CN219349741U

CN219349741U - Double-row nixie tube display screen

Info

Publication number: CN219349741U
Application number: CN202223583993.9U
Authority: CN
Inventors: 金万顺; 邵进宝; 董成菠
Original assignee: Suzhou Julian Electric Co ltd
Current assignee: Suzhou Julian Electric Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-07-14
Anticipated expiration: 2032-12-30

Abstract

The application discloses a double-row nixie tube display screen, which comprises a base, a panel arranged on the base, a 10-bit nixie tube arranged on the panel and a control board arranged in the base; the upper row and the lower row of the 10-bit nixie tubes are uniformly distributed, each bit nixie tube comprises 8 sections of LED lamps, anodes of each bit nixie tube are connected, cathodes of each bit nixie tube at the same position are connected, and a cathode lead of each bit nixie tube is defined as a bit selection end; the control board comprises a first drive IC, a second drive IC, a third drive IC and an isolation chip, wherein the first drive IC and the second drive IC are connected in a cascading mode, the third drive IC is connected with the second drive IC, and the first drive IC is connected with the nixie tube; the first driving IC controls the segment selection end pin of the nixie tube, and the second driving IC and the third driving IC control the bit selection end pin of the nixie tube. The double-row nixie tube display screen can reliably display double-row parameters and meet the use requirements.

Description

Double-row nixie tube display screen

Technical Field

The application relates to the technical field of LED display devices, in particular to a double-row nixie tube display screen.

Background

A common single-row nixie tube display screen in the market has an coelenterate which cannot meet the requirement when a plurality of pieces of electrical data need to be monitored simultaneously in certain industrial control industries, namely, two or more parameters such as output current, output voltage, motor rotating speed, temperature and the like cannot be monitored simultaneously. At this time, a display screen that can support simultaneous display of two or more kinds of display screens is required to display these electrical parameters. In order to meet the use requirements of daily monitoring and displaying two kinds of data, the application provides a double-row nixie tube display screen.

Disclosure of Invention

The purpose of the application is to provide a double-row nixie tube display screen, so as to solve the problem that the single-row nixie tube display screen in the prior art provided in the background art cannot meet double-row parameter display.

In order to achieve the above purpose, the present application discloses the following technical solutions: a double-row nixie tube display screen comprises a base, a panel arranged on the base, a 10-bit nixie tube arranged on the panel and a control panel arranged in the base; the upper and lower rows of the 10-bit nixie tubes are uniformly distributed, each bit nixie tube comprises 8 sections of LED lamps, anodes of each bit nixie tube are connected, cathodes of each bit nixie tube at the same position are connected, and a cathode lead of each bit nixie tube is defined as a bit selection end;

the control board comprises a first drive IC, a second drive IC, a third drive IC and an isolation chip, wherein the first drive IC and the second drive IC are connected in a cascading mode, the third drive IC is connected with the second drive IC, and the first drive IC is connected with the nixie tube; the first driving IC controls a section selection end pin of the nixie tube, and the second driving IC and the third driving IC control a position selection end pin of the nixie tube; the nixie tube is lightened when the section selection end of the nixie tube inputs low level and the position selection end of the nixie tube inputs high level; the isolation chip is connected with the first driving IC.

Preferably, the first driving IC and the second driving IC are both 74HC595, the third driving IC is 74HC138, and the isolation chip is 74HC14.

Preferably, the connection of the first driver IC and the second driver IC by a cascade method specifically includes: the pin 9 of the first driving IC is connected with the pin 14 of the second driving IC, the pin 11 of the first driving IC is connected with the pin 11 of the second driving IC, and the pin 12 of the first driving IC is connected with the pin 12 of the second driving IC.

Preferably, pins 5, 6 and 7 of the second driving IC are respectively connected with pins 1, 2 and 3 of the third driving IC, and parallel output data of pins 5, 6 and 7 of the second driving IC controls an enable pin of the third driving IC.

Preferably, the pins QA, QB, QC, QD, QE, QF, QG, QH of the first driving IC are respectively connected with the pins A, B, C, D, E, F, G, DP of the display screen in a one-to-one correspondence manner, and current limiting resistors are respectively connected between the pin QA, QB, QC, QD, QE, QF, QG, QH of the first driving IC and the pin A, B, C, D, E, F, G, DP of the display screen.

Preferably, pins of an LED0, an LED1, an LED2, an LED3, an LED4, an LED5, an LED6, an LED7, an LED8 and an LED9 of the display screen are respectively connected with a bit selection end of the 10-bit nixie tube through mutually connected voltage dividing resistors and triodes.

The beneficial effects are that: the double-row nixie tube display screen adopts five-bit nixie tubes uniformly distributed in an upper row and a lower row, so that when the upper row of 5-bit nixie tubes display output such as current, the lower row of 5-bit nixie tubes display electric parameters such as frequency or rotating speed, and the like, thereby being capable of meeting the display of two parameter detection and avoiding the inconvenience brought by the traditional manual switching of display contents. The double-row nixie tube display screen adopts a 10-bit common anode circuit, and only a singlechip is required to send low level to enable the nixie tube to be lightened to display required parameter information. The utility model discloses a total 18 pins on the 10 bit charactron have been used, simultaneously, the distribution setting of 8 about 18 pins adoption, the condition of the anti-fashionable dress of charactron display screen plug-in components has been stopped through asymmetric pin distribution, simultaneously, two rows of pins left side alignment from top to bottom for it is convenient to align when the plug-in components. And a current limiting resistor is added between the main control MCU and the bit selection end of the nixie tube, so that the problem of burning out the LED caused by overlarge current flowing through the nixie tube can be prevented.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a display screen of a double-row nixie tube in an embodiment of the present application;

FIG. 2 is a circuit diagram of a 10-bit nixie tube connection in an embodiment of the present application;

fig. 3 is a schematic connection diagram of a first driving IC, a second driving IC, a third driving IC, and an isolation chip in the embodiment of the present application;

fig. 4 is a schematic diagram of a peripheral circuit of a separation chip in an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Examples

Referring to FIG. 1, a double-row nixie tube display screen comprises a base, a panel arranged on the base, a 10-bit nixie tube arranged on the panel, and a control board arranged in the base. The base refers to a mounting structure of a display screen of the nixie tube, and can be, but not limited to, a shell structure. The panel can be any structure used for installing the nixie tube in the prior art, such as an acrylic plate and the like.

And in combination with the figures 1 and 2, the upper and lower rows of the 10-bit nixie tubes are uniformly distributed, each bit of the nixie tubes comprises 8 sections of LED lamps, the 7 sections of LED lamps form an 8 shape, and the other 1 section of LED lamps serve as decimal points. The anodes of the nixie tubes are connected, the cathodes of the same positions of the sections of the nixie tubes are connected, and the cathode lead of each nixie tube is defined as a position selection end. In practical application, the total 18 pins used in all the pins of the nixie tube are sequentially arranged from left to right and from top to bottom as shown in fig. 1, namely, the arrangement mode of the 5 nixie tubes is up and down. The size of the nixie tube is 48.5 x 32 x 7, so that the nixie tube can be used in places with strict size requirements, and the problem of overlong display screen length of a single-row nixie tube is avoided. Because the double-row nixie tube display screen has limited pins, the driving lighting mode adopts dynamic driving. The dynamic driving is to connect a, b, c, d, e, f, g, dp homonymous pins of all nixie tubes, and the other end, namely the common end, is led out of a control line and defined as a bit selection end, and bit selection control signals are controlled by independent I/O ends. When the character type is output, the I/O controls a certain position selection pin to be displayed, the section selection controls a certain section selection pin to be displayed, the nixie tube without gating can not be lightened, and the nixie tube is lightened in a scanning mode by alternately controlling the position selection pin and the section selection pin of the nixie tube. In the process, due to the persistence effect of human vision, the nixie tube is not lightened simultaneously, but only fast in scanning, and the human feeling is a group of stable display data.

Referring to fig. 3 and 4, the control board includes a first driving IC, a second driving IC, a third driving IC, and an isolation chip, the third driving IC is connected to the second driving IC, and the first driving IC is connected to the nixie tube. The first driving IC controls the segment selection end pin of the nixie tube, and the second driving IC and the third driving IC control the bit selection end pin of the nixie tube. It should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and that standard components used in the present application are commercially available and may be customized according to the description and drawings. The digital tube is lighted when the segment selection end of the digital tube inputs low level and the bit selection end of the digital tube inputs high level. The first driving IC and the second driving IC are connected in a cascading mode, specifically, the types of the first driving IC and the second driving IC are 74HC595, the type of the third driving IC is 74HC138, the type of the isolation chip is 74HC14, and the isolation chip is connected with the first driving IC and used for isolating signals between the main chip and the first driving IC. The 9 pin of the first driving IC is connected with the 14 pin of the second driving IC, the 11 pin of the first driving IC is connected with the 11 pin of the second driving IC, and the 12 pin of the first driving IC is connected with the 12 pin of the second driving IC. Pins 5, 6 and 7 of the second driving IC are respectively connected with pins 1, 2 and 3 of the third driving IC, and the parallel output data of pins 5, 6 and 7 of the second driving IC controls an enabling pin of the third driving IC. It should be noted that, only the connection relationship between the chips is described herein, and the required branch circuits or devices such as the protection circuit, the voltage stabilizing circuit, the clock circuit, etc. and the parameters (such as the resistance value, the model, etc.) of the devices may be detailed in the portions shown in fig. 3 and fig. 4, which are not described herein.

In this embodiment, the pins QA, QB, QC, QD, QE, QF, QG, QH of the first driving IC are respectively connected with the pins A, B, C, D, E, F, G, DP of the display screen in a one-to-one correspondence manner, and current limiting resistors are connected between the pins QA, QB, QC, QD, QE, QF, QG, QH of the first driving IC and the pin A, B, C, D, E, F, G, DP of the display screen, so that the problem of burning out the LEDs caused by excessive current flowing through the display screen of the nixie tube can be effectively prevented. The LED0, LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 and LED9 pins of the display screen are respectively connected with the position selection end of the 10-bit nixie tube through the voltage dividing resistor (the positions and the electrical parameters of the voltage dividing resistor are as R11, R13, R14, R15, R16, R23, R22, R21, R20 and R19 in the figure 4) and the triode (the positions, the connection relation and the types of the voltage dividing resistor are as Q2, Q3, Q4, Q5, Q6, Q8, Q9, Q10, Q11 and Q12 in the figure 4), and then the position selection pin of the display screen of the double-row nixie tube is controlled by sending data through the electrical characteristics of the triode. Similarly, as can be seen from fig. 4, the emitters of all the transistors are connected and then connected with the collector of a PNP transistor, the emitter of the PNP transistor is a VCC terminal, and the base set is connected with a signal terminal through a resistor R18, so that the transistor stably operates, which can be explicitly specified by those skilled in the art based on the description of the present application and the illustration of the drawing, and will not be described herein.

Working principle: the section selection end of the nixie tube is input with low level, the position selection end of the nixie tube is input with high level, the corresponding nixie tube can display the number to be displayed through the corresponding LED, and the first driving IC, the second driving IC and the third driving IC control the on-off combination of the LED lamp, so that the needed information is displayed.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, and any modifications, equivalents, improvements or changes that fall within the spirit and principles of the present application are intended to be included in the scope of protection of the present application.

Claims

1. A double-row nixie tube display screen comprises a base, a panel arranged on the base, a 10-bit nixie tube arranged on the panel and a control panel arranged in the base; the digital tube is characterized in that the upper row and the lower row of the 10-bit digital tube are uniformly distributed, each bit digital tube comprises 8 sections of LED lamps, anodes of each bit digital tube are connected, cathodes of each bit digital tube at the same position are connected, and a cathode lead of each bit digital tube is defined as a bit selection end;

2. The dual-row nixie tube display screen of claim 1 wherein the first and second driver ICs are each 74HC595, the third driver IC is 74HC138, and the spacer chip is 74HC14.

3. The dual-row nixie tube display screen of claim 2 wherein the first driver IC and the second driver IC are connected in a cascade manner comprising: the pin 9 of the first driving IC is connected with the pin 14 of the second driving IC, the pin 11 of the first driving IC is connected with the pin 11 of the second driving IC, and the pin 12 of the first driving IC is connected with the pin 12 of the second driving IC.

4. The dual-row nixie tube display screen of claim 3 wherein pins 5, 6 and 7 of the second driving IC are respectively connected with pins 1, 2 and 3 of the third driving IC, and the parallel output data of pins 5, 6 and 7 of the second driving IC controls the enabling pins of the third driving IC.

5. The dual-row nixie tube display screen of claim 1 wherein the QA, QB, QC, QD, QE, QF, QG, QH pins of the first driving IC are respectively connected with A, B, C, D, E, F, G, DP pins of the display screen in a one-to-one correspondence manner, and current limiting resistors are respectively connected between the QA, QB, QC, QD, QE, QF, QG, QH pin of the first driving IC and the A, B, C, D, E, F, G, DP pin of the display screen.

6. The double-row nixie tube display screen according to claim 1, wherein pins of an LED0, an LED1, an LED2, an LED3, an LED4, an LED5, an LED6, an LED7, an LED8 and an LED9 of the display screen are respectively connected with a position selection end of the 10-position nixie tube after passing through a voltage dividing resistor and a triode which are connected with each other.

7. The dual-row nixie tube display screen of claim 1 wherein the first driver IC is of a type 74HC595, the second driver IC is of a type 74HC595, and the third driver IC is of a type 74HC138.