How to develop intelligent electronic products?

1、 Overall design

1. Requirement analysis: our R & D engineers will understand and determine the customer's requirements for the development of intelligent electronic products. For example, determine the amount of data to be measured and the number of paths, determine the objects to be controlled and the number of objects.

2. Solution Determination: our R & D engineers will determine a better way to solve the demand, such as PLC or SCM. After determining to use SCM, we need to determine whether it is 2051 or 8031 or 8051. Of course, we also need to determine which company's product, ATMEL company or Motorola Company's product. When selecting these, not only the performance of the chip, but also the economic factors and practical value should be considered.

2、 Detailed design

1. Circuit selection: select the appropriate circuit according to the needs of the environment. For example, when using 8051 to achieve the control purpose, it is necessary to choose whether to use parallel port or serial port output; when driving high-power circuit, it is also necessary to use SCR or relay. These choices should be decided according to the specific environmental conditions and circuit parameters. If the relay is not suitable for use, other methods must be considered.

2. Making circuit board: use Protel software to make schematic diagram first, then package and make PCB, and then make actual circuit board after printing, transfer printing, corrosion, welding and other processes. We will understand some of the procedures in this step after we study Protel next semester.

3、 Debugging

1. Rough adjustment: use a simple program to debug each function module to see if it can complete the specified task. The main purpose of this step is to see if the circuit is available. For example, the LED should display the corresponding value. If it cannot display normally, the corresponding circuit should be checked.

2. Programming and debugging: under the condition of no error in rough debugging, use the compiled program to debug the whole system. When the programming task is very heavy, we should use the program function block combination, adjust the parameters of the function block appropriately to adapt to the current task. In this step of the debugging process, our company will use the programmer, anti truth device and other tools.

4、 Document

Documentation is very important for a system. It can help examiners understand the uniqueness of the system and increase the interest of others in your system. If the overall design is a good beginning, then a good document is a good ending. Writing documents should be faithful to the original design, we will clarify the design ideas, and let customers understand the benefits of the system.