CN218276203U - Substation equipment data acquisition device - Google Patents
Substation equipment data acquisition device Download PDFInfo
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- CN218276203U CN218276203U CN202222658729.0U CN202222658729U CN218276203U CN 218276203 U CN218276203 U CN 218276203U CN 202222658729 U CN202222658729 U CN 202222658729U CN 218276203 U CN218276203 U CN 218276203U
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Abstract
The utility model provides a substation equipment data acquisition device relates to data acquisition technical field. The device adopts isolated power supply, has high reliability and strong ESD electrostatic protection, supports various communication protocols, and realizes the functions of information transmission, integration, editing, management and equipment monitoring between automatic equipment such as microcomputer protection, measurement and control devices, intelligent instruments, direct current screens and the like and a main station system. The method can be used for directly collecting relevant data of field devices in a small-sized automation system and transmitting the relevant data to a terminal management system through a specified communication protocol and a communication medium (Ethernet, RS232/485 and the like) so as to complete monitoring of the whole field. Meanwhile, the system can also be used as a functional substation and a spacer layer in a medium-large system, and classification and directional transmission of data are realized through layer-by-layer concatenation.
Description
Technical Field
The utility model relates to a data acquisition technical field particularly, relates to a substation equipment data acquisition device.
Background
Along with the rapid development of the economy of China, the social demand on energy is more and more vigorous, electric power serves as secondary clean energy and plays an important role in the development of the economy of China, and the safe operation of power transformation equipment is an important link for guaranteeing the reliability and safety of power supply. The online monitoring of the power transformation equipment is an effective measure for analyzing and evaluating the health condition of the running equipment, and the online monitoring data of the power transformation equipment has the defects that the interfaces of various equipment are not uniform in the acquisition and transmission processes, so that the cable is difficult to access a data terminal, and the fault rate of the equipment is high. Meanwhile, the problems of large data processing delay, high data transmission bandwidth occupancy rate and the like are faced.
SUMMERY OF THE UTILITY MODEL
In order to overcome above-mentioned problem or solve above-mentioned problem at least partially, the embodiment of the utility model provides a substation equipment data acquisition device can carry out real-time measurement and data forwarding to substation equipment's state parameter, and transmission speed is fast, stability is strong.
The embodiment of the utility model is realized like this:
the embodiment of the application provides a data acquisition device for power transformation equipment, which comprises a main control module, an input/output module, an RTC clock module, an SIM card module, a power supply module and a communication module, wherein the input/output module, the RTC clock module, the SIM card module, the power supply module and the communication module are connected with the main control module;
the communication module comprises a plurality of communication interface circuits, and the communication interface circuits are used for acquiring multi-source analog signals and sending the multi-source analog signals to the main control module/used for transmitting monitored digital signals to the terminal management system according to instructions of the main control module; the main control module is used for receiving the multi-source analog signals, converting the multi-source analog signals into digital signals and carrying out logic judgment and storage, and is also used for communicating with a terminal management system; the open-in and open-out module is used for receiving a state signal of external equipment and driving an external relay loop to realize local/remote control; the RTC clock module is used for providing a clock signal for the system; the SIM card module is used for the terminal management system to identify and manage the data acquisition device.
In some embodiments of the present invention, the communication interface circuit includes a parallel debugging interface, an RS485 interface, an RS232 interface, a CAN communication interface, and an ethernet communication interface.
In some embodiments of the present invention, the input/output module includes a switching value input unit and a switching value output unit;
the switching value input unit comprises a resistor R1, a resistor R2, a resistor R3, a photoelectric coupler OC1 and a diode D1, one end of the resistor R1 is connected with a common end COM of the power transformation equipment switch, the other end of the resistor R1 is connected with a power supply anode, a power supply cathode is connected with the input end of the power transformation equipment switch through the diode D1, the resistor R2 and the resistor R3, the input end of the photoelectric coupler OC1 is connected with two ends of the resistor R3 in parallel, and the output end of the photoelectric coupler OC1 is connected with the main control module;
the switching value output unit comprises a phase inverter B1, a NAND gate H1, a resistor R4, a photoelectric coupler OC2, a resistor R5, a resistor R6, a piezoresistor R7, a diode D2, a triode Q1 and a relay J, the parallel output PB0 of the main control module is connected with the first input end of the NAND gate H1 through the phase inverter B1, the second input end of the NAND gate H1 is connected with the output end of the output end PB1, the input end of the photoelectric coupler OC2 is respectively connected with one end of the resistor R4 and the output end of the NAND gate H1, the main control module is connected with the other end of the resistor R4, one end of the output end of the photoelectric coupler OC2 is connected with a power supply, the other end of the output end of the photoelectric coupler is grounded through the resistor R5 and the resistor R6, the base electrode of the triode Q1 is connected with the common end of the resistor R5 and the collector electrode of the triode Q1 through the relay J, the emitter electrode of the triode Q1 is grounded, the diode D2 is connected with two ends of the relay J in parallel, the switch of the relay J serves as the switching output value, the piezoresistor R7 is grounded after being connected with the coil FA in series.
In some embodiments of the present invention, any of the RS485 interfaces includes a chip U5, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a transistor Q2, and a 485 interface;
a receiving port RX of the main control module is connected with a pin 1 of a chip U5, a transmitting port TX of the main control module is connected with a base electrode of a triode Q2 through a resistor R9, an emitter of the triode Q2 is grounded, a collector of the triode Q2 is connected with a pin 3 of the chip U5, the pin 3 of the chip U5 is connected with a power supply through a resistor R8, the pin 2 of the chip U5 is connected with the pin 3, a pin 6 of the chip U5 is connected with the power supply through a resistor R10, the pin 6 is also connected with the pin 2 of a 485 interface, the pin 6 and the pin 7 of the chip U5 are connected through a resistor R11, the pin 7 of the chip U5 is grounded through a resistor R12, the pin 7 is also connected with the pin 1 of the 485 interface, the pin 1 of the chip U5 is connected with the power supply, and the pin 4 and the pin 5 of the chip U5 are grounded.
In some embodiments of the present invention, the RS232 interface includes a chip U3, a capacitor C1, a capacitor C2, a capacitor C3, and a capacitor C4;
In some embodiments of the present invention, the CAN communication interface includes a chip U2, a capacitor C5, a capacitor C6, a capacitor C7, a resistor R13, a resistor R14, and a resistor R15;
In some embodiments of the present invention, the power module includes a transformer T1, a capacitor C8, a capacitor C9, a capacitor C10, an inductor L1, an inductor L2, a resistor R16, a resistor R17, a capacitor C11, a rectifier bridge BR1, a polarity capacitor C14, a polarity capacitor C13, a polarity capacitor C12, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a transistor Q3, and a voltage regulator T2;
the primary side of a transformer T1 is connected with an external alternating current power supply, one end of the secondary side of the transformer T1 is connected to the input end of a rectifier bridge BR1 sequentially through an inductor L1, a resistor R16 and a capacitor C11, the other end of the secondary side of the transformer T1 is connected to the input end of the rectifier bridge BR1 through an inductor L2, two ends of the secondary side of the transformer T1 are connected through a capacitor C8, the common end of the inductor L1 and the resistor R16 is connected to the input end of the rectifier bridge BR1 through a capacitor C9 and a capacitor C10, the output ends of the rectifier bridge BR1 are connected through a polar capacitor C14, the positive electrode of the polar capacitor C14 is connected with a power supply through a resistor R18 and a polar capacitor C13, the negative electrode of the polar capacitor C14 is grounded, the positive electrode of the polar capacitor C13 is connected with the base electrode of a triode Q3, the collector electrode of the triode Q3 is connected with the positive electrode of the polar capacitor C14, the emitter electrode of the triode Q3 is connected with the negative electrode of the polar capacitor C13 through a resistor R19, the negative electrode of the polar capacitor C13 is grounded through a resistor R20 and a resistor R21, the negative electrode of the polar capacitor C13 is also grounded, the positive electrode of a power supply T2 of a voltage regulator T2, and a common terminal of the voltage regulator T2, and a common resistor R21 of the voltage regulator are connected with the resistor R21.
In some embodiments of the present invention, the main control module, the serial port module, the RTC clock module, the SIM card module, the power module, and the communication module are integrated on a PCB board, and the PCB board is disposed in the housing; the side of the shell is provided with a plurality of indicator lamps and interfaces.
The utility model discloses an in some embodiments, still include temperature and humidity sensor, temperature and humidity sensor is connected with host system.
Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:
the embodiment of the application provides a substation equipment data acquisition device, adopts isolated power supply, and the reliability is high, ESD electrostatic protection nature is strong, and supports multiple communication protocol, realizes information transfer, integration, editing, management and equipment monitoring function between automation equipment and the main website system such as computer protection, measuring and control device, intelligent instrument, direct current screen. The system can be used for directly collecting relevant data of field devices in a small-sized automation system and transmitting the relevant data to a terminal management system through a specified communication protocol and a communication medium (Ethernet, RS232/485 and the like) so as to complete the monitoring of the whole field. Meanwhile, the system can also be used as a functional substation and a spacer layer in a medium-large system, and classification and directional transmission of data are realized through layer-by-layer concatenation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a block diagram of an embodiment of a data acquisition device for power transformation equipment according to the present invention;
fig. 2 is a circuit diagram of an embodiment of a data acquisition device for substation equipment according to the present invention, in which an input module and an output module are provided;
fig. 3 is a circuit diagram of an RS485 interface in an embodiment of a data acquisition device of a power transformation apparatus of the present invention;
fig. 4 is a circuit diagram of an RS232 interface in an embodiment of a data acquisition device for substation equipment according to the present invention;
fig. 5 is a circuit diagram of a CAN communication interface in an embodiment of the data acquisition device of the power transformation apparatus of the present invention;
fig. 6 is a circuit diagram of a power module in an embodiment of a data acquisition device for substation equipment according to the present invention;
fig. 7 is a schematic diagram of an embodiment of the data acquisition device for power transformation equipment according to the present invention.
Icon: 1. a main control module; 2. opening an input and output module; 3. an RTC clock module; 4. a SIM card module; 5. a power supply module; 6. and a communication module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto. Furthermore, the appearances of the terms "first," "second," "third," and the like, if any, are only used to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, the term "plurality" if present means at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Examples
Referring to fig. 1, an embodiment of the present invention provides a data acquisition device for power transformation equipment, which includes a main control module 1, and an input/output module 2, an RTC clock module 3, an SIM card module 4, a power module 5, and a communication module 6 connected to the main control module 1;
the communication module 6 comprises a plurality of communication interface circuits, and the communication interface circuits are used for acquiring multi-source analog signals and sending the multi-source analog signals to the main control module 1/used for transmitting monitored digital signals to the terminal management system according to instructions of the main control module 1; the main control module 1 is used for receiving the multi-source analog signals and converting the multi-source analog signals into digital signals for logic judgment and storage, and the main control module 1 is also used for communicating with a terminal management system; the open-in and open-out module 2 is used for receiving a state signal of external equipment and driving an external relay loop to realize local/remote control; the RTC clock module 3 is used for providing a clock signal for the system; the SIM card module 4 is used for the terminal management system to identify and manage the data acquisition device.
In the technical solution provided in this embodiment, the communication module 6 includes a plurality of interface circuits and a serial port communication circuit, such as a debug interface, an RS485 interface, an RS232 interface, a CAN communication interface, an ethernet communication interface, and the like. The device accesses a data terminal through various communication interfaces and collects multi-source data, including collecting the switching value of the power transformation equipment (such as state signals of an operation control button, a travel switch, a proximity switch, a pressure relay and the like) and some analog signals measured by a sensor. Then, the collected multi-source signals are converted into digital signals through the main control module 1 to be logically judged and stored, and data are transmitted to the terminal management system to be calculated and processed according to instructions of the terminal management system, so that the state monitoring of the power transformation equipment is realized. In addition, the data is processed in a terminal management system or a local place, so that the data transmission speed is high. Meanwhile, data processing work is distributed among different data centers and equipment in calculation, data safety is guaranteed, the data centers are located near users, the probability of network interruption is very low, and therefore the reliability of data network transmission is guaranteed.
Furthermore, the open-in and open-out module 2 is used for receiving a state signal of an external device and driving an external relay loop to realize local/remote control; the RTC clock module 3 is used for providing a clock signal for the system to smoothly execute the related programs, so as to ensure the normal operation of the system. The SIM card module 4 is used for the terminal management system to identify and manage the data acquisition device. When receiving the data transmitted by the data acquisition device, the terminal management system can identify the identity or number of the device through the SIM card, and then perform classified management, calculation and storage on the data.
In some embodiments of the present invention, the communication interface circuit includes a parallel debugging interface, an RS485 interface, an RS232 interface, a CAN communication interface, and an ethernet communication interface.
Specifically, referring to fig. 2, the input/output module 2 includes a switching value input unit and a switching value output unit;
the switching value input unit comprises a resistor R1, a resistor R2, a resistor R3, a photoelectric coupler OC1 and a diode D1, one end of the resistor R1 is connected with a common end COM of a power transformation equipment switch, the other end of the resistor R1 is connected with a power supply anode, a power supply cathode is connected with the input end of the power transformation equipment switch through the diode D1, the resistor R2 and the resistor R3, the input end of the photoelectric coupler OC1 is connected with two ends of the resistor R3 in parallel, and the output end of the photoelectric coupler OC1 is connected with the main control module 1;
the switching value output unit comprises a phase inverter B1, a NAND gate H1, a resistor R4, a photoelectric coupler OC2, a resistor R5, a resistor R6, a piezoresistor R7, a diode D2, a triode Q1 and a relay J, the parallel output PB0 of the main control module 1 is connected with the first input end of the NAND gate H1 through the phase inverter B1, the second input end of the NAND gate H1 is connected with the output end of the output end PB1, the input end of the photoelectric coupler OC2 is respectively connected with one end of the resistor R4 and the output end of the NAND gate H1, the other end of the resistor R4 is connected with the main control module 1, one end of the output end of the photoelectric coupler OC2 is connected with a power supply, the other end of the output end of the photoelectric coupler is grounded through the resistor R5 and the resistor R6, the base electrode of the triode Q1 is connected with the common end of the resistor R5 and the resistor R6, the collector electrode of the triode Q1 is connected with the power supply through the relay J, the emitter electrode of the triode Q1 is grounded, the diode D2 is connected with two ends of the relay J in parallel, the switch of the relay J serves as the switching output value, and the piezoresistor R7 is grounded after being connected with the solenoid valve coil FA in series.
In the technical solution provided in this embodiment, the switching value reflects the on or off state of the contact and the number for controlling the contact to be turned on or off, which can be represented by 0, 1. For example, the on/off state of a circuit breaker or a disconnector, the relay contact of a gas relay or an intermediate relay, the contact of a transfer switch, the state of a device pressing plate connecting piece, and the like. The switching value input unit is used for introducing state signals required by the measurement and control object into the system, and the switching value output unit is used for controlling or adjusting digital signals or data sent by the main control module 1. In the embodiment, when a switching signal is input into a system, the isolation is carried out through the photoelectric coupler OC1, so that on one hand, an external field device and a transmission line are isolated from a digital circuit, and the system is prevented from being damaged; on the other hand, isolation between a plurality of input circuits is achieved. During switching signal output, parallel output PB0 and PB1 pass through phase inverter B1 and NAND gate H1 and are connected with optoelectronic coupler OC 2's emitting diode, prevent because of parallel delivery outlet area load capacity is limited, be not enough to drive emitting diode's the condition, simultaneously, adopt behind the NAND gate, need satisfy two conditions and just enable relay J action (open/close), strengthened the interference killing feature.
Referring to fig. 3, in some embodiments of the present invention, any one of the RS485 interfaces includes a chip U5, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a transistor Q2, and a 485 interface;
the receiving port RX of the main control module 1 is connected with a pin 1 of a chip U5, a transmitting port TX of the main control module 1 is connected with a base electrode of a triode Q2 through a resistor R9, an emitter of the triode Q2 is grounded, a collector of the triode Q2 is connected with a pin 3 of the chip U5, the pin 3 of the chip U5 is connected with a power supply through a resistor R8, the pin 2 of the chip U5 is connected with the pin 3, a pin 6 of the chip U5 is connected with the power supply through a resistor R10, the pin 6 is further connected with the pin 2 of a 485 interface, the pin 6 and the pin 7 of the chip U5 are connected through a resistor R11, the pin 7 of the chip U5 is grounded through a resistor R12, the pin 7 is further connected with the pin 1 of the 485 interface, the pin 1 of the chip U5 is connected with the power supply, and the pin 4 and the pin 5 of the chip U5 are grounded.
In the technical solution provided in this embodiment, pin 3 (DE) of the chip U5 is a driver output enable terminal, and pin 2 (RE) is a receiver output enable terminal. When the collector of the triode Q2 is at a high level, the transmission is effective, and the reception is cut off, so that the main control module 1 can transmit the relevant data from the 485 interface; when the collector of the triode Q2 is at a low level, the reception is valid, and the transmission is cut off, so that the main control module 1 can receive external data from the 485 interface. And the pull-up resistor R10 and the pull-down resistor R12 are used for ensuring that the unconnected chip U5 is in an idle state, providing network failure protection and improving the reliability of the RS485 node and the network. Illustratively, the chip U5 may be a MAX485 communication chip. By adopting the RS485 interface, high-speed transmission of data is realized, and the maximum transmission speed can reach more than 10 Mb/s.
Referring to fig. 4, in some embodiments of the present invention, the RS232 interface includes a chip U3, a capacitor C1, a capacitor C2, a capacitor C3, and a capacitor C4;
In the technical solution provided in this embodiment, the working principle of the RS232 interface is similar to that of the RS485 interface, and is not described herein again. Illustratively, the chip U3 in the RS232 interface circuit may adopt a MAX232 communication chip.
Referring to fig. 5, in some embodiments of the present invention, the CAN communication interface includes a chip U2, a capacitor C5, a capacitor C6, a capacitor C7, a resistor R13, a resistor R14, and a resistor R15;
In the technical solution provided in this embodiment, for example, the chip U2 may adopt a high-speed CAN transceiver of TJA1050 model, which has the advantages of high speed and low electromagnetic radiation. Meanwhile, in order to prevent overcurrent impact, the pin 6 (CANH) and the pin 7 (CANL) of the TJA1050T are connected to the CAN bus through a resistor R14 and a resistor R13, respectively. And 2 capacitors C6 and C7 are connected in parallel between pin 6 (CANH) and pin 7 (CANL) and ground for filtering out high frequency interference on the CAN bus.
Referring to fig. 6, in some embodiments of the present invention, the power module 5 includes a transformer T1, a capacitor C8, a capacitor C9, a capacitor C10, an inductor L1, an inductor L2, a resistor R16, a resistor R17, a capacitor C11, a rectifier bridge BR1, a polarity capacitor C14, a polarity capacitor C13, a polarity capacitor C12, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a transistor Q3, and a voltage regulator T2;
the primary side of a transformer T1 is connected with an external alternating current power supply, one end of the secondary side of the transformer T1 is connected to the input end of a rectifier bridge BR1 sequentially through an inductor L1, a resistor R16 and a capacitor C11, the other end of the secondary side of the transformer T1 is connected to the input end of the rectifier bridge BR1 through an inductor L2, two ends of the secondary side of the transformer T1 are connected through a capacitor C8, the common end of the inductor L1 and the resistor R16 is connected to the input end of the rectifier bridge BR1 through a capacitor C9 and a capacitor C10, the output ends of the rectifier bridge BR1 are connected through a polar capacitor C14, the positive electrode of the polar capacitor C14 is connected with a power supply through a resistor R18 and a polar capacitor C13, the negative electrode of the polar capacitor C14 is grounded, the positive electrode of the polar capacitor C13 is connected with the base electrode of a triode Q3, the collector electrode of the triode Q3 is connected with the positive electrode of the polar capacitor C14, the emitter electrode of the triode Q3 is connected with the negative electrode of the polar capacitor C13 through a resistor R19, the negative electrode of the polar capacitor C13 is grounded through a resistor R20 and a resistor R21, the negative electrode of the polar capacitor C13 is also grounded, the positive electrode of a power supply T2 of a voltage regulator T2, and a common terminal of the voltage regulator T2, and a common resistor R21 of the voltage regulator are connected with the resistor R21.
In the technical scheme provided by this embodiment, an external ac power supply firstly steps down through a transformer T1, then performs filtering through an inductor L1, an inductor L2, a capacitor C9, a capacitor C10, and the like, then performs rectification through a rectifier bridge BR1, converts ac power into dc power, and finally performs voltage regulation and voltage stabilization through a voltage regulator T2, a polar capacitor C13, a polar capacitor C12, a resistor R20, a resistor R21, and the like, so as to maintain the stability of output voltage, and enable each functional module to normally operate under a rated operating voltage.
In some embodiments of the present invention, the device further comprises a housing, the main control module 1, the open-close module 2, the RTC clock module 3, the SIM card module 4, the power module 5 and the communication module 6 are integrated on a PCB board, and the PCB board is disposed in the housing; the side of the shell is provided with a plurality of indicator lamps and interfaces.
Referring to fig. 7, in the technical solution provided in this embodiment, the functional module is integrated on the PCB and is packaged by the housing to form a simple and practical data acquisition device, so as to acquire and forward related data of an automation field and realize state monitoring of the power transformation equipment. The method can be applied to automatic transformation and distribution systems, such as unattended substations, electric monitoring systems of power plants, automatic systems of hydropower stations, automatic systems of substations, automatic systems of power transformation and distribution of enterprises, dispatching/centralized control automatic substation systems, protection management substation systems and the like, and equipment parameter measurement and state monitoring of railway traction substations, AT substations, subareas, switching substations and the like.
The utility model discloses an in some embodiments, still include temperature and humidity sensor, temperature and humidity sensor is connected with host system 1.
In the technical scheme that this embodiment provided, can also detect mainboard humiture through set up temperature and humidity sensing in the device. When the temperature/humidity is too high, the built-in buzzer is used for early warning to remind responsible personnel to take corresponding measures, so that the device is prevented from breaking down.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A data acquisition device of power transformation equipment is characterized by comprising a main control module, an open-close module, an RTC clock module, an SIM card module, a power supply module and a communication module, wherein the open-close module, the RTC clock module, the SIM card module, the power supply module and the communication module are connected with the main control module;
the communication module comprises a plurality of communication interface circuits, and the communication interface circuits are used for acquiring multi-source analog signals and sending the multi-source analog signals to the main control module or transmitting monitored digital signals to the terminal management system according to instructions of the main control module; the main control module is used for receiving the multi-source analog signals, converting the multi-source analog signals into digital signals and carrying out logic judgment and storage, and is also used for communicating with the terminal management system; the open-in and open-out module is used for receiving a state signal of external equipment and driving an external relay loop to realize local/remote control; the RTC clock module is used for providing a clock signal for the system; and the SIM card module is used for a terminal management system to identify and manage the data acquisition device.
2. The data acquisition device for the power transformation equipment as claimed in claim 1, wherein the communication interface circuit comprises a parallel debugging interface, an RS485 interface, an RS232 interface, a CAN communication interface and an Ethernet communication interface.
3. The data acquisition device for the power transformation equipment as claimed in claim 1, wherein the open-close module comprises a switching value input unit and a switching value output unit;
the switching value input unit comprises a resistor R1, a resistor R2, a resistor R3, a photoelectric coupler OC1 and a diode D1, one end of the resistor R1 is connected with a common end COM of a power transformation equipment switch, the other end of the resistor R1 is connected with a power supply anode, a power supply cathode is connected with the input end of the power transformation equipment switch through the diode D1, the resistor R2 and the resistor R3, the input end of the photoelectric coupler OC1 is connected with two ends of the resistor R3 in parallel, and the output end of the photoelectric coupler OC1 is connected with the main control module;
the switching value output unit comprises a phase inverter B1, a NAND gate H1, a resistor R4, a photoelectric coupler OC2, a resistor R5, a resistor R6, a piezoresistor R7, a diode D2, a triode Q1 and a relay J, wherein the parallel output end PB0 of the master control module is connected with the first input end of the NAND gate H1 through the phase inverter B1, the output end PB1 is connected with the second input end of the NAND gate H1, the input end of the photoelectric coupler OC2 is respectively connected with one end of the resistor R4 and the output end of the NAND gate H1, the other end of the resistor R4 is connected with the master control module, one end of the output end of the photoelectric coupler OC2 is connected with a power supply, the other end of the output end of the photoelectric coupler OC2 is grounded through the resistor R5 and the resistor R6, the common end of the resistor R5 and the resistor R6 is connected with the base of the triode Q1, the collector of the triode Q1 is connected with the power supply through the relay J, the emitter of the triode Q1 is grounded, the diode D2 is connected with two ends of the relay J in parallel, the switch of the relay J is used as the switching output value, and the solenoid valve FA is connected with the switch of the relay J in series after the piezoresistor R7 is connected with the solenoid valve coil FA in series.
4. The data acquisition device of the power transformation equipment as claimed in claim 2, wherein any RS485 interface comprises a chip U5, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a transistor Q2 and a 485 interface;
the receiving port RX of the main control module is connected with a pin 1 of a chip U5, a transmitting port TX of the main control module is connected with a base of a triode Q2 through a resistor R9, an emitter of the triode Q2 is grounded, a collector of the triode Q2 is connected with a pin 3 of the chip U5, the pin 3 of the chip U5 is connected with a power supply through a resistor R8, the pin 2 of the chip U5 is connected with the pin 3, a pin 6 of the chip U5 is connected with the power supply through a resistor R10, the pin 6 is also connected with a pin 2 of a 485 interface, the pin 6 and the pin 7 of the chip U5 are connected through a resistor R11, the pin 7 of the chip U5 is grounded through a resistor R12, the pin 7 is also connected with a pin 1 of the 485 interface, the pin 1 of the chip U5 is connected with the power supply, and the pin 4 and the pin 5 of the chip U5 are grounded.
5. A substation equipment data collection device according to claim 2, wherein the RS232 interface comprises a chip U3, a capacitor C1, a capacitor C2, a capacitor C3 and a capacitor C4;
through between pin 1 and the pin 3 of chip U3 electric capacity C2 connects, passes through between pin 4 and the pin 5 electric capacity C1 connects, and pin 11 connects main control module's transmission port TX, and pin 12 connects main control module's receiving port RX, passes through between pin 2 and the pin 16 electric capacity C3 connects, and pin 16 connects the power, and pin 6 passes through electric capacity C4 ground connection, pin 14 connect transformer equipment's public wiring end DB 2's pin 2, and pin 13 connects transformer equipment's public wiring end DB 2's pin 3.
6. A substation equipment data acquisition device according to claim 2, wherein the CAN communication interface comprises a chip U2, a capacitor C5, a capacitor C6, a capacitor C7, a resistor R13, a resistor R14 and a resistor R15;
pin 1 of chip U2 is connected the transmission port TX of host system, pin 4 is connected the receiving port RX of host system, pin 2 is grounded, pin 3 and pin 8 are connected through electric capacity C5, pin 3 is connected with the power supply, pin 8 is grounded, pin 7 and pin 6 are connected through resistance R13, resistance R15 and resistance R14 in turn, the public end of resistance R13 and resistance R15 connects high voltage CAN/H, the public end of resistance R13 and resistance R15 still passes through electric capacity C6 is grounded, the public end of resistance R15 and resistance R14 connects low voltage CAN/L, the public end of resistance R15 and resistance R14 still passes through electric capacity C7 is grounded.
7. The data acquisition device for the power transformation equipment as claimed in claim 1, wherein the power module comprises a transformer T1, a capacitor C8, a capacitor C9, a capacitor C10, an inductor L1, an inductor L2, a resistor R16, a resistor R17, a capacitor C11, a rectifier bridge BR1, a polarity capacitor C14, a polarity capacitor C13, a polarity capacitor C12, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a transistor Q3 and a voltage regulator T2;
the primary side of the transformer T1 is connected with an external alternating current power supply, one end of the secondary side of the transformer T1 is connected to the input end of the rectifier bridge BR1 sequentially through the inductor L1, the resistor R16 and the capacitor C11, the other end of the secondary side of the transformer T1 is connected to the input end of the rectifier bridge BR1 through the inductor L2, the two ends of the secondary side of the transformer T1 are connected through the capacitor C8, the common end of the inductor L1 and the resistor R16 is connected to the input end of the rectifier bridge BR1 through the capacitor C9 and the capacitor C10, the output end of the rectifier bridge BR1 is connected through the polar capacitor C14, the positive electrode of the polar capacitor C14 is connected with a power supply through the resistor R18 and the polar capacitor C13, the negative electrode of the polar capacitor C14 is grounded, the positive electrode of the polar capacitor C13 is connected with the base electrode of the triode Q3, the collector electrode of the triode Q3 is connected with the positive electrode of the polar capacitor C14, the emitter of the triode Q3 is connected with the negative electrode of the polar capacitor C13 through the resistor R19, the negative electrode of the polar capacitor C13 is connected with the ground terminal of the resistor R20, the negative electrode of the polar capacitor R21 is connected with the common voltage regulator T2, and the voltage regulator T2 are connected with the ground voltage regulator, and the voltage regulator T2.
8. The data acquisition device for the power transformation equipment as claimed in claim 1, further comprising a housing, wherein the main control module, the serial port module, the RTC clock module, the SIM card module, the power supply module and the communication module are integrated on a PCB, and the PCB is arranged in the housing; the side of casing is equipped with a plurality of pilot lamps and interface.
9. The substation equipment data acquisition device of claim 8, further comprising a temperature and humidity sensor, wherein the temperature and humidity sensor is connected with the main control module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222658729.0U CN218276203U (en) | 2022-10-10 | 2022-10-10 | Substation equipment data acquisition device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222658729.0U CN218276203U (en) | 2022-10-10 | 2022-10-10 | Substation equipment data acquisition device |
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