A gutter oil detection pen and method thereof

Abstract

The invention discloses an illegal cooking oil detection pen and a method of the illegal cooking oil detection pen, belonging to the technical field of grease detection. The illegal cooking oil detection pen comprises a housing, a near infrared probe, a switch, a control circuit, a display and a direct current power supply, wherein the control circuit and the direct-current power supply are arranged in the housing; the switch and the display are arranged on the housing; the near infrared probe is capable of freely entering or exiting from a sharp nozzle of the housing; the control circuit comprises a photoelectric coupler, an A / D (Analog / Digital) converter and a high-speed FPGA (Field Programmable Gate Array) device; an FPGA system part uses a dual-port SDRAM (Synchronous Dynamic Random Access Memory), a controller, a register, a counter and a divider. Near infrared spectrum signals at sites of 885nm and 897nm within a waveband range are extracted during detection, and a result obtained by dividing the near infrared spectrum signals is displayed on the display, and then compared with a threshold, thus whether an oil product to be detected is illegal cooking oil or not is obtained. The illegal cooking oil detection pen does not need to be in contact with a sample, so no pollution is caused, and the operation is simple.

Description

technical field [0001] The invention relates to the technical field of grease detection, in particular to a gutter oil detection pen and a method thereof. Background technique [0002] my country is a country with a large population, and there is a great demand for cooking oil. However, in recent years, criminals have pushed gutter oil to people's tables, posing a serious threat to food safety and consumers' health. Because there are many types and components of waste oil, and it is difficult to distinguish the waste oil refined with precision from edible oil, at present, there is no effective method for identifying waste oil both at home and abroad. In addition to enabling the effective distinction between qualified edible oil and gutter oil, detection technology is also required to be able to quickly and accurately identify on-site. [0003] The existing gutter oil detection technology depends on the laboratory environment, the processing process is comp...

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Problems solved by technology

[0004] The invention aims to solve the problems that the existing waste oil detection technology is greatly affected by the outside world, the processing process is complicated, the detection speed is slow, and the accuracy is poor, and a convenient, real-time and accurate waste oil detection pen and its method are provided.

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