Hydrogen sensor and preparation method thereof

The invention discloses a hydrogen sensor and a preparation method thereof, belongs to the technical field of sensors, and is used for solving the technical problem that an existing hydrogen sensor is weak in anti-interference performance. The hydrogen sensor specifically comprises a silicon wafer substrate, and a thin film electrical isolation layer is arranged on the silicon wafer substrate; a heating resistor, a temperature measuring resistor and a hydrogen sensitive resistor are arranged on the film electrical isolation layer, the heating resistor, the temperature measuring resistor and the hydrogen sensitive resistor are all provided with lead ends, and an organic polymer film layer is arranged above the hydrogen sensitive resistor. The invention has the advantages of stable performance, long service life, low cost, good anti-interference performance and the like. 本发明公开了一种氢气传感器及其制备方法，属于传感器技术领域，用于解决目前氢气传感器抗干扰性能弱的技术问题，氢气传感器具体包括硅片衬底，所述硅片衬底上设有薄膜电气隔离层，所述薄膜电气隔离层上设有加热电阻、测温电阻和氢敏电阻，所述加热电阻、测温电阻和氢敏电阻均设置有引线端，所述氢敏电阻的