A high-precision acquisition and analysis device for multiple types of signals

Abstract

The application discloses a kind of high-precision acquisition analysis equipment of multiple type signals, comprising: data acquisition module, central processing unit, storage center and display terminal;Data acquisition module includes thyristor channel and sensor channel, and the channel interface of thyristor channel uses isolated optocoupler and carries out optical isolation;Through thyristor channel and sensor channel, the data acquisition of multiple channels is realized, and the opening and closing of thyristor are alternately controlled by central processing unit, the voltage and working state of all thyristors in thyristor channel are collected, the data acquisition of multiple point positions and multiple potentials is realized, the efficiency and utilization of data acquisition are significantly improved, and isolated optocoupler is used to carry out optical isolation, to avoid the interference between different signals;Synchronous digitization processing and analysis are carried out on the multiple groups of data obtained by using central processing unit, the processing time is saved, and the advanced analysis function in specific field is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of industrial control, and particularly relates to a high-precision acquisition and analysis device for multiple types of signals. BACKGROUND

[0002] In the development process of a heating power supply, due to a large output current and a low frequency, the turn-on and turn-off states of thyristors at the output end of the heating power supply need to be strictly defined, especially at the time of commutation. If not handled properly, a circulating current will occur, causing damage to the thyristors, and even serious consequences to the entire main circuit and load. Therefore, in the development process, a data acquisition and analysis instrument needs to be used to detect the states of multiple thyristors in real time to avoid serious consequences.

[0003] In the prior art, a data acquisition and analysis instrument usually adopts an analog signal acquisition circuit and an oscilloscope display structure. The device inputs data of multiple signal channels to an oscilloscope through a sensor for processing and analysis. Although these schemes can meet the requirements of data acquisition and processing and analysis to some extent, they also have some limitations.

[0004] The existing data acquisition and analysis instrument has the following shortcomings. First, the number of channels of the oscilloscope is usually only 4 groups, which cannot meet the requirements of acquisition and real-time processing and analysis of multi-channel data. Second, the channels of the oscilloscope are common, which cannot detect multiple potential signals at the same time, and interference may exist between different signals. Third, with the development of technology, the requirements for the acquisition frequency and synchronization rate of signal acquisition are also increasing, and ordinary oscilloscopes cannot meet the requirements. Fourth, the signal processing in the prior art is usually only in the oscilloscope, which lacks a certain degree of freedom, many process parameters cannot be directly obtained, the original data cannot be processed, advanced analysis functions for specific fields are lacking, and the deep mining and exploration ability of data is limited.

[0005] Therefore, it is particularly important to design a collection and analysis device that can simultaneously collect signal data from multiple sensors or signal sources and provide comprehensive data acquisition and analysis capabilities. SUMMARY

[0006] In order to solve the above problems in the prior art, the present application provides a high-precision acquisition and analysis device for multiple types of signals. The technical problems to be solved by the present application are solved by the following technical solutions.

[0007] A high-precision acquisition and analysis device for multiple types of signals, comprising:

[0008] a data acquisition module, a central processor, a storage center and a display terminal; wherein,

[0009] The data acquisition module comprises a thyristor channel and a sensor channel, a channel interface of the thyristor channel adopts an isolation optical coupler for optical isolation, the thyristor channel is used for collecting voltages and working states of thyristors at an output end of a heating power supply under control of the central processor, and the collected voltages and working states of the thyristors are sent to the central processor; and the sensor channel is used for collecting temperatures of transformers connected with the heating power supply and analog signals output by the heating power supply, and the collected signals are sent to the central processor.

[0010] The central processor is used for controlling an acquisition frequency and a synchronization rate of the data acquisition module, and performing synchronous digital processing on the voltages of the thyristors, the working states of the thyristors, the temperatures of the transformers and the analog signals received by the central processor, and sending processing results to the storage center; the central processor generates control signals according to the voltages and the working states of the thyristors, and alternately controls turn-on and turn-off of the thyristors, so that the thyristor channel collects the voltages and the working states of all the thyristors; and the central processor is also used for analyzing the processing results, identifying faults, abnormalities or changes in the heating power supply, and sending warning information to the storage center.

[0011] The storage center is used for storing the processing results and the warning information.

[0012] The display terminal is used for displaying the processing results and the warning information stored by the storage center through a serial communication mode.

[0013] In an embodiment of the present application, the number of thyristors is 12; of which, 6 thyristors form a P group of thyristor converter circuits, and the remaining 6 thyristors form an N group of thyristor converter circuits.

[0014] In an embodiment of the present application, the thyristor channel comprises 12 state detection sensors; of which,

[0015] Each state detection sensor is connected with one thyristor, and each state detection sensor is used for detecting the voltage and the working state of the thyristor connected therewith.

[0016] In an embodiment of the present application, the sensor channel comprises:

[0017] An output current detection sensor, an output voltage detection sensor and a temperature detection sensor.

[0018] In an embodiment of the present application, the output current detection sensor is used for detecting real-time output current of the heating power supply, and a channel interface of the output current detection sensor adopts an isolation optical coupler for optical isolation.

[0019] The output voltage detection sensor is used for detecting real-time output voltage of the heating power supply, and a channel interface of the output voltage detection sensor adopts the isolation optocoupler for optical isolation.

[0020] The temperature detection sensor is used for detecting real-time temperature data of the transformer, and a channel interface of the temperature detection sensor adopts the isolation optocoupler for optical isolation.

[0021] In an embodiment of the present application, the isolation optocoupler comprises a light-emitting diode and a phototransistor.

[0022] In an embodiment of the present application, the central processor comprises a microprocessor chip of Atmega128 of ATMEL.

[0023] In an embodiment of the present application, the central processor generates a control signal according to the voltage and working state of the thyristor received, alternately controls the turn-on and turn-off of the thyristor, and realizes the working process of the thyristor channel collecting the voltage and working state of all thyristors, which comprises:

[0024] The central processor generates a control signal according to the voltage and working state of the thyristor, alternately controls the turn-on of two thyristors and the turn-off of four thyristors in the P group of thyristor converter circuits, or alternately controls the turn-on of two thyristors and the turn-off of four thyristors in the N group of thyristor converter circuits, and further realizes the thyristor channel collecting the voltage and working state of all thyristors.

[0025] In an embodiment of the present application, the central processor is further used for analyzing the processing result, which comprises:

[0026] statistical analysis, trend analysis and pattern recognition.

[0027] In an embodiment of the present application, the storage center comprises a static random access memory.

[0028] The present application has the following beneficial effects:

[0029] In the scheme provided by the embodiment of the present application, the data collection of multiple channels is realized through the thyristor channel and the sensor channel, the turn-on and turn-off of the thyristor are alternately controlled by the central processor, the voltage and working state of all thyristors are collected by the thyristor channel, the data collection of multiple points and multiple potentials is realized, the efficiency and utilization of data collection are significantly improved, the optical isolation is realized by using the isolation optocoupler, the interference between different signals is avoided, the multiple groups of data obtained are synchronously digitized and analyzed by using the central processor, the processing time is saved, and the advanced analysis function for specific fields can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic diagram of a heating power supply drying transformer;

[0031] Figure 2 It is a working process schematic diagram of a high-precision acquisition and analysis equipment for multiple types of signals provided by the embodiment of the application.

[0032] Figure 3 It is a data acquisition mode schematic diagram of a high-precision acquisition and analysis equipment for multiple types of signals provided by the embodiment of the application.

[0033] Figure 4 It is a schematic diagram of a single-phase AC-AC frequency conversion circuit of a heating power supply.

[0034] Figure 5 It is a schematic diagram of a P group thyristor conversion circuit of a heating power supply.

[0035] Figure 6 It is a structure schematic diagram of a central processing unit of a high-precision acquisition and analysis equipment for multiple types of signals provided by the embodiment of the application.

[0036] Figure 7 It is a data output mode schematic diagram of a high-precision acquisition and analysis equipment for multiple types of signals provided by the embodiment of the application.

[0037] Figure 8 It is a display interface diagram of a high-precision acquisition and analysis equipment for multiple types of signals provided by the embodiment of the application. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings of the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the application.

[0039] Figure 1 It is a schematic diagram of a heating power supply drying transformer. The heating power supply is connected with a three-phase AC power supply through an input filter switch cabinet, and the output end of the heating power supply is connected with a transformer. The high-precision acquisition and analysis equipment for multiple types of signals in the embodiment of the application needs to perform real-time sampling, processing, analysis and monitoring on the signals of the output end of the heating power supply and the temperature of the transformer, helps engineers understand the running state and performance indicators of the system, realizes fault diagnosis and maintenance of the heating power supply, optimizes energy efficiency and energy saving, and further guarantees safe and reliable operation of the system. Therefore, the embodiment of the application is particularly important for safe development of the heating power supply.

[0040] The embodiment of the present application provides a high-precision acquisition and analysis device for multiple types of signals, which can comprise:

[0041] a data acquisition module, a central processor, a storage center and a display terminal, wherein

[0042] the data acquisition module comprises a thyristor channel and a sensor channel, a channel interface of the thyristor channel adopts an isolation optocoupler for optical isolation, the thyristor channel is used for collecting voltages and working states of thyristors at output ends of heating power supplies under the control of the central processor, and the collected voltages and working states of the thyristors are sent to the central processor; the sensor channel is used for collecting temperatures of transformers connected with the heating power supplies and analog signals output by the heating power supplies, and the collected signals are sent to the central processor;

[0043] the central processor is used for controlling an acquisition frequency and a synchronization rate of the data acquisition module, and performing synchronous digitization processing on the voltages of the thyristors, the working states of the thyristors, the temperatures of the transformers and the analog signals received by the central processor, and sending processing results to the storage center; the central processor generates control signals according to the voltages and the working states of the thyristors, alternately controls turn-on and turn-off of the thyristors, and realizes acquisition of the voltages and the working states of all the thyristors by the thyristor channel; the central processor is also used for analyzing the processing results, identifying faults, abnormalities or changes in the heating power supplies, and sending warning information to the storage center;

[0044] the storage center is used for storing the processing results and the warning information;

[0045] the display terminal is used for displaying the processing results and the warning information stored by the storage center in a way of serial communication.

[0046] A working process diagram of the high-precision acquisition and analysis device for multiple types of signals provided by the embodiment of the present application is shown in the following figure: Figure 2The high-precision acquisition and analysis device of multiple types of signals utilizes controllable silicon channels in the data acquisition module to acquire the voltage and working state of the controllable silicon at the output end of the heating power supply, utilizes low-latency fast isolation optical couplers to perform optical isolation, and transmits the acquired voltage and working state of the controllable silicon to the central processor. The sensor channels are utilized to acquire analog signals output by the heating power supply, and the acquired analog signals are transmitted to the central processor. The central processor can be an Atmega128 chip. The central processor generates a control signal according to the received voltage and working state of the controllable silicon, alternately controls the turn-on and turn-off of the controllable silicon, and realizes acquisition of the voltage and working state of all controllable silicon by the controllable silicon channels. The central processor controls the acquisition frequency and synchronization rate of the data acquisition module, and synchronously digitizes the received signals, and transmits the processing results to the storage center. The central processor analyzes and compares the processing results in real time, identifies faults, abnormalities or changes in the heating power supply, and transmits warning information to the storage center. The storage center stores the received data. The display terminal displays the processing results and warning information stored in the storage center through serial communication.

[0047] The high-precision acquisition and analysis device of multiple types of signals provided in the embodiment of the present application is a device for acquiring, analyzing, processing, recording, storing and outputting multiple signal channels. It can simultaneously acquire signal data from multiple sensors or signal sources, and provides comprehensive data acquisition and analysis capabilities. In order to facilitate understanding, the various modules of the high-precision acquisition and analysis device provided in the embodiment of the present application will be introduced respectively.

[0048] Data acquisition module

[0049] The data acquisition module includes controllable silicon channels and sensor channels.

[0050] The principle diagram of data acquisition in the embodiment of the present application is shown in Figure 3 The acquisition module, under the control of the Atmegal128 chip as the central processor, utilizes the controllable silicon channels to acquire data of the controllable silicon at the output end of the heating power supply, and utilizes the sensor channels to acquire the output current, output voltage and temperature of the transformer output by the heating power supply. The channel interface of the controllable silicon channel utilizes low-latency fast isolation optical couplers for optical isolation.

[0051] The principle diagram of the single-phase AC-AC frequency conversion circuit of the heating power supply is shown in Figure 4 The single-phase AC-AC frequency conversion circuit is the acquisition object of the controllable silicon channel. The single-phase AC-AC frequency conversion circuit is composed of multiple controllable silicon.

[0052] Specifically, the number of controllable silicon is 12; among them,

[0053] 6 thyristors constitute a P group of thyristor converter circuit, and the remaining 6 thyristors constitute a N group of thyristor converter circuit.

[0054] The thyristor channel includes 12 state detection sensors, wherein,

[0055] Each state detection sensor is connected with one thyristor, and each state detection sensor is used for detecting the voltage and working state of the connected thyristor.

[0056] Channels 1-12 are composed of the thyristor channel, and one state detection sensor is installed on each of the 12 thyristors, and the voltage and working state of each thyristor are collected by the state detection sensor. The 12 thyristors are at different potentials when working, and therefore a low-delay fast isolation optical coupler is needed to be set at the channel port for optical isolation. The collection frequency and synchronization rate of the thyristor channel are uniformly controlled by the central processor.

[0057] The thyristor channel is used for collecting the voltage and working state of all thyristors at the output end of the heating power supply under the control of the central processor, and sending the voltage and working state of the thyristors to the central processor.

[0058] Specifically, the P group of thyristor converter circuit is taken as an example for illustration, and the schematic diagram of the P group of thyristor converter circuit is shown in Figure 5 .

[0059] A, B and C are three terminals of three-phase alternating current, and the final single-phase output can be controlled by controlling the turn-on and turn-off of the 6 thyristors. The control signal is generated by the central processor according to the signals collected by the thyristor channel. In the working process, the 6 thyristors must be turned on and turned off alternately, and only two thyristors can be turned on at the same time. In this way, the real-time signal collection is adopted to ensure the stable operation of the single-phase AC-AC converter circuit of the heating power supply, avoid the occurrence of error circuit state during circuit conversion, and thus reduce the damage to the circuit.

[0060] The sensor channel includes:

[0061] The output current detection sensor, the output voltage detection sensor and the temperature detection sensor.

[0062] Specifically, the output current detection sensor is used for detecting the real-time output current of the heating power supply, and the channel interface of the output current detection sensor adopts an isolation optical coupler for optical isolation.

[0063] The output voltage detection sensor is used for detecting the real-time output voltage of the heating power supply, and the channel interface of the output voltage detection sensor adopts an isolation optical coupler for optical isolation.

[0064] The temperature detection sensor is used for detecting real-time temperature data of the transformer, and a channel interface of the temperature detection sensor adopts an isolated optocoupler for optical isolation.

[0065] The channel 13 is an output current detection sensor, the channel 14 is an output voltage detection sensor, and the channel 15 is a temperature detection sensor. The acquisition frequency and synchronization rate of the sensor channels are uniformly controlled by the central processor.

[0066] Specifically, the isolated optocoupler includes a light-emitting diode and a phototransistor. The low-delay fast isolated optocoupler is used for optical isolation, so as to avoid interference between different signals in the circuit.

[0067] The sensor channel is used for collecting real-time temperature data of the transformer, collecting real-time output current and real-time output voltage of an analog signal output by a heating power supply, and sending the collected real-time temperature data, real-time output current and real-time output voltage signals to the central processor.

[0068] After the data collection is completed, the central processor is uniformly controlled. The acquisition frequency and synchronization rate can be set by programming the central processor according to requirements. The current sampling synchronization rate can meet an error within 100 mu s or even reach a nanosecond level. By being connected to multiple sensors, data of multiple channels can be collected at the same time.

[0069] The high-precision acquisition and analysis equipment for multiple types of signals provided by the embodiment of the application is a multi-point, multi-potential and multi-channel data acquisition instrument. The equipment can simultaneously receive and record data of multiple different points, different potentials and different signal channels, and can efficiently collect signals of different sources, such as temperature, voltage, current and working state of a thyristor. The important core point of the equipment is to meet three requirements of the acquisition, that is, multi-point, multi-potential and multi-group data signal acquisition, high enough sampling frequency and high enough synchronization rate of multi-group data sampling time. When the equipment is used, not only the working states of 12 thyristors need to be detected at the same time, but also key parameters such as current and voltage are essential parameters in the development process of the heating power supply. In order to meet the demand for controlling the thyristor, the sampling frequency and synchronization rate of the 12 thyristor state data are also very high. The sampling synchronization rate of the multi-point, multi-potential and multi-channel data acquisition instrument has reached a microsecond level or even tens of nanoseconds.

[0070] Central processor

[0071] The central processor includes a microprocessor chip of Atmega128 of the ATMEL company.

[0072] The working process of the central processor can include:

[0073] The central processor reads the thyristor voltage and working state collected by the thyristor channel, and outputs a control signal to control the thyristor to alternately open and close, so as to realize the collection of the thyristor channel on all thyristor voltages and working states; meanwhile, the central processor performs analog-digital conversion on the analog signals collected by the sensor channel; after the central processor completes the above process, the central processor processes and analyzes all the collected information; and the central processor sends the processing result and analysis result to the storage center for data storage.

[0074] The structure principle diagram of the central processor is shown in Figure 6 The A group and the C group of the central processor are connected with the storage center, and are used to output the processed data to the storage center; the 6 pins of the B group are connected with 6 channels for collecting the working states of the thyristors, and the remaining 2 pins are connected with the display terminal, and are respectively used to obtain the working states of the 6 thyristors and display communication; the 6 pins of the D group are connected with the remaining 6 channels for collecting the working states of the thyristors, and the 6 pins are used to obtain the working states of the corresponding 6 thyristors, and the remaining 2 pins are used to output the control signal and control communication; the pins of the E group are used to realize the analog-digital conversion of the output voltage and the output current by using AD7705, and realize digital isolation by using πBOE31; the 6 pins in the F group are used to obtain the voltage of the thyristor, and the remaining 2 groups are used to obtain the temperature of the transformer; the pins of the G group are reserved, and users can introduce other functions according to their own needs.

[0075] The central processor is used to control the collection frequency and synchronization rate of the data collection module, and synchronously digitize the voltage and working state of the thyristor and the analog signal received by itself, and sends the processing result to the storage center; the central processor generates a control signal according to the voltage of the thyristor and the working state of the thyristor, and alternately controls the opening and closing of the thyristor, so as to realize the collection of the voltage and working state of all thyristors by the thyristor channel; the central processor is also used to compare the processing result in real time, identify the fault, abnormality or change in the heating power supply, and send an alarm information to the storage center. The central processor needs to synchronously process the voltage and working state of the thyristor transmitted by the thyristor channel, and then generate a suitable control signal.

[0076] Specifically, the central processor generates a control signal according to the received voltage and working state of the thyristor, alternately controls the opening and closing of the thyristor, realizes the working process of the thyristor channel collecting the voltage and working state of all thyristors, including:

[0077] The central processor generates a control signal according to the voltage of the thyristor and the working state of the thyristor, alternately controls the opening of two thyristors and the closing of four thyristors in the P group thyristor variable current circuit, or alternately controls the opening of two thyristors and the closing of four thyristors in the N group thyristor variable current circuit, and further realizes the voltage and working state collection of all thyristors by the thyristor channel.

[0078] For example, in the collection process, thyristor T1 and thyristor T6 are first opened, and then the voltage difference between outputs AB is obtained. At the next moment, the corresponding control signal controls the closing of thyristor T6 and the opening of thyristor T2, and then the voltage between outputs AC is obtained. Through the output of the control signal by the central processor, the thyristor is alternately opened and closed, and three-phase to single-phase conversion is completed. By using the thyristor channel to collect the voltage and working state of the thyristor, the central processor can determine whether the thyristor is in an open state or a closed state. For example, when thyristor T1 and thyristor T6 are in an open state, and the corresponding control signal is switched to the opening of thyristor T1 and thyristor T2, the voltage and working state of thyristor T6 are collected first to determine that thyristor T6 is in an open working state, and the corresponding control signal is sent to close thyristor T6. When the central processor determines that thyristor T6 is completely closed and the time for opening thyristor T2 arrives, the central processor sends a corresponding control signal to control the opening of thyristor T2.

[0079] The multi-type signal high-precision collection and analysis device provided by the embodiment of the application also provides various data analysis and processing functions. Users can apply various algorithms, filters, statistical methods and signal processing techniques to synchronously process the collected data. By analyzing the multi-channel data, useful information can be extracted.

[0080] Specifically, the central processor is further configured to analyze the processing result, including:

[0081] statistical analysis, trend analysis and pattern recognition.

[0082] The central processor can be programmed to implement advanced signal processing and data processing algorithms.

[0083] The central processor calculates the output frequency of the heating power supply according to the collected output current and output voltage. Users can adjust the collection and analysis parameters as needed to realize customized data collection and analysis process. The multi-type signal high-precision collection and analysis device can help users monitor and analyze the performance and real-time working state of the measured system in real time. By processing and comparing the data of multiple channels collected in real time, it can identify faults, abnormalities or changes in the system and provide early warning and alarm functions. This helps users to take timely measures to ensure the normal operation and safety of the system.

[0084] Storage center

[0085] The storage center comprises a static random access memory.

[0086] The storage center is used for storing processing results and alarm information. The high-precision acquisition and analysis equipment of multiple types of signals has data recording and storage functions, and can save the collected data on the internal memory or external memory, realizing power-off saving. Users can conveniently access the recorded data at any time for subsequent analysis and research. The frequency of the storage center for storing related parameters can be realized by adjusting the frequency division parameter of the analog-to-digital conversion.

[0087] Display terminal

[0088] The display terminal is used to display the processing results and alarm information stored in the storage center through serial communication. The schematic diagram of the data output mode of the high-precision acquisition and analysis equipment is shown in Figure 7 . The storage center is connected with the display terminal through serial communication, and transmits the stored data to the display terminal through the serial port; the display terminal displays the running state and related parameters of the heating power supply in the form of numerical display and image display through the display, and the specific display interface diagram of the high-precision acquisition and analysis equipment is shown in Figure 8 . The display terminal is configured with a display having high resolution and large screen size, and users can clearly see the real-time data and historical curves displayed on the display from the interface of the display. Users can interact with the high-precision acquisition and analysis equipment through the intuitive interface, and adjust the acquisition and analysis parameters as needed to realize customized data acquisition and analysis process.

[0089] The microprocessor chip of the model Atmega128 of the ATMEL company is adopted in the embodiment of the present application to realize the acquisition of multi-point multi-potential multi-channel data, low-delay fast isolation optocouplers are used for optical isolation, the collected analog signals are converted into digital signals by the central processing unit for analysis and storage, and finally the data are displayed in real time by the display terminal using the display, realizing efficient acquisition, real-time processing and intuitive output of multi-channel data. This scheme provides a convenient and reliable way for users to acquire and analyze multi-channel data, and has wide application prospect and market potential.

[0090] The high-precision acquisition and analysis equipment of multiple types of signals proposed in the embodiment of the present application has three working modes: multi-point multi-potential multi-channel signal synchronous acquisition mode, multi-channel signal synchronous processing and storage mode, and data output mode. The working processes in the three working modes will be described in detail below.

[0091] Multi-point multi-potential multi-channel signal synchronous acquisition mode

[0092] The multi-point, multi-potential and multi-channel data acquisition module synchronously acquires information by using multiple sensors. The 12 controllable silicon channels are dedicated channels, and the required acquisition frequency and synchronization rate between them are very high. Meanwhile, since the controllable silicon is working at different potentials, a low-delay fast optocoupler is arranged at each channel interface as an isolation optocoupler for sampling. By using optical isolation, the signal sampling of different points and different potentials is realized, and external interference and mutual interference between each other are also isolated. According to the requirement, multiple channels are opened to receive signals, and the central processor digitizes the analog signals. After receiving the signals, the central processor adjusts the sampling frequency of the signals and stores them in the external memory as a storage center. The sensor channel is also reserved on the data acquisition module for acquiring the output current, output voltage and temperature of the transformer.

[0093] Multi-channel signal synchronous processing and storage mode:

[0094] The central processor and the storage center are the data processing core parts of the high-precision acquisition and analysis equipment, mainly composed of an Atmega128 microprocessor chip and a static random access memory, and are mainly responsible for synchronous and simultaneous calculation, processing and storage of multi-point, multi-potential and multi-channel data. The Atmega128 microprocessor chip is programmed inside to synchronously process and calculate the 12 groups of controllable silicon signals, and then generate the control signals of the controllable silicon. At the same time, the Atmega128 microprocessor chip also processes the output current, output voltage and temperature of the heating power supply, and obtains the frequency of the heating power supply according to the output current and output voltage. After processing all the signals, the obtained data is stored in the storage center, so that the user can export and view the data at any time.

[0095] Data output mode:

[0096] The storage center connects a display terminal to output data by a serial port output mode, and uses a display to display the temperature of the transformer, the frequency, voltage and current of the heating power supply, and whether the heating power supply is in a normal working state.

[0097] In the scheme provided by the embodiment of the application, the data acquisition of multiple channels is realized by the controllable silicon channels and the sensor channels, the opening and closing of the controllable silicon are alternately controlled by the central processor, the voltage and working state of all controllable silicon are acquired by the controllable silicon channels, the data acquisition of multiple points and multiple potentials is realized, the efficiency and utilization of data acquisition are significantly improved, the interference between different signals is avoided by using the isolation optocoupler for optical isolation, the multiple groups of data are synchronously digitized and analyzed by the central processor, the processing time is saved, and the advanced analysis function for a specific field can be realized.

[0098] The above merely provides the preferred embodiments of the application, and not intended to limit the protection scope of the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall fall within the protection scope of the application.

Claims

1. A high-precision acquisition and analysis device of multiple types of signals, characterized in that, The application relates to a heating power supply monitoring system. The system comprises a data acquisition module, a central processor, a storage center and a display terminal. The data acquisition module comprises a thyristor channel and a sensor channel, the channel interface of the thyristor channel adopts optical isolation of an isolation optical coupler, the thyristor channel is used for collecting the voltage and working state of a thyristor at an output end of a heating power supply under the control of the central processor, and the collected voltage and working state of the thyristor are sent to the central processor; the sensor channel is used for collecting the temperature of a transformer connected with the heating power supply and an analog signal output by the heating power supply, and the collected signals are sent to the central processor. The central processor is used for controlling the collection frequency and synchronization rate of the data acquisition module, and performing synchronous digital processing on the voltage of the thyristor, the working state of the thyristor, the temperature of the transformer and the analog signal received by the central processor, and sending the processing results to the storage center. The central processor generates control signals according to the received voltage and working state of the thyristor, alternately controls the turn-on and turn-off of the thyristor, and realizes the collection of the voltage and working state of all thyristors by the thyristor channel; the central processor is also used for analyzing the processing results, identifying faults, abnormalities or changes in the heating power supply, and sending warning information to the storage center. The storage center is used for storing the processing results and the warning information. The display terminal is used for displaying the processing results and the warning information stored in the storage center through serial communication.

2. The high-precision acquisition and analysis device of multiple types of signals according to claim 1, characterized in that, The number of thyristors is 12; wherein 6 thyristors form a P group of thyristor converter circuits, and the remaining 6 thyristors form an N group of thyristor converter circuits.

3. The high-precision acquisition and analysis device of multiple types of signals according to claim 2, characterized in that, The thyristor channel comprises 12 state detection sensors; wherein Each state detection sensor is connected with one thyristor, and each state detection sensor is used for detecting the voltage and working state of the thyristor connected therewith.

4. The high-precision acquisition and analysis device of multiple types of signals according to claim 3, characterized in that, The sensor channel comprises: An output current detection sensor, an output voltage detection sensor and a temperature detection sensor.

5. The high-precision acquisition and analysis device of multiple types of signals according to claim 4, characterized in that, The output current detection sensor is used for detecting the real-time output current of the heating power supply, and the channel interface of the output current detection sensor adopts optical isolation of the isolation optical coupler; The output voltage detection sensor is used for detecting the real-time output voltage of the heating power supply, and the channel interface of the output voltage detection sensor adopts optical isolation of the isolation optical coupler; The temperature detection sensor is used for detecting the real-time temperature data of the transformer, and the channel interface of the temperature detection sensor adopts optical isolation of the isolation optical coupler.

6. The high-precision acquisition and analysis device of multiple types of signals according to claim 5, characterized in that, The isolation optical coupler comprises a light-emitting diode and a phototransistor.

7. The high-precision acquisition and analysis device of multiple types of signals according to claim 5, characterized in that, The central processor comprises a microprocessor chip of Atmega128 of the ATMEL company.

8. The high-precision acquisition and analysis device of multiple types of signals according to claim 7, characterized in that, The working process of the central processor for generating control signals according to the received voltage and working state of the thyristor, alternately controlling the turn-on and turn-off of the thyristor, and realizing the collection of the voltage and working state of all thyristors by the thyristor channel comprises: The central processor generates a control signal according to the voltage of the thyristor and the working state of the thyristor, alternately controls 2 thyristors in the P group thyristor variable current circuit to be turned on and 4 thyristors to be turned off, or alternately controls 2 thyristors in the N group thyristor variable current circuit to be turned on and 4 thyristors to be turned off, so as to realize the voltage and working state of all thyristors collected by the thyristor channel.

9. The high-precision acquisition and analysis device of multiple types of signals according to claim 8, characterized in that, The central processor is further used for analyzing the processing result, including: statistical analysis, trend analysis and pattern recognition.

10. The high-precision acquisition and analysis device of multiple types of signals according to claim 1, characterized in that, The storage center includes a static random access memory.

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