CN218387750U - Intelligent wireless data acquisition terminal with encryption transmission function - Google Patents
Intelligent wireless data acquisition terminal with encryption transmission function Download PDFInfo
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- CN218387750U CN218387750U CN202123035605.9U CN202123035605U CN218387750U CN 218387750 U CN218387750 U CN 218387750U CN 202123035605 U CN202123035605 U CN 202123035605U CN 218387750 U CN218387750 U CN 218387750U
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Abstract
The utility model discloses an intelligent wireless data acquisition terminal with encryption transmission function, which comprises a PCB bottom plate, an antenna fixing plate and an encryption chip plate; the PCB bottom plate is provided with an MCU main control chip, a remote signaling input circuit, a remote control output circuit, an RS232 communication interface circuit, an RS485 communication interface circuit and an LORA wireless transmission module; the antenna fixing plate is connected with the PCB bottom plate, and an SMA antenna seat of the LORA wireless transmission module is fixed on the antenna fixing plate; the encryption chip board is connected with the PCB bottom board and is provided with a cryptographic chip with a national cryptographic algorithm. The utility model discloses collection terminal cocoa be very convenient will distribute in all kinds of data information collection back in different places and assemble, carry out data record, statistics, analysis, make things convenient for all-round control, alleviate fortune dimension personnel equipment maintenance pressure greatly, improve fortune dimension efficiency.
Description
Technical Field
The utility model relates to a and thing networking information acquisition and transmission equipment field, in particular to possess intelligent wireless data acquisition terminal who encrypts transmission function.
Background
In the existing comprehensive monitoring system for auxiliary equipment of a transformer substation, the traditional method is to connect information to be acquired to on-site equipment through a communication cable, and the on-site equipment acquires the information in a centralized manner and uploads the information to a network shutdown machine or a comprehensive application host computer at a station end.
In the conventional method, if a large number of cables need to be laid for signal acquisition for comprehensively acquiring information of auxiliary equipment in a station, the actual situation is limited by cable channel space, local equipment interface quantity limitation, budget and the like, the information of the auxiliary equipment cannot be comprehensively acquired, and an implementation scheme usually makes a choice.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a possess the intelligent wireless data acquisition terminal who encrypts transmission function lies in the problem that can be better the above-mentioned wired mode transmission signal of solution exists with high costs.
To achieve these objects and other advantages in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided an intelligent wireless data acquisition terminal having an encryption transmission function, including a PCB bottom plate, an antenna fixing plate, and an encryption chip plate;
the PCB bottom plate is provided with an MCU main control chip, a remote signaling input circuit, a remote control output circuit, an RS232 communication interface circuit, an RS485 communication interface circuit and an LORA wireless transmission module;
the antenna fixing plate is connected with the PCB bottom plate, and an SMA antenna seat of the LORA wireless transmission module is fixed on the antenna fixing plate;
the encryption chip board is connected with the PCB bottom board and is provided with a cryptographic chip with a national cryptographic algorithm;
the MCU main control chip is connected with the RS232 communication interface circuit, the RS485 communication interface circuit, the encryption chip board, the LORA wireless transmission module and the remote signaling switch-in circuit and the remote control switch-out circuit.
Further, an RF radio frequency seat is arranged on the antenna fixing plate.
Furthermore, a FLASH memory chip is arranged on the PCB bottom plate, and an IIC interface of the MCU is connected with the FLASH memory chip.
Furthermore, a status indicator lamp is arranged on the PCB bottom plate.
Furthermore, a relay and an AC220V voltage state detection circuit are arranged on the PCB bottom plate;
the MCU main control chip is connected with the relay through an IO pin to control the opening and closing of the relay, the relay is connected with the equipment of an output loop of the relay through opening and closing action control, and the AC220V voltage state detection circuit is connected with the MCU main control chip.
Further, MCU main control chip includes UART1, UART2, UART3, UART4 and UART5, UART1, UART2, UART3 are connected to RS232 communication interface circuit interface and/or RS485 communication interface circuit interface, the encryption chip board is connected to UART4, LORA wireless transmission module is connected to UART 5.
Further, a UART1 of an MCU main control chip on the PCB bottom plate is connected after optical coupling isolation, and an RS232 transceiver of an RS232 communication interface circuit is connected to a first external terminal; the UART2 of the MCU main control chip is simultaneously connected with the RS232 transceiver and the RS485 transceiver after optical coupling isolation; and the UART3 of the MCU main control chip is connected with the RS485 transceiver after optical coupling isolation.
Further, the remote signaling switch-in circuit is connected to the PCB bottom plate through the lower layer of the second external terminal 15, inputs an optocoupler after passing through the TVS backward diode, and outputs the optocoupler to an IO pin of the MCU main control chip after being isolated by the optocoupler;
the remote control outgoing circuit drives the on or off of the optocoupler through two IO pins of the MCU main control chip, the output side of the optocoupler is connected with a coil of the relay, if the optocoupler is switched on, the coil of the relay is switched on, and a contact of the relay is closed.
Further, the PCB bottom plate is provided with a switch power supply module.
Further, the antenna fixing device further comprises a shell used for mounting the PCB, and the SMA antenna seat on the antenna fixing plate extends out of the shell and is not connected with the shell.
The utility model discloses at least, include following beneficial effect: the acquisition terminal of this application can carry out the network deployment through the communication protocol of independently designing and connect, can be very convenient will distribute in the main control room of transformer substation, high-pressure chamber, equipment room, assemble the auxiliary control and the tour system of main control room behind the all kinds of data information acquisition in high-pressure factory and carry out data record, statistics, analysis, make things convenient for the operation maintenance maintainer to carry out all-round control to all kinds of auxiliary assembly running states of transformer substation, can alleviate operation maintenance personnel equipment maintenance pressure greatly, improve operation maintenance efficiency.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic block diagram of one embodiment of the present invention;
fig. 2 is a diagram of a PCB structure of an embodiment of the invention;
FIG. 3 is a block diagram of the main housing of one embodiment of the present invention;
FIG. 4 is a sub-housing structure of an embodiment of the invention;
fig. 5 is a remote signaling open circuit of the present invention;
fig. 6 is a remote control output circuit of the present invention;
fig. 7 is an RS232 and RS485 communication interface circuit of the present invention;
fig. 8 is the AC220V voltage status detection circuit of the present invention.
Description of reference numerals: 1-a PCB backplane; 2-an antenna fixing plate; 3-encrypting the chip board; 4-MCU main control chip; 5-LORA wireless transmission module; 6-LED lamp holder; 7-a relay; 9-copper columns; 10-SMA antenna mount; 11-relay output terminals; 12-power input terminal; 13-an EMI filter; 14-a switching power supply module; 15-a second external terminal; 101-a main housing; 102-fixing a pressure riveting nut on a bottom plate; 103-pressing and riveting a nut hole; 104-a first opening; 105-ground screw hole; 106-rail mounting fasteners; 107-second opening; 108-sub-shell.
Detailed Description
The technical solutions in the embodiments of the present invention will be described in detail with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments of the present invention, all embodiments that can be made by anyone skilled in the art without any creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model provides an intelligent wireless data acquisition terminal with encryption transmission function, which is shown in figures 1 to 8 and comprises a PCB bottom plate 1, an antenna fixing plate 2 and an encryption chip plate 3;
the PCB bottom plate 1 is provided with an MCU main control chip 4, a remote signaling input circuit (shown in figure 5), a remote control output circuit (shown in figure 6), an RS232 communication interface circuit, an RS485 communication interface circuit and an LORA wireless transmission module 5; in this embodiment, the LORA wireless transmission module 5 is disposed on the back of the PCB substrate 1.
The antenna fixing plate adopts 2 copper posts 9 to be connected with PCB bottom plate 1, the SMA antenna pedestal 10 of the wireless transmission module 5 of LORA on the antenna fixing plate.
The encrypted chip board 3 is vertically fixed on the PCB bottom board 1, the encrypted chip board 3 and the PCB bottom board 1 are provided with double-row pins, 3 bits (6 pins in total) are arranged, the distance is 2.0mm, the distance is 90 degrees, the encrypted chip board 3 is provided with the encrypted chip with the national cryptographic algorithm, the encrypted chip board 3 can be welded with the encrypted chips with the national cryptographic algorithm of different packages, a supplier does not need to modify the PCB bottom board 1 when replacing the packages, and the cost is saved.
The MCU main control chip 4 is connected with the RS232 communication interface circuit, the RS485 communication interface circuit, the encryption chip board 3, the LORA wireless transmission module 5, the remote signaling open-in circuit and the remote control open-out circuit.
In fig. 1, the method for implementing secure transmission of LORA wireless data in this embodiment is to encrypt messages by using a national secret encryption algorithm, after receiving a call data command from an upper device of an LORA transmission module, a specific MCU main control chip 4 sends a reply message to a national secret short sending encryption chip for SM1 or SM2 encryption before sending the reply message, the encryption method is selectable, after encryption is completed, the encryption chip sends a ciphertext back to the MCU main control chip 4, and after receiving the ciphertext, the MCU main control chip 4 replies the ciphertext back to the upper device. The adoption of the scheme has the advantages that the hardware resources of the MCU main control chip 4 are fully utilized, and the remote signaling open-in signal acquisition of the remote signaling open-in circuit and the remote control open-out control of the remote control open-out circuit are realized through the GPIO pin of the MCU; the RS232 transceiver of the RS232 communication interface circuit is connected to the first external terminal 15 through the UART1 of the MCU to be used as a debugging interface of the terminal to the upper computer; the RS232 transceiver and the RS485 transceiver are simultaneously connected through the UART2 of the MCU to form an RS232 and RS485 multiplexing interface; the RS485 transceiver of the RS485 communication interface circuit is connected through the UART3 of the MCU to be used as an RS485 interface; the UART4 of the MCU is connected with the encryption chip board 3 to realize the encryption function of the national encryption algorithm; the LORA wireless communication function is realized by connecting the UART5 of the MCU with the LORA wireless transmission module 5.
An RF (radio frequency) base (not shown) and a FLASH memory chip are arranged on the antenna fixing plate, and an IIC (inter-integrated circuit) interface of the MCU is connected with the FLASH memory chip (not shown) and is used for storing configuration parameter information of terminal program operation.
According to fig. 2, be provided with status indicator lamp on the PCB bottom plate 1, status indicator lamp includes 5 LED lamp holders 6,5 group LED lamp holder 6 and indicates the lamp holder for the power status, and the running status indicates the lamp holder, and RS232 receives and dispatches status indicator lamp holder, RS485 receive and dispatches status indicator lamp holder, LORA module communication receive and dispatch status indicator lamp holder.
The PCB bottom plate 1 is provided with a relay 7 and an AC220V voltage state detection circuit (shown in figure 8); the MCU main control chip 4 is connected with an optical coupler input end through an IO pin, an optical coupler output end is connected with a relay 7 in series to control the on-off of the relay 7, the relay 7 controls equipment connected to an output loop of the relay through on-off action, the capacity of an output contact of the relay 7 can reach 250V 5A of alternating current, and the on-off of equipment with larger power can be directly controlled; the AC220V voltage state detection circuit is connected with the MCU main control chip 4, and can detect whether the power supply circuit of other equipment has 220V voltage or not, thereby judging whether the equipment works or not. The AC220V voltage state detection circuit is used for introducing a 220V voltage loop from the outside through the relay output terminal 11 in the figure 2, forming a TTL level after voltage reduction, rectification and filtering, inputting the TTL level to the MCU main control chip 4 after optical coupling isolation, and detecting the working state of certain equipment which is electrified and works.
MCU main control chip 4 includes UART1, UART2, UART3, UART4 and UART5, UART1, UART2, UART3 are connected to outside RS232 communication interface circuit interface and/or RS485 communication interface circuit interface, encryption chip board 3 is connected to UART4, LORA wireless transmission module 5 is connected to UART 5.
According to the fig. 1 and 2, the UART1 of the MCU main control chip 4 on the pcb bottom board 1 is connected after optical coupling isolation, and the RS232 transceiver to the first external terminal (not shown) of the RS232 communication interface circuit is used as a debugging interface for the terminal to the upper computer; after optical coupling isolation, the UART2 of the MCU main control chip 4 is simultaneously connected with an RS232 transceiver and an RS485 transceiver to form an RS232 and RS485 multiplexing interface connected to the second external terminal 15; the UART3 of the MCU main control chip 4 is connected with the RS485 transceiver after optical coupling isolation and is connected to the second external terminal 15 as an RS485 interface.
The PCB bottom plate 1RS232 interface, the RS485 interface, the remote signaling outgoing interface and the remote control incoming interface are all subjected to power isolation and signal isolation, so that the power input of the terminal complete machine to the shell protective ground reaches 4G omega insulation resistance, and the second external terminal 15 to the shell protective ground reaches 4G omega insulation resistance.
According to the figures 1 and 2, the remote signaling open circuit is connected to the PCB bottom plate 1 through the lower layer of the second external terminal 15, inputs an optocoupler after passing through a TVS (transient voltage suppressor) backward diode, and outputs the optocoupler to an IO pin of the MCU main control chip 4 after being isolated by the optocoupler, so that coupling surge impact caused by overlong input lines can be effectively prevented, and an internal circuit is protected from interference;
the remote control outgoing circuit drives the on or off of the optocoupler through two IO pins of the MCU main control chip 4, the output side of the optocoupler is connected with a coil of the relay 7, if the optocoupler is switched on, the coil of the relay 7 is switched on, and a contact of the relay 7 is closed.
The PCB bottom plate 1 is provided with an AC 220V-to-DC 5V switching power supply module 14. In fig. 2, 1220V working power supply of PCB substrate is introduced from power input terminal 12, and EMI filter 13, x capacitor, Y capacitor, varistor and other protection devices (not shown) are disposed between switching power supply module 14 and 220V power input terminal 12. The second external terminal 15 in fig. 2 can output 5V dc power to the external, and the power is not more than 2W, which can be used to supply power to the external low power consumption sensor connected to the terminal.
The antenna fixing plate is characterized by further comprising a shell used for installing the PCB, wherein the SMA antenna seat on the antenna fixing plate extends out of the shell and is not connected with the shell, and the signal ground of the PCB bottom plate 1 is prevented from being short-circuited with the shell in a protection mode to influence the EMC performance of the terminal.
The combination of fig. 3 and 4 is the housing design of this embodiment. The shell is the panel beating plastic-blasting material, the shell includes main casing body 101 and sub-casing 108, main casing body and sub-casing detachable are connected, and main casing body one side is provided with guide rail installation buckle 106 and ground connection screw hole 105, and main casing body 101 bottom is provided with the fixed pressure riveting nut 102 of PCB bottom plate 1. The main shell is provided with a pressing rivet nut hole 103 connected with the auxiliary shell, and a first opening hole 104 on the main shell is used for enabling the SMA antenna pedestal to extend out of the shell. The second opening 107 in the main housing is the opening through which the LED lamp in the socket extends out of the housing. The main housing upper clinch nut posts 12 are provided for fixing the PCB substrate 1.
While the embodiments of the invention have been described above, it is not intended to be limited to the specific embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed, and to such extent that such modifications are possible without departing from the broad scope of the appended claims.
Claims (10)
1. An intelligent wireless data acquisition terminal with an encryption transmission function is characterized by comprising a PCB bottom plate, an antenna fixing plate and an encryption chip plate;
the PCB bottom plate is provided with an MCU main control chip, a remote signaling input circuit, a remote control output circuit, an RS232 communication interface circuit, an RS485 communication interface circuit and an LORA wireless transmission module;
the antenna fixing plate is connected with the PCB bottom plate, and an SMA antenna seat of the LORA wireless transmission module is fixed on the antenna fixing plate;
the encryption chip board is connected with the PCB bottom board and is provided with a cryptographic chip with a national cryptographic algorithm;
the MCU main control chip is connected with the RS232 communication interface circuit, the RS485 communication interface circuit, the encryption chip board, the LORA wireless transmission module, the remote signaling input circuit and the remote control output circuit.
2. The intelligent wireless data acquisition terminal with encryption transmission function as claimed in claim 1, wherein an RF base is disposed on the antenna fixing plate.
3. The intelligent wireless data acquisition terminal with encryption transmission function as claimed in claim 1, wherein a FLASH memory chip is further arranged on the PCB bottom board, and the IIC interface of the MCU is connected to the FLASH memory chip.
4. The intelligent wireless data acquisition terminal with encryption transmission function as claimed in claim 1, wherein a status indicator lamp is arranged on the PCB bottom plate.
5. The intelligent wireless data acquisition terminal with encryption transmission function as claimed in claim 1, wherein a relay and an AC220V voltage state detection circuit are arranged on the PCB bottom plate;
the MCU main control chip is connected with the relay through an IO pin to control the opening and closing of the relay, the relay is connected with the equipment of an output loop of the relay through opening and closing action control, and the AC220V voltage state detection circuit is connected with the MCU main control chip.
6. The intelligent wireless data acquisition terminal with encryption transmission function according to claim 1, wherein the MCU main control chip comprises UART1, UART2, UART3, UART4 and UART5, the UART1, UART2 and UART3 are connected to the RS232 communication interface circuit interface and/or the RS485 communication interface circuit interface, the UART4 is connected to the encryption chip board, and the UART5 is connected to the LORA wireless transmission module.
7. The intelligent wireless data acquisition terminal with encryption transmission function as claimed in claim 6, wherein UART1 of MCU main control chip on PCB backplane is connected after optical coupling isolation, RS232 transceiver of RS232 communication interface circuit is connected to the first external terminal; the UART2 of the MCU main control chip is simultaneously connected with the RS232 transceiver and the RS485 transceiver after being subjected to optical coupling isolation; and the UART3 of the MCU main control chip is connected with the RS485 transceiver after optical coupling isolation.
8. The intelligent wireless data acquisition terminal with encryption transmission function as claimed in claim 1, wherein the remote signaling open circuit is connected to the PCB bottom plate through the lower layer of the second external terminal, inputs the optical coupler after passing through the TVS backward diode, and outputs the optical coupler to the IO pin of the MCU main control chip after being isolated by the optical coupler;
the remote control output circuit drives the on or off of the optocoupler through two IO pins of the MCU main control chip, the output side of the optocoupler is connected with a coil of the relay, if the optocoupler is switched on, the coil of the relay is switched on, and a contact of the relay is closed.
9. The intelligent wireless data acquisition terminal with encryption transmission function as claimed in claim 1, wherein the PCB bottom board is provided with a switch power supply module.
10. The intelligent wireless data acquisition terminal with encryption transmission function as claimed in claim 1, further comprising a housing for mounting the PCB board, wherein the SMA antenna mount on the antenna fixing plate extends out of the housing and is not connected with the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123035605.9U CN218387750U (en) | 2021-12-06 | 2021-12-06 | Intelligent wireless data acquisition terminal with encryption transmission function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123035605.9U CN218387750U (en) | 2021-12-06 | 2021-12-06 | Intelligent wireless data acquisition terminal with encryption transmission function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218387750U true CN218387750U (en) | 2023-01-24 |
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ID=84950944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123035605.9U Active CN218387750U (en) | 2021-12-06 | 2021-12-06 | Intelligent wireless data acquisition terminal with encryption transmission function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218387750U (en) |
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2021
- 2021-12-06 CN CN202123035605.9U patent/CN218387750U/en active Active
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