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1.发明授权
公开(公告)号：US4401176A
公开(公告)日：1983-08-30
申请号：US347626
申请日：1982-02-10
CPC分类号： G01G21/23
摘要： Electronic weigher apparatus is disclosed which utilizes a plate situated below the weighing scale and above a load receiver which is part of an electronic weight measuring system. The plate is shaped in such a way that thermal air currents generated by the electronic apparatus are carried through a low air resistance path from the interior to the exterior of the weigher casing while a high resistance airflow path prevents air currents from being carried upward from the electronic apparatus to the weighing scale. A collar encircling the scale prevents external air currents from disturbing it during the loading operation.
摘要翻译： 公开了一种使用位于称重秤下方的板和作为电子重量测量系统的一部分的负载接收器上方的电子称重仪。 该板被成形为使得由电子设备产生的热空气流通过从称重器壳体的内部到外部的低空气阻力路径运送，而高阻力气流路径防止气流从 电子仪器到称重秤。 环绕标尺的衣领可防止外部气流在装载作业过程中产生干扰。
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公开(公告)号：US4798250A
公开(公告)日：1989-01-17
申请号：US132187
申请日：1987-12-14
申请人： Erich Knothe , Franz-Josef Melcher , Gunther Maaz , Klaus Dardat , Walter Sodler
发明人： Erich Knothe , Franz-Josef Melcher , Gunther Maaz , Klaus Dardat , Walter Sodler
CPC分类号： G01G21/286 , G01G21/30
摘要： A wind guard for a balance is suggested which consists of at least two cylindrically curved wall elements, in which each wall element is connected to a corresponding segment of the circular covering surface. In this manner, the balance scale is readily accessible both from the side and also from above when the wind guard is open.
摘要翻译： 建议用于平衡的防风罩，其由至少两个圆柱形弯曲的壁元件组成，其中每个壁元件连接到圆形覆盖表面的对应段。 以这种方式，当防风罩打开时，平衡秤从侧面也可以容易地接近。
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公开(公告)号：US4300647A
公开(公告)日：1981-11-17
申请号：US171292
申请日：1980-07-23
申请人： Erich Knothe , Franz-Josef Melcher , Jurgen Ober , Lothar Behrend
发明人： Erich Knothe , Franz-Josef Melcher , Jurgen Ober , Lothar Behrend
IPC分类号： G01G7/04 , G01G19/414 , G01G23/48 , G01G7/00 , G01G3/14
CPC分类号： G01G7/04 , G01G19/414
摘要： A scale of the electromagnetic force compensation principle, having a stationary permanent magnet system with an air gap and at least one coil positioned in the air gap, the coil being acted upon via a position sensor and a variable-gain amplifier by a compensation direct current dependent on the load of the scale, wherein the compensation direct current flows through a measuring resistor from both ends of which a signal dependent on the load of the scale is tapped off and fed to an analog/digital converter, and further electric circuits are connected therewith which permit an alternating current to flow, in addition to the compensation direct current, through the coil and the measuring resistor and including a regulating or adjusting device which modifies the amplitude of the additional alternating current in such a manner that the joulean heat generated in the coil and in the measuring resistor by the compensation direct current and by the additional alternating current is at least approximately load-independent.
摘要翻译： 一种电磁力补偿原理的尺度，具有具有气隙的固定永磁体系统和位于气隙中的至少一个线圈，线圈通过位置传感器和可变增益放大器通过补偿直流电作用 取决于刻度的负载，其中补偿直流从两端流过测量电阻器，其中取决于刻度的负载的信号被分接并馈送到模拟/数字转换器，并且还连接电路 由此允许交流电流除了补偿直流电流之外通过线圈和测量电阻器流动，并且包括调节或调节装置，其以这样的方式修改附加交流电流的振幅，使得在 线圈和测量电阻中的补偿直流电流和额外的交流电至少为一个 大约负载无关。
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公开(公告)号：US4632199A
公开(公告)日：1986-12-30
申请号：US721439
申请日：1985-04-09
申请人： Jurgen Ober , Franz-Josef Melcher , Erich Knothe
发明人： Jurgen Ober , Franz-Josef Melcher , Erich Knothe
摘要： In an electronic balance for application in potentially explosive areas, the weighing system, the electronic evaluation unit and the digital display unit have an intrinsically safe design with regard to the possibility of explosions. All lead connections are supplied with low voltages and the power unit when present is located outside the electronic balance and connected to the electronic balance via an explosion-safe lead and plug connections with an intrinsically safe design with regard to an explosion. In an alternative the power unit can be encapsulated in a pressure-proof manner, powder-filled, force-ventilated or located outside the potentially combustible gaseous explosive area. It is also contemplated that a battery which is intrinsically safe with regard to explosions can also be used in the housing of the electronic balance instead of a separate power unit.
摘要翻译： 在用于潜在爆炸区域的电子天平中，称重系统，电子评估单元和数字显示单元在爆炸的可能性方面具有本质安全的设计。 所有引线连接都提供低电压，并且当存在时的电源单元位于电子天平外部，并通过爆炸安全设计的爆炸安全的铅和插头连接连接到电子天平。 在替代方案中，动力单元可以以耐压的方式封装，粉末填充，强制通风或位于潜在可燃气体爆炸区域外部。 还可以设想，关于爆炸本身安全的电池也可以用于电子天平的壳体而不是单独的动力单元。
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公开(公告)号：US4619337A
公开(公告)日：1986-10-28
申请号：US716082
申请日：1985-03-26
申请人： Lothar Behrend , Jurgen Ober , Erich Knothe , Franz-Josef Melcher
发明人： Lothar Behrend , Jurgen Ober , Erich Knothe , Franz-Josef Melcher
摘要： In order to reduce the coupling-in of high-frequency electromagnetic interference into the measuring system of electric balances with scale on top and with a metallic balance scale and a metallic housing, a pin (7) which establishes the connection between the balance scale (2) and the load receiver (5) of the measuring system comprises an insulating layer on its surface which is bridged by a resistor (6) located on the pin (7).
摘要翻译： 为了将高频电磁干扰的耦合减小到电平衡的测量系统中，其具有在顶部和金属平衡秤和金属外壳上的刻度，销钉（7）建立平衡秤（ 2）和测量系统的负载接收器（5）包括在其表面上由位于引脚（7）上的电阻器（6）桥接的绝缘层。
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公开(公告)号：US4656599A
公开(公告)日：1987-04-07
申请号：US664966
申请日：1984-10-26
申请人： Erich Knothe , Franz-Josef Melcher , Jurgen Ober , Christoph Berg , Klaus Dardat , Eduard Bierich , Gunther Maaz
发明人： Erich Knothe , Franz-Josef Melcher , Jurgen Ober , Christoph Berg , Klaus Dardat , Eduard Bierich , Gunther Maaz
CPC分类号： G01G23/3707 , G01G23/48 , G01G7/02
摘要： It is necessary, when high requirements are demanded from balances, that the effect of different disturbance variables such as, e.g., temperature and/or moisture on the measuring system be corrected. To this end, temperature and moisture sensors are used from whose output signal correction values are calculated. The invention suggests that a storage area be provided into which the instantaneous measured results of these sensors are stored in succession, where they remain stored for a set time. This data stemming from different times, evaluated with set weighting factors, could then be used to calculate the corrections. This makes it possible to obtain a good correction of changing disturbances even with a different behavior in time of sensors and measuring system.
摘要翻译： 当需要来自平衡的高要求时，有必要校正不同干扰变量（例如温度和/或水分）对测量系统的影响。 为此，使用从其输出信号校正值计算出的温度和湿度传感器。 本发明提出一种存储区域，其中这些传感器的瞬时测量结果被连续存储在该存储区域中，在那里它们保持存储一段设定的时间。 然后可以使用由不同时间产生的数据，用设定的加权因子进行评估，以计算校正值。 这使得即使在传感器和测量系统的时间上具有不同的行为，也可以获得改变的干扰的良好校正。
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公开(公告)号：US4450923A
公开(公告)日：1984-05-29
申请号：US450676
申请日：1982-12-17
申请人： Lothar Behrend , Erich Knothe , Franz-Josef Melcher , Jurgen Ober
发明人： Lothar Behrend , Erich Knothe , Franz-Josef Melcher , Jurgen Ober
CPC分类号： G01G7/04
摘要： It is known in high-resolution electronic weighing scales based on the principle of electromagnetic force compensation that the load-dependent development of heat in the coil and the precision resistor can be compensated by sending an additional alternating current through the coil and the precision resistor which is complementarily regulated in its amplitude. In order to make possible a precise regulation of the amplitude of the additional alternating current even in the case of a small carrying force of the electromagnetic force compensation and of a correspondingly small direct compensating current, the invention proposes connecting in a voltage divider in parallel to the coil and the precision resistor which has a highly temperature-dependent resistor. In this parallel branch direct and alternating current are higher by a constant proportionality factor than in the main branch formed by coil and precision resistor. The parallel branch is also part of a resistance measuring bridge which regulates the amplitude of the additional alternating current in such a manner that the highly temperature-dependent resistor retains its theoretical excess temperature and therewith its theoretical resistance value.
摘要翻译： 在电磁力补偿原理的高分辨率电子称重秤中已知，线圈和精密电阻器的负载依赖性的发展可以通过发送额外的交流电流通过线圈和精密电阻来补偿， 在其幅度上互补调节。 为了使得即使在电磁力补偿的小承载力和相应较小的直接补偿电流的情况下，也可以精确地调整附加交流电流的幅度，本发明提出将分压器与 线圈和具有高度依赖电阻的精密电阻器。 在这种并联支路中，直流和交流电流比由线圈和精密电阻形成的主支路中的常数比例因子高。 并联支路也是电阻测量桥的一部分，该电阻测量桥以这样的方式调节附加交流电流的振幅，使得高度依赖于温度的电阻器保持其理论上的过剩温度及其理论电阻值。
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公开(公告)号：US4964478A
公开(公告)日：1990-10-23
申请号：US448501
申请日：1989-12-11
CPC分类号： G01G21/244 , G01G23/01
摘要： An electronic balance with scale on top and with parallel guide rods whereby corner-load errors can be corrected by means of the inclusion of at least one leaf spring which is fastened to a load receiver and is supported on the other end on a fixed point of the housing. The magnitude of the correction can be adapted to the corner-load error of the unadjusted parallel guide by means of the selection of the spring stiffness of the leaf spring and/or by means of its effective length.
摘要翻译： 一种电子天平，具有在顶部和平行的引导杆上的刻度，由此可以通过包括至少一个固定到负载接收器的板簧来校正角负载误差，并且另一端支撑在固定点 住房。 校正的大小可以通过选择板簧的弹簧刚度和/或通过其有效长度来适应未调节的平行导轨的角负载误差。
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公开(公告)号：US4666007A
公开(公告)日：1987-05-19
申请号：US861397
申请日：1986-05-09
摘要： In a drying balance with scale on top and with a radiation source for heating and drying material to be weighed located on the balance scale, the radiation source (11) is permanently located behind the balance scale (5) and a bent cover (7) which functions as a radiation deflector is movably located over the balance scale (5). This makes the construction lower and a moving of the radiation source (11) with its electric connections is avoided when the balance scale (5) is loaded. Moreover, differently constructed inner surfaces (7') of the cover (17) permit the drying balance to easily adapt to different radiation sources (11) and to different drying tasks.
摘要翻译： 在具有鳞片的干燥平衡上，具有用于加热和干燥位于平衡秤上的材料的辐射源的辐射源，辐射源（11）永久地位于平衡秤（5）后面，并且弯曲盖（7） 作为辐射偏转器的功能可移动地位于平衡秤（5）上方。 这使得结构更低，并且当平衡秤（5）被装载时，避免了辐射源（11）与其电连接的移动。 此外，盖（17）的不同构造的内表面（7'）允许干燥平衡容易地适应于不同的辐射源（11）和不同的干燥任务。
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公开(公告)号：US4420055A
公开(公告)日：1983-12-13
申请号：US297349
申请日：1981-08-28
CPC分类号： G01G7/045
摘要： Apparatus for measuring weight and force has a load reception part arranged for deflection on a fixed part of a weighing and force-measuring system and includes a compensation coil arrangement situated in a constant magnetic field. At least one position sensor ascertains load-dependent deflections of the load reception part from a predetermined position and feeds a sensor signal to an electric regulator circuit. The regulator circuit regulates the current through the compensation coil arrangement so that the load reception part is returned to its predetermined position. The regulator circuit includes means which impart, alternately, positive and negative values, determined by the loading, to the current flowing through the compensation coil arrangement.
摘要翻译： 用于测量重量和力的装置具有负载接收部分，其布置用于在称重和力测量系统的固定部分上偏转，并且包括位于恒定磁场中的补偿线圈装置。 至少一个位置传感器从预定位置确定负载接收部分的负载相关偏转并将传感器信号馈送到电调节器电路。 调节器电路调节通过补偿线圈装置的电流，使得负载接收部分返回到其预定位置。 调节器电路包括交替地将通过负载确定的正值和负值赋予流过补偿线圈装置的电流的装置。
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