阅读说明：本技术 配用电通信的测试系统及测试方法 (Testing system and testing method for power distribution and utilization communication ) 是由 施展 曾瑛 张正峰 付佳佳 梁宇图 卢建刚 于 2021-09-29 设计创作，主要内容包括：本申请公开了配用电通信的测试系统及测试方法,测试系统包括：客户端；服务器终端,包括互不连接的第一服务器机组和第二服务器机组；第二服务器机组与客户端进行无线电信号连接；第一服务器机组与客户端进行有线电信号连接；载波通信电力线,用于连接客户端和服务器终端,载波通信电力线能够加载干扰源以引入噪声；本申请通过PLC设备判断载波通信电力线上的指标的变化程度是否大于预设数值；以及通过对比第一服务器机组接收到反馈信息的第一时间和第二服务器机组接收到反馈信息的第二时间,能够获得测试系统的延迟时间。从而使得测试系统的测试过程更加准确有效,可以获得延迟时间和指标波动的剧烈程度。(The application discloses test system and test method for power distribution and utilization communication, and the test system comprises: a client; the server terminal comprises a first server set and a second server set which are not connected with each other; the second server machine set is in radio signal connection with the client; the first server unit is in wired electric signal connection with the client; the system comprises a carrier communication power line and a server terminal, wherein the carrier communication power line is used for connecting a client terminal and the server terminal, and can load an interference source to introduce noise; the method comprises the steps that whether the change degree of indexes on a carrier communication power line is larger than a preset value or not is judged through a PLC device; and comparing the first time when the first server set receives the feedback information with the second time when the second server set receives the feedback information, so as to obtain the delay time of the test system. Therefore, the test process of the test system is more accurate and effective, and the delay time and the intensity of index fluctuation can be obtained.)

1. A test system for power distribution and distribution communications, comprising:

the client is connected with a remote data reading system;

the server terminal comprises a first server unit and a second server unit which are not connected with each other, and the first server unit and the second server unit are respectively connected with a remote data receiving and analyzing system; the second server machine set is in radio signal connection with the client; the first server unit is in wired electric signal connection with the client;

a carrier communication power line for connecting the client and the server terminal, the carrier communication power line being capable of loading an interference source to introduce noise;

the PLC equipment is used for judging whether the change degree of the index on the carrier communication power line is larger than a preset value or not;

when a test is started, the first server set loads a video file and sends the video file to the client through the first server set, after a remote data reading system of the client reads the video file, feedback information is sent to the first server set and the second server set, and delay time of the test system is obtained by comparing first time when the first server set receives the feedback information with second time when the second server set receives the feedback information.

2. The test system for power distribution communication of claim 1,

the indexes on the carrier communication power line include: a carrier signal integrity index, a continuity index, a distortability index, and a delay index.

3. The test system for power distribution communication of claim 1,

the types of interference sources loaded on the carrier communication power line include noise interference, impedance variation, and signal attenuation.

4. The test system for power distribution communication of claim 1,

the interference source loaded on the carrier communication power line comprises a sound wave generator, a blowing system, a vibration system and a spraying system; the sound wave generator, the blowing system, the vibration system and the spraying system are in radio signal connection with the second server unit respectively.

5. The test system for power distribution communication of claim 1,

the client and the server terminal are both provided with GPS positioning devices, and the server terminal sends positioning signals through the GPS positioning devices to record client information connected with the server terminal and determine carrier communication station area information and a communication path.

6. A test method for telecommunication, which is applied to the test system for telecommunication according to any one of claims 1 to 5, comprising:

loading an interference source on a carrier communication power line between the client and the server terminal to introduce noise;

selecting PLC equipment and a power supply environment;

loading a video file for the first server unit, sending the video file to the client through the first server unit, and sending feedback information to the first server unit and the second server unit after a remote data reading system of the client reads the video file;

judging whether the change degree of the index on the carrier communication power line is larger than a preset value or not by using the PLC equipment, and obtaining a judgment result;

comparing the first time when the first server set receives the feedback information with the second time when the second server set receives the feedback information to obtain the delay time of the test system;

and outputting the judgment result and the delay time.

7. The power distribution and utilization communication test method according to claim 6, wherein the determining, by the PLC apparatus, whether the degree of change of the index on the carrier communication power line is larger than a preset value and before obtaining the determination result, comprises:

Dividing the frequency band of the carrier communication power line to be detected into 128 sub-channels, wherein the bandwidth of each sub-channel is 3.75kHz, and transmitting carrier frequency signals on the central frequency of every other sub-channel.

8. The method of testing for power distribution and utilization communications of claim 7, wherein said transmitting a carrier frequency signal comprises:

transmitting a set of known training sequences, wherein the period of a consistent training sequence is N;

the frequency domain signal is transformed into a time domain signal by IFFT, and 128 sub-frequency signals are transmitted in parallel at a time.

9. The method for testing power distribution communications of claim 6, further comprising:

the client sends a client code to a server terminal, the server terminal receives the code and obtains distance data between the client and the server terminal through a GPS positioning device, and the distance data is used for detecting whether the client is in a channel crossing region or not;

the server terminal sends a carrier test signal, and the client side establishes communication connection after correctly receiving the carrier test signal;

and the server terminal records the communication path and is connected with the test updating record data periodically.

10. The method for testing power distribution communications of claim 6, further comprising:

Sending the video file for the client through the first server set, marking a time stamp T1 when the client reads that the video file starts to be received, and marking a first time stamp T2 when the first server set receives the feedback information; a second time stamp when the second server set receives the feedback information is a time stamp T2';

and comparing the ratio of (T2-T1)/(T2' -T1) to obtain the load condition of the power line.

Technical Field

The application relates to the technical field of power distribution and utilization communication testing, in particular to a testing system and a testing method for power distribution and utilization communication.

Background

PLC, which is Power line Communication, is a short name for english Power line Communication. The power carrier is a communication method specific to a power system, and the power carrier communication is a technology for transmitting an analog or digital signal at a high speed by a carrier method using an existing power line. The method has the greatest characteristic that data transmission can be carried out only by wires without erecting a network again.

The power line carrier communication is divided into a low voltage power line carrier and a high voltage power line carrier according to a frequency bandwidth. In a data transmission system of a low voltage power line carrier, the low voltage power line communicates with each carrier terminal in a carrier communication module, and the carrier communication terminal exchanges information with a monitoring terminal through a digital interface.

However, the current power line carrier technology still has some disadvantages: the testing process has defects, and the testing process has delay, so that the control of the testing system is not accurate enough.

Disclosure of Invention

The application provides a test system and a test method for power distribution and utilization communication, which aim to solve the problem that the test process is delayed and the control on the test system is not accurate enough in the prior art.

In order to solve the above technical problem, the present application provides a test system for power distribution and distribution communication, including: a power source; the client is connected with the power supply and the remote data reading system; the server terminal comprises a first server unit and a second server unit which are not connected with each other, and the first server unit and the second server unit are respectively connected with a remote data receiving and analyzing system; the second server machine set is in radio signal connection with the client; the first server unit is in wired electric signal connection with the client; the system comprises a carrier communication power line and a server terminal, wherein the carrier communication power line is used for connecting a client terminal and the server terminal, and can load an interference source to introduce noise; the PLC equipment is used for judging whether the change degree of the index on the carrier communication power line is larger than a preset value or not; when the test is started, the first server set loads a video file, the video file is sent to the client through the first server set, the remote data reading system of the client sends feedback information to the first server set and the second server set after reading the video file, and the delay time of the test system is obtained by comparing the first time when the first server set receives the feedback information with the second time when the second server set receives the feedback information.

Optionally, the indicator on the carrier communication power line includes: a carrier signal integrity index, a continuity index, a distortability index, and a delay index.

Optionally, the types of interference sources loaded on the carrier communication power line include noise interference, impedance variation, and signal attenuation.

Optionally, the interference source loaded on the carrier communication power line includes a sound generator, a blower system, a vibration system and a spraying system; the sound wave generator, the blowing system, the vibration system and the spraying system are respectively in radio signal connection with the second server unit.

Optionally, both the client and the server terminal are provided with GPS positioning devices, and the server terminal sends a positioning signal to record client information connected to the server terminal through the GPS positioning devices, and determines carrier communication station area information and a communication path.

In order to solve the above technical problem, the present application provides a testing method for power distribution and distribution communication, which is applied to the testing system for power distribution and distribution communication, and includes: implanting a remote data reading and transmitting system at a client, implanting a remote data receiving and analyzing system at a server terminal, and loading an interference source on a carrier communication power line between the client and the server terminal to introduce noise; selecting PLC equipment and a power supply environment; loading a video file for a first server unit, sending the video file for a client through the first server unit, and sending feedback information to the first server unit and a second server unit after a remote data reading system of the client reads the video file; judging whether the change degree of the index on the carrier communication power line is larger than a preset value by using the PLC equipment to obtain a judgment result; comparing the first time when the first server set receives the feedback information with the second time when the second server set receives the feedback information to obtain the delay time of the test system; and outputting the judgment result and the delay time.

Optionally, before determining whether a degree of change of an index on a carrier communication power line is greater than a preset value by using a PLC device, the method includes: the frequency band of a carrier communication power line to be detected is divided into 128 sub-channels, the bandwidth of each sub-channel is 3.75kHz, and carrier frequency signals are transmitted on the central frequency of every other sub-channel.

Optionally, the transmitting a carrier frequency signal includes: transmitting a set of known training sequences, wherein the period of a consistent training sequence is N; the frequency domain signal is transformed into a time domain signal by IFFT, and 128 sub-frequency signals are transmitted in parallel at a time.

Optionally, the testing method for power distribution communication further comprises: the client sends a client code to the server terminal, the server terminal receives the code and obtains distance data between the client and the server terminal through a GPS positioning device, and the distance data is used for detecting whether the client is in a channel crossing region or not; the server terminal sends a carrier test signal, and the client side establishes communication connection after correctly receiving the carrier test signal; the server terminal records the communication path and periodically connects the test update record data.

Optionally, the testing method for power distribution and utilization communication further includes: sending a video file to the client through the first server set, marking a time stamp of starting to receive the video file read by the client as a time stamp T1, and marking a first time stamp of receiving feedback information by the first server set as a time stamp T2; the second time stamp when the second server set receives the feedback information is a time stamp T2'; and comparing the ratio of (T2-T1)/(T2' -T1) to obtain the load condition of the power line.

The application provides a test system and a test method for power distribution and utilization communication.A server terminal in the test system comprises a first server set and a second server set which are not connected with each other; the second server machine set is in radio signal connection with the client; the first server unit is in wired electric signal connection with the client; the method and the device can judge whether the change degree of the index on the carrier communication power line is larger than a preset value through the PLC equipment; and comparing the first time when the first server set receives the feedback information with the second time when the second server set receives the feedback information, so as to obtain the delay time of the test system. Therefore, the test process of the test system is more accurate and effective, and the delay time and the intensity of index fluctuation can be obtained.

Drawings

In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of a test system for telecommunications according to the present application;

FIG. 2 is a schematic flow chart diagram of an embodiment of a test method for power distribution communication according to the present application.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the following describes the test system and test method for power distribution communication provided in the present application in further detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a test system for power distribution and communications according to the present application. In the embodiment, the test system for power distribution and distribution communication is realized based on the power line carrier technology.

A test system for power distribution communication may include a power supply, a client, a server terminal, a carrier power line, and a PLC device.

The power supply is used for determining the power supply environment, and the power supply environment is 10 KV-50 KV.

The client side is connected with the power supply and is connected with the remote data reading system.

The server terminal comprises a first server unit and a second server unit which are not connected with each other, and the first server unit and the second server unit are respectively connected with a remote data receiving and analyzing system; the second server machine set is in radio signal connection with the client; the first server set is in wired electric signal connection with the client.

And the carrier communication power line is used for connecting the client terminal and the server terminal, and can load an interference source to introduce noise.

Optionally, a power input device may be further included, and the client may be connected to the carrier power line via the power input device.

Optionally, the types of interference sources loaded on the carrier communication power line include noise interference, impedance variation, and signal attenuation. The interference source loaded on the carrier communication power line comprises a sound wave generator, a blowing system, a vibration system and a spraying system; the sound wave generator, the blowing system, the vibration system and the spraying system are respectively in radio signal connection with the second server unit.

In the power line carrier communication transmission, there are many uncertain factors such as noise interference (e.g., lightning, noise generated by various electrical devices, switching of different loads, etc.), impedance change, signal attenuation, etc., which will affect the transmission quality. There are many methods for evaluating communication quality, which can be classified into a probability theory-based method, an analytic hierarchy process, and a fuzzy logic method. In the embodiment, a fuzzy comprehensive evaluation method can be selected, which can evaluate the object of the project on various uncertain factors. On the basis of the evaluation result, a more reasonable evaluation result is obtained. The fuzzy comprehensive evaluation method is adopted to comprehensively evaluate the performance of the product on the power consumption, the volume and the cost of the PLC equipment, the communication rate, the attenuation resistance, the interference resistance and the error rate of the PLC and the adaptation condition of the communication protocol, so that different service requirements of a power distribution network can be met, and the PLC product can be reasonably selected.

And the PLC equipment is used for judging whether the change degree of the index on the carrier communication power line is larger than a preset value or not, so that the intensity of the index fluctuation on the carrier communication power line is detected. Optionally, the indicator on the carrier communication power line detected by the PLC device includes: a carrier signal integrity index, a continuity index, a distortability index, and a delay index.

The indexes are important influence factors under the specific attenuation and interference environment of the power line channel of the PLC equipment. The scheme researches a method for testing the power line channel environment, and can be generated by means of FPGA, D/A, program-controlled attenuation and the like through a detection platform according to the condition of a test result. In a certain channel environment, the performance test of the PLC is closely related to the channel environment of the power line.

The PLC equipment judges the accuracy of the test system according to the fluctuation intensity, and when the fluctuation intensity exceeds a preset value, for example, 10%, the test system is considered to be inaccurate.

The client sends a client code to the server terminal, the server terminal receives the code and obtains distance data between the client and the server terminal through the GPS positioning device, and the distance data is used for detecting whether the client is in a channel crossing region or not; the server terminal sends a carrier test signal, the client can establish communication connection after correctly receiving the carrier test signal, and the server terminal records a communication path and periodically connects test update record data.

In other embodiments, the power environment may be a low voltage environment, and the power line channel specific attenuation is obtained by measuring a channel gain of the power line; the channel gain measurement method of the low-voltage power line comprises the following steps: when the bandwidth of a power line channel to be detected is 20 kHz-5000 kHz (the low, medium and high frequencies in the cross-band PLC can be according to the method), the frequency band of the power line channel is divided into 128 sub-channels, the bandwidth of each sub-channel is 3.75kHz, and a carrier frequency signal is transmitted at the central frequency of every other sub-channel, namely the measurement bandwidth is 7.5 kHz.

In order to improve the channel gain measurement precision of medium and low voltage distribution lines, the same group of training sequences needs to be repeatedly measured for L times, then L times of measurement results are averaged, channel noise power spectrum measurement of the medium and low voltage distribution lines is carried out at an FFT (fast Fourier transform) output end, only the estimated pure channel output is subtracted from the actual channel output containing noise, and the rest is noise, so that 3200 times of measurement are generally needed under the condition of unknown noise, and the measured noise power can be ensured to be accurate enough.

After the characteristic parameters of the power line channel are obtained, the actual environment of the power line channel can be accurately simulated through the detection platform, and on the basis, the test of each performance index of the PLC can be performed, so that the performance index of the PLC can be more consistent with the field condition of the power distribution network.

The channel gain measurement and estimation process comprises the following steps: the transmitting end transmits a group of training sequences xk known by the receiving end, the period of xk is N, a frequency domain signal is converted into a time domain signal through IFFT, 128 sub-frequency signals are transmitted in parallel at one time, the time domain signal is converted into a frequency domain signal through FFT at the receiving end, then the impulse response of each sub-channel is measured, N is more than or equal to the length of a channel impulse response pk, and a channel output sequence is the convolution of channel input and the impulse response.

When the test is started, the first server set loads a video file, the video file is sent to the client through the first server set, the remote data reading system of the client sends feedback information to the first server set and the second server set after reading the video file, and the delay time of the test system is obtained by comparing the first time when the first server set receives the feedback information with the second time when the second server set receives the feedback information.

In some embodiments, the client terminal and the server terminal can be provided with a GPS positioning device, and the server terminal can determine the carrier communication station area information and the communication path by sending a positioning signal to record the client information connected with the server terminal through the GPS positioning device.

In addition, the video file is transmitted to the client during testing, the number of the clients transmitted by the first server unit can be gradually increased, the remote data reading and transmitting system simultaneously transmits feedback data for the two large service units, and recording can be performed by comparing the data receiving time of the two large service units when the large service unit transmitting data for the client is blocked. Each group of data is marked with a time stamp, and the condition that the server terminal of the sent video is blocked can be analyzed by comparing the time stamps.

The detailed procedure of data analysis is illustrated:

A1) under the condition of no interference source, starting to load video files for each client through the first server machine set, the time stamp T1 for the receipt of the video file after each client reads a signal to begin receiving the video file, and transmits the data packet marked with the time stamp T1 back to the first server unit and the second server unit through the power line and wireless signals simultaneously, the first server unit and the second server unit mark the time stamp T2 and T2' on the data packet after receiving the data packet, in comparison with the ratio (T2-T1)/(T2' -T1), a larger ratio indicates a larger load on the power line, a ratio larger than 7 indicates a loaded state, at this time, recording the number of the clients to which the first server set sends videos, and recording the number P1 of the clients, wherein P1 is the maximum number of the clients;

A2) Gradually increasing the number of the clients which are connected with the first server unit to transmit the video, enabling the power line to be in a blocked state when the ratio of (T2-T1)/(T2' -T1) is larger than 12, and recovering the machine after recording data;

A3) introducing an interference source, then starting to load video files for each client through a first server set, the time stamp T3 for the receipt of the video file after each client reads a signal to begin receiving the video file, and transmits the data packet marked with the time stamp T3 back to the first server unit and the second server unit through the power line and wireless signals simultaneously, the first server unit and the second server unit mark the time stamp T4 and T4' on the data packet after receiving the data packet, in comparison with the ratio (T4-T3)/(T4' -T3), a larger ratio indicates a larger load on the power line, a ratio larger than 6 indicates a loaded state, at this time, recording the number of the clients to which the first server set sends videos, and recording the number P2 of the clients, wherein P2 is the maximum number of the clients;

A4) gradually increasing the number of the clients of the first server unit connected with the transmission video, when the ratio of (T4-T3)/(T4' -T3) is more than 10, enabling the power line to be in a dead-locked state, and recovering the machine after recording data;

A5) And analyzing the data, and comparing the indexes of the integrity index, the continuity index, the distortion index, the delay index and the like of the carrier signal in the data packet marked with T1 and the data packet marked with T3.

A7) Comparing indexes such as a carrier signal integrity index, a continuity index, a distortion index, a delay index and the like in the data packet in the stuck state; the data can visually indicate the power line carrier distortion conditions in the non-interference normal operation state, the non-interference stuck state, the interference normal operation state and the interference stuck state.

Because each client is internally provided with a GPS positioning device, corresponding GPS information is also recorded in each data packet marked with T1 and T3, so that a data packet with poor data, such as a carrier signal integrity index, a continuity index, a distortion index, a delay index and the like, can be traced according to the internal GPS information to check whether the data packet is a problem of the client, and if the data packet is not a data packet, tracing and key analysis check can be performed according to a transmission path corresponding to the GPS information, so that the data collected in the embodiment is complete and representative, tracing can be performed according to the data information, and the test of the power carrier technology is more complete.

In this embodiment, a path for transmitting radio signals and each child node are directly connected, a path for connecting the child node and the first server set in a wired manner needs to pass through a plurality of child nodes/master nodes, and signal transmission is interfered once more every time the child node passes through one node, so that data transmitted by the child node to the second server set through the wireless signals is compared with data finally returned to the corresponding first server set by the child node through the wired manner, and it can be seen how much interference effect the interference source has on each child node, and how much interference the child node receives in the transmission process.

The data of each sub-node is collected in a mode that the wireless signals are directly connected with the sub-nodes, and the data of the sub-nodes collected in a wired mode can form interference and attenuation through power lines, the sub-nodes, the main node and the like, so that more data of the sub-nodes can be collected in a mode that the wireless signals are directly connected with the sub-nodes, and the data are more complete.

In order to provide a testing system based on power distribution and distribution communication, the present application provides a testing method for power distribution and distribution communication, please refer to fig. 2, and fig. 2 is a flowchart illustrating an embodiment of the testing method for power distribution and distribution communication. In this embodiment, the testing method for power distribution and distribution communication may include steps S110 to S160, which are as follows:

S110: an interference source is loaded on a carrier communication power line between the client and the server terminal to introduce noise.

S120: selecting a PLC device and a power environment.

S130: the method comprises the steps that a video file is loaded for a first server set, the video file is sent to a client through the first server set, and after the video file is read by a remote data reading system of the client, feedback information is sent to the first server set and a second server set.

S140: and judging whether the change degree of the index on the carrier communication power line is greater than a preset value by using the PLC equipment, and obtaining a judgment result.

The frequency band of a carrier communication power line to be detected is divided into 128 sub-channels, the bandwidth of each sub-channel is 3.75kHz, and carrier frequency signals are transmitted on the central frequency of every other sub-channel.

Specifically, a set of known training sequences is transmitted, wherein the period of the consistent training sequence is N; the frequency domain signal is transformed into a time domain signal by IFFT, and 128 sub-frequency signals are transmitted in parallel at a time.

S150: and comparing the first time when the first server set receives the feedback information with the second time when the second server set receives the feedback information to obtain the delay time of the test system.

S160: and outputting the judgment result and the delay time.

Optionally, the testing method for power distribution communication further comprises: the client sends a client code to the server terminal, the server terminal receives the code and obtains distance data between the client and the server terminal through a GPS positioning device, and the distance data is used for detecting whether the client is in a channel crossing region or not; the server terminal sends a carrier test signal, and the client side establishes communication connection after correctly receiving the carrier test signal; the server terminal records the communication path and periodically connects the test update record data.

Optionally, the testing method for power distribution and utilization communication further includes: sending a video file to the client through the first server set, marking a time stamp of starting to receive the video file read by the client as a time stamp T1, and marking a first time stamp of receiving feedback information by the first server set as a time stamp T2; the second time stamp when the second server set receives the feedback information is a time stamp T2'; and comparing the ratio of (T2-T1)/(T2' -T1) to obtain the load condition of the power line.

The application provides a test system and a test method for power distribution and utilization communication.A server terminal in the test system comprises a first server set and a second server set which are not connected with each other; the second server machine set is in radio signal connection with the client; the first server unit is in wired electric signal connection with the client; according to the method, the index fluctuation intensity degree on the carrier communication power line between the client and the server terminal can be detected through the PLC equipment; and comparing the first time when the first server set receives the feedback information with the second time when the second server set receives the feedback information, so as to obtain the delay time of the test system. Therefore, the test process of the test system is more accurate and effective, and the delay time and the intensity of index fluctuation can be obtained.

It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. In addition, for convenience of description, only a part of structures related to the present application, not all of the structures, are shown in the drawings. The step numbers used herein are also for convenience of description only and are not intended as limitations on the order in which the steps are performed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.