Fast detection system for amount of stored oil

The invention provides a fast detection system for the amount of stored oil. The fast detection system is used for detecting the amount of stored oil in an oil storage tank. The system comprises a non-contact type liquid level detection node, a plurality of temperature liquid level detection nodes, a portable density detection node and a data terminal. The data terminal communicates with the non-contact type liquid level detection node, the temperature liquid level detection nodes and the portable density detection node in a wireless or wired manner. Each temperature liquid level detection node consists of an MCU (Microprogrammed Control Unit) module, a hollow floater tube, a preventive plastic tube, a ferromagnetic floater, and a temperature detection module, a magnetic resistance detection module and a capacitance detection module which are connected with the MCU module. The ferromagnetic floater is arranged in the hollow floater tube, the temperature detection module, the magnetic resistance detection module and the capacitance detection module are all arranged in the preventive plastic tube, the temperature detection module comprises a plurality of temperature sensors which are distributed at equal intervals, the magnetic resistance detection module comprises a plurality of magnetic resistance sensors which are distributed at equal intervals, and the capacitance detection module is arranged at the bottom of the preventive plastic tube.