低能量激光二极管的光场分析及测试
发布时间：2018-10-25 18:16
【摘要】：低能量激光在医学上是的解释是直接照射生物组织不会导致不可逆损伤的激光。在小型便携的医学治疗仪器中,常采用体积较小、价格便宜的低能量激光二极管作为光源。本文分析了由于激光二极管照射人体组织时存在光场,而使局部组织产生的生物效应,通过组织对激光的吸收定律,生物体在激光照射过程中储存的热量和由辐射、传导、对流引起的生物组织的热传递等因素,建立了生物传热方程。在理论上对人体穴位组织在激光辐照下的温度随时间的变化进行了计算,并在理论温升模型和传统灸疗手法各项参数的确立的基础上,建立了激光灸疗模型。以所建立的激光灸疗模型作为理论指导,设计了硬件系统和软件系统,通过对激光二极管光功率的控制,实现若干传统灸疗手法。实验中,以灸疗中穴位皮肤处的温度作为衡量激光灸疗效果的特征参数,采用基于红外测温原理的非接触式测温方法,分别对艾条燃烧过程中穴位处皮肤温度和激光照射下穴位处皮肤温度进行对比分析,实验数据显示,所设计的激光灸疗系统能够模拟三种传统的灸疗手法。本文首先进行了低能量激光的光场分析,然后对低能量激光在医学中的应用实例进行了设计,最后完成了在激光光场中的测试,所设计的激光灸疗仪光学剂量安全可靠,方便实用,适合推广到家庭保健中。
[Abstract]:The medical explanation for low-energy lasers is that direct exposure to biological tissue does not cause irreversible damage. In small portable medical therapeutic instruments, small and inexpensive low energy laser diodes are often used as light sources. In this paper, we analyze the biological effect of local tissue caused by laser diode irradiation on human tissue. Through the law of absorption of laser by tissue, the heat stored in the process of laser irradiation and the conduction by radiation and conduction are analyzed. The heat transfer equation of biological tissue caused by convection was established. The temperature variation of human acupoint tissue under laser irradiation with time was calculated theoretically, and the laser moxibustion model was established on the basis of the theoretical temperature rise model and the establishment of parameters of traditional moxibustion technique. Under the guidance of the established laser moxibustion model, the hardware and software systems are designed. Some traditional moxibustion techniques are realized by controlling the laser diode light power. In the experiment, the temperature of the skin at the acupoint was taken as the characteristic parameter to evaluate the effect of laser moxibustion, and the non-contact temperature measurement method based on the principle of infrared temperature measurement was used. The skin temperature at the acupoint during the burning of moxa was compared with that at the acupoint under laser irradiation. The experimental data showed that the designed laser moxibustion system could simulate three kinds of traditional moxibustion techniques. In this paper, the light field of low energy laser is analyzed firstly, then the application of low energy laser in medicine is designed. Finally, the test of laser light field is completed. The designed laser moxibustion instrument is safe and reliable in optical dose. Convenient and practical, suitable for family health care.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN31
本文编号：2294444
[Abstract]:The medical explanation for low-energy lasers is that direct exposure to biological tissue does not cause irreversible damage. In small portable medical therapeutic instruments, small and inexpensive low energy laser diodes are often used as light sources. In this paper, we analyze the biological effect of local tissue caused by laser diode irradiation on human tissue. Through the law of absorption of laser by tissue, the heat stored in the process of laser irradiation and the conduction by radiation and conduction are analyzed. The heat transfer equation of biological tissue caused by convection was established. The temperature variation of human acupoint tissue under laser irradiation with time was calculated theoretically, and the laser moxibustion model was established on the basis of the theoretical temperature rise model and the establishment of parameters of traditional moxibustion technique. Under the guidance of the established laser moxibustion model, the hardware and software systems are designed. Some traditional moxibustion techniques are realized by controlling the laser diode light power. In the experiment, the temperature of the skin at the acupoint was taken as the characteristic parameter to evaluate the effect of laser moxibustion, and the non-contact temperature measurement method based on the principle of infrared temperature measurement was used. The skin temperature at the acupoint during the burning of moxa was compared with that at the acupoint under laser irradiation. The experimental data showed that the designed laser moxibustion system could simulate three kinds of traditional moxibustion techniques. In this paper, the light field of low energy laser is analyzed firstly, then the application of low energy laser in medicine is designed. Finally, the test of laser light field is completed. The designed laser moxibustion instrument is safe and reliable in optical dose. Convenient and practical, suitable for family health care.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN31
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，本文编号：2294444
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