摘要:
Die Erfindung betrifft ein Widerstandsnetzwerk (50) für eine Kraftmessvorrichtung (1), insbesondere eine Waage, mit mindestens zwei elektrischen Teilwiderständen (R1, R2, R3, R4), welche abgestufte Widerstandwerte aufweisen, sodass jeweils eine unterschiedliche elektrische Verdrahtung der Teilwiderstände (R1, R2, R3, R4) einen unterschiedlichen Gesamt-Widerstandswert (R) des Widerstandsnetzwerks (50) ergibt. Dabei weist das Widerstandsnetzwerk (50) zur Verdrahtung der Teilwiderstände (R1, R2, R3, R4) ein codierendes Schaltelement (SW) auf, sodass verschiedenen Schaltstellungen (POS) des Schaltelements (SW) verschiedene Verdrahtungen der Teilwiderstände (R1, R2, R3, R4) zuordenbar sind und die Anzahl der Teilwiderstände (R1, R2, R3, R4) geringer ist als die Anzahl der möglichen Schaltstellungen (POS).
摘要:
Disclosed in the present invention is a load cell, comprising four resistive strain gauges, a digital-to-analog conversion circuit and a signal processor. The signal processor can output a real-time load stress value F n and a real-time state information matrix S t . Also proposed in the present invention is a weighing network, comprising a load cell array composed of several aforementioned load cells, a collection device for collecting external information, and a control terminal. Further proposed in the present invention is a monitoring method for a weighing network, applied to the aforementioned weighing network, wherein the control terminal collects real-time external information, and a real-time load stress value F n and a real-time state information matrix S t for each load cell in real time; and compares the real-time external information, and the real-time load stress value F n and the real-time state information matrix S t for each load cell with data stored in a weighing process database to monitor the state of the weighing network.
摘要:
The time and cost which requires the adjustment of a load cell in case of manufacturing the multi-point type weighing equipment using a plurality of load cells are fully reduced. Four strain gauges comprise a Wheatstone bridge circuit for every load cell, and it has composition that these were connected in parallel. When all the load cells are not loaded, in order to make small the variation of the load cell of the output voltage depending on temperature between CD in case of input voltage being applied between AB as much as possible, temperature compensator (182) which is the first resistance for adjustment is provided in the Wheatstone bridge circuit corresponding to load cell (10). Also, when all the load cells are not loaded, in order to make minimum the absolute value of the output voltage between CD in case of input voltage being applied between AB as much as possible, zero balance adjustment resistance (183), which is the second resistance for adjustment, is also provided in this Wheatstone bridge circuit.
摘要:
Eine modulare Kraftmesszelle (2) weist einen Kraftaufnehmer (20) auf, der mit Sensoren (28, 29) versehen ist, mittels derer durch Kraft- und Temperatureinwirkungen verursachte Zustandsänderungen des Kraftaufnehmers (20) messbar sind. Ferner ist ein Speichermodul (245) vorgesehen, in dem der modularen Kraftmesszelle (2) zugehörige Kompensationsdaten speicherbar sind. Ein Schaltungsmodul (24) ist mechanisch und thermisch mit dem Kraftaufnehmer (20) gekoppelt, welches das Speichermodul (245) sowie wenigstens eine Wandlerschaltung (243, 244) aufweist, die zur Wandlung der von den Sensoren (28, 29) abgegebenen analogen Signale dient.
摘要:
Disclosed in the present invention is a load cell, comprising four resistive strain gauges, a digital-to-analog conversion circuit and a signal processor. The signal processor can output a real-time load stress value F n and a real-time state information matrix S t . Also proposed in the present invention is a weighing network, comprising a load cell array composed of several aforementioned load cells, a collection device for collecting external information, and a control terminal. Further proposed in the present invention is a monitoring method for a weighing network, applied to the aforementioned weighing network, wherein the control terminal collects real-time external information, and a real-time load stress value F n and a real-time state information matrix S t for each load cell in real time; and compares the real-time external information, and the real-time load stress value F n and the real-time state information matrix S t for each load cell with data stored in a weighing process database to monitor the state of the weighing network.
摘要:
The time and cost which requires the adjustment of a load cell in case of manufacturing the multi-point type weighing equipment using a plurality of load cells are fully reduced. Four strain gauges comprise a Wheatstone bridge circuit for every load cell, and it has composition that these were connected in parallel. When all the load cells are not loaded, in order to make small the variation of the load cell of the output voltage depending on temperature between CD in case of input voltage being applied between AB as much as possible, temperature compensator (182) which is the first resistance for adjustment is provided in the Wheatstone bridge circuit corresponding to load cell (10). Also, when all the load cells are not loaded, in order to make minimum the absolute value of the output voltage between CD in case of input voltage being applied between AB as much as possible, zero balance adjustment resistance (183), which is the second resistance for adjustment, is also provided in this Wheatstone bridge circuit.