CN119183132A - Testing device for power communication network - Google Patents
Testing device for power communication network Download PDFInfo
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- CN119183132A CN119183132A CN202411312404.4A CN202411312404A CN119183132A CN 119183132 A CN119183132 A CN 119183132A CN 202411312404 A CN202411312404 A CN 202411312404A CN 119183132 A CN119183132 A CN 119183132A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
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Abstract
The invention discloses a testing device for an electric power communication network, which belongs to the technical field of electric power communication networks and particularly comprises a testing component, a core processor, a data acquisition unit, a timing unit, an account management unit, a data analysis unit, a data statistics unit and a supporting mechanism, wherein the core processor is arranged in the testing component and is used for executing analysis processing on data; the data acquisition unit is connected with the core processor and used for respectively acquiring wired network information and wireless network information, when the wireless network information is tested, different positions are selected as test points, the statistics of the attenuation rate of the wireless network at different distances is realized, the test part can be protected in the closed state of the supporting mechanism, and in the unfolding state, lifting support can be formed, so that the test part can conveniently test the wireless network information at different height positions, and the wired network information and the wireless network information are tested and used.
Description
Technical Field
The invention relates to the technical field of power communication networks, in particular to a testing device for a power communication network.
Background
The power communication network is generated to ensure the safe and stable operation of the power system. The system is commonly called as three main supports for safe and stable operation of the power system together with a relay protection, safe and stable control system and a dispatching automation system of the power system. The method is a foundation for power grid dispatching automation, network operation marketing and management modernization, is an important means for ensuring safe, stable and economic operation of a power grid, and is an important infrastructure of a power system. Because the electric power communication network has extremely strict requirements on the reliability of communication and the rapidity and accuracy of protecting the transmission of control information, and the electric power department has special resource advantages of developing communication, electric power companies in most countries in the world establish an electric power system special communication network in a self-building mode.
The network is a data link formed by physically linking individual workstations or hosts together. The communication network refers to the physical connection of each isolated device, so as to realize the links for information exchange between people, people and computers and between computers, thereby achieving the purposes of resource sharing and communication.
In an electric power communication network, the network performance is mainly determined by the transmission speed, stability and accuracy of network data, and in order to ensure a high-quality network, after the electric power communication network is paved, the network performance is required to be tested to judge whether the network actually meets the use requirement.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The present invention has been made in view of the above and/or problems occurring in the prior test devices for power communication networks.
Therefore, the invention aims to provide a testing device for an electric power communication network, which is used for selecting different positions as testing points when testing wireless network information, realizing statistics on attenuation rates of the wireless network at different distances, protecting a testing component in a closed state of a supporting mechanism, and forming a lifting support in an unfolding state, so that the testing component can conveniently test the wireless network information at different height positions, and realizing test use of wired network information and wireless network information.
In order to solve the technical problems, according to one aspect of the present invention, the following technical solutions are provided:
a test device for a power communication network, comprising:
a test component;
the core processor is arranged inside the test component and used for executing analysis processing on the data;
The data acquisition unit is connected with the core processor and used for acquiring wired network information and wireless network information respectively;
the timing unit is connected with the data acquisition unit and is used for counting the transmission time of the data;
The account management unit is connected with the core processor and used for registering information of the detection station and information of the tester;
the data analysis unit is connected with the core processor and is used for executing analysis processing on the wired network information and the wireless network information;
The data statistics unit is connected with the data analysis unit and is used for performing statistics management on the analyzed network data information;
And the supporting mechanism is arranged outside the test part.
The testing device for the electric power communication network is characterized in that the testing component comprises a device shell, a network cable connector, a wireless receiving and transmitting antenna, a control panel and a display screen, wherein the network cable connector is arranged on the side wall of the device shell, the wireless receiving and transmitting antenna is arranged on the top of the device shell, the control panel is arranged at the lower part of the front end of the device shell, and the display screen is arranged at the upper part of the front end of the device shell.
The data acquisition unit comprises a wired acquisition module, a wireless acquisition module, a signal amplification module, a signal filtering module and a classification management module, wherein the wired acquisition module takes a network cable joint as a terminal, the wireless acquisition module takes a wireless receiving and transmitting antenna as a terminal, the signal amplification module is used for amplifying data signals, the signal filtering module is used for filtering amplified signal impurities, and the classification management module is used for performing classification management on wired network information and wireless network information.
The account management unit comprises a user registration module, a site registration module and a data recording module, wherein the user registration module is used for registering personal account information of a tester, the site registration module is used for registering information of a power service master station to be tested, and the data recording module is used for recording information of the tester and the power service master station.
The data analysis unit comprises a waveform analysis unit, a frequency spectrum analysis unit, a wireless analysis unit, a data metering unit and a distance recording module, wherein the waveform analysis unit is used for analyzing waveforms transmitted by a wired network, the frequency spectrum analysis unit is used for analyzing frequency spectrums transmitted by the wired network, the wireless analysis unit is used for analyzing information of a wireless network, the data metering unit is used for metering the unit time transmission information quantity of the wired network information and the wireless network information, and the distance recording module is used for recording the test distance of the wireless network information.
The data statistics unit comprises a wired statistics module, a wireless statistics module, a power consumption statistics module and an attenuation statistics module, wherein the wired statistics module is used for performing statistics on information analysis results of the wired network, the wireless statistics module is used for performing statistics on information analysis results of the wireless network, the power consumption statistics module is used for performing statistics on power consumption of the wired network, and the attenuation statistics module is used for performing statistics on attenuation rates of the wireless network at different distances.
The invention relates to a testing device for an electric power communication network, which is a preferable scheme, wherein the supporting mechanism comprises a back plate, a flip cover, a lifting component and a sliding rail, the back plate is arranged at the rear side of a device shell, the bottom of the back plate is hinged with the flip cover, the lifting component is arranged at the lower end of the inner side of the flip cover, the sliding rail is arranged on the back plate, and the device shell is connected to the sliding rail in a sliding way.
As an optimal scheme of the testing device for the electric power communication network, a sealing gasket is arranged between the back plate and the flip, and the back plate and the upper end of the flip are connected with buckles which are mutually embedded.
As a preferable scheme of the testing device for the power communication network, the outer wall of the flip cover is provided with uniformly distributed protective sleeves, and the protective sleeves are sponge sleeves.
As a preferable scheme of the testing device for the power communication network, the control panel and the display screen are connected with the core processor.
The invention uses the test component to collect the wired network information and the wireless network information, registers the information of the detection site and the information of the tester through the account management unit during the test, is convenient for recording and consulting the test information of the power business master station, analyzes and processes the data through the built-in core processor, analyzes and processes the wired network information and the wireless network information, and uses the data statistics unit to carry out statistics management on the analyzed network data information, when the wireless network information is tested, selects different positions as test points, realizes statistics on the attenuation rate of the wireless network under different distances, can protect the test component under the closed state of the supporting mechanism, and can form lifting support under the open state, thereby facilitating the test of the wireless network information of different height positions by the test component and realizing the test use of the wired network information and the wireless network information.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, which are to be understood as merely some embodiments of the present invention, and from which other drawings can be obtained by those skilled in the art without inventive faculty. Wherein:
FIG. 1 is a schematic view of an expanded structure of the present invention;
FIG. 2 is a schematic view of a closed structure of the present invention;
FIG. 3is a schematic diagram of a system architecture according to the present invention;
FIG. 4 is a schematic diagram of a data acquisition unit according to the present invention;
FIG. 5 is a schematic diagram of an account management unit according to the present invention;
FIG. 6 is a schematic diagram of a data analysis unit according to the present invention;
FIG. 7 is a schematic diagram of a data statistics unit according to the present invention.
In the figure, a test part 100, a device shell 110, a network cable connector 120, a wireless receiving and transmitting antenna 130, a control panel 140, a display screen 150, a core processor 200, a data acquisition unit 300, a wired acquisition module 310, a wireless acquisition module 320, a signal amplification module 330, a signal filtering module 340, a classification management module 350, a timing unit 400, an account management unit 500, a user registration module 510, a site registration module 520, a data recording module 530, a data analysis unit 600, a waveform analysis unit 610, a frequency spectrum analysis unit 620, a wireless analysis unit 630, a data metering unit 640, a distance recording module 650, a data statistics unit 700, a wired statistics module 710, a wireless statistics module 720, a power consumption statistics module 730, an attenuation statistics module 740, a support mechanism 800, a backboard 810, a flip cover 820, a lifting part 830 and a slide rail 840 are arranged.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein the sectional view of the device structure is not partially enlarged to general scale for the convenience of description, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The invention provides a testing device for an electric power communication network, which is used for selecting different positions as testing points when testing wireless network information, realizing statistics on attenuation rates of the wireless network under different distances, protecting a testing component under a closed state of a supporting mechanism, and forming a lifting type support under an unfolding state, so that the testing component is convenient for testing the wireless network information at different height positions, and realizing testing and use of wired network information and wireless network information, and referring to fig. 1-7, the testing device comprises a testing component 100, a core processor 200, a data acquisition unit 300, a timing unit 400, an account management unit 500, a data analysis unit 600, a data statistics unit 700 and a supporting mechanism 800;
the test part 100 is used as a test terminal for connecting a wired network and receiving wireless network information and executing corresponding information operation processing;
Specifically, the test component 100 includes a device housing 110, a network cable connector 120, a wireless transceiver antenna 130, a control panel 140 and a display screen 150, where the network cable connector 120 is disposed on a side wall of the device housing 110, the wireless transceiver antenna 130 is disposed on the top of the device housing 110, the control panel 140 is disposed on the lower portion of the front end of the device housing 110, and the display screen 150 is disposed on the upper portion of the front end of the device housing 110;
The network cable connector 120 is used for connecting data connection of a wired network, realizing information transmission of the wired network, being used as terminal equipment to directly receive the information of the wired network, the wireless transceiver antenna 130 is used for receiving the data information of the wireless network, being used as a wireless receiving terminal, conforming to an actual data transmission mode, and enabling a test result to be more fit with an actual situation.
The core processor 200 is disposed inside the test part 100 and is used for performing analysis processing on the data;
the data acquisition unit 300 is connected with the core processor 200 and is used for respectively acquiring wired network information and wireless network information;
The data acquisition unit 300 includes a wired acquisition module 310, a wireless acquisition module 320, a signal amplification module 330, a signal filtering module 340 and a classification management module 350, where the wired acquisition module 310 uses the network cable connector 120 as a terminal, the wireless acquisition module 320 uses the wireless transceiver antenna 130 as a terminal, the signal amplification module 330 is used for performing amplification on data signals, the signal filtering module 340 is used for performing filtering on amplified signal impurities, and the classification management module 350 is used for performing classification management on wired network information and wireless network information;
The wired acquisition module 310 and the wireless acquisition module 320 acquire wired network information and wireless network information respectively, are mutually independent in the acquisition process, do not work simultaneously, avoid signal interference during acquisition, transmit acquired information to the signal amplification module 330 for amplification, then the signal filtering module 340 filters amplified signal impurities, improves information accuracy, and finally performs classified uploading on the transmitted network information through the classified management module 350.
The signal amplification algorithm formula relates to the calculation of gain, input-output resistance, bandwidth and maximum output power.
The gain of an amplifier is expressed in decibels as the ratio between the output and input signals. The formula is
Where Vout is the output voltage and Vin is the input voltage.
Input and output resistance formulas-input and output resistances affect noise and signal distortion of the amplifier.
Formula (VI)And
Where Vi and Ii are input voltages and currents, and Vo and Io are output voltages and currents.
Amplifier bandwidth-bandwidth is the range of frequencies over which an amplifier can amplify a signal and is typically determined by experimental measurements.
Maximum output power formulation for a resistive load, maximum output power can be expressed as,
Where Pout is the output power, vout is the output voltage, and Rout is the load resistance.
1. And (3) average filtering, namely using a neighborhood average method to replace each pixel value in the original image by an average value. A filtering template is arranged, the template consists of a plurality of pixels adjacent to the filtering template, the average value of all pixels in the template is calculated, the average value is given to a current pixel point (x, y) to be used as the gray scale g (x, y) of the processed image at the point, namely, g (x, y) =Σf (x, y)/m, and m is the total number of pixels comprising the current pixel in the template.
2. Median filtering is given by the mathematical formula y n=mean (x n-k.. xn.. X n+k) where x is the original signal, y is the filtered signal, n is the current position and k is the window size.
3. Gaussian filtering-gaussian functions can be used to model images in the presence of noise. Assuming an image f (x, y) of size NxN pixels, the pixel values at any point (x, y) can be described by a gaussian function:
f(x,y)=∫∫f(u,v)exp[-{(u-x)^2+(v-y)^2}/2σ^2]dudv
Where f (u, v) is the pixel value of the (u, v) point on the original image, σ is the gaussian filter parameter, representing the "width" of the gaussian function.
The timing unit 400 is connected to the data acquisition unit 300, and is configured to perform statistics on transmission time of data, and calculate, after obtaining the total amount of data, an amount of information transmitted per unit time according to the required transmission time.
The account management unit 500 is connected to the core processor 200, and is used for registering information of a detection site and information of a tester;
The account management unit 500 includes a user registration module 510, a site registration module 520, and a data recording module 530, where the user registration module 510 is configured to perform registration of personal account information of a tester, the site registration module 520 is configured to perform registration of information of a power service master station to be tested, and the data recording module 530 is configured to perform recording of information of the tester and the power service master station;
Because the power service main station is numerous (including indoor and outdoor wired and wireless network environments), the collection personnel are different (the individual collection habits of the staff are different), so that the account management unit 500 is utilized to record the information of the tester and the power service main station, and the later-stage review is convenient.
The data analysis unit 600 is connected to the core processor 200, and is used for performing analysis processing on the wired network information and the wireless network information;
The data analysis unit 600 includes a waveform analysis unit 610, a spectrum analysis unit 620, a wireless analysis unit 630, a data metering unit 640, and a distance recording module 650, where the waveform analysis unit 610 is configured to perform analysis on waveforms transmitted by a wired network, the spectrum analysis unit 620 is configured to perform analysis on spectrums transmitted by the wired network, the wireless analysis unit 630 is configured to perform analysis on information of the wireless network, the data metering unit 640 is configured to perform metering on information amount transmitted per unit time of the wired network information and the wireless network information, and the distance recording module 650 is configured to perform recording on a test distance of the wireless network information;
The waveform analysis unit 610 and the spectrum analysis unit 620 are used for analyzing data information of a wired network, the wireless analysis unit 630 is used for analyzing data information of a wireless network, the data metering unit 640 is used for respectively counting the unit time transmission information quantity of the wired network information and the wireless network information, so that the analysis of the network data transmission speed is realized, and the distance recording module 650 is used for recording the position information of the acquisition point when the wireless network information is acquired each time, so that the attenuation rate of the wireless network information transmission at different positions is conveniently calculated.
The data statistics unit 700 is connected to the data analysis unit 600, and is configured to perform statistics management on the analyzed network data information;
the data statistics unit 700 includes a wired statistics module 710, a wireless statistics module 720, a power consumption statistics module 730, and an attenuation statistics module 740, where the wired statistics module 710 is configured to perform statistics on information analysis results of a wired network, the wireless statistics module 720 is configured to perform statistics on information analysis results of a wireless network, the power consumption statistics module 730 is configured to perform statistics on power consumption statistics of the wired network, and the attenuation statistics module 740 is configured to perform statistics on attenuation rates of the wireless network at different distances;
The supporting mechanism 800 is arranged outside the test part 100, the supporting mechanism 800 comprises a back plate 810, a flip cover 820, a lifting part 830 and a sliding rail 840, the back plate 810 is arranged at the rear side of the equipment shell 110, the bottom of the back plate 810 is hinged with the flip cover 820, the lifting part 830 is arranged at the lower end of the inner side of the flip cover 820, the sliding rail 840 is arranged on the back plate 810, and the equipment shell 110 is connected on the sliding rail 840 in a sliding way;
In the closed state (shown in fig. 2), the supporting mechanism 800 performs external protection on the test component 100, and in the unfolded state, the lifting component 830 is lifted, so that the test component 100 can be driven to lift, supports the test component 100 at different heights, and is convenient for collecting wireless network information at different height positions.
In order to improve the protection effect, a sealing gasket is arranged between the back plate 810 and the flip 820, the upper ends of the back plate 810 and the flip 820 are connected with buckles which are mutually embedded, and the sealing performance and the stability of the connection state are improved.
Surrounding edge equipment is damaged when falling down, and the outer wall of the flip 820 is provided with a uniformly distributed protective sleeve, and the protective sleeve adopts a sponge sleeve and provides anti-falling protection through the protective sleeve.
The control panel 140 and the display 150 are both coupled to the core processor 200.
When the test is specifically used, the following steps are adopted for testing;
The method comprises the steps of firstly, information registration and acquisition, namely opening a flip 820 to expose a test part 100, registering information of a detection site and information of a tester by an account management unit 500, connecting wiring of a wired network to a network cable connector 120, carrying out information acquisition of the wired network, transmitting acquired information to a signal amplification module 330 for amplification, then filtering amplified signal impurities by a signal filtering module 340, improving information accuracy, and finally carrying out classified uploading on the transmitted network information by a classified management module 350;
step two, data analysis processing, the timing unit 400 counts the transmission time of the data, then the data analysis unit 600 analyzes and processes the wired network data information, counts the transmission information quantity of the wired network information in unit time, and realizes the analysis of the network data transmission speed;
step three, data statistics display, the data statistics unit 700 performs statistics management on the analyzed network data information, and then displays the test result through the display screen 150;
Step four, wireless network collection, the wiring of a wired network is pulled out, a wireless emission source is taken as a center, the testing component 100 is moved outwards, the distance between the wireless emission source and the testing component 100 is changed, at the moment, the lifting component 830 is lifted, the testing component 100 can be driven to lift, the testing component 100 is supported at different heights, wireless network information at different height positions is conveniently collected, the wireless transceiver antenna 130 is used for receiving data information of the wireless network, the collected information is transmitted to the signal amplification module 330 for amplification, then the signal filtering module 340 filters amplified signal impurities, the information accuracy is improved, and finally the transmitted network information is classified and uploaded through the classification management module 350;
Step five, wireless data analysis, the timing unit 400 counts the transmission time of the data, then the data analysis unit 600 analyzes and processes the wireless network data information, counts the transmission information quantity of the wireless network information in unit time, realizes the analysis of the network data transmission speed, and the attenuation statistics module 740 counts the attenuation rate of the wireless network at different distances according to different test positions;
Step six, data statistics display, the data statistics unit 700 performs statistics management on the analyzed network data information, and then displays the test result through the display screen 150;
after testing, flip cover 820 is closed and support mechanism 800 provides an over-wrap protection for test part 100.
Although the invention has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1.A test apparatus for an electrical power communication network, comprising:
A test part (100);
A core processor (200) disposed inside the test unit (100) for performing an analysis process on the data;
the data acquisition unit (300) is connected with the core processor (200) and is used for respectively acquiring wired network information and wireless network information;
The timing unit (400) is connected with the data acquisition unit (300) and is used for performing statistics on the transmission time of the data;
an account management unit (500) connected with the core processor (200) and used for registering information of the detection site and information of the tester;
A data analysis unit (600) connected to the core processor (200) for performing analysis processing on wired network information and wireless network information;
A data statistics unit (700) connected to the data analysis unit (600) for performing statistical management of the analyzed network data information;
And a support mechanism (800) disposed outside the test part (100).
2. The test device for an electric power communication network according to claim 1, wherein the test unit (100) comprises a device housing (110), a wire connector (120), a wireless transceiver antenna (130), a control panel (140) and a display screen (150), the wire connector (120) is arranged on the side wall of the device housing (110), the wireless transceiver antenna (130) is arranged on the top of the device housing (110), the control panel (140) is arranged on the lower portion of the front end of the device housing (110), and the display screen (150) is arranged on the upper portion of the front end of the device housing (110).
3. The test device for an electric power communication network according to claim 2, wherein the data acquisition unit (300) includes a wired acquisition module (310), a wireless acquisition module (320), a signal amplification module (330), a signal filtering module (340) and a classification management module (350), the wired acquisition module (310) is terminated by a network cable connector (120), the wireless acquisition module (320) is terminated by a wireless transceiver antenna (130), the signal amplification module (330) is configured to perform amplification of a data signal, the signal filtering module (340) is configured to perform filtering of amplified signal impurities, and the classification management module (350) is configured to perform classification management of wired network information and wireless network information.
4. A test apparatus for a power communication network according to claim 3, wherein the account management unit (500) comprises a user registration module (510), a site registration module (520) and a data recording module (530), the user registration module (510) being for performing registration of personal account information of a tester, the site registration module (520) being for performing registration of power service master station information to be tested, the data recording module (530) being for performing recording of information of the tester and the power service master station.
5. The test device for a power communication network according to claim 4, wherein the data analysis unit (600) includes a waveform analysis unit (610), a spectrum analysis unit (620), a wireless analysis unit (630), a data metering unit (640), and a distance recording module (650), the waveform analysis unit (610) is configured to perform analysis of a waveform transmitted by a wired network, the spectrum analysis unit (620) is configured to perform analysis of a spectrum transmitted by the wired network, the wireless analysis unit (630) is configured to perform analysis of information of the wireless network, the data metering unit (640) is configured to perform metering of a unit time transmission information amount of the wired network information and the wireless network information, and the distance recording module (650) is configured to perform recording of a test distance of the wireless network information.
6. The test device for a power communication network according to claim 5, wherein the data statistics unit (700) includes a wired statistics module (710), a wireless statistics module (720), a power consumption statistics module (730), and an attenuation statistics module (740), the wired statistics module (710) is configured to perform statistics on information analysis results of the wired network, the wireless statistics module (720) is configured to perform statistics on information analysis results of the wireless network, the power consumption statistics module (730) is configured to perform statistics on power consumption statistics of the wired network, and the attenuation statistics module (740) is configured to perform statistics on attenuation rates of the wireless network at different distances.
7. The test device for a power communication network according to claim 6, wherein the support mechanism (800) comprises a back plate (810), a flip cover (820), a lifting member (830) and a sliding rail (840), the back plate (810) is arranged at the rear side of the equipment housing (110), the bottom of the back plate (810) is hinged to the flip cover (820), the lifting member (830) is arranged at the lower end of the inner side of the flip cover (820), the sliding rail (840) is arranged on the back plate (810), and the equipment housing (110) is slidably connected to the sliding rail (840).
8. The testing device for an electrical communication network according to claim 7, wherein a sealing gasket is provided between the back plate (810) and the flip cover (820), and the back plate (810) and the flip cover (820) are connected with a buckle which is mutually embedded.
9. The test device for an electrical communication network according to claim 8, wherein the outer wall of the flip cover (820) is provided with evenly distributed protective sleeves, which are sponge sleeves.
10. A testing device for an electrical power communication network according to claim 9, wherein the control panel (140) and the display screen (150) are both connected to a core processor (200).
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