CN111697702A - Stadium seat USB port intelligent control system that charges - Google Patents

Stadium seat USB port intelligent control system that charges Download PDF

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Publication number
CN111697702A
CN111697702A CN202010596918.2A CN202010596918A CN111697702A CN 111697702 A CN111697702 A CN 111697702A CN 202010596918 A CN202010596918 A CN 202010596918A CN 111697702 A CN111697702 A CN 111697702A
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China
Prior art keywords
communication
power supply
resistor
pin
bus
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CN202010596918.2A
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CN111697702B (en
Inventor
姚炜
戚琛琛
唐晓俊
童巍
吴颉
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Shanghai Electrical Apparatus Research Institute Group Co Ltd
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Shanghai Electrical Apparatus Research Institute Group Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00019—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using optical means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/30—Charge provided using DC bus or data bus of a computer

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses an intelligent control system for a USB charging port of a stadium seat. The power supply of the system and the comprehensive operation condition of a communication network are monitored through a real-time online monitoring technology, and the multifunctional direct-current power supply terminal (a seat USB charging port) is controlled to be switched on and off and switched into a mode in an automatic, program-controlled and manual mode, so that the humanized convenience service function and the overall weak current intelligent level of a stadium are greatly improved. The innovation adopts the Powerbus low pressure power supply bus technique to be applied to stadium seat USB charging system, satisfy the demand of equipment power supply and communication through modulating control signal on supply cable, replaced the control cable and the supply cable of traditional separation and increased substantially communication stability, high communication interference killing feature is provided, can adapt to various wire rods of field usage and arbitrary topological mode and lay, and realize remote communication's function, greatly make things convenient for the construction wiring, and can prevent the misconnection and take place, simplify the construction and maintain.

Description

Stadium seat USB port intelligent control system that charges
Technical Field
The invention relates to an intelligent control system for a USB charging port of a stadium seat, in particular to an intelligent control system for a direct-current power supply system, wherein a power supply bus technology is applied to the USB charging port of the stadium seat.
Background
The mobile phone is used as a member of multimedia, particularly a smart phone is in the world, so that the cognition of the people in the past, namely, chatting, video, games, microblogs, shopping and navigation … … are greatly overturned, convenience and rapidness are realized, and therefore, modern people can not leave the mobile phone more and more, and the mobile phone is an indispensable part in modern life. With the increasing functionality of smart phones, people seem to be more and more dissuable in daily life. When the mobile phone is indicated to be low in power, namely the power is lower than 20%, some people even have nervous and anxious moods. In the construction of the prior stadium, the requirement of modern people for charging the mobile phone USB anytime and anywhere is never considered, and along with the new construction and the reconstruction and the expansion of a new generation stadium, the requirement of a USB charging terminal DC power supply system of a stadium seat becomes greater and greater, the USB charging terminal DC power supply system becomes an indispensable part of electromechanical infrastructure of the new generation stadium construction, and is integrated into the unified control and management of the whole intelligent weak current system. However, the current intelligent control of the dc power supply system of the USB charging port of the stadium seat lacks a unified construction and safety standard, and the traditional building intelligent control management method has the problems of large investment, complex system, poor safety, reliability and maintainability, etc., and especially brings great challenges to the design, construction, debugging and maintenance of the dc power supply system of the USB charging port of the stadium seat due to the situations of a large number of USB charging ports of the stadium seat, wide distribution, complex power supply and communication topology, low voltage and large current under the requirement of safe power supply, etc. At present, the intelligent control system of the DC power supply system of the USB charging port of the stadium seat is only an idea in a plurality of stadiums, and only stays in a recognition stage, and the overall planning is not carried out on the management of the DC power supply system of the USB charging port of the stadium seat by using a power supply bus technology, a system engineering and an informatization method, so that the efficient, safe and reliable operation and application of the system in the actual stadium are influenced. At present, the industrial communication control mode mainly takes traditional RS-485 bus communication as a main mode. Due to the complexity of the stadium field environment, communication faults caused by misconnection and reverse connection of the communication line and the power line bring troubles to field debugging and maintenance, economic loss and time waste are caused, the reliability and maintainability of the system are greatly reduced, and the efficiency is reduced.
Disclosure of Invention
The purpose of the invention is: the DC power supply system intelligent control system based on the power supply bus technology is applied to the USB charging port of the stadium seat, so that the best effects of low cost and high efficiency of the DC power supply system of the USB charging port of the stadium seat are achieved.
In order to achieve the above object, the technical solution of the present invention is to provide an intelligent control system for a USB charging port of a stadium seat, which is characterized in that: the system comprises a direct-current power supply system management platform, a direct-current power supply area monitoring host, a communication power distribution controller and an intelligent control terminal module according to a communication control level from top to bottom, wherein the direct-current power supply system management platform exchanges information with an external system by adopting an industrial computer, a serial communication interface and a network interface and is used for managing and controlling the whole system.
The direct current power supply area monitoring host establishes communication connection with the direct current power supply system management platform through the optical fiber transceiver, is used for monitoring the working state of each lower layer device in real time, and reports faults and events to the direct current system management platform;
the communication power distribution controller is connected with the direct current power source region monitoring host through the communication bus and the power supply line, is used for completing the butt joint of an upper protocol and a lower communication route and the link modulation of communication data and a power supply source, and combines the power supply line and the communication bus into a whole through the Powerbus bus master controller, so that the communication power distribution controller outputs partial communication signals and supplies power to share one bus.
And the intelligent control terminal module is connected with the output end of the communication power distribution controller through a Powerbus power supply bus, provides a power output port in an intelligent control mode according to a master control instruction of a direct-current power supply system management platform, and realizes USB charging management.
Preferably, the dc power system management platform includes a central controller, an industrial network switch and a fiber transceiver; and the central controller establishes communication connection with the direct current power supply area monitoring host through an industrial network switch and an optical fiber transceiver.
Preferably, the input end of the dc power supply area monitoring host is connected to an industrial network switch of the dc power supply system management platform through an optical fiber transceiver, and the output end of the dc power supply area monitoring host is connected to the communication power distribution controller through a communication bus.
Preferably, the communication power distribution controller comprises a communication routing unit, a communication signal modulation unit, an output control unit, an AC/DC switching power supply and a miniature circuit breaker, wherein an input end of the communication routing unit is connected with an output end of the direct current power supply region monitoring host through a communication bus, an output end of the communication routing unit is connected with the output control unit through the communication signal modulation unit, and a 220V input power supply is connected with the output control unit through the miniature circuit breaker and the AC/DC switching power supply to output a DC24V safety voltage.
Preferably, the intelligent control terminal module comprises a Powerbus slave station receiver, a bus communication IO intelligent control unit, a USB charging module, a human body detection unit and a sensing information input unit, the Powerbus slave station receiver is connected with the output end of the output control unit of the communication power distribution controller through a Powerbus power supply bus, the power supply output interface of the Powerbus slave station receiver is connected with the power supply input interface of the bus communication IO intelligent control unit, the output DC24V voltage is controlled through the power supply intelligent output interface of the bus communication IO intelligent control unit, and the DC24V voltage is used as the input of the USB charging module to realize USB charging through variable voltage output; and a communication signal output interface of the Powerbus slave station receiver is connected with a communication input interface of the bus communication IO intelligent control unit, and an information acquisition output interface of the bus communication IO intelligent control unit is connected with the human body detection unit and the sensing information input unit.
Preferably, the intelligent control terminal module is provided with 2 specifications of a double-position intelligent control terminal and a unit intelligent control terminal.
Preferably, the Powerbus master station controller circuit comprises a power supply, an EV620 circuit board, a fuse F1, a power tube Q1, a triode Q2, a triode Q3, a capacitor C11, a resistor R11, a resistor R12, a resistor R13 and a unidirectional TVS tube, the power supply is connected with one end of a capacitor C11, the source of the power tube Q1 and the V + pin of the EV620 circuit board through a fuse F1 respectively, the other end of the capacitor C11 is grounded, the gate of the power tube Q1 is connected with the BH pin of the EV620 circuit board through a resistor R12, the drain of the power tube Q1 is connected with the L + pin of the EV620 circuit board, the emitter of the triode Q3, one end of the resistor R11, the cathode of the unidirectional TVS tube and one of the power bus lines, the collector of the triode Q3 is connected with the BL pin of the EV620 circuit board and the base of the triode Q2 respectively through a resistor R82 13, the base of the triode Q5953 is connected with the emitter of the other end of the Powerbus line of the Powerbus R56 and the collector of the unidirectional TVS tube 2, the GND pin of the EV620 board is grounded.
Preferably, the core chip of the EV620 circuit board is a PB620 chip, the HP pin of the PB620 chip is connected to the BAUD pin of the EV620 circuit board,
Figure BDA0002557503340000031
the pin is connected with a BRK pin of the EV620 circuit board, a COHN pin is connected with a base electrode of a triode T1, an emitting electrode of a triode T1 is grounded through a resistor R2, a collector electrode of the triode T1 is respectively connected with one end of a resistor R1, a base electrode of a triode T2 and a base electrode of a triode T3, and a collector electrode of the triode T2 is respectively connected with the other end of the resistor R1 and a V + pin of the EV620 circuit board; the collector of the triode T3 is grounded, the emitter of the triode T2 is respectively connected with the emitter of the triode T3, one end of the resistor R3 and one end of the capacitor C1, and the other end of the resistor R3 is respectively connected with the other end of the capacitor C1 and the BH pin of the EV620 circuit board; the 3V3 pin of the PB620 chip is respectively connected with a capacitor C4 and a capacitorOne end of C15, the other end of capacitor C4 is grounded, the other end of capacitor C15 is respectively connected with reference ground and OUT pin of LDO, GND pin of LDO is grounded, IN pin of LDO is respectively connected with VCC end of EV620 circuit board and IN pin of regulator LM317, ADJ pin of regulator LM317 is respectively connected with one end of resistor R6, collector of triode T4, one end of resistor R5 and input end of regulator D2, base of triode T4 is connected with CONM pin of PB620 chip through resistor R4, emitter of triode T4 is grounded, ANA pin of PB620 chip is respectively connected with one end of capacitor C2 and one end of resistor R15, the other end of capacitor C2 is respectively connected with reference ground and one end of resistor R12, the other end of resistor R12 is respectively connected with the other end of resistor R15 and collector of triode T6, emitter of triode T6 is respectively connected with the other end of resistor R5, OUT pin of regulator 317, one end of resistor R6342 and the other end of resistor R599 is connected with input end of LM 599 through resistor R11, the base electrode of a triode T6 is respectively connected with one end of a resistor R13, the common end of a voltage stabilizer D1 and the common end of a voltage stabilizer D2, the other end of a resistor R13 is respectively connected with an ANV pin of a PB620 chip, one end of a resistor R14 and one end of a capacitor C3, the other end of a capacitor C3 is respectively connected with the other end of a resistor R14 and a reference ground, the output end of a voltage stabilizer D1 is respectively connected with an L + pin of an EV620 circuit board and one end of a resistor R9, the output end of a voltage stabilizer D2 is respectively connected with a BL pin of the EV620 circuit board and one end of a resistor R8, the other end of the resistor R8 is respectively connected with the other end of a resistor R9 and the collector electrode of a triode T5, the base electrode of a triode T5 is connected with the.
Preferably, the power tube Q1 includes a power tube Q1A and a power tube Q1B connected in parallel, the source of the power tube Q1A is connected to the source of the power tube Q1B and the V + pin of the EV620 circuit board, the drain of the power tube Q1A is connected to the drain of the power tube Q1B and the L + pin of the EV620 circuit board, the gate of the power tube Q1A is connected to one end of a resistor R2B and the BH pin of the EV620 circuit board through a resistor R2A, and the other end of the resistor R2B is connected to the gate of the power tube Q1B.
Preferably, the Powerbus slave station receiver circuit comprises a PB331 chip, a PI pin of the PB331 chip is connected with one end of a resistor R31 and one end of a resistor R32, the other end of the resistor R32 is grounded, the other end of the resistor R31 is respectively connected with a collector of a triode T11, an anode of a diode D11, an anode of a rectifier bridge MB6S, a cathode of the diode D11 is respectively connected with one end of a capacitor C31 and a DCS port to serve as a power supply output interface of the Powerbus slave station receiver, the other end of the capacitor C31 is grounded, a base of the triode T11 is connected with a PD pin of the PB331 chip through a resistor R34, an emitter of the triode T11 is grounded through a resistor R33, a cathode of the rectifier bridge MB6S is grounded, an alternating current end of the rectifier MB6S is connected with a Powerbus through a fuse F2, and a bidirectional TVS tube is connected between the rectifier bridge MB6S and the.
Basic functions of the system:
(1) real-time on-line monitoring: monitoring the comprehensive operation condition of the central controller, the open circuit, the short circuit and the connection state of a loop of a system power supply and communication network; and monitoring the working and fault conditions of the communication power distribution controller and the intelligent control terminal equipment.
(2) Intelligent control: the basic working mode of the intelligent direct-current power supply terminal equipment can be set remotely through the central controller, the multifunctional direct-current power supply terminal switch can be controlled automatically or manually, and various switching and conversion can be realized according to a control software program.
(3) USB charging management: output voltage: 4.5V-5.5V, output current: 2A, the USB port adopts a 'quick charging' mechanism for charging.
(4) And (3) outputting an intelligent power supply: the intelligent power output end of the system control terminal module can provide power for realizing various switching and conversion modes according to control software programs, and can be connected to other direct-current 5V electric equipment.
The system monitoring function is as follows:
the system has a self-checking function, the central controller can automatically and comprehensively monitor the working states and fault conditions of system equipment and software such as a signal machine, a power supply, a communication link, a detector and the like, the state of the system and the equipment can be displayed in a control center, and an alarm or a prompt can be given when the system and the equipment cannot work normally. All fault information and other operational errors or event occurrences should be recorded in the system log.
The system remote monitoring and maintenance function:
the system is connected with a system maintenance center (user authorization) through a remote networking mode such as GPRS, WIFI, 4G or 5G wireless network and the like through an Internet remote management platform based on a BS framework, and the system is remotely maintained and controlled by the system maintenance center. The operation of the monitoring system is monitored as the local system console; setting system control parameters; and modifying and upgrading system software.
Compared with the prior art, the invention has the beneficial effects that:
the intelligent control system of the DC power supply system of the USB charging port of the stadium seat monitors the comprehensive operation condition of the central controller of the DC power supply system of the USB charging terminal of the stadium seat through a real-time online monitoring technology; the open circuit, short circuit and connection state of the loop of the system power supply and communication network; and the working and fault conditions of the communication power distribution controller and the intelligent control terminal equipment are controlled. The basic working mode of the intelligent direct-current power supply terminal equipment can be set remotely through the central controller, the opening and closing of the multifunctional direct-current power supply terminal (seat USB charging port) can be controlled automatically or manually, and various switching and conversion can be achieved according to control software programs. The seat USB charging port adopts a 'quick charging' mechanism for output charging. The system intelligent control terminal module intelligently controls the power output end through the human body detection unit and the sensing information input unit, can provide power for realizing various switching and conversion modes according to a control software program, and can be connected to other direct-current 5V electric equipment.
The system adopts a power supply bus technology based on Powerbus low-voltage direct current carrier waves, meets the requirements of equipment power supply and communication by modulating control signals on a power supply cable, replaces the traditional separated control cable and power supply cable, greatly improves the communication stability, provides high communication anti-interference capability, can adapt to various wires used on site and can be laid in any topological mode, realizes the function of remote communication, greatly facilitates construction wiring, can prevent misconnection and simplifies construction and maintenance. Compared with an RS-485 four-wire system (two power supply lines and two communication lines), the power supply line and the signal line are combined into a whole, the technology that signals and power supply share one bus is realized, and due to the performance of the non-polar wiring arbitrary topology, system faults caused by arbitrary intersection and wiring errors of the bus occurring in the construction of thousands of seat USB charging ports in a stadium are avoided, so that the design, construction, debugging and maintenance of a seat USB charging port direct-current power supply system in the stadium are simplified and easy.
Drawings
FIG. 1 is a block diagram of a stadium seat USB charging port intelligent control system;
fig. 2 is a dc power system management platform) technical structure diagram;
FIG. 3 is a technical block diagram of a DC power supply area monitoring host;
FIG. 4 is a diagram of a communication distribution controller;
FIG. 5 is a schematic diagram of a communication distribution controller technology;
FIG. 6 is a technical structural diagram of an intelligent control terminal module;
FIG. 7 is a schematic diagram of the technical principle of the intelligent control terminal module;
FIG. 8 is a schematic diagram of the Powerbus bus master station controller connections;
FIG. 9 is a diagram of a Powerbus bus master station controller base application circuit;
FIG. 10 is a schematic diagram of a Powerbus master station controller core circuit board EV620 (daughter board);
FIG. 11 is a schematic diagram of a UART communication interface 8 bit-serial data transmission;
FIG. 12 is a diagram illustrating a 9-bit serial port data transmission of the UART communication interface;
FIG. 13 is a schematic diagram of a parallel MOSFET and PB620 circuit connection;
FIG. 14 is a schematic diagram of unidirectional TVS characteristics and clamping voltage effects;
FIG. 15 is a schematic diagram of the Powerbus bus slave receiver connections;
FIG. 16 is a circuit diagram of a basic application of the Powerbus bus slave receiver;
FIG. 17 is a schematic diagram of the Powerbus bus connection from the station receiver to the DC load;
FIG. 18 is a power supply schematic of the PB331 core circuitry;
FIG. 19 is a plan view of a stadium seat USB charging port intelligent control system of the present invention;
fig. 20 is a wiring diagram of the intelligent control terminal module.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the structure of the communication control layer of the intelligent control system for the USB charging port of the stadium seat of the present invention is 4 levels: the central management/control level, the area control level, the distribution route control level and the intelligent control terminal control the corresponding direct current power supply system management platform, the direct current power supply area monitoring host, the communication distribution controller and the intelligent control terminal module. The system ladder power supply structure is divided into 2 levels: an AC-DC conversion buck stage and a DC-DC safe voltage stage.
1. DC power system management platform:
a technical structure diagram of a direct current power system management platform (central controller) is shown in fig. 2, the direct current power system management platform comprises a central controller (DCMS), an industrial network switch, an optical fiber transceiver and the like, provides an OPC industrial standard data interface which is interconnected and intercommunicated with a weak current system intelligent integration platform or a BA system, realizes data docking with a superior data center by accessing a firewall to the internet, has an intuitive man-machine operation interface, and can facilitate control and editing of system equipment.
The central controller adopts an industrial control computer, and has good stability and high reliability. Industrial control computers require the use of industrial-grade computers, serial communication interfaces and network interfaces to exchange information with external systems.
The software system of the central controller consists of editing software, management software and a protocol analysis module. The editing software consists of a graph editing module and a plan editing module; the management software consists of a management module and a communication module.
(1) Editing software: and finishing the editing of the information required by the normal operation of the system. The graph editing module realizes the functions of editing the layer, adding and deleting equipment on the layer, setting information of the equipment and the like; the plan editing module adopts a graphic mode and a code mode to realize the functions of editing emergency plan information and editing plan information;
(2) management software: and finishing the operation and the view of the related equipment and the related information. The communication module realizes the functions of collecting equipment information, downloading equipment control commands and the like. The management module realizes the functions of setting basic information of the system, checking related information in the system, sending out commands for controlling the equipment and the like.
(3) A protocol analysis module: and completing the analysis function of the communication protocol between the central controller (DCMS) and the direct current power source region monitoring host (QC).
Main technical parameters of the central controller (DCMS):
(1) the DC power supply intelligent management system is provided with a building plan display and embedded with audience information identification;
(2) a manager monitors and manages the system through a direct current power system management platform in the central monitoring room;
(3) adopting a full Chinese graphic operation interface;
(4) the system has the functions of alarm management, schedule, history record, password protection, Chinese menu type and graphical multifunctional programming software;
(5) the control area and the operation management authority can be flexibly and conveniently set according to the requirement;
(6) the states of all direct-current power supply system equipment can be detected, and the fault-free operation of the system is guaranteed;
(7) the stability of the monitoring software is not influenced when the temperature of the normal environment changes or the monitoring software runs for a long time;
(8) the central monitoring software can monitor the operation and state of the intelligent terminal equipment unit and the realization of functions;
(9) the preset test is automatically completed, and the test result can be intuitively reflected;
(10) the data storage time related to the system operation is more than 5 years;
(11) when a power supply circuit fault and an intelligent terminal equipment unit function fault occur, fault data can be printed and output in real time, and the data can be selected through function operation;
(12) the system can be programmed and configured, and the system function can be configured;
(13) the fault information of any component equipment in the system can be acquired;
(14) the intelligent terminal equipment unit with faults can be positioned and visually displayed through color change.
2. The monitoring host of the direct current power supply area:
the technical structure diagram of the direct current power supply area monitoring host (QC) is shown in fig. 3, which can monitor the working state of each lower layer device in real time and has the function of fault and event reporting. The direct current power supply area monitoring host (QC) is upwards accessed to an industrial network switch of a direct current power supply system management platform (DCMS) through an optical fiber transceiver and downwards connected with a communication power distribution controller (TPC) in a communication bus mode.
Technical constitution and specification parameters of a direct current power supply area monitoring host (QC):
(1) the communication line adopts CAN, ModBus and LonBus buses with high stability and long transmission distance. The communication power distribution controller is connected with the intelligent direct-current power supply terminal module in a two-bus communication mode.
(2) The direct current power supply area monitoring host (QC) adopts a high-reliability industrial control computer and an embedded operating system. Not less than 7 inches for a color display; chinese characters are displayed.
(3) Input power AC220V, 50 HZ.
(4) The protection grade is not lower than IP 30.
(5) The use environment is as follows: the temperature is between-10 ℃ and 55 ℃, and the relative humidity is less than or equal to 95 percent RH.
(6) External communication: the direct current power supply area monitoring host (QC) is provided with a 2-way quasi-serial interface (RS-485), a CAN bus and an optical fiber communication interface.
The main functions of the direct current power supply area monitoring host (QC) are as follows:
(1) the system can monitor the working state of each device in the system in real time, and has the functions of uninterrupted inspection and active fault alarm.
(2) And monitoring the fault states and fault occurrence time of all equipment in the system, inquiring, recording and printing information in real time, and giving out sound and light alarm.
3. Communication distribution controller:
the communication power distribution controller (TPC) mainly completes the butt joint of an upper protocol and a lower communication route and the link modulation of communication data and a power supply. The technical structure of the communication power distribution controller is shown in a circuit diagram 4.
The communication distribution controller (TPC) is composed of a communication routing unit, a communication signal modulation unit, an output control unit, an AC/DC switching power supply, a miniature circuit breaker and the like. Fig. 5 shows a technical principle schematic diagram of a communication power distribution controller (TPC), an input part of the communication power distribution controller (TPC) is a communication bus (RVS-2 × 1.5) and an AC220 input power cable (WDZ-BYJ-3 × 2.5), and a power supply bus technology of Powerbus low-voltage direct current carriers adopts a Powerbus master controller to combine a power supply line and a communication signal line into one, so that a technology that a bus is shared by communication signals and power supply of an output part is realized. The output loop number of the communication power distribution controller (TPC) is 4 (WLE 1-WLE 4), and WDZ-BYJ-2 multiplied by 4 cables are adopted. The communication routing unit of the input part of the communication power distribution controller (TPC) and the direct current power source region monitoring host (QC) are configured with communication interfaces with corresponding specifications, and RS-485 communication interfaces can be selected. The input voltage of a communication power distribution controller (TPC) is AC220V, and the loop voltage of an output power supply bus (WLE 1-WLE 4) is DC24V, so that the power supply bus laid around the stadium seat is ensured to be safe.
Main technical parameters of the communication power distribution controller (TPC):
(1) the device comprises an input unit, a communication module, a power module, an output and communication control module and the like.
(2) Each regional distribution box is provided with an independent address code.
(3) The input voltage was AC220V and the output voltage was DC 24V.
(4) The output loop number of the communication distribution controller is limited to 4 at most.
(5) Each loop of the power supply and the communication output has a short circuit and open circuit protection function.
(6) Each loop fault of the power supply and the communication output cannot influence the communication and power supply of other loops.
(7) The intelligent control terminal module can receive the instruction of the system controller and control the work of the intelligent control terminal module.
(8) The communication power distribution controller can be arranged in a power distribution interlayer of a stadium area.
(9) The installation mode is as follows: and (4) wall-mounted installation.
(10) The use environment is as follows: the temperature is-10 ℃ to 50 ℃, and the relative humidity is less than or equal to 95 percent RH.
(11) Protection grade: not less than IP 33; has the measures of moisture prevention, water prevention and the like.
4. Intelligent control terminal module:
the intelligent control terminal module (ZM) is divided into 2 specifications of double positions (ZM/2D) and units (ZM/1D), and is configured according to the actual requirements of the stadium seat. The intelligent control terminal module (ZM) is composed of a Powerbus slave station receiver, a bus communication IO intelligent control unit, a USB charging module, a human body detection unit, an intelligent power output unit, a sensing information input unit and the like. The intelligent control terminal module (ZM) realizes the functions of information acquisition and output management. The technical structure diagram of the intelligent control terminal module is shown in fig. 6, and the technical principle schematic diagram of the intelligent control terminal module (ZM) is shown in fig. 7. The power supply output interface of the Powerbus slave station receiver is connected with the power supply input interface of the bus communication IO intelligent control unit, the DC24V voltage is controlled and output through the power supply intelligent output interface of the bus communication IO intelligent control unit, and the DC24V voltage is used as the input of the USB charging module to realize USB charging through voltage transformation output; the communication signal output interface of the Powerbus slave station receiver is connected with the communication input interface of the bus communication IO intelligent control unit, and the information acquisition output interface of the bus communication IO intelligent control unit is connected with the human body detection unit and the sensing information input unit.
Main technical parameters of the intelligent control terminal module (ZM):
(1) the working environment is as follows: outdoor open-air environment.
(2) Ambient temperature: -20 ℃ to 80 ℃.
(3) Protection grade: IP 66.
(4) Inputting a power supply: DC24V is powered using the Powerbus power bus (signal and power share a common bus).
(5) The communication mode is as follows: the Powerbus power supply bus (signal and power share one bus) is used for communication.
(6) USB charging port of USB charging module:
USB port charging employs a "fast charge" mechanism.
Input voltage: DC24V
Output voltage: 4.5V-5.5V, output current: 2A.
(7) The USB charging module supports various USB charging protocols, and the charging protocols are automatically switched.
The Divider1/Divider2/Divider3 charging protocol.
D +/D-1.2V mode.
BC1.2 DCP and CTIS YD/T1591-.
Basic functions of the intelligent control terminal module (ZM):
(1) each intelligent control terminal module has a unique communication address.
(2) The intelligent control terminal module can execute the functions of opening and closing the controller instruction and the like.
(3) USB charging management may be performed and a fast charging output port may be provided.
(4) And the power output port in an intelligent control mode can be provided according to the master control instruction.
5. Powerbus power supply bus:
the Powerbus low-voltage direct-current carrier power supply bus is a technology which combines a power supply line and a signal line into a whole relative to an RS-485 four-wire system (two power supply lines and two communication lines), so that the signal and power supply share one bus, and due to the nonpolar wiring performance of any topology, wiring errors in construction are avoided, and the construction design is simplified and easy.
The Powerbus power supply bus improves the traditional application of the traditional RS-485 bus aiming at the construction design defects of the RS-485 bus, has the advantages of non-polar wiring, random topology, no need of isolation, long communication distance and the like, and the Powerbus communication protocol conforms to the Modbus communication protocol, thereby simplifying the construction design. The power bus performance comparison is shown in table 1. The Powerbus two-wire system power supply bus technology adopts a TDMA communication technology to realize simultaneous power supply and communication, has the characteristics of power supply, communication, non-polar connection and the like, and comprises a master station controller and a slave station receiver. The bus protocol solution based on network transmission is mature in two types, namely EtherCAT and PowerLink, and Powerbus is different from the EtherCAT and PowerLink, not only has the functions of the two protocols, but also is superior to the two schemes in certain indexes.
Figure BDA0002557503340000111
Figure BDA0002557503340000121
TABLE 1
The Powerbus power supply bus has the technical characteristics that:
high-speed communication: the bus can supply power, and the farthest communication distance can reach 3000 meters.
High power: the bus may provide 20A current and a single slave may provide 1A current.
Non-polar wiring: the wiring is nonpolar, and the installation and debugging time is saved.
Any topology: support star, tree form, bus type, walk the line more at will.
The slave station can be hooked 256: more than 256 nodes can be stably communicated without being influenced by equipment.
Wiring and mixed walking: the wiring can be mixed with the AC220V without the need for separate poling.
Flexible wiring: any cable, twisted pair, BV wire.
The cost is saved: and the cost is greatly reduced without electrical isolation.
Anti-interference: outstanding interference killing feature, EMC compatibility need not the magnetic ring.
Simple and easy to use: the serial port UART transmits transparently, and the MODBUS protocol is compatible, simple and flexible in application.
Low configuration: no requirement on load and no limitation on current fluctuation.
Easy expansibility: the relay can flexibly expand the distance, the power and the number of the slave stations.
Powerbus power supply bus technical index:
the bus can supply power, and communication and power supply do not need electrical isolation.
Supporting 9600bps and 2400bps half-duplex communication.
The bus current 20A (2400bps) may be supported.
The bus short circuit protection is provided, and the short circuit is removed to automatically recover the bus.
And a fault signal reporting function.
256 devices can be hooked simultaneously.
The communication distance can reach 3000 m.
The slave station supports non-polar wiring.
Any topology wiring is supported: tree, star, bus.
The maximum bus voltage may be up to 48V.
Half duplex communication is employed.
Working temperature: minus 40 ℃ to plus 85 ℃.
5.1, Powerbus bus master station controller technical description:
powerbus belongs to the low voltage power supply bus technology. The control signal is modulated on the power supply cable, so that the traditional separated control cable and power supply cable are replaced, and the communication stability is greatly improved. Powerbus adopts full-width voltage transmission and current signal return mode, and provides high communication anti-jamming capability. Can adapt to various wires used on site and realize the function of remote communication. The cable can be laid in any mode of bus type, tree type or star type, and the like, so that construction and wiring are greatly facilitated, misconnection can be prevented, and construction and maintenance are simplified. The power management function can be provided for the Powerbus bus, and power supply, communication and fault monitoring of the bus are achieved. The Powerbus master station controller core chip adopts an advanced SOC framework and provides up to 20A of on-line current support at 2400 bps. High performance, low cost, high anti-interference ability and long-line performance with remarkable advantages.
The Powerbus bus master station controller has the technical characteristics that:
the bus can be powered, and communication and power supply do not need to be electrically isolated.
The bus has strong anti-interference capability and can be connected with the mains supply.
The bus current 20A (2400bps) can be supported.
Bus short protection is provided, and the short removal automatically restores the bus.
Fault signal reporting function.
256 pieces of equipment can be hooked up simultaneously.
The communication distance can reach 3000 m.
Support for non-polar wiring.
Support arbitrary topology routing: tree, star, bus.
No special cable requirements.
The maximum bus voltage can reach 48V.
An isolated RS485 and RS232 interface and a transparent serial port protocol, and can be compatible with the original RS-485 and RS-232 systems.
Supporting 9600bps and 2400bps half-duplex communication.
Perfect surge and EMC design, ensuring electromagnetic compatibility characteristics.
The wiring schematic of the Powerbus bus master station controller is shown in fig. 8. Possess RS232 and RS485 interface, can very conveniently set up the system and test. Or a serial port conversion module is used for carrying out communication test by using a computer serial port assistant. The power device and the heat sink are arranged, 20A bus power is stably supported, complete state indication, surge protection and EMC design are realized, isolated RS485 and RS232 interfaces are provided, the maximum bus voltage is supported by 48V, the farthest communication distance is 3000m, and special cable requirements are avoided.
As shown in fig. 9, EV620 is a core circuit board of the Powerbus bus master station controller, the core circuit board is in a single-sided layout, and there are no devices on the back side. Can be used as a daughter board and directly welded on the mainboard of the Powerbus master controller.
The Powerbus bus master station controller circuit comprises a power supply, an EV620 circuit board, a fuse F1, a power tube Q1, a triode Q2, a triode Q3, a capacitor C11, a resistor R11, a resistor R12, a resistor R13 and a unidirectional TVS tube, wherein the power supply is respectively connected with one end of a capacitor C11, a source electrode of the power tube Q1 and a V + pin of the EV620 circuit board through a fuse F1, the other end of the capacitor C11 is grounded, a grid electrode of the power tube Q1 is connected with a BH pin of the EV620 circuit board through a resistor R12, a drain electrode of the power tube Q1 is respectively connected with an L + pin of the EV620 circuit board, an emitter electrode of the triode Q3, one end of the resistor R11, a negative electrode of the unidirectional TVS tube and one line of a Powerbus, a collector electrode of the triode Q3 is respectively connected with a BL pin of the EV620 circuit board and a base electrode of a triode Q2, a base electrode of the triode Q3 is respectively connected with the other end of a resistor R11 and an emitter electrode of the Powerbus, a collector electrode of the triode Q2 and a collector, the GND pin of the EV620 board is grounded.
A schematic diagram of a core circuit board EV620 (daughter board) of the Powerbus master station controller is shown in fig. 10, a PB620 is a core chip on the core circuit board EV620 of the Powerbus master station controller, and the Powerbus master station controller EV620 (daughter board) is directly welded to a main board of the Powerbus master station controller. The HP pin of the PB620 chip is connected with the BAUD pin of the EV620 circuit board,
Figure BDA0002557503340000141
the pin is connected with a BRK pin of the EV620 circuit board, a COHN pin is connected with a base electrode of a triode T1, an emitting electrode of a triode T1 is grounded through a resistor R2, a collector electrode of the triode T1 is respectively connected with one end of a resistor R1, a base electrode of a triode T2 and a base electrode of a triode T3, and a collector electrode of the triode T2 is respectively connected with the other end of the resistor R1 and a V + pin of the EV620 circuit board; the collector of the triode T3 is grounded, the emitter of the triode T2 is respectively connected with the emitter of the triode T3, one end of the resistor R3 and one end of the capacitor C1, and the other end of the resistor R3 is respectively connected with the other end of the capacitor C1 and the BH pin of the EV620 circuit board; the pin 3V3 of the PB620 chip is respectively connected with one end of a capacitor C4 and one end of a capacitor C15, the other end of the capacitor C4 is grounded, the other end of the capacitor C15 is respectively connected with a reference ground and an OUT pin of the LDO, a GND pin of the LDO is grounded, and an IN pin of the LDO is respectively connected with a VCC end of the EV620 circuit board and a LM317 of the voltage regulatorIN pin, an ADJ pin of the regulator LM317 is connected to one end of a resistor R6, a collector of a transistor T4, one end of a resistor R5, and an input end of a regulator D2, a base of a transistor T4 is connected to a comm pin of a PB620 chip through a resistor R4, an emitter of a transistor T4 is grounded, an ANA pin of the PB620 chip is connected to one end of a capacitor C2 and one end of a resistor R15, the other end of a capacitor C2 is connected to a reference ground and one end of a resistor R12, the other end of a resistor R12 is connected to the other end of a resistor R15 and a collector of a transistor T6, an emitter of a transistor T6 is connected to the other end of a resistor R5, an OUT pin of a regulator LM317, and one end of a resistor R7, the other end of a resistor R7 is connected to an input end of a regulator D1, a base of a transistor T6 is connected to one end of a resistor R13, a common end of a regulator D1 and a common end of a regulator D2, One end of a resistor R14 and one end of a capacitor C3, the other end of a capacitor C3 is respectively connected with the other end of the resistor R14 and a reference ground, the output end of a voltage stabilizer D1 is respectively connected with the L + pin of the EV620 circuit board and one end of a resistor R9, the output end of a voltage stabilizer D2 is respectively connected with the BL pin of the EV620 circuit board and one end of a resistor R8, the other end of a resistor R8 is respectively connected with the other end of a resistor R9 and the collector of the triode T5, the base of the triode T5 is connected with the CONL pin of the PB620 chip through a resistor R10, and the emitter of the triode T.
The Powerbus bus master station controller has the following functions:
(1) high power mode
HP is a high-power mode switching pin, and a pull-up resistor is arranged in the HP. This pin is used to select the operating mode and communication rate. The pin is suspended or pulled up: the UART communication rate is 9600bps, and the supported bus current is 5A. Grounding the pin, entering a high power mode: the UART communication rate is 2400bps, and the UART can support the maximum bus current of 20A.
(2) Bus supply voltage with wide selection range
The Powerbus bus master station controller belongs to a low-voltage direct-current power supply bus and supports bus voltage direct current of 12V-48V. The bus voltage is at DC24V according to stadium requirements. The slave station voltage requirement and the wire voltage loss are selected within the range. Usually no different from a dc power supply line. And connecting an external AC/DC direct current switching power supply between the V + and the GND.
(3) UART communication interface
The Powerbus bus master station controller supports standard serial port timing data. The receiving and sending self-adaptation supports an 8-bit and 9-bit data mode, and the 9 th bit can be a data bit, a check bit and an address bit. 8-bit notch data, start bit + 8-bit data bit + stop bit, as shown in FIG. 11. 9-bit notch data, start bit + 8-bit data bit + 9 th-bit data bit + stop bit, as shown in fig. 12.
(4) MOSFET selection and thermal power consumption calculation
In fig. 9, Q1 is a bus supply MOSFET, and a power MOSFET is selected.
The P-MOSFET drive circuit of FIG. 9 provides power control for driving the P-MOSFET, with a drive voltage VgsSelecting V as 0-11VgsAnd the P-MOSFET has the voltage endurance of more than 20V.
The MOSFET is selected according to the bus current and the heat.
RDS(on)Parameters are MOSFET on-resistance, lower RDS(on)The MOSFETs of (a) generate less heat but are generally also more expensive, the MOS generates heat dissipation:
PD＝IRDS(on)
parallel MOSFETs to reduce heat: in order to reduce the heat generation amount, two MOSFETs may be connected in parallel, as shown in fig. 13, a power tube Q1 includes a power tube Q1A and a power tube Q1B connected in parallel, a source of the power tube Q1A is connected to a source of the power tube Q1B and a V + pin of the EV620 circuit board, a drain of the power tube Q1A is connected to a drain of the power tube Q1B and an L + pin of the EV620 circuit board, a gate of the power tube Q1A is connected to one end of a resistor R2B and a BH pin of the EV620 circuit board through a resistor R2A, and another end of the resistor R2B is connected to a gate of the power tube Q1B. R1A and R2B should be placed near the GATE electrode pin of the MOSFET. After parallel connection, each MOSFET bears half of current, the heat loss PD is reduced to one fourth, and the temperature rise and fall are reduced to one fourth.
When the specific Powerbus bus master station controller mainboard is applied, the power 20A is designed, and two MOSFETs IRF4905PBF with the on-resistance of 20m _ @10V are used for parallel connection (as shown in FIG. 11Q1 and Q2). When 20A is fully loaded, the total power is assumed on both MOSFETs: p ═ I2Rmos400 × 0.01-4W, each MOSFET takes up 2W of heat.
(5) Protective function
1) Short circuit protection
The Powerbus bus master station controller is provided with a complete bus fault detection mechanism. When the bus is in an on-line short circuit, the PB620 can immediately turn off the bus, prevent line accidents and protect main station power devices from being damaged. When the bus is normal, the BRK (Pin20) Pin of PB620 outputs a high level (typical value of 3.3V), and this signal can be used to report a signal for processing or to switch a relay or an LED indication signal. After the bus short circuit occurs, the BRK pin outputs low level. When the short circuit is removed, the PowerBus bus is automatically started, and the high level of the BRK pin is recovered.
The fuse on board the Powerbus bus master controller motherboard is 20A, and if the input power is reversed, or the rated load is exceeded, the fuse may be burned. Such as burning a fuse or requiring other current thresholds, the fuse is replaced.
When the bus is shorted, the on-board L + indicator of fig. 11 will go off and the BRK indicator will light up. After the short circuit is removed, the bus is automatically restored.
2) Overvoltage protection
The maximum input voltage of the Powerbus bus master station controller is 48V.
The on-output line surge protection Z3 provides power supply overvoltage protection: z3 at the power supply input of fig. 11 is a unidirectional transient suppression diode 5KP 48A. For suppressing on-line surges. The use of one-way prevents reverse negative voltage from damaging the on-board devices.
3) Power reverse connection protection
Z4 provides power reverse protection: z4 on fig. 11 is a unidirectional transient suppression diode 5KP 48A. For preventing inadvertent power reversal. A large current will pass through 5KP48A in the forward direction, blowing off the on-board FUSE F1(20A FUSE), cutting off the power supply.
4) Surge protection
In the application environment of the dc power supply system of the USB charging port of the stadium seat, the electronic device needs to withstand a wide input voltage from the load dump pulse and reverse polarity of the relay, the electromagnetic switch. Thus, the system configures an external transient absorption (zener diode or TVS).
In order to meet the electromagnetic compatibility characteristic standard requirement level of electronic and electric products of Surge Immunity (Surge Immunity), electric fast pulse train (EFT) and electrostatic discharge (ESD), a 1500W (SMCCJXXA) protection device is selected. Meet the surge protection of the standard GB/T17626.5(10/1000uS,20/80uS, ± 1000V).
In order to better absorb negative pulse and disturbance in EMC test and prevent reverse negative voltage generated by inductive load on long line, and to be more beneficial to port protection, a unidirectional (Uni-directional) TVS protection device is selected.
Not less than bus V when TVS clamping voltage is selectedbusOperating voltage to not affect bus operation, but high breakdown voltage VBRTVS of (2) to (I)ppThe clamping voltage is also higher, and the maximum reverse operating voltage V is selected for better protection of the components on the boardR＝100％～120％Vbus. The TVS characteristics and clamping voltage effects are shown in fig. 14.
5.2, Powerbus bus slave station receiver technical description:
the Powerbus slave station receiver adopts a low-voltage power supply bus technology, and the demand of equipment power supply and communication can be met through the Powerbus. The control signal is modulated on the power supply cable, so that the traditional separated control cable and power supply cable are replaced, and the communication stability is greatly improved. Powerbus adopts the mode that voltage is sent, and the current signal returns, has provided high communication interference killing feature. Can adapt to various wires used on site and realize the function of remote communication. The cable can be laid in any mode of bus type, tree type or star type, and the like, so that construction and wiring are greatly facilitated, misconnection can be prevented, and construction and maintenance are simplified.
The Powerbus slave station receiver transmits UART signals from the master station in a transparent mode, and 3.3V and 5V TTL communication levels can be compatible. The UART serial port of the slave station MCU can be directly connected to carry out equipment communication test. And a UART-to-USB module can be used, so that the test of sending back codes by connecting a computer is facilitated. The Powerbus slave receiver can provide a maximum power output of 1A, and can reduce the voltage required by the equipment to supply power for the equipment. And the on-load communication test can be carried out with a dummy load.
The Powerbus slave station receiver has the technical characteristics that:
the bus can be powered, and communication and power supply do not need to be electrically isolated.
The bus has strong anti-interference capability and can be connected with the mains supply.
256 pieces of equipment can be hooked up simultaneously.
The communication distance can reach 3000 m.
Support for non-polar wiring.
Support arbitrary topology routing: tree, star, bus.
No special cable requirements.
The maximum bus voltage can reach 48V.
RS-485 system of transparent serial protocol.
Adaptive 9600bps and 2400bps half-duplex communications.
3.3V and 5V compatible TTL traffic levels.
Serial port communication with an isolation design, ensuring electromagnetic compatibility, and compatibility with an additional power supply system.
The substation or load can be provided with a maximum 1A supply power.
Low cost solutions.
The schematic diagram of the connection of the Powerbus bus slave receiver is shown in FIG. 15. And (3) correctly connecting the target communication bus communication IO intelligent control unit, the MCU or the TTL TO USB module TO the TTL interface in the graph. And the same TTL communication level is selected and is connected to the MCU _3V3 or the MCU _5V input to supply power to the isolation side. The DC OUT power output interface is connected to a target load. The Powerbus LINE IN interfaces to a Powerbus two-wire bus. And starting the upper layer bus to perform communication debugging and opening.
The basic application circuit of the Powerbus bus slave receiver is shown in FIG. 16. PB331 is the core chip of Powerbus bus slave station receiver, the PI foot of PB331 chip connects the one end of resistance R31 and the one end of resistance R32, the other end ground connection of resistance R32, the other end of resistance R31 connects the collector of triode T11 respectively, the positive pole of diode D11, the positive pole of rectifier bridge MB6S, the negative pole of diode D11 connects one end and the DCS port of electric capacity C31 respectively, as the power supply output interface of Powerbus slave station receiver, the other end ground connection of electric capacity C31, the base of triode T11 connects PB331 chip PD foot through resistance R34, the emitter of triode T11 connects ground through resistance R33, the negative pole ground connection of rectifier bridge MB6S, rectifier bridge MB6S ac terminal connects Powerbus through fuse F2, two-way TVS pipe has been connected in parallel between rectifier bridge MB6S and the Powerbus.
(1) Power supply of load
The load power supply can be obtained from the DCS port of fig. 16, and the port voltage can be used as a normal DC power supply line to step down and supply the voltage to a low-voltage system (a USB charging module for DC24/DC5V conversion), or to load the load.
(2) Load requirement
The Powerbus bus is two buses of intelligence low pressure power supply, and the load can be arbitrary load: resistive, inductive. The load may be; the device comprises a motor, a stepping motor, an electric heating actuator, a relay and a high-power LED. The load current changes dynamically, and the communication is not influenced. The dc load connection is shown in fig. 17.
(3) Core circuit power supply
PB331 is a wide supply range and can use LDOs or DC/DC buck. The power supply system can be shared with an MCU (bus communication IO intelligent control unit). The power supply can be provided by a bus, and can also be powered by a standby battery or other external mains supply in a voltage reduction mode. As shown in fig. 18. In actual use, a bus power supply mode is adopted.
(4) Protective function
1) Short circuit protection
FUSE in the Powerbus bus slave receiver basic application circuit (FIG. 16) is a recoverable FUSE PPTC. The function is to prevent short circuit and reduce power-on impact. When a slave breaks down and becomes a short circuit condition, the FUSE can cause the slave to disengage from the bus without affecting the bus and other slaves. The master station can detect this fault by polling.
When a specific Powerbus slave station receiver is applied, the Powerbus slave station receiver can output maximum current of 1A. An onboard F2 of 900mA recoverable fuse. If the device works for a long time exceeding 900mA, the current is limited by F2. If the slave station is short-circuited by accident. F2 will limit the maximum current of the slave and the protection device F2 may also use a resistor that blows if the slave becomes a short circuit due to damage for any reason, thus disconnecting the slave without affecting the bus. The upper computer (MCU) can find out the fault slave station easily through communication routing inspection.
2) Overvoltage protection
The Powerbus slave station receiver has bus input voltage not exceeding 50V, and adopts bidirectional 48V transient suppression diode for protecting on-line surge and limiting input voltage.
3) Surge protection
And a bidirectional instantaneous current suppression diode is adopted to suppress the on-line surge.
The device selection and configuration method of the dc power system for the USB charging port of the stadium seat are shown in table 2. The system mainly comprises a direct current power system management platform (DCMS), a direct current power monitoring host (QC), a communication power distribution controller (TPC), a double-position intelligent control terminal module (ZM/2D), a unit intelligent control terminal module (ZM/1D), an equipment input power line, a terminal power supply and communication line, a field communication bus, a control communication network line, a control network optical fiber and the like.
6. A DC power supply system configuration method of a USB charging port of a stadium seat comprises the following steps:
(1) intelligent control terminal module (ZM): the system is divided into a double-position intelligent control terminal module (ZM/2D) and a unit intelligent control terminal module (ZM/1D) and is mounted in a wall-hung manner. Configured according to the actual seat number and requirements of the stadium. The number of bits of the intelligent control terminal module (double bit) is 2, and the number of bits of the intelligent control terminal module (unit) is 1. The number of output loops of each communication power distribution controller is limited to be 4 at most (WLE 1-WLE 4), the communication efficiency is mainly considered (the communication baud rate is recommended to be 2400bps when large current is applied), and the number of bits of the intelligent control terminal module is limited to be 8 at most when each path of output is limited. The maximum limit digits are: n × 4 × 40 × 2 × m (8 × 4 × 40 × 2 × m). The number m of the direct-current power supply monitoring hosts can be determined according to the actual dot digit and the digit requirement. Assuming that the number of points of the intelligent control terminal module (dibit) is a and the number of points of the intelligent control terminal module (unit) is a, the estimation method comprises the following steps: m is (a × 2+ b × 1)/(8 × 4 × 40 × 2). The number of communicating power distribution controllers (TPC) can be estimated at the same time: 40X 2 Xm.
(2) Communications power distribution controller (TPC): each direct current power supply monitoring host comprises 2 paths of field communication buses, and each path of communication bus can mount at most 40 communication power distribution controllers. The configuration is estimated according to the number of points and the number of digits of the intelligent control terminal module (ZM). And (4) wall-hung installation.
(3) Dc power supply monitoring host (QC): the configuration is estimated according to the number of points and the number of digits of the intelligent control terminal module (ZM). And (4) placing the glass fiber reinforced plastic in an area interlayer and installing the glass fiber reinforced plastic in a wall-hanging manner.
(4) The system is provided with 1 set of direct current power system management platform (DCMS) which is arranged in a control room and is installed in a floor type.
(5) A cable: according to the practical calculation, the tube penetration application is mainly used. The system comprises a device input power line (DWZ-BYJ-3 multiplied by 2.5), a terminal power supply and communication line (DWZ-BYJ-2 multiplied by 4), a field communication bus (RVS-2 multiplied by 1.5), a control communication network line (TCP/IP super five network lines) and a control network fiber (GYXTW single mode fiber). The terminal power and communication line (power bus) wiring may be mixed with the AC220V without the need for separate plumbing.
Figure BDA0002557503340000211
Figure BDA0002557503340000221
TABLE 2
A floor plan (partial) of the dc power system for the USB charging port of the stadium seat is shown in fig. 19. Combining with a system structure diagram (fig. 1), the system performs plane layout from top to bottom and in a layered distribution mode according to a 4-level system topology:
(1) central management/control level-dc power system management platform (DCMS).
(2) Regional control level-dc power supply monitoring host (QC).
(3) Distribution route control level-communicating distribution controller (TPC).
(4) Intelligent control terminal control-two-position intelligent control terminal module (ZM/2D) and unit intelligent control terminal module (ZM/1D).
The wiring diagram of the intelligent control terminal module (ZM) is shown in fig. 20. Due to the performance of the nonpolar wiring arbitrary topology of the Powerbus low-voltage direct-current carrier power supply bus, system faults caused by arbitrary intersection and wiring errors of the bus occurring in the construction of thousands of seat USB charging ports in a stadium are avoided, and therefore the design, construction, debugging and maintenance of a seat USB charging port direct-current power supply system in the stadium are simplified and easy.
7. The invention relates to an interface dividing method with other systems, which comprises the following steps:
the interface dividing method with a stadium seat manufacturer comprises the following steps: the intelligent management system of the direct current power supply provides a technical solution of a USB charging port of a stadium seat and coordinates an access mode with a stadium seat manufacturer. The dc power intelligent management system provides the stadium seat manufacturer with the connection cable of the USB charging port.
The interface dividing method with civil engineering comprises the following steps: and (5) reserving holes before civil engineering construction of a general packaging unit, deepening and marking the holes on a construction site.
The interface dividing method with installation comprises the following steps: all bridges (except in the weak current machine room), wire grooves and basement wall-through embedded sleeves related to the intelligent weak current system are borne by a main package installation unit, and other pipeline equipment is installed by the weak current unit. The intelligent management system of the direct current power supply finishes data reading and wiring work of various remote meters and is matched with the opened hole installation of the related meters of the general packaging electromechanical installation unit on the pipeline.
The interface dividing method with the grounding system comprises the following steps: the DC power supply intelligent management system supplies and installs a grounding system in a related system and is responsible for grounding and equipotential connection of weak current system equipment in a weak current room so as to form a perfect grounding system. And the main package installation unit is responsible for reserving the LEB terminal boxes into each weak current room.
The interface dividing method with the BIM comprises the following steps: and the BIM is matched with a general package installation unit to carry out BIM work, and the electricity utilization requirement of equipment is clarified in a deepened drawing.
The interface dividing method with the weak current system comprises the following steps: and completing the system integration work required by the weak current intelligent control system of the relevant electromechanical equipment.

Claims (10)

1. The utility model provides a stadium seat USB port intelligence control system that charges which characterized in that: the system comprises a direct-current power supply system management platform, a direct-current power supply area monitoring host, a communication power distribution controller and an intelligent control terminal module from top to bottom according to a communication control level, wherein the direct-current power supply system management platform adopts an industrial computer, a serial communication interface and a network interface to exchange information with an external system and is used for managing and controlling the whole system;
the direct current power supply area monitoring host establishes communication connection with the direct current power supply system management platform through the optical fiber transceiver, is used for monitoring the working state of each lower layer device in real time, and reports faults and events to the direct current system management platform;
the communication power distribution controller is connected with the direct current power source region monitoring host through the communication bus and the power supply line, is used for completing the butt joint of an upper protocol and a lower communication route and the link modulation of communication data and a power supply source, and combines the power supply line and the communication bus into a whole through the Powerbus bus master controller, so that the communication power distribution controller outputs partial communication signals and supplies power to share one bus.
And the intelligent control terminal module is connected with the output end of the communication power distribution controller through a Powerbus power supply bus, provides a power output port in an intelligent control mode according to a master control instruction of a direct-current power supply system management platform, and realizes USB charging management.
2. The intelligent stadium seat USB charging port control system as recited in claim 1, wherein: the direct-current power supply system management platform comprises a central controller, an industrial network switch and an optical fiber transceiver; and the central controller establishes communication connection with the direct current power supply area monitoring host through an industrial network switch and an optical fiber transceiver.
3. The intelligent stadium seat USB charging port control system as recited in claim 1, wherein: the input end of the direct current power source area monitoring host is connected to an industrial network switch of the direct current power source system management platform through an optical fiber transceiver, and the output end of the direct current power source area monitoring host is connected with the communication power distribution controller in a communication bus mode.
4. The intelligent stadium seat USB charging port control system as recited in claim 1, wherein: the communication power distribution controller comprises a communication routing unit, a communication signal modulation unit, an output control unit, an AC/DC switch power supply and a miniature circuit breaker, wherein the input end of the communication routing unit is connected with the output end of the direct current power supply region monitoring host through a communication bus, the output end of the communication routing unit is connected with the output control unit through the communication signal modulation unit, and a 220V input power supply is connected with the output control unit through the miniature circuit breaker and the AC/DC switch power supply to output DC24V safe voltage.
5. The intelligent stadium seat USB charging port control system as recited in claim 1, wherein: the intelligent control terminal module comprises a Powerbus bus slave station receiver, a bus communication IO intelligent control unit, a USB charging module, a human body detection unit and a sensing information input unit, wherein the Powerbus slave station receiver is connected with the output end of the output control unit of the communication power distribution controller through a Powerbus power supply bus, a power supply output interface of the Powerbus slave station receiver is connected with a power supply input interface of the bus communication IO intelligent control unit, the output DC24V voltage is controlled through the power supply intelligent output interface of the bus communication IO intelligent control unit, and the DC24V voltage is used as the input of the USB charging module to realize USB charging through variable voltage output; and a communication signal output interface of the Powerbus slave station receiver is connected with a communication input interface of the bus communication IO intelligent control unit, and an information acquisition output interface of the bus communication IO intelligent control unit is connected with the human body detection unit and the sensing information input unit.
6. The intelligent stadium seat USB charging port control system as recited in claim 5, wherein: the intelligent control terminal module is provided with a double-position intelligent control terminal and 2 specifications of a unit intelligent control terminal.
7. The intelligent stadium seat USB charging port control system as recited in claim 1, wherein: the Powerbus bus master station controller circuit comprises a power supply, an EV620 circuit board, a fuse F1, a power tube Q1, a triode Q2, a triode Q3, a capacitor C11, a resistor R11, a resistor R12, a resistor R13 and a unidirectional TVS tube, wherein the power supply is respectively connected with one end of a capacitor C11, a source electrode of the power tube Q1 and a V + pin of the EV620 circuit board through a fuse F1, the other end of the capacitor C11 is grounded, a grid electrode of the power tube Q1 is connected with a BH pin of the EV620 circuit board through a resistor R12, a drain electrode of the power tube Q1 is respectively connected with an L + pin of the EV620 circuit board, an emitter electrode of the triode Q3, one end of the resistor R11, a negative electrode of the unidirectional TVS tube and one line of a Powerbus, a collector electrode of the triode Q3 is respectively connected with a BL pin of the EV620 circuit board and a base electrode of the triode Q2, a base electrode of the triode Q3 is respectively connected with the other end of a resistor R11 and an emitter electrode of the EV620 and a collector wire of the TVS tube 2 through a resistor R, the GND pin of the EV620 board is grounded.
8. The intelligent stadium seat USB charging port control system as recited in claim 7, wherein: the core chip of the EV620 circuit board is a PB620 chip, the HP pin of the PB620 chip is connected with the BAUD pin of the EV620 circuit board,
Figure FDA0002557503330000021
the pin is connected with a BRK pin of the EV620 circuit board, a COHN pin is connected with a base electrode of a triode T1, an emitting electrode of the triode T1 is grounded through a resistor R2, and a collector electrode of the triode T1 is respectively connected with one of resistors R1The terminal, the base electrode of the triode T2 and the base electrode of the triode T3, and the collector electrode of the triode T2 are respectively connected with the other end of the resistor R1 and the V + pin of the EV620 circuit board; the collector of the triode T3 is grounded, the emitter of the triode T2 is respectively connected with the emitter of the triode T3, one end of the resistor R3 and one end of the capacitor C1, and the other end of the resistor R3 is respectively connected with the other end of the capacitor C1 and the BH pin of the EV620 circuit board; the pin 3V3 of the PB620 chip is respectively connected with one end of a capacitor C4 and one end of a capacitor C15, the other end of the capacitor C4 is grounded, the other end of the capacitor C15 is respectively connected with a reference ground and an OUT pin of the LDO, a GND pin of the LDO is grounded, an IN pin of the LDO is respectively connected with a VCC end of the EV620 circuit board and an IN pin of the regulator LM317, an ADJ pin of the regulator LM317 is respectively connected with one end of a resistor R6, a collector of a triode T4, one end of a resistor R5 and an input end of a regulator D2, a base of a triode T4 is connected with a CONM pin of the PB620 chip through a resistor R4, an emitter of a triode T4 is grounded, an ANA pin of the PB620 chip is respectively connected with one end of a capacitor C2 and one end of a resistor R15, the other end of a capacitor C68684 is respectively connected with a reference ground and one end of a resistor R12, the other end of the resistor R12, the other end of the resistor, The output end of the voltage stabilizer D1 is respectively connected with the L + pin of the EV620 circuit board and one end of the resistor R8, the other end of the resistor R8 is respectively connected with the other end of the resistor R9 and the collector of the triode T5, the base of the T5 is connected with the CONL pin of the PB620 chip through the resistor R10, and the emitter of the triode T5 is grounded.
9. The intelligent stadium seat USB charging port control system as recited in claim 7, wherein: the power tube Q1 comprises a power tube Q1A and a power tube Q1B which are connected in parallel, the source electrode of the power tube Q1A is connected with the source electrode of the power tube Q1B and the V + pin of the EV620 circuit board respectively, the drain electrode of the power tube Q1A is connected with the drain electrode of the power tube Q1B and the L + pin of the EV620 circuit board respectively, the grid electrode of the power tube Q1A is connected with one end of a resistor R2B and the BH pin of the EV620 circuit board respectively through a resistor R2A, and the other end of the resistor R2B is connected with the grid electrode of the power tube Q1B.
10. The intelligent stadium seat USB charging port control system as recited in claim 5, wherein: the Powerbus slave station receiver circuit comprises a PB331 chip, a PI pin of the PB331 chip is connected with one end of a resistor R31 and one end of a resistor R32, the other end of the resistor R32 is grounded, the other end of the resistor R31 is connected with a collector of a triode T11, an anode of a diode D11 and an anode of a rectifier bridge MB6S, a cathode of a diode D11 is connected with one end of a capacitor C31 and a DCS port respectively and serves as a power supply output interface of the Powerbus slave station receiver, the other end of a capacitor C31 is grounded, a base of a triode T11 is connected with a PD pin of the PB331 chip through a resistor R34, an emitter of the triode T11 is grounded through a resistor R33, a cathode of the rectifier bridge MB6S is grounded, an alternating current end of the rectifier bridge MB6S is connected with a Powerbus through a fuse F2, and a bidirectional TVS tube is connected between the rectifier bridge MB6 596.
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