I am thinking of using a Panasonic Analog PIR Sensor (EKMC2605113K) (EKM - Horizontally Wide Detection) for Motion detection. I will be using Arduino 33 BLE Sense for this project.
It will be really helpful if someone can clarify/correct upon the queries/assumptions I have about the Electrical Characteristic Specification of the Sensor :
These are from the Panasonic Website for reference.
The Operating Voltage ,V_dd, is mentioned as Max 5.5 and Min 3.0 V and current consumption is Max 350 microAmps :
So this means I can use it on Arduino 33 Ble which can supply 3.3V. Am I correct?
Analog Output Saturated Voltage (V_H and V_L) are min 1.9V and Max 0.2V. The Output current during detection is mentioned as 200 microAmps :
Can someone explain what this signifies?
- Does this mean the maximum and min voltage at the sensor output will be 1.9V and 0.2V respectively during detection? Or does this just mean that the linearity range of the sensor is between 1.9V and 0.2V .
- Does this also mean that the maximum output voltage from the sensor is 1.9V ( In general, how to get the maximum output voltage of the sensor, shall I add the output offset voltage(max) to this Saturation voltage?)
Output Offset Voltage(at non-detection), V_Off, is mentioned as V_Max = 1.2 , V_Avg= 1.1V and V_Min = 1.0V :
I understand , in case of Op-Amp this refers to voltage at the output when the inputs of the Op-Amp is shorted. What does this attribute signifies w.r.t to this sensor?
It is highlighted that I need to measure the Output Offset Voltage before setting the threshold window for detection. Am I correct in my understanding that this offset voltage will be the result of environment when there is no detection and this voltage (Offset Voltage Specification of 1.2V to 1V) will always be there at the output of the sensor and when there a detection then a Voltage (in addition to the offset voltage) of 0.2V to 1.9V (from the Analog Saturated Voltage Specification).
I will be really grateful if someone can guide me or refer me to resources which can give me an understanding about these Electrical Characteristics specifications w.r.t to sensors. I am just starting in this Embedded systems domain and please forgive me if I am unable to get something trivial. I read up on Op-amps but am having a hard time relating these to a sensor specification.