CN202887672U

CN202887672U - Dynamic display device

Info

Publication number: CN202887672U
Application number: CN 201220538243
Authority: CN
Inventors: 司伟峰; 莫易
Original assignee: HANGZHOU ZHEBAO MICROCONTROLLER TECHNOLOGY Co Ltd
Current assignee: HANGZHOU ZHEBAO MICROCONTROLLER TECHNOLOGY Co Ltd
Priority date: 2012-10-19
Filing date: 2012-10-19
Publication date: 2013-04-17
Anticipated expiration: 2022-10-19

Abstract

The utility model provides a dynamic display device which comprises a central processing unit (CPU) and at least two Nixie tubes DS and also comprises a shifting register U1 and a Darlington tube array U2, wherein a data output end of the CPU is connected with a data input end of the shifting register U1; a parallel output end of the shifting register U1 is connected with a segment code wire of the Nixie tubes DS; a gate output end of the CPU is connected with the input end of the Darlington tube array U2; and the output end of the Darlington tube array U2 is connected with a common end of the Nixie tubes DS. According to the dynamic display device, the gate signal output by the CPU is output to the Nixie tubes DS through the Darlington tube array U2, the lighting time of the Nixie tubes DS is reduced, the energy consumption of the Nixie tubes DS is reduced, the CPU transmits the display data to the Nixie tubes DS in parallel through the shifting register U1, a signal line is saved, and the circuit is simplified.

Description

Dynamic display device

Technical field

The utility model relates to display device, specifically, relates in particular to a kind of dynamic display device.

Background technology

Charactron is to be usually used in the parameter that all available digital such as displaying time in the instrument and meter, date, temperature represent, owing to low price, the use of charactron are simple, uses very extensive in field of household appliances such as air-conditioning, water heater, refrigerators.Existing charactron shows the usually static display mode of employing, and the brightness of charactron is higher under this mode.But charactron is lighted always during owing to static the demonstration, and power consumption is larger, and under the static display mode, a charactron will take 7 or 8 mouth lines, and the number of charactron is more, and the mouth line that takies is more.

The utility model content

The purpose of this utility model is for the problems referred to above, and a kind of dynamic display device is provided, and has reduced lighting the time of charactron DS, has reduced the energy consumption of charactron DS, has saved signal wire, has simplified circuit.

For achieving the above object, the utility model has adopted following technical proposal: a kind of dynamic display device is provided, comprise central processor CPU and at least two charactron DS, wherein, also comprise shift register U1 and Darlington transistor array U2, the data output end of described central processor CPU connects the data input pin of shift register U1, the parallel output terminal of described shift register U1 connects the segment encode line of charactron DS, the Strobe output of described central processor CPU connects the input end of Darlington transistor array U2, and the output terminal of this Darlington transistor array U2 connects the common port of charactron DS.

Above-mentioned dynamic display device, wherein, the individual number average of the input end of the Strobe output of described central processing unit and Islington pipe array equates with the number of charactron.

Compared with prior art, the utility model has the advantage of: the dynamic display device that the utility model provides, gating signal by central processor CPU output outputs to charactron DS by Darlington transistor array U2, reduced lighting the time of charactron DS, reduced the energy consumption of charactron DS, and central processor CPU will show that by shift register U1 data parallel sends to charactron DS, save signal wire, simplify circuit.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the circuit diagram of a kind of dynamic display device of the utility model;

Fig. 2 is the driving sequential chart of the central processor CPU of a kind of dynamic display device of the utility model.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.

As shown in Figure 1, a kind of dynamic display device is provided, comprise central processor CPU and at least two charactron DS, wherein, also comprise shift register U1 and Darlington transistor array U2, the data output end D1 of described central processor CPU connects the data input pin of shift register U1, the parallel output terminal of described shift register U1 connects each segment encode line a ~ dp of charactron DS, and each segment encode line of a plurality of charactron DS all is connected to the corresponding parallel output terminal of shift register U1, the serial data of the data output end D1 output of central processor CPU, parallel output is to charactron DS behind shift register U1, thereby only take mouth line of central processor CPU, just can be a plurality of charactron DS output display data, save a mouthful line, simplify circuit.The Strobe output X1 of described central processor CPU ~ XN connects the input end of Darlington transistor array U2, the output terminal of this Darlington transistor array U2 connects the common port of charactron DS, when and the input end of Darlington transistor array U2 when being high level, the output terminal of Darlington transistor array U2 is low level, otherwise opposite.The individual number average of the Strobe output X1 ~ XN of described central processor CPU and the input end of Darlington transistor array U2 equates with the number of charactron DS, the gating signal of central processor CPU output, behind Darlington transistor array U2, output to the common port of each charactron, so if current time chooses one of them charactron DS to light, then this central processor CPU is to the common port output gating signal of this charactron DS, choose and light this charactron DS, other charactrons DS does not light.

If be provided with four common cathode charactron DS in the dynamic display device, when common port is low level, selected the lighting of common cathode charactron DS, then the data of central processor CPU count end D1 and four gating end X1 ~ X4 the signal driver sequential as shown in Figure 2, when namely acting on the gating end X1 output high level of central processor CPU of one of them common cathode charactron DS common port, so that this common cathode charactron DS is lit, the defeated D1 of the data of this central processor CPU goes out the demonstration data of this common cathode charactron of end output DS displaying contents simultaneously, and act on the gating end X2 of the central processor CPU of its excess-three common cathode charactron DS common port ~ X3 output low level, its excess-three common cathode charactron DS does not light, even this moment, the segment encode line of its excess-three common cathode charactron DS was also inputted the demonstration data, but because its excess-three common cathode charactron DS does not light, the displaying contents that shows that data are corresponding can not appear on its excess-three common cathode charactron DS yet, so with the certain frequency ringing in each common cathode charactron DS, utilize the visual persistence effect of human eye, as long as the frequency of scanning just can realize the dynamic demonstration of charactron DS greater than 24Hz.

In sum, the dynamic display device that the utility model provides, gating signal by central processor CPU output outputs to charactron DS by Darlington transistor array U2, reduced lighting the time of charactron DS, reduced the energy consumption of charactron DS, and central processor CPU will show that by shift register U1 data parallel sends to charactron DS, save signal wire, simplify circuit.

The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. dynamic display device, comprise central processor CPU and at least two charactron DS, it is characterized in that, also comprise shift register U1 and Darlington transistor array U2, the data output end of described central processor CPU connects the data input pin of shift register U1, the parallel output terminal of described shift register U1 connects the segment encode line of charactron DS, the Strobe output of described central processor CPU connects the input end of Darlington transistor array U2, and the output terminal of this Darlington transistor array U2 connects the common port of charactron DS.

2. dynamic display device according to claim 1 is characterized in that, the individual number average of the input end of the Strobe output of described central processing unit and Islington pipe array equates with the number of charactron.