JPS6335930U - - Google Patents

Description

[Brief explanation of drawings]

Figure 1 is a sectional view showing the measurement principle of this invention, Figure 2 is a sectional view showing another measurement principle of this invention, Figure 3 is a configuration diagram of the measuring device of this invention, and Figure 4 is a sectional view of this invention. 5 is a schematic diagram incorporating the aperture device of this invention, FIG. 6 is a schematic diagram incorporating the focus adjustment device of this invention, and FIG. 7 is a schematic diagram incorporating a plurality of sensors of this invention. 1 is a schematic diagram of a measuring device using In the figure, 1-1 and 1-2 are optical fibers, 2-1 and 2-2 are ferrules, 3 is a compression spring A, 4 is a compression spring B, 5 is a sensor cover, 6 is a heat wire, 7 is a black body, 9 is a light emitting source, 10 is a light receiver, 1
1 is a reflection plate, 12 is a measurement object, 13 is a sensor case, 14 is a condenser lens, 15 is a diaphragm device, and 16 is a focus adjustment device. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims for Utility Model Registration] (1) An optical temperature measuring device comprising: a light projecting means; a first optical fiber that receives the light projected by the light projecting means; and the first optical fiber. a second optical fiber connected to the sensor section; and an irradiation means that collects heat rays emitted according to the surface temperature of the object to be measured and irradiates the sensor section. The sensor unit changes the amount of light received by the first optical fiber incident on the second optical fiber when the amount of the projected heat ray exceeds a predetermined amount, and further comprises: An optical type comprising a light receiving means for receiving the light incident on the second optical fiber, and detecting the surface temperature of the object to be measured by comparing the amount of light received by the light receiving means with a predetermined amount of light. Temperature measuring device. (2) The sensor section includes: a first ferrule having a flange into which the first optical fiber is inserted and fixed; and a second ferrule having a flange into which the second optical fiber is inserted and fixed. a sensor cover that integrally covers the first ferrule and the second ferrule and is movable in the axial direction; and a sensor cover that is installed in the sensor cover and covers the first ferrule and the second ferrule a first spring that constantly presses the ferrules in the direction of joining; A pressing force that separates the first ferrule and the second ferrule against the pressing force of the first spring when the heating ray is irradiated and the amount of the heating ray exceeds a predetermined amount. 2. The optical temperature measuring device according to claim 1, comprising: a second spring made of a shape memory alloy, which produces a second spring made of a shape memory alloy; (3) The sensor section includes: a first ferrule into which the first optical fiber is inserted and fixed; a second ferrule into which the second optical fiber is inserted and fixed; and a second ferrule into which the second optical fiber is inserted and fixed; a third ferrule whose axial cross section is in contact with the ferrule and the second ferrule, which is movably installed in the direction perpendicular to the axis, and into which a third optical fiber is inserted and fixed; a sensor cover that covers the first ferrule, the second ferrule, and the third ferrule; a black body that is installed on the sensor cover and is irradiated with the heat rays; and a black body on the opposite side to the side where the black body is installed. a first spring that is installed between the inner surface of the sensor cover and the third ferrule and constantly presses the third ferrule in the direction in which the black body is installed; a blocking means for preventing movement of the black body; and a blocking means installed between the inner surface of the sensor cover on the side where the black body is installed and the third ferrule, when the temperature transmitted from the black body exceeds a predetermined value. ,
and a second spring formed of a shape memory alloy that generates a pressing force that moves the third ferrule in an axis-perpendicular direction against the pressing force of the first spring. Optical temperature measuring device according to scope 1. (4) The optical temperature measuring device according to claim 1, wherein the irradiation means includes a concave mirror. (5) The optical temperature measuring device according to claim 1, wherein the irradiation means includes a convex lens. (6) The optical temperature measuring device according to claim 1, wherein the irradiation means has a diaphragm device. (7) The irradiation means has a focus adjustment device,
An optical temperature measuring device according to claim 1 of the utility model registration claim.