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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：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：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：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：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：US4450924A
公开(公告)日：1984-05-29
申请号：US450784
申请日：1982-12-17
申请人： Lothar Behrend , Eric Knothe , Franz-Josef Melcher , Jurgen Ober
发明人： Lothar Behrend , Eric Knothe , Franz-Josef Melcher , Jurgen Ober
CPC分类号： G01G21/244 , 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 a coil and a 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 regulate the amplitude of this alternating current, the invention proposes a simplified circuit which comprises a highly temperature-dependent resistor, the resistance value of which is set at a fixed theoretical 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，通过发送额外的交流电流通过线圈和精密电阻可以补偿线圈和精密电阻器中的负载依赖性的发展， 在其幅度上互补调节。 为了调节该交流电流的振幅，本发明提出了一种简化的电路，其包括一个高度依赖于电阻的电阻，其电阻值被设置在固定的理论值。
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公开(公告)号：US4281731A
公开(公告)日：1981-08-04
申请号：US148013
申请日：1980-05-08
申请人： Walter Sodler , Dieter Blawert , Jurgen Ober
发明人： Walter Sodler , Dieter Blawert , Jurgen Ober
CPC分类号： G01G7/04 , G01G21/244 , Y10S177/11
摘要： An electromagnetic force-compensating weigher with a load supporting device resiliently supported by resilient joints and movable between stops, wherein electric circuitry is connected to produce a slowly decaying mechanical oscillation upon the load supporting device, to thereby reduce the spring hysteresis of the resilient joints.
摘要翻译： 具有负载支撑装置的电磁力补偿称重器，其由弹性接头弹性地支撑并在止动件之间移动，其中电路连接以在负载支撑装置上产生缓慢衰减的机械振荡，从而减小弹性接头的弹簧滞后。
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