Global Proximity and Displacement Sensor Market By Type (Inductive Sensors , Photoelectric Sensors , Capacitive Sensors , Ultrasonic Sensors , Magnetic Sensors , and LVDT Sensors), By Application (Parking Sensor System , Ground Proximity Warning System , Vibration Monitoring System , Anti-aircraft Warfare , Roller Coaster , Conveyor System , Mobile Device , and Assembly Line Testing), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029