CN105156870A - Intelligent area protection system - Google Patents

Abstract

The invention discloses an intelligent area protection system and belongs to the technical field of protective systems of machines. In order to achieve the situation that a running machine can only make deserved actions according to special sounds within an alarming range, the following technological measures that a plurality of sound pickers are arranged within the alarming range of the machine or at proper positions beyond the alarming range of the machine and connected with an analog-digital conversion circuit which is connected with a computer; electronic data of vocal prints or vocal print characteristics of multiple sounds are stored in the computer, the electronic data of the vocal prints or the vocal print characteristics are associated with a computer instruction; and the computer is connected with a control circuit of the machine are taken. The measures have the beneficial effects that the computer can calculate the accurate position and the direction of a sound source according to the spatial positions where the sound pickers are specifically installed and the time difference between time when the sounds reach the sound pickers. Only sounds within an alarming area can be recognized and corresponding responses are made due to calculation, and the machine can be intelligent to a certain extent.

Description

Intelligent region protective system

Technical field

The invention belongs to a technical field of machinery equipment protective system.

Background technique

A lot of machinery equipment, the manufacturing mechanism of such as building machinery, every profession and trade, means of transportation particularly handrail elevator, in use have certain danger.Therefore, for protecting the safety of personnel, they are all equiped with emergency shutdown protective system.But these emergency shutdown protective systems all need the effect of manual hand manipulation's competence exertion substantially.For handrail elevator, handrail elevator is equipped with emergency shutdown protective system, it can be controlled by emergency stop switch.When meet accident event time, such as there is the trick of people to fall by card or on handrail elevator, if there is people at this moment can press emergency stop switch in time, stop the operation of handrail elevator, so just can avoid the further expansion of accidental event, certain protective action is played to all users; As handrail elevator, emergency stop switch is housed, and carrys out the machine of Control protection system operation in addition much by stop switch.Visible emergency stop switch is all types of machinery equipment protective systems, uses more protection instruction input mode.But the emergency stop switch of existing machinery equipment, can only be installed on some places of machine or operational site, it always has certain distance apart from user or victim, brings certain difficulty when needing to use it to the user of machine or victim; Such as handrail elevator is all equipped with emergency stop switch at its multiple positions, as long as press it, handrail elevator will be out of service.But the emergency stop switch of handrail elevator has all been contained in the two ends up and down of handrail elevator, and all in comparatively shelter.So, on the handrail elevator be in operation, if when having that people is injured needs its operation of emergent stopping, be often difficult to accomplish in time.It is many-sided for tracing it to its cause, when meet accident accident time, the psychology of people is all be among fear, and the few can expect the operation that can be stopped handrail elevator by emergency stop switch.And maximum reason is also that most people does not all know handrail elevator is equipped with emergency stop switch, more do not know the concrete position that it is installed.Even if know its mounting point, for these reasons, the thing that it neither can accomplish at once will be pressed in time.When danger occurs, if the operation consequence can not stopping handrail elevator in time will be more serious; Other machinery equipment has similar handrail elevator such, when causing danger situation, is difficult to press the similar situation of emergency stop switch in time.Visible, how to allow operating machinery equipment, when there is accident, need not press emergency stop switch and just can stop in time as the case may be, be a significantly thing.Unfortunately under the prior art, for this problem not great progress.

Summary of the invention

As you know, sound can reflect on-the-spot situation.Particularly people is when suffering unexpected unexpected injury, all can send painful and terrified squel.The generation of visible scream acoustic energy full out reflection accident.If the acoustic situations that general-purpose computers " monitoring " are on-the-spot, there is the accidental event of burst, when squel " heard " by computer, just computer or computer-controlled machine is allowed to make due reaction with the fastest speed, the such as operation of emergent stopping machine.So just be equivalent to " press " emergency stop switch of machinery equipment by computer, serve the effect of very first time protection personnel; If but only rely on the foundation of squel as " pressing " emergency stop switch, be certain to produce a lot of misoperations.Because squel from all directions all can transmit, these sound are bound to make protective system produce misoperation.Therefore the scope of computer " monitoring " must be the scope with machine device-dependent.This scope is named in this application as fence coverage.To the sound outside fence coverage, simultaneous computer must accomplish that " turning a deaf ear to " could reduce the possibility that protective system produces misoperation like this.

Can in order to allow operating machinery equipment only make should have action according to the especial sound (sound instruction of such as squel or emergency shutdown) in fence coverage, this invention takes following technical measures: the suitable place in the fence coverage of machinery equipment or outside the fence coverage of machinery equipment arranges multiple pickup device, pickup device connects analog to digital conversion circuit, analog to digital conversion circuit connects computer, calculator memory contains the vocal print of multiple sound or the electronic data of vocal print feature, electronic data and the computer order of these vocal prints or vocal print feature are associated together, computer connects the control circuit of machinery equipment.

The benefit done like this is: the suitable place in the fence coverage of machinery equipment or outside the fence coverage of machinery equipment arranges multiple pickup device, and pickup device connects analog to digital conversion circuit, and analog to digital conversion circuit connects computer.Make pickup device can pick up sound in alert area like this, time difference when simultaneous computer can arrive each pickup device according to the spatial position of the concrete installation of each pickup device and sound, calculate accurate location and the direction of sound source.When computer receives the vocal print signal of the sound that people sends, and confirm its sound source from alert area time, the vocal print electronic data in it and storage is just carried out identification comparison by computer; When computer receives the vocal print signal of the sound that people sends, and confirm its sound source from outside alert area time, computer will the comparison of refusal to this vocal print signal.So just make computer be only limited to the sound vocal print identified in alert area, so just make machine possess certain intelligence.When the electronic data comparison success of the vocal print in current vocal print signal and storage or vocal print feature, then Bias press by computer, sends the machine instruction that the computer language instruction of execution associated by this vocal print is corresponding.And by control circuit, the actuator of the actuator or protective system that control each instruction performs.Make machinery equipment can complete action or the shutdown of setting.

Embodiment

The fence coverage of the machinery equipment described in the application, the user referring to machinery equipment reasonably or the activity space scope needed, or machinery equipment may hurt people, need space range that it is enhanced your vigilance, can certainly be by the space range of manually specifying arbitrarily; The suitable place in the fence coverage of machinery equipment or outside fence coverage described in the application arranges multiple pickup device (microphone), refers at the sound that can clearly pick up in fence coverage with by calculating function and judges that multiple pickup device is installed in the place of Sounnd source direction and position in fence coverage.

The direction of determination sound source of the present invention and the principle of position are that the sound sent based on space distribution position and the sound source of multiple pickup device arrives the result because of Number synthesis computing such as time difference of each pickup device.Therefore, combination installation (quantity the is different) form of multiple pickup device and the combination of mounting point have varied.Sound when there being people in fence coverage; the sound instruction sound of such as emergency shutdown or the people squel when having an accident; if computer confirm these sound be from fence coverage time, the vocal print electronic data in the vocal print electronic data that computer just transmits pickup device and storage is analysed and compared.When a certain vocal print electronic data comparison in the vocal print electronic data that pickup device transmits and storage is successful, computer just presses Bias, and the instruction sending the association of this sound, to control circuit, drives actuator to perform instruction by control circuit.

The present invention can the sound in designated computer " monitoring " a certain region, and the scream acoustic energy making the user of machinery equipment send when meeting accident event like this becomes the action of " pressing " emergency stop switch, makes them obtain protection large as far as possible.Generally speaking; the present invention is exactly the sound instruction identification system that one can make computer only identify the sound in appointed area (alert area) and perform; it can interference effectively outside exclusionary zone; by the generation of the sound Timeliness coverage accident at scene; and the safety of timely protection personnel, prevent the further expansion of accident.

Present embodiment just illustrates working principle of the present invention with the acoustic control emergency shutdown of handrail elevator.Can make according to the sound instruction in alert area to allow operating handrail elevator and should have action, this invention takes following technical measures: the suitable place in the fence coverage of handrail elevator or outside the fence coverage of handrail elevator arranges multiple pickup device, pickup device connects analog to digital conversion circuit, analog to digital conversion circuit connects computer, calculator memory contains the vocal print of executable multiple sound instruction or the electronic data of vocal print feature, electronic data and the computer order of these vocal prints or vocal print feature are associated together, and computer connects the control circuit of handrail elevator.

The fence coverage of handrail elevator (abbreviation elevator), the step being exactly mainly it move the space range of process.This fence coverage is a rectangular substantially, because step moves within the scope of this, so often cause the generation of peril.Having an accident, the situation such as such as have the hand of passenger, pin to be pressed from both sides or to fall when boarding, due to human body be subject to unexpected painful time, the natural reaction of people sends squel.This reaction is instinct, and the squel that different people sends has common vocal print feature all substantially.The application of this example is exactly based on this characteristic, provides the foundation of action to the protective system of elevator; But it is large that the occasion of application elevator is all the stream of people, a riot of sound place.In order to get rid of the interference that other directions are transmitted, the suitable place of the present invention in the fence coverage of elevator or outside the fence coverage of elevator arranges multiple pickup device, the concrete arrangement of pickup device has varied, and one is wherein, all installs pickup device at four angles of fence coverage.Pickup device is connected analog to digital conversion circuit, and analog to digital conversion circuit connects computer.Such structure just can make calculating function obtain the time difference of same sound according to the distributing position of pickup device and each pickup device, and COMPREHENSIVE CALCULATING goes out the spatial position of sound source; When event that elevator meets accident, such as, elevator there is people injured and therefore send squel.Computer receives the sound vocal print of squel, simultaneously by time difference of each pickup device, confirm the sound source of this vocal print from alert area time, computer just sends the computer order (halt instruction) performing the association of this vocal print by Bias; Computer is connected to control circuit, and control circuit connects the actuator of protective system, provides the basis of hardware for performing this instruction.Control circuit just performs halt instruction by the actuator of protective system after receiving halt instruction at once, makes elevator out of service, avoids the state of affairs to worsen further, protect user.This process, " has pressed " emergency stop switch rapidly after being equivalent to " to hear " squel by computer, and the very first time protects the user of elevator.

Claims (1)

1. Intelligent region protective system; mainly comprise pickup device, computer, control circuit; it is characterized in that: the suitable place in the fence coverage of machinery equipment or outside the fence coverage of machinery equipment arranges multiple pickup device; pickup device connects analog to digital conversion circuit; analog to digital conversion circuit connects computer; calculator memory contains the vocal print of multiple sound or the electronic data of vocal print feature; electronic data and the computer order of these vocal prints or vocal print feature are associated together, and computer connects the control circuit of machinery equipment.