CN104459258B - Oscilloscope based on lamination amplification structural circuit design - Google Patents
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Abstract
本发明公开了一种基于叠层放大结构电路设计的示波器，包括衰减器、电压跟随器、放大器、AD采样电路、控制器、触发电路、时钟模块、数据缓存器、显示器；其中衰减器、电压跟随器、放大器、AD采样电路、数据缓存器、显示器依次相连，AD采样电路还分别与时钟模块、触发电路相连；所述触发器分别与数据缓存器、控制器相连；本发明在信号接收前端加入衰减器和放大器，对进入的信号进行前端处理，减少干扰信号的进入，保持信号的信噪比，提高信号的精确度，同时显示器带有触摸功能更加方便使用时的操作，提高操作效率，内部设置更加人性化，设计新颖，值得推广。
The invention discloses an oscilloscope designed based on a laminated amplifying structure circuit, including an attenuator, a voltage follower, an amplifier, an AD sampling circuit, a controller, a trigger circuit, a clock module, a data buffer, and a display; wherein the attenuator, voltage The follower, the amplifier, the AD sampling circuit, the data buffer, and the display are connected in sequence, and the AD sampling circuit is also connected to the clock module and the trigger circuit respectively; the triggers are connected to the data buffer and the controller respectively; Add an attenuator and an amplifier to perform front-end processing on the incoming signal, reduce the entry of interference signals, maintain the signal-to-noise ratio of the signal, and improve the accuracy of the signal. At the same time, the display has a touch function to facilitate operation during use and improve operating efficiency. The interior setting is more humanized and the design is novel, which is worth promoting.
Description
技术领域technical field
本发明公开了一种基于叠层放大结构电路设计的示波器，属于信号处理设备技术领域。The invention discloses an oscilloscope designed based on a laminated amplifying structure circuit, which belongs to the technical field of signal processing equipment.
背景技术Background technique
示波器是一种用途十分广泛的电子测量仪器。它能把肉眼看不见的电信号变换成看得见的图像，便于人们研究各种电现象的变化过程。示波器利用狭窄的、由高速电子组成的电子束，打在涂有荧光物质的屏面上，就可产生细小的光点，这是传统的模拟示波器的工作原理。在被测信号的作用下，电子束就好像一支笔的笔尖，可以在屏面上描绘出被测信号的瞬时值的变化曲线。利用示波器能观察各种不同信号幅度随时间变化的波形曲线，还可以用它测试各种不同的电量，如电压、电流、频率、相位差、调幅度等等。An oscilloscope is an electronic measuring instrument with a wide range of uses. It can convert invisible electrical signals into visible images, which is convenient for people to study the changing process of various electrical phenomena. The oscilloscope uses a narrow electron beam composed of high-speed electrons to hit the screen coated with fluorescent substances to produce tiny light spots. This is the working principle of the traditional analog oscilloscope. Under the action of the signal under test, the electron beam is like the tip of a pen, which can draw the change curve of the instantaneous value of the signal under test on the screen. The oscilloscope can be used to observe the waveform curves of various signal amplitudes changing with time, and it can also be used to test various electric quantities, such as voltage, current, frequency, phase difference, amplitude modulation, etc.
示波器是利用电子示波管的特性，将人眼无法直接观测的交变电信号转换成图像，显示在荧光屏上以便测量的电子测量仪器。它是观察数字电路实验现象、分析实验中的问题、测量实验结果必不可少的重要仪器。An oscilloscope is an electronic measuring instrument that uses the characteristics of an electronic oscilloscope tube to convert an alternating electrical signal that cannot be directly observed by the human eye into an image, which is displayed on a fluorescent screen for measurement. It is an essential and important instrument for observing the experimental phenomena of digital circuits, analyzing the problems in the experiment, and measuring the experimental results.
随着电子技术的发展，信号处理技术的进步，现有的设备和测试仪器对示波器的要求越来越高，如何提高示波器的信号处理精度和准确性，已成为目前最需要解决的问题。With the development of electronic technology and the advancement of signal processing technology, existing equipment and testing instruments have higher and higher requirements for oscilloscopes. How to improve the signal processing precision and accuracy of oscilloscopes has become the most urgent problem to be solved.
专利号为201210577495.5，专利名称为一种示波器，该专利针对现有技术中问题提出了解决的问题，但是该专利只是叙述了实现示波器现有功能的手段，并没有提出改进的方式。The patent number is 201210577495.5, and the patent name is an oscilloscope. This patent proposes a solution to the problems in the prior art, but this patent only describes the means for realizing the existing functions of the oscilloscope, and does not propose an improved method.
专利号为201210509747.0，专利名称为一种示波器，该专利指出了现有技术示波器存在的问题，该专利也只是提出了从外壳解决的问题，没有给出如何从内部解决问题的方式，解决效果不明显。The patent number is 201210509747.0, and the patent name is an oscilloscope. This patent points out the problems existing in the oscilloscope in the prior art. This patent also only proposes the problem solved from the shell, and does not give how to solve the problem from the inside. The solution effect is not good. obvious.
同时，现有技术中在放大器电路的具体结构上还有需要进一步改进的地方，以实现降低电路功耗，提高放大效果的作用。At the same time, in the prior art, the specific structure of the amplifier circuit still needs to be further improved, so as to reduce the power consumption of the circuit and improve the amplification effect.
发明内容Contents of the invention
本发明所要解决的技术问题是：针对现有技术的缺陷，提供一种基于叠层放大结构电路设计的示波器，在信号接收前端加入衰减器和放大器，对进入的信号进行前端处理，减少干扰信号的进入。The technical problem to be solved by the present invention is to provide an oscilloscope based on the circuit design of the laminated amplification structure in view of the defects of the prior art, add an attenuator and an amplifier at the front end of the signal receiving, perform front-end processing on the incoming signal, and reduce the interference signal entry.
本发明为解决上述技术问题采用以下技术方案：The present invention adopts the following technical solutions for solving the problems of the technologies described above:
一种基于叠层放大结构电路设计的示波器，包括衰减器、电压跟随器、放大器、AD采样电路、控制器、触发电路、时钟模块、数据缓存器、显示器；An oscilloscope designed based on a stacked amplification structure circuit, including an attenuator, a voltage follower, an amplifier, an AD sampling circuit, a controller, a trigger circuit, a clock module, a data buffer, and a display;
其中衰减器、电压跟随器、放大器、AD采样电路、数据缓存器、显示器依次相连，AD采样电路还分别与时钟模块、触发电路相连；所述触发电路分别与数据缓存器、控制器相连；Wherein the attenuator, the voltage follower, the amplifier, the AD sampling circuit, the data buffer, and the display are connected in sequence, and the AD sampling circuit is also connected with the clock module and the trigger circuit respectively; the trigger circuit is connected with the data buffer and the controller respectively;
输入信号进入衰减器，经由衰减器对信号的幅度进行衰减，衰减之后的信号进入电压跟随器后进入放大器进行信号增益放大，经过放大后的信号进入AD采样电路，AD采样电路对信号进行采样，进行采样后的信号存入数据缓存器，并通过显示器进行显示；The input signal enters the attenuator, and the amplitude of the signal is attenuated by the attenuator. The attenuated signal enters the voltage follower and then enters the amplifier for signal gain amplification. The amplified signal enters the AD sampling circuit, and the AD sampling circuit samples the signal. The sampled signal is stored in the data buffer and displayed on the display;
所述时钟模块为AD采样电路提供采样时钟，控制器控制触发电路启动AD采样电路和数据缓存器；The clock module provides a sampling clock for the AD sampling circuit, and the controller controls the trigger circuit to start the AD sampling circuit and the data buffer;
所述显示器为触摸屏，控制器内设有操作界面，通过显示屏显示，用于操作。The display is a touch screen, and the controller is provided with an operation interface, which is displayed on the display screen and used for operation.
所述放大器的具体电路结构包括第一至第十三电阻、第一至第十一电容、第一至第三三极管，其中，第三电容分别和第一电容的一端、第四电容的一端、第一三极管的基极相连接，第四电容的另一端经过第二电阻分别和第六电阻的一端、第三电阻的一端、第八电容的一端、第五电阻的一端、第七电阻的一端、第十三电阻的一端、第十二电阻的一端相连接，第一电容的另一端分别和第一电阻的一端、第十电阻的一端相连接，第一电阻的另一端经过第八电容和第六电阻的另一端相连接，第十电阻的另一端分别和第九电阻的一端、第七电容的一端相连接，第九电阻的另一端分别和第六电容的一端、第十一电阻的一端相连接，第十一电阻的另一端分别和第二三极管的发射极、第九电容的一端相连接，第六电容的另一端经过第八电阻分别和第二电容的一端、第四电阻的一端相连接，第二电容的另一端和第一三极管的发射极相连接，第四电阻的另一端和第八电容的另一端相连接，第一三极管的集电极分别和第三电阻的另一端、第五电容的一端相连接，第五电容的另一端和第二三极管的基极相连接，第二三极管的集电极和第五电阻的另一端相连接，第九电容的另一端分别和第七电阻的另一端、第三三极管的基极相连接，第三三极管的集电极和第十三电阻的另一端相连接，第七电容的另一端经过第十电容分别和第三三极管的发射极、第十一电容的一端相连接，第十一电容的另一端和第十二电阻的另一端相连。The specific circuit structure of the amplifier includes first to thirteenth resistors, first to eleventh capacitors, and first to third triodes, wherein the third capacitor is connected to one end of the first capacitor and one end of the fourth capacitor respectively. One end is connected to the base of the first triode, and the other end of the fourth capacitor is respectively connected to one end of the sixth resistor, one end of the third resistor, one end of the eighth capacitor, one end of the fifth resistor, and the second resistor through the second resistor. One end of the seventh resistor, one end of the thirteenth resistor, and one end of the twelfth resistor are connected, and the other end of the first capacitor is respectively connected with one end of the first resistor and one end of the tenth resistor, and the other end of the first resistor passes through The eighth capacitor is connected to the other end of the sixth resistor, the other end of the tenth resistor is respectively connected to one end of the ninth resistor and one end of the seventh capacitor, and the other end of the ninth resistor is respectively connected to one end of the sixth capacitor and the second end of the sixth capacitor. One end of the eleventh resistor is connected, the other end of the eleventh resistor is respectively connected to the emitter of the second transistor and one end of the ninth capacitor, and the other end of the sixth capacitor is respectively connected to the second capacitor through the eighth resistor. One end, one end of the fourth resistor is connected, the other end of the second capacitor is connected to the emitter of the first triode, the other end of the fourth resistor is connected to the other end of the eighth capacitor, and the other end of the first triode The collector is respectively connected to the other end of the third resistor and one end of the fifth capacitor, the other end of the fifth capacitor is connected to the base of the second transistor, the collector of the second transistor is connected to the fifth resistor The other ends are connected, the other end of the ninth capacitor is connected to the other end of the seventh resistor and the base of the third transistor, the collector of the third transistor is connected to the other end of the thirteenth resistor, The other end of the seventh capacitor is respectively connected to the emitter of the third transistor and one end of the eleventh capacitor through the tenth capacitor, and the other end of the eleventh capacitor is connected to the other end of the twelfth resistor.
作为本发明的进一步优化方案，所述衰减器采用的芯片型号为HMC274。As a further optimization solution of the present invention, the chip model used in the attenuator is HMC274.
作为本发明的进一步优化方案，所述电压跟随器的芯片型号为LM358。As a further optimization solution of the present invention, the chip model of the voltage follower is LM358.
作为本发明的进一步优化方案，所述控制器采用单片机，所述单片机的型号为STC90C51。As a further optimization solution of the present invention, the controller adopts a single-chip microcomputer, and the model of the single-chip microcomputer is STC90C51.
作为本发明的进一步优化方案，所述时钟模块采用的芯片为DS1302。As a further optimization scheme of the present invention, the chip used in the clock module is DS1302.
作为本发明的进一步优化方案，还包括键盘，所述键盘与控制器相连。As a further optimization solution of the present invention, a keyboard is also included, and the keyboard is connected with the controller.
作为本发明的进一步优化方案，还包括滤波器，所述滤波器设置于电压跟随器和放大器之间，经由电压跟随器输出的信号经过滤波器的滤波后进入放大器进行放大。As a further optimization solution of the present invention, a filter is also included, and the filter is arranged between the voltage follower and the amplifier, and the signal output by the voltage follower is filtered by the filter and then enters the amplifier for amplification.
本发明采用以上技术方案与现有技术相比，具有以下技术效果：本发明在信号接收前端加入衰减器和放大器，对进入的信号进行前端处理，减少干扰信号的进入，保持信号的信噪比，提高信号的精确度，同时显示器带有触摸功能更加方便使用时的操作，提高操作效率，内部设置更加人性化，设计新颖，值得推广。同时，本发明采用叠层放大结构的设计，提高了放大器的输出功率，降低了电路的具体功耗。Compared with the prior art, the present invention adopts the above technical scheme and has the following technical effects: the present invention adds an attenuator and an amplifier at the front end of the signal receiving, performs front-end processing on the incoming signal, reduces the entry of interference signals, and maintains the signal-to-noise ratio of the signal , to improve the accuracy of the signal, and the display has a touch function to facilitate the operation during use, improve the operation efficiency, the internal settings are more humanized, and the design is novel, which is worth promoting. At the same time, the present invention adopts the design of the laminated amplification structure, which improves the output power of the amplifier and reduces the specific power consumption of the circuit.
附图说明Description of drawings
图1是本发明的电路模块连接示意图。Fig. 1 is a schematic diagram of circuit module connection of the present invention.
图2是本发明的放大器电路示意图，Fig. 2 is a schematic diagram of the amplifier circuit of the present invention,
其中：R1至R13分别为第一至第十三电阻，C1至C11分别为第一至第十一电容，D1至D3分别为第一至第三三极管。Wherein: R1 to R13 are the first to the thirteenth resistors respectively, C1 to C11 are the first to the eleventh capacitors respectively, and D1 to D3 are the first to the third triodes respectively.
具体实施方式detailed description
下面详细描述本发明的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本发明，而不能解释为对本发明的限制。Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
本技术领域技术人员可以理解的是，本发明中涉及到的相关模块及其实现的功能是在改进后的硬件及其构成的装置、器件或系统上搭载现有技术中常规的计算机软件程序或有关协议就可实现，并非是对现有技术中的计算机软件程序或有关协议进行改进。例如，改进后的计算机硬件系统依然可以通过装载现有的软件操作系统来实现该硬件系统的特定功能。因此，可以理解的是，本发明的创新之处在于对现有技术中硬件模块的改进及其连接组合关系，而非仅仅是对硬件模块中为实现有关功能而搭载的软件或协议的改进。Those skilled in the art can understand that the relevant modules involved in the present invention and the functions realized are carried out on the improved hardware and the device, device or system formed by it, by carrying conventional computer software programs in the prior art or The relevant agreement can be realized, and it is not an improvement on the computer software program or the relevant agreement in the prior art. For example, an improved computer hardware system can still realize specific functions of the hardware system by loading an existing software operating system. Therefore, it can be understood that the innovation of the present invention lies in the improvement of the hardware modules in the prior art and their connection and combination relationship, rather than just the improvement of the software or protocol carried by the hardware modules to realize related functions.
本技术领域技术人员可以理解的是，本发明中提到的相关模块是用于执行本申请中所述操作、方法、流程中的步骤、措施、方案中的一项或多项的硬件设备。所述硬件设备可以为所需的目的而专门设计和制造，或者也可以采用通用计算机中的已知设备或已知的其他硬件设备。所述通用计算机有存储在其内的程序选择性地激活或重构。Those skilled in the art can understand that the relevant modules mentioned in the present invention are hardware devices for executing one or more of the operations, methods, steps, measures, and solutions in the procedures described in the present application. The hardware devices may be specially designed and manufactured for the required purpose, or known devices in general-purpose computers or other known hardware devices may also be used. The general purpose computer has programs stored therein selectively activated or reconfigured.
本技术领域技术人员可以理解，除非特意声明，这里使用的单数形式“一”、“一个”、“所述”和“该”也可包括复数形式。应该进一步理解的是，本发明的说明书中使用的措辞“包括”是指存在所述特征、整数、步骤、操作、元件和/或组件，但是并不排除存在或添加一个或多个其他特征、整数、步骤、操作、元件、组件和/或它们的组。应该理解，当我们称元件被“连接”或“耦接”到另一元件时，它可以直接连接或耦接到其他元件，或者也可以存在中间元件。此外，这里使用的“连接”或“耦接”可以包括无线连接或耦接。这里使用的措辞“和/或”包括一个或更多个相关联的列出项的任一单元和全部组合。Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Additionally, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
本技术领域技术人员可以理解，除非另外定义，这里使用的所有术语(包括技术术语和科学术语)具有与本发明所属领域中的普通技术人员的一般理解相同的意义。还应该理解的是，诸如通用字典中定义的那些术语应该被理解为具有与现有技术的上下文中的意义一致的意义，并且除非像这里一样定义，不会用理想化或过于正式的含义来解释。Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.
下面结合附图对本发明的技术方案做进一步的详细说明：Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
本发明的电路模块连接示意图如图1所示，一种基于叠层放大结构电路设计的示波器，包括衰减器、电压跟随器、放大器、AD采样电路、控制器、触发电路、时钟模块、数据缓存器、显示器；The circuit module connection schematic diagram of the present invention is shown in Figure 1, an oscilloscope designed based on a laminated amplifying structure circuit, including an attenuator, a voltage follower, an amplifier, an AD sampling circuit, a controller, a trigger circuit, a clock module, and a data buffer device, display;
其中衰减器、电压跟随器、放大器、AD采样电路、数据缓存器、显示器依次相连，AD采样电路还分别与时钟模块、触发电路相连；所述触发电路分别与数据缓存器、控制器相连；Wherein the attenuator, the voltage follower, the amplifier, the AD sampling circuit, the data buffer, and the display are connected in sequence, and the AD sampling circuit is also connected with the clock module and the trigger circuit respectively; the trigger circuit is connected with the data buffer and the controller respectively;
输入信号进入衰减器，经由衰减器对信号的幅度进行衰减，衰减之后的信号进入电压跟随器后进入放大器进行信号增益放大，经过放大后的信号进入AD采样电路，AD采样电路对信号进行采样，进行采样后的信号存入数据缓存器，并通过显示器进行显示；The input signal enters the attenuator, and the amplitude of the signal is attenuated by the attenuator. The attenuated signal enters the voltage follower and then enters the amplifier for signal gain amplification. The amplified signal enters the AD sampling circuit, and the AD sampling circuit samples the signal. The sampled signal is stored in the data buffer and displayed on the display;
所述时钟模块为AD采样电路提供采样时钟，控制器控制触发电路启动AD采样电路和数据缓存器；The clock module provides a sampling clock for the AD sampling circuit, and the controller controls the trigger circuit to start the AD sampling circuit and the data buffer;
所述显示器为触摸屏，控制器内设有操作界面，通过显示屏显示，用于操作。The display is a touch screen, and the controller is provided with an operation interface, which is displayed on the display screen and used for operation.
所述电压跟随器和放大器之间还可设置滤波器，对信号进行滤波，滤除杂波的干扰，同时放大器之后也可同时或单独设置滤波器，放大后的信号中混入杂波信号，滤波器的滤波范围要设置的比较精确。A filter can also be set between the voltage follower and the amplifier to filter the signal and remove the interference of clutter. At the same time, a filter can also be set at the same time or separately after the amplifier, and the clutter signal is mixed into the amplified signal. The filtering range of the filter should be set more accurately.
本发明的放大器电路示意图如图2所示，所述放大器的具体电路结构包括第一至第十三电阻、第一至第十一电容、第一至第三三极管，其中，第三电容分别和第一电容的一端、第四电容的一端、第一三极管的基极相连接，第四电容的另一端经过第二电阻分别和第六电阻的一端、第三电阻的一端、第八电容的一端、第五电阻的一端、第七电阻的一端、第十三电阻的一端、第十二电阻的一端相连接，第一电容的另一端分别和第一电阻的一端、第十电阻的一端相连接，第一电阻的另一端经过第八电容和第六电阻的另一端相连接，第十电阻的另一端分别和第九电阻的一端、第七电容的一端相连接，第九电阻的另一端分别和第六电容的一端、第十一电阻的一端相连接，第十一电阻的另一端分别和第二三极管的发射极、第九电容的一端相连接，第六电容的另一端经过第八电阻分别和第二电容的一端、第四电阻的一端相连接，第二电容的另一端和第一三极管的发射极相连接，第四电阻的另一端和第八电容的另一端相连接，第一三极管的集电极分别和第三电阻的另一端、第五电容的一端相连接，第五电容的另一端和第二三极管的基极相连接，第二三极管的集电极和第五电阻的另一端相连接，第九电容的另一端分别和第七电阻的另一端、第三三极管的基极相连接，第三三极管的集电极和第十三电阻的另一端相连接，第七电容的另一端经过第十电容分别和第三三极管的发射极、第十一电容的一端相连接，第十一电容的另一端和第十二电阻的另一端相连。A schematic diagram of the amplifier circuit of the present invention is shown in Figure 2. The specific circuit structure of the amplifier includes first to thirteenth resistors, first to eleventh capacitors, and first to third triodes, wherein the third capacitor respectively connected to one end of the first capacitor, one end of the fourth capacitor, and the base of the first triode; the other end of the fourth capacitor is respectively connected to one end of the sixth resistor, one end of the third resistor, and the One end of the eighth capacitor, one end of the fifth resistor, one end of the seventh resistor, one end of the thirteenth resistor, and one end of the twelfth resistor are connected, and the other end of the first capacitor is respectively connected to one end of the first resistor and the tenth resistor The other end of the first resistor is connected to the other end of the sixth resistor through the eighth capacitor, the other end of the tenth resistor is respectively connected to one end of the ninth resistor and one end of the seventh capacitor, and the ninth resistor The other end of the sixth capacitor is connected to one end of the eleventh resistor, the other end of the eleventh resistor is respectively connected to the emitter of the second transistor and one end of the ninth capacitor, and the sixth capacitor The other end is respectively connected to one end of the second capacitor and one end of the fourth resistor through the eighth resistor, the other end of the second capacitor is connected to the emitter of the first triode, and the other end of the fourth resistor is connected to the eighth capacitor The other end of the first triode is connected with the other end of the third resistor and one end of the fifth capacitor respectively, the other end of the fifth capacitor is connected with the base of the second triode, the second The collector of the second transistor is connected to the other end of the fifth resistor, the other end of the ninth capacitor is connected to the other end of the seventh resistor and the base of the third transistor respectively, and the collector of the third transistor The electrodes are connected to the other end of the thirteenth resistor, the other end of the seventh capacitor is respectively connected to the emitter of the third transistor and one end of the eleventh capacitor through the tenth capacitor, and the other end of the eleventh capacitor is connected to the The other end of the twelfth resistor is connected to each other.
作为本发明的进一步优化方案，所述衰减器采用的芯片型号为HMC274，也可采用电阻搭设的衰减器，具体采用哪种方式可根据电路板的大小或者实现精度的要求来进行选择。As a further optimization scheme of the present invention, the chip type used in the attenuator is HMC274, and an attenuator built with resistors can also be used. The specific method can be selected according to the size of the circuit board or the requirement of the realization accuracy.
作为本发明的进一步优化方案，所述电压跟随器的芯片型号为LM358，电压跟随器，顾名思义，是实现输出电压跟随输入电压的变化的一类电子元件。也就是说，电压跟随器的电压放大倍数恒小于且接近1。电压跟随器的显著特点就是，输入阻抗高，而输出阻抗低，提高后端的负载能力，提高电路的运载能力。As a further optimization solution of the present invention, the chip model of the voltage follower is LM358. The voltage follower, as the name implies, is a type of electronic component that realizes the change of the output voltage following the input voltage. That is to say, the voltage amplification factor of the voltage follower is always smaller than and close to 1. The salient feature of the voltage follower is that the input impedance is high and the output impedance is low, which improves the load capacity of the back end and the carrying capacity of the circuit.
作为本发明的进一步优化方案，所述控制器采用单片机，所述单片机的型号为STC90C51。As a further optimization solution of the present invention, the controller adopts a single-chip microcomputer, and the model of the single-chip microcomputer is STC90C51.
作为本发明的进一步优化方案，所述时钟模块采用的芯片为DS1302，该芯片可直接与单片机相连，实现时钟，避免了以往的在单片机内部单独设置时钟的问题，出现问题便于查找。As a further optimization scheme of the present invention, the chip used in the clock module is DS1302, which can be directly connected to the single-chip microcomputer to realize the clock, avoiding the previous problem of separately setting the clock inside the single-chip microcomputer, and making it easy to find problems.
作为本发明的进一步优化方案，还包括键盘，所述键盘与控制器相连，本发明中的显示器有触屏操作功能，加入键盘后两者配合工作，使用时更加方便，提高操作效率，在一方出现问题时，有备选方案。As a further optimization scheme of the present invention, it also includes a keyboard, which is connected to the controller. The display in the present invention has a touch screen operation function. After adding the keyboard, the two cooperate to work, which is more convenient to use and improves operating efficiency. When something goes wrong, there are alternatives.
上面结合附图对本发明的实施方式作了详细说明，但是本发明并不限于上述实施方式，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下做出各种变化。以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案内容，依据本发明的技术实质，在本发明的精神和原则之内，对以上实施例所作的任何简单的修改、等同替换与改进等，均仍属于本发明技术方案的保护范围之内。The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and can also be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art. Variations. The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but as long as they do not depart from the technical solution of the present invention, according to the technical content of the present invention Within the spirit and principles of the present invention, any simple modifications, equivalent replacements and improvements made to the above embodiments still fall within the scope of protection of the technical solutions of the present invention.
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