System and method for detecting number of people in vehicle and carriage

Abstract

The invention discloses a system and method for detecting the number of people in a vehicle and a carriage. The system comprises a vehicle-mounted server, a reader-writer, an automatic phase modulator, and an antenna array module, wherein the vehicle-mounted server transmits a people number detection instruction to a reader-writer and receives the digital signal sent by the reader-writer to determine the number of passengers in the carriage; the reader-writer generates a first radio frequency signal according to the people number detection instruction, sends the first radio frequency signal tothe automatic phase modulator, receives a second radio frequency signal sent by the automatic phase modulator, demodulates the signal to obtain a digital signal, and sends the digital signal to the vehicle-mounted server; the automatic phase modulator is used for carrying out phase modulation processing on the first radio frequency signal and sending the first radio frequency signal to the corresponding antenna array module, receiving a second radio frequency signal sent by the corresponding antenna array module, and sending the signal to the reader-writer; and the antenna array module transmits the first radio frequency signal subjected to phase modulation processing to a riding card of a passenger, receives a second radio frequency signal sent by the riding card, and sends the second radio frequency signal to the corresponding automatic phase modulator. The system can accurately determine the number of passengers in the carriage.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a detection system for the number of people in a car, a method for detecting the number of people in a car and a vehicle with the detection system. Background technique [0002] There are two types of identification technologies for the number of passengers in the carriage: one is based on the way of recording and recording people's head portraits by cameras; the other is based on the existing radio frequency identification technology, and the existing radio frequency identification technology is generally based on the omnidirectional antenna module. Development, the actual use effect is not ideal. [0003] The disadvantage of the prior art is that the effect is not ideal, and the accuracy of counting the number of people is not high. The main reason is that the antenna used for the radio frequency identification module detection is a common omnidirectional antenna (such as fig...

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Problems solved by technology

[0002] There are two types of identification technologies for the number of passengers in the compartment: one is based on the way of recording and recording people's head portraits based on cameras; the other is based on existing radio frequency identification technology, and existing radio frequency identification technology is generally based on omnidirectional antenna modules. Development, the actual use effect is not ideal

[0003] The disadvantage of the prior art is that the effect is not ideal, and the accuracy of counting the number of people is not high. The main reason is that the antenna used for the radio frequency identification module detection is a common omnidirectional antenna (such as figure 1 shown), the antenna is characterized by good directivity, but the detection power is not high. For example, under the premise of the same transmission power, for a complex environment such as the carriage, it is obviously impossible to accurately count the passenger tags, so that it cannot be accurately determined The number of people carrying tags in the compartment

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