CN105591757A - Ethernet interface circuit of integrated controller for commercial air conditioner wireless communication system - Google Patents
Ethernet interface circuit of integrated controller for commercial air conditioner wireless communication system Download PDFInfo
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- CN105591757A CN105591757A CN201510847453.2A CN201510847453A CN105591757A CN 105591757 A CN105591757 A CN 105591757A CN 201510847453 A CN201510847453 A CN 201510847453A CN 105591757 A CN105591757 A CN 105591757A
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Abstract
The present invention discloses an Ethernet interface circuit of an integrated controller for a commercial air conditioner wireless communication system, and relates to the field of the part technology of the data interaction network. The circuit comprises an Ethernet chip U10, and the U10 uses a DM9161AE; the 1 foot of an interface RJ1 is connected with the TX+ pin of the chip U10, the 2 foot of an interface RJ1 is connected with the TX- pin of the chip U10, and the 3 foot of an interface RJ1 is connected with the RX+ pin of the chip U10; a resistor R14, a resistor R15 and a capacitor C11 are arranged between the 1 foot and the 2 foot of the interface RJ1, and a resistor R16, a resistor R17 and a capacitor C12 are arranged between the 2 foot and the 3 foot of the interface RJ1; the 4 foot and the 5 foot of the interface RJ1 are connected with a power supply, and the 3 foot and the 4 foot of the interface RJ1 are connected in parallel with a filtering capacitor C9. The Ethernet interface circuit of an integrated controller for a commercial air conditioner wireless communication system is stable in data transmission.
Description
Technical field
The present invention relates to the component technology field of data interaction network, relate in particular to the ethernet interface circuit of a kind of business air conditioner wireless communication system Centralized Controller.
Background technology
Along with central air-conditioning application is increasingly extensive, the mode of operation that the control of conventional central air-conditioning is desk-top, owing to user being had to higher operation requirements, general optimum operation and the breakdown maintenance that is difficult to guarantee air-conditioning must be carried out with the form of dispatching officers to go on business again, owing to cannot obtaining in advance accurate fault data, increased maintenance time, efficiency is low. Wireless communication system can use Centralized Controller, and the ethernet interface circuit indispensable assembly that is Centralized Controller, but the transmission data stability of the ethernet interface circuit of prior art is poor.
Summary of the invention
Technical problem to be solved by this invention is to provide the ethernet interface circuit of a kind of business air conditioner wireless communication system Centralized Controller, and described ethernet interface circuit has the feature of transmission data stabilization.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the ethernet interface circuit of Centralized Controller for a kind of business air conditioner wireless communication system, it is characterized in that: described self adaptation ethernet interface circuit comprises Ethernet chip U10, U10 uses DM9161AE, 1 pin of interface RJ1 connects the TX+ pin of chip U10, 2 pin of interface RJ1 connect the TX-pin of chip U10, 3 pin of interface RJ1 connect the RX+ pin of chip U10, between 1 pin of interface RJ1 and 2 pin, be provided with resistance R 14, resistance R 15 and capacitor C 11, between 2 pin of interface RJ1 and 3 pin, be provided with resistance R 16, resistance R 17 and capacitor C 12, 4 pin and 5 pin of interface RJ1 connect power supply, and are parallel with filter capacitor C9 on 3 pin and 4 pin, 6 pin of interface RJ1 connect the RX-pin of chip U10, and 7 pin of interface RJ1 are unsettled, the 8 pin ground connection of interface RJ1, 9 pin of interface RJ1 connect power supply through resistance R 20, and 10 pin of interface RJ1 connect and are divided into two-way, and the first via connects the LINK/ACTLED/OP2 pin of chip U10, and the second tunnel connects power supply through resistance R 37, 11 pin of interface RJ1 connect and are divided into two-way, and the first via connects the FDX/COLLED/OP0 pin of chip U10, and the second tunnel connects power supply through resistance R 35, the SPEEDLED/OP1 pin of chip U10 connects power supply through resistance R 36, the AVDD pin of chip U10 connects power supply, and on this pin, is parallel with capacitor C 13 and capacitor C 14, on the REF_CLK/XT2 pin of described chip U10, be connected with crystal oscillator generator X3, other pin of chip U10 is connected with the respective pins on Centralized Controller.
The beneficial effect that adopts technique scheme to produce is: described too network interface circuit uses DM9161AE type master chip, and configure corresponding peripheral circuit, make the transmission data that DM9161AE type master chip can be stable, improve the stability of transfer of data, made described communication system work more stable.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is a kind of theory diagram of business air conditioner wireless communication system;
Fig. 2 is a kind of governor circuit schematic diagram of Centralized Controller;
Fig. 3 is the enlarged drawing at A place in Fig. 2;
Fig. 4 is the enlarged drawing at B place in Fig. 2;
Fig. 5 is the enlarged drawing at C place in Fig. 2;
Fig. 6 is the enlarged drawing at D place in Fig. 2;
Fig. 7 is the enlarged drawing at E place in Fig. 2;
Fig. 8 is the enlarged drawing at F place in Fig. 2;
Fig. 9 is described interface module schematic diagram;
Figure 10-Figure 11 is the schematic diagram of described power module;
Figure 12-Figure 14 is self adaptation 10/100M ethernet interface circuit schematic diagram of the present invention;
Figure 15 is the main control chip U2 schematic diagram in described wireless controller;
Figure 16 is the schematic diagram of connector SMD-25 in described wireless controller;
Figure 17-Figure 18 is the schematic diagram of half-duplex circuit in described wireless controller.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment. Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
A lot of details are set forth in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization without prejudice to intension of the present invention in the situation that, and therefore the present invention is not subject to the restriction of following public specific embodiment.
As shown in Figure 1, for a kind of business air conditioner wireless communication system, comprise monitor terminal, Centralized Controller, wireless controller and wireless transport module, between described monitor terminal and Centralized Controller, carry out bidirectional data interaction by the network interface on router or WIFI interface, described wireless transport module is arranged on the off-premises station of air-conditioning, the corresponding wireless controller of each group indoor apparatus of air conditioner, wireless controller is by the data interaction of carrying out on serial ports and described air-conditioner outdoor unit, wireless transport module carries out data interaction by wireless network and wireless controller, the operational factor of indoor apparatus of air conditioner and off-premises station gathers by wireless controller, above-mentioned parameter is passed through successively Centralized Controller by wireless controller, router is uploaded to monitor terminal and shows and process, monitor terminal passes through router successively, Centralized Controller and wireless controller reach indoor apparatus of air conditioner by under control command, the operation of indoor apparatus of air conditioner control air-conditioner outdoor unit.
Described Centralized Controller comprises governor circuit and self adaptation ethernet interface circuit. Described governor circuit comprises ARM main control chip U3, and main control chip is provided with interface module, power filtering module, clock module, watchdog module and power module, as shown in Fig. 2-9.
The main control chip U3 of Centralized Controller governor circuit selects STM company based on 32 ARM single-chip microcomputer STM32F107VB of Cortex-M3 kernel. This single-chip microcomputer use ARM up-to-date, the Cortex-M3 kernel of advanced framework, excellent real-time performance, outstanding power consumption control, the peripheral hardware of outstanding and innovation, farthest integrating, is easy to exploitation, can make product come into the market fast. The interconnected Series of MCU characteristic of STM32F107VB bright spot is built-in 10/100M Ethernet MAC controller (MAC), supports 10/100M self adaptation, full duplex half-duplex self adaptation.
As shown in Figure 8, described watchdog module comprises chip 706S type watchdog chip U4, 1 pin of described U4 is divided into two-way, the first via connects power supply through resistance R 38, the second tunnel connects 8 pin of U4 through resistance R 32, 2 pin of chip U4 connect power supply, and on this pin, be parallel with filter capacitor C22, 3 pin of chip U4 and 4 pin ground connection, 5 pin of chip U4 are unsettled, 6 pin of chip U4 are divided into two-way, the first via is connected with the WDI pin of described main control chip U3, the second tunnel is divided into two-way after resistance R 42, the first via is connected with power supply, the second tunnel is connected with the power output end of battery and the VBAT pin of main control chip U3 respectively after resistance R 44, 7 pin of chip U4 are divided into three tunnels after resistance R 39, the first via is connected with the NRST pin of main control chip U3, the second tunnel connects power supply through resistance R 41, Third Road is through capacitor C 23 ground connection.
As shown in Figure 5, described governor circuit also comprises reference voltage input module, comprise inductance L 3-L4, one end of inductance L 4 is successively through capacitor C 40, after resistance R 47, be connected with one end of capacitor C 39, the other end of capacitor C 39 is connected with the other end of inductance L 4, inductance L 4 connects power supply with the node of capacitor C 39, inductance L 4 connects power supply with the node of capacitor C 40, the node ground connection of capacitor C 39 and resistance R 47, the node ground connection of capacitor C 40 and resistance R 47, one termination inductance L 4 of inductance L 3 and the node of capacitor C 40, the VREF+ pin of another termination main control chip U3 of inductance L 3, on VREF+ pin, be parallel with filter capacitor C41, the VDDA pin of main control chip U3 connects the node of inductance L 3 and inductance L 4.
As shown in Figure 9, described interface module comprises RS232 interface module, RS485 interface module and CAN interface module, 1 pin and 4 pin of connector DB9 are unsettled, 5 pin ground connection, 2 pin of connector DB9 are connected with the T2OUT pin of RS232 transceiver U8, 3 pin of connector DB9 are connected with the R2IN pin of RS232 transceiver U8, the T2IN pin of RS232 transceiver U8 is connected with the UART2TX pin of main control chip U3, the R2OUT pin of RS232 transceiver U8 is connected with the UART2RX pin of main control chip U3, 5 pin of connector DB9 are connected with the CANH pin of CAN chip U6 through resistance R 49, 6 pin of connector DB9 are connected with the CANL pin of CAN chip U6 through resistance R 48, the TXD pin of CAN chip U6 is connected with the CANTXD pin of main control chip U3, the RXD pin of CAN chip U6 is connected with the CANRXD pin of main control chip U3, 8 pin of connector DB9 are connected with the A pin of RS485 transceiver U7 through resistance R 53, 7 pin of connector DB9 are connected with the B pin of RS485 transceiver U7 through resistance R 52, the R0_RXD pin of RSS485 transceiver U7 is connected with the UART4RX pin of main control chip U3, the DI_TXD pin of RSS485 transceiver U7 is connected with the UART4TX pin of main control chip U3.
As shown in Figure 10-11, described power module comprises rectifier bridge MB6S, power supply chip MC34063AD and LM1117MPX_3.3, the input of power supply is connected with the input of rectifier bridge MB6S, the cathode output end of rectifier bridge MB6S is divided into three tunnels after insurance F1, the first via is connected with one end of resistance R 4, the second tunnel is connected with 6 pin of power supply chip MC34063AD, and Third Road is ground connection after diode D1; The other end of resistance R 4 is connected with 1 pin, 7 pin and 8 pin of power supply chip MC34063AD respectively, capacitor C 6 and capacitor C 7 are connected in parallel between 6 pin and ground of power supply chip MC34063AD, the 4 pin ground connection of power supply chip MC34063AD, ground connection after the 3 foot meridian capacitor C8 of power supply chip MC34063AD, 2 pin of power supply chip MC34063AD are divided into two-way, the first via is through diode D2 ground connection, and the second tunnel is connected with one end of inductance L 1; The other end of inductance L 1 is divided into four tunnels, and the first via is ground connection after resistance R 5, resistance R 10 successively, and the second tunnel is through capacitor C 1 ground connection, and Third Road is through capacitor C 2 ground connection, and Si road is connected with 3 pin of power supply chip LM1117MPX_3.3; The 5 pin connecting resistance R5 of power supply chip MC34063AD and the node of resistance R 10; The 1 pin ground connection of power supply chip LM1117MPX_3.3; 2 pin of power supply chip LM1117MPX_3.3 and 4 pin are divided into three tunnels after merging, the first via is through capacitor C 4 ground connection, the second tunnel is through capacitor C 3 ground connection, Third Road is ground connection after resistance R 6 and light emitting diode D4 successively, the power output end that 2 pin of power supply chip LM1117MPX_3.3 and 4 pin are described power module.
As shown in Figure 12-14, the invention discloses the ethernet interface circuit of a kind of business air conditioner wireless communication system Centralized Controller, comprise Ethernet chip U10, U10 uses DM9161AE, 1 pin of interface RJ1 connects the TX+ pin of chip U10,2 pin of interface RJ1 connect the TX-pin of chip U10,3 pin of interface RJ1 connect the RX+ pin of chip U10, between 1 pin of interface RJ1 and 2 pin, be provided with resistance R 14, resistance R 15 and capacitor C 11, between 2 pin of interface RJ1 and 3 pin, be provided with resistance R 16, resistance R 17 and capacitor C 12; 4 pin and 5 pin of interface RJ1 connect power supply, and are parallel with filter capacitor C9 on 3 pin and 4 pin; 6 pin of interface RJ1 connect the RX-pin of chip U10, and 7 pin of interface RJ1 are unsettled, the 8 pin ground connection of interface RJ1; 9 pin of interface RJ1 connect power supply through resistance R 20, and 10 pin of interface RJ1 connect and are divided into two-way, and the first via connects the LINK/ACTLED/OP2 pin of chip U10, and the second tunnel connects power supply through resistance R 37; 11 pin of interface RJ1 connect and are divided into two-way, and the first via connects the FDX/COLLED/OP0 pin of chip U10, and the second tunnel connects power supply through resistance R 35; The SPEEDLED/OP1 pin of chip U10 connects power supply through resistance R 36; The AVDD pin of chip U10 connects power supply, and on this pin, is parallel with capacitor C 13 and capacitor C 14; On the REF_CLK/XT2 pin of described chip U10, be connected with crystal oscillator generator X3; Other pin of chip U10 is connected with the respective pins on Centralized Controller.
Described too network interface circuit uses DM9161AE type master chip, and configures corresponding peripheral circuit, makes the transmission data that DM9161AE type master chip can be stable, has improved the stability of transfer of data, makes described communication system work more stable.
As shown in Figure 15-18, described wireless controller comprises main control chip U2, connector SMD-25 and half-duplex circuit, and described U2 uses STM8S103Fx/TSSOP20 type processor, and described control chip U2 is connected with described half-duplex circuit by connecting SMD-25.
As shown in Figure 17-18, described half-duplex circuit comprises wireless transmission chip U1, and U1 uses SI4432, and 1 pin of described chip U1 is connected with power supply with 12 pin; 2 pin of chip U1 are divided into two-way, the first via is connected with power supply through inductance L C1, capacitor C 1, capacitor C 2 and capacitor C 3 are connected in parallel on the input of power supply, the second tunnel is connected with one end of capacitor C 0, the other end of capacitor C 0 is through being divided into two-way, the first via is ground connection after capacitor C HM, resistance R HM successively, and the second tunnel is connected with 3 pin of duplexer chip UPG2214TK; 3 pin of wireless transmission chip U1 are divided into two-way, the first via connects 4 pin of wireless transmission chip U1 after inductance L R1, the second tunnel is connected with one end of inductance L R2 and 1 pin of switch chip UPG2214TK respectively after capacitor C R1, the other end of inductance L R2 respectively with one end of capacitor C R2 and 4 pin of wireless transmission chip U1, the other end ground connection of capacitor C R2, is parallel with filter capacitor C12 on 1 pin of switch chip UPG2214TK; The 4 foot meridian capacitor C10 ground connection of switch chip UPG2214TK, 5 pin of switch chip UPG2214TK are connected with antenna ANT after inductance L M1, and capacitor C M2 is connected in parallel on 5 pin of described UPG2214TK, the 6 foot meridian capacitor C9 ground connection of switch chip UPG2214TK; 5 pin and 9 pin of switch chip UPG2214TK are unsettled, 7 pin of switch chip UPG2214TK and 8 pin are program input pin, 18 pin of described switch chip UPG2214TK connect crystal oscillator generation module, and other pin of described switch chip UPG2214TK is connected with the respective pins on the main control chip of wireless module.
SI4432 just plays signal transmitting effect at wireless network, do not possess the function of data processing, go deal with data so also add a single-chip microcomputer, select the single-chip microcomputer that a kernel that STM company goes out is STM8 here, model is STM8S103F, it is little that this single-chip microcomputer has volume, stable performance, antijamming capability is strong, safety, the features such as processing speed is fast, and Peripheral Interface is abundant.
Wireless network is to adopt 915M frequency range, with high performance SiliconLabsEZRadioPRO series ISM band wireless chip SI4432, can arrive-121dbm of this kind of chip receiving sensitivity, because of its transmitting power large, receiving sensitivity is high, can be transferred to the distance of km, have the title of " king through walls ". It can pass through multistory reinforced concrete walls, is the optimal wireless module of doing Smart Home, wireless dish-order, industrial remote controller etc. Wireless network protocol adopts " password+IP address+frequency range " to draw unique network by certain algorithm, effectively reduces co-channel interference, with the interference of product, effectively prevents that other people from usurping probability, increases network security. Monitor terminal is mainly processed Password Input, IP address setting, and timed task is set, and time synchronous processed some significant datas.
Wireless network software Protocol Design: data packing sends, and the form of bag is: frame head+IP address+password+data length+data+CRC test value. Frame head: be divided into Frame and instruction frame, length is all 1 byte; IP address: length is 2 bytes, must user oneself set. Password: set by user oneself, length is 6 bytes; Data length: be transmission data amount check, account for a byte; Data: the longest can 32 bytes; CRC test value: CRC Examination region is the CRC test value that frame head+IP address+password+data length+data draw 2 bytes, and its multinomial is:
Wireless network adopts the mode of one master and multiple slaves to carry out networking, is collected the form of information by host computer polls slave, and slave is in passive mode, by host assignment network sovereignty, and must releasing network after obtaining the slave of network sovereignty to send bag data; Between slave, can not mutually transmit data.
Described communication system is utilized wireless network communication technique, integrated application embedded system, database technology, from hardware to software, designed and Implemented the remote monitoring function of central air-conditioning. This Remote Monitoring System for Central Air-conditioning can normally complete most of function of local console, and modern design, reliable operation, way to manage are flexible and efficient, and its design implementation method has positive effect for current similar central air-conditioning product.
Claims (1)
1. the ethernet interface circuit of a business air conditioner wireless communication system use Centralized Controller, it is characterized in that: described self adaptation ethernet interface circuit comprises Ethernet chip U10, U10 uses DM9161AE, 1 pin of interface RJ1 connects the TX+ pin of chip U10,2 pin of interface RJ1 connect the TX-pin of chip U10,3 pin of interface RJ1 connect the RX+ pin of chip U10, between 1 pin of interface RJ1 and 2 pin, be provided with resistance R 14, resistance R 15 and capacitor C 11, between 2 pin of interface RJ1 and 3 pin, be provided with resistance R 16, resistance R 17 and capacitor C 12; 4 pin and 5 pin of interface RJ1 connect power supply, and are parallel with filter capacitor C9 on 3 pin and 4 pin; 6 pin of interface RJ1 connect the RX-pin of chip U10, and 7 pin of interface RJ1 are unsettled, the 8 pin ground connection of interface RJ1; 9 pin of interface RJ1 connect power supply through resistance R 20, and 10 pin of interface RJ1 connect and are divided into two-way, and the first via connects the LINK/ACTLED/OP2 pin of chip U10, and the second tunnel connects power supply through resistance R 37; 11 pin of interface RJ1 connect and are divided into two-way, and the first via connects the FDX/COLLED/OP0 pin of chip U10, and the second tunnel connects power supply through resistance R 35; The SPEEDLED/OP1 pin of chip U10 connects power supply through resistance R 36; The AVDD pin of chip U10 connects power supply, and on this pin, is parallel with capacitor C 13 and capacitor C 14; On the REF_CLK/XT2 pin of described chip U10, be connected with crystal oscillator generator X3; Other pin of chip U10 is connected with the respective pins on Centralized Controller.
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| CN201510847453.2A CN105591757A (en) | 2015-11-30 | 2015-11-30 | Ethernet interface circuit of integrated controller for commercial air conditioner wireless communication system |
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