CN104659909A - Communication equipment and communication system - Google Patents
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- CN104659909A CN104659909A CN201410494456.8A CN201410494456A CN104659909A CN 104659909 A CN104659909 A CN 104659909A CN 201410494456 A CN201410494456 A CN 201410494456A CN 104659909 A CN104659909 A CN 104659909A
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Abstract
The invention discloses communication equipment and a communication system. The communication equipment comprises a power supply module, a filtering system and at least two communication modules, wherein each communication module can communicate with other communication equipment arranged in areas with poor GPRS signal cover through wireless private network communication units; transmitted and received signals of the wireless private network communication units of different modules are filtered through the filtering system. Therefore, other communication equipment can be placed in different positions in the areas with poor GPRS signal cover, at least two pieces of electric equipment in the areas with poor GPRS signal cover can be accessed to a GPRS network by only placing one piece of the communication equipment disclosed by the invention in the areas with GPRS signal cover, and thus data communication of the areas with poor GPRS signal cover can be achieved with relatively low cost.
Description
Technical field
The present invention relates to communication technical field, more particularly, relate to a kind of communication equipment and communication system.
Background technology
In recent years, along with quick propelling and the development of intelligent grid, the scale of electrical network is increasing, also more and more higher to the requirement of automatic operating level, particularly power distribution automation, load management automation, electric power collection is copied to automation and power dispatching automation etc. and is proposed higher requirement.And in these automated systems, data communication is that its important technology supports, it is one of key realizing Automation of Electric Systems.
GPRS technology has the distinguishing features such as networking is simple, flexible, access is convenient, running cost is low, can meet the application requirement of electrical production in the real-time, reliability, fail safe etc. of system.In electrical production practical application, GPRS technology has been widely used in electrical power distribution automatization system, AMRS, load management system and dispatch automated system etc., create larger mixed economy interests and good social benefit, obtain the generally approval of electric power system.
But, due to the wide range of electric power system and device distribution, some is located in an outlying district, as the basement etc. of desert area, remote mountain area or City Building, GPRS signal do not cover or signal more weak, part acnode cannot communicate, as being arranged on concentrator, the platform district table of merit rating of basement, and remote mountain areas is without the load management terminal, Source of Gateway Meter etc. of GPRS quorum sensing inhibitor, the communication issue of these key equipments is difficult to solve, the production of electric power system is affected greatly with management, increases the costs such as the human and material resources of electric power enterprise simultaneously.Therefore, need a kind of communication equipment or communication system, by the transfer of data of GPRS signal defective region to the good region of GPRS quorum sensing inhibitor, and, due to the impact of the factors such as geographical environment, be not that the region that each GPRS quorum sensing inhibitor is good has the position being applicable to laying communication equipment, cause needing higher cost could realize the data communication of GPRS quorum sensing inhibitor defective region, therefore, the data communication how realizing GPRS signal defective region at lower cost becomes problem demanding prompt solution.
Summary of the invention
The object of this invention is to provide a kind of communication equipment and communication system, to realize the data communication realizing GPRS signal defective region at lower cost.
For achieving the above object, the invention provides following technical scheme:
A kind of communication equipment, comprising: power module, filtering system and at least two communication modules; Described communication module comprises:
Wireless private network communication unit, for receiving analog signal by described filtering system from wireless private network communication channel, is encapsulated as the first serial data after described analog signal is converted to digital signal, sends described first serial data to control unit; Or, receive the first serial data that described control unit sends, after described first serial data being converted to analog signal, send analog signal by described filtering system to described wireless private network communication channel;
Described control unit, for receiving the first serial data that described wireless private network communication unit sends, data check is carried out to described first serial data, and when verification succeeds, described first serial data is resolved, and be the second serial data by resolving the data encapsulation obtained, send described second serial data to GPRS communication unit; Or receiving the second serial data that described GPRS communication unit sends, resolve described second serial data, is the first serial data by resolving the data encapsulation obtained, and sends described first serial data to described wireless private network communication unit;
Described GPRS communication unit, for receiving the second serial data that described control unit sends, resolves described second serial data, and is GPRS signal by resolving the data encapsulation obtained, and sends described GPRS signal; Or receiving GPRS signal, resolve the GPRS signal received, is the second serial data by resolving the data encapsulation obtained, and sends described second serial data to described control unit;
Described power module is used for powering for described filtering system and described at least two communication modules;
The analog signal that described filtering system is used for sending described wireless private network communication unit or receiving carries out filtering.
Above-mentioned communication equipment, preferably, the difference of the receive frequency of the wireless private network communication unit in the second communication module in the tranmitting frequency of the wireless private network communication unit in the first communication module in arbitrary two communication modules and described two communication modules is greater than predetermined threshold value.
Above-mentioned communication equipment, preferably, described predetermined threshold value is when making the Signal-to-Noise-and-distortion ratio of communication module reduce 3dB, the absolute value of the difference on the frequency of interference signal and useful signal.
Above-mentioned communication equipment, preferably, described filtering system is made up of some separate filters, wherein, corresponding two filters of each wireless private network communication unit, described two filters respectively to wireless private network communication unit transmit and Received signal strength carries out filtering.
Above-mentioned communication equipment, preferably, described filter is Surface Acoustic Wave Filter.
Above-mentioned communication equipment, preferably, described communication equipment comprises four communication modules.
Above-mentioned communication equipment, preferably, described filtering system is four multiplexers.
Above-mentioned communication equipment, preferably, described wireless private network communication unit is provided with antenna; Wherein, the height of the antenna of any two described wireless private network communication units is different.
A kind of communication system, comprising: the first communication equipment as above described in any one and at least two second communication equipment; Communication module one_to_one corresponding in second communication equipment and described first communication equipment.
Above-mentioned communication system, preferably, described second communication equipment comprises:
Serial communication modular, for receiving the 3rd serial data that power equipment sends, and to described 3rd serial data that control module transmission and reception are arrived; Or, receive the 3rd serial data that described control module sends, send described 3rd serial data to described power equipment;
Described control module, for receiving the 3rd serial data that described serial communication modular sends, data check is carried out to described 3rd serial data, and when verification succeeds, described 3rd serial data is resolved, and be the 4th serial data by resolving the data encapsulation obtained, send described 4th serial data to wireless private network communication module; Or, receive the 4th serial data that described wireless private network communication module sends, described 4th serial data is verified, and when verification succeeds, described 4th serial data is resolved, data encapsulation parsing obtained is the 3rd serial data, sends described 3rd serial data to serial communication modular;
Described wireless private network communication module, for receiving the 4th serial data that described control module sends, described 4th serial data is resolved, and is sent resolving after the data obtained are converted to analog signal to the communication module corresponding with described second communication equipment in described first communication equipment by wireless private network communication channel; Or, the analog signal that described first communication equipment, the communication module corresponding with described second communication equipment sends is received from wireless private network communication channel, after described analog signal is converted to digital signal, be encapsulated as the 4th serial data, send described 4th serial data to control module.
Known by above scheme, a kind of communication equipment that the application provides and communication system, arrange second communication equipment in the power equipment side of GPRS signal defective region, electric power data is converted to analog signal (i.e. wireless private network signal of communication), in GPRS signal coverage areas, the first communication equipment is set, this first communication equipment can comprise at least two communication modules, each communication module one_to_one corresponding second communication equipment, and the analog signal that the second communication equipment corresponding with this communication module sends can be received, and sent by GPRS communication network after being converted to GPRS signal, realize the data communication of GPRS signal defective region, thus the quantity of the first communication equipment of GPRS signal coverage areas can be reduced, thus the data communication of GPRS signal defective region can be realized at lower cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic diagram of the communication system that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of the communication module of the first communication equipment that Fig. 2 provides for the embodiment of the present invention;
The schematic diagram of the second communication equipment that Fig. 3 provides for the embodiment of the present invention;
The schematic diagram of the another kind of communication system that Fig. 4 provides for the embodiment of the present invention;
The schematic diagram of the control unit in the first communication equipment that Fig. 5 provides for the embodiment of the present invention.
Term " first ", " second ", " the 3rd " " 4th " etc. (if existence) in specification and claims and above-mentioned accompanying drawing are for distinguishing similar part, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so that the embodiment of the application described herein can be implemented with the order except illustrated here.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the schematic diagram of the communication system that Fig. 1 provides for the embodiment of the present invention, comprising:
First communication equipment 1 and at least two second communication equipment 2.
First communication equipment 1 comprises power module 11, filtering system 12 and at least two communication modules 13; Wherein, the schematic diagram of communication module 13 as shown in Figure 2, comprising:
Wireless private network communication unit 21, control unit 22 and GPRS communication unit 23; Wherein,
Wireless private network communication unit 21, for receiving analog signal by filtering system 12 from wireless private network communication channel, after described analog signal is converted to digital signal, is encapsulated as the first serial data, sends described first serial data to control unit 22; Or, receive the first serial data that described control unit 22 sends, after described first serial data being converted to analog signal, send analog signal by described filtering system 12 to described wireless private network communication channel.Wherein, the working frequency range of any two wireless private network communication units is different.
In embodiments of the present invention, the signal that filtering system 12 pairs of wireless private network communication units 21 send carries out filtering, with filtering or suppress described wireless private network communication unit 21 to launch signal outside working frequency range, carry stronger spurious signal in the signal preventing this wireless private network communication unit 21 from launching, and the frequency of this spurious signal drop on other wireless private network communication unit in the first communication equipment reception working frequency range in and interference is caused to the Signal reception of other wireless private network communication unit; Filtering system 12 also carries out filtering to the signal that wireless private network communication unit 21 receives, with filtering or suppress described wireless private network communication unit 21 to receive signal outside working frequency range, compared with high reject signal, the signal to noise ratio of this wireless private network communication unit is declined to prevent from being mingled with in Received signal strength receiving outside working frequency range, sensitivity decrease.
Control unit 22, for receiving the first serial data that described wireless private network communication unit 21 sends, data check is carried out to described first serial data, and when verification succeeds, described first serial data is resolved, and be the second serial data by resolving the data encapsulation obtained, send described second serial data to GPRS communication unit; Or receiving the second serial data that described GPRS communication unit sends, resolve described second serial data, is the first serial data by resolving the data encapsulation obtained, and sends described first serial data to described wireless private network communication unit.
The second serial data that GPRS communication unit 23 sends for receiving described control unit 22, resolves described second serial data, and is GPRS signal by resolving the data encapsulation obtained, and sends described GPRS signal; Or, receive GPRS signal from GPRS network, the GPRS signal received resolved, being the second serial data by resolving the data encapsulation obtained, sending described second serial data to described control unit 22.
Power module 11 is for powering for described filtering system 12 and described at least two communication modules 13.
Described filtering system is used for carrying out filtering to the signal of wireless private network communication transmission or the signal of reception.
Second communication equipment 2 is arranged on the power equipment side of GPRS quorum sensing inhibitor defective region.The schematic diagram of second communication equipment 2 as shown in Figure 3, comprising:
Serial communication modular 31, control module 32 and wireless private network communication module 33; Wherein,
The 3rd serial data that serial communication modular 31 sends for receiving power equipment, and to described 3rd serial data that control module 32 transmission and reception are arrived; Or, receive the 3rd serial data that described control module 32 sends, send described 3rd serial data to described power equipment.
The 3rd serial data that described control module 32 sends for receiving described serial communication modular 31, data check is carried out to described 3rd serial data, and when verification succeeds, described 3rd serial data is resolved, and be the 4th serial data by resolving the data encapsulation obtained, send described 4th serial data to wireless private network communication module 33; Or, receive the 4th serial data that described wireless private network communication module 33 sends, described 4th serial data is verified, and when verification succeeds, described 4th serial data is resolved, data encapsulation parsing obtained is the 3rd serial data, sends described 3rd serial data to serial communication modular 31.
Described wireless private network communication module 33, for receiving the 4th serial data that described control module 32 sends, described 4th serial data is resolved, and is sent resolving after the data obtained are converted to analog signal to the communication module corresponding with described second communication equipment in described first communication equipment 1 by wireless private network communication channel; Or, the analog signal that described first communication equipment 1, the communication module corresponding with described second communication equipment sends is received from wireless private network communication channel, after described analog signal is converted to digital signal, be encapsulated as the 4th serial data, send described 4th serial data to described control module 32.
A kind of communication system that the application provides, arranges second communication equipment in the power equipment side of GPRS signal defective region, electric power data is converted to analog signal (i.e. wireless private network signal of communication); In GPRS signal coverage areas, the first communication equipment is set, this first communication equipment can comprise at least two communication modules, each communication module one_to_one corresponding second communication equipment, and the analog signal that the second communication equipment corresponding with this communication module sends can be received, and sent by GPRS communication network after being converted to GPRS signal, realize the data communication of GPRS signal defective region.Further, the first communication equipment that the embodiment of the present invention provides, can communicate with at least two second communication equipment.Therefore, can be sidelong at the different power equipment of GPRS signal defective region and put second communication equipment, and only need to find a position to place the first communication equipment in GPRS signal coverage areas can by least two of GPRS signal defective region (concrete number is determined according to the number of the communication module in second communication equipment) power equipment access GPRS communication network, thus the quantity of the first communication equipment of GPRS signal coverage areas can be reduced, thus the data communication of GPRS signal defective region can be realized at lower cost.
In above-described embodiment, preferably, the difference of the receive frequency of the wireless private network communication unit in the second communication module in the tranmitting frequency of the wireless private network communication unit in the first communication module wherein in any two communication modules and described any two communication modules is greater than predetermined threshold value.
That is, for any two communication modules in described at least two communication modules, the difference of the receive frequency of the wireless private network communication unit in another communication module in the tranmitting frequency of the wireless private network communication unit in one of them communication module of these two communication modules and this two communication modules is greater than predetermined threshold value.
Optionally, described predetermined threshold value can be: when making the Signal-to-Noise-and-distortion ratio of communication module reduce 3dB, the absolute value of the difference on the frequency of interference signal and useful signal.
Wherein, predetermined threshold value can be determined by experiment.Specific experiment process can be:
Communication module receives useful signal, adjust the tranmitting frequency of interference signal source simultaneously, make the tranmitting frequency of interference signal source close to the reception operating frequency reception operating power of wireless private network communication unit (namely in communication module) of communication module, detect the Signal-to-Noise-and-distortion ratio of communication module.When the Signal-to-Noise-and-distortion ratio of communication module reduces 3dB, obtain the absolute value of the difference on the frequency of interference signal and useful signal, the absolute value of described difference on the frequency is described predetermined threshold value.
Carry stronger spurious signal in the signal preventing the first wireless private network communication unit from launching further, and the frequency of this spurious signal drop on other wireless private network communication unit in the first communication equipment reception working frequency range in and interference is caused to the Signal reception of other wireless private network communication unit.
In above-described embodiment, preferably, described filtering system is made up of, as shown in filtering system in Fig. 1 some separate filters.Wherein, corresponding two filters of each wireless private network communication unit, described two filters respectively to wireless private network communication unit transmit and Received signal strength carries out filtering.In the embodiment of the present invention, in filtering system, two filters corresponding to wireless private network communication unit can carry out integrated with corresponding wireless private network communication unit, to save the space of the first communication equipment.
Optionally, each filter in described filtering system can be Surface Acoustic Wave Filter.
As shown in Figure 4, described communication equipment comprises four communication modules to the schematic diagram of the another kind of communication system that the embodiment of the present invention provides.
Optionally, described filtering system can be four multiplexers, and now, described four communication modules can share an antenna.
Different from embodiment illustrated in fig. 1, in embodiment illustrated in fig. 1, the corresponding antenna of each communication module.And by four multiplexers in the embodiment of the present invention, four communication modules can share an antenna.How concrete four multiplexers carry out to the Received signal strength of each wireless private network communication unit and transmitting the common practise that filtering belongs to this area, repeat no more here.
In above-described embodiment, preferably, in order to reduce the signal disturbing between wireless private network communication unit further, in the embodiment of the present invention, the height of the antenna of any two wireless private network communication units is different.
In above-described embodiment, preferably, wireless private network communication module is 230MHz wireless private network communication module; Wireless private network communication unit is 230MHz wireless private network communication unit.
Optionally, because 230MHz wireless private network communication unit is half-duplex operation, so single 230MHz wireless private network communication unit can transmit-receive cofrequency, also can receive and dispatch alien frequencies; Illustrate the optional implementation of one of the operating frequency of each 230MHz wireless private network communication unit in four communication modules below.
When 230MHz wireless private network communication unit transmitting-receiving alien frequencies, the transmitting-receiving frequency of the 230MHz wireless private network communication unit in four communication modules can be respectively:
The transmission carrier frequency of the 230MHz wireless private network communication unit in first communication module: 230.525MHz;
The reception carrier frequency of the 230MHz wireless private network communication unit in first communication module: 223.525MHz;
The transmission carrier frequency of the 230MHz wireless private network communication unit in second communication module: 230.850MHz;
The reception carrier frequency of the 230MHz wireless private network communication unit in second communication module: 223.850MHz;
The transmission carrier frequency of the 230MHz wireless private network communication unit in third communication module: 231.225MHz;
The reception carrier frequency of the 230MHz wireless private network communication unit in third communication module: 224.225MHz;
The transmission carrier frequency of the 230MHz wireless private network communication unit in the 4th communication module: 231.650MHz;
The reception carrier frequency of the 230MHz wireless private network communication unit in the 4th communication module: 224.650MHz.
When 230MHz wireless private network communication unit transmit-receive cofrequency, the transmitting-receiving frequency of the 230MHz wireless private network communication unit in four communication modules can be respectively:
The sending and receiving carrier frequency of the 230MHz wireless private network communication unit in first communication module: 223.525MHz;
The sending and receiving carrier frequency of the 230MHz wireless private network communication unit in second communication module: 224.650MHz;
The sending and receiving carrier frequency of the 230MHz wireless private network communication unit in third communication module: 228.250MHz;
The sending and receiving carrier frequency of the 230MHz wireless private network communication unit in the 4th communication module: 231.650MHz.
In above-described embodiment, the schematic diagram of described control unit 22 as shown in Figure 5, can comprise:
First receives subelement 51, for receiving the first serial data that described wireless private network communication unit 21 sends;
First receives buffer memory subelement 52, for the first serial data that the first reception subelement 51 described in buffer memory receives;
First calculation process subelement 53, the first serial data for receiving buffer memory subelement 52 buffer memory to described first carries out data check, and when verification succeeds, described first serial data is resolved, and be the second serial data by resolving the data encapsulation obtained;
First sends buffer memory subelement 54, encapsulates for the first calculation process subelement 53 described in buffer memory the second serial data obtained;
First sends subelement 55, for sending the second serial data that described first sends buffer memory subelement 54 buffer memory.
Second receives subelement 56, for receiving the second serial data that described GPRS communication unit 23 sends;
Second receives buffer memory subelement 57, for the second serial data that the second reception subelement 56 described in buffer memory receives;
Second calculation process subelement 58, resolving for the second serial data receiving buffer memory subelement 57 buffer memory to described second, is the first serial data by resolving the data encapsulation obtained;
Second sends buffer memory subelement 59, encapsulates for the second calculation process subelement 58 described in buffer memory the first serial data obtained;
Second sends subelement 510, for sending the first serial data that described second sends buffer memory subelement 59 buffer memory to described wireless private network communication unit 21.
The embodiment of the present invention also provides a kind of communication equipment, and this communication equipment comprises power module, filtering system and at least two communication modules;
Described power module is used for for described filtering system and described at least two communication modules energising.
Described communication module can comprise:
Wireless private network communication unit, for receiving analog signal by described filtering system from wireless private network communication channel, after described analog signal is converted to digital signal, is encapsulated as the first serial data, sends described first serial data to control unit; Or, receive the first serial data that described control unit sends, after described first serial data being converted to analog signal, send analog signal by described filtering system to described wireless private network communication channel.Wherein, the working frequency range of any two wireless private network communication units is different.
Described control unit, for receiving the first serial data that described wireless private network communication unit sends, data check is carried out to described first serial data, and when verification succeeds, described first serial data is resolved, and be the second serial data by resolving the data encapsulation obtained, send described second serial data to GPRS communication unit; Or receiving the second serial data that described GPRS communication unit sends, resolve described second serial data, is the first serial data by resolving the data encapsulation obtained, and sends described first serial data to described wireless private network communication unit.
Described GPRS communication unit, for receiving the second serial data that described control unit sends, resolves described second serial data, and is GPRS signal by resolving the data encapsulation obtained, and sends described GPRS signal; Or receiving GPRS signal, resolve the GPRS signal received, is the second serial data by resolving the data encapsulation obtained, and sends described second serial data to described control unit.
Described filtering system is used for carrying out filtering to the transmission signal of wireless private network communication unit and Received signal strength.
In above-described embodiment, preferably, the difference of the receive frequency of the wireless private network communication unit in the second communication module in the tranmitting frequency of the wireless private network communication unit in the first communication module wherein in any two communication modules and described any two communication modules is greater than predetermined threshold value.
In above-described embodiment, preferably, described filtering system is made up of some separate filters, wherein, corresponding two filters of each wireless private network communication unit, described two filters respectively to wireless private network communication unit transmit and Received signal strength carries out filtering.
Optionally, described filter is Surface Acoustic Wave Filter.
In above-described embodiment, preferably, described communication equipment comprises four communication modules.
Optionally, described filtering system is four multiplexers.
In above-described embodiment, preferably, described wireless private network communication unit is provided with antenna; Wherein, the height of the antenna of any two wireless private network communication units is different.
In above-described embodiment, preferably, wireless private network communication module is 230MHz wireless private network communication module; Wireless private network communication unit is 230MHz wireless private network communication unit.
A kind of communication equipment that the embodiment of the present invention provides (for sake of convenience, hereinafter referred to as the first communication equipment), be arranged on GPRS signal coverage areas, comprise power module, filtering system and at least two communication modules, each communication module can be communicated with the second communication equipment being arranged on GPRS quorum sensing inhibitor defective region by wireless private network communication unit, wherein, the transmitting and receiving signal of the wireless private network communication unit of disparate modules all carries out filtering by filtering system, thus can be sidelong at the different power equipments of GPRS quorum sensing inhibitor defective region and put second communication equipment, and only need to place first communication equipment in GPRS signal coverage areas can by least two of GPRS quorum sensing inhibitor defective region (concrete number is determined according to the number of the communication module in the first communication equipment) power equipment access GPRS communication network, and the communication equipment identical with the second number of devices need not be placed in GPRS signal coverage areas, thus the quantity of the first communication equipment of GPRS signal coverage areas can be reduced, thus the data communication of GPRS signal defective region can be realized at lower cost.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a communication equipment, is characterized in that, comprising: power module, filtering system and at least two communication modules; Described communication module comprises:
Wireless private network communication unit, for receiving analog signal by described filtering system from wireless private network communication channel, is encapsulated as the first serial data after described analog signal is converted to digital signal, sends described first serial data to control unit; Or, receive the first serial data that described control unit sends, after described first serial data being converted to analog signal, send analog signal by described filtering system to described wireless private network communication channel;
Described control unit, for receiving the first serial data that described wireless private network communication unit sends, data check is carried out to described first serial data, and when verification succeeds, described first serial data is resolved, and be the second serial data by resolving the data encapsulation obtained, send described second serial data to GPRS communication unit; Or receiving the second serial data that described GPRS communication unit sends, resolve described second serial data, is the first serial data by resolving the data encapsulation obtained, and sends described first serial data to described wireless private network communication unit;
Described GPRS communication unit, for receiving the second serial data that described control unit sends, resolves described second serial data, and is GPRS signal by resolving the data encapsulation obtained, and sends described GPRS signal; Or receiving GPRS signal, resolve the GPRS signal received, is the second serial data by resolving the data encapsulation obtained, and sends described second serial data to described control unit;
Described power module is used for powering for described filtering system and described at least two communication modules;
The analog signal that described filtering system is used for sending described wireless private network communication unit or receiving carries out filtering.
2. communication equipment according to claim 1, it is characterized in that, the difference of the receive frequency of the wireless private network communication unit in the second communication module in the tranmitting frequency of the wireless private network communication unit in the first communication module in arbitrary two communication modules and described two communication modules is greater than predetermined threshold value.
3. communication equipment according to claim 2, is characterized in that, described predetermined threshold value is when making the Signal-to-Noise-and-distortion ratio of communication module reduce 3dB, the absolute value of the difference on the frequency of interference signal and useful signal.
4. the communication equipment according to claim 1-3 any one, it is characterized in that, described filtering system is made up of some separate filters, wherein, corresponding two filters of each wireless private network communication unit, described two filters respectively to wireless private network communication unit transmit and Received signal strength carries out filtering.
5. communication equipment according to claim 4, is characterized in that, described filter is Surface Acoustic Wave Filter.
6. the communication equipment according to claim 1-3 any one, is characterized in that, described communication equipment comprises four communication modules.
7. communication equipment according to claim 6, is characterized in that, described filtering system is four multiplexers.
8. the communication equipment according to claim 1-3 any one, is characterized in that, described wireless private network communication unit is provided with antenna; Wherein, the height of the antenna of any two described wireless private network communication units is different.
9. a communication system, is characterized in that, comprising: the first communication equipment as described in claim 1-8 any one and at least two second communication equipment; Communication module one_to_one corresponding in second communication equipment and described first communication equipment.
10. communication system according to claim 9, is characterized in that, described second communication equipment comprises:
Serial communication modular, for receiving the 3rd serial data that power equipment sends, and to described 3rd serial data that control module transmission and reception are arrived; Or, receive the 3rd serial data that described control module sends, send described 3rd serial data to described power equipment;
Described control module, for receiving the 3rd serial data that described serial communication modular sends, data check is carried out to described 3rd serial data, and when verification succeeds, described 3rd serial data is resolved, and be the 4th serial data by resolving the data encapsulation obtained, send described 4th serial data to wireless private network communication module; Or, receive the 4th serial data that described wireless private network communication module sends, described 4th serial data is verified, and when verification succeeds, described 4th serial data is resolved, data encapsulation parsing obtained is the 3rd serial data, sends described 3rd serial data to serial communication modular;
Described wireless private network communication module, for receiving the 4th serial data that described control module sends, described 4th serial data is resolved, and is sent resolving after the data obtained are converted to analog signal to the communication module corresponding with described second communication equipment in described first communication equipment by wireless private network communication channel; Or, the analog signal that described first communication equipment, the communication module corresponding with described second communication equipment sends is received from wireless private network communication channel, after described analog signal is converted to digital signal, be encapsulated as the 4th serial data, send described 4th serial data to control module.
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| CN106408907A (en) * | 2015-07-31 | 2017-02-15 | 深圳友讯达科技股份有限公司 | Dual-mode integrated wave trapper |
| CN109949560A (en) * | 2019-03-27 | 2019-06-28 | 青岛裕华电子科技有限公司 | Long-distance meter-reading system, auxiliary system and ancillary equipment therein |
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Application publication date: 20150527 |