Logistics Internet of Things positioning calibration system

Abstract

The invention discloses a logistics Internet of Things positioning calibration system, which comprises a filtering receiving module and a frequency multiplication comparison module, and is characterized in that the filtering receiving module receives an analog signal before modulation in a logistics Internet of Things positioning transmitter, and is connected with the frequency multiplication comparison module; the frequency multiplication comparison module uses a diode D1 and a diode D2 to form a limiting circuit to limit the signal amplitude, then uses an inductor L2, a capacitor C4, a capacitor C5, an inductor L3 and a capacitor C3 to form a frequency multiplication circuit to amplify the signal frequency, uses an operational amplifier AR2 and a capacitor C7 to form a noise reduction circuit to reduce the signal-to-noise ratio, and uses the decoupling property of the capacitor to filter the signal noise; meanwhile, the +3.3V voltage provides a base potential for the inverting inputend of the operational amplifier AR2, the operational amplifier AR2 adjusts signals through difference, a triode Q2 is used as a PNP triode, low-level conduction is conducted, a power supply +5V compensates an operational amplifier AR4 in-phase input end, the frequency multiplication and voltage stabilization effects are achieved, and the influence of reflection of mountain surrounding terrain ormoisture in severe rain and snow weather is reduced.

Description

Technical field

[0001] The invention relates to the technical field of information positioning and calibration, and in particular to a logistics IoT positioning and calibration system.Background technique

[0002] The Internet of Things is an information carrier such as the Internet and traditional telecommunications networks. It enables all ordinary objects that can perform independent functions to achieve interconnection and interconnection, and realizes the connection of objects and objects. Logistics information reflects the knowledge, materials, images, and contents of various logistics activities. The general term for data and documents. Logistics standardization refers to the formulation of technical standards for internal facilities, mechanical equipment, special tools, etc., as well as various operating standards for packaging, warehousing, loading and unloading, transportation, etc., as a prominent feature of modern logistics. The logistics information standards of the country a...

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