摘要:
In order to detect the current state of a system component, e.g. to display whether an electrical conductor, a cable or the like, is currently live, a field generator that generates a magnetic field in the environment of the system part is provided, which generator is connected to an organic magnetoresistive OMR semiconductor element that is arranged stationary in the environment of the system component to be monitored, and a voltage source for generating an electrical voltage between two electrodes of the OMR semiconductor element is provided. The device and the method can be fitted in a simple manner and cost-effectively to almost any system part, even at a later stage to already existing systems. A corresponding display shows the desired information locally limited and in the simplest manner: if the electric conductor is currently energized, an additional evaluation is not necessary.
摘要:
In order to detect the current state of a system component, e.g. to display whether an electrical conductor, a cable or the like, is currently live, a field generator that generates a magnetic field in the environment of the system part is provided, which generator is connected to an organic magnetoresistive OMR semiconductor element that is arranged stationary in the environment of the system component to be monitored, and a voltage source for generating an electrical voltage between two electrodes of the OMR semiconductor element is provided. The device and the method can be fitted in a simple manner and cost-effectively to almost any system part, even at a later stage to already existing systems. A corresponding display shows the desired information locally limited and in the simplest manner: if the electric conductor is currently energized, an additional evaluation is not necessary.
摘要:
Torque transmitted via a drive shaft of a motor is contactlessly determined using organic magnetoresistive semiconductor element, unlike known torque sensors that can generate greatly fluctuating measurement signals even at a constant torque. The organic magnetoresistive semiconductor element is mounted on a drive shaft or a coupling thereof. For this purpose, a field generator is provided, which is rigidly connected to the drive shaft or the clutch and which in the environment of the drive shaft generates a magnetic field that is dependent upon the torque. In the environment, the OMR semiconductor element is arranged to be stationary. The OMR semiconductor element has two electrodes between which a voltage source generates an electrical voltage.
摘要:
A force transducer, in particular a load cell, includes a spring body that deforms when loaded with a force or load to be measured. Two support parts, which are separated by a gap, are moved out of a position of rest. A capacitive displacement detector is used to detect the relative movement of the support parts, where the capacitor includes two electrode combs that are each held on one of the support parts and includes a multiplicity of electrode fingers. The electrode combs are configured designed and mounted on the two support parts such that the electrode fingers of the one electrode comb pass into the finger interspaces of the other electrode comb when the spring body is loaded so that the force transducer is resistant to overloading.
摘要:
A method for early detection of developing damage in a bearing caused by flow of a bearing current includes evaluating a long-term measurement of a measured variable representative of a bearing current amplitude of a bearing current during a bearing operation, representing—based on the evaluation—measurement results in form of a histogram which displays a number of bearing currents per time interval in each interval of the bearing current amplitude, and evaluating the histogram representation of the measurement results through pattern comparison. A device for carrying out the method is also disclosed.
摘要:
The invention relates to a method for controlling a technical apparatus in which a time profile (E(t)) for a power requirement (E) for the technical apparatus is ascertained over at least one period and an operating state of the technical apparatus is matched to the ascertained power requirement (E) on the basis of time.
摘要:
The grounding quality of an electric machine should be better monitored. Therefore, an electric machine is proposed, comprising a stator (1), a rotor (2), a shaft (3), to which the rotor (2) is fastened, and a grounding device (5) for grounding the shaft. The electric machine also has a measuring device (6) for measuring a ground current of the grounding device (5) and for providing a corresponding measured value. The electric machine also has a monitoring device (7) for monitoring the grounding function of the grounding device (5) on the basis of the measured value. In this way, the state of a grounding brush in regard to soiling and wear, for example, can be continuously monitored.
摘要:
A portable personalized tracker card is provided. The tracker card may be a patient tracker card. The tracker card includes a control unit, a memory for storing personal data, an energy supply unit and an electrochromic display for displaying the personal data.
摘要:
A method for early detection of developing damage in a bearing caused by flow of a bearing current includes evaluating a long-term measurement of a measured variable representative of a bearing current amplitude of a bearing current during a bearing operation, representing—based on the evaluation—measurement results in form of a histogram which displays a number of bearing currents per time interval in each interval of the bearing current amplitude, and evaluating the histogram representation of the measurement results through pattern comparison. A device for carrying out the method is also disclosed.
摘要:
In order to enable simple, low-cost monitoring of a motor, a switch box cover for the motor, a condition monitoring system has a sensor unit for detecting a measured variable of the motor, a communication device, which is designed to provide a characteristic value that characterizes the measured variable to a reading device, and a supply unit for supplying the sensor unit with energy.