Rotational speed sensor专利检索-掩蔽信号信号信号处理专利检索查询-专利查询网

Rotational speed sensor

阅读：955发布：2022-08-04

专利汇可以提供Rotational speed sensor专利检索，专利查询，专利分析的服务。并且A rotational speed sensor for producing a d.c. level output signal proportional to shaft speed is disclosed having a light responsive unit (phototransistor) which is masked from a light source by a pair of slotted discs. One disc defines windows and revolves directly with the shaft and the other defines shades for the windows and is mounted to be rotated by a centrifugal force mechanism mounted to revolve directly with the shaft. By means of a cam surface and groove, the second disc is caused to move relative to the first disc to unshade the window progressively as rotational speed increases. The light responsive unit is preferably of the self-integrating (long time constant) type to time average its output and produce the d.c. signal directly.，下面是Rotational speed sensor专利的具体信息内容。

权利要求

1. A rotational speed sensor for producing a signal representative of the rotational speed of a shaft mounted for rotation comprising: a first mask member coupled to rotate with the shaft at a rotational speed which is a function of the rotational speed of the shaft said first member defining at least one window; a second mask member coupled to rotate with the shaft at a rotational speed which is a function of the rotational speed of the shaft, said second member defining means for shading at least said one window of said first member; said first member and said second member being mounted to allow movement relative to each other; a light source; a light responsive unit for producing an electrical signal in response to the quantity of light incident thereon; said source and said unit being operatively associated with said masks to produce an electrical signal from said unit that varies as a function of the relative positions of said masks; and means for moving said members relative to each other in response to the rotation of said shaft, said means for moving including a mass mounted for rotation with the shaft and a spring for mechanically biasing said mass toward its center of rotation.

2. The invention as defined in claim 1, wherein: said first member is affixed to the shaft; said second member is mounted on the shaft for movement relative thereto; said means for moving moves said second member relative to the shaft and the first member in response to the outward movement of said mass, and includes a cam member as part of the spring and a cam slot defined in said second member in which said cam member may move.

3. A speed sensor for sensing the speed of a rotatable shaft comprising: a plurality of members coupled to the shaft so as to rotate with the shaft at a speed which is a function of the shaft rotational speed, said members being mounted so as to allow their angular position relative to each other to change; signal producing means coupled to said members for producing an output signal which signal varies as a funCtion of the relative angular position of said members; and centrifugal force means including a mass mounted to orbit about an axis at a speed which is a function of the rotation speed of the shaft and to be radially displaced from the axis as a function of said orbit speed, said centrifugal force means being coupled to said members to change the relative angular position of said members in response to the radial displacement of said orbiting mass of said centrifugal force means.

说明书全文

相关专利内容

标题	发布/更新时间	阅读量
基于非共面H型谐振器和蟹腿型支撑梁的双轴体微机械谐振式加速度计	2020-05-08	40
脑电的阈下姓名身份认证方法	2020-05-11	882
开关转换器及其控制电路、使用它的照明装置、电子设备	2020-05-12	125
机芯、电子钟表以及电机驱动控制方法	2020-05-12	975
用频谱域智能间隙填充编码或解码音频信号的设备及方法	2020-05-13	503
半导体器件	2020-05-11	192
包括操作为多个通道的多个裸片的半导体装置	2020-05-13	381
用于由功能硬件组件产生的噪音的控制系统	2020-05-12	229
处理系统、集成电路和微控制器	2020-05-12	344
一种多人语音的分离方法和装置	2020-05-12	12

高效检索全球专利

专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。

我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。

申请试用

分析报告

专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。

申请试用

掩蔽信号热门专利

热门分类

Rotational speed sensor

该功能需要专业版企业版VIP权限，您可以：