摘要：【中文】本发明公开了一种不同水压下各种型号水表的测准系统，包括循环水池和循环水池连通的供水管，所述供水管上设置有水泵与电磁流量计，所述供水管上连接有数条与循环水池相连通的水表测准管路，所述水表测准管路上设置有阀门、串联与并联相组合的待测准水表。本发明提供了一种不同水压下各种型号水表的测准系统，能准确方便的在不同水压下对各种型号、各种口径的水表进行对比测准，方便在不同水压条件下选择计量最准确的水表使用。 【EN】The invention discloses a calibration system for various types of water meters under different water pressures, which comprises a circulating water tank and a water supply pipe communicated with the circulating water tank, wherein a water pump and an electromagnetic flowmeter are arranged on the water supply pipe, a plurality of water meter calibration pipelines communicated with the circulating water tank are connected to the water supply pipe, and valves and calibration water meters to be tested which are combined in series and parallel are arranged on the water meter calibration pipelines. The invention provides a measuring and calibrating system for water meters of various types under different water pressures, which can accurately and conveniently compare and measure the water meters of various types and various calibers under different water pressures and is convenient for selecting the water meter with the most accurate measurement under different water pressure conditions.

摘要：【中文】一种非接触式人体睡眠生理参数检测传感器换能单元，属于压电薄膜技术领域。本发明包括电路板、压电薄膜和导电胶，压电薄膜包括膜片、分别设于膜片两个侧面上的两个电极，压电薄膜贴于电路板上，压电薄膜的两个电极分别通过导电胶电连接至电路板上的两个裸露焊盘电极。本发明结构简单，易于装配及大规模生产，同时机电转换效率高。 【EN】A non-contact human sleep physiological parameter detection sensor transduction unit belongs to the technical field of piezoelectric films. The piezoelectric film comprises a circuit board, a piezoelectric film and conductive adhesive, wherein the piezoelectric film comprises a diaphragm and two electrodes respectively arranged on two side surfaces of the diaphragm, the piezoelectric film is attached to the circuit board, and the two electrodes of the piezoelectric film are respectively and electrically connected to two exposed pad electrodes on the circuit board through the conductive adhesive. The invention has simple structure, easy assembly and large-scale production and high electromechanical conversion efficiency.