CN104123831A - Signal conversion equipment of remote power meter reading system - Google Patents
Signal conversion equipment of remote power meter reading system Download PDFInfo
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- CN104123831A CN104123831A CN201410365988.1A CN201410365988A CN104123831A CN 104123831 A CN104123831 A CN 104123831A CN 201410365988 A CN201410365988 A CN 201410365988A CN 104123831 A CN104123831 A CN 104123831A
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Abstract
The invention relates to signal conversion equipment of a remote power meter reading system. The signal conversion equipment comprises an RS485 receiving and transmitting chip, an STM8CPU, an infrared modulation chip, an infrared demodulation chip, an infrared indicating lamp and an RS485 communication indicating lamp, wherein a group of receiving and transmitting ports are formed in the RS485 receiving and transmitting chip to the outside and are locally called by electric energy information acquisition equipment; a group of ports are respectively formed in each of the infrared modulation chip and the infrared demodulation chip to the outside and are used for interacting infrared signals with an electric energy meter; the STM8CPU is used for processing RS485 signals received by the RS485 receiving and transmitting chip and the infrared signals received by the infrared demodulation chip and performing signal transmission so as to realize data conversion under different signals; the infrared indicating lamp is used for indicating that whether the infrared demodulation chip is in a working state or not; the RS485 communication indicating lamp is used for indicating that whether the RS485 receiving and transmitting chip is in a working state or not. The signal conversion equipment can be mounted on the electric energy meter so as to convert signals, therefore, demands for acquiring the data are met, and various expenses are greatly lowered.
Description
Technical field
The invention belongs to the local communication technical field of power equipment, relate to a kind of RS485 interface of the acquiring electric energy information equipment that can realize power remote meter reading system to the signal conversion equipment of the local communication of the infrared interface of electric energy meter.
Background technology
Along with the propelling of the SG186 of State Grid Corporation of China Information System Project, electric system in all parts of the country is all in the construction of carrying out remote centralized meter-reading system.Within several years, the construction of remote centralized meter-reading system is all by the task of top priority that is electric power transformation.Along with carrying out of the construction of acquiring electric energy information system, various users under electricity market, as special change user, resident, industry and commerce user etc. all carry out the collection of energy data being incorporated to step by step this system, and the ammeter equipment matching with it and collection communication equipment are also in constantly progress and development.But the acquiring electric energy information equipment of remote centralized meter-reading system is all the RS485 interface adopting, employing be RS485 communication.But, under vast electricity market, also has very large a collection of ammeter equipment, they possess the whole abilitys to communicate except RS485 communication, but, owing to not possessing RS485 ability to communicate, therefore, these electric energy meters are difficult to directly and remote centralized meter-reading system communicates, and are therefore difficult to directly gather by remote centralized meter-reading system the data of these electric energy meters.But, need to expend a large amount of human and material resources and financial resources owing to these electric energy meters being changed into the electric energy meter that possesses RS485 communication capacity, therefore at short notice, also it can not be replaced to completely to the current research equipment that possesses RS485 communication capacity out.But, if by suitably transforming, these electric energy meters are there is meet communication capacity and the metering ability of acquiring electric energy information equipment requirement, will save a large amount of human and material resources and financial resources so.
Therefore, be badly in need of at present a kind ofly on existing electric energy meter, just can carrying out the equipment of the conversion of RS485 signal and infrared signal by being arranged on, thereby make acquiring electric energy information equipment can gather the data of existing electric energy meter.
Summary of the invention
The object of this invention is to provide the conversion equipment of a kind of RS485 signal of acquiring electric energy information equipment and the infrared signal of electric energy meter, it can be to the local infrared signal demodulation of electric energy meter.This equipment carries out signal conversion operations for the electric energy meter of the DLT645-1997 electric energy meter communication protocol with infrared communication mouth that meets power industry company standard, by the conversion of signal, acquiring electric energy information equipment can obtain the various energy datas of electric energy meter exactly by non-RS485 mode, as active energy indicating value, reactive energy indicating value, power, voltage, electric current etc. exchange data, thereby expenditure and Installation and Debugging burden that electric energy meter is changed are greatly saved.
For this reason, the invention provides following technical scheme: a kind of signal conversion equipment of power remote meter reading system, it comprises a RS485 transceiving chip, a STM8 CPU, an infrared modulation chip, an infrared demodulation chip, an infrared pilot lamp and a RS485 communication pilot lamp, described RS485 transceiving chip is open one group of transmitting-receiving port outwards, call acquiring electric energy information equipment this locality for described power remote meter reading system, described infrared modulation chip and infrared demodulation chip be outwards open one group of port respectively, for carrying out the mutual of infrared signal with electric energy meter, the infrared signal that the RS485 signal that described STM8 CPU receives for the treatment of described RS485 transceiving chip and described infrared demodulation chip receive is also carried out signal transmission, thereby realize the data-switching under unlike signal, whether described infrared pilot lamp is used to indicate described infrared demodulation chip in running order, whether described RS485 communication pilot lamp is used to indicate described RS485 transceiving chip in running order.
Further, wherein, described RS485 transceiving chip is SN65HVD3082E, and described STM8 CPU is STM8S003F3, and described infrared modulation chip and infrared demodulation chip are respectively IRM3638 and IR11-21C.
The signal conversion equipment of power remote meter reading system of the present invention can be arranged on the conversion of carrying out RS485 signal and infrared signal on electric energy meter, coordinate acquiring electric energy information equipment, complete the data acquisition of electric energy meter, thereby reduce the cost payout of electric energy meter data acquisition.And this conversion equipment installation is simple, easy to learn, easy to maintenance, is well suited for site operation and maintenance.
Brief description of the drawings
Fig. 1 is the schematic diagram of the signal conversion equipment of power remote meter reading system of the present invention.
Schematic diagram when Fig. 2 is the signal conversion equipment access power remote meter reading system of power remote meter reading system of the present invention.
The signal conversion equipment that Fig. 3 shows power remote meter reading system of the present invention converts RS485 signal to the signal conversion process of infrared signal.
The signal conversion equipment that Fig. 4 shows power remote meter reading system of the present invention converts infrared signal to the signal conversion process of RS485 signal.
Wherein, 1, RS485 transceiving chip; 2, STM8 CPU; 3, infrared modulation chip; 4, infrared demodulation chip; 5, infrared pilot lamp; 6, RS485 communication pilot lamp.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing, the content of embodiment is not the restriction to protection content of the present invention.
The present invention relates to a kind of signal conversion equipment of power remote meter reading system, it can realize the exchange of RS485 signal and infrared signal, thereby make acquiring electric energy information equipment can gather the data of the electric energy meter without RS485 communication capacity, greatly reduce the cost to existing electric energy meter transformation.
Fig. 1 shows the schematic diagram of the signal conversion equipment of power remote meter reading system of the present invention.As shown in Figure 1, the signal conversion equipment of power remote meter reading system of the present invention comprises a RS485 transceiving chip 1, STM8 CPU2, infrared modulation chip 3, infrared demodulation chip 4, infrared pilot lamp 5 and a RS485 communication pilot lamp 6.Described RS485 transceiving chip 1 can be the various chips that can realize RS485 communication, such as SN65HVD3082E.Described STM8 CPU2 can be STM8S003F3.Described infrared modulation chip 3 can be IRM3638.Described infrared demodulation chip 4 can be IR11-21C.Described IR11-21C be Taiwan Yi Guang company produce paster infrared transmitting tube in one.
In signal conversion equipment of the present invention, described RS485 transceiving chip 1 is open one group of transmitting-receiving port outwards, calls for acquiring electric energy information equipment this locality of described power remote meter reading system.That is, the RS485 port of described acquiring electric energy information equipment is connected with described RS485 transceiving chip 1, to send descending DLT645 communication packet to described RS485 transceiving chip 1, and receives the RS485 signal that RS485 transceiving chip 1 sends over.The outwards open one group of port of described infrared modulation chip 3, for carrying out the mutual of infrared signal with electric energy meter.That is, described infrared modulation chip 3 is connected with the infrared port of electric energy meter, thereby the infrared signal after modulation can be passed to electric energy meter.Described infrared demodulation chip 4 is also outwards opened one group of port, for carrying out the mutual of infrared signal with electric energy meter., described infrared demodulation chip 4 is also connected with the infrared port of electric energy meter, thereby can receive the infrared signal that described electric energy meter sends.The RS485 signal that described STM8 CPU2 receives for the treatment of described RS485 transceiving chip 1 also converts described RS485 signal to the square-wave signal of Transistor-Transistor Logic level, then be transferred to described infrared modulation chip 3, by described infrared modulation chip 3, the square-wave signal of described Transistor-Transistor Logic level be converted to the infrared modulation signal of 38KHz; Simultaneously thereby described STM8 CPU2 is also for the treatment of the infrared signal after described infrared demodulation chip 4 demodulation and convert the described infrared signal after demodulation to RS485 signal and realize the data-switching under unlike signal.Whether described infrared pilot lamp 5 is used to indicate described infrared demodulation chip 4 in running order, and for example, it can be diode pilot lamp.Whether described RS485 communication pilot lamp 6 is used to indicate described RS485 transceiving chip 1 in running order, and for example, it can be also diode pilot lamp.
The signal conversion equipment of power remote meter reading system of the present invention can carry out modulation and demodulation to infrared signal, and can realize the exchange of RS485 signal and infrared signal.This signal conversion equipment carries out signal conversion operations for meeting power industry company standard DLT645-1997 electric energy meter electric energy meter communication protocol, that have infrared communication mouth, by the conversion of signal, make acquiring electric energy information equipment can obtain exactly the various energy datas of electric energy meter by non-RS485 mode, as active energy indicating value, reactive energy indicating value, power, voltage, electric current etc. exchange data, thereby expenditure and Installation and Debugging burden that electric energy meter is changed are greatly saved.
Schematic diagram when Fig. 2 shows the signal conversion equipment access power remote meter reading system of power remote meter reading system of the present invention.As shown in Figure 2, the signal conversion equipment of power remote meter reading system of the present invention is connected between the acquiring electric energy information equipment and electric energy meter of power remote meter reading system.Under normal circumstances, this signal conversion equipment is arranged on electric energy meter.In the time of work, first described acquiring electric energy information equipment send to the descending DLT645 communication packet of RS485 signal form by 485 ports of himself the RS485 transceiving chip of described signal conversion equipment.Described RS485 transceiving chip receives after described DLT654 communication message, by described STM8 CPU, RS485 signal is converted to the square-wave signal of Transistor-Transistor Logic level, then the square-wave signal of described Transistor-Transistor Logic level is transferred to described infrared modulation chip, by described infrared modulation chip, the square-wave signal of described Transistor-Transistor Logic level is converted to the infrared modulation signal of 38KHz, finally by described infrared modulation chip, the infrared modulation signal of the 38KHz after modulation is launched, received the infrared modulation signal of described 38KHz by the infrared communication interface of electric energy meter, complete data transmit operation.Wherein, the signal conversion equipment that Fig. 3 shows power remote meter reading system of the present invention converts RS485 signal to the signal conversion process of infrared signal.
After electric energy meter receives image data, by the infrared communications ports of himself, the electric energy meter data of infrared signal form are sent to the infrared demodulation chip of described signal conversion equipment, described infrared demodulation chip is demodulated into the infrared signal receiving the square-wave signal of Transistor-Transistor Logic level, then reach described STM8 CPU, and by described STM8 CPU, the square-wave signal of described Transistor-Transistor Logic level is converted to RS485 signal, finally by described RS485 transceiving chip, described RS485 signal is reached to described acquiring electric energy information equipment, thereby realize the local copy reading of electric energy meter data.Wherein, the signal conversion equipment that Fig. 4 shows power remote meter reading system of the present invention converts infrared signal to the signal conversion process of RS485 signal.
The content of embodiment is understood for the ease of those skilled in the art and is used the present invention and describing, and does not form the restriction of the present invention being protected to content.Those skilled in the art, after having read content of the present invention, can carry out suitable amendment to the present invention.Protection content of the present invention is as the criterion with the content of claim.In the case of the flesh and blood and protection domain that do not depart from claim, various amendments, change and replacement etc. that the present invention is carried out are all within protection scope of the present invention.
Claims (2)
1. the signal conversion equipment of a power remote meter reading system, it comprises a RS485 transceiving chip (1), a STM8 CPU (2), an infrared modulation chip (3), an infrared demodulation chip (4), an infrared pilot lamp (5) and a RS485 communication pilot lamp (6), described RS485 transceiving chip (1) is open one group of transmitting-receiving port outwards, call acquiring electric energy information equipment this locality for described power remote meter reading system, described infrared modulation chip (3) and infrared demodulation chip (4) be outwards open one group of port respectively, for carrying out the mutual of infrared signal with electric energy meter, the infrared signal that the RS485 signal that described STM8 CPU (2) receives for the treatment of described RS485 transceiving chip (1) and described infrared demodulation chip (4) receive is also carried out signal transmission, thereby realize the data-switching under unlike signal, whether described infrared pilot lamp (5) is used to indicate described infrared demodulation chip (4) in running order, whether described RS485 communication pilot lamp (6) is used to indicate described RS485 transceiving chip (1) in running order.
2. the signal conversion equipment of power remote meter reading system as claimed in claim 1, wherein, described RS485 transceiving chip (1) is SN65HVD3082E, described STM8 CPU (2) is STM8S003F3, and described infrared modulation chip (3) and infrared demodulation chip (4) are respectively IRM3638 and IR11-21C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410365988.1A CN104123831A (en) | 2014-07-30 | 2014-07-30 | Signal conversion equipment of remote power meter reading system |
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| CN201410365988.1A CN104123831A (en) | 2014-07-30 | 2014-07-30 | Signal conversion equipment of remote power meter reading system |
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| CN104123831A true CN104123831A (en) | 2014-10-29 |
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| CN201410365988.1A Pending CN104123831A (en) | 2014-07-30 | 2014-07-30 | Signal conversion equipment of remote power meter reading system |
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| CN107784822A (en) * | 2017-12-12 | 2018-03-09 | 南京威尔泰电气工程有限公司 | A kind of infrared ammeter data collecting device, method and system |
| CN113643003A (en) * | 2021-08-30 | 2021-11-12 | 南方电网数字电网研究院有限公司 | Remote meter reading system for power grid user power consumption |
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