CN113985193A - Wireless power failure monitoring system and monitoring method - Google Patents

Wireless power failure monitoring system and monitoring method Download PDF

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Publication number
CN113985193A
CN113985193A CN202111129350.4A CN202111129350A CN113985193A CN 113985193 A CN113985193 A CN 113985193A CN 202111129350 A CN202111129350 A CN 202111129350A CN 113985193 A CN113985193 A CN 113985193A
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power supply
command
resistor
current power
alternating current
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CN202111129350.4A
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CN113985193B (en
Inventor
李端峰
李永汉
何湘桂
户磊
李奎元
孟志强
周华安
刘小可
童轩
陈励勤
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Zhongjin Peike Construction Co ltd
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Zhongjin Peike Construction Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423Input/output
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/24Pc safety
    • G05B2219/24215Scada supervisory control and data acquisition

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention relates to the technical field of monitoring of electromechanical equipment in an expressway tunnel, and discloses a wireless power failure monitoring system and a monitoring method, wherein the wireless power failure monitoring system comprises a control host, a gateway, a wireless communication module and a monitoring terminal; the monitoring terminal comprises a direct current power supply detection circuit, an alternating current power supply detection circuit and a switching value output control circuit, wherein the direct current power supply detection circuit, the alternating current power supply detection circuit and the switching value output control circuit are all connected with the electromechanical device to be tested; the monitoring terminal can realize functions of data transparent transmission, direct current power supply detection, alternating current power supply detection and switching value output control based on the command of the control host, can accurately monitor the power failure of the electromechanical equipment in the tunnel, and meets the requirements of high efficiency and intelligent operation and maintenance of the electromechanical equipment in the tunnel.

Description

Wireless power failure monitoring system and monitoring method
Technical Field
The invention relates to the technical field of monitoring of electromechanical equipment in an expressway tunnel, in particular to a wireless power failure monitoring system and a monitoring method.
Background
The total length of the expressway in China is rapidly increasing, the expressway is widely extended to mountainous areas, and the number of tunnels is continuously increased. The tunnel internal environment is harsh, for example, the situations of moisture, water seepage, oil stain, dust accumulation, tail gas and the like often occur, and the harsh environment easily causes frequent power failure of the electromechanical equipment. When the electromechanical equipment in the tunnel has power failure, the equipment cannot work normally, if the electromechanical equipment cannot be found and maintained in time, the accumulated increase of failure points also easily enables the electromechanical system of the whole tunnel to be totally paralyzed, tunnel safety accidents are easily caused, and casualties and huge economic losses are caused.
At present, most of electromechanical devices in tunnels utilize the self-checking function of the electromechanical devices, and most of electromechanical devices adopt a wired mode to transmit data of fault states. When a tunnel electromechanical device fails, a remote monitoring room in a tunnel management station often only reflects that a system or some electromechanical device cannot be used, and is difficult to judge whether a wired communication line fails or the device fails, and when the device fails, it is also difficult to judge whether the device fails in power or functional, and the position of the failure cannot be accurately determined. Troubleshooting of electromechanical equipment can only be performed one by one on site through a walking tunnel, and sometimes, a professional is required to go back and forth many times to troubleshoot the fault due to the fact that the fault reason and the fault location are unknown in advance, and time and labor are consumed. At present, no special monitoring system is used for wireless power failure monitoring of electromechanical equipment, so that a wireless monitoring terminal capable of accurately monitoring power failure of electromechanical equipment in a tunnel is urgently needed, and the requirements of high efficiency and intelligent operation and maintenance of tunnel electromechanical equipment are met.
Disclosure of Invention
The invention provides a wireless power failure monitoring system and a monitoring method, which aim to solve the problems in the prior art.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a wireless power failure monitoring system, comprising: the system comprises a control host, a gateway, a wireless communication module and a monitoring terminal, wherein the monitoring terminal is arranged in a tunnel to be tested and is connected with electromechanical equipment to be tested, the wireless communication module is arranged on the monitoring terminal, the gateway is arranged at the tunnel mouth of the tunnel to be tested and is in wireless communication connection with the wireless communication module, and the control host is in serial communication connection with the gateway through a bus;
the monitoring terminal comprises a direct current power supply detection circuit, an alternating current power supply detection circuit and a switching value output control circuit, and the direct current power supply detection circuit, the alternating current power supply detection circuit and the switching value output control circuit are all connected with the electromechanical device to be detected;
the direct current power supply detection circuit is used for acquiring the direct current power supply state of the electromechanical device to be detected and sending the detected direct current power supply state to the gateway through the communication module;
the alternating current power supply detection circuit is used for acquiring the alternating current power supply state of the electromechanical device to be detected and sending the detected alternating current power supply state to the gateway through the communication module;
the switching value output control circuit is used for controlling the switching value of the electromechanical equipment;
the gateway is used for transmitting a data transparent transmission command, a direct current power supply detection command, an alternating current power supply detection command and a switching value output control command generated by the control host to the monitoring terminal.
Optionally, the switching value output control circuit includes a resistor R1, a photocoupler To1, a resistor R2, a resistor R3, a second triode, a resistor R4, and a capacitor C1, an input side of the photocoupler To1 is a first light emitting diode, and an output side of the photocoupler To1 is a first triode;
the first end of the resistor R1 is connected with a GPA1 pin, the second end of the resistor R1 is connected with the anode of the first light-emitting diode, the cathode of the first light emitting diode is grounded, the collector of the first triode is connected with a 12V power supply, the emitter of the first triode is connected with the first end of the resistor R2, the second end of the resistor R2 is connected with the base of the second triode, the second end of the resistor R2 is connected with the first end of the resistor R3, the second end of the resistor R3 is connected with the emitter of the second triode, the second end of the resistor R3 is grounded, the collector of the second triode is connected with the first end of the resistor R4, the second end of the resistor R4 is connected to the second end of the resistor R3, the first end of the resistor R4 is further connected to the first end of the capacitor C1, and the second end of the capacitor C1 is connected to the two ends of the resistor R4.
Optionally, the dc power supply detection circuit includes a resistor R5, a photo-coupler Td1, a resistor R6, a resistor R7, and a capacitor C2, an input side of the photo-coupler Td1 is a second light emitting diode, and an output side of the photo-coupler Td1 is a third triode;
the first end of resistance R5 is the positive input end, the second end of resistance R5 with the second emitting diode's positive pole is connected, the negative pole of second emitting diode is the negative input end, the collecting electrode of third triode with the first end of resistance R6 is connected, the emitter ground of third triode, the second end and the 3.3 volt power connection of resistance R6, the first end of resistance R6 still with the first end of electric capacity C2 and the first end of resistance R7 are connected, electric capacity C2 ground connection, the second end and the GPB1 pin of resistance R7 are connected.
Optionally, the alternating current power supply detection circuit includes a diode D3, a resistor R8, a resistor R9, a capacitor C3, a photocoupler Ta1, a resistor R10, a capacitor C4, and a resistor R11, an input side of the photocoupler Ta1 is a third light emitting diode, and an output side of the photocoupler Ta1 is a fourth triode;
the positive pole of diode D3 is alternating current positive pole input end, diode D3's negative pole with resistance R8's first end is connected, resistance R8's second end with electric capacity C3's first end with resistance R9's first end is connected, electric capacity C3's second end is alternating current negative pole input end, resistance R9's second end with third emitting diode's positive pole is connected, third emitting diode's negative pole with electric capacity C3's second end is connected, the collector of fourth triode with resistance R10's first end, resistance R11's first end and electric capacity C4's first end are connected, the emitter ground of fourth triode, resistance R10's second end is connected with 3.3 volt power supply, resistance R11's second end is connected with GPB5 pin, electric capacity C4's second end ground.
In a second aspect, an embodiment of the present application further provides a wireless power failure monitoring method applied to the wireless power failure monitoring system in the first aspect, including:
the control host sends a command to the monitoring terminal through the gateway;
the monitoring terminal receives the command through the wireless communication module, transmits data to be transparently transmitted, which is contained in the data transparent transmission command, to the on-site electromechanical device to be tested through the 485 external port under the condition that the command is the data transparent transmission command, and transmits the returned data to the gateway if the on-site electromechanical device to be tested has data returned to the monitoring terminal through the 485 external port;
under the condition that the command is a direct current power supply detection command, controlling a direct current power supply detection circuit to detect the direct current power supply state of the on-site electromechanical equipment to be detected, which is powered by direct current, and returning the direct current power supply state to the gateway;
and under the condition that the command is an alternating current power supply detection command, controlling an alternating current power supply detection circuit to detect the alternating current power supply state of the electromechanical device to be detected on site powered by alternating current, and returning the alternating current power supply state to the gateway.
Optionally, when the command is a terminal fault diagnosis command, the monitoring terminal performs fault diagnosis on itself and returns terminal fault state information to the gateway.
Optionally, in a case that the command is a parameter configuration command, the monitoring terminal configures its own wireless networking ID and communication network parameters, and performs system restart on the terminal after configuration.
Optionally, the command carries a wireless networking ID, and after the monitoring terminal receives the command through the wireless communication module, the method further includes:
and the monitoring terminal judges whether the wireless networking ID contained in the command is the same as the wireless networking ID of the monitoring terminal, and if the wireless networking ID in the command is the same as the wireless networking ID of the monitoring terminal, the monitoring terminal executes the operation corresponding to the command.
Has the advantages that:
the wireless power failure monitoring system comprises a control host, a gateway, a wireless communication module and a monitoring terminal, wherein the monitoring terminal comprises a direct current power supply detection circuit, an alternating current power supply detection circuit and a switching value output control circuit, so that the monitoring terminal can realize the functions of data transmission, direct current power supply detection, alternating current power supply detection and switching value output control based on the command of the control host, can accurately monitor the power failure of electromechanical equipment in a tunnel, and meets the requirements of high efficiency and intelligent operation and maintenance of the electromechanical equipment in the tunnel.
Drawings
FIG. 1 is a block diagram of a wireless power failure monitoring system in accordance with a preferred embodiment of the present invention;
FIG. 2 is a block diagram of a monitoring terminal in accordance with a preferred embodiment of the present invention;
FIG. 3 is a circuit diagram of a 1-way switching value output control circuit according to a preferred embodiment of the present invention;
FIG. 4 is a circuit for detecting 1-way DC power supply according to a preferred embodiment of the present invention;
FIG. 5 is a circuit for detecting 1-way AC power supply according to a preferred embodiment of the present invention;
fig. 6 is a flowchart of a wireless power failure monitoring method according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present application provides a wireless power failure monitoring system, including: the system comprises a control host, a gateway, a wireless communication module and a monitoring terminal, wherein the monitoring terminal is arranged in a tunnel to be tested and is connected with electromechanical equipment to be tested, the wireless communication module is arranged on the monitoring terminal, the gateway is arranged at the tunnel opening of the tunnel to be tested and is in wireless communication connection with the wireless communication module, and the control host is in serial communication connection with the gateway through a bus;
the monitoring terminal comprises a direct current power supply detection circuit, an alternating current power supply detection circuit and a switching value output control circuit, wherein the direct current power supply detection circuit, the alternating current power supply detection circuit and the switching value output control circuit are all connected with the electromechanical device to be tested;
the direct current power supply detection circuit is used for acquiring the direct current power supply state of the electromechanical device to be detected and sending the detected direct current power supply state to the gateway through the communication module;
the alternating current power supply detection circuit is used for acquiring the alternating current power supply state of the electromechanical device to be detected and sending the detected alternating current power supply state to the gateway through the communication module;
the switching value output control circuit is used for controlling the switching value of the electromechanical equipment;
the gateway is used for transmitting a data transparent transmission command, a direct current power supply detection command, an alternating current power supply detection command and a switching value output control command generated by the control host to the monitoring terminal.
In this embodiment, the control host and the gateway are connected through serial communication via a bus, and the bus used may be RS485, CAN, or PROFIBUS, which is only an example and is not limited herein.
In this embodiment, wireless communication module is loRa wireless communication module, through adopting loRa wireless communication's mode, has solved wired collection mode wiring complicacy, construction difficulty scheduling problem, is applicable to complicated actual conditions such as tunnel. The upper computer can also wirelessly output and control the switching value of the electromechanical equipment connected with the specific terminal equipment, and wirelessly communicate and control the field 485 equipment through the 485 data transparent transmission function, so that when the terminal monitors that the field equipment fails and cannot control other electromechanical equipment below the field equipment, the terminal wirelessly controls the electromechanical equipment controlled by the monitored equipment, and the system safety after the field equipment fails is guaranteed.
In a possible embodiment, as shown in fig. 2, the monitoring terminal may further include a 220VAC to 12VDC power module, a 12VDC to 3.3VDC power module, a 12VDC to 5VDC power module, a 12VDC to 12VDC power module, a LoRa wireless module, an embedded MCU, an RS485 serial communication module, an external watchdog module, and an I/O extension module. The alternating current 220V commercial power is connected with a power input end of the LoRa wireless power failure monitoring terminal, and a direct current 12V power supply is output through a 220V-to-12V power supply module inside the alternating current 220V commercial power. The direct current 12V is converted into a direct current 3.3V voltage through a 12V to 3.3V power supply module, and the direct current 3.3V voltage supplies power to an embedded MCU, a LoRa wireless module, an external watchdog module, an I/O expansion module, a 4-path alternating current power supply detection circuit, an 8-path direct current power supply detection circuit and an 8-path switching value output control circuit; meanwhile, the direct current 5V voltage is output through the 12V to 5V isolation power supply module, and 5V power supply is provided for the RS485 serial port communication module. Meanwhile, the direct current 12V voltage is output through the 12V to 12V isolation power supply module to supply power to the switching value output control circuit. The LoRa wireless power failure monitoring terminal is externally provided with 8 direct current supply detection ports IN 1-IN 8, 4 alternating current supply detection ports AC 1-AC 4, 8 switching value output control ports DO 1-DO 8 and 1 485 communication port and is used for being connected with external equipment.
The embedded MCU is respectively connected with the LoRa wireless module, the RS485 serial port communication module, the external watchdog module and the I/O expansion module; the RS485 serial port communication module is connected with a device with a 485 communication interface on site through a 485 communication port; the switching value output control port is connected with a switching value control device on site to realize switching value control; the direct current power supply detection port and the alternating current power supply detection port are connected with a power supply of the field device, and direct current and alternating current power supply detection of the field device is achieved.
The MCU controls the LoRa wireless module to send or receive wireless commands to achieve wireless communication. MCU is after receiving loRa wireless communication order, and the corresponding module of control realizes specific function, if need return data to the host computer, then realizes wireless transmission through loRa wireless module, returns the host computer with data, carries out radio communication with the host computer.
The MCU communicates and controls the I/O expansion module through IIC data communication, the I/O expansion module is provided with 16 paths of I/O ports, and 8 paths of the I/O expansion module are used as control signals of the switching value output control circuit to realize switching value output control; in addition, 8 paths of detection signals output by the direct current power supply detection circuit or the alternating current power supply detection circuit are used for realizing direct current or alternating current power supply state detection.
Optionally, the switching value output control circuit includes a resistor R1, a photocoupler To1, a resistor R2, a resistor R3, a second triode, a resistor R4, and a capacitor C1, an input side of the photocoupler To1 is a first light emitting diode, and an output side of the photocoupler To1 is a first triode;
the first end of the resistor R1 is connected with a GPA1 pin, the second end of the resistor R1 is connected with the anode of the first light-emitting diode, the cathode of the first light emitting diode is grounded, the collector of the first triode is connected with a 12V power supply, the emitter of the first triode is connected with the first end of the resistor R2, the second end of the resistor R2 is connected with the base of the second triode, the second end of the resistor R2 is connected with the first end of the resistor R3, the second end of the resistor R3 is connected with the emitter of the second triode, the second end of the resistor R3 is grounded, the collector of the second triode is connected with the first end of the resistor R4, the second end of the resistor R4 is connected to the second end of the resistor R3, the first end of the resistor R4 is further connected to the first end of the capacitor C1, and the second end of the capacitor C1 is connected to the two ends of the resistor R4.
In the alternative embodiment, as shown in fig. 3, GPA1 to GPA8 are 8 control signals output from the I/O expansion block to the 8-way switching value output control circuit, respectively, and fig. 3 is the 1 st switching value output control circuit, and other 7 circuit configurations and parameters are the same. The MCU controls the level of the GPA1 by controlling the I/O expansion module, when the GPA1 is controlled To be high level, the high level drives a photodiode at the input side of a photoelectric coupler To1 To emit light through a resistor R1, the output side of the photoelectric coupler To1 is further conducted, and +12V is led into the base electrode of a triode Q1 through R2, so that the collector open-circuit output of the Q1 can be closed; when the GPA1 is controlled To be at a low level, the photodiode at the input side of the photoelectric coupler To1 does not emit light, the output end of the photoelectric coupler To1 is turned off, the base of the Q1 has no voltage, and the collector of the Q1 is in open circuit and is disconnected. The switching value output of the circuit is realized through the external connection ports out1+ and out 1-of the switching value output control circuit, and the switching value output control is carried out on the electrical equipment connected with the output of the circuit. Therefore, the terminal has the wireless switching value output control function by designing the 8-path switching value control output circuit with a simple structure, the product size is smaller by the circuit design, and the product cost is saved.
Optionally, the dc power supply detection circuit includes a resistor R5, a photo-coupler Td1, a resistor R6, a resistor R7, and a capacitor C2, an input side of the photo-coupler Td1 is a second light emitting diode, and an output side of the photo-coupler Td1 is a third triode;
the first end of resistance R5 is the positive input end, the second end of resistance R5 with the second emitting diode's positive pole is connected, the negative pole of second emitting diode is the negative input end, the collecting electrode of third triode with the first end of resistance R6 is connected, the emitter ground of third triode, the second end and the 3.3 volt power connection of resistance R6, the first end of resistance R6 still with the first end of electric capacity C2 and the first end of resistance R7 are connected, electric capacity C2 ground connection, the second end and the GPB1 pin of resistance R7 are connected.
In this optional embodiment, as shown in fig. 4, GPBs 1 to GPB8 receive detection signals output by the dc power supply detection circuit for the I/O expansion module, the dc power supply detection circuit detects the dc power supply state of the electromechanical device and converts the dc power supply state into a switching value detection signal, and inputs the switching value detection signal to the I/O expansion module, and the I/O expansion module performs data communication with the MCU to transmit data to the MCU and analyze the data by the MCU, so as to obtain dc power supply detection state information of the electromechanical device. Fig. 4 shows the 1 st dc power supply detection circuit, and the other 7 paths are the same as the circuit structure and parameters. The method comprises the steps that the positive electrode and the negative electrode of power supply voltage of external electromechanical equipment powered by direct current are respectively connected into IN1+ and IN 1-of a direct current power supply detection external port, when the direct current power supply of the electromechanical equipment is normal, the external 5-24V direct current power supply voltage drives a photodiode on the input side of a photoelectric coupler Td1 to emit light through R5, the output side of the Td1 is conducted, a direct current power supply detection circuit outputs low level to a GPB1, an I/O expansion module obtains the low level data and transmits the data to an MCU (microprogrammed control unit), the MCU analyzes and stores the data, and the direct current power supply of the external electromechanical equipment is judged to be normal; when the direct current power supply of the electromechanical device is abnormal, a photodiode on the input side of a photoelectric coupler Td1 does not emit light, the output side of the Td1 is turned off, the direct current power supply detection circuit outputs high level to the GPB1, the I/O expansion module obtains the high level data and transmits the data to the MCU, and the MCU analyzes and stores the data and judges that the direct current power supply of the external electromechanical device is abnormal.
Optionally, the alternating current power supply detection circuit includes a diode D3, a resistor R8, a resistor R9, a capacitor C3, a photocoupler Ta1, a resistor R10, a capacitor C4, and a resistor R11, an input side of the photocoupler Ta1 is a third light emitting diode, and an output side of the photocoupler Ta1 is a fourth triode;
the positive pole of diode D3 is alternating current positive pole input end, diode D3's negative pole with resistance R8's first end is connected, resistance R8's second end with electric capacity C3's first end with resistance R9's first end is connected, electric capacity C3's second end is alternating current negative pole input end, resistance R9's second end with third emitting diode's positive pole is connected, third emitting diode's negative pole with electric capacity C3's second end is connected, the collector of fourth triode with resistance R10's first end, resistance R11's first end and electric capacity C4's first end are connected, the emitter ground of fourth triode, resistance R10's second end is connected with 3.3 volt power supply, resistance R11's second end is connected with GPB5 pin, electric capacity C4's second end ground.
In this optional embodiment, the LoRa wireless power monitoring system realizes AC power supply detection through 4 AC power supply detection ports AC 1-AC 4. Fig. 5 shows a1 st path ac power supply detection circuit, and the other 3 paths have the same circuit structure and parameters. Circuits connected to the output sides of the photocouplers Ta1, Ta2, Ta3 and Ta4 are multiplexed with circuits at the output sides of the photocouplers Td5, Td6, Td7 and Td8 of the direct-current power supply detection circuit in the step five. The power supply of external electromechanical equipment powered by 220Vac or 380Vac alternating current can be accessed to AC1+ and AC1-, when the alternating current power supply of the electromechanical equipment is normal, the alternating current is subjected to half-wave rectification by D3, is filtered by C3, is converted into relatively stable direct current to drive a photodiode at the input side of a photoelectric coupler Ta1 to emit light, so that the output side of Ta1 is conducted, low level is output to GPB5, an I/O expansion module obtains the low level data and transmits the data to an MCU (microprogrammed control unit), the MCU analyzes and stores the data, and the AC power supply of the external electromechanical equipment is judged to be normal; when the alternating current power supply of the external electromechanical equipment is abnormal, the photodiode on the input side of the photoelectric coupler Ta1 does not emit light, the output side of the Ta1 is turned off, high level is output to the GPB5, the I/O expansion module acquires the high level data and transmits the data to the MCU, and the MCU analyzes and stores the data and judges that the alternating current power supply of the external electromechanical equipment is abnormal.
It is worth emphasizing that, in this embodiment, the dc power supply detection circuit includes 8 dc power supply detection circuits, and the ac power supply detection circuit includes 4 ac power supply detection circuits, wherein, 4 of the 4 ac power supply detection circuits and 8 of the dc power supply detection circuits have multiplexed a part of the circuits, and these designs have all greatly reduced the volume of the product, and saved the cost of the product, and the practicality is very strong.
Referring to fig. 6, an embodiment of the present invention further provides a wireless power failure monitoring method applied to the wireless power failure monitoring system, including:
the control host sends a command to the monitoring terminal through the gateway;
the monitoring terminal receives the command through the wireless communication module, transmits data to be transparently transmitted, which is contained in the data transparent transmission command, to the on-site electromechanical device to be tested through the 485 external port under the condition that the command is the data transparent transmission command, and transmits the returned data to the gateway if the on-site electromechanical device to be tested has data returned to the monitoring terminal through the 485 external port;
under the condition that the command is a direct current power supply detection command, controlling a direct current power supply detection circuit to detect the direct current power supply state of the on-site electromechanical equipment to be detected, which is powered by direct current, and returning the direct current power supply state to the gateway;
and under the condition that the command is an alternating current power supply detection command, controlling an alternating current power supply detection circuit to detect the alternating current power supply state of the electromechanical device to be detected on site powered by alternating current, and returning the alternating current power supply state to the gateway.
In this embodiment, after receiving a wireless command sent by a gateway, a monitoring terminal first determines whether the wireless command is a wireless command for controlling the terminal according to whether a wireless networking ID included in the wireless command is the same as a wireless communication ID of the terminal, if not, the monitoring terminal continues to wait for the arrival of the wireless command, if so, determines whether the command is a 485 data transparent transmission command, and if so, runs a data transparent transmission subroutine, and transmits data to be transparent transmitted included in the wireless command to a field device through a 485 external port. If the field device has data returned to the LoRa wireless power failure monitoring terminal through the 485 external port, the returned data is also sent to the power and network failure monitoring communication gateway in a wireless mode.
Further, if the command is not a 485 data transparent transmission command, whether the command is a direct current power supply monitoring command is judged, if so, a direct current power supply monitoring subprogram is operated, the direct current power supply detection circuit is controlled to detect the direct current power supply state of the electromechanical device powered by direct current, and the detected direct current power supply state is wirelessly returned to the power and network fault monitoring communication gateway.
Further, if the command is not the direct current power supply monitoring command, whether the command is the alternating current power supply monitoring command is judged, if the command is not the direct current power supply monitoring command, the alternating current power supply monitoring subprogram is operated, the alternating current power supply detection circuit is controlled to detect the alternating current power supply state of the electromechanical equipment powered by the alternating current power supply, and the detected alternating current power supply state is wirelessly returned to the power and network fault monitoring communication gateway.
Further, if the command is not the alternating current power supply monitoring command, whether the command is a switching value output control command is judged, and if the command is the switching value output control command, a switching value output control subprogram is operated to control a switching value output control circuit to control the switching value control of the electromechanical equipment.
It should be noted that, when the monitoring device sends the above information, the monitoring device sends the position information of the electromechanical device at the same time, and the upper computer can further judge the power failure state of the electromechanical device, and when a failure occurs, the upper computer performs failure location according to the position information.
Optionally, when the command is a terminal fault diagnosis command, the monitoring terminal performs fault diagnosis on itself and returns terminal fault state information to the gateway.
Further, if the command is not the switching value output control command, whether the command is the terminal fault diagnosis command is judged, if the command is the terminal fault diagnosis command, a terminal fault diagnosis subprogram is operated, fault diagnosis is carried out on the terminal, and terminal fault state information is wirelessly returned to the power and network fault monitoring communication gateway. Therefore, the terminal can detect the power failure state of the field electromechanical equipment, can also detect the failure of the terminal in a wireless manner, and is convenient for remote operation and maintenance.
Optionally, in a case that the command is a parameter configuration command, the monitoring terminal configures its own wireless networking ID and communication network parameters, and performs system restart on the terminal after configuration.
Further, if the terminal fault diagnosis command is not the terminal fault diagnosis command, whether the command is a command for carrying out parameter configuration on the terminal is judged, if the command is the terminal fault diagnosis command, a terminal parameter configuration subprogram is operated, parameters such as a wireless networking ID (identity) and a communication network of the terminal are configured, the system is restarted on the terminal after the configuration, and if the command is not the terminal fault diagnosis command, the monitoring terminal continues to wait for a new wireless command.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (8)

1. A wireless power failure monitoring system, comprising: the system comprises a control host, a gateway, a wireless communication module and a monitoring terminal, wherein the monitoring terminal is arranged in a tunnel to be tested and is connected with electromechanical equipment to be tested, the wireless communication module is arranged on the monitoring terminal, the gateway is arranged at the tunnel mouth of the tunnel to be tested and is in wireless communication connection with the wireless communication module, and the control host is in serial passing connection with the gateway through a bus;
the monitoring terminal comprises a direct current power supply detection circuit, an alternating current power supply detection circuit and a switching value output control circuit, and the direct current power supply detection circuit, the alternating current power supply detection circuit and the switching value output control circuit are all connected with the electromechanical device to be detected;
the direct current power supply detection circuit is used for acquiring the direct current power supply state of the electromechanical device to be detected and sending the detected direct current power supply state to the gateway through the communication module;
the alternating current power supply detection circuit is used for acquiring the alternating current power supply state of the electromechanical device to be detected and sending the detected alternating current power supply state to the gateway through the communication module;
the switching value output control circuit is used for controlling the switching value of the electromechanical equipment;
the gateway is used for transmitting a data transparent transmission command, a direct current power supply detection command, an alternating current power supply detection command and a switching value output control command generated by the control host to the monitoring terminal.
2. The wireless power failure monitoring system of claim 1, wherein the switching value output control circuit comprises a resistor R1, a photocoupler To1, a resistor R2, a resistor R3, a second triode, a resistor R4 and a capacitor C1, wherein the input side of the photocoupler To1 is a first light emitting diode, and the output side of the photocoupler To1 is a first triode;
the first end of the resistor R1 is connected with a GPA1 pin, the second end of the resistor R1 is connected with the anode of the first light-emitting diode, the cathode of the first light emitting diode is grounded, the collector of the first triode is connected with a 12V power supply, the emitter of the first triode is connected with the first end of the resistor R2, the second end of the resistor R2 is connected with the base of the second triode, the second end of the resistor R2 is connected with the first end of the resistor R3, the second end of the resistor R3 is connected with the emitter of the second triode, the second end of the resistor R3 is grounded, the collector of the second triode is connected with the first end of the resistor R4, the second end of the resistor R4 is connected to the second end of the resistor R3, the first end of the resistor R4 is further connected to the first end of the capacitor C1, and the second end of the capacitor C1 is connected to the two ends of the resistor R4.
3. The wireless power failure monitoring system of claim 1, wherein the dc power supply detection circuit comprises a resistor R5, a photo coupler Td1, a resistor R6, a resistor R7 and a capacitor C2, an input side of the photo coupler Td1 is a second light emitting diode, and an output side of the photo coupler Td1 is a third triode;
the first end of resistance R5 is the positive input end, the second end of resistance R5 with the second emitting diode's positive pole is connected, the negative pole of second emitting diode is the negative input end, the collecting electrode of third triode with the first end of resistance R6 is connected, the emitter ground of third triode, the second end and the 3.3 volt power connection of resistance R6, the first end of resistance R6 still with the first end of electric capacity C2 and the first end of resistance R7 are connected, electric capacity C2 ground connection, the second end and the GPB1 pin of resistance R7 are connected.
4. The wireless power failure monitoring system of claim 1, wherein the ac power supply detection circuit comprises a diode D3, a resistor R8, a resistor R9, a capacitor C3, a photocoupler Ta1, a resistor R10, a capacitor C4, and a resistor R11, wherein an input side of the photocoupler Ta1 is a third light emitting diode, and an output side of the photocoupler Ta1 is a fourth triode;
the positive pole of diode D3 is alternating current positive pole input end, diode D3's negative pole with resistance R8's first end is connected, resistance R8's second end with electric capacity C3's first end with resistance R9's first end is connected, electric capacity C3's second end is alternating current negative pole input end, resistance R9's second end with third emitting diode's positive pole is connected, third emitting diode's negative pole with electric capacity C3's second end is connected, the collector of fourth triode with resistance R10's first end, resistance R11's first end and electric capacity C4's first end are connected, the emitter ground of fourth triode, resistance R10's second end is connected with 3.3 volt power supply, resistance R11's second end is connected with GPB5 pin, electric capacity C4's second end ground.
5. A wireless power failure monitoring method applied to the wireless power failure monitoring system according to any one of claims 1 to 4, comprising:
the control host sends a command to the monitoring terminal through the gateway;
the monitoring terminal receives the command through the wireless communication module, transmits data to be transparently transmitted, which is contained in the data transparent transmission command, to the on-site electromechanical device to be tested through the 485 external port under the condition that the command is the data transparent transmission command, and wirelessly transmits the returned data to the gateway if the on-site electromechanical device to be tested has data returned to the monitoring terminal through the 485 external port;
under the condition that the command is a direct current power supply detection command, controlling a direct current power supply detection circuit to detect the direct current power supply state of the on-site electromechanical equipment to be detected, which is powered by direct current, and returning the direct current power supply state to the gateway;
and under the condition that the command is an alternating current power supply detection command, controlling an alternating current power supply detection circuit to detect the alternating current power supply state of the electromechanical device to be detected on site powered by alternating current, and returning the alternating current power supply state to the gateway.
6. The wireless power failure monitoring method according to claim 5, wherein, when the command is a terminal failure diagnosis command, the monitoring terminal performs failure diagnosis on itself and returns terminal failure status information to the gateway.
7. The method according to claim 5, wherein when the command is a parameter configuration command, the monitoring terminal configures its own wireless networking ID and communication network parameters, and performs system restart on the terminal after configuration.
8. The wireless power failure monitoring method according to claim 5, wherein the command carries a wireless networking ID, and after the monitoring terminal receives the command through a wireless communication module, the method further comprises:
and the monitoring terminal judges whether the wireless networking ID contained in the command is the same as the wireless networking ID of the monitoring terminal, and if the wireless networking ID in the command is the same as the wireless networking ID of the monitoring terminal, the monitoring terminal executes the operation corresponding to the command.
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