CN109587653B - Signal synchronization device based on no power supply at one place and inconvenient wiring between two places - Google Patents
Signal synchronization device based on no power supply at one place and inconvenient wiring between two places Download PDFInfo
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- CN109587653B CN109587653B CN201910028656.7A CN201910028656A CN109587653B CN 109587653 B CN109587653 B CN 109587653B CN 201910028656 A CN201910028656 A CN 201910028656A CN 109587653 B CN109587653 B CN 109587653B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- Medical Informatics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a signal synchronization device based on no power supply at a certain place and inconvenient wiring between two places, which comprises: the system comprises a CPU, a solar charging module, a wireless communication module and a server, wherein the CPU is connected with field equipment through an input isolation module and an output isolation module, is connected with the wireless communication module through a serial port, and is connected with a battery through an electric quantity detection unit, the solar charging module is connected with the battery and used for charging the battery, and the wireless communication module is connected with the server through a TCP protocol. Compared with the prior art, the signal synchronization device based on no power supply at a certain place and inconvenient wiring between two places has the advantages that data exchange between the two places is carried out by using the wireless communication module, the battery is charged by using the solar charging module, and the signal synchronization device based on no power supply at a remote place can be suitable for the situation of no power supply at a remote area.
Description
Technical Field
The invention relates to the technical field of remote communication, in particular to a signal synchronization device based on no power supply at one place and inconvenient wiring between two places.
Background
At present, in automation industries such as drinking water engineering, hydraulic engineering, chemical industry and the like, mutual control and data exchange need to be carried out between two places, but the situation that one end does not have a power supply and geographical conditions between two places are complicated, and electric wires are laid in a limited manner often appears, so that the construction cost can be greatly increased if forced wiring is carried out, and the maintenance cost is high.
In view of the above-mentioned shortcomings, the present designer is based on the practical experience and professional knowledge that are abundant for many years in engineering application of such products, and is engaged in the application of theory to actively make research and innovation, so as to create a signal synchronization device that has no power supply at one location and is inconvenient for wiring between two locations, and thus, the signal synchronization device has more practical value.
Disclosure of Invention
In view of this, the present invention provides a signal synchronization device based on no power supply at one location and inconvenient wiring between two locations, and aims to solve the technical problems of the prior art that mutual control and data exchange are required between two locations, and when no power supply is provided at one location and wiring is inconvenient, the wiring cost is high and the maintenance is difficult.
The invention provides a signal synchronization device based on no power supply at a certain place and inconvenient wiring between two places, which is characterized by comprising the following components: the system comprises a CPU, a solar charging module, a wireless communication module and a server;
the CPU is connected with the field equipment through the input isolation module and the output isolation module, connected with the wireless communication module through the serial port and connected with the battery through the electric quantity detection unit;
the solar charging module is connected with the battery and used for charging the battery;
the wireless communication module is connected with the server through a TCP protocol.
Further, an LDO is arranged between the battery and the CPU and used for carrying out voltage reduction processing on the voltage.
Further, a DC/DC is arranged between the battery and the wireless communication module and used for reducing voltage.
Furthermore, the input isolation module and the output isolation module are connected with the field device by adopting a through-wall type connecting terminal with a plug.
Furthermore, a data communication isolation module is arranged between the CPU and the wireless communication module.
Further, the CPU is also connected with an input/output state LED indicator lamp.
Furthermore, the wireless communication module is also connected with the working LED indicator lamp.
Compared with the prior art, the signal synchronization device based on no power supply at a certain place and inconvenient wiring between two places has the advantages that data exchange between the two places is carried out by using the wireless communication module, the battery is charged by using the solar charging module, and the signal synchronization device based on no power supply at a remote place can be suitable for the situation of no power supply at a remote area.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a functional block diagram of a system structure of a signal synchronization device according to an embodiment of the present invention, wherein the signal synchronization device has no power supply at one location and is inconvenient to route between two locations;
FIG. 2 is a schematic block diagram of a circuit structure of a signal synchronization device according to an embodiment of the present invention, wherein the signal synchronization device has no power supply at one location and is inconvenient to wire between two locations;
FIG. 3 is a schematic diagram of an LDO power conversion provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of DC/DC power conversion provided by an embodiment of the present invention;
FIG. 5 is a schematic diagram of an input isolation module provided by an embodiment of the invention;
FIG. 6 is a schematic diagram of an output isolation module provided by an embodiment of the present invention;
fig. 7 is a schematic diagram of an electric quantity detection unit according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a data communication isolation module according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a SIM card provided in an embodiment of the present invention;
fig. 10 is a schematic diagram of a solar charging module according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a wireless communication module according to an embodiment of the present invention;
fig. 12 is a schematic diagram of a CPU according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
For reference and clarity, the terms, abbreviations or abbreviations used hereinafter are as follows:
DC/DC: it refers to a DC-to-DC power supply. DC/DC conversion is a method of controlling the magnitude of an output effective voltage by adjusting PWM (duty ratio) of an original direct current.
LDO: (Low Dropout Regulator), meaning a Low Dropout linear Regulator. Linear regulators use transistors or FETs operating in their linear region to subtract excess voltage from the applied input voltage to produce a regulated output voltage.
And (2) TVS: (Transient Voltage Supressor), meaning a Transient Voltage suppressor. The TVS is a high-performance diode type protection device.
API: (Application Programming Interface), meaning Application Programming Interface. An API is a predefined function that aims to provide applications and developers the ability to access a set of routines based on certain software or hardware without having to access source code or understand the details of internal working mechanisms.
TCP (Transmission Control Protocol) is a connection-oriented, reliable transport layer communication Protocol based on byte streams, defined by RFC 793 of IETF.
4G: (the 4th Generation mobile communication technology), fourth-Generation mobile communication standard, which refers to fourth-Generation mobile communication technology, foreign language abbreviation: and 4G.
GPS: (Global Positioning System), GPS is an abbreviation of Global Positioning System (GPS), and is referred to herein as the "ball position System".
Referring to fig. 1 and 2, it can be seen that the signal synchronization apparatus according to the embodiment of the present invention, which has no power supply at one location and is inconvenient to wire between two locations, includes: compared with the prior art, the signal synchronization device based on a certain place power source and inconvenient wiring between two places provided by the invention exchanges data between two places by using the wireless communication module 6 and the server 7, charges the battery by using the solar charging module to charge the battery, is suitable for the condition of no power source in remote areas, supplies power by using solar energy, belongs to a new energy source (renewable energy source), the practicability of the product is greatly improved.
In this embodiment, the input isolation module 11 can eliminate some voltage fluctuations and some interference signals, and compared with the conventional manner of directly connecting with the CPU4, the voltage application range is wider, and the method is safer and more stable. Output isolation module 10 adopts the mode of relay output, not only can be applicable to active equipment, can be applicable to passive equipment simultaneously, very big improvement application range, preferably, input isolation module 11 and output isolation module 10 adopt wall-piercing formula to take binding post (5.08 mm interval) of plug to link to each other with field device, compare in the tradition with the mode of stranded conductor or the booth apart from 2.54mm with the hand, the use electric current is bigger, it is more convenient, can dismantle with the screwdriver when not using.
In this embodiment, the input/output status LED indicator 9 is connected to the CPU4, and the input/output status of the device can be known more intuitively and clearly by using the LED indicator.
In this embodiment, the power detection unit 12 is used to perform power control, the power detection unit 12 reads the power of the battery 1, the CPU4 has a 12-bit high-precision ADC built therein to perform hard sampling, so that the power of the battery 1 can be sampled in real time, and the battery power data of the device is sent to the server through the TCP protocol, so that the power of the battery 1 can be visually displayed through the server.
In this embodiment, LDO2 is through voltage dropping processing 3.3V for the required voltage of CPU4 work battery 1's voltage step-down, and DC/DC14 is through dropping processing, and battery 1 voltage step-down is the required 3.8V voltage of wireless communication module 6, and the design of separated voltage, interference-free that can maximize, both voltage drops independently, and mutual noninterference can increase stability.
In this embodiment, the data communication isolation module 5 is disposed between the CPU4 and the wireless communication module 6, the communication voltage of the CPU4 is 3.3V, and the communication voltage of the wireless communication module 6 is 1.8V, so that the problem of inconsistent communication voltages can be solved by adding the communication isolation module 5, and data is not lost, which is safe and stable. The wireless communication module 6 exchanges data with the data communication module 5 and then is connected with the server 7 through a TCP protocol, on one hand, the data of the CPU4 are sent to the server, meanwhile, the data on the server 7 are received, real-time exchange of the data is carried out, the server 7 can analyze the data sent by the wireless communication module 6 and display information such as positions, electric quantity, signals and the like, so that an operator can know the operation condition of the equipment more visually.
In this embodiment, the CPU4 may be implemented using a microcontroller or microprocessor with its own Fieldbus controller, or may be implemented using a microcontroller or microprocessor without a Fieldbus controller to extend the Fieldbus controller. As a preferred embodiment, the data processing unit CPU4 employs a Cortex-M0 kernel ultra low power MCU design with dynamic mode of operation as low as 87 μ A/MHz.
Referring to fig. 3, the battery 1 needs to provide a 12V power supply or an external 20V power supply, so that the battery voltage is subjected to voltage reduction processing by the LDO chip AMS117-3.3, the voltage input range is 5-20V, the voltage ripple precision can be within 1%, the capacitance value of C16 is used for filtering sharp waves and eliminating voltage ripples, the capacitance value of C15 is used for decoupling, when the instantaneous power consumption of the CPU4 or 3.3V circuit is too large, the C15 capacitor can be timely supplemented, and the stability of the circuit voltage is ensured.
Referring to fig. 4, the DC/DC power conversion chip adopts XL4005E1, the input voltage can be between 5V-32V, the maximum output current can be 3A, a MOS transistor is built in the XL4005E1, the power is stored in the inductor L1 by continuously switching the SW voltage, the output voltage is controlled to be 3.8V by adjusting the resistance values of R35 and R36, and the capacitance values of C4 and C7 are also used for filtering and decoupling.
Referring to fig. 5, the input isolation module 11 uses the isolation chip PC817, a forward conduction voltage of 1.2V, a reverse voltage of 6V, and power consumption of 75mW, and can control an effective voltage value of the input voltage through calculation of resistance values of R25 and R22. By calculating the resistance value of R28, the brightness of the input status indication LED indicator lamp can be adjusted.
Referring to fig. 6, the output isolation module 10 controls the output of the relay by using S8050, and the magnitude of the amplified current of S8050 can be adjusted by adjusting the values of R7 and R9, because the relay includes an inductive coil inside, and a D1 fast recovery diode is added, so that the back electromotive force generated by the relay during operation can be eliminated, the circuit is protected, and the brightness of the output indication LED lamp can be adjusted by adjusting the resistance value of R7.
Referring to fig. 7, the power detection unit 12 is designed with ultra-low power consumption, the main power supply must be cut off during standby, the core voltage is reserved, the output of the relay is controlled through S8050, R31 is increased to maximally reduce power consumption, and the maximum amplification current of S8050 can be adjusted by adjusting the resistance values of R32 and R33.
Referring to fig. 8, because the CPU communication voltage is not consistent with the communication voltage of the wireless communication module 6, the data communication isolation module 5 adopts the TXB0104PWR chip isolation design, the 1.8V voltage of the TXB0104PWR is obtained from the LDO power supply inside the wireless communication module, the circuit design is greatly saved, and the C28 and the C25 capacitors are used for filtering the voltage ripple interference in the circuit.
Referring to fig. 9, the SIM card may use any one of mobile, communication and telecommunication cards, SRV05-4 is an electrostatic protection chip of the SIM card, which can effectively eliminate 15KV static electricity, R37, R39 and R40 are matching resistors, capacitance values of C5, C6 and C12 reduce interference of circuit communication waveforms, and C9 is a filter capacitor.
Referring to fig. 10, the charging chip of the solar charging module 13 is a CN3763 chip, and CN3763 is a PWM voltage-reducing three-section lithium battery charging management integrated circuit. The charging of the three lithium batteries is managed independently, and the lithium battery charging management system has the advantages of small package, few peripheral components, simplicity in use and the like. CN3763 has trickle, constant current, constant voltage charging mode. D18 is red LED lamp, D19 is green LED lamp, it is bright that red LED (D18) lights to charge, green LED (D19) lights when charging the completion, Q10 is the PMOS pipe, through the continuous switching of CN 3763's DRV pin, give inductance L2 energy storage, through the size of adjusting R4 resistance value, can set up the size of charging current, the capacitance value of C22 and C23 is decoupling capacitor, increase circuit voltage stability.
Referring to fig. 11, the wireless communication module 6 is 7600CE-M module of wireless technologies, which is a core communication network, and has a power supply voltage range of 3.4V to 4.2V, and the data parameters are as follows:
data transmission
LTE CAT4 — uplink maximum rate: 50Mbps, -downstream maximum rate: 150Mbps
TD-SCDMA-uplink maximum number rate: the temperature of the gas is 128Kbps,
-downlink maximum number rate: 384Kbps
TD-HSDPA/HSUPA-uplink maximum number rate: 2.2 Mbps.
And 7-mode and three-network full-communication are supported.
The GPS positioning supports three modes of Beidou, GPS and GLONASS.
Referring to FIG. 12, CPU4 adopts STM32L031F6 chip, and each part of STM32L031F6 has all reached the excellent low-power consumption level through optimizing, and ARM ^ Cortex is followed the super low-power consumption characteristic of a plurality of types of M0+ kernel and STM32 singlechip and combined together, STM32L031F6 microcontroller provides dynamic voltage control, super low-power consumption clock oscillator. The new autonomous peripherals (including USART and I C) share the load of the ARM Cortex-M0+ core, and reduce the number of times of CPU wakeup, thereby contributing to reduction of processing time and power consumption. It also has built-in other value-added features such as 12-bit ADC (hardware oversampling), short wake-up time in ultra-low power mode and communication peripherals that can still work in low power mode, achieving a perfect balance between integration features, high performance and ultra-low power consumption with up to 16 KB flash, 8KB RAM and up to 1 KB embedded EEPROM (no flash emulation), dynamic mode of operation: the speed is as low as 87 muA/MHz, a 32-bit ARM company core processor is adopted, the running speed is higher than that of a traditional 8-bit processor, the stability is higher, the counting is timed by 24 bits, and the speed is more accurate than that of a traditional 8-bit timer and a traditional 16-bit timer.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (3)
1. A signal synchronization device based on no power supply at one place and inconvenient wiring between two places, which is characterized by comprising: the solar charging system comprises a CPU (4), a solar charging module (13), a wireless communication module (6) and a server (7);
the CPU (4) is connected with field equipment (15) through an input isolation module (11) and an output isolation module (10), is connected with a wireless communication module (6) through a serial port (3), and is connected with the battery (1) through an electric quantity detection unit (12);
the solar charging module (13) is connected with the battery (1) and is used for charging the battery (1);
the wireless communication module (6) is connected with the server (7) through a TCP (transmission control protocol);
the input isolation module (11) and the output isolation module (10) are connected with the field device (15) through wall-penetrating type connecting terminals with plugs, the input isolation module (11) adopts an isolation chip, resistors R25 and R22 are arranged to control effective voltage values of input voltage, the brightness of an input state indication LED indicator lamp is adjusted through a resistor R28, the output isolation module (10) adopts a mode that S8050 controls relay output, resistors R7 and R9 are adjusted to change the magnitude of amplification current of the S8050, R31 is arranged to reduce power consumption, the resistance values of R32 and R33 are adjusted to adjust the maximum amplification current of the S8050, a D1 is arranged to rapidly recover a diode to eliminate reverse electromotive force when the relay acts, and a resistor R7 is arranged to adjust the brightness of an output indication LED lamp;
a data communication isolation module (5) is arranged between the CPU (4) and the wireless communication module (6), the data communication isolation module (5) adopts a TXB0104PWR chip isolation design, and the wireless communication module (6) exchanges data with the data communication isolation module (5) and is connected with a server (7) through a TCP (transmission control protocol);
a charging chip of the solar charging module (13) adopts a CN3763 chip, energy is stored in the inductor L2 through the continuous switching of a DRV pin of the CN3763, the magnitude of charging current is set through adjusting the resistance value of R4, and decoupling capacitors C22 and C23 are arranged;
an LDO (low dropout regulator) (2) is arranged between the battery (1) and the CPU (4), and the LDO (2) is used for carrying out voltage reduction processing on voltage;
and a DC/DC (14) is arranged between the battery (1) and the wireless communication module (6), and the DC/DC (14) is used for reducing voltage.
2. Signal synchronization device according to claim 1, characterized in that the CPU (4) is also connected to an input/output status LED indicator (9).
3. The device for synchronizing signals according to claim 1, wherein the wireless communication module (6) is further connected with an operating LED indicator (8).
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| CN111371670B (en) * | 2020-03-10 | 2022-06-28 | 贵州远诚自控科技有限公司 | A connection device based on industrial computer and VPN |
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