CN112039633B - Signal sending method and device and signal receiving method and device - Google Patents
Signal sending method and device and signal receiving method and device Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
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Abstract
The invention discloses a signal sending method and device and a signal receiving method and device. The signal sending method comprises the following steps: decomposing an initial signal output by a signal source to generate at least two decomposed signals; and transmitting the at least two decomposed signals through at least two isolated transmission units, wherein the isolated transmission units correspond to the decomposed signals one to one. According to the invention, the transmission rate of the signal can be reduced in a signal decomposition mode, so that the requirement on the transmission rate of the isolation transmission unit is reduced, and the application range of the isolation transmission unit is widened.
Description
Technical Field
The invention relates to the technical field of electronic circuits, in particular to a signal sending method and device and a signal receiving method and device.
Background
When an isolated transmission unit (such as an optical coupler isolator) is adopted to transmit digital signals, the transmission rate of the isolated transmission unit becomes a decisive influence factor of the maximum transmission rate of the system. Due to the characteristic limitation of the isolated transmission unit, the upper limit of the signal communication rate is low, that is, the maximum transmission rate is low, so the application range of the isolated transmission unit is limited, for example, when the requirement on the transmission rate is high, the isolated transmission unit is not suitable for being used.
Aiming at the problem that the application range is limited due to the fact that the transmission rate of an isolation transmission unit is low in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a signal sending method and device and a signal receiving method and device, and aims to solve the problem that in the prior art, an application range is limited due to the fact that a transmission rate of an isolation transmission unit is low.
In order to solve the above technical problem, the present invention provides a signal transmission method, wherein the method includes:
a signal sending method is applied to a signal sending end of a signal transmission system, and is characterized by comprising the following steps:
decomposing an initial signal output by a signal source to generate at least two decomposed signals;
and transmitting the at least two decomposed signals through at least two isolated transmission units, wherein the isolated transmission units correspond to the decomposed signals one to one.
Further, decomposing the initial signal output by the signal source to generate at least two decomposed signals, including:
determining the half-wave width of the decomposed signals according to the half-wave width of the initial signals and the number of the decomposed signals;
determining the waveform of each decomposed signal according to the waveform of the initial signal;
determining the transmission time difference of two adjacent decomposed signals according to the half-wave width of the initial signal;
and outputting the at least two decomposed signals according to the half-wave width of the decomposed signals, the waveform of each decomposed signal and the transmission time difference of two adjacent decomposed signals.
Further, when the half-wave width of the decomposed signal is determined according to the half-wave width of the initial signal and the number of the decomposed signals, the formula according to which:
Td＝NT，
wherein, TdThe half-wave width of the decomposed signal is shown, N is the number of the decomposed signals, and T is the half-wave width of the initial signal.
Further, determining the waveform of each decomposed signal according to the waveform of the initial signal includes:
the signal value of each half-wave in the respective decomposed signal is determined from the signal value of each half-wave in the initial signal.
Further, when the signal value of each half-wave in each decomposed signal is determined according to the signal value of each half-wave in the initial signal, the formula according to which the signal value of each half-wave in each decomposed signal is as follows:
B(n，k)＝A(k-1)N+n，(k＝1，2，3，4......)；
where N denotes the number of the decomposed signal, k is the number of half-wave in the decomposed signal, N is the number of the decomposed signals, B(n，k)For the signal value of the kth half-wave in the nth split signal, A(k-1)N+nIs the signal value of the (k-1) N + N half wave in the initial signal.
Further, determining the transmission time difference of two adjacent decomposed signals according to the half-wave width of the initial signal, comprising:
determining the transmission time difference to be equal to a half-wave width of the initial signal.
The invention also provides a signal receiving method, which is applied to a signal receiving end of a signal transmission system and comprises the following steps:
receiving at least two decomposed signals transmitted by a signal transmitting end through at least two isolated transmission units, wherein the isolated transmission units correspond to the decomposed signals one to one;
generating a composite signal based on the at least two decomposed signals; wherein the synthesized signal is the same as the initial signal output by the signal source.
Further, generating a composite signal based on the at least two decomposed signals, comprising:
determining the half-wave width of the synthesized signal according to the half-wave width of the decomposed signals and the number of the decomposed signals;
determining a target decomposition signal corresponding to each half-wave according to the half-wave serial number of each half-wave in the synthesized signal;
and determining the signal value of each half wave according to the target decomposition signal corresponding to each half wave in sequence.
Further, when the half-wave width of the synthesized signal is determined according to the half-wave width of the decomposed signal and the number of the decomposed signals, the formula according to which:
Tc＝Td/N，
wherein, TcFor half-wave width of the combined signal, TdN is the number of decomposed signals in order to resolve the half-wave width of the signals.
Further, when the target decomposed signal corresponding to each half-wave is determined according to the half-wave serial number of each half-wave in the synthesized signal, the formula according to which:
wherein N represents the serial number of the decomposed signals, C is the serial number of the half-wave in the synthesized signal, and N is the number of the decomposed signals.
Further, determining the signal value of each half-wave according to the target decomposition signal corresponding to each half-wave in sequence, including:
and sequentially determining the corresponding time period of each half wave in the corresponding target decomposition signal, and determining the signal value in the time period as the signal value of the corresponding half wave.
The present invention also provides a signal transmission apparatus for implementing the signal transmission method, the signal transmission apparatus including:
the signal transmitting terminal is connected with the signal source at the input end and used for decomposing the initial signal output by the signal source to generate at least two decomposed signals;
and the input end of each isolation transmission unit is connected with the signal sending end, and the output end of each isolation transmission unit is connected with the signal receiving end and used for transmitting the corresponding decomposed signal.
Furthermore, a first terminal of an input end of the isolation transmission unit is connected with the signal transmitting end, and a second terminal of the input end of the isolation transmission unit is grounded; the first terminal of the output end of the signal receiving circuit is connected with the signal receiving end, and the second terminal of the output end of the signal receiving circuit is grounded; the isolation transmission unit is an optical coupler isolator.
The present invention also provides a signal receiving apparatus for implementing the signal receiving method, the signal receiving apparatus comprising:
the signal receiving end is used for receiving at least two decomposed signals transmitted by the signal transmitting end through at least two isolated transmission units and generating a synthesized signal based on the at least two decomposed signals; wherein the composite signal is the same as the initial signal.
The invention also provides a signal transmission system, which is characterized by comprising the signal sending device and the signal receiving device.
The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described signal transmission method.
The present invention also provides another computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described signal receiving method.
By applying the technical scheme of the invention, the initial signal output by the signal source is decomposed to generate at least two decomposed signals; transmitting the at least two decomposed signals through corresponding isolated transmission units; the at least two decomposed signals are transmitted through the corresponding isolation transmission units, and the transmission rate of the signals can be reduced in a signal decomposition mode, so that the requirement on the transmission rate of the isolation transmission units is reduced, and the application range of the isolation transmission units is widened.
Drawings
Fig. 1 is a flowchart of a signal transmission method according to an embodiment of the present invention;
FIG. 2 is a signal decomposition diagram according to an embodiment of the present invention;
FIG. 3 is a signal decomposition diagram according to another embodiment of the present invention;
fig. 4 is a flowchart of a signal receiving method according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of signal synthesis according to an embodiment of the present invention;
FIG. 6 is a flow chart of a signal transmission method according to an embodiment of the present invention;
FIG. 7 is a signal decomposition diagram according to yet another embodiment of the present invention;
FIG. 8 is a schematic diagram of signal synthesis according to another embodiment of the present invention;
fig. 9 is a structural diagram of a signal transmission apparatus according to an embodiment of the present invention;
fig. 10 is a structural view of a signal transmission apparatus according to another embodiment of the present invention;
fig. 11 is a structural diagram of a signal transmission apparatus according to an embodiment of the present invention;
fig. 12 is a block diagram of a signal receiving apparatus according to another embodiment of the present invention;
fig. 13 is a block diagram of a signal transmission system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used herein to describe terminals in embodiments of the present invention, these terminals should not be limited by these terms. These terms are only used to distinguish different terminals. For example, the first terminal may also be referred to as a second terminal, and similarly, the second terminal may also be referred to as a first terminal without departing from the scope of embodiments of the present invention.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (a stated condition or event)" may be interpreted as "upon determination" or "in response to determination" or "upon detection (a stated condition or event)" or "in response to detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
The present embodiment provides a signal sending method, which is applied to a signal sending end of a signal transmission system, and fig. 1 is a flowchart of the signal sending method according to the embodiment of the present invention, as shown in fig. 1, the method includes:
s101, decomposing the initial signal output by the signal source to generate at least two decomposed signals.
The signal transmitting end decomposes the initial signal with relatively high speed into at least two decomposed signals with relatively low speed by controlling the conduction time sequence and the time interval of the isolation transmission unit after receiving the initial signal sent by the signal source.
S102, at least two decomposed signals are transmitted through at least two isolation transmission units, wherein the isolation transmission units correspond to the decomposed signals one to one.
In this embodiment, each isolation transmission unit is responsible for transmitting a decomposed signal, and in the transmission process, different decomposition signals are transmitted by controlling different isolation transmission units to be sequentially conducted, so that a plurality of decomposed signals decomposed by the signal transmitting end are respectively transmitted to the signal receiving end.
In the signal transmission method of this embodiment, at least two decomposed signals are generated by decomposing an initial signal output by a signal source; and each decomposed signal is transmitted through the isolation transmission unit which corresponds to the decomposed signal one by one, and the transmission rate of the signal can be reduced in a signal decomposition mode, so that the requirement on the transmission rate of the isolation transmission unit is reduced, and the application range of the isolation transmission unit is widened.
Example 2
In this embodiment, to implement decomposition of the initial signal, the step S101 specifically includes: determining the half-wave width of the decomposed signals according to the half-wave width of the initial signals and the number of the decomposed signals; determining the waveform of each decomposed signal according to the waveform of the initial signal; determining the transmission time difference of two adjacent decomposed signals according to the half-wave width of the initial signal; and outputting the at least two decomposed signals according to the half-wave width of the decomposed signals, the waveform of each decomposed signal and the transmission time difference of two adjacent decomposed signals.
Specifically, when the half-wave width of the decomposed signal is determined according to the half-wave width of the initial signal and the number of the decomposed signals, the formula according to which: t isdNT, whereindThe half-wave width of the decomposed signal is shown, N is the number of the decomposed signals, and T is the half-wave width of the initial signal. That is, if the signal transmitting end decomposes the initial signal into N decomposed signals, the half-wave width of each decomposed signal is equally multiplied by the number of decomposed signals by the half-wave width of the initial signal. For example, if the number of decomposed signals is 2, and the half-wave width of the original signal is T, the half-wave width of each decomposed signal is 2T, it should be noted that the half-wave width in the present invention refers to the shortest time for the same signal value to last, and in the implementation process, a time period may occur in which the same signal value may last for a plurality of half-wave widths, for example, if the shortest time for the same signal value to last is 1ms, but the signal value "1" may last for 3ms, in the above case, the half-wave width is still 1ms, and only the output duration of the signal value "1" is extended by repeatedly outputting the same signal value "1" within 3 half-wave widths.
After the half-wave width of the decomposed signal is determined, the waveform of each decomposed signal needs to be determined according to the waveform of the initial signal, that is, the signal value of each half-wave in each decomposed signal is determined according to the signal value of each half-wave in the initial signal, and when the above steps are performed, the formula according to which is:
B(n，k)＝A(k-1)N+n，(k＝1，2，3，4......)；
where N denotes the number of the decomposed signal, k is the number of half-wave in the decomposed signal, N is the number of the decomposed signals, B(n，k)For the signal value of the kth half-wave in the nth split signal, A(k-1)N+nIs the signal value of the (k-1) N + N half wave in the initial signal.
Fig. 2 is a signal decomposition diagram according to an embodiment of the invention, as shown in fig. 2, the signal value of the initial signal a is 110001, the signal sending end decomposes the initial signal a into 2 decomposed signals above the first decomposed signal B1 and the second decomposed signal B2, so that N is 2, the transmission time difference between the second decomposed signal B2 and the first decomposed signal B1 is T, that is, the second decomposed signal B2 lags behind the first decomposed signal B1 by T, and the signal value B of the 1 st half-wave of the first decomposed signal B1 is determined(1，1)If N is 1 and k is 1, (k-1) N + N is 1, i.e. the signal value B of the 1 st half-wave of the first decomposition signal B1, can be calculated according to the formula(1，1)Equal to the signal value 1 of the 1 st half-wave of the initial signal, and the signal value B of the 2 nd half-wave of the first decomposed signal B1 is determined(1，2)If N is 1 and k is 2, (k-1) N + N is 3, i.e. the signal value B of the 2 nd half-wave of the first decomposition signal B1, can be calculated according to the formula(1，2)Equal to the signal value 0 of the 3 rd half-wave of the initial signal, and the signal value B of the 3 rd half-wave of the first decomposed signal B1 is determined(1，3)If N is 1 and k is 3, (k-1) N + N is 5, i.e. the signal value B of the 3 rd half-wave of the first decomposition signal B1, can be calculated according to the formula(1，3)A signal value 0 equal to the 5 th half-wave of the initial signal, so far obtaining a first decomposed signal B1 with a signal value of 100; determining the signal value B of the 1 st half-wave of the second decomposition signal B2(2，1)If N is 2 and k is 1, (k-1) N + N is 2, i.e. the signal value B of the 1 st half-wave of the second decomposition signal B2, can be calculated according to the formula(2，1)Is equal to the initialSignal value 1 for the 2 nd half wave of the signal; determining the signal value B of the 2 nd half-wave of the second decomposition signal B2(2，2)If N is 2 and k is 2, (k-1) N + N is 4, i.e. the signal value B of the 2 nd half-wave of the second decomposition signal B2, can be calculated according to the formula(2，2)Signal value 0 equal to the 4 th half-wave of the initial signal; determining the signal value B of the 3 rd half-wave of the second decomposition signal B2(2，3)If N is 2 and k is 3, (k-1) N + N is 6, i.e. the signal value B of the 3 rd half-wave of the second decomposition signal B2, can be calculated according to the formula(2，2)Equal to the signal value 1 of the 6 th half wave of the initial signal, so far a second decomposition signal B2 is obtained with a signal value of 101.
Fig. 3 is a signal decomposition diagram according to another embodiment of the invention, as shown in fig. 3, the signal transmitting end decomposes an initial signal with a signal value of 110001 into a first decomposed signal B1 and a second decomposed signal B2, where N is 3 above the third decomposed signal B3, the second decomposed signal B2 lags behind the first decomposed signal B1, the third decomposed signal B3 lags behind the second decomposed signal B2, the lag time lengths are all T, and the signal value B of the 1 st half-wave of the first decomposed signal B1 is determined(1，1)If N is 1 and k is 1, (k-1) N + N is 1, i.e. the signal value B of the 1 st half-wave of the first decomposition signal B1, can be calculated according to the formula(1，1)Signal value 1 equal to the 1 st half wave of the initial signal; determining the signal value B of the 2 nd half-wave of the first partial signal B1(1，2)If N is 1 and k is 2, (k-1) N + N is 4, i.e. the signal value B of the 2 nd half-wave of the first decomposition signal B1, can be calculated according to the formula(1，2)A signal value 0 equal to the 4 th half-wave of the initial signal, to which a first decomposed signal B1 with a signal value of 10 is obtained; determining the signal value B of the 1 st half-wave of the second decomposition signal B2(2，1)If N is 2 and k is 1, (k-1) N + N is 2, i.e. the signal value B of the 1 st half-wave of the second decomposition signal B2, can be calculated according to the formula(2，1)Equal to the signal value 1 of the 2 nd half-wave of the initial signal, and the signal value B of the 2 nd half-wave of the second decomposed signal B2 is determined(2，2)When N is 2 and k is 2, (k-1) N + N is 5, i.e. the second decomposition signal B, can be calculated according to the formula2 signal value B of the 2 nd half wave(2，2)A signal value 0 equal to the 5 th half-wave of the initial signal, to which a second decomposition signal B2 with a signal value of 10 is obtained; after determination of the signal value B of the 1 st half-wave of the third decomposition signal B3(3，1)If N is 3 and k is 1, (k-1) N + N is 3, i.e. the signal value B of the 1 st half-wave of the third decomposition signal B3, can be calculated according to the formula(3，1)Equal to the signal value 0 of the 3 rd half-wave of the initial signal, and the signal value B of the 2 nd half-wave of the third decomposed signal B3(3，2)If N is 3 and k is 2, (k-1) N + N is 6, i.e. the signal value B of the 2 nd half-wave of the third decomposition signal B3, can be calculated according to the formula(3，2)Equal to the signal value 1 of the 6 th half wave of the initial signal, so far a third resolved signal with a signal value of 01 is obtained. The above formula is a general formula according to which signals are decomposed, and when the number of decomposed signals is different, parameters in the above formula change accordingly.
After the half-wave width and the waveform of the decomposed signal are determined, the turn-on timing of different isolation transmission units needs to be controlled, so that different decomposed signals are transmitted in sequence, that is, the transmission time difference between two adjacent decomposed signals needs to be determined. That is, different isolated transmission units are controlled to sequentially start outputting signals at a time spaced by a half-wave width.
For example, if the half-wave width of the initial signal is T, and 3 decomposed signals are transmitted through 3 isolated transmission units, the first isolated transmission unit is controlled to be turned on first, the first decomposed signal starts to be transmitted, after the interval of T time, the second isolated transmission unit is controlled to be turned on, the second decomposed signal starts to be transmitted, and after the interval of T time, the third isolated transmission unit is controlled to be turned on, the third decomposed signal starts to be transmitted.
Example 3
The present embodiment provides a signal receiving method, which is applied to a signal receiving end of a signal transmission system, and fig. 4 is a flowchart of the signal receiving method according to the embodiment of the present invention, as shown in fig. 4, the method includes:
s401, a signal receiving end receives at least two decomposed signals transmitted by at least two isolated transmission units, wherein the isolated transmission units correspond to the decomposed signals one to one.
Each isolation transmission unit is responsible for transmitting a decomposition signal, and different decomposition signals are transmitted by sequentially conducting different isolation transmission units in the transmission process, so that the signal receiving end can sequentially receive the decomposition signals transmitted by different isolation transmission units.
S402, generating a composite signal based on at least two decomposition signals; wherein, the synthesized signal is the same as the initial signal output by the signal source.
The signal receiving end synthesizes the sequentially received decomposed signals transmitted by different isolation transmission units through a preset rule to generate a synthesized signal which has the same half-wave width and waveform as the initial signal, namely, the synthesized signal is restored to the initial signal according to the decomposed signal.
In the signal receiving method of this embodiment, at least two decomposed signals transmitted by the isolation transmission unit are synthesized and restored to the initial signal, so that it is ensured that the finally received signal is the same as the initial signal, and the low-rate signal transmitted by the isolation transmission unit is restored to the high-rate signal.
Example 4
In this embodiment, another signal receiving method is provided, in order to implement synthesis of at least two decomposed signals to generate a synthesized signal, where the step S402 specifically includes: determining the half-wave width of the synthesized signal according to the half-wave width of the decomposed signals and the number of the decomposed signals; determining a target decomposition signal corresponding to each half-wave according to the half-wave serial number of each half-wave in the synthesized signal; and determining the signal value of each half-wave in sequence according to the target decomposition signal corresponding to each half-wave, specifically, determining the corresponding time period of each half-wave in the target decomposition signal corresponding to each half-wave in sequence, and determining the signal value in the time period as the signal value of the half-wave corresponding to the signal value.
In specific implementation, when the half-wave width of the synthesized signal is determined according to the half-wave width of the decomposed signal and the number of the decomposed signals, the formula according to which the half-wave width of the synthesized signal is determined is as follows: t isc＝TdN, wherein, TcFor half-wave width of the combined signal, TdN is the number of decomposed signals in order to resolve the half-wave width of the signals. Since the original signal is decomposed into at least two decomposed signals during signal transmission, each of which has a half-wave width NT, i.e., the half-wave width NT of the original signal multiplied by the number of the decomposed signals, the half-wave width NT of the original signal should be equal to the half-wave width NT of the decomposed signals divided by the number of the decomposed signals during the restoration of the original signal.
After the half-wave width of the synthesized signal is determined, determining the waveform of the synthesized signal, first, determining a target decomposed signal corresponding to each half-wave according to the half-wave serial number of each half-wave in the synthesized signal a, and in specific implementation, executing the above steps according to the following formula:
wherein N represents the serial number of the decomposed signal, C is the serial number of the half-wave in the synthesized signal, N is the number of the decomposed signal, and C% N represents the remainder obtained by dividing C by N. The purpose of determining the target decomposed signal is to finally determine from which decomposed signal the signal values of the respective half-wavelets of the composite signal are determined.
Fig. 5 is a schematic diagram of signal synthesis according to an embodiment of the present invention, where, as shown in fig. 5, the decomposed signals include a first decomposed signal B1 with a signal value of 10, a second decomposed signal B2 with a signal value of 10, and a third decomposed signal B3 with a signal value of 01, where the number N of the decomposed signals is 3, where when determining the signal value of the first half-wave of the synthesized signal a ', C is 1, N is 3, and C% N is not equal to 0, N is calculated according to the formula 1, that is, the first decomposed signal B1 is determined as the target decomposed signal, and when the synthesized signal a' is juxtaposed with the decomposed signals according to the time axis, the first half-wave of the synthesized signal a 'corresponds to 0 to 1Ts in the first decomposed signal B1, so that the signal value of the first half-wave of the synthesized signal a' is equal to the signal value of 0 to 1Ts in the first decomposed signal B1; when determining the signal value of the second half-wave of the synthesized signal a ', C ═ 2, N ═ 3, and C% N ≠ 0, calculating N ═ 2 according to the formula, i.e. determining the second decomposed signal B2 as the target decomposed signal, when the synthesized signal a' is juxtaposed to the decomposed signals according to the time axis, the second half-wave of the synthesized signal a 'corresponds to 1-2 Ts in the second decomposed signal B2, and therefore the signal value of the second half-wave of the synthesized signal a' is equal to the signal value 1 of T-2 Ts in the second decomposed signal B2; when the signal value of the third half-wave of the synthesized signal a 'is determined, C is 3, N is 3, and C% N is 0, N is 3, i.e., the third decomposed signal B3 is determined to be the target decomposed signal, when the synthesized signal a' is juxtaposed with the decomposed signals according to the formula, the third half-wave of the synthesized signal a 'corresponds to 2 to 3Ts in the third decomposed signal B3, and therefore, the signal value of the third half-wave of the synthesized signal a' is equal to 0, which is 2 to 3Ts in the third decomposed signal B3; when determining the signal value of the fourth half-wave of the combined signal a ', when C is 4, N is 3, and C% N is not equal to 0, calculating N is 1 according to the formula, i.e. determining the first decomposed signal B1 as the target decomposed signal, when the combined signal a ' is juxtaposed with the decomposed signal according to the time axis, the fourth half-wave of the combined signal a ' corresponds to 3 to 4Ts in the first decomposed signal B1, so that the signal value of the fourth half-wave of the combined signal a ' is equal to the signal value 0 of 3 to 4Ts in the first decomposed signal B1, when determining the signal value of the fifth half-wave of the combined signal a ', when C is 5, N is 3, and C% N is not equal to 0, calculating N is 2 according to the formula, i.e. determining the second decomposed signal B2 as the target decomposed signal, when the combined signal a ' is juxtaposed with the decomposed signal, the fifth half-wave of the combined signal a ' corresponds to 5t in the second decomposed signal B2, therefore, the signal value of the fifth half-wave of the synthesized signal a 'is equal to the signal value 0 of 4 to 5Ts in the second decomposed signal B2, when determining the signal value of the sixth half-wave of the synthesized signal a', C is 6, N is 3, and C% N is 0, N is 3 is calculated according to the formula, i.e., the third decomposed signal B3 is determined to be the target decomposed signal, when the synthesized signal a 'is juxtaposed with the decomposed signal according to the time axis, the sixth half-wave of the synthesized signal a' corresponds to 5 to 6Ts in the third decomposed signal B3, and thus, the signal value of the sixth half-wave of the synthesized signal a 'is equal to the signal value 1 of 5 to 6Ts in the third decomposed signal B3, and thus, the complete synthesized signal a' is obtained: 110001.
example 5
Fig. 6 is a flowchart of a signal transmission method according to an embodiment of the present invention, and as shown in fig. 6, the method includes:
and S1, decomposing the high-speed signal A to obtain N low-speed signals.
A high-speed signal a with a rate F and a half-wave width T (i.e., the initial signal a in the above-described embodiment) is decomposed into N low-speed signals B1, B2, and B3.. Bn with a rate F/N, a transmission time difference T, and a half-wave width NT (i.e., the decomposed signals in the above-described embodiment). Wherein, the waveforms of the N low-speed signals B1, B2, B3.. Bn are determined according to the following formula:
B(n，k)＝A(k-1)N+n，(k＝1，2，3，4......)；
where N denotes the number of the decomposed signal, k is the number of half-wave in the decomposed signal, N is the number of the decomposed signals, B(n，k)For the signal value of the kth half-wave in the nth split signal, A(k-1)N+nIs the signal value of the (k-1) N + N half wave in the initial signal.
In this embodiment, the high-speed signal a with the rate F is decomposed into three signals with the rate F/3, the transmission time difference T, and the half-wave width three times as large as the half-wave width of the height signal a by the signal sending end: a low speed signal B1, a low speed signal B2, and a low speed signal B3. Fig. 7 is a signal decomposition diagram according to another embodiment of the invention, as shown in fig. 7:
the signal value of signal a is: 10101010101010101011101001001101010, the signal value of the low speed signal B1 is 101010100001, the signal value of the low speed signal B2 is 010101111110 and the signal value of the low speed signal B3 is 10101010010 after decomposition according to the above formula.
And S2, respectively transmitting N low-speed signals through N optical coupler isolators. Wherein, each optical coupler isolator is responsible for transmitting a low-speed signal. In this embodiment, N is 3.
S3, the N low-speed signals are synthesized.
In this embodiment, signals are sequentially taken from the first low-speed signal B1, the second low-speed signal B2, and the third low-speed signal B3 as signal values of the current half-wave of the high-speed signal a '(i.e., the composite signal a' in the above-described embodiment) at time intervals of T. Fig. 8 is a schematic diagram of signal synthesis according to another embodiment of the present invention, as shown in fig. 8, first determining a half-wave serial number of each half-wave in the high-speed signal a', and then determining a target low-speed signal corresponding to each half-wave, where the formula for determining the target low-speed signal corresponding to each half-wave is as follows:
And S4, completing signal transmission.
According to the signal transmission method, the high-speed signal is decomposed into the plurality of low-speed signals, and then the plurality of low-speed signals are combined into the high-speed signal, so that the communication rate of the optical coupler isolator is improved. The optical coupling isolator can be effectively used in a high-speed signal system; or a common optical coupler isolator can be used for replacing a high-speed optical coupler isolator, so that the circuit cost is reduced.
Example 6
The present embodiment provides a signal transmitting apparatus for implementing the signal transmitting method in the above embodiments, and fig. 9 is a structural diagram of the signal transmitting apparatus according to the embodiment of the present invention, as shown in fig. 9, the apparatus includes:
a signal transmitting terminal 10, an input end of which is connected to a signal source, and configured to decompose an initial signal output by the signal source to generate at least two decomposed signals;
the input end of each isolation transmission unit 20 is connected to the signal transmitting end, the output end of each isolation transmission unit 20 is connected to the signal receiving end, and each isolation transmission unit 20 is used for transmitting the corresponding decomposed signal.
The signal transmitting apparatus of this embodiment decomposes an initial signal into at least two decomposed signals through the signal transmitting terminal 10, and transmits the decomposed signals through the at least two isolation transmission units 20 in a one-to-one correspondence manner, so that the transmission rate of the signals can be reduced in a signal decomposition manner, thereby reducing the requirement on the transmission rate of the isolation transmission units and widening the application range of the isolation transmission units.
Fig. 10 is a block diagram of a signal transmitting apparatus according to another embodiment of the present invention, and as shown in fig. 10, a signal transmitting end 10 includes: a first determining unit 101, configured to determine a half-wave width of the decomposed signal according to the half-wave width of the initial signal and the number of the decomposed signals; a second determining unit 102 for determining a waveform of each of the decomposed signals from the waveform of the initial signal; a third determining unit 103, configured to determine a transmission time difference between two adjacent decomposed signals according to a half-wave width of the initial signal; an output unit 104 for outputting the at least two decomposed signals according to a half-wave width of the decomposed signals, a waveform of each decomposed signal, and a transmission time difference of two adjacent decomposed signals.
The second determining unit 102 is specifically configured to: the signal value of each half-wave in the respective decomposed signal is determined from the signal value of each half-wave in the initial signal.
A first terminal of an input end of the isolation transmission unit 20 is connected to the signal transmitting end 10, and a second terminal is grounded; a first terminal of an output end of the isolation transmission unit is connected to the signal receiving end, a second terminal of the output end of the isolation transmission unit is grounded, and the isolation transmission unit 20 is an optical coupler isolator.
Example 7
This embodiment provides a signal receiving apparatus for implementing the above signal receiving method, and fig. 11 is a structural diagram of a signal transmitting apparatus according to an embodiment of the present invention, as shown in fig. 11, the apparatus includes:
a signal receiving end 30, configured to receive at least two decomposed signals transmitted by a signal transmitting end through at least two isolated transmission units 20, and generate a synthesized signal based on the at least two decomposed signals; the half-wave width and the waveform of the synthesized signal are the same as those of the initial signal.
Fig. 12 is a block diagram of a signal receiving apparatus according to another embodiment of the present invention, and as shown in fig. 12, a signal receiving end 30 includes: a fourth determining unit 301, configured to determine a half-wave width of the synthesized signal according to the half-wave width of the decomposed signals and the number of the decomposed signals; a fifth determining unit 302, configured to determine, according to a half-wave serial number of each half-wave in the synthesized signal, a target decomposed signal corresponding to each half-wave; a sixth determining unit 303, configured to determine a signal value of each half-wave sequentially according to the target decomposed signal corresponding to each half-wave. The sixth determining unit 303 is specifically configured to: and sequentially determining the corresponding time period of each half wave in the synthesized signal in the corresponding target decomposition signal, and determining the signal value in the time period as the signal value of the half wave.
In the signal receiving apparatus of this embodiment, the signal receiving end 30 synthesizes at least two decomposed signals transmitted by the isolation transmission unit 20, and restores the synthesized signals back to the initial signals, so as to ensure that the finally received signals are the same as the initial signals, thereby realizing the restoration of the low-rate signals transmitted by the isolation transmission unit to the high-rate signals.
Example 8
Fig. 13 is a structural diagram of a signal transmission system according to an embodiment of the present invention, and as shown in fig. 13, the signal transmission system includes the above signal transmitting apparatus, which includes: the signal transmitting terminal MCU1 is used for decomposing a high-speed signal A to generate a low-speed signal B1, a low-speed signal B2 and a low-speed signal B3, and further comprises at least two isolation transmission units OC which are used for transmitting the low-speed signal B1, the low-speed signal B2 and the low-speed signal B3, and further comprises a signal receiving device which comprises a signal receiving terminal MCU2 and is used for synthesizing a high-speed signal A' based on the low-speed signal B1, the low-speed signal B2 and the low-speed signal B3, wherein the isolation transmission units are optical coupling isolators, a first terminal of the input end of each optical coupling isolator is connected with the signal transmitting terminal MCU1, and a second terminal of each optical coupling isolator is grounded; the first terminal of the output end of the isolation transmission unit is connected with the signal receiving end MCU2, and the second terminal of the output end of the isolation transmission unit is grounded, so that a signal with a high transmission rate can be transmitted through the isolation transmission unit with a low transmission rate.
Example 9
The present embodiment provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the signal transmission, signal reception, or signal transmission method in the above-described embodiments.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (15)
1. A signal sending method is applied to a signal sending end of a signal transmission system, and is characterized by comprising the following steps:
decomposing an initial signal output by a signal source to generate at least two decomposed signals, wherein the method comprises the following steps: determining the half-wave width of the decomposed signals according to the half-wave width of the initial signals and the number of the decomposed signals; determining the waveform of each decomposed signal according to the waveform of the initial signal; determining the transmission time difference of two adjacent decomposed signals according to the half-wave width of the initial signal; outputting the at least two decomposed signals according to a half-wave width of the decomposed signals, a waveform of each decomposed signal and a transmission time difference of two adjacent decomposed signals;
and transmitting the at least two decomposed signals through at least two isolated transmission units, wherein the isolated transmission units correspond to the decomposed signals one to one.
2. The method of claim 1, wherein the half-wave width of the decomposed signal is determined according to the half-wave width of the original signal and the number of the decomposed signals according to the formula:
Td＝NT，
wherein, TdThe half-wave width of the decomposed signal is shown, N is the number of the decomposed signals, and T is the half-wave width of the initial signal.
3. The method of claim 1, wherein determining the waveform of each decomposed signal from the waveform of the original signal comprises:
the signal value of each half-wave in the respective decomposed signal is determined from the signal value of each half-wave in the initial signal.
4. A method as claimed in claim 3, characterized in that the signal value for each half-wave in the respective decomposed signal is determined from the signal value for each half-wave in the initial signal according to the formula:
B(n，k)＝A(k-1)N+n，(k＝1，2，3，4......)；
where N denotes the number of the decomposed signal, k is the number of half-wave in the decomposed signal, N is the number of the decomposed signals, B(n，k)For the signal value of the kth half-wave in the nth split signal, A(k-1)N+nIs the signal value of the (k-1) N + N half wave in the initial signal.
5. The method of claim 1, wherein determining the difference between the transmission times of two adjacent decomposed signals according to the half-wave width of the original signal comprises:
determining the transmission time difference to be equal to a half-wave width of the initial signal.
6. A signal receiving method, applied to a signal receiving end of a signal transmission system, the method comprising:
receiving at least two decomposed signals transmitted by a signal transmitting end through at least two isolated transmission units, wherein the isolated transmission units correspond to the decomposed signals one to one;
generating a composite signal based on the at least two decomposed signals; which comprises the following steps: determining the half-wave width of the synthesized signal according to the half-wave width of the decomposed signals and the number of the decomposed signals; determining a target decomposition signal corresponding to each half-wave according to the half-wave serial number of each half-wave in the synthesized signal; determining a signal value of each half-wave according to the target decomposition signal corresponding to each half-wave in sequence; wherein the synthesized signal is the same as the initial signal output by the signal source.
7. The method of claim 6, wherein the half-wave width of the composite signal is determined based on the half-wave width of the decomposed signals and the number of the decomposed signals according to the formula:
Tc＝Td/N，
wherein, TcFor half-wave width of the combined signal, TdN is the number of decomposed signals in order to resolve the half-wave width of the signals.
8. The method of claim 6, wherein the target decomposed signal corresponding to each half-wave is determined according to a half-wave number of each half-wave in the synthesized signal according to a formula:
wherein N represents the serial number of the decomposed signals, C is the serial number of the half-wave in the synthesized signal, and N is the number of the decomposed signals.
9. The method of claim 6, wherein determining the signal value for each half-wave based on the target decomposed signal corresponding to each half-wave in turn comprises:
and sequentially determining the corresponding time period of each half wave in the corresponding target decomposition signal, and determining the signal value in the time period as the signal value of the corresponding half wave.
10. A signal transmission apparatus for implementing the signal transmission method according to any one of claims 1 to 5, the signal transmission apparatus comprising:
the signal transmitting terminal is connected with the signal source at the input end and used for decomposing the initial signal output by the signal source to generate at least two decomposed signals; the signal transmitting end includes: the first determining unit is used for determining the half-wave width of the decomposed signal according to the half-wave width of the initial signal and the number of the decomposed signals; a second determination unit configured to determine a waveform of each of the decomposed signals from the waveform of the initial signal; a third determining unit, configured to determine a transmission time difference between two adjacent decomposed signals according to a half-wave width of the initial signal; an output unit for outputting the at least two decomposed signals according to a half-wave width of the decomposed signals, a waveform of each decomposed signal, and a transmission time difference of two adjacent decomposed signals;
and the input end of each isolation transmission unit is connected with the signal sending end, and the output end of each isolation transmission unit is connected with the signal receiving end and used for transmitting the corresponding decomposed signal.
11. The apparatus of claim 10, wherein the isolated transmission unit has a first terminal of an input terminal connected to the signal transmitting terminal and a second terminal of the input terminal connected to ground; the first terminal of the output end of the signal receiving circuit is connected with the signal receiving end, and the second terminal of the output end of the signal receiving circuit is grounded; the isolation transmission unit is an optical coupler isolator.
12. A signal receiving apparatus for implementing the signal receiving method according to any one of claims 6 to 9, the signal receiving apparatus comprising:
the signal receiving end is used for receiving at least two decomposed signals transmitted by the signal transmitting end through at least two isolated transmission units and generating a synthesized signal based on the at least two decomposed signals; wherein the composite signal is the same as the initial signal;
the signal receiving end includes: a fourth determining unit for determining the half-wave width of the synthesized signal according to the half-wave width of the decomposed signals and the number of the decomposed signals; a fifth determining unit, configured to determine, according to a half-wave sequence number of each half-wave in the synthesized signal, a target decomposed signal corresponding to each half-wave; and the sixth determining unit is used for sequentially determining the signal value of each half wave according to the target decomposition signal corresponding to each half wave.
13. A signal transmission system comprising the signal transmission apparatus of claim 10 or 11 and further comprising the signal reception apparatus of claim 12.
14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the signal transmission method according to any one of claims 1 to 5.
15. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is characterized by carrying out the signal receiving method according to any one of claims 6 to 9.
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