CN106908641B - Signal measurement device and method - Google Patents

Signal measurement device and method Download PDF

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CN106908641B
CN106908641B CN201510976022.6A CN201510976022A CN106908641B CN 106908641 B CN106908641 B CN 106908641B CN 201510976022 A CN201510976022 A CN 201510976022A CN 106908641 B CN106908641 B CN 106908641B
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oscilloscope
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coil
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张瑞忠
王悦
王铁军
李维森
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Puyuan Jingdian Technology Co Ltd
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    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract

本发明提供了一种信号测量装置及方法,涉及示波器技术领域。信号测量装置包括:探头电路、信号发生器电路、测量电路以及示波器控制电路;探头电路包括第一耦合线圈、探头端线圈电路,第一耦合线圈与探头端线圈电路连接;信号发生器电路包括信号发生器、电阻Rs以及第二耦合线圈;第一耦合线圈和第二耦合线圈相互配合,进行耦合;测量电路的电压监测端连接电阻Rs的另一端以及第二耦合线圈的一端;测量电路的输出端与示波器控制电路连接。本发明解决了解决当前探头类型检测不准确,示波器所应用的探头与其不匹配,容易造成示波器的测量结果有误,且不能通过探头电路对示波器进行控制的问题。

Figure 201510976022

The invention provides a signal measurement device and method, which relate to the technical field of oscilloscopes. The signal measurement device includes: a probe circuit, a signal generator circuit, a measurement circuit and an oscilloscope control circuit; the probe circuit includes a first coupling coil and a probe end coil circuit, and the first coupling coil is connected to the probe end coil circuit; the signal generator circuit includes a signal generator, resistor Rs and second coupling coil; the first coupling coil and the second coupling coil cooperate with each other for coupling; the voltage monitoring end of the measuring circuit is connected to the other end of the resistor Rs and one end of the second coupling coil; the output of the measuring circuit The terminal is connected to the oscilloscope control circuit. The invention solves the problems that the current probe type detection is inaccurate, the probe applied by the oscilloscope does not match it, the measurement result of the oscilloscope is easy to be wrong, and the oscilloscope cannot be controlled by the probe circuit.

Figure 201510976022

Description

一种信号测量装置及方法A signal measuring device and method

技术领域technical field

本发明涉及示波器技术领域,尤其涉及一种信号测量装置及方法The invention relates to the technical field of oscilloscopes, and in particular to a signal measurement device and method

背景技术Background technique

当前,示波器探头是示波器使用过程中不可或缺的一部分,其主要作为承载信号传输的链路,将待测信号完整可靠的传输至示波器,以便于示波器进一步进行测量分析。目前,示波器探头按供电方式分可分为无源探头和有源探头。无源探头又分为无源低压探头、无源高压探头及低阻传输线探头等,有源探头又分为有源单端探头、有源差分探头、高压差分探头等。此外,在一些特殊应用下,还会使用到电流探头、近场探头、逻辑探头以及各类传感器(例如光、温度、振动)探头等。At present, the oscilloscope probe is an indispensable part of the use of the oscilloscope. It is mainly used as a link carrying the signal transmission, and transmits the signal to be measured to the oscilloscope completely and reliably, so that the oscilloscope can perform further measurement and analysis. At present, oscilloscope probes can be divided into passive probes and active probes according to the power supply mode. Passive probes are further divided into passive low-voltage probes, passive high-voltage probes and low-impedance transmission line probes, and active probes are further divided into active single-ended probes, active differential probes, and high-voltage differential probes. In addition, in some special applications, current probes, near-field probes, logic probes, and various sensor (such as light, temperature, vibration) probes are also used.

为了满足示波器在各种情况下的需求,以及不同示波器探头对示波器的测量结果存在影响。因此,对示波器探头的识别,以及选择合适探头对示波器进行控制等操作格外重要。当前对于探头类型的识别大多在于示波器连接的同轴电缆连接器(Bayonet NutConnector,简称BNC)端使用一个弹簧针连接一个特定阻值的电阻Rp到BNC的地端,当探头接入示波器时,特定阻值电阻Rp与示波器内部识别电路形成一个分压电路,通过测量分压后的电压值,从而能够确定不同电压值所对应的探头的类型。In order to meet the needs of the oscilloscope in various situations, and different oscilloscope probes have an impact on the measurement results of the oscilloscope. Therefore, it is very important to identify the oscilloscope probe and select the appropriate probe to control the oscilloscope. At present, most of the identification of probe types is that the coaxial cable connector (Bayonet NutConnector, BNC) end connected to the oscilloscope uses a pogo pin to connect a resistor Rp with a specific resistance value to the ground end of the BNC. When the probe is connected to the oscilloscope, the specific The resistance value resistor Rp and the internal identification circuit of the oscilloscope form a voltage divider circuit. By measuring the voltage value after the voltage division, the type of probe corresponding to different voltage values can be determined.

由于现有技术通过一个弹性端子与示波器连接后进行探头类型的识别,因此探头的接触可靠性成为探头能够正确识别的关键,特别是探头的探针在开始接触时,会由于弹簧针的弹性接触造成示波器内部探头识别电路读取一个错误的电压值,进而可能导致读取探头类型错误,进而造成获取的测量结果错误。另外,示波器探头端识别部分一般使用印制电路板(Printed Circuit Board,简称PCB电路板),在长时间的使用后,探头的弹簧接触部分的滑动磨损也会对探头的识别造成不利影响。可见,若示波器应用不匹配的探头,容易造成示波器测量结果错误,而且不能有效对示波器进行控制。Since the prior art identifies the probe type after connecting with the oscilloscope through an elastic terminal, the contact reliability of the probe becomes the key to the correct identification of the probe, especially when the probe of the probe starts to contact, it will be due to the elastic contact of the pogo pin. Causes the oscilloscope's internal probe identification circuit to read a wrong voltage value, which may result in the wrong probe type being read, resulting in incorrect measurement results. In addition, the identification part of the probe end of the oscilloscope generally uses a printed circuit board (Printed Circuit Board, PCB circuit board for short). After a long period of use, the sliding wear of the spring contact part of the probe will also adversely affect the identification of the probe. It can be seen that if the oscilloscope uses an unmatched probe, it is easy to cause errors in the measurement results of the oscilloscope, and the oscilloscope cannot be effectively controlled.

发明内容SUMMARY OF THE INVENTION

本发明的实施例提供一种信号测量装置及方法,以解决现有技术中,探头类型检测不准确,示波器所应用的探头与其不匹配,容易造成示波器的测量结果不准确,且不能通过探头电路对示波器进行控制的问题。The embodiments of the present invention provide a signal measurement device and method to solve the problem that in the prior art, the probe type detection is not accurate, and the probe applied by the oscilloscope does not match it, which easily causes the measurement result of the oscilloscope to be inaccurate and cannot pass through the probe circuit. Problems with controlling the oscilloscope.

为达到上述目的,本发明采用如下技术方案:To achieve the above object, the present invention adopts the following technical solutions:

一种信号测量装置,包括:探头电路、信号发生器电路、测量电路以及示波器控制电路;A signal measurement device, comprising: a probe circuit, a signal generator circuit, a measurement circuit and an oscilloscope control circuit;

所述探头电路包括第一耦合线圈、探头端线圈电路,所述第一耦合线圈与所述探头端线圈电路连接;The probe circuit includes a first coupling coil and a probe end coil circuit, and the first coupling coil is connected to the probe end coil circuit;

所述信号发生器电路包括信号发生器、电阻Rs以及第二耦合线圈;所述信号发生器的一端接地,所述信号发生器的另一端与所述电阻Rs的一端连接;所述电阻Rs的另一端与所述第二耦合线圈的一端连接;所述第二耦合线圈的另一端接地;The signal generator circuit includes a signal generator, a resistor Rs and a second coupling coil; one end of the signal generator is grounded, and the other end of the signal generator is connected to one end of the resistor Rs; The other end is connected to one end of the second coupling coil; the other end of the second coupling coil is grounded;

所述第一耦合线圈和第二耦合线圈相互配合,进行耦合;The first coupling coil and the second coupling coil cooperate with each other for coupling;

所述测量电路的电压监测端连接所述电阻Rs的另一端以及所述第二耦合线圈的一端;The voltage monitoring end of the measurement circuit is connected to the other end of the resistor Rs and one end of the second coupling coil;

所述测量电路的输出端与所述示波器控制电路连接。The output end of the measurement circuit is connected to the oscilloscope control circuit.

进一步的,所述探头端线圈电路包括一负载电阻,所述负载电阻的两端与所述第一耦合线圈两端连接。Further, the probe end coil circuit includes a load resistor, and both ends of the load resistor are connected to both ends of the first coupling coil.

进一步的,所述探头端线圈电路包括一可变电阻,所述可变电阻的一端与所述第一耦合线圈的一端连接;所述可变电阻的滑动端与所述第一耦合线圈的另一端连接。Further, the probe end coil circuit includes a variable resistor, one end of the variable resistor is connected to one end of the first coupling coil; the sliding end of the variable resistor is connected to the other end of the first coupling coil. connected at one end.

具体的,所述探头端线圈电路包括一负载电阻和一可调电容;所述负载电阻与所述可调电容并联连接在所述第一耦合线圈的两端。Specifically, the probe end coil circuit includes a load resistor and an adjustable capacitor; the load resistor and the adjustable capacitor are connected in parallel at both ends of the first coupling coil.

具体的,所述探头端线圈电路包括一负载电阻和一按键开关;所述按键开关与所述负载电阻并联连接在所述第一耦合线圈的两端。Specifically, the probe end coil circuit includes a load resistor and a key switch; the key switch and the load resistor are connected in parallel at both ends of the first coupling coil.

具体的,所述探头端线圈电路包括一多路开关结构;所述多路开关结构的不动端与所述第一耦合线圈的一端连接;所述多路开关结构的动端包括多个负载电阻;所述多个负载电阻的一端作为所述多路开关结构的动端,所述多个负载电阻的另一端共同连接所述第一耦合线圈的另一端。Specifically, the probe end coil circuit includes a multiplex switch structure; the stationary end of the multiplex switch structure is connected to one end of the first coupling coil; the movable end of the multiplex switch structure includes a plurality of loads resistors; one end of the multiple load resistors is used as the moving end of the multiplex switch structure, and the other ends of the multiple load resistors are commonly connected to the other end of the first coupling coil.

一种信号测量方法,应用于上述的信号测量装置;所述方法包括:A signal measurement method, applied to the above-mentioned signal measurement device; the method comprises:

控制信号发生器电路发出预设信号;The control signal generator circuit sends out a preset signal;

控制探头电路中的第一耦合线圈与信号发生器电路中的第二耦合线圈进行耦合;the first coupling coil in the control probe circuit is coupled with the second coupling coil in the signal generator circuit;

根据所述测量电路的电压监测端,实时获取所述电压监测端所检测到的电压信号;According to the voltage monitoring terminal of the measurement circuit, obtain the voltage signal detected by the voltage monitoring terminal in real time;

根据所述电压信号判断所述探头电路所属探头的类型;Determine the type of the probe to which the probe circuit belongs according to the voltage signal;

控制探头电路中的探头端线圈电路进行预设动作,以使得所述电压监测端所检测到的电压信号发生变化,生成电压信号变化信息;Controlling the coil circuit of the probe end in the probe circuit to perform a preset action, so that the voltage signal detected by the voltage monitoring end changes, and the voltage signal change information is generated;

根据所述电压信号变化信息,对所述示波器进行控制。The oscilloscope is controlled according to the change information of the voltage signal.

具体的,所述探头端线圈电路包括一负载电阻,所述负载电阻的两端与所述第一耦合线圈两端连接;Specifically, the probe end coil circuit includes a load resistor, and both ends of the load resistor are connected to both ends of the first coupling coil;

所述根据所述电压信号判断所述探头电路所属探头的类型,包括:The determining of the type of the probe to which the probe circuit belongs according to the voltage signal includes:

获取预先设置的探头类型列表;所述探头类型列表中记录有各种探头类型以及其对应的电压信号的电压值;Obtain a preset list of probe types; the probe type list records the voltage values of various probe types and their corresponding voltage signals;

获取所述电压信号的电压值,并根据所述电压值在所述探头类型列表中查询所述电压值对应的探头类型。Acquire the voltage value of the voltage signal, and query the probe type corresponding to the voltage value in the probe type list according to the voltage value.

具体的,所述探头端线圈电路包括一可变电阻,所述可变电阻的一端与所述第一耦合线圈的一端连接;所述可变电阻的滑动端与所述第一耦合线圈的另一端连接;Specifically, the probe end coil circuit includes a variable resistor, one end of the variable resistor is connected to one end of the first coupling coil; the sliding end of the variable resistor is connected to the other end of the first coupling coil one end connection;

控制探头电路中的探头端线圈电路进行预设动作,以使得所述电压监测端所检测到的电压信号发生变化,生成电压信号变化信息,包括:Control the probe end coil circuit in the probe circuit to perform preset actions, so that the voltage signal detected by the voltage monitoring end changes, and the voltage signal change information is generated, including:

控制所述可变电阻的滑动端进行滑动,以使得所述电压监测端所检测到的电压信号发生变化,生成电压信号变化信;controlling the sliding end of the variable resistor to slide, so that the voltage signal detected by the voltage monitoring end changes, and a voltage signal change signal is generated;

根据所述电压信号变化信息,对所述示波器进行控制,包括:Controlling the oscilloscope according to the voltage signal change information includes:

获取预先设置的示波器控制策略;所述预先设置的示波器控制策略包括各示波器控制动作及其对应的电压信号变化信息;Obtaining a preset oscilloscope control strategy; the preset oscilloscope control strategy includes each oscilloscope control action and its corresponding voltage signal change information;

根据所述电压信号变化信息,在所述示波器控制策略中获取所述电压信号变化信息对应的示波器控制动作;According to the voltage signal change information, obtain the oscilloscope control action corresponding to the voltage signal change information in the oscilloscope control strategy;

对所述示波器进行所述示波器控制动作。The oscilloscope control action is performed on the oscilloscope.

具体的,所述探头端线圈电路包括一负载电阻和一可调电容;所述负载电阻与所述可调电容并联连接在所述第一耦合线圈的两端Specifically, the probe end coil circuit includes a load resistor and an adjustable capacitor; the load resistor and the adjustable capacitor are connected in parallel at both ends of the first coupling coil

控制探头电路中的探头端线圈电路进行预设动作,以使得所述电压监测端所检测到的电压信号发生变化,生成电压信号变化信息,包括:Control the probe end coil circuit in the probe circuit to perform preset actions, so that the voltage signal detected by the voltage monitoring end changes, and the voltage signal change information is generated, including:

调节所述可变电容,以使得所述电压监测端所检测到的电压信号发生变化,生成电压信号变化信;adjusting the variable capacitor so that the voltage signal detected by the voltage monitoring terminal changes, and generating a voltage signal change signal;

根据所述电压信号变化信息,对所述示波器进行控制,包括:Controlling the oscilloscope according to the voltage signal change information includes:

获取预先设置的示波器控制策略;所述预先设置的示波器控制策略包括各示波器控制动作及其对应的电压信号变化信息;Obtaining a preset oscilloscope control strategy; the preset oscilloscope control strategy includes each oscilloscope control action and its corresponding voltage signal change information;

根据所述电压信号变化信息,在所述示波器控制策略中获取所述电压信号变化信息对应的示波器控制动作;According to the voltage signal change information, obtain the oscilloscope control action corresponding to the voltage signal change information in the oscilloscope control strategy;

对所述示波器进行所述示波器控制动作。The oscilloscope control action is performed on the oscilloscope.

具体的,所述探头端线圈电路包括一负载电阻和一按键开关;所述按键开关与所述负载电阻并联连接在所述第一耦合线圈的两端;Specifically, the probe end coil circuit includes a load resistor and a key switch; the key switch and the load resistor are connected in parallel at both ends of the first coupling coil;

控制探头电路中的探头端线圈电路进行预设动作,以使得所述电压监测端所检测到的电压信号发生变化,生成电压信号变化信息,包括:Control the probe end coil circuit in the probe circuit to perform preset actions, so that the voltage signal detected by the voltage monitoring end changes, and the voltage signal change information is generated, including:

将所述按键开关闭合,以使得所述电压监测端所检测到的电压信号发生变化,生成电压信号变化信;closing the key switch, so that the voltage signal detected by the voltage monitoring terminal changes, and a voltage signal change signal is generated;

根据所述电压信号变化信息,对所述示波器进行控制,包括:Controlling the oscilloscope according to the voltage signal change information includes:

获取预先设置的示波器控制策略;所述预先设置的示波器控制策略包括各示波器控制动作及其对应的电压信号变化信息;Obtaining a preset oscilloscope control strategy; the preset oscilloscope control strategy includes each oscilloscope control action and its corresponding voltage signal change information;

根据所述电压信号变化信息,在所述示波器控制策略中获取所述电压信号变化信息对应的示波器控制动作;According to the voltage signal change information, obtain the oscilloscope control action corresponding to the voltage signal change information in the oscilloscope control strategy;

对所述示波器进行所述示波器控制动作。The oscilloscope control action is performed on the oscilloscope.

具体的,所述探头端线圈电路包括一多路开关结构;所述多路开关结构的不动端与所述第一耦合线圈的一端连接;所述多路开关结构的动端包括多个负载电阻;所述多个负载电阻的一端作为所述多路开关结构的动端,所述多个负载电阻的另一端共同连接所述第一耦合线圈的另一端;Specifically, the probe end coil circuit includes a multiplex switch structure; the stationary end of the multiplex switch structure is connected to one end of the first coupling coil; the movable end of the multiplex switch structure includes a plurality of loads resistors; one end of the multiple load resistors is used as the moving end of the multiplex switch structure, and the other ends of the multiple load resistors are commonly connected to the other end of the first coupling coil;

控制探头电路中的探头端线圈电路进行预设动作,以使得所述电压监测端所检测到的电压信号发生变化,生成电压信号变化信息,包括:Control the probe end coil circuit in the probe circuit to perform preset actions, so that the voltage signal detected by the voltage monitoring end changes, and the voltage signal change information is generated, including:

控制所述动端连接多个负载电阻中的不同电阻,以使得所述电压监测端所检测到的电压信号发生变化,生成电压信号变化信;controlling the moving end to connect different resistances among the plurality of load resistances, so that the voltage signal detected by the voltage monitoring end changes, and a voltage signal change signal is generated;

根据所述电压信号变化信息,对所述示波器进行控制,包括:Controlling the oscilloscope according to the voltage signal change information includes:

获取预先设置的示波器控制策略;所述预先设置的示波器控制策略包括各示波器控制动作及其对应的电压信号变化信息;Obtaining a preset oscilloscope control strategy; the preset oscilloscope control strategy includes each oscilloscope control action and its corresponding voltage signal change information;

根据所述电压信号变化信息,在所述示波器控制策略中获取所述电压信号变化信息对应的示波器控制动作;According to the voltage signal change information, obtain the oscilloscope control action corresponding to the voltage signal change information in the oscilloscope control strategy;

对所述示波器进行所述示波器控制动作。The oscilloscope control action is performed on the oscilloscope.

本发明实施例提供的一种信号测量装置及方法,该信号测量装置包括:探头电路、信号发生器电路、测量电路以及示波器控制电路;所述探头电路包括第一耦合线圈、探头端线圈电路,所述第一耦合线圈与所述探头端线圈电路连接;所述信号发生器电路包括信号发生器、电阻Rs以及第二耦合线圈;所述第一耦合线圈和第二耦合线圈相互配合,进行耦合;所述测量电路的电压监测端连接所述电阻Rs的另一端以及所述第二耦合线圈的一端;所述测量电路的输出端与所述示波器控制电路连接。通过上述信号测量装置,可以通过控制信号发生器电路发出预设信号;进而控制探头电路中的第一耦合线圈与信号发生器电路中的第二耦合线圈进行耦合;从而根据所述测量电路的电压监测端,实时获取所述电压监测端所检测到的电压信号;进而根据所述电压信号判断所述探头电路所属探头的类型;并控制探头电路中的探头端线圈电路进行预设动作,以使得所述电压监测端所检测到的电压信号发生变化,生成电压信号变化信息;从而根据所述电压信号变化信息,对所述示波器进行控制。可见,本发明在确定探头类型时,无需将探头通过弹性端子与示波器连接,而是采用线圈耦合的方式,避免了端子与示波器接触容易产生错误电压值,造成探头识别不准确的问题。同时,通过该信号测量装置还可以实现对示波器的控制。An embodiment of the present invention provides a signal measurement device and method. The signal measurement device includes: a probe circuit, a signal generator circuit, a measurement circuit, and an oscilloscope control circuit; the probe circuit includes a first coupling coil and a probe end coil circuit, The first coupling coil is connected to the probe end coil circuit; the signal generator circuit includes a signal generator, a resistor Rs and a second coupling coil; the first coupling coil and the second coupling coil cooperate with each other for coupling ; The voltage monitoring end of the measuring circuit is connected to the other end of the resistor Rs and one end of the second coupling coil; the output end of the measuring circuit is connected to the oscilloscope control circuit. Through the above-mentioned signal measurement device, a preset signal can be sent by controlling the signal generator circuit; then the first coupling coil in the probe circuit is controlled to be coupled with the second coupling coil in the signal generator circuit; thus according to the voltage of the measurement circuit The monitoring terminal obtains the voltage signal detected by the voltage monitoring terminal in real time; then judges the type of the probe to which the probe circuit belongs according to the voltage signal; and controls the probe terminal coil circuit in the probe circuit to perform preset actions, so as to make The voltage signal detected by the voltage monitoring terminal changes, and voltage signal change information is generated; thus, the oscilloscope is controlled according to the voltage signal change information. It can be seen that the invention does not need to connect the probe to the oscilloscope through the elastic terminal when determining the probe type, but adopts the method of coil coupling, which avoids the problem that the terminal and the oscilloscope are easily contacted to generate wrong voltage values, resulting in inaccurate probe identification. At the same time, the oscilloscope can also be controlled by the signal measuring device.

附图说明Description of drawings

为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

图1为本发明实施例提供的一种信号测量装置的结构示意图一;FIG. 1 is a schematic structural diagram 1 of a signal measurement apparatus provided by an embodiment of the present invention;

图2为本发明实施例提供的一种信号测量装置的结构示意图二;FIG. 2 is a second schematic structural diagram of a signal measurement device provided by an embodiment of the present invention;

图3为本发明实施例提供的一种信号测量装置的结构示意图三;FIG. 3 is a third structural schematic diagram of a signal measurement device provided by an embodiment of the present invention;

图4为本发明实施例提供的一种信号测量装置的结构示意图四;FIG. 4 is a fourth schematic structural diagram of a signal measurement apparatus provided by an embodiment of the present invention;

图5为本发明实施例提供的一种信号测量装置的结构示意图五;FIG. 5 is a schematic structural diagram 5 of a signal measurement device provided by an embodiment of the present invention;

图6为本发明实施例提供的一种信号测量装置的结构示意图六;FIG. 6 is a sixth schematic structural diagram of a signal measurement device provided by an embodiment of the present invention;

图7为本发明实施例提供的一种信号测量方法的流程图。FIG. 7 is a flowchart of a signal measurement method provided by an embodiment of the present invention.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

本发明实施例提供一种信号测量装置,如图1所示,该信号测量装置10包括:探头电路101、信号发生器电路102、测量电路103以及示波器控制电路104。An embodiment of the present invention provides a signal measurement device. As shown in FIG. 1 , the signal measurement device 10 includes a probe circuit 101 , a signal generator circuit 102 , a measurement circuit 103 , and an oscilloscope control circuit 104 .

该探头电路101包括第一耦合线圈105、探头端线圈电路106,该第一耦合线圈105与探头端线圈电路106连接。The probe circuit 101 includes a first coupling coil 105 and a probe end coil circuit 106 , and the first coupling coil 105 is connected to the probe end coil circuit 106 .

信号发生器电路102包括信号发生器107、电阻Rs108以及第二耦合线圈109;信号发生器102的一端接地,另一端与电阻Rs108的一端连接;电阻Rs108的另一端与第二耦合线圈109的一端连接;第二耦合线圈109的另一端接地。The signal generator circuit 102 includes a signal generator 107, a resistor Rs108 and a second coupling coil 109; one end of the signal generator 102 is grounded, and the other end is connected to one end of the resistor Rs108; the other end of the resistor Rs108 is connected to one end of the second coupling coil 109 Connection; the other end of the second coupling coil 109 is grounded.

第一耦合线圈105和第二耦合线圈109相互配合,进行耦合。The first coupling coil 105 and the second coupling coil 109 cooperate with each other for coupling.

测量电路103的电压监测端1031连接电阻Rs108的另一端以及第二耦合线圈109的一端。The voltage monitoring end 1031 of the measuring circuit 103 is connected to the other end of the resistor Rs108 and one end of the second coupling coil 109 .

测量电路103的输出端1032与示波器控制电路104连接。此处的测量电路可以包括运算放大器或者均方根值(Root Mean Square,RMS)测量芯片等。The output terminal 1032 of the measurement circuit 103 is connected to the oscilloscope control circuit 104 . The measurement circuit here may include an operational amplifier or a root mean square (Root Mean Square, RMS) measurement chip or the like.

进一步的,如图2所示,该探头端线圈电路106可以包括一负载电阻110,负载电阻110的两端与第一耦合线圈105两端连接。Further, as shown in FIG. 2 , the probe end coil circuit 106 may include a load resistor 110 , and both ends of the load resistor 110 are connected to both ends of the first coupling coil 105 .

另外,如图3所示,该探头端线圈电路106可以包括一可变电阻111,可变电阻111的一端与第一耦合线圈105的一端连接;可变电阻111的滑动端与第一耦合线圈105的另一端连接。In addition, as shown in FIG. 3, the probe end coil circuit 106 may include a variable resistor 111, one end of the variable resistor 111 is connected to one end of the first coupling coil 105; the sliding end of the variable resistor 111 is connected to the first coupling coil The other end of 105 is connected.

此外,如图4所示,该探头端线圈电路106可以包括一负载电阻112和一可调电容113。负载电阻112与可调电容113并联连接在第一耦合线圈105的两端。In addition, as shown in FIG. 4 , the probe end coil circuit 106 may include a load resistor 112 and an adjustable capacitor 113 . The load resistor 112 and the adjustable capacitor 113 are connected in parallel at both ends of the first coupling coil 105 .

另外,如图5所示,探头端线圈电路106可以包括一负载电阻114和一按键开关115;按键开关115与负载电阻114并联连接在第一耦合线圈105的两端。In addition, as shown in FIG. 5 , the probe end coil circuit 106 may include a load resistor 114 and a key switch 115 ; the key switch 115 and the load resistor 114 are connected in parallel at both ends of the first coupling coil 105 .

另外,如图6所示,探头端线圈电路106可以包括一多路开关结构116。多路开关结构116的不动端与第一耦合线圈105的一端连接。多路开关结构116的动端包括多个负载电阻117。多个负载电阻117的一端作为多路开关结构116的动端,多个负载电阻117的另一端共同连接第一耦合线圈105的另一端。Additionally, as shown in FIG. 6 , the probe tip coil circuit 106 may include a multiplexer structure 116 . The stationary end of the multiplexer structure 116 is connected to one end of the first coupling coil 105 . The moving end of the multiplexer structure 116 includes a plurality of load resistors 117 . One end of the plurality of load resistors 117 serves as the moving end of the multiplex switch structure 116 , and the other ends of the plurality of load resistors 117 are commonly connected to the other end of the first coupling coil 105 .

本发明实施例提供的一种信号测量装置,该信号测量装置包括:探头电路、信号发生器电路、测量电路以及示波器控制电路;探头电路包括第一耦合线圈、探头端线圈电路,第一耦合线圈与探头端线圈电路连接;信号发生器电路包括信号发生器、电阻Rs以及第二耦合线圈;第一耦合线圈和第二耦合线圈相互配合,进行耦合;测量电路的电压监测端连接电阻Rs的另一端以及第二耦合线圈的一端;测量电路的输出端与示波器控制电路连接。通过上述信号测量装置,可以通过控制信号发生器电路发出预设信号;进而控制探头电路中的第一耦合线圈与信号发生器电路中的第二耦合线圈进行耦合;从而根据测量电路的电压监测端,实时获取电压监测端所检测到的电压信号;进而根据电压信号判断探头电路所属探头的类型;并控制探头电路中的探头端线圈电路进行预设动作,以使得电压监测端所检测到的电压信号发生变化,生成电压信号变化信息;从而根据电压信号变化信息,对示波器进行控制。可见,本发明在确定探头类型时,无需将探头通过弹性端子与示波器连接,而是采用线圈耦合的方式,避免了端子与示波器接触容易产生错误电压值,造成探头识别不准确的问题。同时,通过该信号测量装置还可以实现对示波器的控制。A signal measurement device provided by an embodiment of the present invention includes: a probe circuit, a signal generator circuit, a measurement circuit, and an oscilloscope control circuit; the probe circuit includes a first coupling coil, a probe end coil circuit, and a first coupling coil It is connected with the coil circuit of the probe end; the signal generator circuit includes a signal generator, a resistor Rs and a second coupling coil; the first coupling coil and the second coupling coil cooperate with each other for coupling; the voltage monitoring end of the measuring circuit is connected to the other side of the resistor Rs. One end and one end of the second coupling coil; the output end of the measuring circuit is connected with the oscilloscope control circuit. Through the above-mentioned signal measuring device, a preset signal can be sent by controlling the signal generator circuit; then the first coupling coil in the probe circuit is controlled to be coupled with the second coupling coil in the signal generator circuit; thus, according to the voltage monitoring terminal of the measuring circuit , obtain the voltage signal detected by the voltage monitoring terminal in real time; then determine the type of the probe to which the probe circuit belongs according to the voltage signal; and control the probe terminal coil circuit in the probe circuit to perform preset actions, so that the voltage detected by the voltage monitoring terminal is The signal changes to generate voltage signal change information; thus, the oscilloscope is controlled according to the voltage signal change information. It can be seen that the invention does not need to connect the probe to the oscilloscope through the elastic terminal when determining the probe type, but adopts the method of coil coupling, which avoids the problem that the terminal and the oscilloscope are easily contacted to generate wrong voltage values, resulting in inaccurate probe identification. At the same time, the oscilloscope can also be controlled by the signal measuring device.

对应于上述的信号测量装置,本发明还提供一种信号测量方法,应用于上述的信号测量装置。如图7所示,该信号测量方法包括:Corresponding to the above signal measurement device, the present invention also provides a signal measurement method, which is applied to the above signal measurement device. As shown in Figure 7, the signal measurement method includes:

步骤201、控制信号发生器电路发出预设信号。Step 201: Control the signal generator circuit to send out a preset signal.

此处的预设信号可以是信号发生器发出的正弦波、方波或者脉冲信号等。此处,为了使得测量电路测得的结果更为准确,需要根据探头端线圈电路处的不同结构,选择合适的信号频率。The preset signal here may be a sine wave, a square wave, or a pulse signal sent by a signal generator. Here, in order to make the result measured by the measurement circuit more accurate, it is necessary to select an appropriate signal frequency according to the different structures of the coil circuit at the probe end.

步骤202、控制探头电路中的第一耦合线圈与信号发生器电路中的第二耦合线圈进行耦合。Step 202: Control the first coupling coil in the probe circuit to couple with the second coupling coil in the signal generator circuit.

步骤203、根据测量电路的电压监测端,实时获取电压监测端所检测到的电压信号。Step 203: Acquire the voltage signal detected by the voltage monitoring terminal in real time according to the voltage monitoring terminal of the measurement circuit.

步骤204、根据电压信号判断探头电路所属探头的类型。Step 204: Determine the type of the probe to which the probe circuit belongs according to the voltage signal.

此处,如图2所示,当探头端线圈电路包括一负载电阻,负载电阻的两端与第一耦合线圈两端连接时,可以获取预先设置的探头类型列表;探头类型列表中记录有各种探头类型以及其对应的电压信号的电压值;之后,获取电压信号的电压值,并根据电压值在探头类型列表中查询电压值对应的探头类型。Here, as shown in Figure 2, when the coil circuit at the probe end includes a load resistor, and both ends of the load resistor are connected to both ends of the first coupling coil, a preset list of probe types can be obtained; Then, obtain the voltage value of the voltage signal, and query the probe type corresponding to the voltage value in the probe type list according to the voltage value.

例如,在探头类型列表中记录有探头类型有类型一、类型二、类型三;这三种类型的探头可以分别对应电压信号的电压值为1V至2V、2V至3V和3V至4V。该探头类型列表可以通过配置寄存器的参数的方式配置。For example, the probe types recorded in the probe type list include type 1, type 2, and type 3; these three types of probes can respectively correspond to voltage values of 1V to 2V, 2V to 3V, and 3V to 4V. The probe type list can be configured by configuring the parameters of the register.

步骤205、控制探头电路中的探头端线圈电路进行预设动作,以使得电压监测端所检测到的电压信号发生变化,生成电压信号变化信息。Step 205: Control the coil circuit of the probe end in the probe circuit to perform a preset action, so that the voltage signal detected by the voltage monitoring end changes, and voltage signal change information is generated.

此处的预设动作可以是如图3所示,控制可变电阻的滑动端进行滑动。还可以是如图4所示,调节可变电容。或者还可以是如图5所示的,将按键开关闭合。又或者是如图6所示,控制多路开关结构的动端连接多个负载电阻中的不同电阻。由于探头端线圈电路中的电阻值由于上述预设动作而发生改变,通过耦合线圈耦合到信号发生器电路,从而使得电压监测端所检测到的电压信号发生变化。The preset action here may be, as shown in FIG. 3 , controlling the sliding end of the variable resistor to slide. Alternatively, as shown in FIG. 4 , the variable capacitance can be adjusted. Alternatively, as shown in FIG. 5 , the key switch may be closed. Alternatively, as shown in FIG. 6 , the moving end of the control multiplexer structure is connected to different resistances among the plurality of load resistances. Since the resistance value in the coil circuit of the probe end changes due to the above preset action, it is coupled to the signal generator circuit through the coupling coil, so that the voltage signal detected by the voltage monitoring end changes.

步骤206、根据电压信号变化信息,对示波器进行控制。Step 206 , control the oscilloscope according to the change information of the voltage signal.

此处,根据电压信号变化信息,对示波器进行控制可以获取预先设置的示波器控制策略;预先设置的示波器控制策略包括各示波器控制动作及其对应的电压信号变化信息;之后,根据电压信号变化信息,在示波器控制策略中获取电压信号变化信息对应的示波器控制动作;对示波器进行示波器控制动作。Here, a preset oscilloscope control strategy can be obtained by controlling the oscilloscope according to the voltage signal change information; the preset oscilloscope control strategy includes each oscilloscope control action and its corresponding voltage signal change information; after that, according to the voltage signal change information, The oscilloscope control action corresponding to the voltage signal change information is obtained in the oscilloscope control strategy; the oscilloscope control action is performed on the oscilloscope.

例如,当电压从1V连续增加到2V时,可以调节示波器的垂直档位从-5V/DIV连续调整到+5V/DIV。此外,示波器控制动作还有很多,例如自动归零、自动测量等,但不仅仅局限于此。For example, when the voltage is continuously increased from 1V to 2V, the vertical scale of the oscilloscope can be adjusted continuously from -5V/DIV to +5V/DIV. In addition, there are many oscilloscope control actions, such as automatic zeroing, automatic measurement, etc., but not limited to this.

本发明实施例提供的一种信号测量方法,可以通过控制信号发生器电路发出预设信号;进而控制探头电路中的第一耦合线圈与信号发生器电路中的第二耦合线圈进行耦合;从而根据测量电路的电压监测端,实时获取电压监测端所检测到的电压信号;进而根据电压信号判断探头电路所属探头的类型;并控制探头电路中的探头端线圈电路进行预设动作,以使得电压监测端所检测到的电压信号发生变化,生成电压信号变化信息;从而根据电压信号变化信息,对示波器进行控制。可见,本发明在确定探头类型时,无需将探头通过弹性端子与示波器连接,而是采用线圈耦合的方式,避免了端子与示波器接触容易产生错误电压值,造成探头识别不准确的问题。同时,通过该信号测量装置还可以实现对示波器的控制。In a signal measurement method provided by an embodiment of the present invention, a preset signal can be sent by controlling a signal generator circuit; further, the first coupling coil in the probe circuit is controlled to be coupled with the second coupling coil in the signal generator circuit; Measure the voltage monitoring end of the circuit, obtain the voltage signal detected by the voltage monitoring end in real time; then determine the type of probe to which the probe circuit belongs according to the voltage signal; and control the probe end coil circuit in the probe circuit to perform preset actions, so that the voltage monitoring The voltage signal detected by the terminal changes, and the voltage signal change information is generated; thus, the oscilloscope is controlled according to the voltage signal change information. It can be seen that the invention does not need to connect the probe to the oscilloscope through the elastic terminal when determining the probe type, but adopts the method of coil coupling, which avoids the problem that the terminal and the oscilloscope are easily contacted to generate wrong voltage values, resulting in inaccurate probe identification. At the same time, the oscilloscope can also be controlled by the signal measuring device.

本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

本发明中应用了具体实施例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。In the present invention, the principles and implementations of the present invention are described by using specific embodiments, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention; The idea of the invention will have changes in the specific implementation and application scope. To sum up, the content of this specification should not be construed as a limitation to the present invention.

Claims (12)

1. A signal measurement device, comprising: the device comprises a probe circuit, a signal generator circuit, a measuring circuit and an oscilloscope control circuit;
the probe circuit comprises a first coupling coil and a probe end coil circuit, and the first coupling coil is connected with the probe end coil circuit;
the signal generator circuit comprises a signal generator, a resistor Rs and a second coupling coil; one end of the signal generator is grounded, and the other end of the signal generator is connected with one end of the resistor Rs; the other end of the resistor Rs is connected with one end of the second coupling coil; the other end of the second coupling coil is grounded;
the first coupling coil and the second coupling coil are matched with each other for coupling;
the voltage monitoring end of the measuring circuit is connected with the other end of the resistor Rs and one end of the second coupling coil;
and the output end of the measuring circuit is connected with the oscilloscope control circuit.
2. The signal measurement device of claim 1, wherein the probe end coil circuit includes a load resistor, and wherein two ends of the load resistor are connected to two ends of the first coupling coil.
3. The signal measurement device of claim 1, wherein the probe end coil circuit includes a variable resistor having one end connected to one end of the first coupling coil; and the sliding end of the variable resistor is connected with the other end of the first coupling coil.
4. The signal measurement device of claim 1, wherein the probe end coil circuit comprises a load resistor and an adjustable capacitor; and the load resistor and the adjustable capacitor are connected in parallel at two ends of the first coupling coil.
5. The signal measuring device of claim 1, wherein the probe end coil circuit comprises a load resistor and a push button switch; the key switch and the load resistor are connected in parallel at two ends of the first coupling coil.
6. The signal measurement device of claim 1, wherein the probe end coil circuit comprises a multi-way switch structure; the fixed end of the multi-way switch structure is connected with one end of the first coupling coil; the movable end of the multi-way switch structure comprises a plurality of load resistors; one ends of the load resistors are used as moving ends of the multi-way switch structure, and the other ends of the load resistors are connected with the other end of the first coupling coil.
7. A signal measurement method applied to the signal measurement apparatus according to claim 1; the method comprises the following steps:
the control signal generator circuit sends out a preset signal;
controlling a first coupling coil in the probe circuit to be coupled with a second coupling coil in the signal generator circuit;
acquiring a voltage signal detected by a voltage monitoring end in real time according to the voltage monitoring end of the measuring circuit;
judging the type of the probe to which the probe circuit belongs according to the voltage signal;
controlling a probe end coil circuit in a probe circuit to perform a preset action so as to change a voltage signal detected by the voltage monitoring end and generate voltage signal change information;
and controlling the oscilloscope according to the voltage signal change information.
8. The signal measurement method of claim 7, wherein the probe end coil circuit comprises a load resistor, and two ends of the load resistor are connected with two ends of the first coupling coil;
the judging the type of the probe to which the probe circuit belongs according to the voltage signal comprises the following steps:
acquiring a preset probe type list; various probe types and voltage values of voltage signals corresponding to the probe types are recorded in the probe type list;
and acquiring a voltage value of the voltage signal, and inquiring a probe type corresponding to the voltage value in the probe type list according to the voltage value.
9. The signal measurement method of claim 7, wherein the probe end coil circuit comprises a variable resistor, one end of the variable resistor being connected to one end of the first coupling coil; the sliding end of the variable resistor is connected with the other end of the first coupling coil;
control probe end coil circuit among the probe circuit and predetermine the action to make the voltage signal that voltage monitoring end detected changes, generates voltage signal change information, includes:
controlling the sliding end of the variable resistor to slide so that the voltage signal detected by the voltage monitoring end changes and generates a voltage signal change signal;
controlling the oscilloscope according to the voltage signal change information, comprising the following steps:
acquiring a preset oscilloscope control strategy; the preset oscilloscope control strategy comprises oscilloscope control actions and voltage signal change information corresponding to the oscilloscope control actions;
acquiring oscilloscope control actions corresponding to the voltage signal change information in the oscilloscope control strategy according to the voltage signal change information;
and performing the oscilloscope control action on the oscilloscope.
10. The signal measurement method of claim 7, wherein the probe end coil circuit comprises a load resistor and an adjustable capacitor; the load resistor and the adjustable capacitor are connected in parallel at two ends of the first coupling coil
Control probe end coil circuit among the probe circuit and predetermine the action to make the voltage signal that voltage monitoring end detected changes, generates voltage signal change information, includes:
adjusting the adjustable capacitor to enable the voltage signal detected by the voltage monitoring end to change and generate a voltage signal change signal;
controlling the oscilloscope according to the voltage signal change information, comprising the following steps:
acquiring a preset oscilloscope control strategy; the preset oscilloscope control strategy comprises oscilloscope control actions and voltage signal change information corresponding to the oscilloscope control actions;
acquiring oscilloscope control actions corresponding to the voltage signal change information in the oscilloscope control strategy according to the voltage signal change information;
and performing the oscilloscope control action on the oscilloscope.
11. The signal measurement method of claim 7, wherein the probe end coil circuit comprises a load resistor and a push button switch; the key switch and the load resistor are connected to two ends of the first coupling coil in parallel;
control probe end coil circuit among the probe circuit and predetermine the action to make the voltage signal that voltage monitoring end detected changes, generates voltage signal change information, includes:
closing the key switch to enable the voltage signal detected by the voltage monitoring end to change and generate a voltage signal change signal;
controlling the oscilloscope according to the voltage signal change information, comprising the following steps:
acquiring a preset oscilloscope control strategy; the preset oscilloscope control strategy comprises oscilloscope control actions and voltage signal change information corresponding to the oscilloscope control actions;
acquiring oscilloscope control actions corresponding to the voltage signal change information in the oscilloscope control strategy according to the voltage signal change information;
and performing the oscilloscope control action on the oscilloscope.
12. The signal measurement method of claim 7, wherein the probe end coil circuit comprises a multi-way switch structure; the fixed end of the multi-way switch structure is connected with one end of the first coupling coil; the movable end of the multi-way switch structure comprises a plurality of load resistors; one ends of the load resistors are used as the moving ends of the multi-way switch structure, and the other ends of the load resistors are connected with the other end of the first coupling coil together;
control probe end coil circuit among the probe circuit and predetermine the action to make the voltage signal that voltage monitoring end detected changes, generates voltage signal change information, includes:
controlling the movable end to be connected with different resistors in a plurality of load resistors so as to change the voltage signal detected by the voltage monitoring end and generate a voltage signal change signal;
controlling the oscilloscope according to the voltage signal change information, comprising the following steps:
acquiring a preset oscilloscope control strategy; the preset oscilloscope control strategy comprises oscilloscope control actions and voltage signal change information corresponding to the oscilloscope control actions;
acquiring oscilloscope control actions corresponding to the voltage signal change information in the oscilloscope control strategy according to the voltage signal change information;
and performing the oscilloscope control action on the oscilloscope.
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