FIELD DEVICE AND DATA PROCESSING METHOD

• US 20150019154A1
• Filed: 07/09/2014
• Published: 01/15/2015
• Est. Priority Date: 07/11/2013
• Status: Active Grant

• Current Assignee: Yokogawa Electric Corporation
• Original Assignee: Yokogawa Electric Corporation
• Inventors: USAMI, Katsuji, KITANO, Tetsuya
• Granted Patent: US 10,585,899 B2
• Time in Patent Office: Days
• US Class Current: 702/100
• CPC Class Codes: G01F 1/00 Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow measuring a proportion of the volume flow G01F5/00
• CPC Class Codes: G05B 19/406 characterised by monitoring or safety G05B19/19 takes precedence
• CPC Class Codes: G06F 12/1416 by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights G06F12/1458 takes precedence
• CPC Class Codes: G06F 16/24575 using context

Abstract

A field device includes one or more processors configured to perform a first processing with reference to safety-critical data and a second processing with reference to safety-uncritical data which is less critical than the safety-critical data, wherein the one or more processors are configured to generate a first request for storing the safety-critical data in the second processing, store the safety-critical data into a storage unit in the first processing in accordance with the first request, and store the safety-uncritical data into the storage unit in the second processing.

Claims

1. A field device comprising:

one or more processors configured to perform a first processing with reference to safety-critical data and a second processing with reference to safety-uncritical data which is less critical than the safety-critical data, wherein

the one or more processors are configured to;

generate a first request for storing the safety-critical data in the second processing;

store the safety-critical data into a storage unit in the first processing in accordance with the first request; and

store the safety-uncritical data into the storage unit in the second processing.

2. The field device according to claim 1, wherein

the one or more processors are configured to prohibit storing the safety-critical data into the storage unit during the second processing.

3. The field device according to claim 2, wherein

the one or more processors are configured to read the safety-critical data out of the storage unit in the second processing.

4. The field device according to claim 2, wherein

the one or more processors are configured to:

prohibit reading the safety-critical data out of the storage unit during the second processing,

generate a second request for reading the safety-critical data in the second processing, and

read the safety-critical data out of the storage unit in the first processing in accordance with the second request.

5. The field device according to claim 1, further comprising:

a sensor,

wherein the safety-critical data includes data for setting measurement range of the sensor, data for adjustment or calibration of the sensor, and data indicating a characteristic peculiar to the sensor.

6. The field device according to claim 5, wherein

the one or more processors are configured to perform a processing of signals acquired from the sensor in the first processing.

7. The field device according to claim 5, wherein

the sensor is configured to measure flow amount of fluid flowing in a pipe.

8. The field device according to claim 1, wherein

the field device is connectable to a controller supplying data and request commands to the field device, and

the safety-uncritical data includes communication data between the field device and the controller.

9. The field device according to claim 8, wherein

the one or more processors are configured to perform a communication processing between the field device and the controller in the second processing.

10. The field device according to claim 8, wherein

the one or more processors are configured to check whether or not data received from the controller is proper in the second processing.

11. The field device according to claim 10, wherein

in a case where the data received from the controller is not proper, the one or more processors return the data to the controller as a communication error, and

in a case where the data received from the controller is proper, the one or more processors perform processing of judging a type of the data received from the controller.

12. The field device according to claim 11, wherein

in a case where data for setting measurement range of the sensor is received from the controller, the one or more processors check whether or not the data received from the controller is proper by judging whether or not the data received from the controller is within a predetermined range.

13. The field device according to claim 11, wherein

in the processing of judging the type of the data received from the controller, the one or more processors judge whether the data received from the controller is the safety-critical data or the safety-uncritical data with reference to a table relating data to type of data.

14. The field device according to claim 1, wherein

the one or more processors perform the first processing which is important for safety.

15. The field device according to claim 1, wherein

the one or more processors are perform the second processing which has little effect on safety.

16. A field device comprising:

one or more processors configured to perform a first processing with reference to safety-critical data and a second processing with reference to safety-uncritical data which is less critical than the safety-critical data, and

a storage controller configured to control storing data into a storage unit, wherein

the one or more processors are configured to generate a first request for storing the safety-critical data in the second processing,

the storage controller is configured to;

store the safety-critical data into the storage unit in the first processing in accordance with the first request; and

store the safety-uncritical data into the storage unit in the second processing.

17. The field device according to claim 16, wherein

the one or more processors are configured to prohibit from storing the safety-critical data into the storage unit.

18. A data processing method comprising:

performing a first processing with reference to safety-critical data by one or more processors;

performing a second processing with reference to safety-uncritical data which is less critical than the safety-critical data by the one or more processors;

generating a first request for storing safety-critical data in the second processing by the one or more processors;

storing the safety-critical data into a storage unit by the one or more processors in the first processing in accordance with the first request; and

storing the safety-uncritical data into the storage unit by the one or more processors in the second processing.

19. A data processing method comprising:

performing a first processing with reference to safety-critical data by one or more processors;

performing a second processing with reference to safety-uncritical data which is less critical than the safety-critical data by the one or more processors;

generating a first request for storing safety-critical data in the second processing by the one or more processors;

storing the safety-critical data into a storage unit by a storage controller in the first processing in accordance with the first request; and

storing the safety-uncritical data into the storage unit by the storage controller in the second processing.