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sensor system

A sensor and sensor unit technology, applied in the field of sensor systems, can solve problems such as deterioration of measurement accuracy, longer light-emitting cycle of photoelectric sensors, and lower response speed

Active Publication Date: 2016-10-05
ORMON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in a system in which photosensors with a short light emission period and photosensors with a long light emission period can be mixed, the light emission period of the photoelectric sensor at the lower stage becomes unnecessarily long.
As a result, the response speed decreases and the measurement accuracy deteriorates.

Method used

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Experimental program
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Embodiment Construction

[0042] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals are assigned to the same components. Their names and functions are also the same. Therefore, their detailed descriptions are not repeated.

[0043] refer to figure 2 , the sensor system of this embodiment is constituted by a plurality of types of photosensor units 1 including a plurality of photosensor units 1 . As an example, the types are classified according to operation (light projection) time, wavelength, cycle, amplitude, frequency, and the like of projected light. That is, the light projection time, the wavelength, cycle, amplitude, frequency, and the like of projected light differ for each type. The sensor system may also include an ultrasonic sensor unit, a proximity sensor unit, etc. in addition to the photoelectric sensor unit 1 , or may replace the photoelectric sensor unit 1 with an ultrasonic sen...

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Abstract

Provided is a sensor system that realizes arbitrarily determined light projection periods for each type and prevents mutual interference between the same type in a sensor unit system having a plurality of photoelectric sensor units. The sensor system has a plurality of sensor units combined via a connection unit to be able to transmit signals. Each sensor unit holds its own identification information, and sets its own unique identification number by transmitting signals to each other. In addition, each sensor unit operates after a delay time determined according to each identification number starting from a synchronization signal transmitted at a predetermined cycle from a sensor unit having a specific type number among a plurality of sensor units. synchronization signal. The delay time of each sensor unit is determined such that the operation period matches a predetermined period determined for each type of information and differs from the delay time of other sensor units having the same type information.

Description

technical field [0001] The present invention relates to a sensor system, and particularly relates to a technique for controlling the light projection period of each sensor unit in a sensor system having a plurality of sensor units. Background technique [0002] In a production line or the like, the presence or absence of a workpiece (detection object) is determined based on a physical quantity such as the amount of light received by a sensor. Regarding physical quantities, detection is performed at various places. That is, a plurality of sensors are provided. In this case, for example, the light receiving part of a photosensor may be arranged near the light receiving part of another photosensor. In this case, the light projected from a certain photoelectric sensor may enter the light receiving part of another photoelectric sensor, which may degrade the determination accuracy. In view of such a problem, a method of preventing mutual interference is used by making the opera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/58G08C23/04G01S17/04G01S17/87
CPCG01S17/87G01S7/003G01S7/497G01S7/4818H03K2217/94094G01V8/20H04L12/40019H04L12/4015H03K17/941H03K17/943H03K2217/94104H03K2217/94108G01S17/04G01J1/4228
Inventor 饭田雄介井口康二岸场秀行权藤清彦
Owner ORMON CORP