CN115240577A - Digital display device and method on nixie tube based on single-wire communication - Google Patents

Digital display device and method on nixie tube based on single-wire communication Download PDF

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CN115240577A
CN115240577A CN202210694705.2A CN202210694705A CN115240577A CN 115240577 A CN115240577 A CN 115240577A CN 202210694705 A CN202210694705 A CN 202210694705A CN 115240577 A CN115240577 A CN 115240577A
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display
digital
data
tube
code
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郑钢用
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Zhejiang Feng Hua Chuang Xin Microelectronics Co ltd
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Zhejiang Feng Hua Chuang Xin Microelectronics Co ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
    • G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
    • G09G3/14—Semiconductor devices, e.g. diodes

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The application relates to a digital display device and method on a nixie tube based on single-wire communication, relating to the technical field of nixie tube driving chips. The device comprises a main controller, a display Micro Control Unit (MCU) and a four-digit digital tube; and 7 digital pipe section signal ports of the display MCU are respectively in communication connection with 7 digital pipe section signal ports of the four-digit digital pipe. The MCU is arranged between the main controller and the four-digit digital tube, so that the main controller can realize communication connection with the MCU and send signals only by leading out a single data line, and then the signals are processed and forwarded by the MCU, received and processed by the four-digit digital tube, and digital display is realized. In the process of controlling the nixie tube to carry out digital display, only a single communication line of the main controller is occupied, and the problem that pin positions are limited when the nixie tube is connected with the driving chip is solved.

Description

Digital display device and method on nixie tube based on single-wire communication
Technical Field
The application relates to the technical field of nixie tube driving chips, in particular to a digital display device and method on a nixie tube based on single-wire communication.
Background
The nixie tube is an electronic device capable of displaying numbers and other information, and the nixie tube can display the numbers in a mode of emitting light in the tube according to a received control signal. The nixies can be classified into common anode nixies and common cathode nixies according to their wiring forms.
Corresponding to the common cathode nixie tube, various types of control chips exist in the related technology, and can control digital display in the nixie tube. In one example, the driver chip is a 74HC595, which transmits signals to a plurality of nixie tubes at a certain timing by using a multi-line communication method, so that the nixie tubes display corresponding data at one time.
However, in the nixie tube driving chip of the multi-line communication mode applied in the related art, a working error is generated due to a control signal with low time sequence quality in an actual use process, and in some application scenarios where pin positions are limited, the problem of insufficient connection pin positions exists, which affects the use of the nixie tube.
Disclosure of Invention
The application relates to a digital display device and method on a nixie tube based on single-wire communication, which can solve the problem that pin positions are limited when the nixie tube is connected with a driving chip, and the technical scheme is as follows:
in one aspect, a digital display device on a nixie tube based on single-wire communication is provided, the device comprises a main controller, a display micro-controller Unit (MCU) and a four-digit nixie tube;
the four-digit digital tube comprises four digital display modules, 7 digital tube section signal ports and 4 digital ports, wherein each digital display module in the four digital display modules comprises 7 digital tube sections;
the transmitting data port of the main controller is in communication connection with the receiving data port of the display MCU;
the four digital signal output ports of the display MCU are respectively in communication connection with the 4 digital ports of the four-bit digital tube, and the 7 digital tube section signal ports of the display MCU are respectively in communication connection with the 7 digital tube section signal ports of the four-bit digital tube.
In another aspect, a method for displaying numbers on a nixie tube based on single-line communication is provided, and the method is applied to a digital display device on a nixie tube based on single-line communication, and includes:
the main controller generates a control signal, and the control signal is used for indicating the digital display form and the display position of the four-bit digital code tube;
the main controller sends a control signal to the display MCU;
the display MCU receives the control signal;
the display MCU decodes the control signal to obtain a code tube control signal and a digital display module selection signal, wherein the code tube control signal comprises a code tube identifier, and the digital display module selection signal comprises a digital identifier;
the display MCU determines a target pipe section signal port corresponding to the code pipe identification and a target digital port corresponding to the digital display module selection signal;
the display MCU sends a code pipe control signal to the four-digit digital pipe through the target pipe section signal port and sends a digital display module selection signal to the four-digit digital pipe through the target digit port;
the four-digit digital tube receives the control signal of the code tube and the selection signal of the digital display module;
the four-digit digital tube displays data based on the control signal of the code tube and the selection signal of the digital display module.
The beneficial effect that technical scheme that this application provided brought includes at least:
the MCU is arranged between the main controller and the four-digit digital tube, so that the main controller can realize communication connection with the MCU and send signals only by leading out a single data line, and then the signals are processed and forwarded by the MCU, received and processed by the four-digit digital tube, and digital display is realized. In the process of controlling the nixie tube to carry out digital display, only a single communication line of the main controller is occupied, and the problem that pin positions are limited when the nixie tube is connected with the driving chip is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a block diagram of a digital display device on a nixie tube based on single-wire communication according to an exemplary embodiment of the present application.
Fig. 2 shows a schematic wiring diagram of a digital display device on a nixie tube based on single-wire communication according to an exemplary embodiment of the present application.
Fig. 3 is a flowchart illustrating a method for displaying numbers on a nixie tube based on single-wire communication according to an exemplary embodiment of the present application.
Fig. 4 is a flowchart illustrating a method for displaying numbers on a nixie tube based on single-wire communication according to an exemplary embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 shows a block diagram of a digital display device on a nixie tube based on single-wire communication according to an exemplary embodiment of the present application. Referring to fig. 1, the display apparatus includes a main controller 110, a display MCU120, and a four-digit digital tube 130;
the four-digit digital pipe 130 comprises four digital display modules 131, 7 digital pipe section signal ports 132 and 4 digital ports 133, and each digital display module in the four digital display modules 131 comprises 7 digital pipe sections 1311; the transmitting data port of the main controller is in communication connection with the receiving data port of the display MCU; the four digital signal output ports of the display MCU are respectively in communication connection with the 4 digital ports of the four-bit digital tube, and the 7 digital tube section signal ports of the display MCU are respectively in communication connection with the 7 digital tube section signal ports of the four-bit digital tube.
In the present application, please refer to fig. 2, which provides a connection manner of the main controller, the display MCU and the four-digit digital tube in an exemplary manner. Referring to fig. 2, the apparatus includes a main controller 210, a display MCU220, and a four-bit digital code tube 230. The main controller 210 has a main controller power port 211, a main controller ground port 212, a first non-triggered port 213, a second non-triggered port 214, a third non-triggered port 215, a fourth non-triggered port 216, a digital-to-analog conversion port 217, and a data transmission port 218. The power port 211 is communicatively coupled to a power supply 240 and the ground port 212 is communicatively coupled to a ground 250. The first, second, third and fourth unfired ports 213, 214, 215, 216 and 217 are not connected to other devices. As shown in FIG. 2, the display MCU includes a display MCU power port 221, a display MCU ground port 222, a digital pipe signal port 223, a digital pipe signal port 224, a digital pipe signal port 225, a digital pipe signal port 226, a digital pipe signal port 227, a digital pipe signal port 228, and a digital pipe signal port 229, which total 7 digital pipe signal ports, a digital port 2210, a digital port 2211, a digital port 2212, a digital port 2213, which total 4 digital ports, and a data receiving port 2214. The communication connection between the data transmitting port 218 and the data receiving port 2214 realizes the connection between the display MCU220 and the main controller 210.
Referring to fig. 2, in the four-bit digital pipe 230, there are 7 corresponding digital pipe section signal ports, i.e., a digital pipe section signal port 231, a digital pipe section signal port 232, a digital pipe section signal port 233, a digital pipe section signal port 234, a digital pipe section signal port 235, a digital pipe section signal port 236, a digital pipe section signal port 237, and four corresponding digital ports, i.e., a digital port 238, a digital port 239, a digital port 2310, and a digital port 2311. In addition, the four-digit numerical pipe 230 further includes 4 numerical display modules 2312, and each numerical display module includes 7 numerical pipe sections 2313. In the 7 digital pipe section signal ports, data received by each digital pipe section signal port correspondingly controls one digital pipe section.
Optionally, a capacitor 260 is further included between the power supply 240 and the ground 250.
It should be noted that, in the embodiment of the present application, the communication connection of each wire may perform a bidirectional data transmission process. The embodiment of the present application does not limit the specific content of signal interaction. The resistors can be set between the wires according to specific conditions, for example, in the connection between the display MCU and the digital port of the four-digit digital tube.
To sum up, the digital display device on charactron based on single-line communication that this application embodiment provided shows MCU's setting between main control unit and four-digit digital tube's being connected for main control unit only need draw forth single data line, can realize communication connection and carry out signal transmission with MCU, and then signal processing and data forwarding through MCU receive and handle by four-digit digital tube, and then realize digital demonstration. In the process of controlling the nixie tube to carry out digital display, only a single communication line of the main controller is occupied, and the problem that pin positions are limited when the nixie tube is connected with the driving chip is solved.
Fig. 3 is a flowchart illustrating a digital display method on a nixie tube based on single-wire communication according to an exemplary embodiment of the present application, and please refer to fig. 3, where the process includes:
in step 301, the master controller generates a control signal.
In the embodiment of the application, the control signal is used for indicating the digital display form and the display position of the thought digital code tube. Alternatively, the master controller generates the control signal according to the operation used on the master, or the master controller generates the control signal from other digital signals or analog signals through data conversion.
Step 302, the main controller sends the control signal to the display MCU.
The process is that the main controller transmits data to the display MCU in a single-wire communication mode.
Step 303, the display MCU receives the control signal.
The process is a process of receiving the control signal by the display MCU through the signal receiving interface.
And 304, decoding the control signal by the display MCU to obtain a code tube control signal and a digital display module selection signal.
In the embodiment of the present application, the code pipe control signal includes a code pipe identifier, and the digital display module selection signal includes a digital identifier. The code pipe identification is used for uniquely indicating a pipe section signal port for transmitting the control signal by the display MCU, and the digit identification is used for uniquely indicating a digit port for transmitting the control signal by the display MCU.
In step 305, the display MCU determines the target pipe segment signal port corresponding to the code pipe identifier and the target digital port corresponding to the digital display module selection signal.
In the embodiment of the application, the display MCU determines the target pipe segment signal port and the target digital port for transmission. And the target pipe section signal port and the target digital port of the display MCU are both connected with a lead and lead to corresponding ports on the four-bit digital code pipe.
And step 306, the display MCU sends a code tube control signal to the four-digit digital tube through the target tube section signal port, and sends a digital display module selection signal to the four-digit digital tube through the target digit port.
In step 307, the four-digit digitizer receives the signal for controlling the digitizer and the signal for selecting the digital display module.
In step 308, the four-bit digital pipeline displays data based on the pipeline control signal and the digital display module selection signal.
The process shown in step 306 to step 308 is a process of transmitting a signal by the display MCU, and receiving and correspondingly displaying the signal by the four-bit digital code tube. Optionally, the four-digit digital pipe determines the digital display module to be displayed based on the port receiving the digital display module selection signal, and lights up and displays the digital pipe segment in the corresponding display module based on the received code pipe control signal.
It should be noted that the four-digit digital tube designed in the embodiment of the present application can not only display numbers according to signals, but also display partial letters and symbols.
To sum up, the method according to the embodiment of the present application, the setting of the display MCU is performed between the connection of the main controller and the four-digit digital tube, so that the main controller can realize communication connection with the MCU and perform signal transmission by only drawing out a single data line, and then perform signal processing and data forwarding through the MCU without determining the receiving timing sequence of the four digital display modules, and the display of the numbers can be performed by the four-digit digital tube and processing the received signals. In the process of controlling the nixie tube to carry out digital display, only a single communication line of the main controller is occupied, and the problems that pin positions are limited and signal time sequence requirements are strict when the nixie tube is connected with the driving chip are solved.
Fig. 4 is a flowchart illustrating a method for displaying numbers on a nixie tube based on single-wire communication according to an exemplary embodiment of the present application. Referring to fig. 4, the method includes:
in step 401, the main controller receives a numerical display signal.
In the embodiment of the present application, the main controller may be implemented as a single chip microcomputer, or as a driving chip having a data transmission function. Optionally, the master controller is model 74HC595.
In the embodiment of the present application, the numerical display signal received by the main controller may be a control signal sent by another device. In one example, the main controller is implemented as an STM32 single chip microcomputer, the temperature sensor is in communication connection with the STM32 single chip microcomputer and sends a detected temperature signal to the STM32 single chip microcomputer, and when the four-bit digital code tube is used for displaying the temperature, the numerical display signal is a signal directly indicating the temperature value, and optionally, the numerical display signal is sent to the main controller in the form of a digital signal or an analog signal.
At step 402, the master controller determines display data based on the numerical display signal.
The process is that the main controller determines the display data according to the received signal, that is, the main controller determines the content to be displayed by the four-digit digital tube according to the pre-stored data conversion rule.
In step 403, the master controller generates the bootstrap code based on the bootstrap code level strength rule and the bootstrap code time rule.
As indicated in step 301, the master controller will generate a control signal based on the display data, and in this embodiment, the control signal includes a guide code for indicating the start of the control signal, a data code for directly characterizing the display data, a data pipe selection code for indicating the kind of four-bit digital code pipe to which the control signal is adapted, and an end code for indicating the end of the control signal. Therefore, the generation rules of the boot code, the data pipe selection code and the end code are shown in steps 403 to 407.
It should be noted that, in the embodiment of the present application, the control signal is implemented as a combination of a high level and a low level, and the generation rules of the bootstrap code, the data pipe selection code, and the end code are all combination rules of a high level and a low level. In the present application, the voltage signal having a voltage intensity range of \8230, 8230, V is determined to be high, and the voltage signal having a voltage intensity range of \8230, 8230, V is determined to be low.
In the embodiment of the present application, the preamble corresponds to a preamble duration and a preamble level type, and optionally, the preamble is implemented as a low level with a duration less than 5 ms. In one example, the boot code is implemented as a low level of 580 μ s.
In step 404, the host controller converts the display data into binary data based on the data code conversion rules.
In step 405, the host controller generates a data code based on the binary data signal conversion rule according to the binary data.
Steps 404 to 405 are binary data conversion and data code generation rules performed by the host controller.
First, the master controller will convert the display data to binary data based on the determined display data, where a way of converting the display data to binary data is provided:
(1) And determining the display content in the four digital display modules according to the display data.
(2) And sequencing the display contents in the four digital display modules based on the sequencing rule. For example, four digital display modules need to display the data 1234 from left to right, and the sorting rule of the data codes is generated from right to left, and at this time, the sorting result is determined to be "4321".
(3) And determining the corresponding relation between the digital pipe section and the binary code number. The digital display module is provided with 7 digital pipe sections, the binary data generated correspondingly can be 8-bit binary data, the first binary data is always set to be 0, the eighth binary data at the second position respectively corresponds to the on and off of the No. 7 to No. 1 digital pipe sections, the binary data 1 indicates that the corresponding pipe section is on, and the binary data 0 indicates that the corresponding pipe section is off.
(4) And converting the sorted display data into binary data based on the corresponding relation. After the corresponding relationship is determined, the sorted display data "4321" is correspondingly converted into four-segment eight-bit binary data, i.e., "01001111, 01011011, 01011011, 00000110"
(5) According to the binary data, a data code is generated based on a binary data signal conversion rule. In determining the corresponding 32-bit binary data, binary data 0 and binary data 1 are converted into corresponding signal outputs according to a signal conversion rule. Optionally, in the binary signal conversion rule, the characterization of the 0 data is implemented to output a high level signal for a first length of time, and then output a low level signal for a second length of time; in the binary signal conversion rule, the characterization of 1 data is implemented to output a low level signal for a first length of time, followed by a high level signal for a second length of time; wherein the time length of the first time period is 5 times of the time length of the second time period. In one example, binary data 1 is indicated by first outputting a 75 μ s high, followed by a 15 μ s low, and binary data 0 is indicated by first outputting a 15 μ s high, followed by a 75 μ s low.
Optionally, after the display data is converted into binary data, the binary data may be further converted into 16-ary data for storage and data processing by the main controller. Taking the display content in the digital display module as the number 1 as an example, the binary data corresponding to the number 1 is "00000110", and the binary data converted into 16 is "0x06".
In the embodiment of the application, the content in the data code will sequentially indicate the numbers displayed in the four-digit numerical code tube, or the display MCU will set the decoding rule to enable the four-digit numerical code tube to display the corresponding numbers in a specific sequence. That is, the main controller has no timing limitation on the transmission process of the control signals corresponding to the 4 digital display modules, and only transmits the signals according to the signal transmission sequence in the same signal segment.
At step 406, the master controller determines a data pipe selection code based on the type of the four-digit numerical pipe.
In the embodiment of the present application, the four-digit nixie tube may be a common cathode nixie tube or a common anode nixie tube, and since the decoding logics of the display MCUs are different corresponding to the common cathode nixie tube and the common anode nixie tube, the kind of the four-digit nixie tube needs to be determined by the data tube selection code. Alternatively, the data pipe selection code is implemented as 1 being binary data. In one example, data 1 indicates that control is sun nixie tube and data 0 indicates that control is cathode nixie tube.
In step 407, the master controller generates an end code based on the end code level strength rule and the end code time rule.
In the embodiment of the present application, the end code corresponds to an end code duration and an end code level type, and optionally, the end code is implemented as a low level with a duration less than 5 ms. In one example, the end code is implemented as a high level of 250 μ s
Step 408, the main controller sends the control signal to the display MCU.
The process is that the main controller sends the generated control signal to the display MCU for the MCU to decode.
Step 409, the display MCU responds to the received boot code and decodes the boot code, and starts the counting register.
Steps 409 to 413 are decoding processes of the display MCU. Optionally, step 409 is a process of displaying that the MCU starts its own counting register after being activated by the boot code to determine the number of data codes.
And step 410, decoding the data code by the display MCU to obtain display data.
And 411, the display MCU fills the register according to the number of the binary data obtained by decoding.
In the embodiment of the application, the display MCU decodes the data code according to the rule in the main controller to obtain 32-bit display data, and correspondingly fills the register. Optionally, the number of the registers that can accommodate binary data is also 32 bits.
In step 412, the display MCU determines that the format of the display data is correct in response to the four registers being filled and no data overflow.
The process is a verification process for the data code, namely, the display MCU verifies the display data through the data storage condition of the register. When the verification result indicates that the format of the display data is correct, the subsequent control signal sending process can be executed.
Optionally, when the verification result indicates that the format of the display data is incorrect, the display MCU generates an exception feedback signal and feeds the exception feedback signal back to the main controller, so that the main controller sends a corresponding signal again or performs an exception detection procedure.
Step 413, the display MCU generates the code tube control signal and the digital display module selection signal.
The process is the process of generating the corresponding digital display module selection signal after the display MCU completes decoding.
And step 414, the display MCU sends a code tube control signal to the four-digit digital tube through the target tube section signal port, and sends a digital display module selection signal to the four-digit digital tube through the target digit port.
In step 415, the four-bit digital pipeline receives the code management control signal and the digital display module selection signal.
In step 416, the four-bit digital pipeline displays data based on the pipeline control signal and the digital display module selection signal.
The process from step 414 to step 416 corresponds to the process from step 306 to step 308, i.e. the display process of the four-digit numerical pipe for the numbers is not described herein.
In step 417, the display MCU sends a cancel display control signal to the four-bit digital code tube.
In step 418, the four-bit digitizer receives the display cancellation control signal.
In step 419, the four-bit digitizer stops the digital display based on the cancel display control signal.
Steps 417 to 419 are the process of the display MCU indicating the four-digit nixie tube to stop the digital display after the data is displayed normally. Optionally, the display MCU sends the display cancellation control signal after a fixed time elapses, or sends the display cancellation control signal when receiving an external control instruction.
To sum up, the method provided by the embodiment of the present application displays the setting of the MCU between the connection of the main controller and the four-digit digital tube, so that the main controller can realize communication connection with the MCU and perform signal transmission only by leading out a single data line, and further perform signal processing and data forwarding through the MCU without determining the receiving timing sequence of the four digital display modules, and the MCU can receive and process the received signal by the four-digit digital tube, thereby realizing digital display. In the process of controlling the nixie tube to carry out digital display, only a single communication line of the main controller is occupied, and the problems that pin positions are limited and signal time sequence requirements are strict when the nixie tube is connected with the driving chip are solved.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (9)

1. A digital display device on a nixie tube based on single-wire communication is characterized in that the display device comprises a main controller, a display Micro Control Unit (MCU) and a four-digit nixie tube;
the four-digit digital tube comprises four digital display modules, 7 digital tube section signal ports and 4 digital ports, and each digital display module in the four digital display modules comprises 7 digital tube sections;
the transmitting data port of the main controller is in communication connection with the receiving data port of the display MCU;
the four digital signal output ports of the display MCU are respectively in communication connection with the 4 digital ports of the four-bit digital tube, and the 7 digital tube section signal ports of the display MCU are respectively in communication connection with the 7 digital tube section signal ports of the four-bit digital tube.
2. A method for digital display on a nixie tube based on single-wire communication, which is applied to the digital display device on the nixie tube based on single-wire communication according to claim 1;
the method comprises the following steps:
the main controller generates a control signal, and the control signal is used for indicating the digital display form and the display position of the four-digit digital tube;
the main controller sends the control signal to a display MCU;
the display MCU receives the control signal;
the display MCU decodes the control signal to obtain a code tube control signal and a digital display module selection signal, wherein the code tube control signal comprises a code tube identifier, and the digital display module selection signal comprises a digital identifier;
the display MCU determines a target pipe section signal port corresponding to the code pipe identification and a target digital port corresponding to the digital display module selection signal;
the display MCU sends the code tube control signal to a four-digit digital tube through the target tube section signal port and sends the digital display module selection signal to the four-digit digital tube through the target digit port;
the four-bit digital nixie tube receives the code tube control signal and the digital display module selection signal;
and the four-bit digital code tube performs data display based on the code tube control signal and the digital display module selection signal.
3. The method of claim 2, wherein the master controller generates control signals comprising:
the main controller receives a numerical display signal;
the main controller determines display data based on the numerical display signal, wherein the display data is displayed on the four-digit digital tube;
the main controller generates a control signal based on the display data, wherein the control signal comprises a guide code, a data pipe selection code and an end code, the guide code is used for indicating the beginning of the control signal, the data code is used for directly representing the display data, the data pipe selection code is used for indicating the type of a four-digit digital pipe adapted to the control signal, and the end code is used for indicating the end of the control signal.
4. The method of claim 3, wherein the master controller generates control signals based on the display data, comprising:
the master controller generates the bootstrap code based on a bootstrap code level strength rule and a bootstrap code time rule;
the main controller converts the display data into binary data based on the data code conversion rule;
the main controller generates the data code based on a binary data signal conversion rule according to the binary data;
the main controller determines the data pipe selection code based on the type of the four-digit digital pipe;
the main controller generates the end code based on the end code level intensity rule and the end code time rule.
5. The method of claim 4, wherein the binary data comprises 0 data and 1 data;
in the binary signal conversion rule, the characterization of 0 data is implemented to output a high level signal for a first length of time followed by a low level signal for a second length of time;
in the binary signal conversion rule, the characterization of 1 data is implemented to output a low level signal for a second length of time, followed by a high level signal for a first length of time;
wherein the time length of the first time period is 5 times of the time length of the second time period.
6. The method of claim 2, wherein the display MCU decodes the control signals to obtain a code tube control signal and a digital display module selection signal, comprising:
the display MCU responds to the received boot code and decodes the boot code, and starts a counting register;
the display MCU decodes the data code to obtain display data;
the display MCU performs data format verification on the display data;
and the display MCU responds to the correct format of the display data and generates the code tube control signal and the digital display module selection signal.
7. The method of claim 6, wherein the display MCU further comprises four registers, and wherein the display MCU performs data format validation on the display data, comprising:
the display MCU fills the register according to the quantity of the binary data obtained by decoding;
and the display MCU responds to that the four registers are all filled and no data overflows, and determines that the format of the display data is correct.
8. The method of claim 7, wherein each of said registers is configured to register 8 as binary data.
9. The method of claim 2, wherein the four-bit digital signal pipe after performing data display based on the code pipe control signal and the digital display module selection signal comprises:
the display MCU sends a display canceling control signal to the four-digit digital tube;
the four-digit digital tube receives a display canceling control signal;
the four-digit digital tube stops digital display based on the display cancellation control signal.
CN202210694705.2A 2022-06-20 2022-06-20 Digital display device and method on nixie tube based on single-wire communication Pending CN115240577A (en)

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