JPS62158374U

JPS62158374U -

Info

Publication number: JPS62158374U
Application number: JP4602886U
Authority: JP
Priority date: 1986-03-31
Filing date: 1986-03-31
Publication date: 1987-10-07

Description

[Brief explanation of drawings]

第１図ａ，ｂは本考案一実施例の大物物品搬出
モニタを示し、第１図ａは全体を示す概略図、第
１図ｂは第１図ａの物品高さセンサの構成を示す
概略図、第２図は本考案変形例の大物物品搬出モ
ニタを示す概略図、第３図は物品高さとモニタ感
度の関係を示すグラフ、第４図は大物物品搬出モ
ニタの従来例を示す概略図である。１０１……コンベア、１０２……被検物品、１
０３……測定部、１０４……上面用放射線検出器
、１０５……下面用放射線検出器、１０６……放
射線モニタ、１０７……データ処理装置、１０８
……物品高さセンサ、１０９……検出器高さセン
サ、１１０……制御装置、１１１……昇降装置、
２０４……上面用放射線検出器、２０７……デー
タ処理装置。 1a and 1b show a large article discharge monitor according to an embodiment of the present invention, FIG. 1a is a schematic diagram showing the whole, and FIG. 1b is a schematic diagram showing the structure of the article height sensor of FIG. 1a. 2 is a schematic diagram showing a large article discharge monitor according to a modified example of the present invention, FIG. 3 is a graph showing the relationship between article height and monitor sensitivity, and FIG. 4 is a schematic diagram showing a conventional example of a large article discharge monitor. It is. 101...Conveyor, 102...Test article, 1
03...Measurement unit, 104...Radiation detector for the top surface, 105...Radiation detector for the bottom surface, 106...Radiation monitor, 107...Data processing device, 108
... Article height sensor, 109 ... Detector height sensor, 110 ... Control device, 111 ... Lifting device,
204...Top radiation detector, 207...Data processing device.

Claims

[Scope of Claim for Utility Model Registration] (1) In a large object carry-out monitor that checks for contamination when large objects are carried out from a radiation controlled area to outside the area, a conveyor on which the object to be inspected is placed and passed through the measuring section. , an article height sensor that detects the height of the article to be inspected on the conveyor before measurement; and an article height sensor that receives a signal from the height sensor and responds to the distance between the upper surface radiation detector in the measurement section and the article to be inspected. 1. A monitor for carrying out large articles, characterized in that it is equipped with a measurement error correction means for eliminating errors in contamination measurement values due to differences in monitor sensitivity that vary depending on the monitor sensitivity. (2) The measurement error correction means receives signals from a detector height sensor that detects the height of the radiation detector for the top surface from the conveyor surface, this height sensor and the article height sensor, and detects the height of the radiation detector for the top surface from the top surface of the object to be detected. A practical application characterized by comprising: a control device that outputs a control signal so that the distance from the radiation detector for the top surface is always constant; and a lifting device that moves the radiation detector for the top surface vertically in accordance with the control signal. Scope of patent registration request No. 1
Monitor for carrying out large items as described in section. (3) The measurement error correction means is a data processing device that receives a signal from an article height sensor, switches the monitor sensitivity to a sensitivity corresponding to the article height, and performs counting processing of the count value in the radiation monitor. A large article transport monitor as set forth in claim 1 of the utility model registration claim.