2018.5.8 Project review

1 .product introduced

A. Function requirement (customer)

The product function is control the 1KW and 2KW Loading ,It's based on PIC micr-chip .used in industrial heaters.products need sample and realiable.The modularized distribute control technique, power  supply, mechanical shell, hardware, software,network debug diagnosis and safety design of the system characteristic have been described.

B. Parameter requirement (Balance)

1 MCU： use pic  for Low-cost

2 reliability： 200000  times test

3 power：220-240V  AC 50HZ

4 CC ， ROHS，EMI/C  Certificate

C. Feasibility analysis

EE: ok

ME: ok   packaging and  mechanical shell

Cost analysis: ok    swtich  is key

Software：ok

other：In addition to the special requirements, it is necessary to meet the requirements for the assembly of the manufacturing circuit board. For details, please refer to the floor technology standard.

2. Circuit  designed

A  Appropriate programs

B Simulations

Just software debug.

C sch and demo

3 Fireware

a Structure diagram

b Flow diagram

c coding

4 PCB Layout

a Bom : ok

b Layot: ok

c EMI/C : ok

5 DFMEA

A. Functional specifications

Engineer characteristic ok

Function ok

B. Appearance  specifications

packaging test  ok

Software test ok

reliability test ok

panting Gerber check  ok

C.Control characteristics

CPK test  5%

QC Check   Pass

D. Safety requirements

Defend jig

General design

W I   Work instruction

6 Mass  production

   we find 5 pcs NG samples： fireware can't record

A  Test device

Add a temperature control system in test device.

B  CPK   ok