Omron Corporation

Takayoshi Takahara

Kazunori Osako

Koyuru Nakano

Toshinori Sato

Satoru Shimokawa

Tetsuya Akagi

Nobuchika Takiguchi

Hisashi Takeuchi

Shunsuke Mogi

Fumihiko Misumi

Ryo Kozawa

Yasushi Miyake

Yasunobu Sakai

Shunsuke Ito

A multi-optical axis photoelectric sensor is provided having a casing that forms an outer shape of each of a projector and an optical receiver. The casing includes a frame body having a front face and two ends opened, a pair of caps to cover both ends of the frame body, and a light transmissive plate to cover the opened front face of the frame body. In the inner surfaces of both side plates of the frame body, supports are formed extending along the corresponding side edges of the opening of the front face. Both side edges of the light transmissive plateare supported by the supports, and both ends thereof are supported by the caps. Portions of the caps that support the light transmissive plateinclude communication portions to communicate with the supports of the frame body, and a string-like elastic member is disposed around a closed loop formed by each support and each communication portion. The light transmissive plateis held between the string-like elastic member and at least one fixing member disposed for the frame body and the caps. This configuration facilitates fixing of the light transmissive plate and changing of a size of the frame body.

Multi-optical axis photoelectric sensor

This invention enables a worker, who performs a work for optical axis adjustment, to easily grasp whether adjustment for further increasing the light receiving quantity is possible. In a multi-optical axis photoelectronic sensor, a minimum value of the light receiving quantities obtained for every optical axis is detected every time a process of measuring, while lighting each light emitting elementby turns, the light receiving quantity of a light receiving element corresponding to a lighted light emitting elementis repeated for one cycle, and a peak value of the minimum light receiving quantities detected in the past is detected. A bar graph based on specific values of the most recent minimum light receiving quantity and the peak value, or a bar graph showing a proportion of the most recent minimum light receiving quantity with respect to the peak value is displayed using a plurality of indication lights, each arranged on the front surfaces of a light projectorand a light receiver. The bar graph changes according to the update of the peak value and the fluctuation in the value of the minimum light receiving quantity of every hour.

Multi-optical axis photoelectronic sensor

Attachment for multi optical axis photoelectric sensor

Multi optical axis photoelectric sensor

To provide a multi-optical axis photoelectric sensor and a multi-optical axis photoelectric sensor system, which enable function setting by an extremely simple operation, and further make it unnecessary to increase the size of a housing or to separately prepare a PC or a function setting tool. The multi-optical axis photoelectric sensor has: a columnar housing, from one end of which in the longitudinal direction an electric cord is pulled out, and at the other end of which in the longitudinal direction a plug-in type socket is provided, and a plug piece detachably attachable to the socket of the columnar housing. Particular information to serve as a function determining element on the columnar housing side is incorporated in the plug piece in a manner referenceable from a processing circuit on the columnar housing side via the socket. Further, the processing circuit on the columnar housing side is set so as to determine a function based upon particular information in the plug piece referenced via the socket.

Multi-optical axis photoelectric sensor system

A multi-beam photoelectric sensor is disclosed which can be fabricated by selecting the length of a light projection/light-receiving columnar member and the number and pitches of optical axes in accordance with the width of a hazardous area of an object or the diameter of the minimum object to be detected. A projector string or a photo-detector string includes an optical module string having an alignment of a plurality of optical modules with an optical system for one optical axis, a light projection circuit for one optical axis and a plurality of flip-flops corresponding to one stage of a shift register, integrated with each other, and a flat cable. The flip-flops in the adjacent optical modules are connected in cascade by the adjacent module conduction wires thereby to make up a shift register. The optical modules making the optical module string are sequentially activated by the data sequentially sent by the shift register.

Area monitoring multi-beam photoelectric sensor

A control unit ( ) provided on each of a plurality of operating units for integrating the whole of such an operating unit group that operating units performing a certain operation plurally aggregate and making the same perform regularly operation control includes a signal transmission part ( and ) and a signal receiving part ( and ) for communicating with the adjacent operating unit, and a connection determination part ( ) determining whether or not it is located on a predetermined start position forming a start point of integrated control in the operating unit group on the basis of relative positional relation obtained as a result of performing a communicating operation for deciding the operating unit as a master operating unit when determined as located on the start position while deciding it as a dependently operating slave operating unit when determined as not located on the start position. Thus, an operation integrated control method in which the operating unit can determine whether it is the master operating unit or the slave operating unit itself and a control unit therefor are provided.

General operation integrated control method and its controller

Growing community of inventors

Kusatsu, Japan

Takayoshi Takahara