CN101430545A - Remote voice control system and method used for engineering machinery - Google Patents
Remote voice control system and method used for engineering machinery Download PDFInfo
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- CN101430545A CN101430545A CNA2008101857172A CN200810185717A CN101430545A CN 101430545 A CN101430545 A CN 101430545A CN A2008101857172 A CNA2008101857172 A CN A2008101857172A CN 200810185717 A CN200810185717 A CN 200810185717A CN 101430545 A CN101430545 A CN 101430545A
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Abstract
The invention discloses a remote speech control system used in a construction machinery. The system is connected with a master controller of the construction machinery. The system comprises a speech reception device which receives speech signals and converts the received speech signals into analog electrical signals; a wireless signal transmitter installation transmits the analog electrical signals to a wireless signal reception device at the far end which converts the analog electrical signals into digital signals; a speech recognition device searches speech simulation signals corresponding to the digital signals in a built-in database; a control command reforming unit searches and transmits control commands corresponding to the speech imitation signals to the master controller of the construction machinery. The invention also discloses a remote speech control method used in the construction machinery. The remote speech control system and the method thereof are used for realizing the speech control on the construction machinery.
Description
Technical field
The present invention relates to the control field, particularly relate to a kind of remote voice control system and method that is used for engineering machinery.
Background technology
In the large-scale engineering machinery field, when the engineering machinery of mechanical arm that more piece jib or bending structure are installed etc. is controlled,, generally all adopt wireless remote controller in order to guarantee operator's safety, operating personnel are controlled away from car body.For example, the control concrete pump truck arm launches or draws in, and the control crane arm moves etc.
With reference to Fig. 1, be the described wireless remote controller structural drawing of prior art.
Described wireless remote controller comprises: comprise control knob and joystick Digiplex 1a, be installed in receiver 1b, motor vehicles and machines controller 1c and driving mechanism 1d on the motor vehicles and machines.
Operating personnel are by control knob or the joystick of the described Digiplex 1a of operation, and transmit operation is instructed to described receiver 1b.
Described receiver 1b handles the described operational order that receives, and is transmitted to described motor vehicles and machines controller 1c.
Described motor vehicles and machines controller 1c sends control corresponding and instructs to described drives structure 1d according to the described operational order that receives.
Described driving mechanism 1d drives electric hydraulic control valve according to the steering order that receives, and controls described motor vehicles and machines action.
Wireless remote controller described in the prior art can only be by control knob or joystick transmit operation instruction, and its control model is more single.
Simultaneously, the described wireless remote controller of prior art, the scope of its wireless remote control is also very limited.General its remote range can only be within 200 meters scopes of the described receiver of distance.But for large-scale construction project, adopt described wireless remote controller, can not effectively guarantee operating personnel's personal safety.
Summary of the invention
Technical matters to be solved by this invention provides a kind of remote voice control system and control method that is used for engineering machinery, realizes by the Long-distance Control of voice to engineering machinery.
For solving the problems of the technologies described above, the invention provides a kind of remote voice control system that is used for engineering machinery, described system links to each other with the master controller of engineering machinery; Described system comprises pronunciation receiver, wireless signal dispensing device, wireless signal receiving trap, speech recognition equipment, steering order reforming unit:
Described pronunciation receiver received speech signal is converted to analog electrical signal with the voice signal that receives, and sends to described wireless signal dispensing device;
Described wireless signal dispensing device sends to described analog electrical signal the described wireless signal receiving trap of far-end;
Described wireless signal receiving trap is converted to digital signal with the analog electrical signal that receives, and sends to described speech recognition equipment;
Described speech recognition equipment is searched the voice analog signal corresponding with described digital signal in internal database, voice analog signal is sent to described steering order reforming unit;
Described steering order reforming unit is searched described voice analog signal control instruction corresponding, sends to the master controller of engineering machinery.
Preferably, described remote voice control system also comprises voice signal feedback assembly, voice signal judgment means, reaches forbidden device:
Described voice signal feedback assembly extracts voice analog signal from described speech recognition equipment, sends to described voice signal judgment means;
Described voice signal judgment means judges whether described voice signal is corresponding with the voice signal that described pronunciation receiver receives, and as not, returns out code to described forbidden device;
Described forbidden device is closed described steering order reforming unit.
Preferably, described speech recognition equipment comprises: feature extraction unit, characteristic matching unit and database;
Described feature extraction unit is extracted the phonetic feature of the digital signal that receives, and sends to described characteristic matching unit;
The voice analog signal that is complementary with described phonetic feature is searched in described characteristic matching unit in internal database, be sent to described steering order reforming unit.
Preferably, described remote voice control system also comprises the database update device, and described database update device receives update instruction, upgrades the database in the described speech recognition equipment.
Preferably, described database update device comprises: a voice-input unit, feature extraction unit, secondary voice-input unit, secondary feature extraction unit, similarity comparing unit and an associating information unit;
A described voice-input unit, input speech signal is converted into first analog electrical signal, is sent to a described feature extraction unit;
A described feature extraction unit is extracted the phonetic feature of described first analog electrical signal, is sent to described similarity comparing unit;
Described secondary voice-input unit is imported the voice signal that a described voice-input unit is imported once more, is converted into second analog electrical signal, is sent to described secondary feature extraction unit;
Described secondary feature extraction unit is extracted the phonetic feature of described second analog electrical signal, is sent to described similarity comparing unit;
Described similarity comparing unit, the similarity of the phonetic feature of the phonetic feature of more described first analog electrical signal and described second analog electrical signal, when the similarity of the two is higher than predetermined threshold value, described voice signal and phonetic feature are sent to described associating information unit;
The related information between described voice signal and the described phonetic feature is set up in described associating information unit, is stored in the database.
Preferably, described remote voice control system also comprises the communication signal receiving trap;
Described communication signal receiving trap receives the voice signal that communication apparatus sends, and is converted into analog electrical signal, is sent to described speech recognition equipment.
Preferably, described remote voice control system also comprises the proof of identity device; Described proof of identity device links to each other with described communication signal receiving trap, is used for described communication apparatus is carried out proof of identity.
The present invention also provides a kind of remote speech control method that is used for engineering machinery, and described method comprises:
Steps A: received speech signal, be converted into analog electrical signal, send with the wireless signal form.
Step B: receive described analog electrical signal, be converted to digital signal;
Step C: search database, obtain the voice analog signal corresponding with described digital signal;
Step D: obtain and described voice analog signal control instruction corresponding, be sent to the master controller of engineering machinery.
Preferably, after the step C, further comprise before the step D:
Judge whether the voice signal that receives in described voice analog signal and the steps A is corresponding, if, enter step D, if not, return steps A, wait for new voice signal.
Preferably, adopt following step to obtain the voice analog signal corresponding with described digital signal:
Extract the phonetic feature of described digital signal;
Search database, obtain the voice analog signal that is complementary with described phonetic feature.
Preferably, described method further comprises: receive update instruction, more new database.
Preferably, adopt more new database of following step:
Input speech signal is converted into first analog electrical signal;
Extract the phonetic feature of described first analog electrical signal;
Import described voice signal once more, be converted into second analog electrical signal;
Extract the phonetic feature of described second analog electrical signal;
The similarity of the phonetic feature of the phonetic feature of more described first analog electrical signal and described second analog electrical signal, when the similarity of the two is higher than predetermined threshold value, related described voice signal and phonetic feature;
Related information with described voice signal and phonetic feature stores database into.
Preferably, before the described received speech signal of steps A, further comprise: described voice signal is carried out proof of identity.
Compared with prior art, the present invention has the following advantages:
The remote voice control system that is used for engineering machinery of the present invention comprises pronunciation receiver, can received speech signal, be converted into analog electrical signal, and send to the wireless signal receiving element that is arranged on far-end by the wireless signal transmitting element.After described wireless signal receiving element receives described analog electrical signal, be converted into digital signal and be sent to speech recognition equipment.Described speech recognition equipment is searched the speech simulation information corresponding with this digital signal in internal database.Described steering order reforming unit is searched and this voice analog signal control instruction corresponding, sends to the master controller of engineering machinery, controls described engineering machinery action.
Adopt remote voice control system of the present invention and control method, except passing through control knob or the described mechanical engineering of joystick Long-distance Control, can also realize the variation of engineering machinery vehicle control model by the Long-distance Control of voice realization to engineering machinery.
Simultaneously, remote voice control system of the present invention and control method can also realize by the Long-distance Control of communication apparatus such as phone or mobile phone to engineering machinery.As long as in the coverage of communication network, all can realize control to engineering machinery.Compared with prior art, remote speech telechiric device of the present invention has increased the distance between operator and the engineering machinery greatly, can realize Remote truly, effectively guarantees operator's personal safety.
Description of drawings
Fig. 1 is the described wireless remote controller structural drawing of prior art;
Fig. 2 is the described remote voice control system structural drawing that is used for engineering machinery of first embodiment of the invention;
Fig. 3 is a speech recognition equipment structural drawing of the present invention;
Fig. 4 is the described remote voice control system structural drawing that is used for engineering machinery of second embodiment of the invention;
Fig. 5 is the described remote speech control method process flow diagram that is used for engineering machinery of first embodiment of the invention;
Fig. 6 is the described remote speech control method process flow diagram that is used for engineering machinery of second embodiment of the invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The remote voice control system that is used for engineering machinery of the present invention comprises pronunciation receiver, can received speech signal, be converted into analog electrical signal, and by the wireless signal transmitting element, send to the wireless signal receiving element that is arranged on far-end.After described wireless signal receiving element receives described analog electrical signal, be converted into digital signal, be sent to speech recognition equipment.Described speech recognition equipment is searched the speech simulation information corresponding with this digital signal in internal database.Described steering order reforming unit is searched and this voice analog signal control instruction corresponding, sends to the master controller of engineering machinery, controls described engineering machinery action.
With reference to Fig. 2, be used for the remote voice control system structural drawing of engineering machinery for first embodiment of the invention is described.
Described remote voice control system 1 links to each other with the master controller 2 of engineering machinery, is used for received speech signal, is converted into steering order to master controller 2, the control engineering mechanical action.
Described remote voice control system 1 comprises remote control end and receiving end.Described receiving end is provided with to be needed on the controlled engineering machinery.
Described remote control end comprises: pronunciation receiver 11 and wireless signal dispensing device 12.Described receiving end comprises: wireless signal receiving trap 13, speech recognition equipment 14 and steering order reforming unit 15.
Described pronunciation receiver 11, received speech signal is converted to analog electrical signal with the voice signal that receives, and sends to described wireless signal dispensing device 12.
Described wireless signal dispensing device 12 sends to described analog electrical signal the described wireless signal receiving trap 13 that is positioned at receiving end.
Described wireless signal receiving trap 13 is converted to digital signal with the described analog electrical signal that receives, and sends to described speech recognition equipment 14.
Described speech recognition equipment 14 is searched the speech simulation information corresponding with described digital signal in internal database, voice analog signal is sent to described steering order reforming unit 15.
Described steering order reforming unit 15 is searched and described voice analog signal control instruction corresponding, sends to the master controller 2 of engineering machinery.
Preferably, described pronunciation receiver 11 can be microphone.
Preferably, described remote voice control system 1 also comprises control knob or joystick, by operation control knob or joystick, outputs control signals to receiving end, controls described engineering machinery action.
Adopt remote voice control system of the present invention, except passing through control knob or the described mechanical engineering vehicle of joystick Long-distance Control, can also realize the variation of engineering machinery vehicle control model by the Long-distance Control of voice realization to engineering machinery vehicle.
Preferably, described remote voice control system 1 further comprises the communication signal receiving trap 16 that is arranged on receiving end, receive the voice signal that sends by communication apparatus such as phone or mobile phones, and described voice signal is converted into analog electrical signal, be sent to described speech recognition equipment 14.
By described communication signal receiving trap 16, remote voice control system 1 of the present invention can be realized by the Long-distance Control of communication apparatus such as phone or mobile phone to engineering machinery.As long as in the coverage of communication network, all can realize control to engineering machinery.Compared with prior art, remote voice control system 1 of the present invention has increased the distance between operator and the engineering machinery vehicle greatly, can realize Remote truly, effectively guarantees operator's personal safety.
Digiplex 1a in the described wireless remote controller of prior art needs powered battery, and the time of its use and life-span are all very limited.When Digiplex 1a power supply exhausts or damages, can't realize Long-distance Control to engineering machinery.
Remote voice control system 1 of the present invention is arranged on the communication signal receiving trap 16 of receiving end, can directly receive the voice signal that sends by communication apparatus such as phone or mobile phones, realizes the Long-distance Control to engineering machinery.Described remote voice control system 1 also not exclusively relies on pronunciation receiver 11, when pronunciation receiver 11 power supplys exhaust, are damaged or during affected by environment can't the use, can control engineering machinery by communication apparatus such as any phone or mobile phones.Preferably, when adopting communication apparatus such as phone or mobile phone that engineering machinery is controlled, described remote voice control system further comprises the proof of identity device.Described proof of identity device links to each other with described communication signal receiving trap 16, is used for the communication voice signal of input is carried out proof of identity.
When adopting communication apparatus such as phone or mobile phone that engineering machinery is controlled, described remote voice control system 1 carries out proof of identity by the proof of identity device to the voice signal of importing.Be generally oral account or button input password, just give and control after password confirming is errorless, the voice signal of described input could be realized the control to engineering machinery.
Preferably, remote voice control system 1 of the present invention, the mode of keyboard that also can be by communication apparatus such as operation phone or mobile phones sends a control signal to receiving end, the control engineering mechanical action.
Preferably, remote voice control system 1 of the present invention can also be installed the video monitoring unit on described engineering machinery.Described video monitoring unit obtains the running status of described engineering machinery in real time, passes the Surveillance center that is arranged on the remote control end back by wireless communication mode.Described Surveillance center issues voice signal by communication apparatus and controls described engineering machinery according to the real-time running state of described engineering machinery.
With reference to Fig. 3, be speech recognition equipment structural drawing of the present invention.
Described speech recognition equipment 14 comprises: feature extraction unit 141, characteristic matching unit 142 and database 143.
Described feature extraction unit 141 is used to receive the digital signal of input, extracts the phonetic feature of described digital signal, is sent to described characteristic matching unit 142.
Described characteristic matching unit 142, be used for phonetic feature that described feature extraction unit 141 is extracted, mate with the characteristic model in the described database 143, obtain the voice analog signal that is complementary with described digital signal, be sent to described steering order reforming unit 15.
According to the characteristics of voice signal, voice signal is converted into digital signal after, each bar voice signal all has its specific phonetic feature.Described phonetic feature generally is meant the waveform and the spectrum information of the digital signal corresponding with voice signal.
In advance voice signal is trained, obtain the digital signal corresponding with it, extract the eigenwert of described digital signal, for example, waveform, spectrum information etc., set up the one-to-one relationship between described voice signal and the described eigenwert, as a characteristic model recording storage in database 143.
When described speech recognition equipment 14 carried out speech recognition, the digital signal of 141 pairs of inputs of described feature extraction unit was carried out eigenwert and is extracted.Described characteristic matching unit 142 mates the eigenwert that extracts and the characteristic model in the database 143, finds and the corresponding voice signal of described digital signal.
For example, described voice signal is: open up arm automatically.Described " opening up arm automatically " is converted into digital signal, it carried out eigenwert extract.The waveform of supposing the digital signal that described " opening up arm automatically " is corresponding is A, and its spectrum information is B, and it is as follows to set up the characteristic model record, and is stored in the database 143.
[opening up arm automatically]: [1] [waveform A]; [2] [spectrum information B]
When receiving digital signal, the eigenwert of described digital signal is extracted.The waveform of supposing to extract described digital signal is that A, spectrum information are B, then by the characteristic model in above-mentioned eigenwert and the database is complementary, can determine that the voice signal corresponding with described digital signal is " opening up arm automatically ".
Because in actual applications, after the voice signal of the operating personnel of all ages and classes, different sexes, different accents input was converted into digital signal, phonetic features such as the waveform of its digital signal and frequency spectrum can be very different.Therefore, during characteristic model in setting up described database 143 record,, should store many records at age for many years level, multiple accent personnel for same order.Import each operating personnel's voice signal respectively, be converted into digital signal, extract corresponding phonetic feature, form the characteristic model record, be stored in the database 143.
Mistake occurs for fear of sample, tackle every voice command training twice of each operating personnel, after the voice signal of judging twice input is separately converted to digital signal, extract the phonetic feature of described digital signal respectively, relatively the similarity between the two.When the similarity between the two reaches more than 95%, think that sample is correct, form the characteristic model record, be stored in the database 143.
The forming process of above-mentioned characteristic model record can be regarded as the renewal process to described database 143, by constantly carrying out sample training, form the characteristic model record, be stored in the database 143, enrich the characteristic model of database 143, simultaneously new and old record improves database 143.
Preferably, described remote voice control system 1 further comprises the database update device.Described database update device links to each other with database 143, after receiving update instruction, upgrades the database 143 in the described speech recognition equipment 14.
Described database update device comprises: a voice-input unit, feature extraction unit, secondary voice-input unit, secondary feature extraction unit, similarity comparing unit and an associating information unit.
A described voice-input unit is used for input speech signal, is converted into first analog electrical signal, is sent to a described feature extraction unit.
A described feature extraction unit is used to extract the phonetic feature of described first analog electrical signal, is sent to described similarity comparing unit.
Described secondary voice-input unit is used for importing the voice signal that a described voice-input unit is imported once more, is converted into second analog electrical signal, is sent to described secondary feature extraction unit.
Described secondary feature extraction unit is used to extract the phonetic feature of described second analog electrical signal, is sent to described similarity comparing unit.
Described similarity comparing unit, be used between the phonetic feature of the phonetic feature of more described first analog electrical signal and described second analog electrical signal similarity relatively, when the similarity of the two is higher than predetermined threshold value, send related information to described associating information unit.
The related information between described voice signal and the described analog electrical signal when being used to receive described related information, is set up in described associating information unit, is stored in the database 143.
For example, select bit manipulation personnel, obtain described operating personnel's phonic signal character model.At first, allow described operating personnel's input speech signal, as " lamp far away is closed ".Obtain the phonetic feature that described operating personnel import the digital signal of " lamp far away is closed " voice signal correspondence for the first time.Allow described operating personnel input speech signal " far away lamp close " once more.Obtain the phonetic feature that described operating personnel import the digital signal of " lamp far away is closed " voice signal correspondence for the second time.The similarity that compares the phonetic feature of the digital signal of obtaining for twice, when described similarity surpasses predetermined threshold value, as 95% o'clock, the voice signal " lamp far away is closed " of determining described operating personnel is correct with described digital signal, related described voice signal and described digital signal are stored in the described database 143.
Preferably, described remote voice control system can also provide the phonetic entry prompt tone.For example, described remote voice control system output input prompt for the first time sound " please be assigned control command ", and described operating personnel import " lamp far away is closed " voice signal for the first time.Described then remote voice control system output input prompt for the second time sound " is please assigned control command " once more, and described operating personnel import " lamp far away is closed " voice signal for the second time.
Preferably, described remote voice control system 1 further comprises the update instruction input block.Described update instruction input block is arranged on the remote control end, receives update signal, sends described update instruction to described database update device.
In actual applications, described update instruction input block can be voice-input unit.Described operating personnel send the voice signal of " more new database " to described update instruction input block at the remote control end.Described update instruction input block also can be operation push-button or handle.Described operating personnel operate described update instruction input block at the remote control end, trigger the update instruction input block and send update instruction to the database update device.
After described speech recognition equipment 14 obtains the voice analog signal corresponding with described digital signal, also to obtain and the corresponding steering order of described voice analog signal.
Set up the corresponding relation between described voice signal and the steering order in advance, be stored in the steering order storehouse.Described steering order storehouse is built in the described steering order reforming unit 15.
Described steering order reforming unit 15 is searched the voice analog signal control instruction corresponding that receives in described steering order storehouse, send to the master controller 2 of engineering machinery, makes master controller 2 control engineering mechanical actions.
For example, when described voice signal is " closing lamp far away ", may be " disconnecting the relay that is connected with described lamp power supply far away " with its control instruction corresponding.The two is set up corresponding relation, be stored in the steering order storehouse.When obtaining the voice analog signal of described " closing lamp far away " by identification, by searching the steering order storehouse, obtain control instruction corresponding " relay that disconnection is connected with described lamp power supply far away " with it, and be sent to the master controller 2 of engineering machinery.The relay that described master controller 2 controls are connected with described lamp power supply far away disconnects.
Adopt the embodiment of the invention one described remote voice control system, except passing through control knob or the described mechanical engineering vehicle of joystick Long-distance Control, can also realize the variation of engineering machinery vehicle control model by the Long-distance Control of voice realization to engineering machinery vehicle.
The embodiment of the invention one described remote voice control system, in use, by operating personnel at the remote control end to described pronunciation receiver 11 input speech signals, for example " close lamp far away ", the voice recognition unit 14 of described receiving end receives and the described voice signal corresponding digital signal of " closing lamp far away ", by in internal database 143, finding the voice analog signal corresponding with described digital signal, obtain and described voice analog signal control instruction corresponding, be sent to the master controller 2 of engineering machinery, be used for the control engineering mechanical action.
Because engineering machinery generally all is to carry out work in the more abominable working-yard of environment, its on-the-spot noise is general bigger, adopts voice control to be easy to occur the phenomenon of faulty operation.Think input " closing lamp far away " signal such as, operating personnel, but owing to ambient noise influence or individual's carelessness reason, mistake sent " turning on lamp far away " signal, at this moment, the engineering machinery maloperation will appear.
For fear of above-mentioned maloperation, the difference of second embodiment of the present invention and first embodiment is, further comprises the voice signal verifying function.Feed back to the remote control end by the voice analog signal that described speech recognition equipment 14 is identified, judge whether described voice analog signal is correct, if mistake, forbidding steering order reforming unit 15 is waited for and is obtained new voice signal.
With reference to Fig. 4, be used for the remote voice control system structural drawing of engineering machinery for second embodiment of the invention is described.
The difference of described second embodiment and first embodiment is: comprise voice signal feedback assembly 17, voice signal judgment means 18, reach forbidden device 19.
Described voice signal judgment means 18 is positioned at the remote control end.Described voice signal feedback assembly 17 and forbidden device 19 are positioned at receiving end.
Described voice signal feedback assembly 17 links to each other with speech recognition equipment 14.Described forbidden device 19 links to each other with described steering order reforming unit 15.
Described voice signal feedback assembly 17 realizes that with voice signal judgment means 18 communication is connected by wireless mode, extracts voice analog signal from described speech recognition equipment 14, sends to described voice signal judgment means 18.
Described voice signal judgment means 18, realize that with forbidden device 19 communication is connected by wireless mode, be used to judge whether this voice analog signal is corresponding with the voice signal that described pronunciation receiver 11 receives, and as not, returns out code to described forbidden device 19.
Described forbidden device 19 is closed described steering order reforming unit 15.
In the practical application, can loudspeaker be set at the remote control end.The voice analog signal that the described speech recognition equipment 14 that feeds back to by loudspeaker output identifies judges by voice signal judgment means 18 whether described voice signal is identical with the voice signal that described pronunciation receiver 11 receives.
In the practical application, also can display be set at the remote control end.The voice analog signal that the described speech recognition equipment 14 that feeds back to by display demonstration output identifies judges by voice signal judgment means 18 whether described voice signal is identical with the voice signal that described pronunciation receiver 11 receives.
Preferably, when communication apparatus such as adopting phone or mobile phone is controlled engineering machinery, described remote voice control system 1 is by described voice signal feedback assembly 17, return the voice analog signal of described speech recognition equipment 14 identifications, communication apparatus is carried out voice suggestion, if operating personnel find voice signal that returns and the voice signal that begins to import not simultaneously, described voice signal judgment means 18 is returned out code to described forbidden device 19, forbids master controller 2 sending controling instructions to engineering machinery.
Adopt the embodiment of the invention two described control device, can avoid because the mistake control that the working-yard noise causes has effectively guaranteed the accuracy by voice signal control engineering mechanical action.
The present invention also provides a kind of remote speech control method that is used for engineering machinery.
With reference to Fig. 5, be used for the remote speech control method process flow diagram of engineering machinery for first embodiment of the invention is described.
Step S501: received speech signal, be converted into analog electrical signal, send with wireless.
Step S502: receive described analog electrical signal, be converted to digital signal;
Step S503: search database, obtain the voice analog signal corresponding with described digital signal;
Step S504: obtain and described voice analog signal control instruction corresponding, be sent to the master controller of engineering machinery.
Preferably, can adopt following step to obtain the voice analog signal corresponding with described digital signal:
Steps A 1: the phonetic feature that extracts described digital signal;
Steps A 2: in internal database, search and obtain the voice analog signal that is complementary with this phonetic feature.
Preferably, described control method may further include: receive update instruction, more new database.Specifically can adopt more new database of following step:
Step B1: input speech signal is converted into first analog electrical signal;
Step B2: the phonetic feature that extracts described first analog electrical signal;
Step B3: import described voice signal once more, be converted into second analog electrical signal;
Step B4: the phonetic feature that extracts described second analog electrical signal;
Step B5: the similarity of the phonetic feature of the phonetic feature of more described first analog electrical signal and described second analog electrical signal, when the similarity of the two is higher than predetermined threshold value, related described voice signal and phonetic feature;
Step B6: the related information with described voice signal and phonetic feature, store database into.
Preferably, described control method further comprises: before the described received speech signal of step S501, further comprise: described voice signal is carried out proof of identity.
Adopt the embodiment of the invention one described remote speech control method, can realize the variation of engineering machinery vehicle control model by the Long-distance Control of voice realization to engineering machinery vehicle.
In order to guarantee described voice-operated accuracy, described control method may further include the voice control signal and confirms process.The difference of control method second embodiment of the present invention and first embodiment is: the voice analog signal that obtains among the step S503 is judged, when the voice signal that receives among described voice analog signal and the step S501 is corresponding, the output control instruction corresponding.
With reference to Fig. 6, be used for the remote speech control method process flow diagram of engineering machinery for second embodiment of the invention is described.
Step S601: received speech signal, be converted into analog electrical signal, send with wireless.
Step S602: receive described analog electrical signal, be converted to digital signal;
Step S603: obtain the voice analog signal corresponding with described digital signal;
Step S604: judge whether the voice signal that receives among described voice analog signal and the described step S601 is corresponding, if, enter step S605, if not, return step S601, wait for new voice signal;
Step S605: obtain and described voice analog signal control instruction corresponding, be sent to the master controller of engineering machinery.
Adopt the embodiment of the invention two described control methods, can avoid because the mistake control that the working-yard noise causes has effectively guaranteed the accuracy by voice signal control engineering mechanical action.
More than to a kind of remote voice control system and method that is used for engineering machinery provided by the present invention, be described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (13)
1, a kind of remote voice control system that is used for engineering machinery is characterized in that, described system links to each other with the master controller of engineering machinery; Described system comprises pronunciation receiver, wireless signal dispensing device, wireless signal receiving trap, speech recognition equipment, steering order reforming unit:
Described pronunciation receiver received speech signal is converted to analog electrical signal with the voice signal that receives, and sends to described wireless signal dispensing device;
Described wireless signal dispensing device sends to described analog electrical signal the described wireless signal receiving trap of far-end;
Described wireless signal receiving trap is converted to digital signal with the analog electrical signal that receives, and sends to described speech recognition equipment;
Described speech recognition equipment is searched the voice analog signal corresponding with described digital signal in internal database, voice analog signal is sent to described steering order reforming unit;
Described steering order reforming unit is searched described voice analog signal control instruction corresponding, sends to the master controller of engineering machinery.
2, remote voice control system according to claim 1 is characterized in that, described remote voice control system also comprises voice signal feedback assembly, voice signal judgment means, reaches forbidden device:
Described voice signal feedback assembly extracts voice analog signal from described speech recognition equipment, sends to described voice signal judgment means;
Described voice signal judgment means judges whether described voice signal is corresponding with the voice signal that described pronunciation receiver receives, and as not, returns out code to described forbidden device;
Described forbidden device is closed described steering order reforming unit.
3, remote voice control system according to claim 1 is characterized in that, described speech recognition equipment comprises: feature extraction unit, characteristic matching unit and database;
Described feature extraction unit is extracted the phonetic feature of the digital signal that receives, and sends to described characteristic matching unit;
The voice analog signal that is complementary with described phonetic feature is searched in described characteristic matching unit in internal database, be sent to described steering order reforming unit.
4, remote voice control system according to claim 3 is characterized in that, described remote voice control system also comprises the database update device, and described database update device receives update instruction, upgrades the database in the described speech recognition equipment.
5, remote voice control system according to claim 4, it is characterized in that described database update device comprises: a voice-input unit, feature extraction unit, secondary voice-input unit, secondary feature extraction unit, similarity comparing unit and an associating information unit;
A described voice-input unit, input speech signal is converted into first analog electrical signal, is sent to a described feature extraction unit;
A described feature extraction unit is extracted the phonetic feature of described first analog electrical signal, is sent to described similarity comparing unit;
Described secondary voice-input unit is imported the voice signal that a described voice-input unit is imported once more, is converted into second analog electrical signal, is sent to described secondary feature extraction unit;
Described secondary feature extraction unit is extracted the phonetic feature of described second analog electrical signal, is sent to described similarity comparing unit;
Described similarity comparing unit, the similarity of the phonetic feature of the phonetic feature of more described first analog electrical signal and described second analog electrical signal, when the similarity of the two is higher than predetermined threshold value, described voice signal and phonetic feature are sent to described associating information unit;
The related information between described voice signal and the described phonetic feature is set up in described associating information unit, is stored in the database.
6, according to each described remote voice control system of claim 1 to 5, it is characterized in that described remote voice control system also comprises the communication signal receiving trap;
Described communication signal receiving trap receives the voice signal that communication apparatus sends, and is converted into analog electrical signal, is sent to described speech recognition equipment.
7, speech control system according to claim 6 is characterized in that, described remote voice control system also comprises the proof of identity device; Described proof of identity device links to each other with described communication signal receiving trap, is used for described communication apparatus is carried out proof of identity.
8, a kind of remote speech control method that is used for engineering machinery is characterized in that, described method comprises:
Steps A: received speech signal, be converted into analog electrical signal, send with the wireless signal form.
Step B: receive described analog electrical signal, be converted to digital signal;
Step C: search database, obtain the voice analog signal corresponding with described digital signal;
Step D: obtain and described voice analog signal control instruction corresponding, be sent to the master controller of engineering machinery.
9, remote speech control method according to claim 8 is characterized in that, further comprises after the step C, before the step D:
Judge whether the voice signal that receives in described voice analog signal and the steps A is corresponding, if, enter step D, if not, return steps A, wait for new voice signal.
10, remote speech control method according to claim 8 is characterized in that, adopts following step to obtain the voice analog signal corresponding with described digital signal:
Extract the phonetic feature of described digital signal;
Search database, obtain the voice analog signal that is complementary with described phonetic feature.
11, remote speech control method according to claim 10 is characterized in that, described method further comprises: receive update instruction, more new database.
12, remote speech control method according to claim 11 is characterized in that, adopts more new database of following step:
Input speech signal is converted into first analog electrical signal;
Extract the phonetic feature of described first analog electrical signal;
Import described voice signal once more, be converted into second analog electrical signal;
Extract the phonetic feature of described second analog electrical signal;
The similarity of the phonetic feature of the phonetic feature of more described first analog electrical signal and described second analog electrical signal, when the similarity of the two is higher than predetermined threshold value, related described voice signal and phonetic feature;
Related information with described voice signal and phonetic feature stores database into.
13, remote speech control method according to claim 8 is characterized in that, before the described received speech signal of steps A, further comprises: described voice signal is carried out proof of identity.
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