UA148433U - DIGITAL PROCESSING PROCESSING DEVICE OPERATING IN CONTINUOUS CYCLIC MODE WITHIN THE STATION OF GEOLOGICAL-TECHNOLOGICAL EXPERIMENTS (37) - Google Patents

Abstract

The digital signal processing device operating in a continuous cyclic mode as part of the station of geological and technological research consists of a block of signal divider from sensors, which contains a low-pass filter, input voltage divider, output signal filter and maximum output voltage limiter, two switching units analog signals, each containing a multi-channel analog switch, an analog-to-digital conversion unit comprising an analog-to-digital converter and a reference power supply unit, a frequency-time signal interface unit comprising an input fuse, an input threshold filter and a rectangular signal shaper, a unit encoder interface containing input fuse, input threshold filter and rectangular signal shaper, microcontroller unit containing eight-bit microcontroller, power supply unit and interface unit containing optoisolators and microcontroller signal converters into unified right.

Description

The useful model belongs to automation and control-measuring equipment that works as part of a geological-technological research station, in particular to devices that are installed on a drilling rig and collect signals from technological sensors and then transmit them in the form of a digital signal via an exchange interface on a staff PC drilling team with appropriate software for visualization of drilling processes.

A well-known multi-channel device for collecting, processing and batch transmission of the results of measurement of technological parameters from primary converters (А 107320 сС2, 10.12.2014), which contains a signal switching unit, made with the possibility of receiving electrical signals from analog primary converters, an analog-to-digital converter and a microcontroller, and the signal switching unit is connected by i-outputs to the analog signal optical decoupling unit, which contains input buffer amplifiers and filters, analog optoisolators, amplifiers that scale input signals to the range of the analog-to-digital converter, an analog multiplexer, and connected to at least one stabilized power supply unit, and n-th outputs connected to a block of optical resolution of frequency-time signals, containing optoisolators of depth counter signals and optoisolators and converters of the level of frequency-time signals, and the block of optical resolution analog signal connections and an optical decoupling block often tno-time signals are connected to the analog-to-digital converter block, which contains an analog-to-digital converter, made in the form of a 24-bit sigma-delta analog-to-digital converter, the input of which is connected to the output of the reference voltage source, event triggers, a microcontroller , connected to the service connector of an opto-isolated serial interface or a hard disk for data storage, while in the signal switching unit on each input channel from analog sensors a load resistor is installed with the possibility of disconnection, and every i-th output of the signal switching unit with connected to the input of the corresponding buffer amplifier and filter, the i-th output of which is connected to the i-th input of the corresponding analog optoisolator, the i-th output of which, in turn, is connected to the i-th input of the corresponding amplifier that scales the input signals to the range of a 24-bit sigma-delta analog-to-digital converter, and the outputs of the specified amplifiers are connected to the ith input of an analog multiplex xora, the output of which is connected to a 24-bit sigma-delta analog-diff

With a converter, and the input - with a microcontroller, each n-th output channel of the block of switching signals from time-frequency event counters is connected to the n-th input of the corresponding optoisolator of the depth counter signals or optoisolator and frequency-time signal level converter, n-no the outputs of which are connected to the inputs of the corresponding event triggers, the outputs of which are connected to the input of the microcontroller, while the output and input of the latter are connected to the output and input of a 24-bit sigma-delta analog-to-digital converter.

Disadvantages of the analogue include: - insufficient accuracy of data measurement from primary converters due to errors on the optoisolators of the input channels; - insufficient number of analog channels and no possibility of their expansion; - data correction is carried out through a separate device, which leads to the interruption of the process of data collection from the primary converters and the transfer of data from the microprocessor through the exchange interface at the time of data correction.

The stated useful model is based on the task of increasing the speed of data collection and calculation of processes by the microprocessor unit, increasing the level of accuracy of measuring indicators from technological sensors and expanding the number of analog channels.

The claimed utility model is explained by a drawing schematically depicting a digital signal processing device that operates in continuous cyclic mode as part of the geological-technological research station (Zrhyi-37).

The claimed useful model consists of the following elements: block (1) signal divider from sensors, two blocks (2), (3) switching of analog signals, block (4) analog-to-digital conversion, block (5) interface of frequency-time signals, block (b) encoder interface, microcontroller unit (7), power supply unit (8) and interface unit (9). The block (1) of the signal divider from the sensors contains a low-pass filter (1.1) to eliminate interference at the input, a divider (1.2) of the input voltage by 4 to bring the signal to the level of the output voltage of the analog-to-digital converter (ADC), a filter (1.3) of the output signal , which provides additional filtering against interference, limiter (1.4) of the maximum voltage of the output signal to protect circuits from overload. Each of the analog signal switching units (2), (3) contains a multi-channel analog switch, the operation of which is controlled by the microprocessor unit (7), in particular the microprocessor, using a digital signal. Blocks (2), (3) are connected to blocks (1) and (4) by mounting on printed circuit boards, as well as to block (7) by a parallel digital bus. Block (4)

analog-to-digital converter contains an analog-to-digital converter and a reference power supply unit (which are assembled according to the standard scheme proposed by the manufacturer of integrated microcircuits). Unit (4) is connected to units (2), (3) and (8) by mounting on printed circuit boards, as well as to unit (7) of the microcontroller, which controls its operation, by serial interface 5RI. The block (5) of the frequency-time signal interface contains the input fuse (5.1), the threshold filter (5.2) of the input signal and the shaper (5.3) of the rectangular signal. Block (5) is connected to blocks (7) and (8) by mounting on printed circuit boards. The block (b) of the encoder interface contains the input fuse (6.1), the threshold filter (6.2) of the input signal and the shaper (6.3) of the rectangular signal. Block (b) is connected to blocks (7) and (8) by mounting on printed circuit boards.

The microcontroller block (7) contains an 8-bit microcontroller in a standard connection scheme.

Unit (7) is connected to units (2), (3), (4), and (8) by mounting on printed circuit boards, as well as to unit (9) of the interface by means of a serial bus. The power supply unit (8) contains at least one standard power supply module. Block (8) is connected to blocks (2) - (7) and block (9) by mounting on printed circuit boards. The interface block (9) contains a converter of microcontroller signals into unified signals of one or more standards, of which: K5232-11Y,

K5232, 25485, 25422, OV or M/-Ri. Block (9) also contains optoisolators. Block (9) is connected to block (7) using a serial bus, and also to block (8) by mounting on printed circuit boards.

The device works as follows. The analog signal from technological sensors in the range of 0-10 V, 4-20 mA enters the filter (1.1) of low frequencies to eliminate interference at the input. From the filter (1.1), the signal enters the divider (1.2) of the input voltage by 4 to bring the signal into compliance with the output voltage level of the analog-to-digital converter in the range of 0-2.5 V. From the divider (1.2), the signal enters the filter (1.3) of the output signal From the filter (1.3), the signal enters the limiter (1.4). Each signal has its own chain of blocks (1.1)-(1.2)-(1.3)-(1.4). From block (1), the processed analog signals enter the inputs of two blocks (2), (3) of switching analog signals. Blocks (2), (3) at the command of the microprocessor pass one of the analog signals to the input of block (4) of the analog-to-digital converter. In this way, the microcontroller alternately processes analog channels by digitizing signals and stores the conversion results in the RAM of the PC, which is an element of the geologic station.

From technological studies. The time-frequency signal enters the input of the block (5) of the interface of time-frequency signals through the block (5.1) of the input fuse. From the output of the block (5.1), the signal enters the input of the block (5.2) of the threshold filter of the input signal. From the output of the block (5.2), the signal enters the block (5.3) of the rectangular signal generator. From block (5.3), the signal goes to block (7) of the microcontroller for further processing. Each time-frequency signal has its own chain of blocks (5.1)-(5.2)-(5.3). The encoder signal enters the block (6) from the input fuse (6.1). Next, from the output of the block (6.1), the signal enters the input of the block (6.2) of the threshold filter of the input signal, then from the output of the block (6.2), the signal enters the block (6.3) of the rectangular signal generator, and from the block (6.3), the signal enters the block (7) ) of the microcontroller for further processing. Each encoder signal has its own chain of blocks (6.1)-(6.2)-(6.3). The data exchange between the interface block (9) and the microcontroller block (7) is responsible for the block recorder (9). The number of input analog channels - 32. The number of input frequency-time channels - 4. The number of input channels of the encoder - 1. Thus, the microcontroller alternately processes analog channels by digitizing signals and stores the conversion results in the PC's RAM.

The technical result of the digital signal processing device (brgshi-37) is expressed by the fact that, thanks to the use of direct processing of analog signals, the accuracy of converting an analog signal into a digital one increases. Data exchange with the recorder does not prevent the processing of analog channels by digitizing signals, nor the processing of other input signals, which ensures the continuity of the analysis. An additional technical result is expressed by the possibility of adjusting encoder values through the interface unit (9) using the exchange protocol of specialized software, without interfering with the processing of analog channels, as well as the processes of calculation and information transmission by the microcontroller unit (7).

Claims (9)

USEFUL MODEL FORMULA 1. A digital signal processing device operating as part of a geological-technological research station in a continuous cyclic mode, which contains a block (4) of an analog-to-digital converter and a block (2) for switching analog signals, which differs in that it contains one more block (3) switching of analog signals, block (1) of the divider of signals from sensors, block (5) frequency-time signal interface, encoder interface block (b), microcontroller block (7), power supply block (8) and interface block (9), and sensor signal divider block (1) contains at least one low-pass filter (1.1) each to eliminate interference at the input, the divider (1.2) of the input voltage into four to bring the signal to the level of the output voltage of the analog-to-digital converter, the filter (1.3) of the output signal, which provides additional filtering from interference, the limiter (1.4) of the maximum voltage of the output signal for protection chains from overload; each of the analog signal switching units (2), (3) contains at least one multi-channel analog switch, the operation of which is controlled by the microprocessor unit (7), in particular, the microprocessor using a digital signal; unit (4) of analog-to-digital conversion contains at least one analog-to-digital converter and a power supply unit; block (5) of the interface of frequency-time signals contains at least one input fuse (5.1), a threshold filter (5.2) of the input signal and a shaper (5.3) of a rectangular signal; block (b) of the encoder interface contains at least one input fuse (6.1), a threshold filter (6.2) of the input signal and a shaper (6.3) of a rectangular signal; the microcontroller unit (7) consists of at least one eight-bit microcontroller; power unit (8) consists of at least one power module; the interface block (9) contains at least one optoisolator and a converter of microcontroller signals into unified signals, and the block (1) of the signal divider from the sensors is connected to the blocks (2), (3) of switching analog signals; blocks (2), (3) are connected, except for block (1), with blocks (4), (7), as well as with block (8); block (4) of analog-to-digital conversion is connected, in addition to blocks (2), (3), with block (7) of the microcontroller, and also connected with block (8); unit (5) of the frequency-time signal interface is connected to the unit (7) of the microcontroller, and also connected to the unit (8); block (b) of the encoder interface is connected to block (7) of the microcontroller, as well as to block (8); block (7) of the microcontroller is connected, in addition to blocks (2), (3), (4), with block (9) of the interface, as well as with block (8); power unit (8) is connected to units (2) - (7) and (9); block (9) of the interface is connected, except for block (7), with block (8). 2. The device according to claim 1, which is characterized by the fact that the unit (1) is connected to the units (2), (3) by mounting on printed circuit boards. 3. The device according to claim 1, which differs in that the units (2), (3) are connected to the unit (4) by mounting on 0) printed circuit boards and to the unit (7) by a parallel digital bus. 4. The device according to claim 1, which is characterized by the fact that the unit (4) is connected to the unit (7) via the Z5RI serial interface. 5. The device according to claim 1, which differs in that the unit (5) is connected to the unit (7) by mounting on printed circuit boards. 6. The device according to claim 1, which differs in that block (b) is connected to block (7) by mounting on printed circuit boards. 7. The device according to claim 1, which is characterized by the fact that the unit (7) of the microcontroller is connected to the unit (9) using a serial bus. 8. The device according to claim 1, which is characterized by the fact that the unit (8) is connected to the units (2) - (7) and (9) by mounting on printed circuit boards. 9. The device according to claim 1, which differs in that the microcontroller signal converters into unified signals work according to the K5Z232-TTI and/or K5232, and/or K5485, and/or 25422, and/or O5V, and/or UMi-Ri standard .