8results about "Weighing apparatus using electromagnetic balancing" patented technology

The utility model belongs to fire fighting equipment storage equipment technical field especially is a kind of fire rescue breathing apparatus gas cylinder storage device, including vertical support, control panel, hepa air exchange tank, control panel is set in vertical support side end, hepa air exchange tank is set in the other side of vertical support. The utility model is stored by setting gas cylinder storage bin, gyro wheel guide rail, positioning magnetic attraction piece, sliding storage frame, self-adapting limiting frame, piezoelectric weighing sensor and humidity sensor, when gas cylinder needs to be stored, operator inserts gas cylinder into gas cylinder storage bin inside, gas cylinder inserts inside sliding storage frame, and according to the size of gas cylinder extrudes the self-adapting limiting frame of both sides, and self-adapting limiting frame is opened by the connection of spring column, and is close to gas cylinder outside. Piezoelectric weighing sensor, humidity sensor, voc sensor monitor the weight, storage environment humidity and volatile organic compound concentration of gas cylinder respectively, and are uploaded to control panel in real time.

The application discloses an electromagnetic coupling sensing device, a signal measuring method and an electronic device. A frequency generating module is configured to generate a set frequency signal; a first resonance module is configured to generate a primary resonance signal based on the set frequency signal; a second resonance module is configured to be connected with the first resonance module through a coupling capacitor to generate a secondary resonance signal based on the primary resonance signal; wherein the second resonance module comprises a coil arranged in a Z direction, a ferrite arranged in the coil, and the height of the coil is higher than the ferrite; the coil can bear a weight to be measured to generate a deformation to change the frequency of the secondary resonance signal; and a echo acquisition and processing module is configured to be connected with the second resonance module to acquire the secondary resonance signal and output a voltage signal changed according to the secondary resonance signal.

We provide an electronic balance that enables high-resolution measurements. [Solution] The electronic balance 100 comprises a weighing pan 5 on which an object to be weighed is placed, a load sensor 10 for detecting the load, a control calculation unit 60 for calculating the mass of the object to be weighed from the load detection signal of the load sensor 10, and first and second A / D converters 42, 44. The first and second A / D converters 42, 44 are switchable, and the second A / D converter 44 has a mass corresponding to the least significant bit that is smaller than that of the first A / D converter 42. The load sensor 10 is mechanically balanced when a load from a first mass, which is within the input range of the first A / D converter 42, is applied to it, and the second A / D converter 44 is configured to weigh the object to be weighed using the second A / D converter 44, with the state in which a load from a second mass M2, which is set based on the input range of the first mass and the second A / D converter 44, is applied to the load sensor 10 as a reference value.

The present invention relates to the technical field of magnetic suspension measurement, and specifically provides a magnetic suspension balance and a control method thereof, aimed at solving the problems of existing magnetic suspension balances in which the assembly structure of the coil and the stator permanent magnet is complex, disassembly and assembly are difficult, and due to the large space occupied, the diameter of the reaction chamber of the magnetic suspension balance is large, resulting in a decrease in the high-pressure resistance rating. The magnetic suspension balance of the present invention comprises a sample chamber and a magnetic suspension weighing module, wherein the magnetic suspension weighing module comprises an analytical balance, a first magnetic force device, a second magnetic force device, and a weighing component, the first magnetic force device is connected to the analytical balance, the second magnetic force device is connected to the weighing component, and the weighing component is connected to a sample; and a stabilization module, wherein the stabilization module comprises a third magnetic force device disposed outside the sample chamber and a fourth magnetic force device disposed inside the sample chamber, and the fourth magnetic force device is connected to the second magnetic force device and is capable of, under the magnetic force of the third magnetic force device, driving the second magnetic force device to eliminate displacement, cease rotation, and maintain stability.

An apparatus (20-A; 20-B; 120-A; 220-A; 320-A; 420-A; 520-A; 620-A; 720-B; 820-B) for moving and weighing an object (21) or material in general, comprising an electric motor (26) which is used in two different ways, respectively to move the object (21) or to weigh it, wherein, during a weighing phase, a drive shaft ( 27) of the electric motor (26) stably supports the object (21) in a weighing position (P1), so as to be subjected to a torque (C) proportional to the weight (P) of the object, while at the same time is held substantially still in a fixed measuring position (o), corresponding to the weighing position (P1) of the object (21), so as to activate an electric holding current (I), fed to the electric motor (26), which is detected by a control unit (28) to obtain from its value the measurement of the weight (P) of the object (21), and wherein, before and / or after the weighing phase, the electric motor (26 ) controls, through a rotation of the respective drive shaft (27), proper movement means (22) which in turn move the object (21) towards and / or from the weighing area (25), where it is weighed. Selective connection means (31), for example suitable to be activated in response to the direction of rotation of the drive shaft (27) of the electric motor (26), can be provided to selectively connect the drive shaft (27) with the movement means (22 ) used to move the object (21) with respect to the weighing area (25) or with the means (23) used to support it in the same weighing area (25). The apparatus (20-A; 20-B) allows the functions of weighing and moving an object to be carried out with a simple, inexpensive structure composed of a limited number of parts, as well as suitable for integration in a very wide range of applications. For example, the apparatus (20-A; 20-B) can be advantageously implemented and integrated into a continuous handling line (50-A; 50-B), for the packaging and / or in general the treatment of a plurality of objects (21; 21-1; 21-2;...21-N) and / or of the same or similar loads, within which the objects handled and moved must be individually weighed one after the other, so as to avoid the use of expensive and often cumbersome stations dedicated to weighing along the continuous handling line.