CN115800551A - Remote monitoring system and method for explosion-proof distribution box - Google Patents
Remote monitoring system and method for explosion-proof distribution box Download PDFInfo
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- CN115800551A CN115800551A CN202211713499.1A CN202211713499A CN115800551A CN 115800551 A CN115800551 A CN 115800551A CN 202211713499 A CN202211713499 A CN 202211713499A CN 115800551 A CN115800551 A CN 115800551A
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Abstract
The invention provides a remote monitoring system and method for an explosion-proof distribution box. The system comprises: the system comprises a multi-path electronic leakage protector, a temperature and humidity transmitter, an industrial controller and a remote interaction terminal; the multi-path electronic leakage protector and the temperature and humidity transmitter are used for acquiring a current value and a voltage value of a wiring terminal inside the explosion-proof distribution box and a temperature and humidity value inside the explosion-proof distribution box; the industrial controller is used for receiving data and sending the data to the remote interactive terminal; the remote interactive terminal is used for displaying and processing the received data and giving an alarm when the received data exceeds a set threshold range. The invention realizes remote monitoring of the explosion-proof distribution box, does not need to open the explosion-proof distribution box, and is beneficial to ensuring good sealing effect of the explosion-proof distribution box, thereby improving monitoring efficiency and accuracy.
Description
Technical Field
The invention relates to the technical field of intelligent monitoring, in particular to a remote monitoring system and method for an explosion-proof distribution box.
Background
An explosion-proof distribution box is a complete set of equipment for intensively installing switches, instruments and the like, is important distribution equipment for preventing explosion of an installation site caused by factors such as sparks, electric arcs, high temperature and the like, becomes an indispensable distribution facility in flammable and explosive places along with the development of the fields such as petrochemical industry, wind power generation and the like, and has a focus of attention on safe operation.
On one hand, however, the explosion-proof distribution box is not absolutely sealed in the design and manufacturing process, so that the sealing performance to water vapor is not sufficient, the problem of water inflow in rainy seasons exists, the phenomenon of condensation and even water accumulation on the surface of electrical equipment can be caused, and the service life of a device can be reduced due to the influence of chemical corrosion, salt mist and other special factors; on the other hand, a large number of wiring terminals exist in the explosion-proof distribution box, and the wiring terminals may be loosened and connected in a virtual mode, so that the stability of electric contact is poor; in actual operation, due to overload of load and insufficient heat dissipation, the temperature of a wiring terminal is too high, so that the terminal block is extremely easy to overheat, and further, the wiring parts such as a zero line are overheated and blown, and the performance stability, the action reliability and the metering accuracy of the protector are affected; if the load is not reduced and the heat dissipation is increased in time, the equipment can be overheated to trip or even burn out seriously;
in view of the above-mentioned problem, need carry out periodic inspection to explosion-proof block terminal, open explosion-proof box among the prior art usually during the manual work is patrolled and examined, detect each internal device and binding post's state, but this kind of detection mode is timely accurate, inefficiency inadequately.
Disclosure of Invention
The embodiment of the invention provides a remote monitoring system and method for an explosion-proof distribution box, and aims to solve the problems that a great deal of energy is required and danger exists when the explosion-proof distribution box is opened for monitoring.
In a first aspect, an embodiment of the present invention provides a remote monitoring system for an explosion-proof distribution box, including: the electronic leakage protector is arranged in the explosion-proof distribution box and is used for collecting the current value and the voltage value of each wiring terminal in the explosion-proof distribution box;
the temperature and humidity transmitter is arranged in the explosion-proof distribution box and used for acquiring the temperature and humidity value in the explosion-proof distribution box;
the industrial control machine is arranged in the explosion-proof distribution box, is connected with the multi-path electronic leakage protector and the temperature and humidity transmitter, and is used for receiving and sending information acquired by the multi-path electronic leakage protector and information acquired by the temperature and humidity transmitter, receiving a control instruction and executing a protection action;
and the remote interactive terminal is used for remotely receiving the information sent by the industrial control machine and providing an information display interface, and the information display interface displays a flow type oscillogram generated based on the current value and the voltage value of each wiring terminal in the explosion-proof distribution box, a temperature flow type oscillogram and a humidity flow type oscillogram generated based on the temperature and humidity value in the explosion-proof distribution box and gives an alarm when the current value and the voltage value of each wiring terminal in the explosion-proof distribution box exceed a preset threshold value.
In a possible implementation manner, the electronic leakage protector is provided with a communication option based on a Modbus communication protocol, the temperature and humidity transmitter supports information transmission based on the Modbus communication protocol, and the industrial controller is connected with each path of leakage protector through the Modbus communication protocol to realize bidirectional information exchange with the leakage protector;
and the industrial controller is in information transmission with the remote interactive terminal based on a WiFi or 5G network. 3. The remote monitoring system for an explosion-proof electrical box of claim 1, wherein said industrial controller is comprised of a core board, a backplane and an interface, wherein said core board employs a chip of Cortex-A8 kernel; the interfaces include multiple 232/485 interfaces, a power interface and multiple Ethernet interfaces.
In one possible implementation, the industrial controller and the remote interactive terminal comprise directional antennas;
the directional antenna is a directional slot antenna adopting a dielectric coating.
In one possible implementation, the industrial controller further includes a housing;
the set area of the shell is made of materials with shielding effect, wherein the range of the set area is obtained by frequency hopping anti-interference technology.
In a second aspect, an embodiment of the present invention provides a remote monitoring method for an explosion-proof distribution box, where the remote monitoring method includes:
the industrial control machine receives the current value and the voltage value of each wiring terminal in the explosion-proof distribution box and the temperature and humidity value in the explosion-proof distribution box; the industrial controller sends the received data to the remote interactive terminal; the remote interactive terminal processes the received data through a preset neural network model to obtain a voltage threshold value of the current environment and generate a corresponding oscillogram; alarming when the voltage threshold exceeds a preset threshold; and meanwhile, the industrial controller receives a control instruction of the remote end interactive terminal and controls the explosion-proof distribution box to enter a protection state.
In one possible implementation, the industrial controller is provided with a single data acquisition mode;
under the single data acquisition mode, when the temperature and humidity transmitter does not transmit the temperature and humidity value, a confirmation character is sent out, and a serial clock line is pulled down; and when the temperature and humidity value exists in the temperature and humidity transmitter, the serial clock line is released, and the acquired temperature and humidity value is sent to the industrial controller.
In one possible implementation, the industrial controller is provided with a periodic data acquisition mode;
judging whether the temperature and humidity transmitter transmits temperature and humidity data or not in the periodic data acquisition mode, wherein the temperature and humidity data are transmitted by starting through a data command sent by the temperature and humidity transmitter; if the temperature and humidity value is not transmitted, the temperature and humidity transmitter sends a periodic data acquisition instruction; and meanwhile, the collected temperature and humidity values are sent to the industrial controller.
In one possible implementation manner, the remotely receiving the information sent by the industrial control machine includes:
receiving a wireless communication signal;
performing wavelet transformation processing on the wireless communication signals to obtain first wavelet transformation coefficients of the wireless communication signals with different noise scales; denoising the first wavelet transformation coefficient with the noise scale meeting the preset condition to obtain a second wavelet transformation coefficient;
performing wavelet inverse transformation processing based on the second wavelet transformation coefficient to obtain a de-noised signal of the wireless communication signal;
determining a signal which accords with a non-zero cycle frequency standard as an interference signal and determining a signal which does not accord with the non-zero cycle frequency standard as a data signal aiming at the de-noised signal;
analyzing the data signals to obtain the current value and the voltage value of each wiring terminal in the explosion-proof distribution box and the temperature and humidity value in the explosion-proof distribution box;
in one possible implementation, determining a signal conforming to a non-zero cycle frequency standard as an interference signal includes:
and acquiring the characteristics of the interference signal, determining an interference signal source at the industrial controller end based on the characteristics of the interference signal, and determining an anti-interference area of the industrial controller according to the interference signal source.
The embodiment of the invention provides a remote monitoring system and a remote monitoring method for an explosion-proof distribution box, which have the beneficial effects that: the remote monitoring system of the explosion-proof distribution box is designed, and a current value and a voltage value of a wiring terminal in the explosion-proof distribution box and a temperature and humidity value in the explosion-proof distribution box are acquired by using a multi-path electronic leakage protector and a temperature and humidity transmitter; receiving data by adopting an industrial control machine and sending the data to a remote interactive terminal; the remote interactive terminal displays and processes the received data; when the received data exceeds a set threshold range, alarming; therefore, the remote monitoring of the explosion-proof distribution box is realized, the explosion-proof distribution box does not need to be opened, and the good sealing effect of the explosion-proof distribution box is favorably ensured, so that the monitoring efficiency and the accuracy are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a remote monitoring system for an explosion-proof distribution box according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method of a remote monitoring system for an explosion-proof distribution box according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description is made by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a remote monitoring system for an explosion-proof distribution box according to an embodiment of the present invention; a remote monitering system for explosion-proof block terminal, remote monitering system includes:
the multi-path electronic leakage protector 110 is arranged in the explosion-proof distribution box 10 and is used for acquiring the current value and the voltage value of each wiring terminal in the explosion-proof distribution box 10;
the temperature and humidity transmitter 120 is arranged in the explosion-proof distribution box 10 and is used for acquiring the temperature and humidity value in the explosion-proof distribution box 10;
the industrial control machine 130 is arranged in the explosion-proof distribution box 10, is connected with the multi-path electronic leakage protector 110 and the temperature and humidity transmitter 120, and is used for receiving and sending information acquired by the multi-path electronic leakage protector 110 and information acquired by the temperature and humidity transmitter 120, receiving control instructions and executing protection actions;
and the far-end interactive terminal 140 is used for remotely receiving information sent by the industrial control machine and providing an information display interface, wherein the information display interface displays a flow type waveform diagram generated based on the current value and the voltage value of each wiring terminal in the explosion-proof distribution box 10, a temperature flow type waveform diagram and a humidity flow type waveform diagram generated based on the temperature and humidity value in the explosion-proof distribution box 10 and alarms when the current value and the voltage value of each wiring terminal in the explosion-proof distribution box 10 exceed a preset threshold value.
In this embodiment, multichannel electronic type earth-leakage protector 110 selects the preferred NJL2 earth-leakage protector, realizes wireless electrical condition monitoring fast, and the electric energy is measured, and the digital demands such as circuit breaker life-span prediction have newly increased integral type electron earth-leakage protection circuit breaker simultaneously, and the requirement of intelligent detection and control can be satisfied completely to the hot magnetic circuit breaker of heavy current, brand-new kinds such as exchange 1000V circuit breaker.
In this embodiment, the temperature transmitter 120 adopts a high-precision temperature and humidity sensor integrating temperature and humidity, and adopts a latest high-precision digital temperature and humidity sensor (SHT 30) of sensrion, switzerland, which has high sensitivity, good stability, and full-range automatic temperature compensation.
In the present embodiment, low power consumption design and maximum power output are achieved. By using the high-performance low-power processor and the monitoring device and combining an intelligent algorithm integrating monitoring, monitoring and controlling, the low-power operation of the intelligent and real-time explosion-proof distribution box management system is stably realized, the operation efficiency is improved, and energy and funds are saved.
In a possible implementation manner, the multiple electronic leakage protectors 110 are configured with communication options based on a Modbus communication protocol, the temperature and humidity transmitter 120 supports information transmission based on the Modbus communication protocol, and the industrial controller 130 is connected to each of the leakage protectors 110 through the Modbus communication protocol to implement bidirectional information exchange with the leakage protectors;
the industrial control machine 130 performs information transmission with the remote interactive terminal 140 based on the WiFi or 5G network.
In this embodiment, regarding the communication between the leakage protector and the industrial controller, the industrial controller 130 will connect each leakage protector via Modbus communication protocol, and implement the bidirectional exchange of information between the industrial controller and the protector: the leakage protector transmits information such as electrical state monitoring, electric energy measurement, circuit breaker service life prediction and the like to the controller through the Modbus protocol, and transmits an instruction of the remote control system from the controller to the leakage protector through the Modbus protocol, so that the intelligent detection and control requirements of the system are met.
In this embodiment, about reading the data flow of humiture, output signal is digital signal, can conveniently network with computer lab monitoring host computer or other industrial computers, and the humiture value can be read out through RS485 in real time, has characteristics such as accurate, stable, long service life. The temperature and humidity transmitter uses a standard RS485 output communication interface, and adds a self-recovery fuse, so that the stability of the temperature and humidity transmitter can be enhanced, long-distance communication can be realized, and a standard Modbus communication protocol widely applied to the industrial field is used; the built-in switching power supply circuit has wide input voltage range and high conversion efficiency and can continuously work for a long time.
In this embodiment, a USR-C322WiFi module is adopted, which is an ultra-low power consumption WiFi module of TI company, the standby current is as low as 3.5mA, and the standby current is as low as 25 μ a during deep sleep, so as to meet the ultra-low power consumption design requirement. The WiFi module is used as a Wireless Access Point (AP) so that an upper computer can Access the module to transmit data without any configuration.
In this embodiment, socket transparent transmission, http Client, and Websocket communication correspond to the WiFi module serial port. The wireless transmission function is realized by a WIFI/4G router and an antenna with amplified power, and the router can simultaneously support two communication modes of WIFI and 4G, so that the communication modes can be flexibly selected on site according to the distribution characteristics and strength of signals. Meanwhile, the router is also required to be compatible with 485 interfaces so as to be convenient for connecting with an industrial controller and other equipment. In addition, the router also adopts an aluminum shell to ensure the stability of system communication in the explosion-proof box.
In one possible implementation, the industrial control machine 130 includes a core board and a plurality of interfaces; the core board adopts a Cortex-A8 core chip; the plurality of interfaces include a plurality of 232/485 interfaces, a power interface, and a plurality of ethernet interfaces.
In this embodiment, the industrial controller 130 is connected to the multi-path earth-leakage protector 110, the humidity sensor, and the temperature sensor, and is responsible for the detection, the instruction, and the protection signal transmission and reception, which is the core of the entire intelligent system. In addition, the industrial controller 130 is required to have performance characteristics of high reliability, low power consumption and the like when operating in the explosion-proof distribution box 10 for a long time.
In one possible implementation, the industrial control machine 130 is configured with a directional antenna;
the directional antenna is a directional slot antenna adopting a dielectric coating.
In this embodiment, the directional antenna to be selected according to the embodiment of the present invention is an antenna that is particularly strong in transmitting and receiving electromagnetic waves in one or more specific directions, and is null or extremely small in transmitting and receiving electromagnetic waves in other directions. Directional antennas, in the horizontal pattern, exhibit a range of angles of radiation, known as directivity. As with an omni-directional antenna, the smaller the lobe width, the greater the gain. The directional antenna is generally applied to the environment with long communication distance, small coverage area and high frequency utilization rate in a communication system, and the effective utilization rate of the radiation power can be increased and the confidentiality is increased by adopting the directional transmitting antenna, so that the signal strength and the anti-interference capability are enhanced.
In one possible implementation, the industrial control machine 130 further includes a housing;
the shell is provided with an anti-interference area, and the anti-interference area is made of aluminum materials.
In this embodiment, the embodiment of the present invention selects a method based on wavelet transform, eliminates noise signals in a wireless communication network, detects interference signals, establishes mathematical models and channel models of different interference signals, obtains time-frequency distribution characteristics of interference signals under the influence of noise, and utilizes different characteristics of noise and signals under wavelet transform to realize signal-to-noise separation and noise removal, thereby improving the detection effect of interference signals. After the interference signal is detected, a proper area is selected in the direction with more interference signals according to the angle and the strength of the interference signal, the signal with better shielding effect such as an aluminum material is used, the shell is made of the aluminum material, the corrosion resistance and the electromagnetic shielding property are better, and the high-reliability operation of an industrial control machine in a complex environment is guaranteed.
In summary, the embodiment of the invention designs a remote monitoring system of an explosion-proof distribution box, and a multipath electronic leakage protector and a temperature and humidity transmitter are used for collecting a current value and a voltage value of a wiring terminal inside the explosion-proof distribution box and a temperature and humidity value inside the explosion-proof distribution box; receiving data by adopting an industrial control machine and sending the data to a remote interactive terminal; the remote interactive terminal displays and processes the received data; when the received data exceeds a set threshold range, alarming; therefore, the explosion-proof distribution box can be monitored without opening the explosion-proof distribution box, the good sealing effect of the explosion-proof distribution box is guaranteed, and the monitoring efficiency and the accuracy are improved.
The embodiment of the invention also provides a remote monitoring method for the explosion-proof distribution box, which specifically comprises the following steps of:
s201: the industrial control machine 130 receives the current value and the voltage value of each terminal in the explosion-proof distribution box 10 collected by the multi-path electronic leakage protector 110, and the temperature and humidity value in the explosion-proof distribution box 10 collected by the temperature and humidity transmitter 120,
s202: the industrial controller 130 sends the received current value, voltage value and temperature and humidity value to the remote interactive terminal 140;
s203: the far-end interactive terminal 140 generates a streaming waveform diagram based on the current value and the voltage value, and generates a temperature streaming waveform diagram and a humidity streaming waveform diagram based on the temperature and humidity values;
s204: the far-end interactive terminal 140 compares the current value and the voltage value with a preset threshold range, and generates a control instruction to send to the industrial controller 130 when the current value and the voltage value exceed the preset threshold range;
s205: the industrial controller 130 controls the multi-channel electronic leakage protector 110 to perform the set protection operation based on the control command.
In this embodiment, in order to master the inside operational environment of explosion-proof block terminal in real time, adopt virtual instrument technique, developed the electrical equipment detecting system based on LabVIEW, focus carries out on-line monitoring to leakage value, humidity, the temperature of leakage protector, adopts wiFi data transmission mode to solve the short problem of traditional environmental monitoring distance. According to the results of the reference research, the following experiments show that: the LabVIEW system effectively and accurately reflects the change of the internal environment of the outdoor electrical equipment, completes the storage of online monitoring data and has certain application value. Three block diagrams are added in the front panel: the flow type oscillogram, the temperature flow type oscillogram and the humidity flow type oscillogram of the leakage protector respectively receive three data from an industrial controller and are firstly displayed in a time domain mode.
In the embodiment, display graphics are realized, rich charts and databases are built in, and data visualization is realized. When the control terminal information is uploaded to the Ali cloud platform, a user can remotely receive monitoring data in real time through a graphical display interface, model intellectualization and twin are achieved, a digital twin scene is constructed, and risk assessment, simulation verification and data prediction are achieved. The system compares the temperature and humidity and the electric parameter data in real time, the system can immediately judge the current situation when the data are abnormal, and once the internal operation situation of the explosion-proof distribution box is determined to be abnormal, an alarm signal is sent out, and the user side timely receives a prompt to improve the system safety. In addition, cross-device cooperation is realized by utilizing various terminal remote control pages, and the more diversified scene requirements of users are met.
In one possible implementation, the industrial controller is provided with a single data acquisition mode;
in the single data acquisition mode, when the temperature and humidity transmitter 120 does not transmit the temperature and humidity value, a confirmation character is sent out, and the serial clock line is pulled down; when the temperature and humidity value exists in the temperature and humidity transmitter 120, the serial clock line is released, and the acquired temperature and humidity value is transmitted to the industrial controller 130.
In one possible implementation, the industrial controller is provided with a periodic data acquisition mode;
in the periodic data acquisition mode, whether the temperature and humidity transmitter 120 transmits temperature and humidity data is judged, wherein the transmission of the temperature and humidity value is started by acquiring a data command sent by the temperature and humidity transmitter 120; if the temperature and humidity value is not transmitted, the temperature and humidity transmitter 120 sends a periodic data acquisition instruction; and simultaneously sends the collected temperature and humidity values to the industrial controller 130.
In this embodiment, the industrial controller issues START and issues the address of I2C (7 bits) + read (1)/write (0) flag bits, and then waits for ACK for SHT 30. A command high 8 bits data is issued, waiting for an ACK for SHT 30. Issues a command low 8 bits of data and waits for an ACK for SHT 30. The industrial control machine sends a STOP to STOP communication. The industrial controller sends a START and sends an address of I2C (7 bits) + read (1)/write (0) flag bits, and then waits for an ACK for SHT 30. The sensor will receive the read head's reception and send two bytes of data (temperature) followed by one byte of CRC check. The sensor sends two bytes of data (relative humidity) followed by one byte of CRC check. Communication between different monitoring terminals based on combination of a Modbus protocol and RS-485 is achieved.
In one possible implementation, the receiving information sent by the industrial control machine remotely includes:
receiving a wireless communication signal; performing wavelet transformation processing on the wireless communication signals to obtain first wavelet transformation coefficients of different noise scales of the wireless communication signals; denoising the first wavelet transformation coefficient with the noise scale meeting the preset condition to obtain a second wavelet transformation coefficient; performing wavelet inverse transformation processing based on the second wavelet transformation coefficient to obtain a de-noised signal of the wireless communication signal; determining a signal which accords with a non-zero cycle frequency standard as an interference signal and determining a signal which does not accord with the non-zero cycle frequency standard as a data signal aiming at the de-noised signal; and analyzing the data signals to obtain the current value and the voltage value of each wiring terminal in the explosion-proof distribution box and the temperature and humidity value in the explosion-proof distribution box.
In this embodiment, the remote interactive terminal receives the wireless communication signal transmitted by the industrial controller, and performs wavelet transformation processing on the wireless communication signal to obtain a wavelet coefficient Hi; for a transformation coefficient H with the scale of i =1, the propagation characteristics of the transformation coefficient H are used to complete searching, points satisfying noise characteristics are obtained, meanwhile, the coefficients of the points are set to be equal to 0, the coefficients of other points are not changed, and a new coefficient is generated and still expressed as H 1 (ii) a Projecting various types of noise on different wavelet spaces, and calculating new variance of the noises:
wherein, the first and the second end of the pipe are connected with each other,
performing projection on different wavelet spaces for various types of noise to obtain variance values;
is the wavelet coefficient with the scale j.
Setting the expression of threshold denoising as follows:
wherein, the first and the second end of the pipe are connected with each other,
a new wavelet transformation coefficient is obtained after threshold denoising;
is the wavelet coefficient with the scale i;
is a set threshold.
Using the expression of threshold de-noising to complete the threshold processing of the wavelet coefficient and obtain a new wavelet transformation coefficient
(ii) a Completing wavelet inverse transformation to obtain a final denoised interference signal; after obtaining an interference signal without noise influence, judging whether a wireless communication network signal has a non-zero cycle frequency standard or not by taking the chaos cycle spectrum theory as a basis, and if so, judging the wireless communication network signal as the interference signal. Determining a signal which accords with a non-zero cycle frequency standard as an interference signal and determining a signal which does not accord with the non-zero cycle frequency standard as a data signal aiming at the de-noised signal; analyzing the data signal to obtainAnd obtaining the current value and the voltage value of each wiring terminal in the explosion-proof distribution box and the temperature and humidity value in the explosion-proof distribution box.
In one possible implementation, determining a signal conforming to a non-zero cycle frequency standard as an interference signal includes: the method comprises the steps of obtaining the characteristics of interference signals, determining the source of the interference signals at an industrial controller terminal based on the characteristics of the interference signals, and determining the anti-interference area of the industrial controller according to the source of the interference signals.
In this embodiment, the embodiment of the present invention selects a method based on wavelet transform, eliminates noise signals in a wireless communication network, detects interference signals, establishes mathematical models and channel models of different interference signals, obtains time-frequency distribution characteristics of interference signals under the influence of noise, and utilizes different characteristics of noise and signals under wavelet transform to realize signal-to-noise separation and noise removal, thereby improving the detection effect of interference signals. After the interference signal is detected, a proper area is selected in the direction with more interference signals according to the angle and the strength of the interference signal, the signal with better shielding effect such as an aluminum material is used, the shell is made of the aluminum material, the corrosion resistance and the electromagnetic shielding property are better, and the high-reliability operation of an industrial control machine in a complex environment is guaranteed.
In this embodiment, the far-end interactive terminal compares the current value and the voltage value with a preset threshold range. In the multilayer sensing structure, input layer neurons receive input signals, each neuron of the hidden layer and the output layer is connected with all neurons of the adjacent layer, and the neurons of the same layer are not connected.
Wherein the content of the first and second substances,
is in a multi-layer sensing structureFirst, the
Layer one
The input values of the individual neurons are determined,
is the bias value for that neuron,
the neuron is related to the first
First, the
The connection weight of each neuron is calculated,
is the output value of the neuron and is,
is the chosen excitation function.
Unlike conventional neural networks, the neurons in each layer of a convolutional neural network are 3-dimensionally arranged: width, height and depth. The width and height are well understood because convolution is a two-dimensional template, but depth in a convolutional neural network refers to the third dimension of the activation data volume, rather than the depth of the entire network, which refers to the number of layers in the network. We will see that the neurons in a layer will only connect to a small area in the previous layer, rather than taking a full connection. The spatial size of this junction is called the receptive field of the neuron. In the depth direction, the size of this connection is always equal to the depth of the input quantity.
And (3) performing image segmentation on the leakage signal after the characteristic extraction is finished, processing the leakage signal into a 3 x 128 matrix as an input layer of the convolutional neural network, namely a three-dimensional neuron, keeping the original format of the image, performing characteristic extraction on the convolutional layer, scanning a convolutional kernel on the input characteristic diagram when convolution operation is performed, performing element multiplication on elements in a receptive field range and elements on the characteristic diagram, then performing summation and superposition on an offset value, and obtaining corresponding elements on the output characteristic diagram.
Usually, a pooling layer is periodically inserted between successive convolutional layers, gradually reducing the spatial size of the data volume, reducing the number of parameters in the network, reducing the computational resource consumption, and effectively controlling the overfitting. The convergence layer operates independently on each depth slice of the input data volume, changing the spatial dimensions.
And activating the characteristic diagram through the ReLu function activation function to output the activation state of the neuron. For the ReLu function, if the input is greater than 0, the output is equal to the input, otherwise the output is 0. The mathematical expression is as follows:
the derivative is:
wherein z is an input value of the ReLu function.
In consideration of the complex characteristics of the leakage signal, the normalization layer adopts an example normalization mode to reserve the unique characteristics of each example. In the fully connected layer, the 'distributed feature representation' learned by the previous layer is mapped into a sample space, the 'distributed feature representation' is a tiled structure, the original feature map is unfolded into a feature vector and loses the spatial structure, and the features obtained by the previous layer are subjected to nonlinear combination to obtain output. And finally, converting the output value into a probability value by the output layer by using a logical function or a normalized exponential function (softmax) and finally outputting the probability value to the outside to obtain the voltage value under the current environment.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A remote monitoring system for an explosion-proof distribution box, the remote monitoring system comprising:
the electronic leakage protector is arranged in the explosion-proof distribution box and is used for collecting the current value and the voltage value of each wiring terminal in the explosion-proof distribution box;
the temperature and humidity transmitter is arranged in the explosion-proof distribution box and used for acquiring the temperature and humidity value in the explosion-proof distribution box;
the industrial control machine is arranged in the explosion-proof distribution box, is connected with the multi-path electronic leakage protector and the temperature and humidity transmitter, and is used for receiving and sending information acquired by the multi-path electronic leakage protector and information acquired by the temperature and humidity transmitter, receiving a control instruction and executing a protection action;
and the remote interactive terminal is used for remotely receiving the information sent by the industrial control machine and providing an information display interface, and the information display interface displays a flow type oscillogram generated based on the current value and the voltage value of each wiring terminal in the explosion-proof distribution box, a temperature flow type oscillogram and a humidity flow type oscillogram generated based on the temperature and humidity value in the explosion-proof distribution box and gives an alarm when the current value and the voltage value of each wiring terminal in the explosion-proof distribution box exceed a preset threshold value.
2. The remote monitoring system for the explosion-proof distribution box according to claim 1, wherein the electronic leakage protector is provided with a communication option based on a Modbus communication protocol, the temperature and humidity transmitter supports information transmission based on the Modbus communication protocol, and the industrial controller is connected with each leakage protector through the Modbus communication protocol to realize bidirectional information exchange with the leakage protector;
and the industrial controller is in information transmission with the remote interactive terminal based on a WiFi or 5G network.
3. The remote monitoring system for an explosion-proof power distribution box of claim 1, wherein the industrial controller includes a core board and a plurality of interfaces; the core board adopts a Cortex-A8 core chip; the plurality of interfaces comprise a plurality of 232/485 interfaces, a power supply interface and a plurality of Ethernet interfaces.
4. The remote monitoring system for an explosion-proof distribution box according to any one of claims 1 to 3, wherein the industrial controller is provided with a directional antenna;
the directional antenna is a directional slot antenna adopting a dielectric coating layer.
5. The remote monitoring system for an explosion-proof electrical box of claim 4, wherein the industrial controller further comprises a housing;
the shell is provided with an anti-interference area, and the anti-interference area is made of aluminum materials.
6. A remote monitoring method for an explosion-proof distribution box is characterized by being applied to the remote monitoring system according to any one of claims 1 to 5;
the remote monitoring method comprises the following steps:
the industrial control machine receives the current value and the voltage value of each wiring terminal in the explosion-proof distribution box collected by the multi-path electronic leakage protector and the temperature and humidity value in the explosion-proof distribution box collected by the temperature and humidity transmitter, and sends the received current value and voltage value and the received temperature and humidity value to the remote interactive terminal;
the remote interactive terminal remotely receives the information sent by the industrial controller to obtain the current value, the voltage value and the temperature and humidity value; generating a flow type waveform chart based on the current value and the voltage value, and generating a temperature flow type waveform chart and a humidity flow type waveform chart based on the temperature and humidity value;
the far-end interactive terminal compares the current value and the voltage value with a preset threshold range, and generates a control instruction to be sent to the industrial controller when the current value and the voltage value exceed the preset threshold range;
and the industrial controller controls the multi-path electronic leakage protector to execute the set protection action based on the control instruction.
7. The remote monitoring method for the explosion-proof distribution box according to claim 6, wherein the industrial control machine is provided with a single data acquisition mode;
under the single data acquisition mode, when the temperature and humidity transmitter does not transmit the temperature and humidity value, a confirmation character is sent out, and a serial clock line is pulled down; and when the temperature and humidity value exists in the temperature and humidity transmitter, the serial clock line is released, and the acquired temperature and humidity value is sent to the industrial controller.
8. The remote monitoring method for the explosion-proof distribution box according to claim 6, wherein the industrial controller is provided with a periodic data acquisition mode;
judging whether the temperature and humidity transmitter transmits temperature and humidity data or not in the periodic data acquisition mode, wherein the temperature and humidity data are transmitted by starting through a data command sent by the temperature and humidity transmitter; if the temperature and humidity value is not transmitted, the temperature and humidity transmitter sends a periodic data acquisition instruction; and meanwhile, the collected temperature and humidity values are sent to the industrial controller.
9. The remote monitoring method for the explosion-proof distribution box according to claim 6, wherein the remote receiving of the information sent by the industrial controller comprises:
receiving a wireless communication signal;
performing wavelet transformation processing on the wireless communication signals to obtain first wavelet transformation coefficients of the wireless communication signals with different noise scales; denoising the first wavelet transformation coefficient with the noise scale meeting the preset condition to obtain a second wavelet transformation coefficient;
performing wavelet inverse transformation processing based on the second wavelet transformation coefficient to obtain a de-noised signal of the wireless communication signal;
determining a signal which accords with a non-zero cycle frequency standard as an interference signal and determining a signal which does not accord with the non-zero cycle frequency standard as a data signal aiming at the de-noised signal;
and analyzing the data signals to obtain the current value and the voltage value of each wiring terminal in the explosion-proof distribution box and the temperature and humidity value in the explosion-proof distribution box.
10. The remote monitoring method for an explosion-proof electrical box of claim 9, wherein determining a signal that meets a non-zero cycle frequency standard as an interference signal comprises:
and acquiring the characteristics of the interference signal, determining an interference signal source at the industrial controller end based on the characteristics of the interference signal, and determining an anti-interference area of the industrial controller according to the interference signal source.
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| CN202211713499.1A CN115800551A (en) | 2022-12-30 | 2022-12-30 | Remote monitoring system and method for explosion-proof distribution box |
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| CN202211713499.1A CN115800551A (en) | 2022-12-30 | 2022-12-30 | Remote monitoring system and method for explosion-proof distribution box |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116846085A (en) * | 2023-09-04 | 2023-10-03 | 山西绿柳科技有限公司 | Self-sensing monitoring intelligent distribution box control system |
| CN117743659A (en) * | 2024-02-21 | 2024-03-22 | 上海幕库科技发展有限公司 | Machine room monitoring method and system integrating power, environment and security monitoring |
| CN117743659B (en) * | 2024-02-21 | 2024-05-03 | 上海幕库科技发展有限公司 | Machine room monitoring method and system integrating power, environment and security monitoring |
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2022
- 2022-12-30 CN CN202211713499.1A patent/CN115800551A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116846085A (en) * | 2023-09-04 | 2023-10-03 | 山西绿柳科技有限公司 | Self-sensing monitoring intelligent distribution box control system |
| CN117743659A (en) * | 2024-02-21 | 2024-03-22 | 上海幕库科技发展有限公司 | Machine room monitoring method and system integrating power, environment and security monitoring |
| CN117743659B (en) * | 2024-02-21 | 2024-05-03 | 上海幕库科技发展有限公司 | Machine room monitoring method and system integrating power, environment and security monitoring |
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