CN104021706B - A kind of telegraphic keying signal processing system and method - Google Patents

Abstract

The invention discloses a telegraph keying signal processing system and method, belonging to the field of telegraph technology. The system includes computer, signal acquisition device and telegraph keying equipment. Described computer comprises: communication module, is used for parsing and obtains the data packet that represents the telegraph keying device button state of each road that described signal acquisition device collects; In one of the two states, the square wave of each key is output; the square wave correction module is used to eliminate the jitter of the key square wave and debounce; and the identification decoding module is used to identify the corrected square wave And obtain the code word represented by the key square wave; the display module displays each key square wave in the second buffer area and its corresponding code word on the display screen in real time. The invention better solves the relationship between the original signal and the correction number, and can comprehensively and accurately reflect the training situation of the students.

Description

A telegraph keying signal processing system and method

technical field

The invention relates to a telegraph keying signal processing system and method, belonging to the field of telegraph technology.

Background technique

Commonly used telegraph keying devices are divided into two types: hand keys and number keys. The hand keys are used to distinguish dots and strokes according to the length of the manual key press, while the number keys are automatically generated by the device according to the number pressed. interval. Hand keys are the simplest and most basic keying equipment, and hand key training is the main item in operator training. Telegraph keying equipment using hand keys in telegraph training often includes two states of "pressing the button" and "releasing" (or "lifting the key"), and its output is often a binary state of high and low levels. Usually represented by a square wave. The traditional telegraph trainer is an embedded device developed based on a single-chip microcomputer. Its data processing capability is very limited, and it is difficult to record data and fully reflect the training situation of telegraphers. Especially during the training process, the operator may have various errors or gimmicks when pressing the keys, and the keys may "can't be pressed", or "jitter". This phenomenon is often caused by the operator's personal habits or wrong technique, but in this case, it does not affect the listening and copying, because the sound change caused by the instantaneous "jitter" cannot be heard by the human ear. At the same time, in this traditional field of telegraph technology or operator trainer, due to the high acquisition frequency, conventional hardware circuits are used to eliminate jitter in order to reduce the overhead of single-chip data cache. As shown in Figure 1, the usual hardware debounce is to use hardware circuit to filter the square wave less than a certain threshold width. The width of the debounced square wave is smaller than the actual square wave width, but it is often only " "Instant" width loss, this method can also effectively eliminate the influence of "jitter", and it is also in line with the daily habit of listening to and copying, but there are situations where it cannot reflect the mistakes or irregularities in the operator's training process.

In the traditional telegraph trainer, the recognition method based on the reference point of conventional decoding is often used. This method compares the square wave sequence of the collected button state with the pre-agreed reference point according to the rules of Morse code. , and then the square wave sequence is divided into dots and dashes, and then according to the combination of "dots" and "dashes", the corresponding codewords are obtained by looking up the table in the coding table. This traditional method has the problem of poor self-adaptability. In order to improve the self-adaptive ability, such as adopting the signal recognition method described in CN103414663.A "Adaptive Recognition Method of Morse Signal Based on Backtracking Method" for decoding, then there is a problem of not performing "debounce" processing on the signal. In some cases, it will affect the identification of the signal, and in severe cases it will lead to wrong decoding. Not only in the hand keys, but also in the keying equipment using digital keys, the interference of electrical signals or the circuit or program that generates dot and dash signals may also cause jitter, and there is also the problem of "debounce".

Contents of the invention

The technical problem to be solved by the present invention is to provide a telegraph keying signal processing system and method to realize real-time and comprehensive monitoring of operator training.

The technical solution of the present invention is: a telegraph keying signal processing system, including a communication-connected computer, a signal acquisition device and a telegraph keying device, the signal acquisition device samples the telegraph of each line number connected to it according to the set acquisition frequency The button state of the key control device, the button state is a switch value, "0" is used to represent the first state and "1" is used to represent the second state, and the first state and the second state are opposite to each other. After the After the signal acquisition device collects, packs and processes, it is forwarded to the computer, and the computer includes:

The communication module is used for communicating with the signal acquisition device, analyzing and obtaining the data packets collected by the signal acquisition device representing the key state of each telegraph keying device;

The square wave counting module is used to count the continuous number of a certain state in the two states of each line number in the data packet, and divide it by the acquisition frequency to output a multiple of the unit time to represent a square wave of each key, And the square wave of each button is cached in the first buffer area in the form of a digital sequence that alternates between positive and negative. The positive and negative represent two different states of the square wave of the key, and the absolute value represents the width of the square wave, that is, the state duration of

The square wave correction module is used to eliminate the jitter of each key square wave in the first buffer area and cache the de-jittered key square wave in the second buffer area;

The identification decoding module is used to identify and obtain the codeword represented by each key square wave in the second buffer area according to each key square wave;

The display module is used to display each key square wave in the second buffer area and its corresponding code word on the display screen in real time.

The square wave correction module includes: a debounce sub-module, which is used to judge each square wave in the first buffer area, and if the width of the square wave is less than a preset threshold, its state is reversed and its state before and after Merging, buffering the square wave after eliminating the jitter in the second buffer area, and marking its jitter position; the buffer submodule is used to judge the square wave newly received in the first buffer area corresponding to the line number and the previous jitter Whether the width of the square wave of buttons with the same wave signal state is greater than the specified threshold, if it is greater than the specified threshold, the button square wave after debounce is buffered in the second buffer area, otherwise continue to wait and debounce.

The identification decoding module includes: a judging submodule, which is used to judge whether the number of square waves of each key in the second buffer area cache is greater than or equal to the number of layers of the coding tree before identification, and if so, call the signal identification submodule to identify , decoding, otherwise continue to wait; the identification sub-module is used to identify the square wave signal using the Morse signal identification method based on the backtracking method and outputs the codeword represented by the identified square wave signal; the removal sub-module is used to convert the signal The identification sub-module identifies and decodes each key square wave and removes it from the second buffer area.

The unit time is milliseconds (ms); the specified threshold ranges from 5ms to 10ms.

The computer also includes a square wave storage module, which is used to periodically store the square wave of each button received in the first buffer area in a non-volatile storage device.

A kind of telegraph keying signal processing method, firstly provide the computer, signal acquisition device and telegraph keying equipment connected in sequence, comprising the following steps:

S1. The computer communicates with the signal acquisition device, analyzes and obtains the data packets collected by the signal acquisition device representing the button status of each telegraph keying device.

S2. After receiving the data packet, the computer further counts the continuous number of a certain state in the two states of each line number in the data packet, and divides it by the acquisition frequency to output the multiple of the unit time to represent one of each key. square wave, and cache the square wave of each button in the first buffer area in the form of positive and negative alternating digital sequences, using positive and negative to represent two different states of the key square wave, and the absolute value represents the width of the square wave, That is, the duration of the state.

S3. The computer eliminates the jitter of each button square wave in the first buffer area and caches the de-bounced button square wave in the second buffer area.

S4. The computer recognizes each button square wave in the second buffer area and obtains the codeword represented by each button square wave.

S5. The computer displays the square wave of each button in the second buffer area and its corresponding code word on the display screen in real time.

Described step S3 comprises:

S31. Judging each square wave in the first buffer area, if the width of the square wave is smaller than the preset threshold value, its state is reversed and its state before and after is merged, and the square wave after eliminating jitter is buffered in the second In the buffer area, and mark its jitter position; S32, determine whether the square wave width of the key that is newly received in the first buffer area corresponding to the line number and the same state as the previous jittering square wave signal is greater than the specified threshold, if greater than the specified Threshold, then cache the button square wave after debounce to the second buffer area, otherwise continue to wait and debounce.

Described step S4 comprises:

S41, judging whether the number of square waves of each button in the second cache area is greater than or equal to the number of layers of the coding tree, if so, then identify and decode, otherwise continue to wait; S42, adopt the Morse signal identification based on the backtracking method The method identifies the square wave signal and outputs the codeword represented by the identified square wave signal; S43. Remove the identified and decoded square wave signal of each key from the second buffer area.

The unit time is milliseconds (ms); the specified threshold ranges from 5ms to 10ms.

The computer periodically stores the square wave of each button received in the first buffer area in the non-volatile storage device.

The beneficial effects of the present invention are: a double buffer structure is adopted to process the telegraph keying signal, which better solves the relationship between the original signal and the correction number, and can comprehensively and accurately reflect the training situation of the students; Alternately appearing digital sequences represent each button square wave, which simplifies the square wave data structure and improves the system's processing capability and performance; on the basis of the method of time-length quantization for the button square wave, it adopts merging instead of the conventional discarding method Eliminate jitter, and mark the jitter, which further reflects the actual training situation of the operator in a more detailed and accurate manner.

Description of drawings

Fig. 1 is the schematic diagram that eliminates the jitter of the square wave of telegraph keying device button;

Fig. 2 is the hardware architecture diagram of the preferred embodiment of the telegraph keying signal processing system of the present invention;

Fig. 3 is the functional structural block diagram of the computer of telegraph keying signal processing system preferred embodiment of the present invention;

Fig. 4 is the structural block diagram of the square wave correction module of preferred embodiment of telegraph keying signal processing system of the present invention;

Fig. 5 is the structural block diagram of the identification decoding module of the preferred embodiment of the telegraph keying signal processing system of the present invention;

Fig. 6 is the schematic diagram of debounce and screen display of the preferred embodiment of telegraph keying signal processing system of the present invention;

Fig. 7 is a flow chart of a preferred embodiment of the telegraph keying signal processing method of the present invention;

Fig. 8 is a flow chart of eliminating jitter in a preferred embodiment of the telegraph keying signal processing method of the present invention;

Fig. 9 is a flow chart of identification and decoding of a preferred embodiment of the telegraph keying signal processing method of the present invention;

In the figure: 1-computer; 2-signal acquisition device; 3-telegraph keying equipment; 11-communication module; 12-square wave counting module; 13-square wave correction module; 14-identification decoding module; 15-display module; 16-Square wave storage module; 131-Debounce sub-module; 132-Cache sub-module; 141-Judgement sub-module; 142-Identification sub-module; 143-Remove sub-module; 21-Communication unit; 22-Key signal acquisition unit.

detailed description

The present invention will be further described below in combination with the accompanying drawings and specific embodiments.

As shown in FIG. 2 , it is a hardware architecture diagram of a telegraph keying signal processing system in a preferred embodiment of the present invention, including a computer 1 , a signal acquisition device 2 and a telegraph keying device 3 . Wherein, the signal acquisition device 2 further includes a communication unit 21 and a key signal acquisition unit 22 . The keying signal acquisition unit 22 of the signal acquisition device 2 samples the key state of the telegraph keying equipment of each line number connected to it according to the set acquisition frequency. The key state is a switching value, and "0" represents the first The state and "1" represent the second state, the first state and the second state are mutually opposite states, after being collected by the key signal acquisition unit 22 of the signal acquisition device, after being packaged and processed by the communication unit 21, it is forwarded to computer1. Wherein, the communication unit 21 is composed of an Ethernet chip and related circuits, and communicates with the computer 1 through the Ethernet.

The usual telegraph keying device 3 includes two opposite states of "pressing the button" and "lifting the key" or "pressing" and "releasing". In actual work, the output of the telegraph keying device 3 is a switching value, namely High level and low level, the high level can be represented by "1", and the low level can be represented by "0", of course, the reverse is also possible. In the actual training process, this kind of button device may produce "jitter", which is often caused by the student's "unable to press" or the interference in the electronic device. Instantaneous jump, as shown in Figure 1.

Since the output of the usual telegraph keying device 3 is a switch value, using this characteristic to store and represent a keying signal with "bit" can greatly improve the efficiency of storage and the communication capability of the system. In this embodiment, the communication between the keying signal acquisition unit 22 and the telegraph keying device 3 adopts the UART mode, that is, the serial port mode. The line numbering is the numbering connected with the keying signal acquisition unit 22 according to the pin number of the I/O interface chip connected with the telegraph keying device 3, and in the present embodiment, the signal collecting device 2 is connected to the telegraph keying device of No. 72 3. If 1 bit represents 1 channel, it is assembled into bytes according to the line number bit by bit, then a 9-byte keying signal data packet is obtained, and a 1-byte check code is added, and the entire keying signal data packet is 10 bytes. That is to say, in this embodiment, bits and their storage sequence numbers are used to collect and store signals and line numbers, and then data is compressed to improve communication capabilities.

The above is the hardware environment of the preferred embodiment of the present invention. Next, the functional structure of the computer 1 of the telegraph keying signal processing system provided by the embodiment of the present invention will be described in detail.

As shown in Fig. 3, be the functional structural block diagram of the computer of telegraph keying signal processing system of preferred embodiment of the present invention, described computer 1 comprises:

The communication module 11 is used for communicating with the signal acquisition device, analyzing and obtaining the data packets collected by the signal acquisition device representing the button state of each telegraph keying device.

In this embodiment, the computer 1 and the signal acquisition device 2 can communicate through the TCP/IP protocol or the UDP/IP protocol, and analyze and obtain the data packet of the key signal transmitted by the key signal acquisition device 2 .

The square wave counting module 12 is used to count the continuous number of a certain state in the two states of each line number in the data packet, and divide by the multiple of the output unit time after the collection frequency to represent a square wave of each road button , and cache the square wave of each button in the first buffer area in the form of a digital sequence that alternates between positive and negative. The positive and negative represent two different states of the square wave of the key, and the absolute value represents the width of the square wave, that is, the The duration of the state.

In this embodiment, the unit time is milliseconds (ms).

Usual units can be microseconds (us), milliseconds (ms) and seconds (s). In this embodiment, milliseconds (ms) is used as a unified unit for measuring square waves, which can be more convenient and truly reflect the staff training.

In this embodiment, what is collected in the data packet of the keying signal is the sampling value of the binary state (high or low level) of each telegraph keying device at a certain collection time point. In this embodiment, a positive number represents a "key", that is, a high level, and a negative number represents a "interval", that is, a low level. The original square wave signal is restored by counting and accumulating, and the restored square wave signal is buffered in the first buffer area in the form of a digital sequence, which is a quantized representation of the square wave signal. For example: (57, -58, 58, -58, 173, -174, 56, -57, 173, -291, 171), where 57 means the key press duration is 57ms, and -58 means the interval duration is 58ms. That is to say, positive and negative represent high level or low level, and its absolute value represents the width of the square wave, that is, the duration of the state. In the digital sequence, positive and negative always appear alternately. If it is a 72-way keying device, there are 72 square wave digital sequences in the first buffer area.

The square wave correction module 13 is used to eliminate the jitter of each key square wave in the first buffer area and store the de-jittered key square wave in the second buffer area.

In this embodiment, in order to avoid that the original key square wave signal in the first buffer area may have jitters that may cause identification and decoding errors, the key square wave signal in the first buffer area is corrected, and each key after correction The square wave signal is buffered in the second buffer area, and the modified square wave signal in the second buffer area is identified and decoded.

The identification and decoding module 14 is configured to identify each key square wave in the second buffer area and obtain the codeword represented by each key square wave.

The display module 15 is used to display the square wave of each button in the second buffer area and its corresponding code word on the display screen in real time.

The square wave storage module 16 is used to periodically store the square wave of each key received in the first buffer area in a non-volatile storage device.

In this embodiment, saving the quantized square wave signal in the first buffer area in real time can reduce the storage space compared with saving the original received key square wave signal data packet, and at the same time, compared with the method of saving the second buffer area The wave signal can record the training situation of the operator without distortion. The non-volatile storage devices in the computer include hard disks, solid-state hard disks, and U disks, etc., which will be convenient for users to inquire after training.

As shown in Figure 4, the square wave correction module 13 further includes:

The debounce sub-module 131 is used to judge each square wave in the first buffer area. If the width of the square wave is less than a preset threshold, its state is reversed and its front and rear states are merged, and the jitter is eliminated. The square wave is buffered in the second buffer area and its dither position is marked.

In this embodiment, the specified threshold value ranges from 5 ms to 10 ms.

A large amount of experimental data shows that the jitter generated by manual keys is often between 1 and 10ms. Therefore, it is necessary to set the minimum threshold for judging the jitter square wave according to the actual training requirements.

The square wave states are reversed and merged. In the alternating positive and negative square wave digital sequence, the positive and negative of the jittered number or the negative and positive are performed, and the number and its adjacent two numbers are added. In this embodiment, according to the characteristic that the jitter is "generating an instantaneous jump opposite to the current state", the minimum threshold for setting the width of a normal square wave is adopted, such as 5 ms. When the absolute value of the duration of a certain square wave is judged ( That is, the width) is less than or equal to 5ms, indicating that jitter has occurred at this place. Further, according to the characteristics of the jitter, it is necessary to invert the jittered square wave signal, and then combine the three square wave signals with the adjacent square wave signals. . Of course, a simple method can be to discard the square wave signals smaller than a certain threshold, and only combine the two adjacent square wave signals, but this method reflects that there may be errors in the operator's key press time. For example, for the digital sequence: (55, -57, 33, -3, 20, -58), the absolute value of -3 is 3ms, that is, the square wave width of 3ms is less than 5ms, resulting in jitter, after inverting it , to merge (add) before and after to get a new sequence of numbers (55, -57, 56, -58).

Buffering submodule 132, is used for judging whether the square wave width of the key that is newly received in the first buffering area corresponding to the line number and the same state as the last jittering square wave signal is greater than a specified threshold, and if it is greater than a specified threshold, it will be eliminated. The shaken key square wave is cached in the second buffer area, otherwise, continue to wait and debounce.

Under normal circumstances, the jitter generated by manual keys may be continuous. If only one jitter is eliminated and it is cached in the second buffer area, it may cause recognition and decoding errors. Therefore, it is necessary to wait for new The signal of the normal button is a square wave and then buffered into the second buffer area, which can further reduce the error. For example: (55, -57, 10, -3, 20) has jitter at -3, and after de-jittering: (55, -57, 33), if the newly received party in the first buffer area at this time The wave is "-1, 20", and the width of "-1" is smaller than the threshold, which means it is still shaking, so the square wave sequence cannot be cached in the second buffer area, and it is necessary to continue to wait and debounce, then after further debounce Get (55, -57, 54). When "-50" is received again, its state is the same as the state of "-3" at the start of shaking and is greater than the specified threshold of 5ms, indicating that there is no more shaking. Therefore, the shaking will be obtained The digital sequence (55, -57, 54, -50) of the square wave is buffered into the second buffer area.

As shown in Figure 5, the identification decoding module 14 further includes:

Judgment sub-module 141, is used for judging whether the square wave number of each way key of the second cache area cache is greater than or equal to the number of layers of coding tree before identification, if so, then call signal identification sub-module to identify, decode, otherwise continue to wait .

In this embodiment, a "Morse signal adaptive recognition method based on the backtracking method" described in the patent publication No. CN103414663.A is used for recognition and decoding. This method has strong self-adaptability and Efficient decoding capability, suitable for real-time decoding equipment. With this method, it is necessary to judge whether the number of signals in the second buffer area satisfies the number of layers of the coding tree, and then perform decoding. For the number of long codes, if the number in the second buffer area is less than the number of layers of the coded number, then it is impossible to decode correctly. Of course, this backtracking method can still be used to decode, but it will only lead to wasteful consumption of processor resources. The short code tree may be correctly decoded, but in order to improve the probability of successful decoding, as a preferred solution, it is necessary to wait for the number of square waves in the buffer area to be not less than the number of layers of the number of codes before identifying and decoding.

The identification sub-module 142 is configured to identify the square wave signal by using the Morse signal identification method based on the backtracking method and output the codeword represented by the identified square wave signal.

The removal sub-module 143 is configured to remove each key square wave identified and decoded by the signal identification sub-module from the second buffer area.

The correctly decoded key square wave signal is removed from the second buffer area, which helps to reduce system overhead.

Next, a typical application example of the present invention is further described. As shown in FIG. 6 , it is a schematic diagram of the debounce and screen display of the embodiment of the present invention, which reflects the whole process of debounce and decoding the signal by using the operator training system of the present invention. In this practice, the acquisition frequency is 1ms, and the "key" is a positive number when the high level is used, and the "lift key" or "interval" is a negative number when the low level is used. The signal acquisition device 2 collects the signal and transmits it to the computer 1. After the communication module 11 of the computer 1 receives the data packet, after counting and processing by the square wave counting module 12, the digital sequence of a certain keying signal in the first buffer area is obtained, 136 It means that the duration of pressing the key is 136 milliseconds, -71 means that the duration of "interval" or "key lifting" is 71 milliseconds, and so on. According to the preset threshold, 5ms, it means that there is a jitter at the "-1" of "40, -1, 1", and -1 means that the interval is 1ms (judged by taking the absolute value in computer 1) , its 1 ms is less than the specified threshold 5 ms, so it is judged that there is jitter at this place, and after it is de-jittered by the square wave correction module 13, the de-jittered square wave digital sequence of the second buffer area as shown in Figure 6 is obtained, and then It is decoded by the identification decoding module 14 and displayed on the display screen by the display module 15. The display module 15 further utilizes a digital method to visually represent the square wave, and displays a positive number, that is, a high level (key press duration) at the top, and displays a low level (interval time) at the bottom after taking an absolute value. The square wave number sequence "136 -71 53 -64 53 -76 42 -80 135 -239" in the second buffer area is analyzed by the identification decoding module 14 to obtain the start symbol "<", while the square wave number sequence "155 -66 64-76 51 -60 58 -70 108 -303" is parsed as "6", and the square wave number sequence "37 210 156 -266" is parsed as "1". The parsed code word "<61" is displayed in the lower right corner of the display.

Next, the workflow of the telegraph keying signal processing method provided by the embodiment of the present invention will be described.

As shown in Figure 7, it is a flow chart of a preferred embodiment of the telegraph keying signal processing method of the present invention, at first providing sequentially connected computer 1, signal acquisition device 2 and telegraph keying device 3, comprising the following steps:

S1. The computer 1 communicates with the signal acquisition device 2, analyzes and obtains the data packets collected by the signal acquisition device 2 representing the button state of the telegraph keying device 3 of each channel.

In this embodiment, the computer 1 and the signal acquisition device 2 can communicate through the TCP/IP protocol or the UDP/IP protocol, and analyze and obtain the data packet of the key signal transmitted by the key signal acquisition device 2 .

In this embodiment, what is collected in the data packet of the keying signal is the sampling value of the binary state (high or low level) of each telegraph keying device at a certain collection time point, and a positive number means that the "key" is also It is a high level, and a negative number means that the "interval" is a low level.

S2, after receiving the data packet, the computer 1 further counts the continuous number of a certain state in the two states of each line number in the data packet, and divides it by the acquisition frequency and then outputs the multiple of the unit time to represent the number of each button A square wave, and the square wave of each key is cached in the first buffer area in the form of a positive and negative digital sequence. The positive and negative represent the two different states of the key square wave, and the absolute value represents the width of the square wave , which is the duration of the state.

In this embodiment, the unit of time is milliseconds (ms);

S3. The computer 1 eliminates the jitter of each button square wave in the first buffer area and buffers the de-bounced button square wave in the second buffer area.

S4. The computer 1 identifies each key square wave in the second buffer area and obtains the codeword represented by each key square wave.

S5. The computer 1 displays the square wave of each button in the second buffer area and its corresponding code word on the display screen in real time.

S6. The computer 1 periodically stores the square wave of each button received in the first buffer area in the non-volatile storage device.

As shown in Figure 8, it is a work flow chart of eliminating the jitter step S3 in the telegraph keying signal processing method of the present embodiment, including:

S31. Judging each square wave in the first buffer area, if the width of the square wave is smaller than the preset threshold value, its state is reversed and its state before and after is merged, and the square wave after eliminating jitter is buffered in the second cache area and mark its jitter location.

S32. Judging whether the newly received key square wave width in the first buffer area corresponding to the line number is greater than the specified threshold value, if it is greater than the specified threshold value, the key square wave width after the vibration will be eliminated. Wave cache to the second buffer area, otherwise continue to wait and debounce.

In this embodiment, the specified threshold value ranges from 5 ms to 10 ms.

As shown in Figure 9, it is the work flow diagram of identifying and decoding step S4 in the telegraph keying signal processing method of the present embodiment, including:

S41. Determine whether the number of square waves of each button in the second buffer area is greater than or equal to the number of layers of the coding tree, if so, perform identification and decoding, otherwise continue to wait.

S42. Using the Morse signal identification method based on the backtracking method to identify the square wave signal and output the codeword represented by the identified square wave signal.

S43. Remove the identified and decoded square wave signal of each key from the second buffer area.

The specific implementation of the present invention has been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned implementation, within the knowledge of those of ordinary skill in the art, it can also be made without departing from the gist of the present invention. Variations.

Claims (10)

1. a telegraphic keying signal processing system, computer, signal pickup assembly and telegraphic keying equipment including communication connection, signal pickup assembly is sampled the key-press status of the telegraphic keying equipment of connected each circuit number by the frequency acquisition set, described key-press status is switching value, represent that the first state and " 1 " represent the second state with " 0 " respectively, described first state and the second state inverse state each other, through described signal pickup assembly collection, pack and process after be transmitted to computer, it is characterised in that: described computer includes:

Communication module, for communicating with signal pickup assembly, resolves and obtains the packet of the telegraphic keying device keys state on each road of representative that described signal pickup assembly gathers；

Square wave counting module, the lasting number of a certain state in the two states of each circuit number in statistical data packet, and divided by the multiple of output unit time after frequency acquisition to represent a square wave of each road button, and the square wave of each road button is buffered in the first buffer zone with the form of the positive and negative Serial No. being alternately present, by two different states of positive negative indication button square wave, the duration of absolute value representation key-press status；

Square wave correcting module, is used for the button square wave after eliminating the shake of each road button square wave in the first buffer zone and trembling disappearing and is buffered in the second buffer zone；

Identify decoder module, for being identified according to each road button square wave in the second buffer zone and obtaining the code word representated by the button square wave of each road；

Display module, for by display on a display screen real-time to each road button square wave of the second buffer zone and the code word of correspondence thereof.

Telegraphic keying signal processing system the most according to claim 1, it is characterised in that: described square wave correcting module includes:

Disappear and tremble submodule, for each road square wave in the first buffer zone is judged, if the width of square wave less than threshold value set in advance, then its state is negated with its before and after status merging, square wave after eliminating shake is buffered in the second buffer zone, and its dither positions of labelling；

Cache sub-module, for being newly received in the first buffer zone of judging that corresponding line numbers with on the identical button square width of the square-wave signal state of a shake whether more than specifying threshold value, if greater than specifying threshold value, button square wave after then eliminating shake is cached to the second buffer zone, otherwise continues waiting for and disappear trembling.

Telegraphic keying signal processing system the most according to claim 1, it is characterised in that: described identification decoder module includes:

Judging submodule, for judging before identification whether each road button square wave number of the second buffer zone caching is more than or equal to the number of plies of code tree, the most then call signal identification submodule is identified, decodes, and otherwise continues waiting for；

Identify submodule, for using Morse signal recognition methods identification square-wave signal based on backtracking method and exporting the code word that identified square-wave signal represents；

Remove submodule, for signal identification submodule identification, decoded each road button square wave being removed from the second buffer zone.

Telegraphic keying signal processing system the most according to claim 1 and 2, it is characterised in that: the described unit interval is millisecond (ms)；Described appointment threshold value span is 5ms ~ 10ms.

Telegraphic keying signal processing system the most according to claim 1, it is characterised in that: described computer also includes square wave memory module, for being regularly stored in non-volatile memory apparatus by the square wave of each road button received in the first buffer zone.

6. a telegraphic keying signal processing method, first provides computer, signal pickup assembly and the telegraphic keying equipment being sequentially connected with, it is characterised in that comprise the steps:

S1, computer communicate with signal pickup assembly, resolve and obtain the packet of the telegraphic keying device keys state on each road of representative that described signal pickup assembly gathers；

S2, receive packet after, the lasting number of a certain state in the two states of each circuit number in the further statistical data packet of computer, and divided by the multiple of output unit time after frequency acquisition to represent a square wave of each road button, and the square wave of each road button is buffered in the first buffer zone with the form of the positive and negative Serial No. being alternately present, by two different states of positive negative indication button square wave, the duration of absolute value representation key-press status；

Button square wave after S3, computer eliminate the shake of each road button square wave in the first buffer zone and tremble disappearing is buffered in the second buffer zone；

S4, computer are identified according to each road button square wave in the second buffer zone and obtain the code word representated by the button square wave of each road；

S5, computer real-time by display on a display screen real-time to each road button square wave of the second buffer zone and the code word of correspondence thereof.

Telegraphic keying signal processing method the most according to claim 6, it is characterised in that: described step S3 includes:

S31, each road square wave in the first buffer zone is judged, if the width of square wave is less than threshold value set in advance, then its state is negated with its before and after status merging, the square wave after eliminating shake is buffered in the second buffer zone, and its dither positions of labelling；

S32, judge that corresponding line numbers be newly received in the first buffer zone with on the identical button square width of the square-wave signal state of a shake whether more than specifying threshold value, if greater than specifying threshold value, button square wave after then eliminating shake is cached to the second buffer zone, otherwise continues waiting for and disappear trembling.

Telegraphic keying signal processing method the most according to claim 6, it is characterised in that: described step S4 includes:

S41, judge that each road button square wave number of the second buffer zone caching whether more than or equal to the number of plies of code tree, is the most then identified, decodes, otherwise continue waiting for；

S42, employing Morse signal recognition methods identification square-wave signal based on backtracking method also export the code word that identified square-wave signal represents；

S43, by identifying, decoded each road button square-wave signal removes from the second buffer zone.

9. according to the telegraphic keying signal processing method described in claim 6 or 7, it is characterised in that: the described unit interval is millisecond (ms)；Described appointment threshold value span is 5ms ~ 10ms.

Telegraphic keying signal processing method the most according to claim 6, it is characterised in that: the square wave of each road button received in the first buffer zone is regularly stored in non-volatile memory apparatus by described computer.