CN105158724A - NRF905-based wireless meter calibration system and meter calibration method thereof - Google Patents
NRF905-based wireless meter calibration system and meter calibration method thereof Download PDFInfo
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- CN105158724A CN105158724A CN201510507461.2A CN201510507461A CN105158724A CN 105158724 A CN105158724 A CN 105158724A CN 201510507461 A CN201510507461 A CN 201510507461A CN 105158724 A CN105158724 A CN 105158724A
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Abstract
The invention discloses an nRF905-based wireless meter calibration system and a meter calibration method thereof. The nRF905-based wireless meter calibration system comprises a plurality of electric energy meters to be calibrated and a PC which is used for storing and transmitting error information of each electric energy meters to be calibrated. The nRF905-based wireless meter calibration system is characterized in that the nRF905-based wireless meter calibration system also comprises a first micro control unit, a second micro control unit first, a first nRF905 module and a second nRF905 module; the PC is electrically connected with the first micro control unit; the first micro control unit is electrically connected with the first nRF905 module; the first nRF905 module is in signal connection with the second nRF905 module; the second nRF905 module is electrically connected with the second micro control unit; and the second micro control unit is electrically connected with the plurality of electrical energy meters respectively. With the nRF905-based wireless meter calibration system and the meter calibration method thereof of the invention adopted, meter calibration efficiency can be improved.
Description
Technical field
The present invention relates to a kind of wireless meter correcting system based on nRF905 and correction method thereof.
Background technology
Often need to carry out manual adjustment to the error of electric energy meter in research and development and test, existing manual calibration procedures is as follows: by the PC host computer of control information for storing and transmit electric energy meter to be corrected, electric energy meter to be corrected is connected by wireline cable with PC host computer, after correction completes, the connection of electric energy meter and the PC host computer corrected will be cut off, new electric energy meter to be corrected is connected with PC host computer, realizes correcting.Said process shows, needs to switch serial ports in manual calibration process, and communication distance is subject to the restriction of length of cable, causes calibration efficiency low.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of wireless meter correcting system based on nRF905 that can improve calibration efficiency.
For solving the problems of the technologies described above, technical scheme provided by the invention is: a kind of wireless meter correcting system based on nRF905, and it comprises multiple electric energy meter to be corrected and the PC host computer of control information for storing and transmit each electric energy meter to be corrected; It is characterized in that: it also comprises the first micro-control unit, the second micro-control unit, a nRF905 module and the 2nd nRF905 module; Described PC host computer is electrically connected with the first micro-control unit, described first micro-control unit is electrically connected with a nRF905 module, a described nRF905 module is connected with the 2nd nRF905 module by signal, described 2nd nRF905 module is electrically connected with the second micro-control unit, and described second micro-control unit is connected with multiple electrical energy meter electricity respectively.
After adopting above structure, the present invention compared with prior art, has the following advantages: our inventive point is by arranging the first micro-control unit, the second micro-control unit, a nRF905 module and the 2nd nRF905 module, make PC host computer be electrically connected with the first micro-control unit simultaneously, first micro-control unit is electrically connected with a nRF905 module, one nRF905 module is connected with the 2nd nRF905 module by signal, 2nd nRF905 module is electrically connected with the second micro-control unit, second micro-control unit is connected with multiple electrical energy meter electricity respectively, evade the technological deficiency in background technology, namely avoiding PC host computer is directly input in corresponding electric energy meter by wireline cable by control information, start error correction, but by arranging the first micro-control unit, second micro-control unit, one nRF905 module and the 2nd nRF905 module, this a series of unit, module, realize control information wireless transmissions, and achieve the object that multiple electric energy meter is corrected simultaneously, calibration efficiency is improved from above-mentioned two aspects.
The technical problem to be solved in the present invention is, provides a kind of correction method that can improve the wireless meter correcting system based on nRF905 of calibration efficiency.
For solving the problems of the technologies described above, technical scheme provided by the invention is: a kind of correction method of the wireless meter correcting system based on nRF905,
Step one: record the control information that each electric energy meter to be corrected is corresponding, wherein control information comprises the error parameter information of the coded message of electric energy meter and the electric energy meter of this coding correspondence;
Step 2: the corresponding control information of each electric energy meter to be corrected is stored in PC host computer;
Step 3: be electrically connected with the first micro-control unit by PC host computer, is sent in the first micro-control unit by control information;
Step 4: be electrically connected with a nRF905 module by the first micro-control unit, the control information in the first micro-control unit is realized to be transferred in a nRF905 module, one nRF905 module starts ShockBurst mode of operation, nRF905 automatically produces lead code and CRC check code completes the synthesis of control information packet, control information bag is with 100kbs, GFSK, Synchronization mode sends;
Step 5: be connected with the 2nd nRF905 module by signal by a nRF905 module, by the mode of control information by wireless transmission, is transferred to the 2nd nRF905 module; When the nRF905 of the 2nd nRF905 module receives control information packet, nRF905 removes lead code and CRC position, and control information bag is ready;
Step 6: be electrically connected with the second micro-control unit by the 2nd nRF905 module, second micro-control unit carries out SPI with the highest 10MHz speed and reads to receive control information bag, successively each control information in control information bag is decoded simultaneously, obtain the coded message in each control information and error parameter information, be connected with multiple electrical energy meter electricity respectively by the second micro-control unit, corresponding electric energy meter is started according to obtaining coded message, then according to acquisition error parameter information, the calibration error meter storage started in the computation chip of this electric energy meter carries out error correction.
Preferred as one, in step 6, error parameter information in control information is divided into third gear by artificially, after obtaining error parameter information, first error in judgement parameter information is in which shelves in third gear, then starts in electric energy meter the calibration error meter storage had for correcting this gear error parameter information.
After adopting above method, the present invention compared with prior art, have the following advantages: the error parameter information being wherein designed to control information to comprise the coded message of electric energy meter and the electric energy meter of this coding correspondence, finally can correct multiple electric energy meter simultaneously made first step place mat for doing, in addition, adopt the first micro-control unit, one nRF905 module, second micro-control unit and the 2nd nRF905 module, mainly consider low-power consumption wherein, low cost, process process errors information can be completed again simultaneously, send control information, receive control information and decode error information, the electric energy meter that deactivation is corresponding again, achieve the object of automatic error correction.
Wherein, error parameter information in control information is artificially divided into third gear by us, after acquisition error parameter information, which shelves first error in judgement parameter information is in, then the calibration error meter storage had for correcting this gear error parameter information is started in electric energy meter, the main object of so enforcement has multiple calibration error meter storage in the computation chip having taken into full account electric energy meter, the amplitude of each calibration error meter storage to error correction is different, after error parameter information is divided into third gear, the calibration error meter storage that each grade of error parameter information matches one is corresponding with it, achieve and correct object more exactly.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, the present invention is described in further detail.
A kind of wireless meter correcting system based on nRF905 of the present invention, it comprises multiple electric energy meter to be corrected and the PC host computer of control information for storing and transmit each electric energy meter to be corrected; It also comprises the first micro-control unit, the second micro-control unit, a nRF905 module and the 2nd nRF905 module; Described PC host computer is electrically connected with the first micro-control unit, described first micro-control unit is electrically connected with a nRF905 module, a described nRF905 module is connected with the 2nd nRF905 module by signal, described 2nd nRF905 module is electrically connected with the second micro-control unit, and described second micro-control unit is connected with multiple electrical energy meter electricity respectively.
Based on a correction method for the wireless meter correcting system of nRF905,
Step one: record the control information that each electric energy meter to be corrected is corresponding, wherein control information comprises the error parameter information of the coded message of electric energy meter and the electric energy meter of this coding correspondence;
Step 2: the corresponding control information of each electric energy meter to be corrected is stored in PC host computer;
Step 3: be electrically connected with the first micro-control unit by PC host computer, is sent in the first micro-control unit by control information;
Step 4: be electrically connected with a nRF905 module by the first micro-control unit, the control information in the first micro-control unit is realized to be transferred in a nRF905 module, one nRF905 module starts ShockBurst mode of operation, nRF905 automatically produces lead code and CRC check code completes the synthesis of control information packet, control information bag is with 100kbs, GFSK, Synchronization mode sends;
Step 5: be connected with the 2nd nRF905 module by signal by a nRF905 module, by the mode of control information by wireless transmission, is transferred to the 2nd nRF905 module; When the nRF905 of the 2nd nRF905 module receives control information packet, nRF905 removes lead code and CRC position, and control information bag is ready;
Step 6: be electrically connected with the second micro-control unit by the 2nd nRF905 module, second micro-control unit carries out SPI with the highest 10MHz speed and reads to receive control information bag, successively each control information in control information bag is decoded simultaneously, obtain the coded message in each control information and error parameter information, be connected with multiple electrical energy meter electricity respectively by the second micro-control unit, corresponding electric energy meter is started according to obtaining coded message, then according to acquisition error parameter information, the calibration error meter storage started in the computation chip of this electric energy meter carries out error correction.
In step 6, error parameter information in control information is divided into third gear by artificially, after obtaining error parameter information, first error in judgement parameter information is in which shelves in third gear, then starts in electric energy meter the calibration error meter storage had for correcting this gear error parameter information.
Below only just most preferred embodiment of the present invention is described, but can not be interpreted as it is limitations on claims.The present invention is not limited only to above embodiment, and all various changes done in the protection domain of independent claims of the present invention are all in protection scope of the present invention.
Claims (3)
1., based on a wireless meter correcting system of nRF905, it comprises multiple electric energy meter to be corrected and the PC host computer of control information for storing and transmit each electric energy meter to be corrected; It is characterized in that: it also comprises the first micro-control unit, the second micro-control unit, a nRF905 module and the 2nd nRF905 module; Described PC host computer is electrically connected with the first micro-control unit, described first micro-control unit is electrically connected with a nRF905 module, a described nRF905 module is connected with the 2nd nRF905 module by signal, described 2nd nRF905 module is electrically connected with the second micro-control unit, and described second micro-control unit is connected with multiple electrical energy meter electricity respectively.
2. a correction method according to claim 1, is characterized in that:
Step one: record the control information that each electric energy meter to be corrected is corresponding, wherein control information comprises the error parameter information of the coded message of electric energy meter and the electric energy meter of this coding correspondence;
Step 2: the corresponding control information of each electric energy meter to be corrected is stored in PC host computer;
Step 3: be electrically connected with the first micro-control unit by PC host computer, is sent in the first micro-control unit by control information;
Step 4: be electrically connected with a nRF905 module by the first micro-control unit, the control information in the first micro-control unit is realized to be transferred in a nRF905 module, one nRF905 module starts ShockBurst mode of operation, nRF905 automatically produces lead code and CRC check code completes the synthesis of control information packet, control information bag is with 100kbs, GFSK, Synchronization mode sends;
Step 5: be connected with the 2nd nRF905 module by signal by a nRF905 module, by the mode of control information by wireless transmission, is transferred to the 2nd nRF905 module; When the nRF905 of the 2nd nRF905 module receives control information packet, nRF905 removes lead code and CRC position, and control information bag is ready;
Step 6: be electrically connected with the second micro-control unit by the 2nd nRF905 module, second micro-control unit carries out SPI with the highest 10MHz speed and reads to receive control information bag, successively each control information in control information bag is decoded simultaneously, obtain the coded message in each control information and error parameter information, be connected with multiple electrical energy meter electricity respectively by the second micro-control unit, corresponding electric energy meter is started according to obtaining coded message, then according to acquisition error parameter information, the calibration error meter storage started in the computation chip of this electric energy meter carries out error correction.
3. correction method according to claim 2, it is characterized in that: in step 6, error parameter information in control information is divided into third gear by artificially, after obtaining error parameter information, first error in judgement parameter information is in which shelves in third gear, then starts in electric energy meter the calibration error meter storage had for correcting this gear error parameter information.
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