Location:HKH-11Z Zigbee Respiration Sensor

HKH-11Z Zigbee Respiration Sensor

HKH-11L Zigbee Respiration Sensor use piezoelectric principle to acquire the pressure signal produced by human breath, through the signal adjustment circuit, output respiratory waveform data. This sensor uses Zigbee communication, lithium battery, also can detect battery power, adjust the breath wave amplitude automatically.
You can use the Zigbee network server to multi product networking to achieve multiple data synchronization acquisition. Up to 100 sensors nodes can be connected simultaneously, as far as 15 meters of stable transmission distance.
Using the Zigbee Network Server, communication should be set as follows:
Baud rate: 115200
Data format: 1 bit start, 8 bit data, 1 bit stop, no parity check
Data frame format:

Frame Data Description
Header(2 byte) Fixed to 0xF0 0xC0
Target Address (1 byte) Number of receiving equipment(When using a plurality of receiving devices),1-X
Source address (1 byte) Number of the sensor (address),1-X
Magnification (1 byte) Automatically adjust the magnification level,used to calculate the respiratory wave amplitude.
Example: 2 said magnified 2 times, 10 said magnified 10 times.
Battery power (1 byte) Percent, 0-100
Reserved (1 byte) Reserved
Data length (1 byte) Wave data length n
BYTE 1 Wave data 1
BYTE 2 Wave data 1
BYTE n Wave data 1
Checksum The above data summation take the low byte
Example:F0 C0 01 02 05 5A 00 32 X1 X2 … X50 Check

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