ssla-co-uk

We help clients by providing drill riser subsea monitoring embedded software solutions for oil and gas industries.

To develop a drill riser subsea monitoring system that can continuously collect data from various sensor.
Perform a kalman filtering on 1024 readings per sensor
Store the data in primary memory.
Perform Power management algorithm by keeping the CPU in sleep mode and wake mode at regular intervals.
Transfer data to the remote location for real time data monitoring via RS232, RS485 interface.

To choose micro-controller that supports multi thread operation. while consumes less power during run time.
Supports multiple interfaces like i2c, spi, RS232, RS485.
Should have enough internal memory for performing kalman filtering algorithm.
Should interface with external memory for storing sensor data.
Should be capable of sending sensor data to remote device on request.

Atmel cortex M4 with RS232, RS485, SPI, i2C, RTC interface and with 256KB internal memory which supports FreeRTOS for multithreaded functionality.
Sensor PHY chipset that queues 512 readings and can interrupt the CPU on completion of 512 readings.
Host CPU sleeps in this duration and wakes up on interrupt reads the samples stores in the external memory.
On completion of 1024 readings per sensor perform kalman filter algorithm on the samples.
Send the samples to the remote machine on request. via ethernet interface.

Data logger can be automatic so no human presence is necessary
Readings can be continually taken over long periods
There is no chance of somebody forgetting to take a reading
Readings will be more accurate if a computer takes them because there is no chance of human error
Sensors can be placed in locations where it is dangerous for humans to go
Readings can be taken very quickly [several readings every second from a number of different sensors]. Humans could not achieve this.

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