CN110557129A - multi-code system wireless signal muting method - Google Patents
multi-code system wireless signal muting method Download PDFInfo
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- CN110557129A CN110557129A CN201910873662.2A CN201910873662A CN110557129A CN 110557129 A CN110557129 A CN 110557129A CN 201910873662 A CN201910873662 A CN 201910873662A CN 110557129 A CN110557129 A CN 110557129A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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Abstract
The embodiment of the invention relates to a multi-code system wireless signal muting method, which is characterized by comprising the following steps: acquiring a current code system identifier to generate a first identifier; performing recording polling operation on the coded squelch parameter recording file to generate a first record; generating a first total length, a first synchronization duty ratio, a first bit 0 duty ratio and a first bit 1 duty ratio; acquiring and generating a first digital signal; performing a first signal non-noise decision operation on the first digital signal according to the first total length; carrying out signal splitting operation on the first digital signal to generate a first synchronization signal and a first code signal; performing a second signal non-noise determination operation on the first synchronous signal according to the first synchronous signal and the first synchronous ratio; performing a third signal non-noise judgment operation on the first code signal according to the first code signal, the first bit 0 proportion and the first bit 1 proportion; and marking the first digital signal as a valid signal and sending the first digital signal to the signal processing unit.
Description
Technical Field
the invention relates to the technical field of wireless communication, in particular to a multi-code system wireless signal muting method.
background
the wireless signal transceiver is widely used in the application scene of the internet of things, the industrial manufacturing production scene and even the intelligent home scene. The wireless signal transceiver comprises three parts, namely a signal sending unit, a signal receiving unit and a signal processing unit. In daily application, different industrial signal codes are adopted by the wireless signal transceiving equipment based on the use scene difference. Common problems in practical applications of wireless signal transceiving equipment are: 1. because the wireless signal interference of the operating environment is large, the transceiver device performs error identification on the received noise, so that the signal processing unit of the transceiver device performs error instruction operation; 2. the conventional wireless transceiver only supports one code system, so that multiple sets of transceivers need to be equipped in a multi-application scene.
Disclosure of Invention
The object of the present invention is to provide a method for muting a wireless signal with multiple code systems, which comprises converting a received wireless signal into a digital level signal by a signal receiving unit of a transceiver, and performing a muting process again, wherein the muting process utilizes a signal format related to a signal code system to determine, so as to perform a compensation and error correction function on the error conversion of the receiving unit, thereby improving the efficiency of converting the signal and increasing a prevention function on the error processing of the signal with a non-working code system.
In order to achieve the above object, the present invention provides a muting method for multi-code wireless signals, comprising:
the wireless signal transceiver acquires a current code system identifier from a system area of the wireless signal transceiver to generate a first identifier;
The wireless signal transceiver device performs recording polling operation on the coded squelch parameter record file stored in the system area according to the first identifier, extracts the coded squelch parameter record corresponding to the first identifier and generates a first record;
the wireless signal transceiver equipment extracts the total length byte of the signal bit of the first record to generate a first total length, extracts the bit length byte of the synchronous signal of the first record to generate a first synchronous step length, extracts the high-low level ratio byte of the synchronous signal of the first record to generate a first synchronous ratio, extracts the high-low level ratio byte of the bit 0 signal of the first record to generate a first bit 0 ratio, extracts the high-low level ratio byte of the bit 1 signal of the first record to generate a first bit 1 ratio:
the wireless signal transceiver device performs digital signal conversion on a received wireless signal through a signal receiving unit of the wireless signal transceiver device to generate a first digital signal, wherein the first digital signal comprises a plurality of bit signals;
The wireless signal transceiver device performs a first signal non-noise judgment operation on the first digital signal according to the first digital signal and a first total length;
after the first signal non-noise judgment is successfully executed, the wireless signal transceiver device performs a synchronization signal and code signal splitting operation on the first digital signal according to the first digital signal, a first total length and a first synchronization step size to generate a first synchronization signal and a first code signal, wherein the first synchronization signal comprises a plurality of bit signals, and the first code signal comprises a plurality of bit signals;
the wireless signal transceiver performs a second signal non-noise judgment operation on the first synchronous signal according to the first synchronous signal and the first synchronous ratio;
after the second signal non-noise judgment is successfully executed, the wireless signal transceiving equipment carries out third signal non-noise judgment operation on the first code signal according to the first total length, the first synchronization length, the first code signal, the first bit 0 ratio and the first bit 1 ratio;
After the third signal non-noise determination is successfully performed, the wireless signal transceiver device performs a valid signal tagging operation on the first digital signal and transmits the first digital signal to a signal processing unit of the wireless signal transceiver device.
Further, the wireless signal transceiver device obtains the current code system identifier from the system area of the wireless signal transceiver device to generate the first identifier, and the method includes:
the wireless signal transceiver sets the coded squelch parameter record file in the system area, the coded squelch parameter record file comprises a plurality of coded squelch parameter records, and the coded squelch parameter records comprise: a code system identifier, the total length of the signal bit, the bit length of the synchronous signal, the duty ratio of high and low levels of the bit 0 signal, and the duty ratio of high and low levels of the bit 1 signal.
further, the wireless signal transceiver device performs a record polling operation on the coded muting parameter record file stored in the system area according to the first identifier, extracts the coded muting parameter record corresponding to the first identifier, and generates a first record, specifically including:
step 31, the wireless signal transceiver initializes a value of a first index to 1;
step 32, the wireless signal transceiver device obtains the total number of the coded squelch parameter records of the coded squelch parameter record file according to the coded squelch parameter record file, and generates a first total number;
Step 33, the wireless signal transceiver device extracts the first index code system muting parameter recording byte of the code system muting parameter recording file to generate a first polling record;
Step 34, the wireless signal transceiver device extracts the code system identifier of the first polling record according to the first polling record, and generates a first temporary identifier;
step 35, the wireless signal transceiver device determines whether the first temporary identifier is equal to the first identifier, and if the first temporary identifier is equal to the first identifier, the step 38 is performed, and if the first temporary identifier is not equal to the first identifier, the step 36 is performed;
step 36, the wireless signal transceiver adds 1 to the value of the first index;
Step 37, the wireless signal transceiver determines whether the first index is greater than the first total number, and if the first index is greater than the first total number, the step 38 is proceeded to, and if the first index is less than or equal to the first total number, the step 33 is proceeded to;
step 38, the wireless signal transceiver device extracts the first polling record byte and generates the first record.
further, the wireless signal transceiver device performs a first signal non-noise determination operation on the first digital signal according to the first digital signal and the first total length, specifically including:
The wireless signal transceiver acquires the total number of bit signals of the first digital signal according to the first digital signal to generate a first temporary total length;
the first signal non-noise determination is performed successfully when the first temporary total length is equal to the first total length.
Preferably, the method further comprises:
when the first temporary total length is not equal to the first total length, the first signal non-noise judgment fails to be executed, and the wireless signal transceiver device performs noise signal marking operation on the first digital signal and suspends a signal processing flow of the first digital signal.
further, the wireless signal transceiver performs a splitting operation on the first digital signal according to the first digital signal, the first total length, and the first synchronization step size to generate a first synchronization signal and a first code signal, and specifically includes:
the wireless signal transceiver equipment generates a first code length according to the difference obtained by subtracting the first synchronization length from the first total length;
the wireless signal transceiver generates a first code starting bit according to the sum of the value of the first synchronization length and 1;
the wireless signal transceiver equipment extracts continuous bit signals with the length specifically being the first synchronization length from the 1 st bit signal according to the first digital signal to generate the first synchronization signal;
And the wireless signal transceiver equipment extracts continuous bit signals with the length specifically being the length of the first code from the bit signals corresponding to the initial bits of the first code according to the first digital signals to generate the first code signals.
Further, the wireless signal transceiver performs a second signal non-noise determination operation on the first synchronization signal according to the first synchronization signal and the first synchronization ratio, specifically including:
The wireless signal transceiver device counts the total number of high level signals of the first synchronization signal according to the first synchronization signal to generate a first high level total number;
the wireless signal transceiver device counts the total number of low level signals of the first synchronization signal according to the first synchronization signal to generate a first total number of low level signals;
The wireless signal transceiver device uses the first high level total number to perform ratio calculation operation on the first low level total number to generate a first temporary high-low level ratio;
The second signal non-noise determination is performed successfully when the first temporary high-low level ratio is equal to the first synchronization ratio.
preferably, the method further comprises:
when the first temporary high-low level occupation ratio is not equal to the first synchronous occupation ratio, the second signal non-noise judgment fails to be executed, and the wireless signal transceiver device performs noise signal marking operation on the first digital signal and suspends the signal processing flow of the first digital signal.
further, the wireless signal transceiver device performs a third signal non-noise determination operation on the first code signal according to the first total length, the first synchronization length, the first code signal, the first bit 0 fraction, and the first bit 1 fraction, and specifically includes:
step 91, the wireless signal transceiver initializes a value of the second index to 1, initializes a value of the first counter to 0, initializes a value of the second counter to 0, and initializes a value of the third counter to 0;
Step 92, the wireless signal transceiver device generates a second total number according to the difference obtained by subtracting the first synchronization length from the first total length;
step 93, the wireless signal transceiver device extracts the second index bit signal of the first code signal according to the first code signal to generate a first bit signal;
Step 94, the wireless signal transceiver device counts the total number of high level signals of the first bit signal according to the first bit signal to generate a second total number of high level signals;
step 95, the wireless signal transceiver device counts the total number of low level signals of the first bit signal according to the first bit signal to generate a second total number of low level signals;
step 96, the wireless signal transceiver device performs ratio calculation operation on the total number of the second high levels and the total number of the second low levels to generate a second temporary high-low level ratio;
step 97, when the second temporary high-low level ratio is equal to the first bit 0 ratio, the wireless signal transceiver device adds 1 to the value of the first counter;
step 98, when the second temporary high-low level occupation ratio is equal to the first bit 1 occupation ratio, the wireless signal transceiver device adds 1 to the value of the second counter;
step 99, the wireless signal transceiver adds 1 to the value of the second index;
step 100, the wireless signal transceiver device determines whether the second index is greater than the second total number, and if the second index is greater than the second total number, the step 101 is performed, and if the second index is less than or equal to the second total number, the step 93 is performed;
step 101, the wireless signal transceiver device generates the third counter according to the sum of the first counter and the second counter;
step 102, when the third counter equals the second total number, the third signal non-noise determination is successfully performed.
preferably, the method further comprises:
when the third counter is not equal to the second total number, the third signal non-noise judgment fails to be executed, and the wireless signal transceiver device performs noise signal marking operation on the first digital signal and suspends the signal processing flow of the first digital signal.
The invention provides a multi-code system wireless signal squelch method, which generates different bit total length, synchronous signal bit length, synchronous signal high-low level ratio, bit 0 signal high-low level ratio and bit 1 signal high-low level ratio information to preset in a code system squelch parameter recording file according to the signal structure of wireless signals under different code systems. After the wireless signal transceiving equipment completes digital signal conversion on the received wireless signal through the signal receiving unit, noise signal judgment is carried out on the digital signal by using the coded muting parameter of the coded muting parameter recording file: judging the length of the digital signal by using the total bit length corresponding to the current code system, and if the total bit length is not equal to the length of the digital signal, considering the digital signal as a noise signal; judging the synchronous signal of the digital signal by using the high-low level ratio of the synchronous signal corresponding to the current code system, and considering the digital signal as a noise signal if the high-low level ratio of the synchronous signal part in the digital signal is unequal to the high-low level ratio of the synchronous signal; and judging the code command signal of the digital signal by using the high-low level ratio of the bit 0 signal and the high-low level ratio of the bit 1 signal corresponding to the current code system, and if the high-low level ratio of a single bit signal of the code command signal part in the digital signal is not equal to the high-low level ratio of the bit 0 signal and is not equal to the high-low level ratio of the bit 1 signal, determining that the digital signal is a noise signal.
Drawings
fig. 1 is a schematic diagram of a muting method for a multi-code system wireless signal according to an embodiment of the present invention.
fig. 2 is a schematic diagram of a muting method for a multi-code system wireless signal according to a second embodiment of the present invention.
fig. 3 is a schematic diagram of a coded squelch parameter record file according to an embodiment of the present invention.
Fig. 4A is a schematic diagram of a digital signal logic structure according to an embodiment of the present invention.
fig. 4B is a schematic diagram of the ratio of high and low levels of the synchronization signal according to the embodiment of the present invention.
fig. 4C is a schematic diagram of high-low level ratio of the bit 0 signal according to the embodiment of the present invention.
fig. 4D is a schematic diagram of the ratio of the high level to the low level of the bit 1 signal according to the 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.
in a first embodiment of the present invention, as shown in fig. 1, which is a schematic diagram of a muting method for a multi-code system wireless signal according to the first embodiment of the present invention, the method includes the following steps:
Step 1, the wireless signal transceiver acquires a current code system identifier from a system area of the wireless signal transceiver to generate a first identifier.
Here, the wireless signal transceiver device sets a code system muting parameter recording file in addition to the current code system identification parameter as a calibration for the code system of the current operating state in the system area. As shown in fig. 3, which is a schematic diagram of a coded squelch parameter record file provided by an embodiment of the present invention, the coded squelch parameter record file includes a plurality of coded squelch parameter records, and each coded squelch parameter record includes the following information: code system identification information, signal bit total length information, synchronous signal bit length information, synchronous signal high-low level occupation ratio information, bit 0 signal high-low level occupation information and bit 1 signal high-low level occupation information. This information is information common to all code-system radio signals. That is, all coded radio signals included in the method of the present invention have the above parameters.
step 2, the wireless signal transceiver device performs recording polling operation on the coded squelch parameter record file stored in the system area according to the first identifier, extracts the coded squelch parameter record corresponding to the first identifier, generates a first record,
the method specifically comprises the following steps: step 21, the wireless signal transceiver initializes the value of the first index to 1;
Step 22, the wireless signal transceiver acquires the total number of the coded squelch parameter records of the coded squelch parameter record file according to the coded squelch parameter record file, and generates a first total number;
step 23, the wireless signal transceiver device extracts the first index code system squelch parameter recording byte of the code system squelch parameter recording file to generate a first polling record;
step 24, the wireless signal transceiver device extracts the code system identifier of the first polling record according to the first polling record to generate a first temporary identifier;
step 25, the wireless signal transceiver device determines whether the first temporary identifier is equal to the first identifier, and if the first temporary identifier is equal to the first identifier, the step 28 is proceeded, and if the first temporary identifier is not equal to the first identifier, the step 26 is proceeded;
Step 26, the wireless signal transceiver adds 1 to the value of the first index;
step 27, the wireless signal transceiver determines whether the first index is greater than the first total number, and if the first index is greater than the first total number, the step 28 is proceeded to, and if the first index is less than or equal to the first total number, the step 23 is proceeded to;
step 28, the wireless signal transceiver device extracts the first polling record byte and generates a first record.
And 3, the wireless signal transceiver equipment extracts the total length byte of the signal bit of the first record to generate a first total length according to the first record, extracts the bit length byte of the synchronous signal of the first record to generate a first synchronous step length, extracts the high-low level ratio byte of the synchronous signal of the first record to generate a first synchronous ratio, extracts the high-low level ratio byte of the bit 0 signal of the first record to generate a first bit 0 ratio, and extracts the high-low level ratio byte of the bit 1 signal of the first record to generate a first bit 1 ratio.
And 4, the wireless signal transceiver performs digital signal conversion on the received wireless signal through a signal receiving unit of the wireless signal transceiver to generate a first digital signal, wherein the first digital signal comprises a plurality of bit signals.
step 5, the wireless signal transceiver device performs a first signal non-noise judgment operation on the first digital signal according to the first digital signal and the first total length,
The method specifically comprises the following steps: step 51, the wireless signal transceiver device obtains the total number of bit signals of the first digital signal according to the first digital signal, and generates a first temporary total length;
In step 52, the first signal non-noise determination is successfully performed when the first temporary total length is equal to the first total length.
step 6, after the first signal non-noise judgment is successfully executed, the wireless signal transceiver device performs the operation of splitting the synchronization signal and the code signal on the first digital signal according to the first digital signal, the first total length and the first synchronization length to generate a first synchronization signal and a first code signal, wherein the first synchronization signal comprises a plurality of bit signals, the first code signal comprises a plurality of bit signals,
the method specifically comprises the following steps: step 61, the wireless signal transceiver device generates a first code length according to the difference obtained by subtracting the first synchronization length from the first total length;
Step 62, the wireless signal transceiver device generates a first code start bit according to the sum of the value of the first synchronization length plus 1;
Step 63, the wireless signal transceiver device extracts a continuous bit signal with a length specifically being a first synchronization length from the 1 st bit signal according to the first digital signal, and generates a first synchronization signal;
step 64, the wireless signal transceiver device extracts continuous bit signals with a length specifically the first code length from the bit signals corresponding to the first code start bits according to the first digital signals, and generates first code signals.
Here, the logical structure of the wireless signal of multiple code systems related to the method of the present invention is specifically: the signal is composed of two main signals, the front end of the signal is a synchronous signal, and the back end of the synchronous signal is a code signal. The method is used for splitting a synchronous signal and a code signal, and aims to judge the high-low level ratio relation of the synchronous signal and the code signal in the follow-up process.
step 7, the wireless signal transceiver performs a second signal non-noise determination operation on the first synchronization signal according to the first synchronization signal and the first synchronization ratio,
the method specifically comprises the following steps: step 71, the wireless signal transceiver device counts the total number of high level signals of the first synchronization signal according to the first synchronization signal to generate a first high level total number;
step 72, the wireless signal transceiver device counts the total number of low level signals of the first synchronization signal according to the first synchronization signal to generate a first total number of low level signals;
Step 73, the wireless signal transceiver performs ratio calculation operation on the total number of the first high levels and the total number of the first low levels to generate a first temporary high-low level ratio;
step 74, the second signal non-noise determination is performed successfully when the first temporary high-low level ratio is equal to the first synchronization ratio.
here, the synchronization signal is a series of continuous signals, and each bit signal has no specific meaning. Therefore, the comparison of the high-low level ratio of the full signal is only needed, the specific operation is to count the number of the high-low levels of the full signal of the synchronous signal respectively, calculate the high-low level ratio by using the number of the high-low levels compared with the number of the high-low levels, and finally compare the ratio with the preset correct high-low level ratio information of the synchronous signal. Equality indicates that the synchronization signal matches the characteristics of the wireless synchronization signal currently expected to be received.
step 8, after the second signal non-noise judgment is successfully executed, the wireless signal transceiver performs a third signal non-noise judgment operation on the first code signal according to the first total length, the first synchronization length, the first code signal, the first bit 0 ratio and the first bit 1 ratio,
the method specifically comprises the following steps: step 81, the wireless signal transceiver initializes the value of the second index to 1, initializes the value of the first counter to 0, initializes the value of the second counter to 0, and initializes the value of the third counter to 0;
step 82, the wireless signal transceiver device generates a second total number according to the difference obtained by subtracting the first synchronization length from the first total length;
Step 83, the wireless signal transceiver device extracts a second index bit signal of the first code signal according to the first code signal to generate a first bit signal;
step 84, the wireless signal transceiver device counts the total number of high level signals of the first bit signal according to the first bit signal to generate a second total number of high level signals;
step 85, the wireless signal transceiver device counts the total number of low level signals of the first bit signal according to the first bit signal to generate a second total number of low level signals;
Step 86, the wireless signal transceiver performs ratio calculation operation on the total number of the second high levels and the total number of the second low levels to generate a second temporary high-low level ratio;
step 87, when the second temporary high-low level occupation ratio is equal to the first bit 0 occupation ratio, the wireless signal transceiver device adds 1 to the value of the first counter;
step 88, when the second temporary high-low level occupation ratio is equal to the first bit 1 occupation ratio, the wireless signal transceiver device adds 1 to the value of the second counter;
step 89, the wireless signal transceiver adds 1 to the value of the second index;
Step 90, the wireless signal transceiver determines whether the second index is greater than the second total number, if the second index is greater than the second total number, the step 91 is proceeded, and if the second index is less than or equal to the second total number, the step 83 is proceeded;
Step 91, the wireless signal transceiver generates a third counter according to the sum of the first counter and the second counter:
The third signal non-noise determination is performed successfully when the third counter equals the second total number, step 92.
here, the code signal is a series of continuous signals, and each bit signal has a specific meaning: bit 0 or bit 1. Therefore, the signal of each bit needs to be compared in high and low levels to better identify the signal's legitimacy. The specific operation is to count the number of high and low levels of each bit signal of the code signal respectively, calculate the ratio of the high and low levels by using the number of the high levels to the number of the upper and lower levels, and finally compare the ratio with the preset ratio of the high and low levels of the bit 0 signal or the high and low levels of the bit 1 signal. Here, two counters, a first counter and a second counter, are provided. The first counter is used for counting the total number of bit signals with the signal high-low level ratio characteristics consistent with the signal high-low level ratio of the bit 0 in the code signaling signal, and the second counter is used for counting the total number of bit signals with the signal high-low level ratio characteristics consistent with the signal high-low level ratio of the bit 1 in the code signaling signal, wherein the sum of the two is equal to the total number of the bit signals of the code signaling signal under the normal condition.
and 9, after the third signal non-noise judgment is successfully executed, the wireless signal transceiver performs effective signal marking operation on the first digital signal, and sends the first digital signal to a signal processing unit of the wireless signal transceiver.
In the second embodiment of the present invention, as shown in fig. 2, which is a schematic diagram of a multi-code system wireless signal muting method provided in the second embodiment of the present invention, the method includes the following steps:
step 101, a wireless signal transceiver acquires a current code system identifier from a system area of the wireless signal transceiver to generate a first identifier.
here, the current code system identifier is specifically a wireless signal encoding mode with the code number of 1527. The 1527 code digital signal logic structure is shown in fig. 4A, which is a schematic diagram of a digital signal logic structure provided by the second embodiment of the present invention, and is composed of a segment of synchronization signal and a segment of code signal. The signal length unit is a bit.
the specific length of the synchronization signal is 8 bits, each bit has no specific coding meaning, and the high-low level ratio relationship of the synchronization signal is determined by the continuous high-low level relationship among 8 continuous bit signals, as shown in fig. 4B, which is a schematic diagram of the high-low level ratio of the synchronization signal provided by the second embodiment of the present invention, the high-low level ratio relationship of the synchronization signal of 1527 codes is 1: 31.
the code signal is composed of a plurality of bit signals, and the specific coding of each bit is normalized by different high-low level ratio relations. When the coded value of the bit signal is "0", as shown in fig. 4C, which is a schematic diagram illustrating the ratio of high and low levels of the bit 0 signal provided by the second embodiment of the present invention, the ratio of high and low levels in the bit signal is 1: 3; when the coded value of the bit signal is "1", as shown in fig. 4D, which is a schematic diagram illustrating the ratio of high and low levels of the bit 1 signal provided by the second embodiment of the present invention, the ratio of high and low levels in the bit signal is 3: 1.
102, the wireless signal transceiver performs a recording polling operation on the coded squelch parameter record file stored in the system area according to the first identifier, extracts the coded squelch parameter record corresponding to the first identifier, generates a first record,
the method specifically comprises the following steps: step 1021, the wireless signal transceiver initializes the value of the first index to 1;
Step 1022, the wireless signal transceiver acquires the total number of coded squelch parameter records of the coded squelch parameter record file according to the coded squelch parameter record file, and generates a first total number;
Step 1023, the wireless signal transceiver extracts the first index code system squelch parameter record byte of the code system squelch parameter record file to generate a first polling record;
Step 1024, the wireless signal transceiver device extracts the code system identifier of the first polling record according to the first polling record to generate a first temporary identifier;
in step 1025, the wireless signal transceiving equipment determines whether the first temporary identifier is equal to the first identifier, if the first temporary identifier is equal to the first identifier, the step goes to step 1028, and if the first temporary identifier is not equal to the first identifier, the step goes to step 1026;
Step 1026, the radio signal transceiver device adds 1 to the value of the first index;
step 1027, the wireless signal transceiver determines whether the first index is greater than the first total number, if so, go to step 1028, and if not, go to step 1023;
In step 1028, the wireless signal transceiver device extracts the first polling record byte and generates a first record.
here, the purpose of polling the coded squelch parameter record file is to find 1527 code signal parameters.
step 103, the wireless signal transceiver device extracts the total length byte of the signal bit of the first record to generate a first total length, extracts the bit length byte of the synchronization signal of the first record to generate a first synchronous step length, extracts the high-low level ratio byte of the synchronization signal of the first record to generate a first synchronization ratio, extracts the high-low level ratio byte of the bit 0 signal of the first record to generate a first bit 0 ratio, extracts the high-low level ratio byte of the bit 1 signal of the first record to generate a first bit 1 ratio.
Here, the first total length is specifically the standard length of the 1527 code signal: 32 bits; the first synchronization length is specifically 1527 code synchronization signal length: 8 bits; the first synchronization ratio is specifically a ratio of high and low levels of a 1527 code synchronization signal: 1: 31; the first bit 0 ratio is specifically the high-low level ratio of the bit 0 signal of the 1527 code: 1: 3; the first bit 1 accounts for the ratio of the high-low level of the bit 0 signal of the 1527 code: 3: 1.
step 104, the wireless signal transceiver performs digital signal conversion on the received wireless signal through a signal receiving unit of the wireless signal transceiver to generate a first digital signal, where the first digital signal includes a plurality of bit signals.
here, it is assumed that a non-standard 1527 code signal is received, specifically, the length of the signal is 32 bits long, the format of the first 31 bits signal meets the 1527 code requirement, and the ratio of high level to low level of the 32 th bit signal is 2: 2.
step 105, the wireless signal transceiver performs a first signal non-noise determination operation on the first digital signal according to the first digital signal and the first total length,
The method specifically comprises the following steps: step 1051, the wireless signal transceiver device obtains the total number of bit signals of the first digital signal according to the first digital signal, and generates a first temporary total length;
in step 1052, the first signal non-noise determination is successfully performed when the first temporary total length is equal to the first total length.
here, the first temporary total length is specifically 32, and is equal to the first total length, the first signal non-noise determination is successfully performed.
step 106, after the first signal non-noise determination is successfully performed, the wireless signal transceiver performs a synchronization signal and code signal splitting operation on the first digital signal according to the first digital signal, the first total length, and the first synchronization length to generate a first synchronization signal and a first code signal, wherein the first synchronization signal includes a plurality of bit signals, the first code signal includes a plurality of bit signals,
the method specifically comprises the following steps: step 1061, the wireless signal transceiver device generates a first code length according to the difference obtained by subtracting the first synchronization length from the first total length;
step 1062, the wireless signal transceiver device generates a first code start bit according to the sum of the first synchronization length value plus 1;
Step 1063, the wireless signal transceiver device extracts a continuous bit signal with a length specifically equal to the first synchronization length from the 1 st bit signal according to the first digital signal, and generates a first synchronization signal;
step 1064, the wireless signal transceiver device extracts a continuous bit signal with a length specifically equal to the length of the first code from the bit signal corresponding to the start bit of the first code according to the first digital signal, and generates a first code signal.
Here, the first synchronization signal is specifically a first 8-bit signal of the first digital signal, and the first code signal is specifically a second 24-bit signal of the first digital signal.
Step 107, the wireless signal transceiver performs a second signal non-noise determination operation on the first synchronization signal according to the first synchronization signal and the first synchronization ratio,
the method specifically comprises the following steps: step 1071, the wireless signal transceiver device counts the total number of high level signals of the first synchronization signal according to the first synchronization signal to generate a first total number of high level signals;
step 1072, the wireless signal transceiver device counts the total number of low level signals of the first synchronization signal according to the first synchronization signal to generate a first total number of low level signals;
step 1073, the wireless signal transceiver device uses the total number of the first high level to perform a ratio calculation operation on the total number of the first low level to generate a first temporary high-low level ratio;
in step 1074, a second signal non-noise determination is performed successfully when the first temporary high-low level ratio is equal to the first synchronization ratio.
Here, the first temporary high-low level ratio is 1: 31, and is equal to the first synchronization ratio, the second signal non-noise determination is successfully performed.
Step 108, after the second signal non-noise determination is successfully performed, the wireless signal transceiver performs a third signal non-noise determination operation on the first code signal according to the first total length, the first synchronization length, the first code signal, the first bit 0 bit ratio and the first bit 1 bit ratio,
the method specifically comprises the following steps: step 1081, the wireless signal transceiver device initializes a value of the second index to 1, initializes a value of the first counter to 0, initializes a value of the second counter to 0, initializes a value of the third counter to 0:
Step 1082, the wireless signal transceiver device generates a second total number according to the difference between the first total length and the first synchronization length;
Step 1083, the wireless signal transceiver device extracts a second index bit signal of the first code signal according to the first code signal, and generates a first bit signal;
step 1084, the wireless signal transceiver device, according to the first bit signal, counts a total number of high level signals of the first bit signal to generate a second total number of high level signals;
step 1085, the wireless signal transceiver device, according to the first bit signal, counts a total number of low level signals of the first bit signal to generate a second total number of low level signals;
step 1086, the wireless signal transceiver device performs a ratio calculation operation on the total number of the second high levels to the total number of the second low levels to generate a second temporary high-low level ratio;
Step 1087, the wireless signal transceiver device increments the value of the first counter by 1 when the second temporary high-low level occupancy equals the first bit 0 occupancy;
Step 1088, the wireless signal transceiver device increments the value of the second counter by 1 when the second temporary high-low level occupancy equals the first bit 1 occupancy;
step 1089, the wireless signal transceiver device adds 1 to the value of the second index;
Step 1090, the wireless signal transceiver determines whether the second index is greater than the second total number, if the second index is greater than the second total number, go to step 1091, and if the second index is less than or equal to the second total number, go to step 1083;
step 1091, the wireless signal transceiver device generates a third counter according to the sum of the first counter and the second counter;
Here, according to the above setting, the ratio of the high level to the low level of the last bit signal of the current code signal is 2: 2, so that when the second index is specifically 32, both the first counter and the second counter fail to add 1, that is, the value of the third counter formed by adding the first counter and the second counter is smaller than the value of the second total number by 1;
step 1092, the wireless signal transceiver determines whether the third counter is equal to the second total number, if the third counter is equal to the second total number, it indicates that the third signal non-noise determination is successfully performed, and the wireless signal transceiver proceeds to step 110 to continue the subsequent operation; if the third counter is not equal to the second total number, indicating that the third non-noise signal determination has failed, the wireless signal transceiver device proceeds to step 410 to continue further operations.
here, because the third counter is not equal to the second total number, the third signal non-noise determination fails to be executed, and the process goes to step 410 to perform noise marking and exit the signal processing flow, so that the signal processing unit of the wireless signal transceiver does not receive an erroneous noise codeword, thereby avoiding generation of an error code.
In step 110, the wireless signal transceiver performs an effective signal marking operation on the first digital signal, and sends the first digital signal to a signal processing unit of the wireless signal transceiver.
In step 410, the wireless signal transceiver performs a noise signal tagging operation on the first digital signal and suspends a signal processing procedure on the first digital signal.
Here, the error generally occurs when the bit signal, which is a signal unit of the code signal, is checked for the high/low level ratio.
the invention provides a multi-code system wireless signal squelch method, which generates different bit total length, synchronous signal bit length, synchronous signal high-low level ratio, bit 0 signal high-low level ratio and bit 1 signal high-low level ratio information to preset in a code system squelch parameter recording file according to the signal structure of wireless signals under different code systems. After the wireless signal transceiving equipment completes digital signal conversion on the received wireless signal through the signal receiving unit, noise signal judgment is carried out on the digital signal by using the coded muting parameter of the coded muting parameter recording file: judging the length of the digital signal by using the total bit length corresponding to the current code system, and if the total bit length is not equal to the length of the digital signal, considering the digital signal as a noise signal; judging the synchronous signal of the digital signal by using the high-low level ratio of the synchronous signal corresponding to the current code system, and considering the digital signal as a noise signal if the high-low level ratio of the synchronous signal part in the digital signal is unequal to the high-low level ratio of the synchronous signal; and judging the code command signal of the digital signal by using the high-low level ratio of the bit 0 signal and the high-low level ratio of the bit 1 signal corresponding to the current code system, and if the high-low level ratio of a single bit signal of the code command signal part in the digital signal is not equal to the high-low level ratio of the bit 0 signal and is not equal to the high-low level ratio of the bit 1 signal, determining that the digital signal is a noise signal. The method of the invention utilizes the logic structure of the signal to carry out noise compensation judgment, not only plays a role of compensating and correcting error when the receiving unit generates error conversion, improves the effective rate of the converted signal, but also increases the function of preventing the error processing of the non-standard working code system signal.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
the above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. a method for muting a multi-code wireless signal, the method comprising:
the wireless signal transceiver acquires a current code system identifier from a system area of the wireless signal transceiver to generate a first identifier;
the wireless signal transceiver device performs recording polling operation on the coded squelch parameter record file stored in the system area according to the first identifier, extracts the coded squelch parameter record corresponding to the first identifier and generates a first record;
The wireless signal transceiver equipment extracts the total length byte of the signal bit of the first record to generate a first total length, extracts the bit length byte of the synchronous signal of the first record to generate a first synchronous step length, extracts the high-low level ratio byte of the synchronous signal of the first record to generate a first synchronous ratio, extracts the high-low level ratio byte of the bit 0 signal of the first record to generate a first bit 0 ratio, extracts the high-low level ratio byte of the bit 1 signal of the first record to generate a first bit 1 ratio:
the wireless signal transceiver device performs digital signal conversion on a received wireless signal through a signal receiving unit of the wireless signal transceiver device to generate a first digital signal, wherein the first digital signal comprises a plurality of bit signals;
The wireless signal transceiver device performs a first signal non-noise judgment operation on the first digital signal according to the first digital signal and a first total length;
After the first signal non-noise judgment is successfully executed, the wireless signal transceiver device performs a synchronization signal and code signal splitting operation on the first digital signal according to the first digital signal, a first total length and a first synchronization step size to generate a first synchronization signal and a first code signal, wherein the first synchronization signal comprises a plurality of bit signals, and the first code signal comprises a plurality of bit signals;
the wireless signal transceiver performs a second signal non-noise judgment operation on the first synchronous signal according to the first synchronous signal and the first synchronous ratio;
After the second signal non-noise judgment is successfully executed, the wireless signal transceiving equipment carries out third signal non-noise judgment operation on the first code signal according to the first total length, the first synchronization length, the first code signal, the first bit 0 ratio and the first bit 1 ratio;
after the third signal non-noise determination is successfully performed, the wireless signal transceiver device performs a valid signal tagging operation on the first digital signal and transmits the first digital signal to a signal processing unit of the wireless signal transceiver device.
2. The method of claim 1, wherein the wireless signal transceiver device obtains a current code system identifier from a system area of the wireless signal transceiver device to generate the first identifier, and wherein the method further comprises:
the wireless signal transceiver sets the coded squelch parameter record file in the system area, the coded squelch parameter record file comprises a plurality of coded squelch parameter records, and the coded squelch parameter records comprise: a code system identifier, the total length of the signal bit, the bit length of the synchronous signal, the duty ratio of high and low levels of the bit 0 signal, and the duty ratio of high and low levels of the bit 1 signal.
3. the method according to claim 2, wherein the wireless signal transceiver performs a record polling operation on a coded muting parameter record file stored in the system area according to the first identifier, extracts a coded muting parameter record corresponding to the first identifier, and generates the first record, specifically including:
step 31, the wireless signal transceiver initializes a value of a first index to 1;
step 32, the wireless signal transceiver device obtains the total number of the coded squelch parameter records of the coded squelch parameter record file according to the coded squelch parameter record file, and generates a first total number;
step 33, the wireless signal transceiver device extracts the first index code system muting parameter recording byte of the code system muting parameter recording file to generate a first polling record;
step 34, the wireless signal transceiver device extracts the code system identifier of the first polling record according to the first polling record, and generates a first temporary identifier;
Step 35, the wireless signal transceiver device determines whether the first temporary identifier is equal to the first identifier, and if the first temporary identifier is equal to the first identifier, the step 38 is performed, and if the first temporary identifier is not equal to the first identifier, the step 36 is performed;
step 36, the wireless signal transceiver adds 1 to the value of the first index;
step 37, the wireless signal transceiver determines whether the first index is greater than the first total number, and if the first index is greater than the first total number, the step 38 is proceeded to, and if the first index is less than or equal to the first total number, the step 33 is proceeded to;
step 38, the wireless signal transceiver device extracts the first polling record byte and generates the first record.
4. the method of claim 1, wherein the wireless signal transceiver device performs a first signal non-noise determination operation on the first digital signal according to the first digital signal and a first total length, and specifically comprises:
The wireless signal transceiver acquires the total number of bit signals of the first digital signal according to the first digital signal to generate a first temporary total length;
the first signal non-noise determination is performed successfully when the first temporary total length is equal to the first total length.
5. the method of claim 4, further comprising:
when the first temporary total length is not equal to the first total length, the first signal non-noise judgment fails to be executed, and the wireless signal transceiver device performs noise signal marking operation on the first digital signal and suspends a signal processing flow of the first digital signal.
6. the method of claim 1, wherein the wireless signal transceiver device performs a synchronization signal and code signal splitting operation on the first digital signal according to the first digital signal, the first total length, and the first synchronization step size to generate a first synchronization signal and a first code signal, and specifically comprises:
The wireless signal transceiver equipment generates a first code length according to the difference obtained by subtracting the first synchronization length from the first total length;
The wireless signal transceiver generates a first code starting bit according to the sum of the value of the first synchronization length and 1;
The wireless signal transceiver equipment extracts continuous bit signals with the length specifically being the first synchronization length from the 1 st bit signal according to the first digital signal to generate the first synchronization signal;
and the wireless signal transceiver equipment extracts continuous bit signals with the length specifically being the length of the first code from the bit signals corresponding to the initial bits of the first code according to the first digital signals to generate the first code signals.
7. the method of claim 1, wherein the wireless signal transceiver performs a second signal non-noise determination operation on the first synchronization signal according to the first synchronization signal and a first synchronization ratio, and specifically comprises:
the wireless signal transceiver device counts the total number of high level signals of the first synchronization signal according to the first synchronization signal to generate a first high level total number;
The wireless signal transceiver device counts the total number of low level signals of the first synchronization signal according to the first synchronization signal to generate a first total number of low level signals;
the wireless signal transceiver device uses the first high level total number to perform ratio calculation operation on the first low level total number to generate a first temporary high-low level ratio;
the second signal non-noise determination is performed successfully when the first temporary high-low level ratio is equal to the first synchronization ratio.
8. The method of claim 7, further comprising:
when the first temporary high-low level occupation ratio is not equal to the first synchronous occupation ratio, the second signal non-noise judgment fails to be executed, and the wireless signal transceiver device performs noise signal marking operation on the first digital signal and suspends the signal processing flow of the first digital signal.
9. The method of claim 1, wherein the wireless signal transceiver device performs a third signal non-noise decision operation on the first code signal according to the first total length, the first synchronization length, the first code signal, the first bit 0 bit, and the first bit 1 bit, and specifically comprises:
Step 91, the wireless signal transceiver initializes a value of the second index to 1, initializes a value of the first counter to 0, initializes a value of the second counter to 0, and initializes a value of the third counter to 0;
Step 92, the wireless signal transceiver device generates a second total number according to the difference obtained by subtracting the first synchronization length from the first total length;
step 93, the wireless signal transceiver device extracts the second index bit signal of the first code signal according to the first code signal to generate a first bit signal;
Step 94, the wireless signal transceiver device counts the total number of high level signals of the first bit signal according to the first bit signal to generate a second total number of high level signals;
step 95, the wireless signal transceiver device counts the total number of low level signals of the first bit signal according to the first bit signal to generate a second total number of low level signals;
step 96, the wireless signal transceiver device performs ratio calculation operation on the total number of the second high levels and the total number of the second low levels to generate a second temporary high-low level ratio;
Step 97, when the second temporary high-low level ratio is equal to the first bit 0 ratio, the wireless signal transceiver device adds 1 to the value of the first counter;
step 98, when the second temporary high-low level occupation ratio is equal to the first bit 1 occupation ratio, the wireless signal transceiver device adds 1 to the value of the second counter;
Step 99, the wireless signal transceiver adds 1 to the value of the second index;
step 100, the wireless signal transceiver device determines whether the second index is greater than the second total number, and if the second index is greater than the second total number, the step 101 is performed, and if the second index is less than or equal to the second total number, the step 93 is performed;
step 101, the wireless signal transceiver device generates the third counter according to the sum of the first counter and the second counter;
Step 102, when the third counter equals the second total number, the third signal non-noise determination is successfully performed.
10. the method of claim 9, further comprising:
when the third counter is not equal to the second total number, the third signal non-noise judgment fails to be executed, and the wireless signal transceiver device performs noise signal marking operation on the first digital signal and suspends the signal processing flow of the first digital signal.
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