CN101620773A - Carrier wave wireless repeater - Google Patents
Carrier wave wireless repeater Download PDFInfo
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- CN101620773A CN101620773A CN200910094778A CN200910094778A CN101620773A CN 101620773 A CN101620773 A CN 101620773A CN 200910094778 A CN200910094778 A CN 200910094778A CN 200910094778 A CN200910094778 A CN 200910094778A CN 101620773 A CN101620773 A CN 101620773A
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- carrier wave
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Abstract
The invention relates to a carrier wireless repeater for a low-voltage carrier wave concentrated meter reading system. The repeater comprises a sealed box body formed by a metal bottom casing and a front cover made of nonmetal material; the box body is internally provided with a main circuit board, a 2.4GHz radio frequency processing unit, a build-in directive antenna and a power cord interface; the outside of the box body is provided with an omnidirectional antenna interface; a transformer, a switch power assembly and a processor chip are mounted on the main circuit board; and the 2.4GHz radio frequency processing unit comprises a radio frequency processing chip CC2500, a radio frequency amplifying chip CC2591 and a crystal thermostatic circuit for stabilizing frequency. Carrier signals is processed by a U3, amplified by a carrier power and coupled with an external circuit through the power cord by T4; the carrier signals on the power cord are received by a frequency selection circuit formed by T4, CC11, CC13, L3, L4 and NC3. The carrier wireless repeater realizes one-point-to-multi-points and point-to-point data relay and carries out long-distance data wireless exchange and transmission among different substation power supply regions with low cost and high efficiency.
Description
Technical field
The invention belongs to the carrier wave wireless repeater that a kind of low voltage power line carrier uses in checking meter.
Background technology
Reply department of State Grid and the electric power enterprise user demand urgent day by day to the centralized automatic meter-reading management system, an application as mechanics of communication, the power carrier communication technology formed certain market scale in China from real appearance in recent years up till now, had experienced rapid developing stage from the technical research to the application.For solving " Every household has an ammeter " problem, the low-voltage power line automatic data logging is the preferably selection that is implemented to the family service, and its value is not have and drops into or low the input, just can increase the commercial value of low-voltage network greatly.Thus, the line of electric force automatic meter reading system has obtained using widely.
Yet, carrier communication is based on the technology that line of electric force is a carrier, line of electric force is used for carrying high-power electric energy, extremely be not suitable for communication, in the process of large-scale application, defective and deficiency that power line carrier communication always occurs, in same zone that becomes power supply, use a concentrator, be in charge of affiliated carrier electric energy meter by concentrator, but because certain bar branch line too far can't manage from concentrator, or close on a less power supply sub-district is arranged, amount is less when being not suitable for disposing concentrator more in addition, use wireless solution, discrete ammeter is pooled in same the concentrator range of management, will receives good effect, a kind of desirable solution is provided for applying of carrier meter reading system.
Open 2.4G wireless application technology is more universal, and carrier communication is also used in fields such as electricity meter-readings to some extent, does not see application as yet but wireless and ZAP mixing are applied to low-voltage power user automatic meter reading system.
Summary of the invention
Purpose of the present invention is exactly to propose a kind of repeater based on seamless link between 2.4GHz wireless technology and carrier communication realization power line carrier and the radio communication, the communication protocol that carrier communication use and carrier electric energy meter are fully compatible, and its adding and removing to the not influence of original kilowatt meter reading-out system working method.
This carrier wave wireless repeater that is used for the low pressure carrier wave automatic meter reading system that the present invention proposes, it is characterized in that it has metal drain pan and nonmetallic materials to constitute the seal case that protecgulum is combined into, and is equipped with main circuit board, 2.4GHz RF processing unit, built-in directional antenna and electric source line interface in the casing; Casing has the installation omnidirectional antenna interface outward; Transformer is installed on the main circuit board, the Switching Power Supply assembly, processor chips, the 2.4GHz RF processing unit comprises radio frequency processing chip CC2500, radio frequency amplification chip CC2591 and is used for the crystal constant-temperature circuit of stabilized frequency; Carrier signal is handled by U3 after carrier power is coupled by power lead and outside line by T4 after amplifying; Carrier signal on the power lead receives by the selective frequency amplifier circuit that T4, CC11, CC13, CC15, L3, L4, NC3 form.
The mounting bracket that can easily repeater be fixed on wire pole or the buildings is arranged on the metal drain pan.
Omnidirectional antenna and built-in directional antenna antenna for selecting to use, use omnidirectional antenna to realize that other repeaters with many built-in directional antennas of use carry out the data relaying of point-to-multipoint, use built-in directional antenna to realize forming point-to-point data relaying with another same repeater.
Device is embedded with and can carries out communication software mutual trunking traffic, compatible mutually with carrier communication with carrier electric energy meter and carrier wave concentrator.
The controlled power circuit of controller is housed in the device, and behind the microcontroller power cutoff, switching power supply resets automatically after turn-offing 10 seconds, realizes that repeater automatically resets.
Make when device is built-in with temperature variation that the wireless frequency of repeater can steady operation, to the constant temperature control circuit of crystal.
Characteristics of the present invention are to use round-the-clock contour structures, casing half with aluminium alloy compression casting moulding, selectable built-in aerial and external antenna are arranged, when using built-in aerial, repeater is an apparatus for sealing, only needs connection 220v AC power, the other repeater of antenna alignment to get final product work.
Repeater has two kinds of networking modes, the a pair of repeater of point-to-point use, when point-to-multipoint is used, it is main that a repeater is arranged, use omnidirectional antenna, other subsets use directional antenna to be connected with main equipment, and repeater has fixing mailing address, and the repeater that has only the address to be consistent just can respond trunking traffic.
Realized that different power transformations supply the length of information such as power consumption, network load situation between the radio area apart from switched wireless and transmission low-cost high-efficiency of the present invention.
Description of drawings
Fig. 1 is a structural drawing of the present invention.
Fig. 2 is that synoptic diagram is used in networking of the present invention.
Fig. 3 is primary processor of the present invention and carrier communication acp chip circuit theory diagrams.
Fig. 4 is that 2.4GHz wireless receiving and dispatching of the present invention is handled and the amplification module schematic diagram.
Fig. 5 is that carrier wave of the present invention receives resonance amplification and emission amplifying circuit schematic diagram.
Fig. 6 is three-phase supply power supply of the present invention and rectification circuit figure.
Fig. 7 is switch voltage-stabilizing circuit of the present invention and interface level match circuit.
Embodiment
Figure 1 shows that the structural drawing of carrier wave wireless repeater, the protecgulum H that repeater is made of the drain pan B and the nonmetallic materials of aluminium alloy compression casting is combined into the one-piece construction of sealing, and this structure prevents that effectively water droplet and dust from entering enclosure interior.A can be fixed to repeater on wire pole or the buildings easily for be connected to the mounting bracket on the drain pan with bolt.D is that power supply inserts, and can connect 380V three-phase alternating-current supply or 220V single phase poaer supply, and carrier signal is by power lead and outside line coupling, and C is external omnidirectional antenna, uses when having only as the point-to-multipoint delivery main contact, blocks feeder hole with bolt under other situations.E is the main circuit board of repeater, and transformer is installed on it, Switching Power Supply assembly, electronic devices and components such as processor chips.F is the 2.4GHz RF processing unit, comprises that radio frequency processing chip CC2500, radio frequency amplify chip CC2591 and be used for the crystal constant-temperature circuit of stabilized frequency.G is the micro-strip antenna array that is etched on the pcb board, because shielding and the reflex of drain pan B, built-in aerial G has one-way radiation, and its wave radiation direction is the direction of K indication.H is nonmetallic materials, can penetrate electromagnetic wave.
Fig. 2 is that synoptic diagram is used in the networking of carrier wave wireless repeater, and as an example, A, B, C, D, E are the power supply area that electrical network covers among the figure, and 1,2,3,4,5 are positioned at repeater of the present invention.A, B, C are the zone of same transformer-supplied, and the carrier meter reading concentrator is installed near the transformer.D, E are two independently transformer-supplied zones.Because zone C is far away from concentrator, the electric energy meter in concentrator copy reading C district is difficulty comparatively, at the edge of A and C repeater 1,2 is installed and is used point-to-point connection, includes zone C in the concentrator management, same principle, D, E are included in the range of management of concentrator by repeater 3,4,5.Just repeater 3 is configured to main contact, uses omnidirectional antenna, and 4,5 are configured to from contact, use built-in directional antenna, the direction of antenna alignment 3.
Because repeater uses the communication protocol of carrier electric energy meter, for concentrator, repeater and electric energy meter are equal to, and not needing to revise software function can seamless access network.As an example, the carrier signal that concentrator sends arrives repeater 3 by line of electric force, when the address conforms to repeater 3, repeater 3 sends packet wirelessly, when the address of repeater 4 was arranged in the wireless data packet, repeater 4 converted packet to carrier signal and is forwarded to region D, when the address of repeater 5 is arranged in the wireless data packet, repeater 5 converts packet to carrier signal and is forwarded to area E, and the carrier electric energy meter in region D, the E just can be visited by concentrator like this.
Fig. 3 is carrier wave wireless repeater primary processor and carrier communication acp chip U3 and peripheral circuit, and chip comprises the processing unit that is of carrier communication module and 8051 compatibilities, and has built-in clock circuit, and calendar time can be provided.BFP1 is that centre frequency is the crystal filter of 480KHz, is used for carrier wave and receives frequency-selecting, and BAT1 is the 3.6V battery, for clock provides uninterrupted power source.DL1-DL5 position light emitting diode is used to indicate the duty and the communications status of repeater.
Fig. 4 is that carrier wave wireless repeater 2.4GHz wireless receiving and dispatching is handled and the amplification module schematic diagram.UC1 is the 2.4GHz signal processing chip among the figure, and model is CC2500, is used to handle radiofrequency signal, and with the processor swap data.UC2 is that chip CC2591 is amplified in the transmitting-receiving of 2.4GHz; Use the communication distance of CC2500 that 100m is only arranged, be used CC2591 after communication distance can reach more than the 3000m.RM1, RM2, Rt constitute constant-temperature circuit, and XC1 provides thermostatic control for crystal, keeps the high stability of its frequency.JKC1 is a signaling interface, and with the processor swap data, JKC2 provides power supply and thermostatic control interface, JKC3 position antennal interface.Built-in aerial directly inserts this interface, and external antenna joins with it by feeder line.
Fig. 5 is that carrier wave wireless repeater carrier wave receives resonance amplification and emission amplifying circuit schematic diagram.NC1, NC2, PC1, PC2 form the carrier power amplifying circuit, and the carrier signal of exportable 2W/120kHz is sent into line of electric force.CC11, CC13, CC15, L3, L4, NC3 form selective frequency amplifier circuit, and the reception that is used for carrier signal is amplified.T4 carrier wave coupling transformer is responsible for carrier signal is combined with line of electric force.
Fig. 6 is power supply of carrier wave wireless repeater three-phase supply and rectification circuit figure.T1, T2, T3 are power transformer among the figure, are designed to the transformer of 380V input capability, and real work is at the 220V state, stabilivolt Z2 punctures when 380V power circuit wrong, the NC6 output signal is to microprocessor, and processor sends warning, till correcting wiring.Carrier signal is coupled on the 380V line of electric force by T4, CC8, CC9, CC10.RV1-RV6 is used to prevent lightning surge.
Fig. 7 is carrier wave wireless repeater switch voltage-stabilizing circuit and interface level match circuit.U1 is the Switching Power Supply control chip, be operated in the 500kHz decompression mode, transformer is exported rectifier power source 24V step-down supply carrier processor for the 5V stable dc power supply, the 5V power supply further is reduced to 3.3V through U7 low-dropout regulator LM1117, and the work of radio frequency processing module is provided.Q1-Q4 is used for the slow startup and the controllable power reset function of processor of power supply.Processor can be controlled the base stage of Q4 when running into the unusual condition that can't handle, allow power supply quit work, and after this restarts power supply after the EP3 capacitance voltage rises to the Z1 voltage breakdown, and this process is about 10 seconds.U6 and U8 are out the driving gate of leakage, are used to mate the level between 5V processor and 3.3V radio-frequency module.
Claims (6)
1, a kind of carrier wave wireless repeater that is used for the low pressure carrier wave automatic meter reading system, it is characterized in that it has metal drain pan and nonmetallic materials to constitute the seal case that protecgulum is combined into, and is equipped with main circuit board, 2.4GHz RF processing unit, built-in directional antenna and electric source line interface in the casing; Casing has the installation omnidirectional antenna interface outward; Transformer is installed on the main circuit board, the Switching Power Supply assembly, processor chips, the 2.4GHz RF processing unit comprises radio frequency processing chip CC2500, radio frequency amplification chip CC2591 and is used for the crystal constant-temperature circuit of stabilized frequency; Carrier signal is handled by U3 after carrier power is coupled by power lead and outside line by T4 after amplifying; Carrier signal on the power lead receives by the selective frequency amplifier circuit that T4, CC11, CC13, CC15, L3, L4, NC3 form.
2, the carrier wave wireless repeater that is used for the low pressure carrier wave automatic meter reading system according to claim 1 is characterized in that the mounting bracket that can easily repeater be fixed on wire pole or the buildings is arranged on the metal drain pan.
3, the carrier wave wireless repeater that is used for the low pressure carrier wave automatic meter reading system according to claim 1, it is characterized in that described omnidirectional antenna and built-in directional antenna antenna for selecting to use, use omnidirectional antenna to realize that other repeaters with many built-in directional antennas of use carry out the data relaying of point-to-multipoint, use built-in directional antenna to realize forming point-to-point data relaying with another same repeater.
4, the carrier wave wireless repeater that is used for the low pressure carrier wave automatic meter reading system according to claim 1, it is characterized in that it is embedded with carrier electric energy meter and carrier wave concentrator carries out communication software mutual trunking traffic, compatible mutually with carrier communication.
5, the carrier wave wireless repeater that is used for the low pressure carrier wave automatic meter reading system according to claim 1, it is characterized in that it is equipped with the controlled power circuit of controller, behind the microcontroller power cutoff, switching power supply resets automatically after turn-offing 10 seconds, realizes that repeater automatically resets.
6, the carrier wave wireless repeater that is used for the low pressure carrier wave automatic meter reading system according to claim 1, it is characterized in that making when it is built-in with temperature variation the wireless frequency of repeater can steady operation, to the constant temperature control circuit of crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910094778A CN101620773A (en) | 2009-07-29 | 2009-07-29 | Carrier wave wireless repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910094778A CN101620773A (en) | 2009-07-29 | 2009-07-29 | Carrier wave wireless repeater |
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| CN101620773A true CN101620773A (en) | 2010-01-06 |
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| CN200910094778A Pending CN101620773A (en) | 2009-07-29 | 2009-07-29 | Carrier wave wireless repeater |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647206A (en) * | 2011-12-31 | 2012-08-22 | 上海通号轨道交通工程技术研究中心有限公司 | Carrier communication system with contact systems |
| CN103051369A (en) * | 2012-12-28 | 2013-04-17 | 成都泰格微电子研究所有限责任公司 | Wireless ad hoc network-based wireless repeater |
| CN104579427A (en) * | 2015-01-12 | 2015-04-29 | 国家电网公司 | Power wireless communication system and communication method |
| CN109617561A (en) * | 2018-11-23 | 2019-04-12 | 国网北京市电力公司 | Signal acceptance method and device |
| CN111323808A (en) * | 2018-12-14 | 2020-06-23 | 昆明天龙经纬电子科技有限公司 | Nuclear radiation sensor with radioactive source-free self-inspection function |
-
2009
- 2009-07-29 CN CN200910094778A patent/CN101620773A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647206A (en) * | 2011-12-31 | 2012-08-22 | 上海通号轨道交通工程技术研究中心有限公司 | Carrier communication system with contact systems |
| CN102647206B (en) * | 2011-12-31 | 2014-12-03 | 上海通号轨道交通工程技术研究中心有限公司 | Carrier communication system with contact systems |
| CN103051369A (en) * | 2012-12-28 | 2013-04-17 | 成都泰格微电子研究所有限责任公司 | Wireless ad hoc network-based wireless repeater |
| CN104579427A (en) * | 2015-01-12 | 2015-04-29 | 国家电网公司 | Power wireless communication system and communication method |
| CN109617561A (en) * | 2018-11-23 | 2019-04-12 | 国网北京市电力公司 | Signal acceptance method and device |
| CN111323808A (en) * | 2018-12-14 | 2020-06-23 | 昆明天龙经纬电子科技有限公司 | Nuclear radiation sensor with radioactive source-free self-inspection function |
| CN111323808B (en) * | 2018-12-14 | 2023-08-01 | 昆明天龙经纬电子科技有限公司 | Nuclear radiation sensor with self-checking function without radioactive source |
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Open date: 20100106 |