RU95856U1 - DEVICE FOR MEASURING THE POLARIZATION COEFFICIENT OF THE VOLTAGE VECTOR OF THE ELECTRICAL AND MAGNETIC FIELDS OF INDUSTRIAL FREQUENCY - Google Patents

Abstract

 A device for measuring the polarization coefficient of electric and magnetic fields of industrial frequency, containing a measuring module and an interface module, electric and magnetic field sensors, analog signal switches, an amplifier, a fundamental filter, a rectifier, an analog-to-digital converter, and an optical communication line of the modules, characterized in that the measuring module additionally contains three switches of analog signals, on the one hand connected with three capacitive isotropic electric sensors fields located on the surface of the spherical structure along the X, Y, Z axes, and on the other hand with a three-channel amplifier equipped with a gain control, the amplifier outputs are connected to the inputs of the three-channel main harmonic filter, the outputs of which are connected to the inputs to the microcontroller of the measuring module, containing a three-channel measuring transducer, and connected to the switches of analog signals, with a three-channel amplifier, a power source and an optical transceiver located in the new design, the input / output of the microcontroller of the measuring module is connected to the input / output of the optical transceiver, the second input / output of the optical transceiver of the measuring module is connected to the optical transceiver of the interface module by the optical line, the input / output of the optical transceiver of the interface module is connected to the input / output of the microcontroller of the interface module , the outputs of the microcontroller of the interface module are connected to the inputs of the display and the buzzer, the inputs / outputs of the microcontroller of the module and

Description

The utility model can be used to measure the polarization coefficient of the vector of electric and magnetic fields of industrial frequency.

A device is known that contains a measuring module and an interface module, electric and magnetic field sensors, an analog signal switch, a preliminary amplifier-multiplexer, a fundamental harmonic filter, a rectifier, a microprocessor of a measuring module, optical ports, an optical fiber line, and a microprocessor of an interface module. (RU 44832 U1, 03/27/2005, G01R 29/08)

A disadvantage of the known device is the presence of an analog signal rectifier, which does not allow to take into account the polarity of the orthogonal components of the instantaneous values of the electric and magnetic field intensity vector.

The technical result consists in determining the polarity of the orthogonal components of the instantaneous values of the electric and magnetic field intensity vector.

The technical result is achieved by the fact that the measuring module further comprises three analog signal switchers, on the one hand connected with three capacitive isotropic electric field sensors located on the surface of the spherical structure along the X, Y, Z axes, and with three isotropic magnetic field sensors located inside the ball structure along the axes X, Y, Z, and on the other hand with a three-channel amplifier equipped with a gain control, the outputs of the three-channel amplifier are connected to the inputs to the three-channel filter of the fundamental harmonic, the outputs of which are connected to the inputs of the microcontroller of the measuring module, containing a three-channel measuring transducer, and connected to the switches of analog signals, with a three-channel amplifier, a power source and an optical transceiver located in a spherical design, the input / output of the microcontroller of the measuring module connected to the input / output of the optical transceiver, the second input / output of the optical transceiver of the measuring module with dynamin with the optical transceiver of the interface module by the optical line, the input / output of the optical transceiver of the interface module is connected to the input / output of the microcontroller of the interface module, the outputs of the microcontroller of the interface module are connected to the input to the display and to the audible warning device, the inputs / outputs of the microcontroller of the interface module are connected to the inputs / outputs to a communication controller with a universal serial bus of a personal computer, to an electrically reprogrammable read-only memory device, and to regular enrollment power microcontroller input connected to the output of the keyboard.

The essence of the utility model is illustrated by a flowchart. Figure 1 shows a block diagram of a device for measuring the polarization coefficient of the vector of intensity of electric and magnetic fields of industrial frequency.

The device consists of: electric field sensors 1, 2, 3; magnetic field sensors 4, 5, 6; analog signal switches 7, 8, 9; a three-channel amplifier with an adjustable gain of 10; three-channel fundamental harmonic filter 11; microcontroller measuring module 12; power source of the measuring module 13; the input of the gain controller of the three-channel amplifier 14; inputs of a three-channel analog-to-digital converter of the microcontroller of the measuring module 15, 16, 17; the output of the gain selector of the microcontroller of the measuring module 18; the output of the selector for measuring the electric or magnetic field of the microcontroller of the measuring module 19; optical transceiver measuring module 20; input / output module serial transceiver microcontroller measuring module 21; optical communication line modules 22; optical transceiver module interface 23; input / output module serial transceiver microcontroller interface module 24; keyboard 25; text display 26; an electrically reprogrammable read only memory 27; a communication controller with a universal serial bus of the personal computer 28; microcontroller interface module 29; sound signaling device 30; power supply of the interface module 31;

The device operates as follows: Isotropic sensors of electric (1, 2, 3) and magnetic (4, 5, 6) fields convert field strengths into proportional electric signals along the X, Y, Z axes, which are fed to three analog signal commutators (7) , (8), (9), which, in turn, connect the corresponding field sensors to three independent channels of the pre-amplifier with a variable gain (block-10). The analog signal switches allow the user to select the measured value: the polarization coefficient of the electric or magnetic field intensity vector. In each channel of block 10, an electric signal is amplified to a level convenient for further conversion. Next, the signal enters block 11 - three-channel filter of the fundamental. In this block, harmonic components whose frequencies do not fall in the range of 50 ± 2 Hz are removed from the signal spectra. This filter is necessary to extract three useful industrial-frequency signals proportional to the electric and magnetic fields along the X, Y, Z coordinate axes. The filtered signals are fed to the analog inputs of the microcontroller (block 12), in which analog-to-digital conversion is performed via three channels, corresponding coordinate axes X, Y, Z. Microcontroller (12) selects the measured value, i.e. the electric or magnetic field, supplying a control signal to blocks 7, 8 and 9. Next, the microcontroller (12) simultaneously measures the signal levels u _Xi u _Yi u _Zi at the outputs of block 11, and calculates the instantaneous value . In this way, during one period of industrial frequency, the microcontroller (12) accumulates many instantaneous values [u _i ]. The measurement result is determined by the microcontroller (12) as , i.e. as the ratio of the minimum of the set of values [u _i ] to the maximum of the set of values [u _i ]. The value thus calculated is transmitted to the optical transceiver of the measuring module (20), which transmits the measurement results via optical communication of the modules (22) to the optical transceiver of the interface module (block 23). It should be noted that blocks 1-20 are located in a spherical measuring module. The signal from block 23 enters the microcontroller of the measuring module (block 29). The measurement results are transmitted by the microcontroller to the display (26). Also, the measurement results can be stored in an electrically reprogrammable read-only memory (27), or transmitted through a communication controller with a universal serial bus of a personal computer (block 28). The device is controlled using the keyboard (25) located in the interface module. The device has two independent power sources - blocks 13 and 31, located in the measuring module and the interface module, respectively. Structurally, the measuring module is a single spherical structure, on the surface of which capacitive electric field sensors are located, and inside there are induction magnetic field sensors. This arrangement allows the measurement of electric and magnetic fields at the same time in one point in space, without replacing the measuring module. Communication between the measuring module and the interface module is carried out via the optical communication line of the modules, which does not distort the picture of the electric field at the measurement point.

Claims (1)

A device for measuring the polarization coefficient of electric and magnetic fields of industrial frequency, containing a measuring module and an interface module, electric and magnetic field sensors, analog signal switches, an amplifier, a fundamental filter, a rectifier, an analog-to-digital converter and an optical communication line of the modules, characterized in that the measuring module additionally contains three switches of analog signals, on the one hand connected with three capacitive isotropic electric sensors fields located on the surface of the spherical structure along the X, Y, Z axes, and on the other hand with a three-channel amplifier equipped with a gain control, the amplifier outputs are connected to the inputs of the three-channel main harmonic filter, the outputs of which are connected to the inputs to the microcontroller of the measuring module, containing a three-channel measuring transducer, and connected to the switches of analog signals, with a three-channel amplifier, a power source and an optical transceiver located in the new design, the input / output of the microcontroller of the measuring module is connected to the input / output of the optical transceiver, the second input / output of the optical transceiver of the measuring module is connected to the optical transceiver of the interface module by the optical line, the input / output of the optical transceiver of the interface module is connected to the input / output of the microcontroller of the interface module , the outputs of the microcontroller of the interface module are connected to the inputs of the display and the buzzer, the inputs / outputs of the microcontroller of the module and terfeysa connected to the input / output controller in communication with the universal serial bus of a personal computer, an electrically erasable read only memory and a power source, the microcontroller input connected to the output of the keyboard.