CN102215049B - Data sending method and data sending device - Google Patents
Data sending method and data sending device Download PDFInfo
- Publication number
- CN102215049B CN102215049B CN201110141191.XA CN201110141191A CN102215049B CN 102215049 B CN102215049 B CN 102215049B CN 201110141191 A CN201110141191 A CN 201110141191A CN 102215049 B CN102215049 B CN 102215049B
- Authority
- CN
- China
- Prior art keywords
- current
- current threshold
- time period
- power
- threshold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention discloses a data sending method and a data sending device, which are used for solving the problem of low data sending accuracy in the prior art. The method comprises the following steps that: if a power frequency current is determined to be in an increased state, a sending end selects a sub-time period, from a time period in which the power frequency current is increased from a first current threshold value to a second current threshold value, and sends the data; or if the power frequency current is not determined to be in the increased state, the sending end selects the sub-time period, from the time period in which the power frequency current is decreased from the second current threshold value to the first current threshold value, and sends the data, wherein absolute values of the first current threshold value and the second current threshold value are smaller than a peak value of the power frequency current, and the absolute value of a difference value between the absolute values of the first current threshold value and the second current threshold value and the peak value of the power frequency current is greater than a determined threshold value. In the embodiment of the invention, because the absolute values of the first current threshold value and the second current threshold value are smaller than the peak value of the power frequency current, interference generated by other electric appliances when the power frequency current is at a peak or a valley can be avoided by sending the data in the selected sub-time period, so that the data sending accuracy is improved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method and device that sends data.
Background technology
A focus is to utilize civilian low voltage power line carrier technology in current communication industry, by the Deta bearer of civil watt-hour meter on carrier wave, and by power line and the Internet automatic transmission to power office, realize automatic data logging.Because the frequency response of power line has stronger inhibition for the carrier wave in particular frequency range, also for the carrier wave in particular frequency range, there is stronger decline, therefore prior art adopts the power line OFDM carrier system that orthogonal frequency division multiplexi (OFDM, Orthogonal Frequency Division Multiplexing) combines with civilian low voltage power line carrier technology to send data.
In the prior art, utilize the frequency-selecting function of OFDM technology, transmitting terminal is selected the carrier wave of setpoint frequency, and Deta bearer is sent to receiving terminal on this carrier wave of selecting, wherein, this setpoint frequency is that power line has certain frequency outside the particular frequency range of stronger decline correspondence.Therefore the method that prior art sends data can hide because of decline form to the disadvantageous frequency range of transfer of data, improve the accuracy that sends data.
But power line various civilian and office appliance around also can cause to the carrier wave in power line very large interference, the 50Hz power current of especially carrying in power line is near peak value and valley time, the interference meeting that electrical equipment causes being exaggerated at double.Fig. 1 is the schematic diagram of the 50Hz power current carried in power line in prior art, as shown in Figure 1, the interference that other electrical equipment cause T1 corresponding to the peak value of power current and T3 constantly near, and corresponding T2 and the T4 of the valley of power current can be exaggerated constantly at double.And by the method for selecting the carrier wave of setpoint frequency to send data, can only reduce decline in prior art, but can not effectively reduce the broad-band interference in the special time period that other electrical equipment cause, so prior art still can accurately not send data.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of method and device that sends data, and the mode that sends data in order to solve in prior art can not reduce the interference that other electrical equipment cause, and sends the low problem of accuracy of data.
A kind of method that sends data that the embodiment of the present invention provides, comprising:
Transmitting terminal, according to the power current of carrying in power line, judges that whether described power current is in enlarging state;
If the determination result is YES, the first current threshold and the second current threshold according to setting, increase in the time period of described the second current threshold from described the first current threshold at described power current, and the chooser time period sends data;
If the determination result is NO, at described power current, from described the second current threshold, be reduced in the time period of described the first current threshold, the chooser time period sends data;
Wherein, described the first current threshold is less than described the second current threshold, the absolute value of described the first current threshold and described the second current threshold is less than the peak value of described power current, and the absolute value of the difference of described the first current threshold and the absolute value of described the second current threshold and the peak value of described power current is greater than setting threshold;
Wherein, described transmitting terminal is when sending data, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when described transmitting terminal sends data by the carrier wave by OFDM symbol and setpoint frequency, the clock frequency adopting is set as the positive integer times of the frequency of described power current, by frequency synthesis technique, obtains described clock frequency.
The embodiment of the present invention provides a kind of method that sends data, comprising:
Transmitting terminal, according to the power current of carrying in power line, is selected the power current in one-period;
In power current in the one-period of selecting, determine the first power current in enlarging state, and in reducing the second power current of state;
According to the first current threshold and the second current threshold set, determine that described the first power current reaches the first moment T11 of described the first current threshold, described the first power current reaches the second moment T12 of described the second current threshold, and described the second power current reaches the 3rd moment T22 of described the second current threshold, described the second power current reaches the 4th moment T21 of described the first current threshold, wherein, described the first current threshold is less than described the second current threshold, the absolute value of described the first current threshold and described the second current threshold is less than the peak value of described power current, the absolute value of the difference of described the first current threshold and the absolute value of described the second current threshold and the peak value of described power current is greater than setting threshold, and
At each T11+n * T, within the time period of T12+n * T, and each T22+n * T sends data within time period of T21+n * T, and wherein, in the cycle that T is described power current, n is not less than 0 integer;
Wherein, described transmitting terminal is when sending data, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when described transmitting terminal sends data by the carrier wave by OFDM symbol and setpoint frequency, the clock frequency adopting is set as the positive integer times of the frequency of described power current, by frequency synthesis technique, obtains described clock frequency.
A kind of device that sends data that the embodiment of the present invention provides, comprising:
Judge module, for the power current of carrying according to power line, judges that whether described power current is in enlarging state;
First selects sending module, be used for if the determination result is YES, according to the first current threshold and the second current threshold set, at described power current, from described the first current threshold, increase in the time period of described the second current threshold, the chooser time period sends data, when sending data, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when the carrier wave by OFDM symbol and setpoint frequency is sent to data, the clock frequency adopting is set as the positive integer times of the frequency of described power current, by frequency synthesis technique, obtain described clock frequency,
Second selects sending module, for if the determination result is NO, at described power current, from described the second current threshold, be reduced in the time period of described the first current threshold, the chooser time period sends data, when sending data, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when the carrier wave by OFDM symbol and setpoint frequency is sent to data, the clock frequency adopting is set as the positive integer times of the frequency of described power current, by frequency synthesis technique, obtains described clock frequency;
Wherein, described the first current threshold is less than described the second current threshold, the absolute value of described the first current threshold and described the second current threshold is less than the peak value of described power current, and the absolute value of the difference of described the first current threshold and the absolute value of described the second current threshold and the peak value of described power current is greater than setting threshold.
A kind of device that sends data that the embodiment of the present invention provides, comprising:
Select module, for the power current of carrying according to power line, select the power current in one-period;
The first determination module, for the power current in the one-period selecting, determines the first power current in enlarging state, and in reducing the second power current of state;
The second determination module, be used for according to the first current threshold and the second current threshold set, determine that described the first power current reaches the first moment T11 of described the first current threshold, described the first power current reaches the second moment T22 of described the second current threshold, and described the second power current reaches the 3rd moment T22 of described the second current threshold, described the second power current reaches the 4th moment T21 of described the first current threshold, wherein, described the first current threshold is less than described the second current threshold, the absolute value of described the first current threshold and described the second current threshold is less than the peak value of described power current, the absolute value of the difference of described the first current threshold and the absolute value of described the second current threshold and the peak value of described power current is greater than setting threshold,
Sending module, at each T11+n * T within the time period of T12+n * T, and each T22+n * T sends data within time period of T21+n * T, wherein, in the cycle that T is described power current, n is not less than 0 integer; When sending data, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when the carrier wave by OFDM symbol and setpoint frequency is sent to data, the clock frequency adopting is set as the positive integer times of the frequency of described power current, by frequency synthesis technique, obtains described clock frequency.
The embodiment of the present invention provides a kind of method and device that sends data, the method transmitting terminal is according to the first current threshold and the second current threshold set, when power current is during in enlarging state, at power current, from the first current threshold, increase in the time period of the second current threshold, the chooser time period sends data, when power current is when reducing state, at power current, from the second current threshold, be reduced in the time period of the first current threshold, the chooser time period sends data, wherein, the absolute value of the first current threshold and the second current threshold is less than the peak value of this power current, and the absolute value of the difference of the absolute value of the first current threshold and the second current threshold and the peak value of power current is greater than setting threshold.Because the absolute value of the first current threshold in the embodiment of the present invention and the second current threshold is less than the peak value of this power current, and the absolute value of the difference of the absolute value of the first current threshold and the second current threshold and the peak value of power current is greater than setting threshold, therefore at power current, from the first current threshold, increase in the time period of the second current threshold, or from the second current threshold, be reduced in the time period of the first current threshold at power current, the chooser time period sends data, can avoid the severe jamming that other electrical equipment produce during in peak value and valley at power current, improved the accuracy that sends data.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the 50Hz power current carried in power line in prior art;
The process of the transmission data that Fig. 2 A provides for the embodiment of the present invention;
The 50Hz power current schematic diagram that Fig. 2 B provides for the embodiment of the present invention;
The detailed process of the transmission data that Fig. 3 provides for the embodiment of the present invention;
The process of the transmission data that Fig. 4 provides for the embodiment of the present invention;
The apparatus structure schematic diagram of the transmission data that Fig. 5 provides for the embodiment of the present invention;
The apparatus structure schematic diagram of the transmission data that Fig. 6 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of method and device that sends data, the method transmitting terminal is according to the first current threshold and the second current threshold set, when power current is during in enlarging state, at power current, from the first current threshold, increase in the time period of the second current threshold, the chooser time period sends data, when power current is when reducing state, at power current, from the second current threshold, be reduced in the time period of the first current threshold, the chooser time period sends data, wherein, the absolute value of the first current threshold and the second current threshold is less than the peak value of this power current, and the absolute value of the difference of the absolute value of the first current threshold and the second current threshold and the peak value of power current is greater than setting threshold.Because the absolute value of the first current threshold in the embodiment of the present invention and the second current threshold is less than the peak value of this power current, and the absolute value of the difference of the absolute value of the first current threshold and the second current threshold and the peak value of power current is greater than setting threshold, therefore at power current, from the first current threshold, increase in the time period of the second current threshold, or from the second current threshold, be reduced in the time period of the first current threshold at power current, the chooser time period sends data, can avoid the severe jamming that other electrical equipment produce during in peak value and valley at power current, improved the accuracy that sends data.Below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
The process of the transmission data that Fig. 2 A provides for the embodiment of the present invention, specifically comprises the following steps:
S201: transmitting terminal, according to the power current of carrying in power line, judges that whether power current is in enlarging state, if the determination result is YES, carries out step S202, otherwise carries out step S203.
The 50Hz power current schematic diagram that Fig. 2 B provides for the embodiment of the present invention, as shown in Figure 2 B, the waveform of power current is sine curve, and the absolute value of its peak I max equates with the absolute value of valley Imin, and the power current of one-period can be divided into t1 and two time periods of t2, within the time period of t1, this power current is in enlarging state, and within the time period of t2, this power current is in reducing state, wherein, t1 and t2 respectively account for half period.In step S201, judge that whether power current is in enlarging state, also judge that current power current is whether in the time period in t1 as shown in Figure 2 B.
The method of judgement has a variety of, for example can within the extremely short time, successively measure the current value of power current for twice, the magnitude relationship of the current value of successively twice measurement of judgement, if the rear current value of measuring is greater than the current value of first measuring, determine that power current is in enlarging state, otherwise determine that power current is in reducing state.
S202: the first current threshold and the second current threshold according to setting, at power current, from the first current threshold, increase in the time period of the second current threshold, the chooser time period sends data.
S203: be reduced to from the second current threshold at power current in the time period of the first current threshold, the chooser time period sends data.
Wherein, the first current threshold is less than the second current threshold, the absolute value of the first current threshold and the second current threshold is less than the peak value of power current, and the absolute value of the difference of the first current threshold and the absolute value of the second current threshold and the peak value of power current is greater than setting threshold.
In embodiments of the present invention, the severe jamming producing during in peak value and valley at power current in order to reduce other electrical equipment, when transmitting terminal is determined power current in enlarging state, at power current, from the first current threshold, increase in the time period of the second current threshold, the chooser time period sends data.As shown in Figure 2 B, when transmitting terminal determines that power current is in the time period in t1, at power current, from the first current threshold I1, increase in the time period t 11 that the second current threshold I2 is corresponding, the chooser time period sends data.Accordingly, when transmitting terminal determines that power current is in the time period in t2, at power current, from the second current threshold I2, be reduced in the time period t 21 that the first current threshold I1 is corresponding, the chooser time period sends data.Adopt the method transmitting terminal can in time domain, hide near the time period of power current peak value and valley, only at power current, near time period peak value and valley, do not send data, therefore can avoid near the severe jamming that other electrical equipment produce when power current is peak value and valley, improve the accuracy that sends data.
Wherein, the first current threshold I1 is less than the second current threshold I2, the absolute value of the first current threshold I1 and the second current threshold I2 is less than the peak I max of power current, is also the peak I max that I1 and I2 are all less than power current, and is all greater than the valley Imin of power current.And, the absolute value of the difference of the first current threshold I1 and the second absolute value of current threshold I2 and the peak I max of power current is greater than setting threshold, because the absolute value of the peak I max of power current equates with the absolute value of valley Imin, therefore the absolute value of the difference of the absolute value of I1 and the absolute value of I2 and the valley Imin of power current is also greater than setting threshold, | Imax-|I1|| > m, | Imax-|I2|| > m, || Imin|-|I1|| > m, || Imin|-|I2|| > m, wherein, m is setting threshold.
In addition, this setting threshold can be set as required, and in order further to improve the accuracy that transmitting terminal sends data, it is larger that this setting threshold can be set, and sends the efficiency of data in order to improve transmitting terminal, and it is less that this setting threshold can be set.
In embodiments of the present invention, transmitting terminal increases in the time period of the second current threshold at power current from the first current threshold, the process that the chooser time period sends data is specially: if current time power current is less than the first current threshold, by power current from reaching the first current threshold, to the time increasing to till the second current threshold, as the sub-time period of selecting, within the sub-time period of selecting, send data; If current time power current is not less than the first current threshold, and be not more than the second current threshold, current time to power current is increased to time period of moment correspondence of the second current threshold as the sub-time period of selecting, within the sub-time period of selecting, send data.In addition, if current time power current is greater than the second current threshold, in increasing to time period of moment correspondence of peak value, current time to power current do not send data.
Accordingly, transmitting terminal is reduced in the time period of the first current threshold at power current from the second current threshold, the process that the chooser time period sends data is specially: if current time power current is greater than the second current threshold, by power current from reaching the second current threshold, to the time period being reduced to till the first current threshold, as the sub-time period of selecting, within the sub-time period of selecting, send data; If current time power current is not more than the second current threshold, and be not less than the first current threshold, current time to power current is reduced to time period of moment correspondence of the first current threshold as the sub-time period of selecting, within the sub-time period of selecting, sends data.In addition, if current time power current is less than the first current threshold, in being reduced to time period of moment correspondence of valley, current time to power current do not send data.
In embodiments of the present invention, in order further to improve the accuracy that transmitting terminal sends data, transmitting terminal is when sending data, Deta bearer is sent on the carrier wave of setpoint frequency, also be, the weak setpoint frequency of decline of selecting power line sends Deta bearer on the setpoint frequency of this selection.Therefore, transmitting terminal can reduce the decline of power line to data in the interference that other electrical equipment of reduction cause, and has further improved the accuracy that sends data.
The detailed process of the transmission data that Fig. 3 provides for the embodiment of the present invention, specifically comprises the following steps:
S301: transmitting terminal, according to the power current of carrying in power line, judges that whether power current is in enlarging state, if the determination result is YES, carries out step S302, otherwise carries out step S303.
S302: the first current threshold and the second current threshold according to setting, at power current, from the first current threshold, increase in the time period of the second current threshold, select to send the sub-time period of data.
S303: be reduced to from the second current threshold at power current in the time period of the first current threshold, select to send the sub-time period of data.
S304: Deta bearer, on the carrier wave of setpoint frequency, and is sent within the sub-time period of selecting.
In said process, when transmitting terminal is determined power current in enlarging state, at power current, from the first current threshold, increase in the time period of the second current threshold, the chooser time period sends data, when transmitting terminal determines that power current is when reducing state, at power current, from the second current threshold, be reduced in the time period of the first current threshold, the chooser time period sends data.Adopt the method transmitting terminal can in time domain, hide near the time period of power current peak value and valley, only at power current, near time period peak value and valley, do not send data, therefore can avoid near the severe jamming that other electrical equipment produce when power current is peak value and valley, improve the accuracy that sends data.
Because the frequency of the power current of carrying in power line is more stable, so all right one-period for power current of transmitting terminal, determine that power current is when enlarging state, power current reaches the first moment T11 of the first current threshold, and power current reaches the second moment T12 of the second current threshold, and definite power current is when reducing state, power current reaches the 3rd moment T22 of the second current threshold, and power current reaches the 4th moment T21 of the first current threshold.While adopting said method, transmitting terminal can be in the one-period of power current, in T11 arrives the time period of T12, and T22 is to the interior data that send of time period of T21, in the process of follow-up transmission data, needs only at T11+k * T within the time period of T12+k * T, and T22+k * T sends within the time period of T21+k * T, wherein, k is positive integer, the cycle that T is this power current.As shown in Figure 4, the process of the transmission data that Fig. 4 provides for the embodiment of the present invention, specifically comprises the following steps:
S401: transmitting terminal, according to the power current of carrying in power line, is selected the power current in one-period.
S402: in the power current in the one-period of selecting, determine the first power current in enlarging state, and in reducing the second power current of state.
Wherein, the first power current in enlarging state is the power current of time period t 1 correspondence as shown in Figure 2 B, is the power current of time period t 2 correspondences as shown in Figure 2 B in reducing the second power current of state.
S403: according to the first current threshold and the second current threshold set, determine described the first power current reach described the first current threshold first constantly T11, described the first power current reach the second T12 constantly of described the second current threshold, and described the second power current reach described the second current threshold the 3rd T22, described the second power current reach the 4th T21 constantly of described the first current threshold constantly.
Wherein, the establishing method of the first current threshold and the second current threshold, identical with the establishing method of the first current threshold in the process of the transmission data shown in Fig. 2 A and the second current threshold, just repeat no longer one by one here.
S404: within the time period of T12+n * T, and each T22+n * T sends data within time period of T21+n * T at each T11+n * T, and wherein, in the cycle that T is described power current, n is not less than 0 integer.
For example, when the frequency of power current is 50Hz, the cycle T of this power current is 20ms, transmitting terminal at each T11+n * 20ms within the time period of T12+n * 20ms, and each T22+n * 20ms sends data within the time period of T21+n * 20ms, also be transmitting terminal at T11+0 * 20ms within the time period of T12+0 * 20ms, and T22+0 * 20ms sends data within the time period of T21+0 * 20ms, at T11+1 * 20ms within the time period of T12+1 * 20ms, and T22+1 * 20ms sends data within the time period of T21+1 * 20ms, at T11+2 * 20ms within the time period of T12+2 * 20ms, and T22+2 * 20ms sends data within the time period of T21+2 * 20ms, by that analogy.
And, in said process, for convenient definite the first moment T11, the second moment T12, and the 3rd T21 constantly, the 4th moment T22, the process of the power current in the selection one-period in step S301 is specially, determine one-period corresponding between two peak values that this power current is adjacent, the power current of power current within this cycle of determining in the one-period of selecting, or, determine one-period corresponding between two valleies that this power current is adjacent, the power current of power current within this cycle of determining in the one-period of selecting.
In addition, although the frequency of power current is more stable, As time goes on the minor variations of the frequency of power current, still can cause larger phase error after certain hour.Continue to describe along using example, when transmitting terminal sends data, if according to above-mentioned at each T11+n * 20ms within the time period of T12+n * 20ms, and each T22+n * 20ms sends data within the time period of T21+n * 20ms, the power current of certain after certain hour is in the cycle, the time period that sends data may be departed from and original from I1, increased to I2 when electric current, or electric current is reduced to the time period of I1 from I2, will make like this accuracy that sends data reduce.Therefore, in embodiments of the present invention, in order to improve the accuracy that sends data, in above-mentioned steps S401, transmitting terminal can, according to the time interval of setting, be selected the power current in one-period.Also be, transmitting terminal is every the time interval of this setting, just select the power current in one-period, and redefine one time first constantly T11, second T12 constantly, and the 3rd T22, the 4th T21 constantly constantly, according to above-mentioned four moment that redefine, at each T11+n * T, within the time period of T12+n * T, and each T22+n * T sends data within time period of T21+n * T.
And, in order further to improve the accuracy that transmitting terminal sends data, in above-mentioned steps S404, transmitting terminal is when sending data, Deta bearer is sent on the carrier wave of setpoint frequency, also, select the weak setpoint frequency of decline of power line, Deta bearer is sent on the setpoint frequency of this selection.Therefore, transmitting terminal can reduce the decline of power line to data in the interference that other electrical equipment of reduction cause, and has further improved the accuracy that sends data.
In above-mentioned steps S404, transmitting terminal can utilize OFDM technology to send data, also can send data by the carrier wave of OFDM symbol and setpoint frequency.But, while utilizing OFDM technology to send data, must send data according to certain clock frequency.Because this clock frequency is to obtain according to the crystal oscillator frequency in ofdm system, and the frequency of power current not obtains according to the crystal oscillator in this ofdm system, the clock frequency adopting while therefore utilizing OFDM technology to send data and the frequency of power current are nonsynchronous.In addition, the clock frequency that the crystal oscillator from ofdm system obtains, also can produce small variation due to the quality of this crystal oscillator itself, and this small variation meeting causes larger phase error after certain hour.Meanwhile, also there is unsteadiness in the frequency of power current, and As time goes on, the unsteadiness of the frequency of this power current also can cause larger phase error after certain hour.These three factors all can cause when transmitting terminal utilizes OFDM technology to send data, certain power current after certain hour is in the cycle, the time period of transmission data can be departed from the original electric current of working as and be increased to I2 from I1, or electric current is reduced to the time period of I1 from I2, will make like this accuracy that sends data reduce.
Therefore, in embodiments of the present invention, in order further to improve the accuracy that sends data, when transmitting terminal sends data by the carrier wave by OFDM symbol and setpoint frequency, the clock frequency adopting be set as this power current frequency positive integer doubly.Also, transmitting terminal, when utilizing OFDM technology to send data, is set as the clock frequency in ofdm system the positive integer times of the frequency of this power current, specifically can obtain this clock frequency by frequency synthesis technique.
The apparatus structure schematic diagram of the transmission data that Fig. 5 provides for the embodiment of the present invention, specifically comprises:
Judge module 501, for the power current of carrying according to power line, judges that whether described power current is in enlarging state;
First selects sending module 502, be used for if the determination result is YES, the first current threshold and the second current threshold according to setting, increase in the time period of described the second current threshold from described the first current threshold at described power current, and the chooser time period sends data;
Second selects sending module 503, if for the determination result is NO, at described power current, from described the second current threshold, is reduced in the time period of described the first current threshold, and the chooser time period sends data;
Wherein, described the first current threshold is less than described the second current threshold, the absolute value of described the first current threshold and described the second current threshold is less than the peak value of described power current, and the absolute value of the difference of described the first current threshold and the absolute value of described the second current threshold and the peak value of described power current is greater than setting threshold.
Described first select sending module 502 specifically for, if power current is less than described the first current threshold described in current time, by described power current from reaching described the first current threshold, to the time period that increases to described the second current threshold position, as the sub-time period of selecting, within the sub-time period of selecting, send data, if power current is not less than described the first current threshold described in current time, and be not more than described the second current threshold, current time to described power current is increased to time period of moment correspondence of described the second current threshold as the sub-time period of selecting, within the sub-time period of selecting, send data.
Described second select sending module 503 specifically for, if power current is greater than described the second current threshold described in current time, by described power current from reaching described the second current threshold, to the time period being reduced to till described the first current threshold, as the sub-time period of selecting, within the sub-time period of selecting, send data, if power current is not more than described the second current threshold described in current time, and be not less than described the first current threshold, current time to described power current is reduced to time period of moment correspondence of described the first current threshold as the sub-time period of selecting, within the sub-time period of selecting, send data.
Described first select sending module 502 specifically for, Deta bearer is sent on the carrier wave of setpoint frequency;
Described second select sending module 503 specifically for, Deta bearer is sent on the carrier wave of setpoint frequency.
The device of concrete above-mentioned transmission data can be arranged in transmitting terminal.
The apparatus structure schematic diagram of the transmission data that Fig. 6 provides for the embodiment of the present invention, specifically comprises:
The first determination module 602, for the power current in the one-period selecting, determines the first power current in enlarging state, and in reducing the second power current of state;
The second determination module 603, be used for according to the first current threshold and the second current threshold set, determine that described the first power current reaches the first moment T11 of described the first current threshold, described the first power current reaches the second moment T22 of described the second current threshold, and described the second power current reaches the 3rd moment T22 of described the second current threshold, described the second power current reaches the 4th moment T21 of described the first current threshold, wherein, described the first current threshold is less than described the second current threshold, the absolute value of described the first current threshold and described the second current threshold is less than the peak value of described power current, the absolute value of the difference of described the first current threshold and the absolute value of described the second current threshold and the peak value of described power current is greater than setting threshold,
Sending module 604, at each T11+n * T within the time period of T12+n * T, and each T22+n * T sends data within time period of T21+n * T, wherein, in the cycle that T is described power current, n is not less than 0 integer.
Described selection module 601 specifically for, determine one-period corresponding between two peak values that described power current is adjacent, the power current of power current within the described cycle of determining in the one-period of selecting, or, determine one-period corresponding between two valleies that described power current is adjacent, the power current of the power current within the described cycle of determining in the one-period of selecting.
Described selection module 601 specifically for, according to the time interval of setting, select the power current in one-period.
Described sending module 604 specifically for, Deta bearer is sent on the carrier wave of setpoint frequency.
Described sending module 604 specifically for, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when the carrier wave by OFDM symbol and setpoint frequency is sent to data, the clock frequency adopting is set as the positive integer times of the frequency of described power current.
The device of concrete above-mentioned transmission data can be arranged in transmitting terminal.
The embodiment of the present invention provides a kind of method and device that sends data, the method transmitting terminal is according to the first current threshold and the second current threshold set, when power current is during in enlarging state, at power current, from the first current threshold, increase in the time period of the second current threshold, the chooser time period sends data, when power current is when reducing state, at power current, from the second current threshold, be reduced in the time period of the first current threshold, the chooser time period sends data, wherein, the absolute value of the first current threshold and the second current threshold is less than the peak value of this power current, and the absolute value of the difference of the absolute value of the first current threshold and the second current threshold and the peak value of power current is greater than setting threshold.Because the absolute value of the first current threshold in the embodiment of the present invention and the second current threshold is less than the peak value of this power current, and the absolute value of the difference of the absolute value of the first current threshold and the second current threshold and the peak value of power current is greater than setting threshold, therefore at power current, from the first current threshold, increase in the time period of the second current threshold, or from the second current threshold, be reduced in the time period of the first current threshold at power current, the chooser time period sends data, can avoid the severe jamming that other electrical equipment produce during in peak value and valley at power current, improved the accuracy that sends data.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (12)
1. a method that sends data, is characterized in that, comprising:
Transmitting terminal, according to the power current of carrying in power line, judges that whether described power current is in enlarging state;
If the determination result is YES, the first current threshold and the second current threshold according to setting, increase in the time period of described the second current threshold from described the first current threshold at described power current, and the chooser time period sends data;
If the determination result is NO, at described power current, from described the second current threshold, be reduced in the time period of described the first current threshold, the chooser time period sends data;
Wherein, described the first current threshold is less than described the second current threshold, the absolute value of described the first current threshold and described the second current threshold is less than the peak value of described power current, and the absolute value of the difference of described the first current threshold and the absolute value of described the second current threshold and the peak value of described power current is greater than setting threshold;
Wherein, described transmitting terminal is when sending data, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when described transmitting terminal sends data by the carrier wave by OFDM symbol and setpoint frequency, the clock frequency adopting is set as the positive integer times of the frequency of described power current, by frequency synthesis technique, obtains described clock frequency.
2. the method for claim 1, is characterized in that, at described power current, from described the first current threshold, increases in the time period of described the second current threshold, and the chooser time period sends data and comprises:
If power current is less than described the first current threshold described in current time, by described power current from reaching described the first current threshold, to the time period increasing to till described the second current threshold, as the sub-time period of selecting, within the sub-time period of selecting, send data;
If power current is not less than described the first current threshold described in current time, and be not more than described the second current threshold, current time to described power current is increased to time period of moment correspondence of described the second current threshold as the sub-time period of selecting, within the sub-time period of selecting, send data.
3. the method for claim 1, is characterized in that, at described power current, from described the second current threshold, is reduced in the time period of described the first current threshold, and the chooser time period sends data and comprises:
If power current is greater than described the second current threshold described in current time, by described power current from reaching described the second current threshold, to the time period being reduced to till described the first current threshold, as the sub-time period of selecting, within the sub-time period of selecting, send data;
If power current is not more than described the second current threshold described in current time, and be not less than described the first current threshold, current time to described power current is reduced to time period of moment correspondence of described the first current threshold as the sub-time period of selecting, within the sub-time period of selecting, sends data.
4. a method that sends data, is characterized in that, comprising:
Transmitting terminal, according to the power current of carrying in power line, is selected the power current in one-period;
In power current in the one-period of selecting, determine the first power current in enlarging state, and in reducing the second power current of state;
According to the first current threshold and the second current threshold set, determine that described the first power current reaches the first moment T11 of described the first current threshold, described the first power current reaches the second moment T12 of described the second current threshold, and described the second power current reaches the 3rd moment T22 of described the second current threshold, described the second power current reaches the 4th moment T21 of described the first current threshold, wherein, described the first current threshold is less than described the second current threshold, the absolute value of described the first current threshold and described the second current threshold is less than the peak value of described power current, the absolute value of the difference of described the first current threshold and the absolute value of described the second current threshold and the peak value of described power current is greater than setting threshold, and
At each T11+n * T, within the time period of T12+n * T, and each T22+n * T sends data within time period of T21+n * T, and wherein, in the cycle that T is described power current, n is not less than 0 integer;
Wherein, described transmitting terminal is when sending data, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when described transmitting terminal sends data by the carrier wave by OFDM symbol and setpoint frequency, the clock frequency adopting is set as the positive integer times of the frequency of described power current, by frequency synthesis technique, obtains described clock frequency.
5. method as claimed in claim 4, is characterized in that, selects the power current in one-period to comprise:
Determine one-period corresponding between two peak values that described power current is adjacent, the power current of the power current within the described cycle of determining in the one-period of selecting; Or,
Determine one-period corresponding between two valleies that described power current is adjacent, the power current of the power current within the described cycle of determining in the one-period of selecting.
6. method as claimed in claim 4, is characterized in that, selects the power current in one-period to comprise:
Described transmitting terminal, according to the time interval of setting, is selected the power current in one-period.
7. a device that sends data, is characterized in that, comprising:
Judge module, for the power current of carrying according to power line, judges that whether described power current is in enlarging state;
First selects sending module, be used for if the determination result is YES, according to the first current threshold and the second current threshold set, at described power current, from described the first current threshold, increase in the time period of described the second current threshold, the chooser time period sends data, when sending data, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when the carrier wave by OFDM symbol and setpoint frequency is sent to data, the clock frequency adopting is set as the positive integer times of the frequency of described power current, by frequency synthesis technique, obtain described clock frequency,
Second selects sending module, for if the determination result is NO, at described power current, from described the second current threshold, be reduced in the time period of described the first current threshold, the chooser time period sends data, when sending data, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when the carrier wave by OFDM symbol and setpoint frequency is sent to data, the clock frequency adopting is set as the positive integer times of the frequency of described power current, by frequency synthesis technique, obtains described clock frequency;
Wherein, described the first current threshold is less than described the second current threshold, the absolute value of described the first current threshold and described the second current threshold is less than the peak value of described power current, and the absolute value of the difference of described the first current threshold and the absolute value of described the second current threshold and the peak value of described power current is greater than setting threshold.
8. device as claimed in claim 7, it is characterized in that, described first select sending module specifically for, if power current is less than described the first current threshold described in current time, by described power current from reaching described the first current threshold, to the time period that increases to described the second current threshold position, as the sub-time period of selecting, within the sub-time period of selecting, send data, if power current is not less than described the first current threshold described in current time, and be not more than described the second current threshold, current time to described power current is increased to time period of moment correspondence of described the second current threshold as the sub-time period of selecting, within the sub-time period of selecting, send data.
9. device as claimed in claim 7, it is characterized in that, described second select sending module specifically for, if power current is greater than described the second current threshold described in current time, by described power current from reaching described the second current threshold, to the time period being reduced to till described the first current threshold, as the sub-time period of selecting, within the sub-time period of selecting, send data, if power current is not more than described the second current threshold described in current time, and be not less than described the first current threshold, current time to described power current is reduced to time period of moment correspondence of described the first current threshold as the sub-time period of selecting, within the sub-time period of selecting, send data.
10. a device that sends data, is characterized in that, comprising:
Select module, for the power current of carrying according to power line, select the power current in one-period;
The first determination module, for the power current in the one-period selecting, determines the first power current in enlarging state, and in reducing the second power current of state;
The second determination module, be used for according to the first current threshold and the second current threshold set, determine that described the first power current reaches the first moment T11 of described the first current threshold, described the first power current reaches the second moment T22 of described the second current threshold, and described the second power current reaches the 3rd moment T22 of described the second current threshold, described the second power current reaches the 4th moment T21 of described the first current threshold, wherein, described the first current threshold is less than described the second current threshold, the absolute value of described the first current threshold and described the second current threshold is less than the peak value of described power current, the absolute value of the difference of described the first current threshold and the absolute value of described the second current threshold and the peak value of described power current is greater than setting threshold,
Sending module, at each T11+n * T within the time period of T12+n * T, and each T22+n * T sends data within time period of T21+n * T, wherein, in the cycle that T is described power current, n is not less than 0 integer; When sending data, carrier wave by orthogonal frequency division multiplex OFDM symbol and setpoint frequency sends data, wherein, when the carrier wave by OFDM symbol and setpoint frequency is sent to data, the clock frequency adopting is set as the positive integer times of the frequency of described power current, by frequency synthesis technique, obtains described clock frequency.
11. devices as claimed in claim 10, it is characterized in that, described selection module specifically for, determine one-period corresponding between two peak values that described power current is adjacent, the power current of power current within the described cycle of determining in the one-period of selecting, or, determine one-period corresponding between two valleies that described power current is adjacent, the power current of the power current within the described cycle of determining in the one-period of selecting.
12. devices as claimed in claim 10, is characterized in that, described selection module specifically for, according to the time interval of setting, select the power current in one-period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110141191.XA CN102215049B (en) | 2011-05-27 | 2011-05-27 | Data sending method and data sending device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110141191.XA CN102215049B (en) | 2011-05-27 | 2011-05-27 | Data sending method and data sending device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102215049A CN102215049A (en) | 2011-10-12 |
| CN102215049B true CN102215049B (en) | 2014-01-29 |
Family
ID=44746204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110141191.XA Expired - Fee Related CN102215049B (en) | 2011-05-27 | 2011-05-27 | Data sending method and data sending device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102215049B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105991499B (en) * | 2015-02-06 | 2019-09-13 | 钜泉光电科技(上海)股份有限公司 | The synchronous power line carrier, PLC of OFDM power frequency and physical level coded modulation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3693166B2 (en) * | 2001-12-14 | 2005-09-07 | 東光電気株式会社 | Distribution line transport method |
| CN101026411A (en) * | 2005-07-27 | 2007-08-29 | 因特隆公司 | Communicating in a network that includes a medium having varying transmission characteristics |
| CN101493485A (en) * | 2009-03-09 | 2009-07-29 | 浙江纪元电气集团有限公司 | On-line monitoring system for capacitive equipment dielectric loss angle |
| JP2010088079A (en) * | 2008-10-03 | 2010-04-15 | Toyo Networks & System Integration Co Ltd | Power line transfer communication apparatus |
| CN101729098A (en) * | 2008-10-28 | 2010-06-09 | 青岛鼎信通讯有限公司 | Brand new FSK spread spectrum carrier communication system based on the characteristic of power lines |
| CN102064850A (en) * | 2010-11-08 | 2011-05-18 | 厦门拓能信息科技有限公司 | Data transmission method based on low-voltage power line |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101159449A (en) * | 2007-09-14 | 2008-04-09 | 西安旌旗电子有限公司 | Communication method in low-voltage network carrier communication system |
-
2011
- 2011-05-27 CN CN201110141191.XA patent/CN102215049B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3693166B2 (en) * | 2001-12-14 | 2005-09-07 | 東光電気株式会社 | Distribution line transport method |
| CN101026411A (en) * | 2005-07-27 | 2007-08-29 | 因特隆公司 | Communicating in a network that includes a medium having varying transmission characteristics |
| JP2010088079A (en) * | 2008-10-03 | 2010-04-15 | Toyo Networks & System Integration Co Ltd | Power line transfer communication apparatus |
| CN101729098A (en) * | 2008-10-28 | 2010-06-09 | 青岛鼎信通讯有限公司 | Brand new FSK spread spectrum carrier communication system based on the characteristic of power lines |
| CN101493485A (en) * | 2009-03-09 | 2009-07-29 | 浙江纪元电气集团有限公司 | On-line monitoring system for capacitive equipment dielectric loss angle |
| CN102064850A (en) * | 2010-11-08 | 2011-05-18 | 厦门拓能信息科技有限公司 | Data transmission method based on low-voltage power line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102215049A (en) | 2011-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8326554B2 (en) | Systems, methods, and apparatus for utility meter phase identification | |
| US10547437B2 (en) | Synchronization signal transmitting device, method thereof and power electronic apparatus having the device | |
| US9482709B2 (en) | Method and device for assigning individual phase conductors in a polyphase energy distribution network | |
| JP2017513285A (en) | Clock drift compensation in time-synchronized channel hopping networks | |
| US10616028B2 (en) | Apparatus for a radio device | |
| CN104077257A (en) | FPGA (Field Programmable Gate Array) based multi-channel data transmission synchronization delay measurement method and system | |
| KR100791823B1 (en) | Apparatus and method for synchronizing signal analyzer | |
| CN105763376B (en) | Parameter setting and detection method for electric energy meter batch production | |
| CN103582109A (en) | Method and device for synchronizing time | |
| CN109417296B (en) | AMI system and method for performing phase detection and synchronization in AMI communication network | |
| EP4311122A3 (en) | Parameter configuration method and communications apparatus | |
| CN102215049B (en) | Data sending method and data sending device | |
| US11860200B2 (en) | Zero crossing point signal output and power line data transmitting method and device | |
| CN104602283A (en) | Method for solving measurement conflict through LTE (Long Term Evolution) system during pilot frequency measurement | |
| US20140198859A1 (en) | Power line communication system synchronization | |
| US20200014211A1 (en) | Power transmission system capable of preventing power transmission efficiency from degrading due to frequency mismatch and loss of synchronization | |
| CN105230088B (en) | Asynchronous TDD system phase synchronization method and device | |
| CN104780602A (en) | Clock self-synchronizing method in wireless communication network | |
| CN107045121A (en) | A kind of near field ultra-broadband signal phase difference ranging method and system | |
| KR20110083960A (en) | Apparatus for clock correction and synchronization using loran-c signals and method for clock correction and synchronization using the smae | |
| US20200400480A1 (en) | Radar level gauging with power-dependent number of measurement operations | |
| De Angelis et al. | Performance assessment of chirp-based time dissemination and data communications in inductively coupled links | |
| CN104703268A (en) | Filter power compensation method and device and user terminal | |
| CN103414494B (en) | Signal frame generation method of power-line carrier communication system | |
| CN112994742B (en) | Method for realizing frequency hopping synchronization, receiver and communication equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zheng Qingdai Inventor after: Gu Yucong Inventor after: Jiang Xuefeng Inventor after: Lu Yangjian Inventor before: Zheng Qingdai Inventor before: Gu Yucong Inventor before: Jiang Xuefeng Inventor before: Lu Yangjian |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20210527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |