influence of temperature change. However, changes in data due to temperature are not uniform, and correction is extremely difficult.

  An inclination sensor main body that detects and outputs an inclination angle in a casing, a heating element, a thermometer, and a temperature control device are provided, and the temperature control device has a temperature setting function, and an output temperature value of the thermometer is temperature setting The operating control of the heating element was performed to maintain the value.

  Since the heating element is provided in the casing and the heating element is controlled by the temperature control device reflecting thermometer data, and the surrounding space temperature of the inclination sensor main body is kept constant at an arbitrary value, the output of the inclination sensor main body is It does not include an error without being affected by temperature change, it does not require the operation such as the temperature correction process which was conventionally done conventionally, and it is correct data especially in response to the change of environmental temperature over a long period. There is an excellent practical effect of being able to take out.

Functional block diagram of the inclinometer showing an embodiment of the present invention Structural explanatory view (plan view) of an inclinometer showing an embodiment of the present invention Structure explanatory drawing (front view) of the inclinometer which shows embodiment of this invention Operation explanatory drawing of the inclinometer which shows embodiment of this invention

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  In the figure, a is an inclinometer according to the present invention. Reference numeral 1 denotes, for example, a dome-shaped casing made of resin, and a base plate 2 is fixed to the bottom surface by bolts 3. A power source 4 such as a battery supplies power to the upper surface (the space in the casing 1) of the base plate 2 and detects a tilt angle in the X and Y directions (shown in FIG. 2). A data communication oscillator 6 is provided, for example, via an Internet line, so that the data can be taken into a personal computer at a predetermined location. Furthermore, a temperature control device 7 supplied with power from the power supply 4 to the upper surface (inside the casing 1 space) of the base plate 2, a thermometer 8 connected to the temperature control device 7, and a heating element 9 connected to the temperature control device 7 Is provided. The thermometer 8 measures the temperature of the space in the casing 1 and sequentially sends temperature data to the temperature control device 7. The temperature control device 7 obtains the temperature data of the thermometer 8 to control the operation of the heating element 9, and maintains the temperature set value, that is, maintains the temperature inside the casing 1 at the set value.

  Reference numeral 10 denotes a mounting plate, and in this embodiment, an inclinometer a composed of a casing 1, a base plate 2, a power supply 4, an inclination sensor main body 5, a data communication transmitter 6, a temperature control device 7, a thermometer 8 and a heating element 9 It is used in advance when installing in etc. 11 is a bolt for fixing the inclinometer a of the present invention to the mounting plate 10, and 12 is a bolt for fixing the mounting plate 10 to a measurement object. Reference numeral 13 denotes a cpu substrate for setting the function of the tilt sensor main body 5.

  The operation of the inclinometer according to the invention will now be described. For example, when installing the inclinometer a on the upper surface of the bridge 14, the mounting plate 10 is fixed with a bolt 12 at a predetermined place on the upper surface of the bridge 14. Here, it is assumed that the directions of the X direction and Y direction components shown in FIG. 2 are along the predetermined direction. Next, the inclinometer a is placed on the mounting plate 10 and fixed by the bolt 11.

Then, as shown in FIG. 4, when the upper surface of the bridge 14 inclines, for example, 5 ° in the X-direction, the inclinometer a follows, and the inclination sensor body 5 senses this and outputs X-data as -5 °. (The same applies to the Y-direction, and the XY-direction also outputs simultaneously). The output data associated with this inclination is taken by the data communication oscillator 6 into a personal computer at a predetermined location via, for example, the Internet.

In the inclination measurement carried out in this way, a major problem does not occur in the measurement for a short time, but in the long-term measurement, the environmental temperature changes significantly including the seasonal fluctuation. The output value is exposed with a large error.

Here, in the present invention, the power supply 4 is turned on to the temperature control device 7 at the start of measurement, and the thermometer 8 and the heating element 9 are operated. The temperature control device 7 controls the operation of the heating element 9 in advance, for example, at a temperature setting of 50 ° C., using temperature data obtained by measuring the temperature in the casing 1 by the thermometer 8 as a pointer. As a temperature control method, any one of ON / OFF operation of ON at 49 ° C. and OFF at 51 ° C. or P operation (proportional operation) or I operation (integral operation) may be employed.

In addition, about the preset temperature given to the temperature control device 7, the level which exceeds the prediction maximum temperature at the time of measurement is good. In the present invention, the function of cooling the temperature in the casing 1 is not provided. Although this is technically possible, this form was adopted in consideration of cost.

As a result, the inclination sensor main body 5 always operates in the environment of the casing 1 at 50 ° C. during measurement, is not affected by the external environmental temperature, and outputs stable and accurate data even in long-term measurement It becomes.

a ... tilt meter 1 ... casing 2 ... base plate 3 ... bolt 4 ... power supply 5 ... tilt sensor main body 6 ... data communication transmitter 7 ... temperature control device 8 ... Thermometer 9 ... Heating element 10 ... Mounting plate 11 ... Bolt 12 ... Bolt 13 ... cpu board 14 ... Bridge

Claims (1)

  An inclination sensor main body that detects and outputs an inclination angle in a casing, a heating element, a thermometer, and a temperature control device are provided, and the temperature control device has a temperature setting function, and an output temperature value of the thermometer is temperature setting An inclinometer characterized in that the activation control of the heating element is performed to maintain the value.

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