Photoelectric sensor having special display features
First Claim
1. A photoelectric sensor comprising:
- a sensor unit having a casing, said casing including one surface having a first display and a second display, said first display being a numerical display capable of displaying a plurality of numerical digits and being structured and arranged to display a threshold value that may be set by an operator of said photoelectric sensor, said second display being a numerical display capable of displaying a plurality of numerical digits and being structured and arranged to display actual conditions sensed by said photoelectric sensor, the actual conditions sensed by said photoelectric sensor and displayed on said second display include an amount of light received by said photoelectric sensor and a detection ratio; and
a selection device for selecting different operational values to display on said second display including selecting to display the amount of light received by said photoelectric sensor and the detection ratio, wherein said selection device includes a mechanism disposed on said casing for changing the different operational values on said second display.
1 Assignment
0 Petitions
Accused Products
Abstract
A photoelectric sensor is disclosed that comprises a sensor unit having a casing. The casing includes one surface having a first display and a second display. The first display is structured and arranged to display a threshold value that may be set by an operator of the photoelectric sensor. The second display is structured and arranged to display the actual conditions sensed by said photoelectric sensor. The sensor also includes a selection device for selecting different operational values to display on the second display. The selection device can include a mechanism disposed on the casing for changing the different operational values on the second display. The selection device can also include an adjustment switch disposed on the casing. The adjustment switch allows the operator to adjust the threshold value shown on the first display while the second display shows at least one of the actual conditions sensed by the photoelectric sensor. The photoelectric sensor can be an integrated sensor or can include at least two parts, namely a sensor head and a main body unit. The sensor also can have a plurality of different display setting modes that can be shown on the displays and an operator may set these modes. These different modes include a power setting mode, a hold setting mode and a timer setting mode, each of which can have a plurality of displayable conditions.
26 Citations
22 Claims
-
1. A photoelectric sensor comprising:
-
a sensor unit having a casing, said casing including one surface having a first display and a second display, said first display being a numerical display capable of displaying a plurality of numerical digits and being structured and arranged to display a threshold value that may be set by an operator of said photoelectric sensor, said second display being a numerical display capable of displaying a plurality of numerical digits and being structured and arranged to display actual conditions sensed by said photoelectric sensor, the actual conditions sensed by said photoelectric sensor and displayed on said second display include an amount of light received by said photoelectric sensor and a detection ratio; and
a selection device for selecting different operational values to display on said second display including selecting to display the amount of light received by said photoelectric sensor and the detection ratio, wherein said selection device includes a mechanism disposed on said casing for changing the different operational values on said second display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
a first display mode for displaying a value indicative of an amount of light received by said photoelectric sensor and a value indicative of a detection ratio, the detection ratio being a ratio of the threshold value and the amount of light received by said photoelectric sensor, and a second display mode for displaying a value indicative of the amount of light received by said photoelectric sensor and a value indicative of at least one of a maximum and minimum amount of received light intensity within a predetermined preceding measurement period; and
wherein operation of said selection device changes the display of said second display between the first and second display modes.
-
-
13. A photoelectric sensor as defined in claim 1, further comprising a CPU for processing information, said CPU including:
-
a first display mode for displaying a value indicative of an amount of light received by said photoelectric sensor and a value indicative of a detection ratio, the detection ratio being a ratio of the threshold value and the amount of light received by said photoelectric sensor, and a second display mode for displaying a value indicative of the amount of light received by said photoelectric sensor and a value indicative of at least one of a maximum and minimum amount of the detection ratio within a predetermined preceding measurement period; and
wherein operation of said selection device changes the display of said second display between the first and second display modes.
-
-
14. A photoelectric sensor comprising:
-
a sensor unit having a casing, said casing including one surface having a first display and a second display, said first display being a numerical display capable of displaying a plurality of numerical digits and being structured and arranged to display a threshold value that may be set by an operator of said photoelectric sensor, said second display being a numerical display capable of displaying a plurality of numerical digits and being structured and arranged to display actual conditions sensed by said photoelectric sensor, the actual conditions sensed by said photoelectric sensor and displayed on said second display include an amount of light received by said photoelectric sensor and a detection ratio; and
an adjustment switch disposed on said casing, said adjustment switch allowing adjustment of the threshold value shown on said first display while said second display including selecting to display the amount of light received by said photoelectric sensor and the detection ratio, shows at least one of the actual conditions sensed by said photoelectric sensor. - View Dependent Claims (15, 16, 17)
-
-
18. A photoelectric sensor comprising:
-
a main body unit and a sensor head unit connected by at least one cable, at least one of said main body unit and said sensor head unit including a casing, said casing including one surface having a first display and a second display, said first display being a numerical display capable of displaying a plurality of numerical digits and being structured and arranged to display a property set by an operator of said photoelectric sensor, said second display being a numerical display capable of displaying a plurality of numerical digits and being structured and arranged to display actual conditions sensed by said photoelectric sensor, the actual conditions sensed by said photoelectric sensor and displayed on said second display include an amount of light received by said photoelectric sensor and a detection ratio; and
a selection device for selecting different operational values to display on said second display including selecting to display the amount of light received by said photoelectric sensor and the detection ratio, wherein said selection device includes a mechanism disposed on said casing for changing the different operational values on said second display. - View Dependent Claims (19, 20)
-
-
21. A photoelectric sensor comprising:
-
a main body unit and a sensor head unit connected by at least one cable, at least one of said main body unit and said sensor head unit including a casing, said casing including one surface having a first display and a second display, said first display being a numerical display capable of displaying a plurality of numerical digits and being structured and arranged to display a property set by an operator of said photoelectric sensor, said second display being a numerical display capable of displaying a plurality of numerical digits and being structured and arranged to display actual conditions sensed by said photoelectric sensor, the actual conditions sensed by said photoelectric sensor and displayed on said second display include an amount of light received by said photoelectric sensor and a detection ratio; and
an adjustment switch disposed on said casing, said adjustment switch allowing adjustment of the threshold value shown on said first display while said second display displays at least the amount of light received by said photoelectric sensor and the detection ratio. - View Dependent Claims (22)
-
Specification