Development of simple apparatus for measuring liquid-concentration by ultrasonic light diffraction effect

利用超声波光衍射效应测量液体浓度的简易装置的研制

• 批准号: 12650051
• 负责人: IKEDA Kiyoshi
• 金额: $ 0.51万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650051/
• 关键词: liquid concentration; acousto-optic effect; ultrasonic measurement; light deflection; sound velocity; saccharose solution; Raman-Nath diffraction; food industry; 超音波

We developed a measuring apparatus which has the absolute value for a sensitivity of the tracker voltage ,i.e., 35.3m V/ % at the driving ultrasonic frequency of 29.998 MHz using Raman-Nath diffraction effect owing to measure the concentration of the NaCl and saccharose solutions as liquid specimens. A summary of the other achievements is shown below.1. In the case of measuring the concentration for the 0.0-1.0 % NaCl and 0.0-5.0 % sugar solution, its measuring system may be designed using a deviation factor of 0.0078.2. Moreover, it became clear that the same temperature-compensation factor can be used for both the NaCl and sugar solutions deriving from the empirical equations of sound velocity. Specifically, its value in a 0.0-1.0 % NaCl solution at f_o=2.15 MHz for the PLLM is 3.381 kHz/℃, and that in a 0.0-5.0 % sugar solution is 3.379 kHz/℃ within the range of 25℃ ±2℃.3. The basic measuring values are obtained by the use of measuring apparatus which is equipped on the simple steel experimental optical tables without the vibration isolation mechanism4. There is no necessity for using always the glass plate for the transmission plane of the AO cell. The acrylic plate is enough suitable for the transmission plane for light at the cell.5. The most suitable value for the distance between the vidicon camera tube and the bright spot on the screen at the iris diaphragm is 30〜100mm to measure extreme sensitively the tracker voltage at the frequency used Raman-Nath diffraction effect.6. A temperature-compensation circuit is necessary due to the frequency proportional coefficient for the temperature sensitivity S_<tf> = 0.201 mV/ ℃.・MHz.7. From the experimental results and the deviation factor derived using the empirical equation of sound velocity obtained by the phase-locked loop ( PLL ), it was found that the sensitivity for the PLL-type AO improves 2.35 times that for an ordinary AO at f_a = 22.898 MHz.

我们开发了一种测量装置，其具有跟踪器电压灵敏度的绝对值，即，在29.998MHz的超声激励下，利用拉曼-纳斯衍射效应测量了NaCl和蔗糖溶液的浓度，得到了35.3mV/ %的激光能量。其他成就概述如下。在测量0.0- 1.0%NaCl和0.0- 5.0%糖溶液的浓度的情况下，其测量系统可以使用0.0078.2的偏差因子来设计。此外，很明显，相同的温度补偿因子可以用于从声速的经验方程导出的NaCl和糖溶液。在25℃ ±2℃范围内，0.0- 5.0%NaCl溶液中，在f_0 = 2.15MHz时，PLLM的频率响应值为3.381kHz/℃;在0.0- 5.0%蔗糖溶液中，PLLM的频率响应值为3.379kHz/℃.基本测量值是通过使用安装在没有隔振机构的简单钢制实验光学平台上的测量装置获得的。没有必要总是使用玻璃板作为AO单元的透射平面。丙烯酸板是足够适合的光在细胞的传输平面。5.在利用拉曼-纳特衍射效应的频率下，为了极灵敏地测量跟踪器电压，摄像管与屏幕上的亮点在可变光阑处的距离最合适的值为30 × 100 mm.由于温度灵敏度S_ = 0.201 mV/ ℃的频率比例系数，需要温度补偿电路<tf>。·MHz.7。由实验结果和由锁相环（PLL）获得的声速经验公式导出的偏差因子，发现PLL型声光在fa = 22.898 MHz时的灵敏度比普通声光提高了2.35倍。

项目成果

IKEDA,Kiyoshi: "Solution-Concentration Sensor Using Ultrasonic Light Diffraction Effect"Proc. of 2002 IEEE PCS., New Orleans. to be printed. (2002)

IKEDA，Kiyoshi：“利用超声波光衍射效应的溶液浓度传感器”Proc。

池田清志: "PD法による超音波溶液濃度測定の温度係数について"平成12年度電子情報通信学会信越支部大会演論文集. 75-76 (2000)

Kiyoshi Ikeda：“关于使用 PD 方法的超声波溶液浓度测量的温度系数”2000 年 IEICE Shin-Etsu 分会会议记录 75-76 (2000)。

Kiyoshi IKEDA: "Ultrasonic Measurement of Sound Velocity in Liquids by a Phase-Locked Loop"Jpn. J. Appl. Phys. 39・5B. 3130-3133 (2000)

Kiyoshi IKEDA：“通过锁相环测量液体中的声速”J. Appl. 39・5B。

IKEDA,Kiyoshi: "SIMPLE SOLUTION-CONCENTRATION SENSOR WITH TEMPERATURE COMPENSATION USING ULTRASONIC WAVES"Proc. of 2001 IEEE PCS.. 474-481 (2001)

池田清：“简单的解决方案 - 使用超声波进行温度补偿的浓度传感器”Proc。

Kiyoshi IKEDA: "SIMPLE SOLUYTION-CONCENTRATION SENSOR WITH TEMPERATURE COMPENSATION USING ULTRASONIC WAVES"Proc.of 2000 IEEE International Frequency Control Symposium. 87-90 (2000)

Kiyoshi IKEDA：“使用超声波进行温度补偿的简单解决方案-浓度传感器”Proc.of 2000 IEEE 国际频率控制研讨会。