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An Automated Passenger Detection System

IP.com Disclosure Number: IPCOM000243926D
Publication Date: 2015-Oct-28
Document File: 4 page(s) / 115K

Publishing Venue

The IP.com Prior Art Database

Abstract

An automated passenger detection system is disclosed. The automated passenger detection system includes simple, low-cost pressure sensors. In accordance with the system disclosed herein, pressure sensors are incorporated throughout the passenger area of a bus.

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An Automated Passenger Detection System

Disclosed is an automated passenger detection system. The automated passenger detection system includes simple, low-cost pressure sensors. In accordance with the system disclosed herein, pressure sensors are incorporated throughout the passenger area of a bus. The pressure sensors are calibrated at the beginning of each shift to establish a baseline expected pressure. At the end of each shift the current pressure state is compared against this value. Any deviation produces an alert condition which may trigger an audible alarm, prevent the doors from locking, issue an electronic message, or any such response action.

The system includes an analytic processing unit, ignition switch sensor, and pressure sensors as illustrated in Figure 1. The system may be installed by the bus manufacturer at the factory or after market. The outputs of the solution, including pressure sensor values and alert conditions, may be processed by third party applications in line with the Internet of Things framework.

Figure 1

The analytic processing unit ("APU") as illustrated in Figure 2, is a software-based subsystem which reads the pressure sensor values and determines an alert condition.

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Figure 2

This may be installed on an existing onboard computing unit on the bus or as a stand-alone appliance. The APU receives the output of the vehicle ignition switch sensor and pressure sensors to identify when the vehicle is turned on or off, calibrate the baseline pressure sensor value, and compare the current value against this baseline at the end of each shift.

The logic employed by the APU can be configured to follow the bus driver's workflow. An illustrative example is where a driver starts driving by turning on the vehicle and walking the length of the bus to verify no dangerous objects or unexpected passengers are on board. The driver then starts the journey. In this case the APU waits for the driver to be seated before calibrating the baseline pressure sensor output to ensure the driver's weight is not accounted for in this figure. A variation may be where the driver loads the bus with students while it is still off, such as on a field trip, in which case the APU utilizes a default baseline "zero value" or the value from a previous time the bus was turned off (i.e. the end of the last shift).

At the end of each shift the APU compares the pressure value against the baseline value to determine if an alert condition exists. A tolerance is configured into the APU, such as the baseline value +/- 10 pounds, to reduce...