CN111130579B - Vehicle-mounted electronic communication system and communication method - Google Patents
Vehicle-mounted electronic communication system and communication method Download PDFInfo
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- CN111130579B CN111130579B CN201911411734.8A CN201911411734A CN111130579B CN 111130579 B CN111130579 B CN 111130579B CN 201911411734 A CN201911411734 A CN 201911411734A CN 111130579 B CN111130579 B CN 111130579B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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Abstract
The invention provides a vehicle-mounted electronic communication system which comprises a signal acquisition unit, a signal receiving unit and a wireless communication transmission unit, wherein the signal acquisition unit is connected with the signal receiving unit in a two-way mode and is connected with a background terminal through the wireless communication transmission unit, the signal acquisition unit comprises a central processing unit, a signal acquisition unit, a first antenna, a signal strength detection unit, an acquired signal amplification unit, a database unit and a first power module, and the signal receiving unit comprises a CPU (central processing unit), a second antenna, a second power module and a signal identification unit.
Description
Technical Field
The present invention relates to the field of electronic communications technologies, and in particular, to a vehicle-mounted electronic communication system and a vehicle-mounted electronic communication method.
Background
Currently, communication systems are a general term for technical systems used to perform information transfer procedures. Modern communication systems are implemented primarily by means of propagation of electromagnetic waves in free space, known as wireless communication systems, or transmission mechanisms in a guided medium, known as wired communication systems.
The current vehicle-mounted electronic communication system can realize the acquisition and transmission of external signals, but cannot detect and amplify the acquired signals, so that the signal transmission quality is poor.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
Therefore, the technical problem to be solved by the present invention is to overcome the defects of poor signal transmission quality and the like in the prior art, so as to provide a vehicle-mounted electronic communication system.
In order to solve the technical problems, the invention provides the following technical scheme: a vehicle-mounted electronic communication system comprises a signal acquisition unit, a signal receiving unit and a signal processing unit, wherein the signal acquisition unit is connected with the signal receiving unit in a bidirectional mode; and the signal receiving unit is connected with the background terminal through the wireless communication transmission unit.
As a preferable scheme of the vehicle-mounted electronic communication system of the present invention, wherein: the signal acquisition unit includes signal acquisition module, first antenna and central processing unit, first antenna passes through signal acquisition module and connects central processing unit, just signal acquisition module gathers external communication signal and transmits to central processing unit through first antenna.
As a preferable scheme of the vehicle-mounted electronic communication system of the present invention, wherein: the signal acquisition unit further comprises a signal intensity detection module and an acquisition signal amplification module, wherein the signal intensity detection module is connected with the acquisition signal amplification module through a central processing unit, and the signal intensity detection module is used for detecting the intensity of the acquired communication signals, sending the intensity to the central processing unit for judgment, and amplifying the detected weak communication signals through the acquisition signal amplification module.
As a preferable scheme of the vehicle-mounted electronic communication system of the present invention, wherein: the acquisition signal amplification module comprises a field effect transistor A, a field effect transistor B, an operational amplifier A and an operational amplifier B, wherein the grid electrode of the field effect transistor A is respectively connected with one end of a resistor A and one end of a capacitor A, the other end of the capacitor A is grounded, the drain electrode of the field effect transistor A is connected with the source electrode of the field effect transistor B, the source electrode of the field effect transistor A is respectively connected with one end of a resistor C and one end of a capacitor D, the drain electrode of the field effect transistor B is grounded, the grid electrode of the field effect transistor B is connected with one end of the capacitor B, the other end of the capacitor B is respectively connected with one end of the resistor B, one end of the capacitor C and one end of the resistor D, the anode of the operational amplifier A is respectively connected with one end of a resistor E and the other end of the capacitor D, the cathode of the operational amplifier A is respectively connected with one end of a resistor F and one end of a resistor G, the other end of the resistor F is connected with the other end of the resistor E and the other end of the resistor H8a, and the output end of the operational amplifier A are respectively connected with the other end of the resistor E, the positive electrode of the operational amplifier B is connected with the other end of the resistor H, one end of the capacitor E and one end of the resistor I respectively, the negative electrode of the operational amplifier B is grounded, and the output end of the operational amplifier B is connected with the other end of the resistor I, the other end of the capacitor E and one end of the resistor J respectively.
As a preferable scheme of the vehicle-mounted electronic communication system of the present invention, wherein: the signal strength detection module comprises a first follower, a second follower, a comparison resistor and a comparator, wherein one end of the first follower is a first signal input end, the output end of the first follower is connected with one end of the comparison resistor, the first follower is connected with the second follower in series, one end of the second follower is a second signal input end, the output end of the second follower is respectively connected with the negative electrode input end of the comparator and one end of a second current type DAC, the other end of the comparison resistor is respectively connected with the positive electrode input end of the comparator and one end of the first current type DAC, the output end of the comparator is a signal output end, and the other ends of the first current type DAC and the second current type DAC are grounded.
As a preferable scheme of the vehicle-mounted electronic communication system of the present invention, wherein: the signal acquisition unit further comprises a database module and a first power supply module, the database module is connected with the central processing unit in a one-way mode to receive and store the acquired signal intensity value, and the first power supply module is connected with the central processing unit in a one-way mode.
As a preferable scheme of the vehicle-mounted electronic communication system of the present invention, wherein: the signal receiving unit comprises a CPU processor, a second antenna, a second power supply module and a signal identification module, the second antenna is connected with the CPU processor through the signal identification module, the second power supply module is connected with the CPU processor, and the signal identification module is used for identifying communication signals received by the second antenna.
9. As a preferable scheme of the vehicle-mounted electronic communication system of the present invention, wherein: the communication method comprises the following steps:
step A: the first antenna collects external communication signals, and the signal intensity detection unit detects the intensity of the collected communication signals and sends the intensity to the central processing unit for judgment;
and B: if the acquired weak signal is judged, sending an instruction to an acquired signal amplifying unit, and amplifying the detected weak communication signal by the acquired signal amplifying unit;
and C: the amplified communication signal is received by the second antenna and then transmitted to the signal identification unit for signal identification;
step D: and the identified signal is sent to the CPU, and the CPU transmits the identified signal to the background terminal through the wireless communication transmission unit.
The invention has the beneficial effects that:
the invention provides a vehicle-mounted electronic communication system, which can realize signal acquisition, strength detection, strength amplification and signal transmission, has high communication efficiency, strong anti-interference capability and good communication quality, and the adopted acquired signal amplification unit can realize signal regulation and further improve the linearity of signals and the continuity of signal transmission, thereby ensuring higher communication efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic diagram of an inventive vehicle-mounted electronic communication system;
FIG. 2 is a schematic diagram of an acquisition signal amplification unit of the present invention;
FIG. 3 is a circuit diagram of a signal strength detecting unit according to the present invention;
FIG. 4 is a flow chart of a communication method of the present invention;
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
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 than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
In combination with 1-4, the invention provides a technical scheme that: a vehicle-mounted electronic communication system comprises a signal acquisition unit 1, a signal receiving unit 2 and a wireless communication transmission unit 3, wherein the signal acquisition unit 1 is connected with the signal receiving unit 2 in a two-way mode, the signal receiving unit 2 is connected with a background terminal 4 through the wireless communication transmission unit 3, and the signal acquisition unit 1 comprises a central processing unit 5, a signal acquisition module 6, a first antenna 7, a signal intensity detection unit 8, an acquired signal amplification unit 9, a database unit 10 and a first power module 11; the first antenna 7 is connected with a central processing unit 5 through a signal acquisition module 6, and the central processing unit 5 is respectively connected with a signal intensity detection unit 8, an acquired signal amplification unit 9, a database unit 10 and a first power module 11; the system comprises a signal acquisition unit, a signal intensity detection unit, a central processing unit and a database unit, wherein the signal acquisition unit acquires an external communication signal through a first antenna, the signal intensity detection unit is used for detecting the intensity of the acquired communication signal and sending the intensity to the central processing unit for judgment, the acquired signal amplification unit is used for amplifying the detected weak communication signal, and the database unit is used for storing the acquired signal intensity value; the wireless communication transmission unit 3 comprises a ZigBee transmission unit, a Beidou communication unit and a WIFI transmission unit.
The signal receiving unit 2 includes a CPU processor 12, a second antenna 13, a second power module 14 and a signal identification unit 15, the second antenna 13 is connected to the CPU processor 12 through the signal identification unit 15, the second power module 14 is connected to the CPU processor 12, wherein the signal identification unit 15 is configured to identify a communication signal received by the second antenna.
In the invention, the acquisition signal amplification unit comprises a field effect transistor A1C, a field effect transistor B2C, an operational amplifier A1D and an operational amplifier B2D, wherein the grid electrode of the field effect transistor A1C is respectively connected with one end of a resistor A1a and one end of a capacitor A1B, the other end of the capacitor A1B is grounded, the drain electrode of the field effect transistor A1C is connected with the source electrode of a field effect transistor B2C, the source electrode of the field effect transistor A1C is respectively connected with one end of a resistor C3a and one end of a capacitor D4B, the drain electrode of the field effect transistor B2C is grounded, the grid electrode is connected with one end of a capacitor B2B, the other end of the capacitor B2B is respectively connected with one end of a resistor B2a, one end of a capacitor C3B and one end of a resistor D4a, the positive electrode of the operational amplifier A1a is respectively connected with one end of a resistor E5a and the other end of a capacitor D4a, the negative electrode of the operational amplifier A1a is respectively connected with one end of a resistor F6a and the other end of the resistor G7a, the output end of the operational amplifier A1d is respectively connected with the other end of the resistor G7a and one end of the resistor H8a, the positive electrode of the operational amplifier B2d is respectively connected with the other end of the resistor H8a, one end of the capacitor E5B and one end of the resistor I9a, the negative electrode of the operational amplifier B2d is grounded, and the output end of the operational amplifier B2d is respectively connected with the other end of the resistor I9a, the other end of the capacitor E5B and one end of the resistor J10 a. The signal acquisition amplifying unit adopted by the invention can realize signal adjustment, and further improves the linearity of the signal and the continuity of signal transmission, thereby improving the communication efficiency.
In the invention, the signal strength detection unit 8 comprises a first follower 16, a second follower 17, a comparison resistor 18 and a comparator 19, wherein one end of the first follower 16 is a first signal input end, the output end of the first follower 16 is connected with one end of the comparison resistor 18, the first follower 16 is connected with the second follower 17 in series, one end of the second follower 17 is a second signal input end, the output end of the second follower 17 is respectively connected with the negative electrode input end of the comparator 19 and one end of a second current-type DAC20, the other end of the comparison resistor 18 is respectively connected with the positive electrode input end of the comparator 19 and one end of a first current-type DAC21, the output end of the comparator 19 is a signal output end, and the other ends of the first current-type DAC21 and the second current-type DAC20 are grounded. The signal intensity detection unit adopted by the invention can realize the detection of the peak value or the valley value of the signal circuit with low cost, has high detection precision and further improves the control efficiency.
The communication method of the invention comprises the following steps:
A. the first antenna collects external communication signals, and the signal intensity detection unit detects the intensity of the collected communication signals and sends the intensity to the central processing unit for judgment;
B. if the acquired weak signal is judged, sending an instruction to an acquired signal amplifying unit, and amplifying the detected weak communication signal by the acquired signal amplifying unit;
C. the amplified communication signal is received by the second antenna and then transmitted to the signal identification unit for signal identification;
D. and the identified signal is sent to the CPU processor, and the CPU processor transmits the identified signal to the background terminal through the wireless communication transmission unit.
In conclusion, the invention has simple working principle, can realize signal acquisition, strength detection, strength amplification and signal transmission, and has high communication efficiency, strong anti-interference capability and good communication quality.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (2)
1. A vehicle-mounted electronic communication system is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the signal acquisition unit (1), the said signal acquisition unit (1) connects to the signal receiving unit (2) bidirectionally;
the wireless communication transmission unit (3), the signal receiving unit (2) is connected with the background terminal (4) through the wireless communication transmission unit (3), the signal acquisition unit (1) comprises a signal acquisition module (6), a first antenna (7) and a central processing unit (5), the first antenna (7) is connected with the central processing unit (5) through the signal acquisition module (6), the signal acquisition module (6) acquires external communication signals through the first antenna (7) and transmits the external communication signals to the central processing unit (5), the signal acquisition unit (1) further comprises a signal intensity detection module (8) and an acquired signal amplification module (9), the signal intensity detection module (8) is connected with the acquired signal amplification module (9) through the central processing unit (5), and the signal intensity detection module (8) is used for detecting the intensity of the acquired communication signals, the signal acquisition and amplification module (9) is used for amplifying the detected weak communication signal, the signal acquisition and amplification module (9) comprises a field effect transistor A (1C), a field effect transistor B (2C), an operational amplifier A (1D) and an operational amplifier B (2D), the grid electrode of the field effect transistor A (1C) is respectively connected with one end of a resistor A (1a) and one end of a capacitor A (1B), the other end of the capacitor A (1B) is grounded, the drain electrode of the field effect transistor A (1C) is connected with the source electrode of the field effect transistor B (2C), the source electrode of the field effect transistor A (1C) is respectively connected with one end of a resistor C (3a) and one end of a capacitor D (4B), the drain electrode of the field effect transistor B (2C) is grounded, and the grid electrode is connected with one end of a capacitor B (2B), the other end of the capacitor B (2B) is respectively connected with one end of a resistor B (2a), one end of a capacitor C (3B) and one end of a resistor D (4a), the anode of the operational amplifier A (1D) is respectively connected with one end of a resistor E (5a) and the other end of a capacitor D (4B), the cathode of the operational amplifier A (1D) is respectively connected with one end of a resistor F (6a) and one end of a resistor G (7a), the other end of the resistor F (6a) is connected with the other end of the resistor E (5a) and is grounded, the output end of the operational amplifier A (1D) is respectively connected with the other end of the resistor G (7a) and one end of a resistor H8a, the anode of the operational amplifier B (2D) is respectively connected with the other end of a resistor H (8a), one end of the capacitor E (5B) and one end of a resistor I (9a), the cathode of the operational amplifier B (2D) is grounded, and the output end of the operational amplifier B (2D) is respectively connected with the other end of a resistor I (9a) and the other end of the capacitor D, The signal intensity detection module (8) comprises a first follower (16), a second follower (17), a comparison resistor (18) and a comparator (19), one end of the first follower (16) is a first signal input end, the output end of the first follower (16) is connected with one end of the comparison resistor (18), the first follower (16) is connected with the second follower (17) in series, one end of the second follower (17) is a second signal input end, the output end of the second follower (17) is respectively connected with the negative electrode input end of the comparator (19) and one end of a second current type DAC (20), the other end of the comparison resistor (18) is respectively connected with the positive electrode input end of the comparator (19) and one end of a first current type DAC (21), and the output end of the comparator (19) is a signal output end, the other ends of the first current-mode DAC (21) and the second current-mode DAC (20) are both grounded, the signal acquisition unit (1) also comprises a database module (10) and a first power supply module (11), the database module (10) is connected with the central processing unit (5) in a one-way to receive and store the collected signal intensity value, the first power supply module (11) is connected with the central processing unit (5) in a one-way mode, the signal receiving unit (2) comprises a CPU processor (12), a second antenna (13), a second power supply module (14) and a signal identification module (15), the second antenna (13) is connected with the CPU processor (12) through a signal identification module (15), the second power supply module (14) is connected with the CPU processor (12), the signal identification module (15) is used for identifying the communication signal received by the second antenna (13).
2. A communication method of the in-vehicle electronic communication system according to claim 1, wherein: the communication method comprises the following steps:
step A: the first antenna collects external communication signals, and the signal intensity detection unit detects the intensity of the collected communication signals and sends the intensity to the central processing unit for judgment;
and B: if the acquired weak signal is judged, sending an instruction to an acquired signal amplifying unit, and amplifying the detected weak communication signal by the acquired signal amplifying unit;
and C: the amplified communication signal is received by the second antenna and then transmitted to the signal identification unit for signal identification;
step D: and the identified signal is sent to the CPU, and the CPU transmits the identified signal to the background terminal through the wireless communication transmission unit.
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| CN201911411734.8A CN111130579B (en) | 2019-12-31 | 2019-12-31 | Vehicle-mounted electronic communication system and communication method |
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| CN111884737A (en) * | 2020-07-29 | 2020-11-03 | 苏州浪潮智能科技有限公司 | Anti-interference computer electronic communication system |
| CN112821967B (en) * | 2021-01-07 | 2022-08-16 | 同方电子科技有限公司 | Handheld wide-band electromagnetic environment monitoring device |
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| CN206226427U (en) * | 2016-12-14 | 2017-06-06 | 北京中天智汉科技有限责任公司 | A kind of novel high-power communication module |
| CN107547095B (en) * | 2017-10-16 | 2019-06-28 | 深圳匡合智能有限公司 | A kind of implementation method of vehicle-mounted networking device |
| CN107633189A (en) * | 2017-10-27 | 2018-01-26 | 广州晨控自动化科技有限公司 | A kind of remote low frequency RF ID demodulator circuits based on discrete device |
| CN107769812B (en) * | 2017-10-31 | 2019-10-15 | 乐普医学电子仪器股份有限公司 | A kind of wireless telecommunication system for implantable medical devices |
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