Car occupancy detector (hearbeat sensor Volvo) with Bluetooth integration and support

Car occupancy detector (hearbeat sensor Volvo) with Bluetooth integration. Project brief: The main objective of the project is to replicate the wireless heart beat sensor from Volvo also integrate PIR or Thermal for better reliability of the system. Other features to include Bluetooth integration and backup battery and inclusion of c02 sensor. Main parts of the project: 1) Heartbeat sensor replication 2) Integration of PIR/Thermal sensor. 3) Battery management including charging 4) Bluetooth integration 5) C02 sensor Quote for the project: Total quote for the project is $7000 in 75 days Breakdown: 1) Replication of heartbeat sensor and C02 sensor: $3500. 2) Integration of PIR/Thermal: $1500 3) Battery management: $500. 4) Bluetooth integration: $1500. Project deliverables: 1) Schematics. 2) PCB layout. 3) Firmware and source code. 4) BOM and gerber files. 5) one fully functional prototype system. (Casing design is not included) Milestone breakdown: 1) Initial upfront 40% 2) Upon completion of the Prototype before shipment. 40% 3) When you receive the prototypes and test it fully on your end. 20% Remarks: With the integration of the PIR sensor along with the original Volvo sensor topology the reliability of the system would be much higher. The presence of the presence can even be detected even the engine is running and music is playing inside the car.