Internet-of-Things terminal capable of automatically adjusting transmission power by means of laser ranging

Abstract

The invention discloses an Internet-of-Things terminal capable of automatically adjusting transmission power by means of laser ranging. The terminal comprises a master control unit, a radio frequency unit and a storage unit and is provided with a laser ranging program, a laser ranging probe is mounted in the back shell of the terminal, a transmission and receiving window of the laser ranging probe is exposed outside the back shell, a radio frequency antenna is mounted in the back shell of the terminal and arranged under the laser ranging probe, the main radiation direction of the radio frequency antenna is perpendicular to the back surface of the shell, and the transmission direction of the laser ranging probe is parallel to the main radiation direction of the radio frequency antenna. The laser ranging probe is added on an original handheld Internet-of-Things terminal, so that the integral terminal is capable of automatically adjusting transmission power according to target distance after matched with software, and labor intensity of operators is reduced. Meanwhile, misunderstanding of remote targets is avoided, and terminal availability and system reliability are improved.

Description

technical field [0001] The present invention relates to a hand-held Internet of Things terminal, in particular to an Internet of Things terminal that can automatically adjust transmission power by using laser ranging and being applied in the fields of electronic license plate and ETC. Background technique [0002] Handheld IoT terminals are widely used, but in the process of ETC, electronic license plate issuance, charging and other operations, the problem that the distance from the terminal transmitting antenna to the tag cannot be determined is often encountered, because the power of the transmitting antenna will affect the reading distance of the tag , When preparing to read the previous target, due to the short distance and excessive transmission power, the latter tag will be read at the same time, which may cause misreading. At this time, the user needs to control the distance from the transmitting antenna to the target to be read or manually reduce the transmitting pow...

AI Technical Summary

Problems solved by technology

[0002] Handheld IoT terminals are widely used, but in the process of ETC, electronic license plate issuance, charging and other operations, the problem that the distance from the terminal transmitting antenna to the tag cannot be determined is often encountered, because the power of the transmitting antenna will affect the reading distance of the tag , when preparing to read the previous target, due to the short distance and excessive transmission power, the latter tag will be read at the same time, which may cause misreading

At this time, the user needs to control the distance from the transmitting antenna to the target to be read or manually reduce the transmitting power to avoid misreading, which brings great inconvenience to the user.

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