CN102020148B - Dot matrix elevator display device with network interface and control method thereof - Google Patents
Dot matrix elevator display device with network interface and control method thereof Download PDFInfo
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Abstract
The invention provides a dot matrix elevator display device with a network interface, which comprises a variable voltage stabilizing circuit, a CAN interface circuit, a CAN drive circuit, a micro control circuit, a dot matrix display circuit and a voice prompt circuit. The device simplifies the wiring, enables the circuit board wiring to be simpler, is capable of dynamically displaying up-down information of an elevator, can prompt successful registration in a voice mode, and is additionally provided with the CAN network interface so that the display device can be accessed in a monitoring system of the whole elevator. The invention also provides a control method of the dot matrix elevator display device with a network interface, which utilizes the CAN network interface to enable the display device to be accessed in the monitoring system of the whole elevator, and transmits the floor variation data to a micro control chip through a CAN controller; and the micro control chip controls the dot matrix display circuit to display the floor information in a rolling mode based on line signals and column signals, and the display effect is vivid.
Description
Technical field
The present invention relates to a kind of elevator floor read out instrument and control method thereof, relate in particular to a kind of dot matrix elevator display apparatus and control method thereof with network interface.
Background technology
Traditional elevator floor read out instrument is a light source with the filament lamp, is carved with the Arabic number or the Roman number of hollow out on the display panel surface, representes the floor that elevator arrives through lighting of optional network specific digit.Such method shows slow, and light source is fragile, and wiring is many, and the display panel volume is big, needing to be not suitable for the express elevator and the many high rise elevators of floor of demonstration fast.
Along with the development of LED (light emitting diode light-emitting diode), to have a required voltage little because of LED, is swift in response, and the characteristics of safety durable are that the elevator display apparatus of light source is that the elevator display apparatus of light source replaces by LED gradually with the filament lamp.
It is light source with LED that Chinese patent ZL02265795.2 discloses a kind of, the seven segment code read out instrument of point-to-point parallel control.Seven segment code shows it is the instantaneous conversion demonstration of fixed position, lacks dynamic effect, and display effect is stiff; The parallel control wiring is complicated, poor anti jamming capability, and wiring was various when floor was higher; Complicated so the making sheet area is bigger because of wiring, and trouble-shooting is used duration when being out of order.
The development of CAN (controller area network controller local area network) technology makes modern electrical control system integration simpler.The floor display of current elevator industry is many directly to link to each other with supervisory keyboard, lacks the network interface that is linked into whole elevator monitoring system, and electric integrated degree is low.
Summary of the invention
In order to overcome the defective that exists in the above-mentioned prior art; First purpose of the present invention provides a kind of dot matrix elevator display apparatus with network interface; This device has been simplified wiring, makes circuit board wiring simpler, and can dynamically show the information of going downstairs on the elevator; The prompting of can pronouncing register successfully, and increase CAN network interface goes so that read out instrument inserts in the monitored control system of whole elevator.
In order to overcome the defective that exists in the above-mentioned prior art; Second purpose of the present invention provides a kind of control method of the dot matrix elevator display apparatus with network interface; This method utilizes the CAN network interface read out instrument to be inserted in the monitored control system of whole elevator; Through the CAN controller floor delta data is sent to microcontroller chip, microcontroller chip control dot matrix display circuit is according to row signal and column signal roll display floor information, and display effect is active.
For achieving the above object; According to a first aspect of the invention; The present invention provides a kind of dot matrix elevator display apparatus with network interface, comprises transformation mu balanced circuit, CAN interface circuit, CAN driving circuit, micro-control circuit, dot matrix display circuit and auditory tone cues electric circuit, wherein; Transformation mu balanced circuit input end connects extraneous direct supply, and this transformation circuit output end of pressure-stabilizing is that entire circuit provides the burning voltage that is fit to IC chip work; Said CAN interface circuit is connected with the CAN driving circuit is two-way, the antijamming capability that is used to connect the CAN physical bus and strengthens the CAN signal; Said CAN driving circuit is connected with the micro-control circuit is two-way, is used for the mutual conversion between the parallel data of serial data and micro-control circuit of CAN bus; Said micro-control circuit output end is connected with dot matrix display circuit input end through bus; The micro-control circuit output end also links to each other with the auditory tone cues electric circuit input end; Be used to control entire circuit work; And the signal that transmits according to the CAN driving circuit, send shows signal and to the auditory tone cues electric circuit signal of sounding to the dot matrix display circuit; Said dot matrix display circuit is used for the shows signal that transmits according to the micro-control circuit, roll display elevator information; Said auditory tone cues electric circuit is used to send the successful prompting sound of registration.
For achieving the above object, according to a second aspect of the invention, the present invention also provides a kind of control method of the dot matrix elevator display apparatus with network interface, and it may further comprise the steps:
S701: quantitative data input step: when the elevator floor position changed, the CAN message that the CAN network will include the floor change information sent to the CAN interface circuit, and the CAN interface circuit sends to the high-speed CAN transceiver with the CAN message through after the anti-interference process;
S702: Data Format Transform step: after the high-speed CAN transceiver matees the data rate of the data rate of CAN bus and CAN controller, the CAN message of serial is sent to the CAN controller; The CAN controller sends to microcontroller chip with parallel floor delta data after the CAN message of serial is converted into parallel floor delta data;
S703: data processing step: after microcontroller chip receives parallel floor delta data; Handle through plug-in; The shows signal that comprises capable signal and column signal is accordingly sent to the dot matrix display circuit in position according to floor, if there is floor registration information of successful then to send aud. snl. to auditory tone cues electric circuit simultaneously;
S704: show step outward: the dot matrix display circuit confirms that according to row signal and column signal the arrow and the floor that show are digital, utilizes the capable signal control arrow of change and the scroll-up/down of floor numeral, accomplishes the function of roll display floor information; Auditory tone cues electric circuit is sounded according to aud. snl., accomplishes the successful function of prompting floor registration.
Beneficial effect of the present invention is: read out instrument of the present invention has increased network interface, goes so that read out instrument inserts in the monitored control system of whole elevator, has improved electric integrated degree; Simplified wiring, made circuit board wiring simple, thereby row's barrier rapidly.Control method of the present invention sends to microcontroller chip through the CAN controller with the floor delta data, and microcontroller chip control dot matrix display circuit is according to row signal and column signal roll display floor information, and display effect is active.
Description of drawings
Fig. 1 is the structural relation figure of the dot matrix elevator display apparatus of band network interface;
Fig. 2 is the transformation mu balanced circuit electrical schematic diagram of the dot matrix elevator display apparatus of band network interface;
Fig. 3 is the CAN interface circuit electrical schematic diagram of the dot matrix elevator display apparatus of band network interface;
Fig. 4 is the CAN driving circuit and the micro-control circuit electrical schematic diagram of the dot matrix elevator display apparatus of band network interface;
Fig. 5 is the dot matrix display circuit electrical schematic diagram of the dot matrix elevator display apparatus of band network interface;
Fig. 6 is the auditory tone cues electric circuit electrical schematic diagram of the dot matrix elevator display apparatus of band network interface;
Fig. 7 is the logical flow chart of the dot matrix elevator display apparatus control method of band network interface.
Specific embodiment
Further specify the present invention below in conjunction with accompanying drawing and embodiment:
As shown in Figure 1:
A kind of dot matrix elevator display apparatus with network interface is made up of transformation mu balanced circuit 101, CAN interface circuit 102, CAN driving circuit 103, micro-control circuit 104, dot matrix display circuit 105, auditory tone cues electric circuit 106.These transformation mu balanced circuit 101 mouths are that entire circuit provides the burning voltage that is fit to IC chip work; The antijamming capability that CAN interface circuit 102 is used to connect the CAN physical bus and strengthens the CAN signal; CAN driving circuit 103 is used for the mutual conversion between the parallel data of serial data and micro-control circuit of CAN bus; Micro-control circuit 104 is used to control entire circuit work, and the signal that transmits according to CAN driving circuit 103, sends shows signal and to auditory tone cues electric circuit 106 signal of sounding to dot matrix display circuit 105; This dot matrix display circuit 105 is used for the shows signal that transmits according to micro-control circuit 104, roll display elevator information; This auditory tone cues electric circuit 106 is used to send the successful prompting sound of registration.
As shown in Figure 2:
Transformation mu balanced circuit 101 is that the lowering and stabilizing blood pressure chip U1 of LM2574M forms by model mainly; Peripheral circuit connects according to the above the known method that connects of chip handbook; Lowering and stabilizing blood pressure chip U1 input end IN connects extraneous 24V direct supply, and lowering and stabilizing blood pressure chip U1 mouth OUT is connected with feedback end FB.
After lowering and stabilizing blood pressure chip U1 carries out step-down and voltage stabilizing process with the 24V vdc process in the external world, be fit to the 5V operating voltage of entire circuit chip operation in mouth OUT output.
As shown in Figure 3:
CAN interface circuit 102 mainly is made up of the first interface J1.The power end DC24V of the first interface J1 connects the 24V direct supply; Ground terminal GND ground connection; Ground terminal GND also connects the first schottky diode D1 anode, the second Zener diode D2 anode and the 3rd Zener diode D3 anode simultaneously; This first schottky diode D1 negative electrode power connection end, this second Zener diode D2 negative electrode connects the common port of second inductance L 2 and the 4th resistance R 4, and the 3rd Zener diode D3 negative electrode connects the common port of the 3rd inductance L 3 and the 5th resistance R 5; The low level CAN physical bus interface end of the first interface J1 is connected and is met low level CAN bus end CANL after second inductance L 2 and the 4th resistance R 4, and the high level CAN physical bus interface end of the first interface J1 is connected and met high level CAN bus end CANH after the 3rd inductance L 3 and the 5th resistance R 5; This low level CAN bus end CANL connects the 8th capacitor C 8 one ends; The 8th capacitor C 8 other ends connect high level CAN bus end CANH; Low level CAN bus end CANL receives high level CAN bus end CANH after also being connected in series first resistance R 1, second resistance R 2 and the 3rd switch S 3 successively, and first resistance R 1 is connected in series first capacitor C, 1 back ground connection with the common port of second resistance R 2.
The extraneous CAN physical bus of CAN interface circuit 102 two-way connections receives or transmitting serial data suffered interference when the circuit that electric capacity, diode and resistance are formed in the CAN interface circuit 102 is used to reduce CAN bus transfer signal.
As shown in Figure 4:
CAN driving circuit 103 mainly comprises the controller U4 and the second transceiver U6; The model of this controller U4 is: SJA1000; The model of this second transceiver U6 is: TJA1040.
This controller U4 address enable end ALE connects the address enable end ALE of the microcontroller chip U3 of micro-control circuit 104; The sheet choosing end CS of controller U4 connects the 4th P2 pin P23 of microcontroller chip U3; RD is held in the control of reading of reading Enable Pin RDE connection microcontroller chip U3 of controller U4, and WR is held in the control of writing of writing control end WR connection microcontroller chip U3 of controller U4; The high level CAN bus end CANH of the second transceiver U6 links to each other with the high level CAN bus end CANH of CAN interface circuit 102; The low level CAN bus end CANL of the second transceiver U6 links to each other with the low level CAN bus end CANL of CAN interface circuit 102; The reference voltage end VERF of the second transceiver U6 connects second of microcontroller chip U3 and receives data input pin RX1; The reception data output end RXD of the second transceiver U6 connects first of microcontroller chip U3 and receives data input pin RX0, and the transmission data input pin TXD of the second transceiver U6 connects the transmission data output end TXD of microcontroller chip U3.
The second transceiver U6 matees the data transmission rate of CAN physical bus and the data sink speed of controller U4, prevents that data from overflowing.Controller U4 will convert the parallel data of the microcontroller chip U3 that can output to micro-control circuit 104 from the serial data that the second transceiver U6 receives into.
This first transceiver U5 drives input end DI and connects microcontroller chip U3 serial output terminal TXD, and the first transceiver U5 receives mouth RO and connects microcontroller chip U3 serial input terminal RXD; The reset output terminal RES of watchdog chip U2 connects the reset terminal RESET of microcontroller chip U3; The sheet choosing end CS of watchdog chip U2 connects the 2nd P1 pin P11 of microcontroller chip U3; The serial input terminal SI of watchdog chip U2 connects the P1 pin P10 of microcontroller chip U3; The serial output terminal SO of watchdog chip U2 connects the 4th P1 pin P13 of microcontroller chip U3, and the sequential end SCK of watchdog chip U2 connects the 3rd P1 pin P12 of microcontroller chip U3; The eight bit multiplex input ends of microcontroller chip U3 connect the controller U4 eight bit multiplex output terminals A D0-AD7 of CAN driving circuit 103; Microcontroller chip U3 first in broken ends of fractured bone INT0 connect the middle broken ends of fractured bone INT of the controller U4 of CAN driving circuit 103; Microcontroller chip U3 second in broken ends of fractured bone INT1 connect the reset terminal RST of the controller U4 of CAN driving circuit 103, the 5th P2 pin P24 of microcontroller chip U3, the 6th P2 pin P25, the 7th P2 pin P26 link to each other with the first latch U7 sequential end pin 11, register U8 sequential end pin 11, the second latch U13 sequential end pin 11 respectively successively.
The sequential termination SCK of watchdog chip U2 receives the clock signal from microcontroller chip U3; When microcontroller chip U3 crashes no longer the transmission timing signal because of external interference; The built-in counting machine of watchdog chip U2 overflows because of not being eliminated; Be built-in with the watchdog chip U2 reset output terminal RES that overflows binary pair and give microcontroller chip U3 output reset signal, microcontroller chip U3 is reworked.Watchdog chip U2 used in the present embodiment also is built-in with Electrically Erasable Read Only Memory, can be used as the external memory of microcontroller chip U3.The first transceiver U5 is used for carrying out communication with subsequent use RS482/RS422 bus.Microcontroller chip U3 is used to determine the mode of operation of the controller U4 of CAN driving circuit 103, the work of control auditory tone cues electric circuit 105, and the work of control dot matrix display circuit 105.
As shown in Figure 5:
This dot matrix display circuit 105 mainly comprises a LED dot matrix M1, the 2nd LED dot matrix M2, the first latch U7, the second latch U13 and register U8; The one LED dot matrix M1 model is: TOP-1457BH-B; The 2nd LED dot matrix M2 model is: TOP-14117BH-B; The model of the first latch U7 and the second latch U13 is: TPIC6B273; The model of register U8 is: ACT574.
The eight bit multiplex input ends of the eight bit multiplex input ends of this first latch U7, this second latch U13, the seven bit multiplex input ends of this register U8 link to each other with bus simultaneously; The pin 4 of this first latch U7, pin 5, pin 6 link to each other with the third line control line R3, the second row control line R2, the first row control line R1 of the 2nd LED dot matrix M2 respectively successively, and the pin 7 of this first latch U7, pin 14, pin 15, pin 16, pin 17 link to each other with fifth line control line R5, fourth line control line R4, the third line control line R3, the second row control line R2, the first row control line R1 of a LED dot matrix M1 respectively successively; Eight mouths of this second latch U13 link to each other with the tenth control line R11 of delegation, the tenth row control line R10, the 9th row control line R9, the 8th row control line R8, the 7th row control line R7, the 6th row control line R6, fifth line control line R5, the fourth line control line R4 of the 2nd LED dot matrix M2 respectively successively; Link to each other with seven capable control lines of a LED dot matrix M1 respectively successively after seven mouth series resistances of this register U8, also link to each other with seven capable control lines of the 2nd LED dot matrix M2 respectively successively after seven mouth series resistances of this register U8.
Utilize the register U8 input in time characteristic of output in time, the capable control line of register U8 mouth with a LED dot matrix M1, the 2nd LED dot matrix M2 linked to each other, some matrix LED display circuit can in time show the effect of image scroll-up/down.Utilize latch to obtain the characteristics that latch signal just can write new data; With the mouth of the first latch U7, the second latch U13 by above-mentioned connect method and the row control line of a LED dot matrix M1, the 2nd LED dot matrix M2 be connected after; Point matrix LED read out instrument can confirm specifically to want images displayed through Cartesian coordinates after receiving capable shows signal and row shows signal, thereby and makes border, the images displayed left and right sides confirm can not occur the situation of image double swerve.
As shown in Figure 6:
This auditory tone cues electric circuit 105 mainly comprises darlington array U12, the first optocoupler U9, the second optocoupler U10, the 3rd optocoupler U11 and buzzer phone B1; The model of this darlington array U12 is: UNL2003; The model of this first optocoupler U9, the second optocoupler U10, the 3rd optocoupler U11 is: P521.
The first input end IN1 of this darlington array U12, the second input end IN2, the 3rd input end IN3, four-input terminal IN4, the 5th input end IN5 be non-the 7th P1 pin P16, the 6th P1 pin P15, the 3rd P2 pin P22, the 8th P2 pin P27, the 5th P1 pin P14 that is connected to microcontroller chip U3 on the micro-control circuit 104 behind the door of differential concatenation respectively successively; Connect the 3rd wire jumper JP3 input end XD after the first mouth OUT1 series limiting resistor of this darlington array U12; Connect the second wire jumper JP2 after the second mouth OUT2 series limiting resistor of this darlington array U12; Connect the 7th light-emitting diode D7 anode after the 3rd mouth OUT3 series limiting resistor of this darlington array U12; The 7th light-emitting diode negative ground; Connect the 8th light-emitting diode D8 anode after the 4th mouth OUT4 series limiting resistor of this darlington array U12; The 8th light-emitting diode negative ground; Connect buzzer phone B1 one end after the 5th mouth OUT5 series limiting resistor of this darlington array U12, this buzzer phone B1 other end connects extraneous direct supply;
Connect extraneous direct supply behind the anode tap serial connection current-limiting resistance of the former limit of this first optocoupler U9; Connect the first wire jumper JP1 mouth ST behind the cathode terminal serial connection current-limiting resistance of the former limit of the first optocoupler U9; Be parallel with a current-limiting resistance and an electric capacity between this first optocoupler U9 former limit anode tap and the cathode terminal simultaneously; This first optocoupler U9 secondary collector terminal connects the P2 pin P20 of the microcontroller chip U3 of micro-control circuit 104; Power connection was anodal after this first optocoupler U9 secondary collector terminal also was connected in series current-limiting resistance, this first optocoupler U9 secondary emitter-base bandgap grading end ground connection; Connect extraneous direct supply behind the anode tap serial connection current-limiting resistance of the former limit of this second optocoupler U10; Connect the second wire jumper JP2 mouth SA behind the cathode terminal serial connection current-limiting resistance of the former limit of the second optocoupler U10; Be parallel with a current-limiting resistance and an electric capacity between this second optocoupler U10 former limit anode tap and the cathode terminal simultaneously; This second optocoupler U10 secondary collector terminal connects the 2nd P2 pin P21 of the microcontroller chip U3 of micro-control circuit 104; Power connection was anodal after this second optocoupler U10 secondary collector terminal also was connected in series current-limiting resistance, this second optocoupler U10 secondary emitter-base bandgap grading end ground connection; Connect extraneous direct supply behind the anode tap serial connection current-limiting resistance of the former limit of the 3rd optocoupler U11; Connect the 3rd wire jumper JP1 mouth XA behind the cathode terminal serial connection current-limiting resistance of the former limit of the 3rd optocoupler U11; Be parallel with a current-limiting resistance and an electric capacity between the 3rd optocoupler U11 former limit anode tap and the cathode terminal simultaneously; The 3rd optocoupler U11 secondary collector terminal connects the 8th P1 pin P17 of the microcontroller chip U3 of micro-control circuit 104; Power connection was anodal after the 3rd optocoupler U11 secondary collector terminal also was connected in series current-limiting resistance, the 3rd optocoupler U11 secondary emitter-base bandgap grading end ground connection.
When circuit obtains registering successful signal; The microcontroller chip U3 of micro-control circuit 104 is to the darlington array U12 signal of sounding; Darlington array U12 amplifies this aud. snl., outputs to buzzer phone B1, and buzzer phone B1 sounding is accomplished the function of auditory tone cues.Light-emitting diode is used to show the mode of operation of auditory tone cues electric circuit 105.The first optocoupler U9, the second optocoupler U10, the 3rd optocoupler U11 are used for the electrical isolation of the feedback signal of darlington array U12, increase the antijamming capability of signal.
As shown in Figure 7:
A kind of control method of the dot matrix elevator display apparatus with network interface, form by following steps:
S701: quantitative data input step: when the elevator floor position changed, the CAN message that the CAN network will include the floor change information sent to the CAN interface circuit, and the CAN interface circuit sends to the high-speed CAN transceiver with the CAN message through after the anti-interference process;
S702: Data Format Transform step: after the high-speed CAN transceiver matees the data rate of the data rate of CAN bus and CAN controller, the CAN message of serial is sent to the CAN controller; The CAN controller sends to microcontroller chip with parallel floor delta data after the CAN message of serial is converted into parallel floor delta data;
S703: data processing step: after microcontroller chip receives parallel floor delta data; Handle through plug-in; The shows signal that comprises capable signal and column signal is accordingly sent to the dot matrix display circuit in position according to floor, if there is floor registration information of successful then to send aud. snl. to auditory tone cues electric circuit simultaneously;
S704: show step outward: the dot matrix display circuit confirms that according to row signal and column signal the arrow and the floor that show are digital, utilizes the capable signal control arrow of change and the scroll-up/down of floor numeral, accomplishes the function of roll display floor information; Auditory tone cues electric circuit is sounded according to aud. snl., accomplishes the successful function of prompting floor registration.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (6)
1. dot matrix elevator display apparatus with network interface; Comprise transformation mu balanced circuit (101), CAN interface circuit (102), CAN driving circuit (103), micro-control circuit (104), dot matrix display circuit (105) and auditory tone cues electric circuit (106), it is characterized in that:
Said transformation mu balanced circuit (101) input end connects extraneous direct supply, and this transformation mu balanced circuit (101) mouth is that entire circuit provides the burning voltage that is fit to IC chip work;
Said CAN interface circuit (102) and two-way connection of CAN driving circuit (103), the antijamming capability that is used to connect the CAN physical bus and strengthens the CAN signal;
Said CAN driving circuit (103) and two-way connection of micro-control circuit (104) are used for the mutual conversion between the parallel data of serial data and micro-control circuit (104) of CAN bus;
Said micro-control circuit (104) mouth links to each other with dot matrix display circuit (105) input end; Micro-control circuit (104) mouth also links to each other with auditory tone cues electric circuit (106) input end; Be used to control entire circuit work; And the signal that transmits according to CAN driving circuit (103), send shows signal and to auditory tone cues electric circuit (106) signal of sounding to dot matrix display circuit (105);
Said dot matrix display circuit (105) is used for the shows signal that transmits according to the micro-control circuit; Roll display elevator information, said dot matrix display circuit (105) comprise a LED dot matrix (M1), the 2nd LED dot matrix (M2), first latch (U7), second latch (U13) and register (U8); Seven bit multiplex input ends of eight bit multiplex input ends of said first latch (U7), eight bit multiplex input ends of said second latch (U13), said register (U8) link to each other with bus simultaneously; The pin 4 of said first latch (U7), pin 5, pin 6 link to each other with the third line control line R3, the second row control line R2, the first row control line R1 of the 2nd LED dot matrix (M2) respectively successively, and the pin 7 of said first latch (U7), pin 14, pin 15, pin 16, pin 17 link to each other with fifth line control line R5, fourth line control line R4, the third line control line R3, the second row control line R2, the first row control line R1 of a said LED dot matrix (M1) respectively successively; Eight mouths of said second latch (U13) link to each other with the tenth control line R11 of delegation, the tenth row control line R10, the 9th row control line R9, the 8th row control line R8, the 7th row control line R7, the 6th row control line R6, fifth line control line R5, the fourth line control line R4 of the 2nd LED dot matrix (M2) respectively successively; Link to each other with seven capable control lines of a LED dot matrix (M1) respectively successively after seven mouth series resistances of said register (U8), also link to each other with seven capable control lines of the 2nd LED dot matrix (M2) respectively successively after seven mouth series resistances of said register (U8);
Said auditory tone cues electric circuit (106) is used to send the successful prompting sound of registration.
2. the dot matrix elevator display apparatus of band network interface according to claim 1 is characterized in that:
Said micro-control circuit (104) comprises that mainly model is that first transceiver (U5) of MAX1487, watchdog chip (U2) that model is X5045 and model are 8031 microcontroller chip (U3).
3. the dot matrix elevator display apparatus of band network interface according to claim 1 is characterized in that:
Said CAN driving circuit (103) comprises that mainly model is that controller (U4) and the model of SJA1000 is second transceiver (U6) of TJA1040.
4. the dot matrix elevator display apparatus of band network interface according to claim 1 is characterized in that:
Said auditory tone cues electric circuit (106) comprises darlington array (U12), first optocoupler (U9), second optocoupler (U10), the 3rd optocoupler (U11) and buzzer phone (B1).
5. the dot matrix elevator display apparatus of band network interface according to claim 1 is characterized in that:
Said transformation mu balanced circuit (101) comprises that mainly model is the lowering and stabilizing blood pressure chip (U1) of LM2574M.
6. the control method of the dot matrix elevator display apparatus of the described band network interface of claim 1, it is levied and is: mainly may further comprise the steps:
S701: quantitative data input step: when the elevator floor position changed, the CAN message that the CAN network will include the floor change information sent to the CAN interface circuit, and the CAN interface circuit sends to the high-speed CAN transceiver with the CAN message through after the anti-interference process;
S702: Data Format Transform step: after the high-speed CAN transceiver matees the data rate of the data rate of CAN bus and CAN controller, the CAN message of serial is sent to the CAN controller; The CAN controller sends to microcontroller chip with parallel floor delta data after the CAN message of serial is converted into parallel floor delta data;
S703: data processing step: after microcontroller chip receives parallel floor delta data; Handle through plug-in; The shows signal that comprises capable signal and column signal is accordingly sent to the dot matrix display circuit in position according to floor, if there is floor registration information of successful then to send aud. snl. to auditory tone cues electric circuit simultaneously;
S704: show step outward: the dot matrix display circuit confirms that according to row signal and column signal the arrow and the floor that show are digital, utilizes the capable signal control arrow of change and the scroll-up/down of floor numeral, accomplishes the function of roll display floor information; Auditory tone cues electric circuit is sounded according to aud. snl., accomplishes the successful function of prompting floor registration.
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| CN1562720A (en) * | 2004-03-22 | 2005-01-12 | 武汉理工大学 | Intelligent method and device for controlling elevator based on distributed multipath CAN bus |
| CN101531321A (en) * | 2008-03-13 | 2009-09-16 | 上海爱登堡电梯有限公司 | Escalator provided with man-machine conversation display interface terminal |
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|---|---|---|---|---|
| CN1562720A (en) * | 2004-03-22 | 2005-01-12 | 武汉理工大学 | Intelligent method and device for controlling elevator based on distributed multipath CAN bus |
| CN101531321A (en) * | 2008-03-13 | 2009-09-16 | 上海爱登堡电梯有限公司 | Escalator provided with man-machine conversation display interface terminal |
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| 谢兵.《CAN总线控制器接口电路的设计》.《机械与电子》.2010,(第23期), * |
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