CN113126532A - Industrial explosion-proof safety interface and system based on LoRaWAN technology - Google Patents
Industrial explosion-proof safety interface and system based on LoRaWAN technology Download PDFInfo
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- CN113126532A CN113126532A CN201911407388.6A CN201911407388A CN113126532A CN 113126532 A CN113126532 A CN 113126532A CN 201911407388 A CN201911407388 A CN 201911407388A CN 113126532 A CN113126532 A CN 113126532A
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
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Abstract
The invention provides an industrial explosion-proof safety interface and a system based on LoRaWAN technology, comprising: the explosion-proof safety interface circuit is used for signal input and output; the main controller is connected with the explosion-proof safety interface circuit and the LoRaWAN wireless communication module and controls signal transmission; the LoRaWAN wireless communication module is used for receiving and transmitting remote signals; and the configuration interface circuit is connected with the main controller and is used for configuring parameters of the LoRaWAN wireless communication module. The invention realizes the control of the LoRaWAN module to receive and transmit data wirelessly and remotely by programming the main controller, and achieves the purpose of industrial field monitoring and control by the signals input and output by the main controller to the explosion-proof safety interface circuit. The invention can realize the monitoring and control of industrial field data through the explosion-proof safety interface circuit, and can realize the wireless transmission of data with low power consumption, safety and reliability on the premise of explosion-proof safety.
Description
Technical Field
The invention relates to the field of industrial production, in particular to an industrial explosion-proof safety interface and system based on LoRaWAN technology.
Background
With the development of industry, the automation industry should meet explosion-proof safety in addition to electrical safety requirements. For automatic instruments, the most common explosion-proof forms are intrinsic safety type, explosion-proof type and safety-increasing type. Due to the rapid development of electronic technology and the continuous emergence of low-power-consumption electronic devices, the intrinsic safety explosion-proof technology is more widely popularized and applied. Especially, the intrinsically safe explosion-proof instrument, which is an explosion-proof means by suppressing the energy of the ignition source, has been accepted by manufacturers and users because the intrinsically safe explosion-proof form has not only a simple structure and a wide application range, but also the characteristics of easy operation and convenient maintenance.
Under the continuous development of scientific technology, the design requirements of various industries on explosion-proof safety circuits are higher and higher, the use frequency is higher and higher particularly in underground coal mine operation and petrochemical industry, and the requirements on parameters are gradually improved. The safety explosion-proof circuit is an important safety technical measure for ensuring the safety of social production, and how to ensure that data is remotely transmitted on the premise of achieving explosion-proof safety so as to realize monitoring and control of industrial equipment becomes one of the problems which need to be solved by technical personnel in the field.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide an industrial explosion-proof safety interface and system based on LoRaWAN technology, which are used for achieving explosion-proof safety of an industrial production remote monitoring system.
In order to achieve the above objects and other related objects, the present invention provides an industrial explosion-proof safety interface based on LoRaWAN technology, including at least:
the anti-explosion safety interface circuit comprises an anti-explosion safety interface circuit, a main controller, a LoRaWAN wireless communication module and a configuration interface circuit;
the explosion-proof safety interface circuit is connected with the main controller and is used for inputting and outputting signals;
the main controller is connected with the explosion-proof safety interface circuit and the LoRaWAN wireless communication module and controls the explosion-proof safety interface circuit and the LoRaWAN wireless communication module to transmit signals;
the LoRaWAN wireless communication module is used for receiving and transmitting remote signals;
the configuration interface circuit is connected with the main controller, and the main controller performs parameter configuration on the LoRaWAN wireless communication module based on the configuration information received from the configuration interface circuit.
Optionally, the explosion-proof safety interface circuit includes a signal input interface and a signal output interface; the signal input interface receives production information and transmits the production information to the main controller; and the signal output interface acquires and outputs a control signal from the main controller.
Optionally, the production information includes any one or more of a combination of temperature, flow rate, pressure and humidity.
More optionally, the explosion-proof safety interface circuit includes a serial interface, and the serial interface is connected to the main controller and used for serial communication.
More optionally, the serial interface comprises an RS485 interface.
Optionally, the industrial explosion-proof safety interface based on the LoRaWAN technology further comprises a power module, wherein the power module is the explosion-proof safety interface circuit, the main controller and the LoRaWAN wireless communication module supply power.
More optionally, the power module includes a first power conversion unit and a second power conversion unit, where the first power conversion unit receives an ac power and converts the ac power into a first dc power; the second power supply conversion unit is connected with the first power supply conversion unit and converts the first direct-current power supply into a second direct-current power supply; wherein the voltage values of the AC power supply, the first DC power supply and the second DC power supply are sequentially reduced.
More optionally, the first power conversion unit includes an ac-to-dc converter circuit and a dc-down circuit.
More optionally, the second power conversion unit includes a low dropout linear voltage regulator circuit.
Optionally, the configuration interface circuit comprises a USB interface.
More optionally, the configuration interface circuit further includes a power supply unit, and the power supply unit may supply power to the main controller when the power supply module does not supply power.
In order to achieve the above objects and other related objects, the present invention further provides an industrial explosion-proof safety system based on LoRaWAN technology, including at least:
the production equipment comprises an industrial explosion-proof safety interface based on the LoRaWAN technology, a LoRaWAN gateway and a server;
the production equipment is connected with the industrial explosion-proof safety interface based on the LoRaWAN technology, and signals are transmitted through the industrial explosion-proof safety interface based on the LoRaWAN technology;
the LoRaWAN gateway is communicated with the industrial explosion-proof safety interface based on the LoRaWAN technology and the server;
the server monitors the production equipment and generates a control signal for the production equipment based on the monitored information.
As described above, the industrial explosion-proof safety interface and system based on the LoRaWAN technology of the present invention have the following beneficial effects:
the LoRaWAN technology-based industrial explosion-proof safety interface and system control LoRaWAN module wireless remote data receiving and transmitting through programming of the main controller, and achieve the purposes of industrial field monitoring and control through processing signals input and output by the explosion-proof safety interface circuit through the main controller. The industrial explosion-proof safety interface and the system based on the LoRaWAN technology can realize the monitoring and control of industrial field data through an explosion-proof safety interface circuit; the production information measured in the industrial field is processed through the main controller through the signal input interface, and then the LoRaWAN module is controlled by the main controller to transmit the information to the cloud, so that data analysis and visualization are carried out at the cloud; still can realize down sending the control signal that reaches the industrial control purpose from the high in the clouds to LoRaWAN module, gather by main control unit and handle this control signal and export the signal output part again, and then realize the state control to production facility, can reach and realize data low-power consumption, safe, reliable wireless transmission under explosion-proof safe prerequisite.
Drawings
Fig. 1 is a schematic structural diagram of an industrial explosion-proof safety interface based on the LoRaWAN technology according to the present invention.
Fig. 2 is a schematic structural diagram of a first power conversion unit according to the present invention.
Fig. 3 is a schematic structural diagram of a second power conversion unit according to the present invention.
Fig. 4 is a schematic structural diagram of an industrial explosion-proof safety interface based on the LoRaWAN technology according to the present invention.
Fig. 5 is a schematic structural diagram of the industrial explosion-proof safety system based on the LoRaWAN technology.
Fig. 6 is a schematic diagram showing an operation principle of the industrial explosion-proof safety system based on the LoRaWAN technology.
Fig. 7 is a schematic diagram showing another working principle of the industrial explosion-proof safety system based on the LoRaWAN technology.
Description of the element reference numerals
Industrial explosion-proof safety interface based on LoRaWAN technology
11 explosion-proof safety interface circuit
111 signal input interface
112 signal output interface
113 serial interface
12 Main controller
13 LoRaWAN wireless communication module
14 configuration interface circuit
15 power supply module
151 first power conversion unit
151a AC-DC converting circuit
151b DC voltage reduction circuit
152 second power conversion unit
2 production facility
3 LoRaWAN gateway
4 server
Industrial explosion-proof safety system based on LoRaWAN technology
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Please refer to fig. 1 to 7. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Example one
As shown in fig. 1, this embodiment provides an industrial explosion-proof safety interface 1 based on the LoRaWAN technology, where the industrial explosion-proof safety interface 1 based on the LoRaWAN technology includes:
explosion-proof safe interface circuit 11, main control unit 12, LoRaWAN wireless communication module 13 and configuration interface circuit 14.
As shown in fig. 1, the explosion-proof safety interface circuit 11 is connected to the main controller 12 for inputting and outputting signals.
Specifically, the explosion-proof safety interface circuit 11 is used for being connected with production equipment to realize signal input or output to the production equipment. In this embodiment, the explosion-proof safety interface circuit 11 includes a signal input interface 111 and a signal output interface 112. The signal input interface 111 receives analog or digital production information and transmits the production information to the main controller 12, where the production information includes, but is not limited to, temperature, flow, pressure, and humidity, and any parameter information of an industrial site is applicable to the present invention, which is not described herein again. In this embodiment, the signal input interface 111 transmits a signal to the main controller 12 through an ac input optical coupler. The signal output interface 112 obtains an analog or digital control signal from the main controller 12 and outputs the control signal, and the signal output interface 112 is connected to a relay, a solenoid valve, or various switches, for example, to control the operation of the production equipment.
It should be noted that the explosion-proof safety interface circuit 11 is an interface circuit with explosion-proof safety certification, the explosion-proof safety certification includes an intrinsic safety type, an explosion-proof type and an increased safety type, in this embodiment, the explosion-proof safety interface circuit 11 meets the explosion-proof certification of intrinsic safety type electrical equipment, the intrinsic safety explosion-proof technology is actually a low-power design technology, and aiming at that electric sparks and thermal effects are main explosion sources causing explosion of explosive hazardous gases, the intrinsic safety technology realizes explosion-proof by limiting two possible explosion sources of electric sparks and thermal effects. The explosion-proof safety interface circuit 11 of the invention starts from energy limitation, reliably limits the voltage and current in the circuit within an allowable range, and prevents electric sparks and heat effects generated under the conditions of normal work or faults such as short circuit, component damage and the like from causing the explosion of dangerous gases possibly existing around the circuit. In practical use, the explosion-proof safety interface circuit 11 can satisfy explosion-proof certification of explosion-proof or safety-added electrical equipment, which is not described herein.
As shown in fig. 1, the main controller 12 is connected to the explosion-proof safety interface circuit 11 and the LoRaWAN wireless communication module 13, and controls the explosion-proof safety interface circuit 11 and the LoRaWAN wireless communication module 12 to transmit signals.
Specifically, the main controller 12 receives production information from the explosion-proof safety interface circuit 11 and performs long-distance transmission through the LoRaWAN wireless communication module 12; meanwhile, the main controller 12 obtains a control signal from the LoRaWAN wireless communication module 12 and transmits the control signal to a control device (including but not limited to a relay, a solenoid valve, or various switches) of the production equipment through the explosion-proof safety interface circuit 11.
As an implementation manner of the present invention, the industrial explosion-proof safety interface 1 based on the LoRaWAN technology further includes an indicator light, and the indicator light is connected to the main controller 12 and controlled by the main controller 12 to turn on or off.
As shown in fig. 1, the LoRaWAN wireless communication module 13 is configured to receive and transmit remote signals.
Specifically, LoRaWAN is a set of communication protocols and system architecture designed for LoRa long-distance communication network, and the network architecture thereof is a typical star topology. The LoRa technology uses a spread spectrum modulation technology, can demodulate noise lower than 20dB, ensures high-sensitivity and reliable network connection, improves network efficiency and eliminates interference; the star topology of the LoRaWAN protocol eliminates synchronization overhead and hop count, reduces power consumption and allows multiple concurrent applications to run on the network; the communication distance of the LoRa technology is long, the LoRa technology can work without a repeater, and the overall ownership cost is reduced; and the LoRa technology has stronger expandability and higher cost performance for embedded application.
As shown in fig. 1, the configuration interface circuit 14 is connected to the main controller 12, and the main controller 12 performs parameter configuration on the LoRaWAN wireless communication module 13 based on the configuration information received from the configuration interface circuit 14.
Specifically, in this embodiment, the configuration interface circuit 14 adopts a USB interface, and configuration information is input to the main controller 12 through the USB interface, and further, the configuration interface circuit 14 is set as a USB-type c interface. The main controller 12 controls the LoRaWAN wireless communication module 13 to perform wireless remote transmission based on the configuration information.
It should be noted that the configuration interface circuit 14 adopts any interface for data transmission, and is not limited to this embodiment.
As an implementation manner of the present invention, the configuration interface circuit 14 further includes a power supply unit, and the power supply unit supplies power to the main controller 12. Specifically, when the industrial explosion-proof safety interface 1 based on the LoRaWAN technology is not connected to a power supply, the power supply unit in the configuration interface circuit 14 supplies power to the main controller 12, and the industrial explosion-proof safety interface 1 based on the LoRaWAN technology can complete configuration on line (for example, an office of an engineer) without being electrically connected to production equipment in a workshop to complete configuration and debugging, so that the configuration is convenient and efficient.
As shown in fig. 1, as an implementation manner of the present invention, the industrial explosion-proof safety interface 1 based on the LoRaWAN technology further includes a power module 15, and the power module 15 supplies power to the explosion-proof safety interface circuit 11, the main controller 12, and the LoRaWAN wireless communication module 13.
Specifically, in this embodiment, the power module 15 is connected to a 24V industrial ac power supply, and converts the 24V industrial ac power supply into a dc power supply required by the explosion-proof safety interface circuit 11, the main controller 12, and the LoRaWAN wireless communication module 13. The power module 15 includes a first power conversion unit 151 and a second power conversion unit 152. The first power conversion unit 151 receives an ac power and converts the ac power into a first dc power. The second power conversion unit 152 is connected to the first power conversion unit 151, and converts the first dc power into a second dc power; wherein the voltage values of the AC power supply, the first DC power supply and the second DC power supply are sequentially reduced.
More specifically, the first power conversion unit 151 includes an ac-dc converter circuit 151a and a dc-dc voltage reduction circuit 151 b. As shown in fig. 2, the ac-to-dc converter 151a includes a transient diode TVS1, a first inductor L1, a first diode D1, a first capacitor C1, and a second capacitor C2. The input power (AC power AC) is connected to the first input end and the second input end of the AC-dc converter circuit 151a (the second input end is grounded to GND 1); two ends of the transient diode TVS1 are respectively connected to the first input end and the second input end of the ac-dc converter circuit 151 a; one end of the first inductor L1 is connected to the first input end of the ac-dc converter circuit 151a, and the other end is connected to the anode of the first diode D1; the cathode of the first diode D1 is connected to GND1 through the first capacitor C1; the second capacitor C2 is connected in parallel with the first capacitor C1. The upper plate output power VCC1 of second electric capacity C2, power VCC1 are DC power supply, and with AC power supply AC's value equals, promptly power VCC1 is 24V DC power supply. The dc voltage dropping circuit 151b includes a voltage dropping regulator, a first resistor R1, a second diode D2 (zener diode), a second inductor L2, a second resistor R2, a third resistor R3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, and a third diode D3. The step-down voltage regulator receives the power supply VCC1 and outputs the power supply after voltage reduction; a first end VIN of the step-down voltage regulator is connected with the power supply VCC1, a second end SHDN is connected with the power supply VCC1 after passing through the first resistor R1, a third end SW and a fourth end CB are connected through the third capacitor C3, a fifth end FB is connected with a connecting node of the second resistor R2 and the third resistor R3, and a sixth end GND is grounded GND 1; in this embodiment, the step-down voltage regulator is implemented by using an LMR16006 chip, and any step-down chip or circuit is suitable for use in practical use, which is not described herein. The cathode of the second diode D2 is connected with the output end of the step-down voltage regulator, and the anode is grounded GND 1. A first end of the second inductor L2 is connected with a cathode of the second diode D2; the second resistor R2 and the third resistor R3 are connected in series between the second end of the second inductor L2 and ground GND 1. The fourth capacitor C4, the fifth capacitor C5 and the sixth capacitor C6 are connected in parallel, one end of the fourth capacitor C4 is connected to the second end of the second inductor L2, and the other end of the fourth capacitor C5 is grounded to GND 1. The anode of the third diode D3 is connected to the second end of the second inductor L2, and the cathode of the third diode D3 outputs the first direct-current power supply VCC 2; in this embodiment, the first dc power VCC2 is a 5V dc power, and in practical use, the voltage value of the first dc power VCC2 may be set according to actual needs, which is not limited to this embodiment.
More optionally, the second power conversion unit 152 includes a low dropout linear voltage regulator circuit, a seventh capacitor C7 and an eighth capacitor C8. The first direct current power VCC2 is connected to the first input terminal and the second input terminal of the second power conversion unit 152 (the second input terminal is grounded to GND 1). The low dropout linear regulator receives the first direct current power supply VCC2, and outputs the voltage after voltage reduction; the first end Vi of the low dropout regulator is connected to the first input end of the second power conversion unit 152, the second end G is grounded GND1, and the third end Vo outputs the second dc power VCC 3. The seventh capacitor C7 and the eighth capacitor C8 are connected in parallel, one end of the seventh capacitor C7 is connected to the output end of the low dropout regulator, and the other end of the seventh capacitor C8 is grounded to GND 1. In this embodiment, the second dc power VCC3 is a 3.3V dc power, and in practical use, the voltage value of the second dc power VCC3 may be set according to practical needs, which is not limited to this embodiment.
In this embodiment, a 5V dc power is provided to the explosion-proof safety interface circuit 11, and a 3.3V dc power is provided to the main controller 12 and the LoRaWAN wireless communication module 13.
Example two
As shown in fig. 4, the present embodiment provides an industrial explosion-proof safety interface 1 based on the LoRaWAN technology, which is different from the first embodiment in that the explosion-proof safety interface circuit 11 includes a serial interface 113.
Specifically, the serial interface 113 is connected to the main controller 12, and is configured to implement serial communication, that is, to transmit production information and control signals. The serial interface 113 includes, but is not limited to, an RS232C interface, an RS422 interface, and an RS485 interface, and any serial interface applicable to industrial production is applicable to the present invention, which is not described herein again.
It should be noted that the serial interface 113 and the signal input interface 111 and the signal output interface 112 in the first embodiment may be arranged alternatively, or may be arranged in the explosion-proof safety interface circuit 11 at the same time.
EXAMPLE III
As shown in fig. 5, the present embodiment provides an industrial explosion-proof safety system 5 based on the LoRaWAN technology, where the industrial explosion-proof safety system 5 based on the LoRaWAN technology includes:
production facility 2, industrial explosion-proof safe interface 1 based on LoRaWAN technique, LoRaWAN gateway 3 and server 4.
As shown in fig. 5, the production equipment 2 is connected to the industrial explosion-proof safety interface 1 based on the LoRaWAN technology, and signals are transmitted through the industrial explosion-proof safety interface 1 based on the LoRaWAN technology.
Specifically, the production device 2 may be any device that needs to be remotely monitored, and details thereof are not repeated herein.
As shown in fig. 5, the industrial explosion-proof safety interface 1 based on the LoRaWAN technology transmits signals to the production equipment 2.
Specifically, the internal structure and the working principle of the industrial explosion-proof safety interface 1 based on the LoRaWAN technology are as described in the first embodiment or the second embodiment, which are not repeated herein.
As shown in fig. 5, the LoRaWAN gateway 3 communicates with the industrial explosion-proof security interface 1 based on the LoRaWAN technology and the server 4.
Specifically, the LoRaWAN technology-based industrial explosion-proof safety interface 1 realizes the network access of terminal equipment through the LoRaWAN gateway 3, and the LoRaWAN gateway 3 enables the LoRaWAN technology-based industrial explosion-proof safety interface 1 and the server 4 to realize communication based on a specific communication protocol. The LoRaWAN wireless communication module 13 can be controlled to upload production information to the LoRaWAN gateway 3 through processing of the main controller 12, and then the LoRaWAN gateway 3 is uploaded to the server 4, so that the purpose that the production information is displayed on a cloud platform is achieved. The control signal can be input on the cloud platform and issued through the server 4, the control signal is issued to the LoRaWAN wireless communication module 13 through the LoRaWAN gateway 3, and then issued to the explosion-proof safety interface circuit 11 through the processing of the main controller 12, so that the purpose of realizing output control on the cloud platform is achieved.
As shown in fig. 5, the server 4 monitors the production apparatus 2 and generates a control signal for the production apparatus 2 based on the monitored information.
Specifically, the server 4 processes the signal sent from the industrial explosion-proof safety interface 1 based on the LoRaWAN technology, and compares the processed signal with a preset threshold value to generate a control signal of the production equipment 2, so as to control the production equipment 2 to perform production operation safely, normally and orderly.
As shown in fig. 6, when the industrial explosion-proof safety interface 1 based on the LoRaWAN technology adopts the structure of the first embodiment, the working principle of the industrial explosion-proof safety system 5 based on the LoRaWAN technology is as follows:
the production information is transmitted to the main controller 12 through the signal input interface 111, the main controller 12 acquires and processes signals through identification, and then controls the LoRaWAN wireless communication module 13 to wirelessly transmit production information data to the LoRaWAN gateway 3 through a LoRaWAN network through a transmission instruction, and the LoRaWAN gateway 3 transmits the production information data to the server 4 so as to be displayed on a cloud platform.
Control signals are input through a cloud platform, sent to the LoRaWAN gateway 3 by the server 4 and sent to the LoRaWAN wireless communication module 13 through the LoRaWAN network, and after the main controller 12 obtains the control signals in the LoRaWAN wireless communication module 13 through commands, the control signals are output to the relay in the production equipment 2 through the signal output interface 112, so that the control purpose is achieved.
As shown in fig. 7, when the industrial explosion-proof safety interface 1 based on the LoRaWAN technology adopts the structure of the second embodiment, the working principle of the industrial explosion-proof safety system 5 based on the LoRaWAN technology is as follows:
the production information is transmitted to the main controller 12 through the serial interface 113, the main controller 12 acquires and processes signals through identification, and then controls the LoRaWAN wireless communication module 13 to wirelessly transmit input signal data to the LoRaWAN gateway 3 through a LoRaWAN network through a transmission instruction, and the LoRaWAN gateway 3 transmits the input signal data to the server 4, so that the input signal data is displayed on a cloud platform.
Control signals are input through a cloud platform, sent to the LoRaWAN gateway 3 by the server 4 and sent to the LoRaWAN wireless communication module 13 through the LoRaWAN network, and after the main controller 12 obtains the control signals in the LoRaWAN wireless communication module 13 through commands, the control signals are output to the relay in the production equipment 2 through the serial interface 113, so that the purpose of serial port monitoring is achieved.
In summary, the present invention provides an industrial explosion-proof safety interface and system based on LoRaWAN technology, wherein the interface includes: the anti-explosion safety interface circuit comprises an anti-explosion safety interface circuit, a main controller, a LoRaWAN wireless communication module and a configuration interface circuit; the explosion-proof safety interface circuit is connected with the main controller and is used for inputting and outputting signals; the main controller is connected with the explosion-proof safety interface circuit and the LoRaWAN wireless communication module and controls the explosion-proof safety interface circuit and the LoRaWAN wireless communication module to transmit signals; the LoRaWAN wireless communication module is used for receiving and transmitting remote signals; the configuration interface circuit is connected with the main controller, and the main controller performs parameter configuration on the LoRaWAN wireless communication module based on the configuration information received from the configuration interface circuit. The system comprises: the production equipment comprises an industrial explosion-proof safety interface based on the LoRaWAN technology, a LoRaWAN gateway and a server; the production equipment is connected with the industrial explosion-proof safety interface based on the LoRaWAN technology, and signals are transmitted through the industrial explosion-proof safety interface based on the LoRaWAN technology; the LoRaWAN gateway is communicated with the industrial explosion-proof safety interface based on the LoRaWAN technology and the server; the server monitors the production equipment and generates a control signal for the production equipment based on the monitored information. The industrial explosion-proof safety interface and the system based on the LoRaWAN technology realize the control of the LoRaWAN module to wirelessly and remotely receive and transmit data by programming the main controller, and achieve the purposes of industrial field monitoring and control by the main controller through signals input and output by the explosion-proof safety interface circuit. The industrial explosion-proof safety interface and the system based on the LoRaWAN technology can realize the monitoring and control of industrial field data through an explosion-proof safety interface circuit; production information measured in an industrial field is transmitted to a cloud end through a LoRaWAN module through a signal input interface, so that data analysis and visualization are carried out at the cloud end; still can realize issuing the control signal that reaches the industrial control purpose from the high in the clouds and export relay output part to the LoRaWAN module, and then realize control relay on-off state, can reach and realize data low-power consumption, safe, reliable wireless transmission under explosion-proof safe prerequisite. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (12)
1. The industrial explosion-proof safety interface based on the LoRaWAN technology is characterized by at least comprising the following components in parts by weight:
the anti-explosion safety interface circuit comprises an anti-explosion safety interface circuit, a main controller, a LoRaWAN wireless communication module and a configuration interface circuit;
the explosion-proof safety interface circuit is connected with the main controller and is used for inputting and outputting signals;
the main controller is connected with the explosion-proof safety interface circuit and the LoRaWAN wireless communication module and controls the explosion-proof safety interface circuit and the LoRaWAN wireless communication module to transmit signals;
the LoRaWAN wireless communication module is used for receiving and transmitting remote signals;
the configuration interface circuit is connected with the main controller, and the main controller performs parameter configuration on the LoRaWAN wireless communication module based on the configuration information received from the configuration interface circuit.
2. The LoRaWAN technology-based industrial explosion-proof safety interface of claim 1, wherein: the explosion-proof safety interface circuit comprises a signal input interface and a signal output interface; the signal input interface receives production information and transmits the production information to the main controller; and the signal output interface acquires and outputs a control signal from the main controller.
3. The LoRaWAN technology-based industrial explosion-proof safety interface of claim 2, wherein: the production information includes any one or more of a combination of temperature, flow rate, pressure and humidity.
4. The industrial explosion-proof safety interface based on the LoRaWAN technology according to any one of claims 1 to 3, characterized in that: the explosion-proof safety interface circuit comprises a serial interface, and the serial interface is connected with the main controller and used for serial port communication.
5. The LoRaWAN technology-based industrial explosion-proof safety interface of claim 4, wherein: the serial interface comprises an RS485 interface.
6. The LoRaWAN technology-based industrial explosion-proof safety interface of claim 1, wherein: the industrial explosion-proof safety interface based on the LoRaWAN technology further comprises a power module, wherein the power module is used for supplying power to the explosion-proof safety interface circuit, the main controller and the LoRaWAN wireless communication module.
7. The LoRaWAN technology-based industrial explosion-proof safety interface of claim 6, wherein: the power supply module comprises a first power supply conversion unit and a second power supply conversion unit, wherein the first power supply conversion unit receives an alternating current power supply and converts the alternating current power supply into a first direct current power supply; the second power supply conversion unit is connected with the first power supply conversion unit and converts the first direct-current power supply into a second direct-current power supply; wherein the voltage values of the AC power supply, the first DC power supply and the second DC power supply are sequentially reduced.
8. The LoRaWAN technology-based industrial explosion-proof safety interface of claim 7, wherein: the first power conversion unit comprises an alternating current-to-direct current circuit and a direct current voltage reduction circuit.
9. The LoRaWAN technology-based industrial explosion-proof safety interface of claim 7, wherein: the second power conversion unit comprises a low dropout linear voltage regulator circuit.
10. The LoRaWAN technology-based industrial explosion-proof safety interface of claim 1, wherein: the configuration interface circuit includes a USB interface.
11. Industrial explosion-proof safety interface based on LoRaWAN technology according to claim 1 or 10, characterized in that: the configuration interface circuit further comprises a power supply unit, and the power supply unit supplies power to the main controller.
12. An industrial explosion-proof safety system based on LoRaWAN technology, characterized in that the industrial explosion-proof safety system based on LoRaWAN technology at least comprises:
production equipment, the LoRaWAN technology-based industrial explosion-proof safety interface, the LoRaWAN gateway and the server according to any one of claims 1 to 11;
the production equipment is connected with the industrial explosion-proof safety interface based on the LoRaWAN technology, and signals are transmitted through the industrial explosion-proof safety interface based on the LoRaWAN technology;
the LoRaWAN gateway is communicated with the industrial explosion-proof safety interface based on the LoRaWAN technology and the server;
the server monitors the production equipment and generates a control signal for the production equipment based on the monitored information.
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