JPH05264359A - Radiation temperature measuring instrument - Google Patents

Abstract

PURPOSE:To measure the temperature of an object to be measured in one- dimensional direction with a simple constitution. CONSTITUTION:The radiation energy of an object to be measured in one- dimensional direction is measured by arranging detectors 2 in a straight line and a rotary sector 3 is provided in front of the detectors 2. The incidence of the radiation energy to the detectors is scanned and corresponding detecting signals are outputted to a signal processing circuit 10 as the slit 3a of the sector 3 rotates. The circuit calculates and outputs the temperature corresponding to the radiation energy. As a result, the temperature of the radiation energy in the one-dimensional direction can be measured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiation temperature measuring device for measuring temperature based on radiation energy emitted from an object.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional radiation temperature measuring device. This radiation temperature measuring device measures a one-dimensional (width direction) temperature pattern. The radiant energy of the object to be measured is scanned via the rotating mirror 41 and input to the detection element 40. The detection signal of the detection element 40 is input to the calculation means 45 via the amplifier 43 and the A / D converter 44.

The position of the rotating mirror 41 is determined by the synchronizing signal generator 46.
Is detected by and is input to the calculation means 45. Therefore, the calculation means 45 can output the temperature pattern in the one-dimensional direction by continuous scanning.

In addition, there is an image sensor for detecting the one-dimensional temperature of the object to be measured. Of these, a CCD is widely used, and pixels of photoelectrically converted charges in a semiconductor arranged in series are transferred in one direction to extract a detection signal. Radiant energy of the object to be measured is input to the CCD through an optical system such as a lens, and the temperature pattern in the one-dimensional direction can be known by continuous scanning.

[0005]

However, in the radiation temperature measuring device shown in FIG. 4, since the rotating mirror 41 is driven to rotate, the mechanism becomes complicated and expensive, and the rotating mirror 41 portion occupies a space and is small and lightweight. I couldn't make it.

Further, in the CCD, the internal circuit and wiring are complicated, and a lot of man-hours are required for manufacturing and producing.
Moreover, the design could not be easily changed after the creation.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a radiation temperature measuring device capable of obtaining a temperature in a one-dimensional direction with a simple structure.

[0008]

In order to achieve the above object, the radiation temperature measuring apparatus of the present invention is a radiation temperature measuring apparatus for measuring the temperature of a measured object in a one-dimensional direction based on the radiant energy of the measured object. In claim 1, in order to detect the one-dimensional radiant energy of the object to be measured, a linearly arranged detector 2 and a rotatable slit 3a provided in front of the detector 2 are provided. And rotating sector 3 for scanning the incident portion of the radiant energy on detector 2
And a signal processing circuit 10 for calculating the temperature of the object to be measured based on the detection signal output from the detector 2.

According to a second aspect of the invention, in order to detect the radiant energy in the one-dimensional direction of the object to be measured, a plurality of light receiving elements 5a to 5n linearly arranged and the plurality of light receiving elements 5a to 5n are arranged. Light receiving element 5 by switching each electrode
Selectors 30, 31, 32 for selectively scanning a to 5n
And a signal processing circuit 10 for calculating the temperature of the object to be measured based on the detection signals output from the light receiving elements 5a to 5n.

[0010]

The radiant energy of the object to be measured is detected by the light receiver 2 provided linearly, and this detection signal is obtained as a continuous scanning output by the rotation of the slit 3a of the rotating sector 3. Then, the signal processing circuit 10 calculates the temperature from the radiant energy of the object to be measured, and the temperature in the one-dimensional direction corresponding to the direction of the light receiver 2 can be measured.

[0011]

1 is a rear view showing a radiation temperature measuring apparatus of the present invention. The light receiving unit 1 includes a light receiving unit 2 and a rotating sector 3. The light receiver 2 includes a plurality of light receiving elements 5a to 5a.
n are arranged linearly at predetermined intervals. Each light receiving element 5
A light shielding plate 6 is provided between them to prevent adjacent light receiving elements 5 from interfering with each other.

The light receiving element 5 includes a thermoelectric detector made of Ge or the like, Pbs, PbSe, InAs,
A photoelectric detector formed of HgCdTe or the like is used,
The temperature range to be measured is determined by the characteristics of each element. Between both electrodes of these light receiving elements 5, a common electrode 8a,
8b is provided, and the detection signals obtained from the common electrodes 8a and 8b are supplied to the signal processing circuit 1 via the leads 9a and 9b.
Input to 0.

A rotating sector 3 is provided on the side of the light receiving surface of the light receiver 2 and in front of the incident surface of the radiant energy of the object to be measured. The rotating sector 3 is formed in a disk shape, and is rotationally driven by the motor 15. A slit 3a having a width and a length of the one light receiving element 5a is formed at one location on the outer peripheral edge of the rotating sector 3. The rotation of this rotation sector 3 is
The signal processing circuit 10 detected by the synchronization signal generator 16
Entered in.

The signal processing circuit 10 outputs a temperature of an object to be measured by performing a pre-stage amplifier 18 for amplifying a detection signal of the light receiver 2, a synchronization controller 19 for specifying the position of the slit 3a, an emissivity calculation and the like. It has a computing means 14.

Next, the operation of the radiation temperature measuring device having the above structure will be described. As the rotating sector 3 rotates,
The slit 3a sequentially passes through the light receiving elements 5a to 5n. Here, when the slit 3a is located at the portion of the light receiving element 5a, the light receiving element 5a detects the radiant energy emitted by the object to be measured and outputs it to the signal processing circuit 10 as a detection signal.

Therefore, as the rotating sector 3 rotates,
In the detector 2, the adjacent light receiving elements 5b to 5n intermittently receive the radiant energy and output corresponding detection signals. The rotation of the rotation sector 3 is performed by the synchronization signal generator 16 and the synchronization control unit 19 in each of the light receiving elements 15a to 15n.
It is synchronized with the detection signal output of. Since the light receiver 2 has a configuration in which the light receiving elements 5a to 5n are linearly arranged, the present apparatus continuously outputs temperature information in the one-dimensional direction which is the arrangement direction of the light receiving elements 5a to 5n. Obtainable.

Next, FIG. 2 is a front view showing a modified example of the detector 2. The detector 20 is composed of a single, vertically elongated detection element 21. The electrodes 22a and 22b at both ends are output to the signal processing circuit 10. The detector 20 and the rotating sector 3 can be combined to form a light receiving unit. Here, since the number of the detection elements 21 is single, if the light receiving portion moves along with the movement of the slit 3a, detection signals of continuous change values will be output.

Next, FIG. 3 is a view showing a modification of the light receiving section 1. The light receiving unit 40 divides each of the light receiving elements 5a to 5n of the detector 2 into a plurality of groups (in the example of the figure, there are four elements in one group, each element is described by a resistor symbol), and one of the groups is used in each group. The electrodes are commonly connected and connected to the first selector 30. The other electrode is 1 for each group
Each of them is commonly connected and connected to the second selector 31.

The first selector 30 and the second selector 31 are
It is controlled by the scan controller 32, and outputs one of the inputs by switching. This output is output to the signal processing circuit 10 as the detection signal. This light receiving part 4
With the configuration of 0, it is possible to continuously obtain temperature information in the one-dimensional direction that is the arrangement direction of the light receiving elements 5a to 5n without using the rotating sector 3. In the light receiving section 40, the wiring of the path portion from the light receiving elements 5a to 5n to the signal processing circuit 10 can be simplified and can be easily manufactured.

[0020]

According to the first aspect of the present invention, by arranging the light receivers linearly, the radiant energy corresponding to the direction can be detected, and the output of the light receivers in the direction can be detected by the rotating sector. Since the scanning output is employed, the temperature in the one-dimensional direction can be easily obtained with a simple configuration.

According to the second aspect of the invention, since the plurality of light receiving elements are arranged linearly and sequentially switched by the selector, the signal line of the light receiving element can be formed by a simple wiring, and the signal line of the one-dimensional direction can be formed. You can get the temperature.

[Brief description of drawings]

FIG. 1 is a rear view showing a radiation temperature measuring device of the present invention.

FIG. 2 is a front view showing a modified example of the detector.

FIG. 3 is a diagram showing a modified example of a light receiving unit.

FIG. 4 is a diagram showing a conventional radiation temperature measuring device.

[Explanation of symbols]

1 ... Light receiving part, 2, 20 ... Detector, 3 ... Rotating sector, 3a
... slits, 5 (5a to 5n), 21 ... light receiving element, 10
... signal processing circuit, 14 ... arithmetic means, 30 ... first selector, 31 ... second selector, 32 ... scan control section.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yozo Nemoto 32-8, Kumano-cho, Itabashi-ku, Tokyo Chino Corporation

Claims (2)

[Claims] 1. A radiant temperature measuring device for measuring a temperature in a one-dimensional direction of an object to be measured based on radiant energy of the object to be measured. And a rotatable slit (3) provided in front of the detector (2).
A rotating sector (3) having a) for scanning an incident portion of radiant energy to the detector, and a signal processing circuit (10) for calculating the temperature of the object to be measured based on a detection signal output from the detector. And a radiation temperature measuring device. 2. A radiation temperature measuring device for measuring the temperature of a measured object in the one-dimensional direction based on the radiant energy of the measured object. A plurality of light receiving elements (5a-5
n) and a selector (30, 31, 32) for selectively scanning the light receiving element by switching each electrode of the plurality of light receiving elements
And a signal processing circuit (10) for calculating the temperature of the object to be measured based on a detection signal output from the light receiving element.