CN106908641B - Signal measurement device and method - Google Patents

Abstract

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.

Description

A signal measuring device and method

technical field

The invention relates to the technical field of oscilloscopes, and in particular to a signal measurement device and method

Background technique

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.

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.

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.

SUMMARY OF THE INVENTION

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.

To achieve the above object, the present invention adopts the following technical solutions:

A signal measurement device, comprising: 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, 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;

The first coupling coil and the second coupling coil cooperate with each other for coupling;

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;

The output end of the measurement circuit is connected to the oscilloscope control circuit.

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.

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.

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.

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.

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.

A signal measurement method, applied to the above-mentioned signal measurement device; the method comprises:

The control signal generator circuit sends out a preset signal;

the first coupling coil in the control probe circuit is coupled with the second coupling coil in the signal generator circuit;

According to the voltage monitoring terminal of the measurement circuit, obtain the voltage signal detected by the voltage monitoring terminal in real time;

Determine the type of the probe to which the probe circuit belongs according to the voltage signal;

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;

The oscilloscope is controlled according to the change information of the voltage signal.

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;

The determining of the type of the probe to which the probe circuit belongs according to the voltage signal includes:

Obtain a preset list of probe types; the probe type list records the voltage values of various probe types and their corresponding voltage signals;

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.

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;

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:

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;

Controlling the oscilloscope according to the voltage signal change information includes:

Obtaining a preset oscilloscope control strategy; the preset oscilloscope control strategy includes each oscilloscope control action and its corresponding voltage signal change information;

According to the voltage signal change information, obtain the oscilloscope control action corresponding to the voltage signal change information in the oscilloscope control strategy;

The oscilloscope control action is performed on the oscilloscope.

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

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:

adjusting the variable capacitor so that the voltage signal detected by the voltage monitoring terminal changes, and generating a voltage signal change signal;

Controlling the oscilloscope according to the voltage signal change information includes:

Obtaining a preset oscilloscope control strategy; the preset oscilloscope control strategy includes each oscilloscope control action and its corresponding voltage signal change information;

According to the voltage signal change information, obtain the oscilloscope control action corresponding to the voltage signal change information in the oscilloscope control strategy;

The oscilloscope control action is performed on the oscilloscope.

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;

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:

closing the key switch, so that the voltage signal detected by the voltage monitoring terminal changes, and a voltage signal change signal is generated;

Controlling the oscilloscope according to the voltage signal change information includes:

Obtaining a preset oscilloscope control strategy; the preset oscilloscope control strategy includes each oscilloscope control action and its corresponding voltage signal change information;

According to the voltage signal change information, obtain the oscilloscope control action corresponding to the voltage signal change information in the oscilloscope control strategy;

The oscilloscope control action is performed on the oscilloscope.

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;

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:

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;

Controlling the oscilloscope according to the voltage signal change information includes:

Obtaining a preset oscilloscope control strategy; the preset oscilloscope control strategy includes each oscilloscope control action and its corresponding voltage signal change information;

According to the voltage signal change information, obtain the oscilloscope control action corresponding to the voltage signal change information in the oscilloscope control strategy;

The oscilloscope control action is performed on the oscilloscope.

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.

Description of drawings

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.

FIG. 1 is a schematic structural diagram 1 of a signal measurement apparatus provided by an embodiment of the present invention;

FIG. 2 is a second schematic structural diagram of a signal measurement device provided by an embodiment of the present invention;

FIG. 3 is a third structural schematic diagram of a signal measurement device provided by an embodiment of the present invention;

FIG. 4 is a fourth schematic structural diagram of a signal measurement apparatus provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram 5 of a signal measurement device provided by an embodiment of the present invention;

FIG. 6 is a sixth schematic structural diagram of a signal measurement device provided by an embodiment of the present invention;

FIG. 7 is a flowchart of a signal measurement method provided by an embodiment of the present invention.

Detailed ways

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.

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 .

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 .

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.

The first coupling coil 105 and the second coupling coil 109 cooperate with each other for coupling.

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 .

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.

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 .

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.

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 .

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 .

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 .

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.

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:

Step 201: Control the signal generator circuit to send out a preset signal.

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.

Step 202: Control the first coupling coil in the probe circuit to couple with the second coupling coil in the signal generator circuit.

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.

Step 204: Determine the type of the probe to which the probe circuit belongs according to the voltage signal.

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.

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.

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.

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.

Step 206 , control the oscilloscope according to the change information of the voltage signal.

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.

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.

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.

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.

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.

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.

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.

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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