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一种消除震动对增量式光学编码器测量影响的方法

Method for eliminating influence of vibration over measurement of incremental optical encoder

本发明旨在提供一种消除震动对增量式光学编码器测量影响的方法，以解决现有技术中增量式光学编码器抗震能力差的技术问题。该方法是在现有增量式光学编码器的基础上，将光学编码器的光电读头数量增加为四个，并将四个光电读头沿指示圆光栅盘圆周均匀安置，使各读头相对于圆心成９０度分布。通过四个读头和ＡＤ转换电路及检相算法将四读头位置处的叠栅条纹相位解算出来，再以该四个特定位置的相位信息为基础，计算出标尺圆光栅盘震动方向和震动幅度，从而求出该震动产生的误差项并反代入光学编码器转动引起的叠栅条纹相位变化表达式，消除震动的影响。本发明极大地降低了震动时光学编码器的检相误差，提高了存在震动时光学编码器的测量精度。

The invention aims to provide a method for eliminating the influence of vibration over the measurement of an incremental optical encoder, so as to solve the technical problem of poor anti-vibration ability of the incremental optical encoder in the prior art. The method is characterized in that on the basis of the existing incremental optical encoder, the number of photoelectric read heads of the optical encoder is increased to four; the four photoelectric read heads are evenly settled along the circumference of an indicating circular grating disc; and each read head is distributed at an angle of 90 DEG relative to a circle center. Stacked grating fringe phases in the positions of the four read heads are solved through the four read heads, an analog-digital (AD) conversion circuit and a phase detection algorithm; then the vibration direction and the vibration amplitude of a scale circular grating disc are calculated on the basis of the phase information of the four specific positions, so as to determine error terms produced during the vibration; and the vibration direction and the vibration amplitude are inversely substituted into an expression of stacked grating fringe phase changes caused by the rotation of the optical encoder, so as to eliminate the influence of the vibration. By adopting the method, phase detection errors of the optical encoder are greatly reduced during the vibration, and the measurement accuracy of the optical encoder is improved when the vibration exists.

流感疫苗中的过敏原卵类粘蛋白或卵运铁蛋白定量检测

Method for detecting allergen ovomucoid or ovotransferrin in influenza vaccine quantificationally

本发明公开了一种流感疫苗中的过敏原卵类粘蛋白或卵运铁蛋白定量检测方法，在制备抗卵类粘蛋白或抗卵运铁蛋白单克隆抗体的基础上，经过配对抗体的筛选，建立的双抗体夹心酶联免疫吸附试验，来定量检测流感疫苗中卵类粘蛋白和卵运铁蛋白。为了减少由鸡胚尿囊腔内纯化制备的流感疫苗中残留卵类粘蛋白或卵运铁蛋白引起的接种人群中过敏反应的发生率，该方法特异性强、灵敏度高、重复性好、简便易行，非常适合疾病控制中快速定量检测流感疫苗或食品中卵类粘蛋白和卵运铁蛋白。

The invention discloses a method for detecting allergen ovomucoid or ovotransferrin in influenza vaccine quantificationally. Based on the preparation of anti-ovomucoid or anti-ovotransferrin monoclonal antibody, after paired antibodies are screened, a double antibody sandwich ELIsA (enzyme linked immunosorbent assay) adsorption test is established to quantificationally detect allergen ovomucoid or ovotransferrin in influenza vaccine. The method aims to reduce the incidence rate of allergic reaction of inoculated people caused by ovomucoid or ovotransferrin remaining in influenza vaccine prepared in a chick embryo allantoic cavity in a purified manner, has the advantages of strong specificity, high sensitivity, good repeatability and simplicity and convenience in implementation, and is very suitable for quickly and quantificationally detecting ovomucoid and ovotransferrin in food or influenza vaccine in disease control.

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一种悬挑型钢钢梁可拆锚固装置

Detachable anchor device for cantilever section steel beam

本发明公开了一种悬挑型钢钢梁可拆锚固装置，包括设于混凝土板底面上的底板和将悬挑型钢钢梁固定于混凝土板顶面上的压板，底板上铺设塑料薄膜与混凝土板隔离，底板四角分别垂直固定一螺杆，螺杆穿过混凝土板且螺杆外套有套管与混凝土板隔离，压板四角套接于螺杆上，螺母旋合于螺杆上并向下压紧压板。本发明的锚固装置可拆卸，可周转使用，无浪费，且安全性能高，保障了外架的使用安全性。

The invention discloses a detachable anchor device for a cantilever section steel beam, which comprises a bottom plate arranged on the bottom surface of a concrete plate and a pressure plate for fixing the cantilever section steel beam on the top surface of the concrete plate. A plastic thin film is paved on the bottom plate and is isolated from the concrete plate; four screws are respectively and vertically fixed on four corners of the bottom plate; the screws pass through the concrete plate and sleeves are sleeved outside the screws to separate the screws from the concrete plate; the four corners of the pressure plate are sleeved on the screws; and nuts are screwed on the screws; and the pressure plate is pressed down by the nuts. The anchor device disclosed by the invention is detachable, can be turned around for use, has no waste and has high safety performance; and the using safety of an outer frame is ensured.

一种摩阻式旋挖钻机的钻杆变径接头

Drill rod reducing joint of friction-type rotary drilling rig

本发明涉及一种摩阻式旋挖钻机的钻杆变径接头，包括管体，管体的一头设置有用于与钻机驱动头连接的固定法兰，管体外壁设置有与驱动头内壁的键槽相配合的键条，管体的另一端为开口，管体内壁上设置有钻杆外壁的键条相配合的键槽，在管体内壁的键槽的尽头设置有挡住键槽尽头的挡圈。本发明具有的有益效果：加快了钻机的施工效率，减缓了钢丝绳的磨损，提高了设备零部件的寿命，大量的节约了燃油，保护环境。同时还节约了用户大量的资金、维修成本和保养成本。

The invention relates to a drill rod reducing joint of a friction-type rotary drilling rig, which comprises a tube body. One end of the tube body is provided with a fixed flange for being connected with a driving head of the drilling rig; the outer wall of the tube body is provided with key strips matched with a key slot on the inner wall of the driving head; the other end of the tube body is open; the key slot matched with the key strips on the outer wall of a drill rod is arranged on the inner wall of the tube body; and a check ring for stopping the tail end of the key slot is arranged at the tail end of the key slot on the inner wall of the tube body. The drill rod reducing joint has the benefits of quickening the construction efficiency of the drilling rig, retarding the wear of a steel wire rope, prolonging the service life of parts of equipment, greatly saving fuel and protecting the environment. Meanwhile, a great amount of funds, maintenance cost and upkeep cost are also saved for a user.

一种自动增益控制环路的峰值统计方法

Peak counting method of automatic gain control loop

本发明公开了一种自动增益控制环路的峰值统计方法，包括：步骤１、根据声音正弦信号的概率密度函数，确定声音正弦信号位于一定信号幅度范围内的概率公式；步骤２、根据最佳信号幅度值范围，确定声音信号位于该幅度范围的准确概率值；步骤３、根据声音信号特性和准确概率值，确定对信号峰值进行有效判决所需要采样的信号点数；步骤４、最终根据最小信号点数的数字统计性特性，做出数字逻辑判决，反馈给自动增益控制环路中的可变增益放大器。本发明可应用于数模混合结构的助听器自动增益控制环路中，简化了控制逻辑算法，降低了数字模块的硬件开销，实现了对自动增益控制环路增益准确、有效的控制。

The invention discloses a peak counting method of an automatic gain control loop. The method comprises the following steps: step 1, according to the probability density function of a sound sine signal, determining a probability formula of the sound sine signal positioned in a certain signal amplitude range; step 2, according to a best signal amplitude value range, determining the accurate probability value of the sound signal positioned in the amplitude range; step 3, according to the characteristics of the accurate probability value of the signal, determining signal points needing to be sampled in the effective judgment to a signal peak; and step 4, finally according to the digital counting characteristics of the minimum signal points, making a digital logic judgment to be feed back to a variable gain amplifier in the automatic gain control loop【语法错误】. The method can be applied to the automatic gain control loop of a hearing aid with a digital-analog hybrid structure, a control logic algorithm is simplified, the hardware cost of digital modules is reduced, and gain of the automatic gain control loop can be accurately and effectively controlled.

102650130A

设有增强塑料棒材箍筋的桩体骨架笼

Pile body framework cage with reinforced plastic rod stirrup

本发明公开了一种设有增强塑料棒材箍筋的桩体骨架笼，包括桩体，桩体的骨架笼，所述桩体骨架笼的纵向分布筋和箍筋分别为后张预应力增强塑料棒材或管材。其中作为分布筋棒材或管材下端固联有限位装置，上端设有连接件，在连接件与限位装置之间的所述棒材或管材的上部设有套管，下部与桩体粘结。本发明用增强塑料棒材或管材替代金属材料制作抗拔桩，同时对其作后张预应力处理，既能保持桩体的整体性能，又能降低抗拔桩的制作成本、降低工程造价。由于增强塑料棒材属于脆性材料，抗折断能力较弱，因此方便了拆除施工。

The invention discloses a pile body framework cage with a reinforced plastic rod stirrup. The pile body framework cage comprises a pile body and a framework cage of the pile body, wherein a longitudinal distribution bar and a stirrup in the framework cage of the pile body are respectively reinforced plastic rods or pipes subjected to post-tensioned prestressing treatment; a limiting device is fixedly connected with the lower end of the rod or the pipe as the distribution bar; a connecting piece is arranged at the upper end of the rod or the pipe as the distribution bar; a sleeve pipe is arranged at the upper part of the rod or the pipe between the connecting piece and the limiting device; and the lower part of the rod or the pipe between the connecting piece and the limiting device is bonded with the pile body. According to the pile body framework cage with the reinforced plastic rod stirrup, the reinforced plastic rods or pipes instead of metal materials are used for manufacturing an uplift pile and are subjected to the post-tensioned prestressing treatment at the same time, so that the integral performance of the pile body can be kept and the manufacturing cost and the construction cost of the uplift pile can be reduced. As the reinforced plastic rods belong to brittle materials, and the breaking resistance is poor, convenience is brought to demolition.

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