The power consumed in a computer is the amount of power required to operate a microprocessor, memory, hard drive, video card, and other peripheral devices. The power consumed may vary depending upon several factors. Some factors are present in any computer but most important are the operating speed, voltage, bandwidth, processor speed, random-access memory size, attached peripheral interface speed, and embedded systems bus speed. In short, the power consumed is the sum of all these components.
Better evaluation of the load
To reduce power consumption, we need to perform several functions. First of all, we need to make a better evaluation of the load that is to be placed on the CPU and related circuits. The worst-case scenario is the system performing very badly. It is better to perform a comprehensive evaluation of the system and find out where and how to make improvements. For example, we can consider adding a chip accelerator or an instruction decode unit to improve the performance.
Reduce active cycles
There are certain instructions like branches and if they are not executed then the processor will perform poorly. We can use several algorithms to reduce active cycles and some of them are branch prediction and branch trimming algorithms. Another way to perform great speed optimization is to combine different methods for doing tasks. For example, we can split the workload into two parts and this splitting can be done automatically by the OS. We can also optimize the tasks performed by the operating system. This can be done using speed optimization tools like the Windows Task Manager, Control Panel, Disk Cleanup tools, etc.
There are also various techniques to make the computer go into sleep mode. If the system is in sleep mode, the microcontroller cannot send a request for any operation which will slow down the processing rate of the computer. So we can also make the microcontroller into the sleep mode using interrupts. This will allow the device to start only when it is necessary and thus the device will not consume any power. We can also consider power-saving measures like enabling the sleep modes and removing all the temporary files and setting the computer using high memory states.
Enable low-power state
All these methods will reduce power consumption. However, we should try to use those methods which will enable the microcontroller to enter low-power modes automatically. For example, we can use timer and microcontroller overclock techniques to increase the clock multiplier value. This will enable the timer to execute the task many times but we should enable the low-power state before executing them. This will help us to prevent the execution of many tasks which will add up the additional load on the microcontroller and therefore it will not consume much power. The other option to reduce the power consumption is to enable the low-power state with stable clocks and do not change them unless absolutely necessary.
Implement timer-based techniques
For further power-efficient operation, we can also consider implementing timer-based or timer looping techniques. These techniques will help us to control the execution of multiple tasks within the same processor. Generally, we can divide the work into many parts and execute the task in a logical manner. Therefore we can consider divides the work into many parts and execute the tasks in various logical manners. We should use a timer-based looping approach and use a timer divider in order to obtain maximum benefit from this technique. If we can implement the above-discussed solutions for reducing the power consumption of our RTU then it will give us the opportunity to have a power-efficient device that will give us more performance than before.