Methods and systems optimizing swimming pool and restaurant service operations by utilizing occupancy detection device

An occupancy detection device comprising:

• a microprocessor unit, at least one sensor, at least one light source, a speaker, at least one power source and a radio,
• wherein the at least one sensor is selected from an accelerometer sensor, an underwater microphone sensor, a time of flight sensor (time-of-flight, ToF), a liDAr sensor, a laser sensor, an ultrasound sensor and a sonic sensor;
• wherein said occupancy detection device is placed in a swimming pool and in contact with water;
• wherein the swimming pool is configured with a pool pump controller and/or an automation system (automation center) to control a pool pump, a run schedule of the pool pump and a speed of the pool pump;
• wherein said occupancy detection device detects an occupancy status of the swimming pool with the at least one sensor, or the occupancy status of the swimming pool and at least one of a first group of statuses, or the occupancy status of the swimming pool, at least one of the first group of statuses and/or at least one of a second group of statuses,
• wherein the occupancy status of the swimming pool indicates at least one of a presence of at least one person in the swimming pool, a presence of at least one pool cleaner in the swimming pool, a presence of at least one object in the swimming pool, a presence of at least one device in the swimming pool, a presence of at least one animal in the swimming pool and a presence of at least one operating device in the swimming pool,
• wherein the first group of statuses are a rain status over the swimming pool, a wind status over the swimming pool, a sunlight load status over the swimming pool, a water depth status in the swimming pool, a water amount status in the swimming pool and a pool pump status, wherein the second group of statuses are a water temperature of the swimming pool, an air temperature over the swimming pool, a water pH level of the swimming pool, a water chemical composition of the swimming pool and a water presence in the swimming pool;
• wherein said occupancy detection device is used as a single detector device or configured as an occupancy detector network, wherein the occupancy detector network is configured as a mesh network or a star network, wherein the mesh network and the star network are comprised by network and protocol structure of at least one of Bluetooth, ZigBee, ZWave, Wi-Fi, Wirepas, Thread, 6LoWPAN, and any other wireless networks and protocols that allow wireless mesh network structure and/or wireless star network structure;
• and
• wherein said occupancy detection device communicates wirelessly with the radio the occupancy status of the swimming pool to the automation system and a chemical treatment device, or the pool pump controller and the chemical treatment device.