JPH0742137A - Gate gradient detection type opening meter - Google Patents

Abstract

PURPOSE:To improve function by detecting the tilt angle of a gate arm with a measuring means provided on the gate arm, and calculating and displaying the vertical opening of a gate based on the measured value and the optional set value of the gate size. CONSTITUTION:The tilt angle of a gate arm 2 is measured by a detection section 3 constituted of a clinometer such as an accelerometer 31. This tilt angle is an included angle between the horizontal line direction passing through the trunnion axis 5 and the extension line direction of the upper section of the arm 2. The gate arm length and gate shaft height of the gate 1 to be measured are set and inputted to an arithmetic device 4, the tilt angle is initially measured after the gate 1 is fully closed, then automatic measurement is started. The tilt angle of the arm 2 is received by the arithmetic device 4, and the vertical opening of the gate 1 is calculated and displayed based on the set value and the measured data and BCD-outputted to a drive system. The response and accuracy can be improved, the arithmetic device 4 is selectably connected to one detection section, and it can be universally used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening meter for measuring a gate movement amount of a radial gate and calculating, displaying and outputting a vertical opening of the gate, and more particularly, to a gate inclination (gate arm inclination angle). Directly measure it, detect it as a digital value, and calculate the vertical opening of the gate by arithmetic processing,
The present invention relates to a gate gradient detection type opening meter which is configured to display and output.

[0002]

2. Description of the Related Art Generally, in a radial gate, it is difficult to obtain the vertical opening because the orbit of opening and closing the gate draws a circular arc. For the radial gate opening meter device, what is the measured amount indicating the gate moving amount so far? There have been several types of proposals in which the detection method differs depending on the measurement target.

The existing devices are summarized as follows. The object to be measured is a trunnion shaft direct connection type with the rotation angle of the gate shaft [FIG. 4], and the arc movement amount (rotation angle) of the gate through the wire. A messenger wire type spring reel type [Fig. 5], a counter weight type [Fig. 6], a mechanical type actual opening conversion type [Fig. 7] and the like are known.

In any of the above-mentioned existing devices, the gate movement amount is measured in analog and the vertical opening is calculated by A / D conversion and arithmetic processing.

[0005]

However, in the above-mentioned existing equipment, there are merits and demerits in terms of workability, economical efficiency, accuracy, maintainability, versatility, etc. The setting and conversion for correcting to the true value were troublesome. Since this correction (value) conversion is performed by the arithmetic device for each gate, it is fixedly installed and used, and the versatility of the device itself is poor.

Further, in the case of the messenger wire type position gauge, which is often used, there are many failures in the wire winding portion, which may cause operational problems. Also, there was a disadvantage in terms of economy.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to solve the above-mentioned problems and to provide a gate gradient detection type opening meter which can electrically measure a gate gradient and perform instant digital calculation. The purpose is.

[0008]

In order to achieve the above object, the present invention directly measures the gate slope and immediately processes the data to numerically display the vertical opening of the radial gate and output the BCD to the drive system. A gate gradient detection type opening meter, comprising: a measuring means for detecting a gate arm inclination angle; a calculating means for obtaining a vertical opening of the gate based on the measurement data; and a display / output means. To do.

Further, the arithmetic means is connected to the measuring means through a signal line and is configured to be switchably connectable so as to change the gate to be measured and input an arbitrary setting item regarding the gate size. Is.

Here, the measuring means is composed of an accelerometer, and detects the gate arm inclination angle as the angle between the horizontal direction from the trunnion axis position and the extension line direction of the upper part of the gate arm on which the accelerometer is installed. It may be said that.

[0011]

The gate arm tilt angle is detected by the measuring means provided on the gate arm, and the detection signal is sent to the calculating means as measurement data. The calculating means calculates the vertical opening of the gate based on this measurement data and an arbitrary set value of the gate size,
Numerical values are displayed through the display / output means and BCD output is performed to the drive system.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic diagram of a device configuration of a gate gradient detection type opening meter embodying the present invention. Here, 1 is a radial gate (door body), 2 is a gate arm, 3 is a detection unit (measuring means), 4 is a computing device (computing means and display / output means), 5 is a trunnion axis, 31 is an accelerometer, 32 is a protector,
41 is an amplifier, 42 is an amplifier, 43 is a converter, 44 is a lightning protection transformer, 45 is a display, and 46 is a BCD output section. Further, FIG. 2 is a structural schematic diagram of the present invention for comparison with a conventional example.

A detector (3) is provided near the door body (1) of the gate arm (2). The detection unit (3) is composed of an inclinometer which is an electronic device, but preferably, an instrument using the accelerometer (31) as an inclinometer is used and a protector (32) is additionally provided. Here, the measurement angle (gate arm inclination angle) detected by the accelerometer is the angle between the horizontal direction from the trunnion axis (5) position and the extension line direction above the gate arm where the accelerometer is installed (described later). α x).

Here, the actual machine accuracy is ± 0 with respect to the set value.
Within 9 °, that is, the vertical opening is about ± 1 cm, which greatly exceeds the accuracy of the conventional machines of ± 2 cm to ± 6 cm.
The protector (32, 41) has a common specification on the detection unit (3) side and the arithmetic unit (4) side.

The arithmetic unit (4) is also an electronic device, and as functional means, a protector (41), an amplifier (42), a converter (43), a seismic transformer (44), a display (45) and a BCD.
It has an output section (46). The detection unit (3) and the arithmetic unit (4) are connected to each other via a signal line, and usually also have an alarm device.

Then, after inputting the gate dimensions of the gate (1) to be measured, that is, the gate arm length (L described later) and the gate axis height (Hc described later) to the arithmetic unit (4), the tilt angle when the gate is fully closed. (.Alpha.0 to be described later) is initially measured, and automatic measurement is started to detect the tilt angle of the gate arm (2) at any time. The arithmetic unit (4) receives the detection signal as data,
The vertical opening of the gate (1) is calculated on the basis of the set value and the measured data, displayed numerically, and output to the drive system in BCD.

The arithmetic unit (4) has a specification of directly inputting the gate size as an arbitrary setting item, and is configured to be switchably connectable to the measuring means in accordance with the change of the input, and the one detecting unit (3). Since it is a component that can be independent of, it has versatility that it can be used for other gates.

For reference, the relationship between the vertical opening of the gate and the gate slope in the present invention is shown in FIG. 3, and the relational expressions will be introduced below. Hc = L sinδ0, Hc−X = L sinδx∴X = L (sinδ0−sinδx) (1) Further, β1 = δ0−δx, β2 = α0−αx, β1 =
β2 ∴δx = δ0- (α0-αx) (2) Substituting equation (2) into equation (1), X = L {sinδ0-sin (δ0-α0 + αx)} = Hc- L sin (δ0 −α0 + αx)

Therefore, δ0 (the lower angle when the gate is fully closed) is known, the items of arbitrary setting inputs are Hc and L (expressed as the gate dimension in the text), and α0 is initially measured and then αx is changed at any time. This means measuring and calculating X at this time.

[0020]

According to the present invention, which has the above-described structure, when the automatic measurement is started, the digital data is consistently processed from the actual measurement to the display / output, so that the response and the accuracy can be improved. . Moreover, in the device configuration, since the arithmetic unit is switchably connectable to one detection unit, it has versatility that it can be used for any radial gate.

Further, the apparatus is composed of electronic equipment and the entire apparatus is compact, so that inspection and maintenance including parts replacement can be performed easily and quickly, and the construction and maintenance costs including the apparatus itself are highly economical.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a device configuration of a gate gradient detection type opening meter which is an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of the present invention for comparison with a conventional example.

FIG. 3 is an explanatory diagram showing a relationship between a vertical opening degree of a gate and a gate gradient in the present invention.

FIG. 4 is a schematic diagram of a configuration of a trunnion shaft direct-coupling type opening meter which is a conventional example.

FIG. 5 is a schematic view showing the configuration of a messenger wire type opening degree meter spring reel type which is another conventional example.

FIG. 6 is a schematic diagram of a messenger wire type opening meter counterweight type.

FIG. 7 is a schematic diagram showing the configuration of a mechanical type actual opening conversion type opening meter which is another conventional example.

[Explanation of symbols]

 1 Radial Gate (Door) 2 Gate Arm 3 Detector (Measurement Means) 4 Computing Device (Calculation Means and Display / Output Means) 5 Trunnion Axis 31 Accelerometer 32 Protector 41 Protector 42 Amplifier 43 Converter 44 Lightning Protection Transformer 45 Display 46 BCD output section

Claims (3)

[Claims] 1. A vertical opening of the radial gate, which is obtained by directly measuring the gate slope in an opening meter for measuring the gate movement amount of the radial gate and calculating, displaying and outputting the vertical opening of the gate. A gate gradient detection type opening meter which displays the degree numerically and outputs BCD to the drive system, and a measuring means for detecting a gate arm inclination angle, and a calculation for obtaining a vertical opening degree of the gate based on the measurement data. A gate gradient detection type opening meter, which is provided with a means and a display / output means. 2. The arithmetic means is connected to the measuring means via a signal line and is configured to be switchably connectable so that the gate to be measured is changed and an arbitrary setting item regarding the gate size is input. A gate gradient detection type opening meter according to item 1. 3. The measuring means is composed of an accelerometer, and detects the gate arm inclination angle as the angle between the horizontal direction from the trunnion axis position and the extension line direction of the upper part of the gate arm on which the accelerometer is installed. The gate gradient detection type opening degree meter according to claim 1 or 2.