Research Article
LED Context Lighting System in Residential Areas
Table 7
Packet structure of sensor data.
| (a) |
| | 0 | 1 | 2~3 | 4 | 5 | 6~9 |
| | STX (1 byte) | Module ID (1 byte) | Gateway ID (2 bytes) | Module type (1 byte) | Module SW version (1 byte) | Sampling Time
(4 bytes) |
| | 0x02 | PIR: 0x00~0x09
Piezoelectric: 0x1E~0x27
Power: 0x28~0x3B | 0x9999 | PIR: 0x01
Piezoelectric: 0x04
Power: 0x05 | 0x00 | 0x03E8 |
|
|
| (b) |
| | 10~11 | 12~13 | 14~15 | 16~17 | 18 | 19~20 | 21 |
| | Data 0 (2 byte) | Data 1 (2 byte) | Data 2 (2 byte) | Data 3 (2 bytes) | Data 4 (1 byte) | CRC (2 bytes) | ETX (1 byte) |
| | Data (PIR or piezoelectric) | 0x00 (null) | 0x00 (null) | 0x00 (null) | Count | 0x0000 (null) |
0x03 | | Data (power: instantaneous power ) | Data (power: cumulative power) |
|
|
