CN102546975B - Active-service bus taking information issuing device - Google Patents
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- CN102546975B CN102546975B CN201210001282.8A CN201210001282A CN102546975B CN 102546975 B CN102546975 B CN 102546975B CN 201210001282 A CN201210001282 A CN 201210001282A CN 102546975 B CN102546975 B CN 102546975B
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Abstract
The invention relates to the field of intelligent transportation, in particular to an active-service bus taking information issuing device which is applicable to a public transportation system. The active-service bus taking information issuing device overcomes the defects that a conventional bus taking information issuing device cannot provide a real-time and precise bus position and is high in cost, low in stability and difficult to popularize. The whole bus taking information issuing system comprises a passenger mobile phone user, as well as the active-service bus taking information issuing device and a bus information server which are positioned in a bus station, wherein the active-service bus taking information issuing device communicates with the bus information server in a wireless 3G network way and communicates with the passenger mobile phone user in a Wi-Fi (wireless fidelity) network communication way. The active-service bus taking information issuing device communicates with the bus information server through a 3G network, so that the real-time performance is high; the active-service bus taking information issuing device is in information link with the passenger user in the Wi-Fi network communication way, so that the convenience and the practicality are high; the active-service bus taking information issuing device has a multiple reliable design, so that stable running of the system is ensured to the maximum extent.
Description
Technical field
The present invention relates to intelligent transportation field, particularly a kind of device that carries out the issue of active service type transit riding information for public transportation system.
Background technology
Along with socioeconomic development, the ability that people buy private car is more and more stronger, personal car brings convenience to people's trip, but too much personal car will cause a lot of traffic problems, as congested in traffic accident, road, environmental pollution and energy resource consumption etc.For head it off, government advocates people and goes out row major selection public transportation vehicle, carries out public transport policy in advance.Therefore the status of public transport is more and more important.But the public transportation system in city is less towards the amount of information of passenger's issue at present, the mode of passenger's obtaining information is single, when this road bus arrive at a station, from the distance at this station, also have these information such as how many, passenger cannot be known, therefore passenger is long-time in bus stop possibly blindly waits for, this brings great inconvenience to traveler.Although electronic public transport stop board has been installed in the bus stop of the part circuit in some city, can show intuitively vehicle position information by LED light, but the installation of electronic public transport stop board, management, maintenance cost are very high, the whole public bus networks that are unsuitable in city are promoted the use of.
The fast development of mobile network and smart mobile phone technology in recent years, provides technical feasibility for people utilize the information of mobile phone wireless inquiring bus." a kind of real-time bus position information query system " of number of patent application 201110054106.6 provides a kind of and accesses the real-time bus information inquiring system that WAP server is realized public bus network inquiry, the inquiry of public transport real time position, bus arrival inquiry, bus electronic stop board demonstration, i.e. " mobile phone electronic station board " by surfing Internet with cell phone.Number of patent application: 201110125290.9 " a kind of bus line inquiry method of mobile terminal, installation and system " provides a kind of bus line inquiry method based on mobile terminal, according to the geographical position of described mobile terminal and described destination information, carry out public bus network inquiry, and after the public bus network information that inquiry is obtained is sent to described mobile terminal and confirms, to described mobile terminal, feed back the details of the public bus network that described mobile terminal confirms.
The real-time position information of utilizing mobile device to inquire about concrete public transport has been sketched in above-mentioned two patent applications, and introduced whole system framework, but be only to provide a kind of method, be not all specifically related to transit riding information delivery apparatus, do not relate to the reliability of device, the problems such as stability yet.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defect that existing transit riding information delivery apparatus can not provide in real time accurate position of bus, the active-service bus taking information issuing device of a kind of low cost, high stability is specifically provided, thereby provides a kind of simple, quick and effective transit riding information inquiry mode.
The technical scheme that the present invention solves its technical problem is:
Active-service bus taking information issuing device, this information delivery apparatus comprises LPC3250 microcontroller, Wi-Fi communication module, 3G communication module, watchdog circuit and network interface interface circuit; Connection between described device:
Wi-Fi communication module adopts RT3662 module to be connected with the first serial of LPC3250 microcontroller;
3G communication module adopts EM770W module to be connected with the 3rd serial ports of LPC3250 microcontroller;
The M_TXD2 pin of LPC3250 microcontroller is connected with the R1IN pin of the MAX232 chip of watchdog circuit;
The M_RXD2 pin of LPC3250 microcontroller is connected with the T1OU pin of the MAX232 chip of watchdog circuit.
RT3662 module is connected with the first serial of LPC3250 microcontroller:
The W_TXD pin of RT3662 module is connected with the M_RXD1 pin of LPC3250 microcontroller;
The W_RXD pin of RT3662 module is connected with the M_TXD1 pin of LPC3250 microcontroller;
The W_RESET pin of RT3662 module is connected with the M_P1.0 pin of LPC3250 microcontroller;
The W_GND pin of RT3662 module is connected with the M_GND pin of LPC3250 microcontroller, and while ground connection.
EM770W module is connected with the 3rd serial ports of LPC3250 microcontroller:
The C_RX pin of EM770W module is connected with the M_TXD3 pin of LPC3250 microcontroller;
The C_TX pin of EM770W module is connected with the M_RXD3 pin of LPC3250 microcontroller;
The C_CTS pin of EM770W module is connected with the M_RTS3 pin of LPC3250 microcontroller;
The C_RFR pin of EM770W module is connected with the M_CTS3 pin of LPC3250 microcontroller;
The C_DTR pin of EM770W module is connected with the M_DTR3 pin of LPC3250 microcontroller;
The C_DCD pin of EM770W module is connected with the M_DCD3 pin of LPC3250 microcontroller;
The C_RI pin of EM770W module is connected with the M_RI3 pin of LPC3250 microcontroller;
The C_GND pin of EM770W module is connected with the M_GND pin of LPC3250 microcontroller;
The C_PERST_N pin of EM770W module is connected with the M_P1.1 pin of LPC3250 microcontroller;
EM770W module is connected with USIMCard's:
The C_RST pin of EM770W module is connected with the USIM_RST pin of USIMCard;
The C_IO pin of EM770W module is connected with the USIM_IO pin of USIMCard;
The C_VREG_USIM pin of EM770W module is connected with the USIM_VCC pin of USIMCard;
The C_CLK pin of EM770W module is connected with the USIM_CLK pin of USIMCard;
The C_GND pin of EM770W module is connected with the USIM_GND pin of USIMCard
Watchdog circuit comprises: serial ports level conversion MAX232 chip, AT89C2051 chip, the first triode (T1), the first relay (J1), the second triode (T2), the second relay (J2), the 3rd triode (T3), the 3rd relay (J3); Connection between the device of formation watchdog circuit:
The R1IN pin of MAX232 chip is connected with the M_TXD2 pin of LPC3250 microcontroller;
The T1OU pin of MAX232 chip is connected with the M_RXD2 pin of LPC3250 microcontroller;
The R1OU pin of MAX232 chip is connected with the A_RXD pin of AT89C2051 chip;
The T1IN pin of MAX232 chip is connected with the A_TXD pin of AT89C2051 chip;
The P1.0 pin of AT89C2051 chip is connected with the base stage b of the first triode T1 by resistance, the emitter e of the first triode T1 is connected with the control pin J1_K of the first relay J 1, and the two ends of the normally closed switch JK1 of the first relay J 1 are connected with the power interface of LPC3250 microcontroller with+3.3V respectively;
The P1.1 pin of AT89C2051 chip is connected with the base stage b of the second triode T2 by resistance, the emitter e of the second triode T2 is connected with the control pin J2_K of the second relay J 2, and the two ends of the normally closed switch JK2 of the second relay J 1 are connected with the power interface of Wi-Fi communication module with+5V respectively;
The P1.2 pin of AT89C2051 chip is connected with the base stage b of the 3rd triode T2 by resistance, the emitter e of the 3rd triode T3 is connected with the control pin J3_K of the 3rd relay J 3, and the two ends of the normally closed switch JK3 of the 3rd relay J 3 are connected with the power interface of 3G communication module with+3.3V respectively.
The present invention compares had beneficial effect with prior art
(1) active-service bus taking information issuing device adopts Wi-Fi communication mode to be connected with passenger cellphone subscriber, passenger is as long as open with mobile phone the real-time position information that Wi-Fi function just can query aim public transport, be a kind of mode of simply, fast and effectively obtaining the riding information of target public transport, for passenger selects suitable trip mode, provide convenience.
(2) between active-service bus taking information issuing device and Bus information server, adopt 3G network mode to communicate by letter, according to communication protocol, can transmit fast, accurately and in large quantities many public transport positional informations to passenger, be well positioned to meet each passenger's information requirement, real-time is high.
(3) active-service bus taking information issuing device has not only designed master controller and carries out reset pin with 3G communication module, Wi-Fi communication module and be connected, also increased watchdog circuit, have the deadlock of communication link state and device is carried out to, from detecting and self-healing function, therefore have very high reliability.
(4) what active-service bus taking information issuing device CPU adopted is the LPC3250 microcontroller based on 926EJ-S core, and its clock frequency can reach 266MHz, and data-handling capacity is very high.Extended out network interface interface simultaneously, convenient debugging, and can adopt wired mode to be connected to Internet, there is higher expandability.
(5) it is simple in structure that active-service bus taking information issuing device has hardware composition, and cost is low, advantage easy for installation.
Accompanying drawing explanation
The overall physical structure block diagram of Fig. 1 active service type transit riding information issuing system.
Fig. 2 active-service bus taking information issuing device schematic diagram.
Fig. 3 Wi-Fi communication module schematic diagram.
Figure 43 G communication module schematic diagram.
Fig. 5 USIM Card interface circuit schematic diagram.
Fig. 6 watchdog circuit schematic diagram.
Fig. 7 network interface interface circuit schematic diagram.
Concrete enforcement
The invention will be further described by reference to the accompanying drawings:
Active-service bus taking information issuing device, as Fig. 2 to Fig. 7, this device comprises: LPC3250 microcontroller (MCU), Wi-Fi communication module, 3G communication module, watchdog circuit and network interface interface circuit.
(1) Wi-Fi communication module, as Fig. 3, effect is that passenger utilizes the Wi-Fi of own mobile phone and the Wi-Fi communication module of active-service bus taking information issuing device are connected and communicate by letter, as long as user is the target public transport license number of input oneself, Wi-Fi communication module can be target bus particular location, from station, also have how many distances, the information such as E.T.A send to passenger cellphone subscriber; Wi-Fi communication module is selected RT3662 module, and RT3662 module is connected with LPC3250 microcontroller:
The W_TXD pin of RT3662 module is connected with the M_RXD1 pin of LPC3250 microcontroller;
The W_RXD pin of RT3662 module is connected with the M_TXD1 pin of LPC3250 microcontroller;
The W_RESET pin of RT3662 module is connected with the M_P1.0 pin of LPC3250 microcontroller;
The W_GND pin of RT3662 module is connected with the M_GND pin of LPC3250 microcontroller and while ground connection;
(2) 3G communication module, as Fig. 4, Fig. 5, effect is that active-service bus taking information issuing device is after receiving passenger's inquiry request, utilize 3G communication mode that solicited message is transmitted to Bus information server, Bus information server recycling 3G communication mode is passed to active-service bus taking information issuing device the real-time more specific location information of target bus, then by Wi-Fi mode, is transmitted to passenger cellphone subscriber; 3G communication module is selected the EM770W module of WCDMA communication mode, and EM770W module is connected with LPC3250 microcontroller:
The C_RX pin of EM770W module is connected with the M_TXD3 pin of LPC3250 microcontroller;
The C_TX pin of EM770W module is connected with the M_RXD3 pin of LPC3250 microcontroller;
The C_CTS pin of EM770W module is connected with the M_RTS3 pin of LPC3250 microcontroller;
The C_RFR pin of EM770W module is connected with the M_CTS3 pin of LPC3250 microcontroller;
The C_DTR pin of EM770W module is connected with the M_DTR3 pin of LPC3250 microcontroller;
The C_DCD pin of EM770W module is connected with the M_DCD3 pin of LPC3250 microcontroller;
The C_RI pin of EM770W module is connected with the M_RI3 pin of LPC3250 microcontroller;
The C_GND pin of EM770W module is connected with the M_GND pin of LPC3250 microcontroller;
The C_PERST_N pin of EM770W module is connected with the M_P1.1 pin of LPC3250 microcontroller;
EM770W module is connected with USIMCard's:
The C_RST pin of EM770W module is connected with the USIM_RST pin of USIM Card;
The C_IO pin of EM770W module is connected with the USIM_IO pin of USIM Card;
The C_VREG_USIM pin of EM770W module is connected with the USIM_VCC pin of USIM Card;
The C_CLK pin of EM770W module is connected with the USIM_CLK pin of USIM Card;
The C_GND pin of EM770W module is connected with the USIM_GND pin of USIMCard;
(3) watchdog circuit, as Fig. 6, effect is that the deadlock of communication link state and device is carried out from detecting and certainly recovering, improve the reliability of active-service bus taking information issuing device, comprise serial ports level conversion MAX232 chip, AT89C2051 chip, the first triode T1, the first relay J 1, the second triode T2, the second relay J 2, the three triode T3, the 3rd relay J 3, the first to the 6th resistance R 1 are to R6; Connection between the device of formation watchdog circuit:
The R1IN pin of MAX232 chip is connected with the M_TXD2 pin of LPC3250 microcontroller;
The T1OU pin of MAX232 chip is connected with the M_RXD2 pin of LPC3250 microcontroller;
The R1OU pin of MAX232 chip is connected with the A_RXD pin of AT89C2051 chip;
The T1IN pin of MAX232 chip is connected with the A_TXD pin of AT89C2051 chip;
The P1.0 pin of AT89C2051 chip is connected with the base stage b of the first triode T1 by the second resistance R 2, the emitter e of the first triode T1 is connected with the control pin J1_K of the first relay J 1, and the two ends of the normally closed switch JK1 of the first relay J 1 are connected with LPC3250 power interface with+3.3V respectively;
The P1.1 pin of AT89C2051 chip is connected with the base stage b of the second triode T2 by the 4th resistance R 4, the emitter e of the second triode T2 is connected with the control pin J2_K of the second relay J 2, and the two ends of the normally closed switch JK2 of the second relay J 1 are connected with the power interface of 3G communication module with+3.3V respectively;
The P1.2 pin of AT89C2051 chip is connected with the base stage b of the 3rd triode T3 by the 6th resistance R 6, the emitter e of the 3rd triode T3 is connected with the control pin J3_K of the 3rd relay J 3, and the two ends of the normally closed switch JK3 of the 3rd relay J 3 are connected with Wi-Fi communication module power interface with+5V respectively.
Wherein the above+3.3V and+5V power supply provides by power circuit.
Describe the watchdog circuit course of work in detail:
During the normal work of device, the P1.0 pin signal of AT89C2051 chip is low level, the first triode T1 cut-off, and the normally-closed contact adhesive of the first relay J 1, gives LPC3250 microcontroller power supply+3.3V;
When crashing appears in device, start watchdog circuit, the M_TXD2 pin of LPC3250 microcontroller is to the AT89C2051 chip dispensing device enabled instruction in watchdog circuit, when AT89C2051 chip is received after this instruction, putting AT89C2051 chip P1.0 pin is high level, the first triode T1 conducting, the normally-closed contact of the first relay J 1 disconnects, the power supply of cutting-off controlling mainboard; AT89C2051 chip timer work simultaneously, after within 3 seconds, being timed to, the P1.0 pin of automatically putting AT89C2051 chip is low level, the first triode T1 cut-off, the normally-closed contact adhesive of the first relay J 1, recover to LPC3250 microcontroller+3.3V power supply, device restarts;
When 3G communication module is normally worked, the P1.1 pin of AT89C2051 chip is low level, the second triode T2 cut-off, and the normally-closed contact JK2 adhesive of the second relay J 2, gives the power supply of 3G communication module; When certain can not normally carry out 3G communication constantly, start watchdog circuit, the M_TXD2 pin of LPC3250 microcontroller sends house dog 3G communication instruction to the AT89C2051 chip in watchdog circuit, when AT89C2051 chip is received after this instruction, putting AT89C2051 chip P1.1 pin is high level, the second triode T2 conducting, and the normally-closed contact of the second relay J 2 disconnects, thereby the power supply+3.3V that disconnects 3G communication module, 3G communication module is closed; AT89C2051 chip timer work simultaneously, after within 3 seconds, being timed to, automatically putting AT89C2051 chip P1.1 pin is low level, the second triode T2 cut-off, the normally-closed contact of the second relay J 2 (JK2) adhesive, recovers the power supply to 3G communication module.
When Wi-Fi communication module is normally worked, the P1.2 pin of AT89C2051 chip is low level, the 3rd triode T3 cut-off, and the normally-closed contact JK3 adhesive of the 3rd relay J 3, gives the power supply of Wi-Fi communication module; When certain can not normally carry out Wi-Fi communication constantly, start watchdog circuit, the M_TXD2 pin of LPC3250 microcontroller sends house dog Wi-Fi communication instruction to the AT89C2051 chip in watchdog circuit, when AT89C2051 chip is received after this instruction, putting AT89C2051 chip P1.2 pin is high level, the 3rd triode T3 conducting, and the normally-closed contact of the second relay J 3 disconnects, thereby the power supply+5V that disconnects Wi-Fi communication module, Wi-Fi communication module is closed; AT89C2051 chip timer work simultaneously, after within 3 seconds, being timed to, automatically putting AT89C2051 chip P1.2 pin is low level, the 3rd triode T3 cut-off, the normally-closed contact of the 3rd relay J 3 (JK3) adhesive, recovers the power supply to Wi-Fi communication module.
(4) network interface interface circuit, as Fig. 7, effect is the debugging that facilitates system, simultaneously for wired connection public network provides interface, comprises Ethernet chip ENC28J60 chip, the first light-emitting diode, the second light-emitting diode, integrated RJ45 socket; Connection between the device of formation network interface interface circuit:
The N_/CS pin of ENC28J60 chip is connected with the M_P1.2 pin of LPC3250 microcontroller;
The N_SCK pin of ENC28J60 chip is connected with the M_SCK pin of LPC3250 microcontroller;
The N_SI pin of ENC28J60 chip is connected with the M_SO pin of LPC3250 microcontroller;
The N_SO pin of ENC28J60 chip is connected with the input 1,2 of door 74HCT08 with the one or two input, and two inputs are connected with the door output 3 of 74HCT08 and the M_SI pin of LPC3250 microcontroller;
The N_/INT pin of ENC28J60 chip is connected with the input 4,5 of door 74HCT08 with the two or two input, and two inputs are connected with the door output 6 of 74HCT08 and the M_INTO pin of LPC3250 microcontroller;
The N_/WOL pin of ENC28J60 chip is connected with the input 9,10 of door 74HCT08 with the three or two input, and two inputs are connected with the door output 8 of 74HCT08 and the M_INT1 pin of LPC3250 microcontroller;
The N_LEDA pin of ENC28J60 chip is connected with the positive pole of the first light-emitting diode;
The N_LEDB pin of ENC28J60 chip is connected with the positive pole of the second light-emitting diode;
The minus earth of the negative pole of the first light-emitting diode and the second light-emitting diode;
The N_TPIN+ of ENC28J60 chip/-pin is connected with the TPOUT+/-pin of network interface Interface integration RJ45 socket, and the N_TPOUT+ of ENC28J60 chip/-pin is connected with the TPIN+/-pin of network interface Interface integration RJ45 socket.
The overall physical structure block diagram of active service type transit riding information issuing system, as shown in Figure 1, comprise: passenger cellphone subscriber 1, passenger cellphone subscriber 2 ..., passenger cellphone subscriber n, be positioned at bus stop 1 active-service bus taking information issuing device, be positioned at bus stop 2 active-service bus taking information issuing device ..., be positioned at active-service bus taking information issuing device and the Bus information server of bus stop n.Active-service bus taking information issuing device communicates by wireless 3G network mode and Bus information server, and adopts Wi-Fi network communication mode and passenger cellphone subscriber to communicate.
Passenger cellphone subscriber utilizes the Wi-Fi function of mobile phone to connect with active-service bus taking information issuing device, the license number of the public transportation enquiry software input target public transport of passenger cellphone subscriber on mobile phone, the real-time riding information of request active-service bus taking information issuing device issue target public transport, active-service bus taking information issuing device is received after user's request, adopt 3G communication to be connected with Bus information server, Bus information server is passed to active-service bus taking information issuing device user's target transit riding information, active-service bus taking information issuing device passes through Wi-Fi form again transit riding information, the distance that Ru Lici bus station is general, the information such as estimated time of arriving at a station are passed to cellphone subscriber.
Active-service bus taking information issuing device comprises: be positioned at bus stop 1 active-service bus taking information issuing device, be positioned at bus stop 2 active-service bus taking information issuing device ..., be positioned at the active-service bus taking information issuing device of bus stop n.Passenger cellphone subscriber comprises: passenger cellphone subscriber 1, passenger cellphone subscriber 2 ... passenger cellphone subscriber n.N is more than or equal to 1 positive integer.
Claims (1)
1. active-service bus taking information issuing device, is characterized in that, this information delivery apparatus comprises LPC3250 microcontroller, Wi-Fi communication module, 3G communication module, watchdog circuit and network interface interface circuit;
The effect of Wi-Fi communication module is that passenger utilizes the Wi-Fi of own mobile phone and the Wi-Fi communication module of active-service bus taking information issuing device are connected and communicate by letter, as long as user is the target public transport license number of input oneself, Wi-Fi communication module is target bus particular location, from station, also have how many distances, the information such as E.T.A send to passenger cellphone subscriber;
Wi-Fi communication module adopts RT3662 module to be connected with the first serial of LPC3250 microcontroller:
The W_TXD pin of RT3662 module is connected with the M_RXD1 pin of LPC3250 microcontroller;
The W_RXD pin of RT3662 module is connected with the M_TXD1 pin of LPC3250 microcontroller;
The W_RESET pin of RT3662 module is connected with the M_P1.0 pin of LPC3250 microcontroller;
The W_GND pin of RT3662 module is connected with the M_GND pin of LPC3250 microcontroller, and while ground connection;
The effect of 3G communication module is that active-service bus taking information issuing device is after receiving passenger's inquiry request, utilize 3G communication mode that solicited message is transmitted to Bus information server, Bus information server recycling 3G communication mode is passed to active-service bus taking information issuing device the real-time more specific location information of target bus, then by Wi-Fi mode, is transmitted to passenger cellphone subscriber;
3G communication module adopts EM770W module to be connected with the 3rd serial ports of LPC3250 microcontroller:
The C_RX pin of EM770W module is connected with the M_TXD3 pin of LPC3250 microcontroller;
The C_TX pin of EM770W module is connected with the M_RXD3 pin of LPC3250 microcontroller;
The C_CTS pin of EM770W module is connected with the M_RTS3 pin of LPC3250 microcontroller;
The C_RFR pin of EM770W module is connected with the M_CTS3 pin of LPC3250 microcontroller;
The C_DTR pin of EM770W module is connected with the M_DTR3 pin of LPC3250 microcontroller;
The C_DCD pin of EM770W module is connected with the M_DCD3 pin of LPC3250 microcontroller;
The C_RI pin of EM770W module is connected with the M_RI3 pin of LPC3250 microcontroller;
The C_GND pin of EM770W module is connected with the M_GND pin of LPC3250 microcontroller;
The C_PERST_N pin of EM770W module is connected with the M_P1.1 pin of LPC3250 microcontroller;
EM770W module is connected with USIM Card's:
The C_RST pin of EM770W module is connected with the USIM_RST pin of USIM Card;
The C_IO pin of EM770W module is connected with the USIM_IO pin of USIM Card;
The C_VREG_USIM pin of EM770W module is connected with the USIM_VCC pin of USIM Card;
The C_CLK pin of EM770W module is connected with the USIM_CLK pin of USIM Card;
The C_GND pin of EM770W module is connected with the USIM_GND pin of USIM Card;
The effect of watchdog circuit is that the deadlock of communication link state and device is carried out, from detecting and certainly recovering, improving the reliability of active-service bus taking information issuing device; Watchdog circuit comprises: serial ports level conversion MAX232 chip, AT89C2051 chip, the first triode (T1), the first relay (J1), the second triode (T2), the second relay (J2), the 3rd triode (T3), the 3rd relay (J3), the first to the 6th resistance (R1 to R6); Connection between the device of formation watchdog circuit:
The R1IN pin of MAX232 chip is connected with the M_TXD2 pin of LPC3250 microcontroller;
The T1OU pin of MAX232 chip is connected with the M_RXD2 pin of LPC3250 microcontroller;
The R1OU pin of MAX232 chip is connected with the A_RXD pin of AT89C2051 chip;
The T1IN pin of MAX232 chip is connected with the A_TXD pin of AT89C2051 chip;
The P1.0 pin of AT89C2051 chip is connected with the base stage (b) of the first triode (T1) by the second resistance (R2), the emitter (e) of the first triode (T1) is connected with the control pin (J1_K) of the first relay (J1), and the two ends of the normally closed switch (JK1) of the first relay (J1) are connected with LPC3250 power interface with+3.3V respectively;
The P1.1 pin of AT89C2051 chip is connected with the base stage (b) of the second triode (T2) by the 4th resistance (R4), the emitter (e) of the second triode (T2) is connected with the control pin (J2_K) of the second relay (J2), and the two ends of the normally closed switch (JK2) of the second relay (J1) are connected with the power interface of 3G communication module with+3.3V respectively;
The P1.2 pin of AT89C2051 chip is connected with the base stage (b) of the 3rd triode (T3) by the 6th resistance (R6), the emitter (e) of the 3rd triode (T3) is connected with the control pin (J3_K) of the 3rd relay (J3), and the two ends of the normally closed switch (JK3) of the 3rd relay (J3) are connected with Wi-Fi communication module power interface with+5V respectively;
The M_TXD2 pin of LPC3250 microcontroller is connected with the R1IN pin of the MAX232 chip of watchdog circuit;
The M_RXD2 pin of LPC3250 microcontroller is connected with the T1OU pin of the MAX232 chip of watchdog circuit;
The effect of described network interface interface circuit is the debugging that facilitates system, simultaneously for wired connection public network provides interface;
Described network interface interface circuit comprises: Ethernet chip ENC28J60 chip, the first light-emitting diode, the second light-emitting diode, network interface Interface integration RJ45 socket; Connection between the device of formation network interface interface circuit:
The N_/CS pin of ENC28J60 chip is connected with the M_P1.2 pin of LPC3250 microcontroller;
The N_SCK pin of ENC28J60 chip is connected with the M_SCK pin of LPC3250 microcontroller;
The N_SI pin of ENC28J60 chip is connected with the M_SO pin of LPC3250 microcontroller;
The N_SO pin of ENC28J60 chip is connected with the input (1,2) of door 74HCT08 with the one or two input, and two inputs are connected with the M_SI pin of LPC3250 microcontroller with the output (3) of door 74HCT08;
The N_/INT pin of ENC28J60 chip is connected with the input (4,5) of door 74HCT08 with the two or two input, and two inputs are connected with the M_INT0 pin of LPC3250 microcontroller with the output (6) of door 74HCT08;
The N_/WOL pin of ENC28J60 chip is connected with the input (9,10) of door 74HCT08 with the three or two input, and two inputs are connected with the M_INT1 pin of LPC3250 microcontroller with the output (8) of door 74HCT08;
The N_LEDA pin of ENC28J60 chip is connected with the positive pole of the first light-emitting diode;
The N_LEDB pin of ENC28J60 chip is connected with the positive pole of the second light-emitting diode;
The minus earth of the negative pole of the first light-emitting diode and the second light-emitting diode;
The N_TPIN+ of ENC28J60 chip/-pin is connected with the TPOUT+/-pin of network interface Interface integration RJ45 socket, and the N_TPOUT+ of ENC28J60 chip/-pin is connected with the TPIN+/-pin of network interface Interface integration RJ45 socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210001282.8A CN102546975B (en) | 2012-01-04 | 2012-01-04 | Active-service bus taking information issuing device |
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| CN201210001282.8A CN102546975B (en) | 2012-01-04 | 2012-01-04 | Active-service bus taking information issuing device |
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| CN102546975A CN102546975A (en) | 2012-07-04 |
| CN102546975B true CN102546975B (en) | 2014-04-30 |
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| CN108903296A (en) * | 2018-09-20 | 2018-11-30 | 张芷瑞 | A kind of family's home grown product take-away system based on movable dining car |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2847420Y (en) * | 2005-10-26 | 2006-12-13 | 张美娜 | Electronic station board |
| CN201437348U (en) * | 2009-05-22 | 2010-04-14 | 触动多媒体技术（上海）有限公司 | Vehicle multimedia interaction equipment |
| CN101853559A (en) * | 2010-06-22 | 2010-10-06 | 南昌市恒鑫电子技术有限公司 | 3G whole-process compound wireless intelligent mobile video monitoring alarm |
| CN101890923A (en) * | 2009-05-22 | 2010-11-24 | 触动多媒体技术（上海）有限公司 | Vehicle-mounted multimedia advertisement recreational interactive equipment system |
| CN201927175U (en) * | 2011-01-05 | 2011-08-10 | 中国科学院深圳先进技术研究院 | Information collector of intelligent transportation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2847420Y (en) * | 2005-10-26 | 2006-12-13 | 张美娜 | Electronic station board |
| CN201437348U (en) * | 2009-05-22 | 2010-04-14 | 触动多媒体技术（上海）有限公司 | Vehicle multimedia interaction equipment |
| CN101890923A (en) * | 2009-05-22 | 2010-11-24 | 触动多媒体技术（上海）有限公司 | Vehicle-mounted multimedia advertisement recreational interactive equipment system |
| CN101853559A (en) * | 2010-06-22 | 2010-10-06 | 南昌市恒鑫电子技术有限公司 | 3G whole-process compound wireless intelligent mobile video monitoring alarm |
| CN201927175U (en) * | 2011-01-05 | 2011-08-10 | 中国科学院深圳先进技术研究院 | Information collector of intelligent transportation system |
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