Analog input slave and monitoring system

• US 20050216101A1
• Filed: 03/14/2005
• Published: 09/29/2005
• Est. Priority Date: 03/15/2004
• Status: Abandoned Application

• Current Assignee: Omron Corporation
• Original Assignee: Omron Corporation
• Inventors: Shimizu, Hiroshi
• Application Number:
  US11/079,013
• Publication Number:
  US 20050216101A1
• Time in Patent Office: Days
• US Class Current: 700/20
• CPC Class Codes: G05B 19/0423 Input/output

Abstract

An analog input slave having an analog input portion and a network connecting portion, includes: i) a total time calculating device for seeking a total time when data acquired from the analog input portion is within a set range; ii) a comparing device for comparing the total time sought by the total time calculating device with a threshold; and iii) a sending device for sending from the network connecting portion a comparison result by the comparing device.

Claims

1. An analog input slave having an analog input portion and a network connecting portion, comprising:

i) a total time calculating means for seeking a total time when data acquired from the analog input portion is within a set range;

ii) a comparing means for comparing the total time sought by the total time calculating means with a threshold; and

iii) a sending means for sending from the network connecting portion a comparison result by the comparing means.

2. The analog input slave as claimed in claim 1, wherein the threshold specifies at least one of a replacement timing and a maintenance timing of at least one of the following:

a device connected to the analog input portion, and

a monitoring object to which the device is connected.

3. The analog input slave as claimed in claim 1, wherein the comparison result is sent to a network when the total time exceeds the threshold.

4. A monitoring system, comprising:

the analog input slave according to claim 1;

and

a controller connected to the analog input slave by way of a network,

wherein the controller acquires the comparison result of the analog input slave.

5. An analog input slave having an analog input portion and a network connecting portion, comprising:

i) a sensing means for sensing at least one of a top and a valley of data acquired from the analog input portion;

ii) a counting means for counting the number of the at least one of the tops and the valley which are sensed with the sensing means;

iii) a comparing means for comparing the number counted by the counting means with a threshold; and

iv) a sending means for sending from the network connecting portion a comparison result by the comparing means.

6. The analog input slave as claimed in claim 5, wherein the threshold specifies at least one of a replacement timing and a maintenance timing of at least one of the following:

a device connected to the analog input portion, and

a monitoring object to which the device is connected.

7. The analog input slave as claimed in claim 5, wherein the comparison result is sent to a network when the number exceeds the threshold.

8. A monitoring system, comprising:

the analog input slave according to claim 5;

and

a controller connected to the analog input slave by way of a network,

wherein the controller acquires the comparison result of the analog input slave.