A pluggable TDM device and method

Abstract

The application relates to a pluggable TDM device and method, which comprises a TSI instrument and a TDM special module, the TSI instrument contains a TSI instrument monitor frame and a power supply, an on-site key phase & configuration & network communication module and a monitor module, the TDM special module contains a signal acquisition module, a management module and an upper computer analysis system; the signal acquisition module is pluggably installed on the monitor module, and the management module is pluggably installed on the on-site key phase & configuration & network communication module; the on-site key phase & configuration & network communication module and the monitor module transmit real-time data and original parameter signals to the signal acquisition module and the management module, data packets are sent to a high-speed buffer area through a bus board, and the network communication module transmits the data packets to the upper computer analysis system through a local area network; the application can forward the function of a TDM high-speed data acquisition part, can reduce the pressure of a CPU in a TDM system, can reduce the cost of the TDM system, and can reduce the system cost.

Description

[TECHNICAL FIELD]

[0001] The present application belongs to the technical field of large rotating machinery vibration analysis and diagnosis, and particularly relates to a pluggable TDM device and method. [BACKGROUND]

[0002] A large rotating machinery vibration analysis and diagnosis (referred to as TDM for short) system is generally as follows: TDM system is short for large rotating machinery vibration analysis and diagnosis. In the early days, people were most concerned about how to ensure the safe operation of large rotating machinery, and therefore designed and manufactured various sensors and monitors in every possible way, gradually forming turbine monitoring and protection instruments (referred to as TSI instruments), which played a very big role in protecting the safe operation of large steam turbine units. Later, TSI instruments were not only used for large steam turbine units, but also widely used on fans, various pump shafts, pump groups, motors, and other rotating machinery. Currently, enterprises with conditions install TSI instruments on all rotating machinery as a standard configuration. With the increasing reliability and safety of TSI instruments, their importance is irreplaceable. With the rapid development and popularization of computers, people not only care about the safe operation of rotating machinery, but also begin to consider how rotating machinery is damaged. Based on the collected historical data of rotating machinery, analysis is performed to obtain beneficial data information, realize the estimation of rotating machinery failure, change the original periodic maintenance or repair of the unit, improve the use efficiency of the unit, and reduce the maintenance cost. A specialized discipline mainly researching rotating machinery vibration parameters, i.e., rotating machinery vibration analysis and diagnosis system (i.e., TDM system), is gradually formed.

[0003] The main object of study of the TDM system is the vibration of rotating machinery. Because the vibration of the bearings of rotating machinery can reflect the operating condition of the unit, the unit vibration is transient, and the theoretical basis for studying vibration is to analyze the frequency and amplitude of vibration. From the relationship between different frequencies and amplitudes of vibration, the operating condition of the unit is studied, and the mathematical basis is to discretize the continuous analog signal and convert the continuous time-domain signal into a discrete frequency-domain signal, and to perform digital processing on the vibration signal. The core part of the TDM system is fast Fourier transform, i.e., fast FFT processing. After obtaining useful information of the operating unit, various graphic processing is performed, such as trend chart, bar chart, frequency spectrum chart, shaft center trajectory & waveform chart, waterfall chart, polar coordinate chart, X-Y chart, S-V chart, Bode chart, cascade chart, full spectrum chart, Campbell chart, etc. Through analysis of these charts, experts engaged in rotating machinery vibration analysis can determine the cause of the failure of the rotating machinery, and then perform targeted repair on the failed rotating machinery, thereby reducing the maintenance cost.

[0004] At present, the conventional method of large-scale rotating machinery vibration analysis and diagnosis (TDM) system in China is to take the signal from the sensor installed on the site or the buffer output signal of TDM instrument as the input signal, connect the input signal to the high-speed data acquisition module of TDM system, perform high-speed data acquisition, then store the high-speed acquired vibration transient data into the server, and by the computer installed with TDM software, various graphic processing is performed on the data through local area network to generate various graphs to realize the function of TDM system. According to the conventional method in China, since the system needs a large number of high-speed data acquisition modules, the CPU of computer system needs to manage a large number of high-speed data acquisition and complete the generation of various graphs according to the acquired data, the load pressure of CPU is very large. In order to reduce the cost of TDM system and reduce the pressure of CPU in TDM system, it is of great significance to design a new device and method to realize the function of TDM. [SUMMARY]

[0005] The purpose of the present application is to solve the above problems and provide a pluggable TDM device, which adopts a pluggable structure to move the function of high-speed data acquisition part of TDM forward, so that the function of this part is completed in TSI instrument, thereby reducing the pressure of CPU in TDM system, reducing the cost of TDM system, simplifying the complexity of the structure of traditional TDM system and reducing the system cost.

[0006] In order to achieve the above purpose, a pluggable TDM device is designed, which comprises a TSI instrument and a TDM special module, the TSI instrument comprises a TSI instrument monitor frame, a power supply 1, an on-site key phase & configuration & network communication module 2 and a monitor module 3, the TDM special module comprises a signal acquisition module 4, a management module 5 and an upper computer analysis system 6; the signal acquisition module 4 is pluggably installed on the monitor module 3 and directly acquires the original parameter signal from the monitor module 3, and after high-speed sampling, the original parameter signal is cached locally, the signal acquisition module 4 has a synchronous high-speed analog quantity acquisition circuit; the management module 5 is pluggably installed on the on-site key phase & configuration & network communication module 2 and acquires real-time data of the whole system from the configuration module of the on-site key phase & configuration & network communication module 2; the on-site key phase & configuration & network communication module 2 and the monitor module 3 transmit the real-time data and the original parameter signal to the signal acquisition module 4 and the management module 5, after data acquisition, data analysis and fast Fourier transform by the signal acquisition module 4 and the management module 5, the data is packaged, the data packet is sent to the high-speed buffer area through the bus board, and the network communication module transmits the data to the upper computer analysis system 6 through local area network.

[0007] Further, the TSI instrument monitor frame and power supply 1 includes a monitor frame for monitor installation and fixation, a busbar plate inside the monitor frame for individual monitor connection, and a frame power supply providing required power supply for individual monitor.

[0008] Further, the on-site key phase & configuration & network communication module 2 includes a key phase output module, a monitor configuration module, and a network communication module. The key phase output module is used to provide synchronized key phase signals for a TDM system, and each module can provide up to four key phase signals. The monitor configuration module configures monitor modules in the frame, configures general monitor modules into required TSI parameter monitors, and completes TSI instrument monitoring and protection functions. The management module 5 provides two Ethernet ports for backup to each other, is used to send TDM data to an upper computer, obtains detection data cached by the signal acquisition module 4 through an RS485 bus inside, uses a UART port to communicate with the network communication module attached thereto, and obtains real-time data of the entire frame system.

[0009] Further, the network communication module is installed in the on-site key phase & configuration & network communication module 2, and up to eleven signal acquisition modules 4 are installed on the monitor module 3. The eleven signal acquisition modules 4 transmit collected real-time data to an Ethernet port of the network communication module through a rear busbar plate of the monitor case, send the data to a computer installed with TDM software through a local area network after the data is packetized, and perform data processing in the computer.

[0010] Further, in the signal acquisition module 4, the sensor signal input end 101 sends the real-time signal of the sensor on site into the signal protection circuit 102, the signal protection circuit 102 limits the current and voltage of the input signal, the output end of the signal protection circuit 102 is connected with the signal isolation and following circuit 103, the signal isolation and following circuit 103 is used for impedance matching and improving the input impedance, the output end of the signal isolation and following circuit 103 is connected with the AC / DC separation circuit 104, the AC / DC separation circuit 104 separates the signal into two paths of the AC protection circuit 105 and the DC sampling circuit 106 after AC / DC separation, and the two paths respectively perform AC protection and DC sampling; the outputs of the AC protection circuit 105 and the DC sampling circuit 106 are respectively sent to the signal setting circuit one 107 and the signal setting circuit two 108, and after being adjusted to be appropriate signals by the signal setting circuit one 107 and the signal setting circuit two 108, the signals are sent into the CPU component 109, the CPU component 109 receives the AC signal and the DC signal, and simultaneously outputs a DC signal according to the size of the received AC signal and DC signal; the signal setting circuit one 107 and the signal setting circuit two 108 are respectively connected with the high-speed transient analog-digital sampling 110, the high-speed transient analog-digital sampling 110 simultaneously collects the AC component, the DC component and the bias voltage, and performs packet processing on the data, and sends the data packet to the data buffer area 111.

[0011] Further, the host computer software in the host computer analysis system 6 analyzes the data obtained by the system, obtains characteristic information containing but not limited to bearing vibration, rotating speed, expansion difference, axial displacement and phase on the basis of strict time domain synchronization, and provides data and various processed graphics.

[0012] The application further provides a mounting method of the pluggable TDM device, a J1 socket is arranged on the on-site key phase & configuration & network communication module 2 of the TSI instrument, and is used for mounting the management module 5; a J2 socket is arranged on the monitor module 3 of the TSI instrument, and is used for mounting the signal acquisition module 4; the J1 socket is connected with two paths of synchronous key phase signals, one path of RS485 bus interface and one group of 5V DC power supply; the J2 socket is connected with each analog signal, the analog signal input of the monitor module 3 is separated into one path of AC component and one path of DC component after adjustment, and then the voltage bias of the adjustment circuit is added, so that two groups of inputs are obtained; the J2 socket of the management module 5 leads out two groups of RJ45 interfaces, and another group of UART interfaces in TTL format is further provided.

[0013] Further, the communication mode of the on-site key phase & configuration & network communication module 2 is that the management module 5 installed on the on-site key phase & configuration & network communication module 2 is provided with two Ethernet ports, the management module 5 provides two Ethernet ports which are mutually reserved for an upper computer for sending TDM data, and uses a UART port to acquire slow real-time data of the whole system; the signal acquisition module 4 installed on the monitor module 3 acquires the buffered detection data through an RS485 bus inside, and each TSI instrument frame can be connected with eleven signal acquisition modules 4 at most.

[0014] Compared with the prior art, the present application has the following advantages: the present application adopts the pluggable TDM device, inserts two kinds of TDM special modules into each monitor module of the TSI instrument, and uses the on-site key phase & configuration & network communication module of the TSI instrument to realize the configuration and network communication of the measured parameters, thereby overcoming the defect that the conventional TDM system needs a large number of high-speed data acquisition modules and the CPU of the computer system needs to manage a large number of high-speed data acquisition and complete the generation of various graphs according to the acquired data, and the load of the CPU is too large, the high-speed data acquisition is moved to the TSI instrument, the load of the CPU of the computer system is reduced, the risk of possible failure of centralized data acquisition is dispersed, and the TDM system is brought. Moreover, the present application adopts the pluggable structure, when needed, the TDM special module is inserted, and a relatively complex TDM system can be formed through the local area network. In addition, the function of acquiring real-time data is placed in the TSI instrument, the configuration function, the communication function, the synchronization function of transient data and the like of the TSI instrument can be fully utilized, a large number of connection lines can be reduced, the TDM system is formed only through the Ethernet connection, the complexity of the structure of the conventional TDM system is simplified, and the system cost is reduced. In summary, the function of the TDM high-speed data acquisition part is moved forward, the function is completed in the TSI instrument, thereby the pressure of the CPU in the TDM system can be reduced, the cost of the TDM system is reduced, the system cost is reduced, and the present application is worth popularizing and applying. [SUMMARY]

[0015] Figure 1 is a schematic diagram of the pluggable TDM device structure of the present application;

[0016] Figure 2 is a schematic diagram of the TDM device system of the present application;

[0017] Figure 3 is a schematic diagram of the signal processing of the TDM acquisition module (TDM-AC) of the present application;

[0018] Figure 4 is a schematic diagram of the communication mode of the TDM device of the present application;

[0019] In the figure: 1, TSI instrument monitor frame and power supply 2, on-site key phase & configuration & network communication module 3, monitor module 4, signal acquisition module 5, management module 6, host computer analysis system 101, sensor signal input end 102, signal protection circuit 103, signal isolation following circuit 104, AC / DC separation circuit 105, AC protection circuit 106, DC sampling circuit 107, signal setting circuit one 108, signal setting circuit two 109, CPU component 110, high-speed transient analog-digital sampling 111, data buffer area 112, measurement channel 113, Ethernet port one 114, Ethernet port two. [DETAILED DESCRIPTION]

[0020] The application provides a pluggable TDM device, which comprises a TSI instrument and a TDM special module, the TSI instrument comprises a TSI instrument monitor frame and power supply 1, an on-site key phase & configuration & network communication module 2 and a monitor module 3, and the TDM special module comprises a signal acquisition module 4 (TDM-AC), a management module 5 (TDM-MG) and a host computer analysis system 6; the signal acquisition module 4 is pluggably installed on the monitor module 3 and directly obtains original parameter signals from the monitor module 3, carries out high-speed sampling and then buffers locally, and the signal acquisition module 4 has a synchronous high-speed analog quantity acquisition circuit; the management module 5 is pluggably installed on the on-site key phase & configuration & network communication module 2 and obtains real-time data of the whole system from a configuration module of the on-site key phase & configuration & network communication module 2; the on-site key phase & configuration & network communication module 2 and the monitor module 3 transmit the real-time data and the original parameter signals to the signal acquisition module 4 and the management module 5, after data acquisition, data analysis and fast Fourier transform of the signal acquisition module 4 and the management module 5, the data are packed, the data packet is sent to a high-speed buffer area through a bus board, and the network communication module transmits the data to the host computer analysis system 6 through a local area network.

[0021] The application installs the data acquisition part of the TDM system on the monitor module of the TSI instrument, and has two TDM special modules, a TDM management module (TDM-MG) and a TDM acquisition module (TDM-AC), which can be combined into a system through a local area network; the plug-in installation structure is convenient for expansion on the basis of the TSI instrument, and the information buffer area composed of a large-capacity high-speed flash memory group is convenient for forming a local area network system. Since the TDM system is plug-in, when TDM function is needed, the corresponding TDM special module is inserted to conveniently form the TDM system. The TDM management module (TDM-MG) is attached to the on-site key phase & configuration & network communication module of the TSI instrument, and can obtain slow real-time data of the entire system from the configuration module. The TDM acquisition module (TDM-AC) is attached to the monitor module card of the TSI instrument, and directly obtains the original signal from the monitor module to buffer locally after high-speed sampling. The network communication module is installed in the on-site key phase & configuration & network communication module of the TSI instrument, the real-time data collected by the TDM special module is communicated through the local area network through the Ethernet port, and multiple TSI instrument monitor frames can be accessed at the same time, data processing is performed in the computer, and various functions of the TDM system are completed. The TDM special module uses 8 pieces of 8Mb high-speed SRAM, and the acquisition module simultaneously monitors the AC and DC components of two channels at a rate of 100KHz. The TDM management module (TDM-MG) provides two Ethernet ports for backup to send TDM transient data and steady-state data to the upper computer, and accepts the instructions sent by the computer. Specifically, as follows:

[0022] (1) TDM management module (TDM-MG): The TDM management module (TDM-MG) is attached to the on-site key phase & configuration & network communication module of the TSI instrument, and can obtain real-time data of the entire system from the configuration module.

[0023] (2) TDM acquisition module (TDM-AC): The TDM acquisition module (TDM-AC) is attached to the monitor module of the TSI instrument, directly obtains the original signal from the monitor module, and buffers locally after high-speed sampling. The TDM acquisition module has a synchronous high-speed analog quantity acquisition circuit, the sampling speed is as high as 200Ksps full channel, and the precision is 16 bits; each group of data needs to be synchronously acquired to facilitate subsequent data analysis and fast Fourier (FFT) transformation.

[0024] (3) Network communication module: each TSI instrument monitor frame is installed with a network communication module, combined in the local key phase & configuration & network communication module, a TDM-MG module is installed on the local key phase & configuration & network communication module, and a TDM-AC module is installed on each monitor module, up to 11 TDM-AC modules can be installed, through the rear bus board of the monitor case, real-time data is transmitted to the Ethernet port of the network communication module, and after being packaged through the local area network, the data is sent to the computer installed with the TDM software, each set of computer installed with the TDM software can communicate through the local area network, up to 20 TSI instrument monitor frames can be accessed at the same time, data processing is carried out in the computer, and various functions of the TDM system are completed.

[0025] (4) Installation method of pluggable TDM special module: there are two 16*2 sockets on the local key phase & configuration & network communication module of the TSI instrument, named J1, for installing the TDM module; J1 is connected with two-way synchronous keying signal, one-way RS485 bus interface and one set of 5V DC power supply; J2 of the TDM acquisition module is connected with each analog signal and the analog input of the monitor, after adjustment, the AC component and the DC component are separated into one way, and then the voltage bias of the adjustment circuit is added, a total of two sets of inputs, a total of six ways; J2 of the TDM management module leads out two sets of RJ45 interfaces, 100M / 1000M adaptive, and another set of UART interface in TTL format. Thus, the function of the TDM high-speed data acquisition part is moved forward to the monitor in the TSI instrument, and the data acquisition part of the TDM system is pluggable and installed on each monitor module of the TSI instrument, forming a pluggable TDM device; if the user needs TDM function, the TDM special module is inserted, and the TDM special module has two types, which completes the data acquisition required by the TDM system. That is, the installation method of the pluggable TDM special module is that there are two 16*2 sockets on the local key phase & configuration module of the TSI instrument, for installing the TDM management module (TDM-MG); J2 socket of the monitor module of the TSI instrument is used for installing the TDM acquisition module (TDM-AC).

[0026] (5) Information buffer: 8 pieces of 8Mb high-speed SRAM are used in the TDM module, when the acquisition module simultaneously monitors the AC and DC components of two channels at a rate of 100KHz, the buffer time reaches 10 seconds.

[0027] (6) Network communication mode: the TDM management module (TDM-MG) provides two Ethernet ports for each other as standby, which is used to send TDM data to the upper computer, and obtains the detection data cached by the TDM-AC module through the RS485 bus, and the TDM module uses a UART port to communicate with the on-site key phase & configuration & network communication module attached thereto to obtain real-time data of the entire system.

[0028] The application will be further described below in combination with the drawings and specific embodiments:

[0029] As shown in Figure 1 , it is a schematic diagram of the pluggable TDM device structure; the TSI instrument and the TDM system are integrated together, and the parameter measurement value, alarm state and unit structure diagram of the TSI instrument and the vibration analysis result (various graphs and pictures) of the TDM system can be displayed simultaneously on the PC through the switching picture mode.

[0030] As shown in Figure 2 , it is a schematic diagram of the TDM device system, wherein:

[0031] The TSI instrument monitor frame and the power supply 1, the monitor frame is used for mounting and fixing the monitor, and the internal bus plate is used for connecting each monitor, and the frame power supply provides the required power supply for each monitor.

[0032] The on-site key phase & configuration & network communication module 2 includes a key phase output module, a monitor configuration module and a network communication module, and the main functions of each module are as follows: the key phase output function: providing a synchronous key phase signal for the TDM system, and each module can provide at most four key phase signals; the monitor configuration function: configuring the monitor module in the frame to configure the universal monitor module into the required TSI parameter monitor to complete the monitoring and protection function of the TSI instrument; the network communication function: the TDM management module (TDM-MG) provides two Ethernet ports for each other as standby, which is used to send TDM data to the upper computer, and obtains the detection data cached by the TDM-AC module through the RS485 bus, and the TDM module uses a UART port to communicate with the on-site key phase & configuration & network communication module attached thereto to obtain real-time data of the entire frame system.

[0033] The monitor module 3, in addition to completing the monitoring and protection function of the general parameter monitor, transmits the received measurement parameters to the TDM special module. The TDM special module includes a signal acquisition module 4, a management module 5 and an upper computer analysis system 6.

[0034] The acquisition module 4, TDM acquisition module (TDM-AC) is attached to the monitor module of the TSI instrument, directly obtains the original parameter signal from the monitor module, and is cached locally after high-speed sampling. The TDM acquisition module has a synchronous high-speed analog quantity acquisition circuit, and the sampling speed is as high as 200Ksps full channel, and the precision is 16 bits. Each group of data needs to be synchronously acquired, so as to facilitate subsequent data analysis and fast Fourier (FFT) transformation.

[0035] The management module 5, TDM management module (TDM-MG) is attached to the on-site key phase & configuration module of the TSI instrument, and can obtain slow real-time data of the whole system from the configuration module. Meanwhile, the TDM acquisition module is provided with a synchronous signal (i.e. a key phase signal) of analog quantity acquisition, real-time transient and steady-state data transmitted from the field, which is transmitted to the acquisition module (TDM-AC) and the management module (TDM-MG) respectively installed on the on-site key phase & configuration & network communication module and the monitor module, through the on-site key phase & configuration & network communication module and the monitor module, and is calculated by the acquisition module (TDM-AC) and the management module (TDM-MG) data acquisition, data analysis, fast Fourier (FFT) transformation, etc. The data are packaged, sent to the high-speed buffer area through the bus board of the frame, and then transmitted to the upper computer analysis system 6 by the network communication module through the local area network.

[0036] The upper computer analysis system 6, the upper computer software analyzes the data obtained by the system, obtains characteristic information such as bearing vibration, rotating speed, expansion difference, axial displacement and phase on the basis of strict time domain synchronization, and provides data and various processed graphics for rotating machinery experts to analyze unit accident causes, such as trend chart, bar chart, frequency spectrum chart, shaft center trajectory & waveform chart, waterfall chart, polar coordinate chart, X-Y chart, S-V chart, wavelet chart, cascade chart, full spectrum chart and Campbell chart. The TDM system also has functions of real-time monitoring, alarm, event recording, time domain analysis, frequency analysis, trend analysis and vibration analysis.

[0037] As Figure 3As shown, TDM acquisition module (TDM-AC) signal processing diagram, real-time sensor signal through sensor signal input end 101 sent to the TSI instrument monitor, signal protection circuit 102 is mainly to limit the input signal current, voltage, to prevent excessive input voltage or current, monitor module damage, signal protection circuit 102 output connected signal isolation following circuit 103, signal isolation following circuit 103 is mainly to improve the input impedance, to reduce the impact on the input sensor signal; Signal isolation following circuit 103 output connected AC / DC separation circuit 104, TSI instrument sensor input signal is complex, there are AC signal, there are DC signals, some occasions AC signal is a small signal, there are millivolt level signal, sometimes dozens of volts of large signal; DC signal has positive voltage signal, also has negative voltage signal; There are AC signals superimposed on the DC signal, the measures taken is to separate AC and DC signals, AC and DC signals are processed by software control respectively, after the signal AC / DC separation, into two paths: AC protection circuit 105 and DC sampling circuit 106, respectively, AC protection and DC sampling circuit; Signal after AC / DC separation circuit, the AC part sent to AC protection circuit 105, the DC part sent to DC sampling circuit 106; AC protection circuit 105 and DC sampling circuit 106 output is sent to signal setting circuit one 107 and signal setting circuit two 108, adjust the appropriate signal, sent to the CPU component 109; CPU component 109 receives AC signal and DC signal, while CPU component 109 according to the size of the received AC and DC signals, adaptive output a DC signal; Signal setting circuit one 107 and signal setting circuit two 108 are connected to high-speed transient analog sampling 110, TDM acquisition module (TDM-AC) in the high-speed transient analog sampling 110 can simultaneously collect AC component, DC component and bias voltage; Data buffer area 111 is information buffer area, the signal needs to be measured after high-speed transient analog sampling, the data is packaged, the data packet is sent to the data buffer area 111; TDM special module uses 8 pieces of 8Mb high-speed SRAM, acquisition module at 100KHz rate, while monitoring two channels of AC and DC components, the cache time reaches 10 seconds; Then by network communication module, through the local area network to the host computer analysis system, host computer software analyzes the data obtained by the system; Each monitor module has four measurement channels 112, Figure 3 Only the second measurement channel is drawn, and the third and fourth measurement channels are similar.

[0038] As Figure 4As shown, it is a communication mode schematic diagram of the TDM device, a TDM management module (TDM-MG) installed on the on-site key phase & configuration & network communication module and the monitor module, has two Ethernet ports, the TDM management module provides two Ethernet ports for each other as standby, is used for sending TDM data to the host computer, the TDM module uses a UART port to obtain the slow real-time data of the whole system, a TDM acquisition module (TDM-AC) installed on the monitor module, obtains the detection data cached by the TDM-AC module through the RS485 bus inside, each TSI instrument frame can access 11 TDM acquisition modules (TDM-AC) at most, Figure 4 As shown, it is a communication mode schematic diagram of the TDM device, only the structure schematic diagram of three monitor modules is drawn.

[0039] In summary, the pluggable TDM device can realize rotating machinery vibration analysis and diagnosis (TDM), and experts of rotating machinery vibration analysis can judge the cause of the failure of rotating machinery by analyzing the graphics formed by the TDM system, then the rotating machinery with failure is repaired in a targeted manner, so that the maintenance cost is reduced.

[0040] The present application is not limited to the above-mentioned embodiments, any change, modification, substitution, combination, simplification, which does not deviate from the spirit and principle of the present application, should be an equivalent replacement, and all are included in the protection scope of the present application.

Claims

1. A pluggable TDM device, characterized by: The TSI instrument includes a TSI instrument monitor frame and power supply (1), a local key phase & configuration & network communication module (2) and a monitor module (3), and the TDM special module includes a signal acquisition module (4), a management module (5) and an upper computer analysis system (6); the signal acquisition module (4) is pluggable installed on the monitor module (3) and directly obtains original parameter signals from the monitor module (3), and after high-speed sampling, the signals are cached locally, and the signal acquisition module (4) has a synchronous high-speed analog quantity acquisition circuit; the management module (5) is pluggable installed on the local key phase & configuration & network communication module (2) and obtains real-time data of the whole system from the configuration module of the local key phase & configuration & network communication module (2); the local key phase & configuration & network communication module (2) and the monitor module (3) transmit real-time data and original parameter signals to the signal acquisition module (4) and the management module (5), after data acquisition, data analysis and fast Fourier transform by the signal acquisition module (4) and the management module (5), the data are packaged, the data packet is sent to the high-speed cache area through the bus board, and the network communication module transmits the data to the upper computer analysis system (6) through the local area network; the local key phase & configuration & network communication module (2) includes a key phase output module, a monitor configuration module and a network communication module, the key phase output module is used for providing synchronous key phase signals for the TDM system, and each module can provide four key phase signals at most; the monitor configuration module configures the monitor module in the frame, configures the general monitor module into the required TSI parameter monitor, and completes the monitoring and protection function of the TSI instrument; the management module (5) provides two Ethernet ports for each other as backup, which are used for sending TDM data to the upper computer, and the detection data cached by the signal acquisition module (4) are obtained through the RS485 bus, the management module (5) uses a UART port to communicate with the network communication module attached thereto, and obtains real-time data of the whole frame system.

2. The pluggable TDM device of claim 1, wherein: The TSI instrument monitor frame and power supply (1) include a monitor frame and a frame power supply, the monitor frame is used for monitor installation and fixation, and the bus board in the monitor frame is used for connection of various monitors, and the frame power supply provides required power supply for various monitors.

3. The pluggable TDM device of claim 1, wherein: The network communication module is installed in the local key phase & configuration & network communication module (2), and the monitor module (3) has at most eleven signal acquisition modules (4), the eleven signal acquisition modules (4) transmit the acquired real-time data to the Ethernet port of the network communication module through the rear bus board of the monitor case, the data are packaged through the local area network and sent to the computer installed with the TDM software, and data processing is carried out in the computer.

4. The pluggable TDM device of claim 1, wherein: The signal acquisition module (4) comprises a sensor signal input end (101), a signal protection circuit (102), a signal isolation and following circuit (103), an AC / DC separation circuit (104), an AC protection circuit (105), a DC sampling circuit (106), a signal setting circuit I (107), a signal setting circuit II (108), a CPU component (109), and a high-speed transient analog-digital sampling (110). The sensor signal input end (101) sends real-time signals of on-site sensors into the signal protection circuit (102). The signal protection circuit (102) limits the current and voltage of the input signals. The output end of the signal protection circuit (102) is connected with the signal isolation and following circuit (103). The signal isolation and following circuit (103) is used for impedance matching and improving input impedance. The output end of the signal isolation and following circuit (103) is connected with the AC / DC separation circuit (104). The AC / DC separation circuit (104) separates the signals into the AC protection circuit (105) and the DC sampling circuit (106) after separating the AC and DC signals. The output of the AC protection circuit (105) and the DC sampling circuit (106) is sent to the signal setting circuit I (107) and the signal setting circuit II (108) respectively. After being adjusted by the signal setting circuit I (107) and the signal setting circuit II (108) to appropriate signals, the signals are sent into the CPU component (109). The CPU component (109) receives the AC signals and the DC signals, and simultaneously outputs a DC signal according to the size of the received AC and DC signals. The signal setting circuit I (107) and the signal setting circuit II (108) are connected with the high-speed transient analog-digital sampling (110) respectively. The high-speed transient analog-digital sampling (110) simultaneously collects the AC component, the DC component and the bias voltage, and performs packet processing on the data. The data packet is sent to the data buffer area (111).

5. The pluggable TDM device of claim 1, wherein: The host computer software in the host computer analysis system (6) analyzes the data obtained by the system. On the basis of strict time domain synchronization, the characteristic information containing but not limited to bearing vibration, rotating speed, expansion difference, axial displacement and phase is obtained, and data and various processed graphics are provided.

6. A method of installing a pluggable TDM device as claimed in any one of claims 1 to 5, characterized by: The TSI instrument is provided with a J1 socket on a local key phase & configuration & network communication module (2) for installing a management module (5). The TSI instrument is provided with a J2 socket on a monitor module (3) for installing a signal acquisition module (4). The J1 socket is connected with two-way synchronous keying signals, one-way RS485 bus interface and one set of 5V DC power supply. The J2 socket is connected with various analog signals. The analog input of the monitor module (3) is separated into one-way AC component and one-way DC component after being adjusted. In addition, the voltage bias of the adjusting circuit is two sets of input. The J2 socket of the management module (5) leads out two sets of RJ45 interfaces and one set of UART interface in TTL format.

7. The method of installing a pluggable TDM device of claim 6, wherein: The communication mode of the on-site key phase & configuration & network communication module (2) is that the management module (5) installed on the on-site key phase & configuration & network communication module (2) is provided with two Ethernet ports, the management module (5) provides two Ethernet ports for each other as standby to send TDM data to the upper computer, and uses a UART port to obtain slow real-time data of the whole system; the signal acquisition module (4) installed on the monitor module (3) obtains the buffered detection data through the RS485 bus inside, and each TSI instrument frame can be connected with eleven signal acquisition modules (4) at most.

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