CN109983907A - Electric tool - Google Patents
Electric tool Download PDFInfo
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- CN109983907A CN109983907A CN201711482121.4A CN201711482121A CN109983907A CN 109983907 A CN109983907 A CN 109983907A CN 201711482121 A CN201711482121 A CN 201711482121A CN 109983907 A CN109983907 A CN 109983907A
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- electric tool
- detection signal
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/006—Control or measuring arrangements
- A01D34/008—Control or measuring arrangements for automated or remotely controlled operation
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The present invention provides a kind of electric tool, comprising: detection module, detection module are used to detect the feeding parameter of operating condition and/or electric tool and generate detection signal；Processing module, processing module are connect with detection module, for receiving the detection signal of detection module sending and generating corresponding load control signal according to detection signal；Control module and motor, control module are connect with processing module and motor respectively, for adjusting the corresponding load parameter of motor according to load control signal.Electric tool according to the present invention can intelligently adjust the revolving speed of corresponding motor on grass trimmer according to the status information of the lawn characteristic information and grass trimmer detected, realize the intelligent speed-regulating of grass trimmer, improve efficiency, extend single packet time, improve personnel's operability.
Description
Technical field
The present invention relates to power tools technology field, in particular to a kind of electric tool.
Background technique
With the improvement of people's life quality, to living environment, higher requirements are also raised, and lawn is because of its broad beauty
Become greening mode common in urban greening, in order to keep the beauty on lawn it is clean and tidy need periodically lawn trim it is whole
Reason, as the plantation on lawn is more and more, the lawn tool for trimming arrangement is also more diversified.
Currently, many electric tools also meet the needs of in life in continuously improving, such as repairing lawn or garden are cut
Careless machine, grass-mowing machine etc., common turf-mown tool is mainly grass trimmer, and usual grass trimmer mainly includes casing, body, walking
Wheel, motor, cutterhead, blade and control device, grass trimmer can trim lawn while walking on lawn, mow
The revolving speed of motor is usually fixed when machine maintenance mowing, due to the height of lawn different zones grass, density and lawn topography
The gradient is different, and grass trimmer cannot cause efficiency relatively low with the different situations intelligent speed-regulating on lawn, and single packet time is short, therefore, such as
What is developed as the grass trimmer of the different intelligent of lawn or operating condition speed regulation becomes problem to be solved.
Summary of the invention
In view of this, the present invention provides a kind of electric tool.
In order to solve the above technical problems, the invention adopts the following technical scheme:
Electric tool according to an embodiment of the present invention, comprising:
Detection module, the detection module are used to detect the feeding parameter of operating condition and/or the electric tool and generate inspection
Survey signal；
Processing module, the processing module are connect with the detection module, the institute issued for receiving the detection module
It states detection signal and corresponding load control signal is generated according to the detection signal；
Control module and motor, the control module are connect with the processing module and the motor respectively, are used for basis
The load control signal adjusts the corresponding load parameter of the motor.
Further, the operating condition includes the height and/or density on lawn.
Further, the feeding parameter includes feed speed and/or feeding dynamics.
Further, the load parameter includes that motor duty ratio, output power of motor, motor speed and output are turned round
Square.
Further, the motor includes work head motor or self-powered motor.
Further, the detection module includes capacitance sensor and the detection signal includes lawn detection signal, institute
Capacitance sensor is stated for detecting the careless height and/or density that cut and generating the lawn detection signal.
Further, described in the change frequency for the capacitance that the detection module is measured by the capacitance sensor obtains
The density of grass.
Further, the electric tool includes the rear portion for being provided with push rod, and the front opposite with the rear portion, institute
Stating capacitance sensor is front that is one or more and being mounted on the electric tool.
Further, the capacitance sensor is multiple, height of multiple capacitance sensors in the electric tool
Front arranged spaced apart in the electric tool on direction.
Further, the detection module further includes blade height sensor, and the detection signal further includes blade height
Signal is detected,
The capacitance sensor detects signal for detecting height careless on lawn and generating the lawn,
The blade height sensor is used to detect the height of the electric tool cutter and generates the blade height
Signal is detected,
The processing module detects signal according to the lawn and the blade height detects signal, and judgement should be cut away
Grass height to generate the load control signal.
Further, the blade height sensor is honeywell switch sensor.
Further, the detection module includes thrust pickup and body angular transducer, and the detection signal includes
Thrust measurement signal and angle detection signal,
The thrust pickup is used to detect the implementation power when electric tool is advanced to generate the thrust measurement letter
Number；
The body angular transducer is used to detect the body angle of the electric tool and generates the angle detection letter
Number,
The processing module generates the load according to the thrust measurement signal and the angle detection signal and controls
Signal.
Further, the processing module is compared with predetermined angle according to the angle detection signal and is judged whether there is
The gradient judges upward slope or descending according to the thrust measurement signal when judgement has the gradient, and calculates the implementation resistance
Power.
Further, the detection module includes wheel speed sensors and the detection signal includes speed detection signal,
The wheel speed sensors are used to detect the wheel rotor speed of the electric tool and generate the speed detection signal,
The speed detection signal is compared and gives birth to preset velocity amplitude the processing module based on the received
At the load control signal, the load control signal is to indicate to increase the load parameter or reduce the load ginseng
Number.
Further, the detection module includes voltage sensor and the detection signal includes voltage detection signal,
The voltage sensor is used to detect the voltage status of the motor to generate the voltage detection signal,
The processing module generates the load control signal, the load control signal according to the voltage detection signal
To indicate to increase the load parameter or reduce the load parameter.
Further, the voltage status include voltage change with time situation and work in voltage waveform,
The processing module judges under mutation status according to the voltage detection signal as rising edge or failing edge, when
The load control signal of the load parameter is reduced to generate prompt when rising edge, prompt is generated when for failing edge and is increased
The load control signal of the load parameter.
Further, the detection module further includes voltage sensor and the detection signal further includes voltage detecting letter
Number,
The voltage sensor is used to detect the voltage status of the motor to generate the voltage detection signal,
The processing module generates the load control signal, the load control signal according to the voltage detection signal
To indicate to increase the load parameter or reduce the load parameter.
Further, the voltage status include voltage change with time situation and work in voltage waveform,
The processing module judges under mutation status according to the voltage detection signal as rising edge or failing edge, when
The load control signal of the load parameter is reduced to generate prompt when rising edge, prompt is generated when for failing edge and is increased
The load control signal of the load parameter.
Further, the detection module includes swing speed sensor, and the detection signal includes swing speed detection
Signal,
The swing speed sensor is for detecting the swing speed when electric tool is beaten the grass and generating the swing
Speed detection signal；
The processing module generates the load control signal, the load control signal according to the swing speed size
To indicate to increase the swing speed or reduce the swing speed.
The advantageous effects of the above technical solutions of the present invention are as follows:
Electric tool according to an embodiment of the present invention can be according to the lawn feature detected by rationally designing to it
Information and the status information of electric tool intelligently adjust the load parameter of corresponding motor on electric tool, realize the intelligence of electric tool
It can adjust the speed, improve the efficiency of electric tool, extend single packet time, it is operational to improve personnel.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the grass trimmer of one embodiment of the invention；
Fig. 2 is the enlarged diagram of the local A of grass trimmer in Fig. 1；
Fig. 3 is the structural schematic diagram of the grass trimmer of another embodiment of the present invention；
Fig. 4 is a detection signal graph of the grass trimmer of the embodiment of the present invention；
Fig. 5 is the module map of the grass trimmer of one embodiment of the invention；
Fig. 6 is the structural schematic diagram of the grass trimmer of another embodiment of the invention；
Fig. 7 is the operation schematic diagram of the capacitance sensor of grass trimmer in Fig. 6；
Fig. 8 is the module map of the grass trimmer of another embodiment of the present invention；
Fig. 9 is the module map of the grass trimmer of another embodiment of the invention；
Figure 10 is the module map of the grass trimmer of another embodiment of the invention；
Figure 11 is the module map of the grass trimmer of another embodiment of the invention.
Appended drawing reference:
Airborne signals 1；Load signal 2；Signal 3 on hard ground；
Capacitance sensor a；Capacitance sensor b；Capacitance sensor c；
Careless X；Careless Y；Careless Z；
Grass trimmer 100；
Detection module 10；
Capacitance sensor 11；Blade height sensor 12；Thrust pickup 13；
Body angular transducer 14；Wheel speed sensors 15；Voltage sensor 16；
Processing module 20；
Control module 30；
Motor 40.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
Personnel's every other embodiment obtained, shall fall within the protection scope of the present invention.
In order to further illustrate the invention, can be illustrated by taking grass trimmer as an example, it below can be specific in conjunction with attached drawing
Grass trimmer 100 according to an embodiment of the present invention is described.
As shown in Figure 1 to 11, grass trimmer 100 according to an embodiment of the present invention include detection module 10, processing module 20,
Control module 30 and motor 40.
Specifically, detection module 10 is used to detect the feeding parameter of operating condition and/or grass trimmer and generates detection signal；Place
Reason module 20 is connect with detection module 10, for receiving the detection signal of the sending of detection module 10 and according to detection signal generation pair
The load control signal answered；Control module 30 is connect with processing module 20 and motor 40 respectively, for according to load control signal
Adjust the corresponding load parameter of motor 40.
That is, grass trimmer 100 according to an embodiment of the present invention is mainly by detection module 10, processing module 20, control
Module 30 and motor 40 are constituted, wherein and detection module 10 can be used for detecting operating condition, and operating condition may include the information on lawn, than
Such as height and density careless on lawn, or the feeding parameter for detecting grass trimmer, that is, the status information of grass trimmer, than
The knob angle of such as blade height, grip part, body angle, the voltage for taking turns rotor speed and motor.Detection module 10 can root
Corresponding detection signal is generated according to the feeding parameter of detected operating condition and/or grass trimmer, feeding parameter may include feeding
Speed and/or feeding dynamics.Detection module 10 links together with processing module 20, the corresponding detection signal hair that will be generated
Give processing module 20.In present embodiment, the operating condition detected of detection module 10 is specifically as follows the characteristic information on lawn, such as
Height, the density degree etc. of grass, but it is without being limited thereto in the present invention, for example, when electric tool is chain saw, corresponding operating condition
It can be material, the hardness of cutter part；When electric tool is grass-mowing machine, corresponding operating condition can be the density journey of grass
Degree.
Processing module 20 is used to receive the corresponding detection signal of the sending of detection module 10, and detects based on the received
Signal judge lawn state and grass trimmer working condition to generate corresponding load control signal, and processing module 20 with
Control module 30 links together, and the corresponding load control signal of generation can be sent to control module by processing module 20
30.Control module 30 can be used for the load control signal of the sending of receiving processing module 20, and control module 30 can be with grass trimmer
On motor 40 link together, control module 30 can adjust corresponding electricity in grass trimmer according to the load control signal that receives
The corresponding load parameter of machine 40, such as the revolving speed or output power etc. of motor.
It wherein, may include multiple motors in grass trimmer, control module 30 can be used to control what driving blade was mowed
Load motor can be used for the motor of control driving grass trimmer walking, can be changed accordingly by the adjusting of control module 30
The output revolving speed of motor, different loads export different rotating speeds, realize that intelligence is adjusted, for example, the load motor that driving blade is mowed
High revolving speed can be exported in high load, when low-load can export the slow-speed of revolution, and no-load speed can be set when unloaded.
During grass trimmer works on lawn, when grass trimmer enters when height is higher or density biggish region of grass, inspection
Corresponding detection signal can be generated according to the lawn information detected and be sent to processing module 20, processing module by surveying module 10
20 receive the detection signal of the sending of detection module 10 and analyze it judgement, and processing module 20 is generated according to analytical judgment
Corresponding load control signal is simultaneously sent to control module 30, and control module 30 load control signal can be adjusted based on the received
Thus corresponding motor, such as load motor adjust the load motor that driving blade is mowed, cut so that load motor output meets
The high revolving speed of careless demand；When the region that the height that grass trimmer enters grass is lower or lawn is sparse, control module 30 adjusts negative
Carrying motor makes it export the slow-speed of revolution, avoids the high revolving speed of load motor under a low load, improves working efficiency, reduces energy
Consumption, the intelligence for realizing grass trimmer are adjusted.
Grass trimmer 100 according to an embodiment of the present invention as a result, can be according to the lawn characteristic information and grass trimmer detected
Status information intelligently adjust the load parameter of corresponding motor, realize intelligent speed-regulating, improve efficiency, extend single packet time, improve
Personnel's operability.
In some embodiments of the invention, load parameter may include motor duty ratio, output power of motor, motor turn
Speed and output torque, control module 30 can adjust corresponding motor in grass trimmer according to the load control signal received
Relevant parameter, to realize that the intelligence of grass trimmer is adjusted.
In other embodiments of the invention, motor 40 may include work head motor or self-powered motor, work head electricity
Machine can drive the blade of grass trimmer to rotate the trimming for carrying out lawn, and self-powered motor can drive the rotation of wheel.
According to one embodiment of present invention, as shown in figure 5, detection module 10 may include capacitance sensor 11, detection
Signal may include lawn detection signal, and when capacitance sensor 11 touches the grass on lawn, capacitance sensor 11 can be used
In the height and/or density of the grass that should be cut on detection lawn, and according to the height of the grass detected, the density of grass or grass
The combination of height and density generate corresponding lawn and detect signal, the lawn that detection module 10 detects capacitance sensor 11 is examined
It surveys signal and is sent to processing module 20, processing module 20 is analyzed and determined according to lawn detection signal and generates corresponding load
Control signal is sent to control module 30, so that control module 30 adjusts corresponding motor 40 according to load control signal, it is real
The intelligence of existing mower motor is adjusted.
On the close lawn of different natural plant heights or grass, capacitance sensor 11 can acquire out different types of signal, in difference
Detection signal under operating condition is different, as shown in figure 4, detection of the grass trimmer on load condition, light condition or hard ground
Signal is different, can judge work operating condition according to different signals, compare with setting value, adjusts phase by control module 30
The duty ratio for answering motor 40 makes motor 40 export corresponding load parameter, such as motor speed or output power etc..
In some embodiments of the invention, the capacitance that capacitance sensor 11 measures under careless density different on lawn becomes
Change difference, the change frequency for the capacitance that can be measured by capacitance sensor 11 obtains density careless on lawn to calculate.
In other embodiments of the invention, grass trimmer may include the rear portion for being provided with push rod, and with rear portion phase
Pair front, capacitance sensor 11 can be one or more, and capacitance sensor 11 may be mounted at the front of grass trimmer, capacitor
The quantity of sensor 11 and specific installation site can according to need reasonable selection.
According to some embodiments of the present invention, capacitance sensor 11 is multiple, and multiple capacitance sensors 11 can be in height
The front arranged spaced apart in grass trimmer, spacing distance can reasonably select according to the actual situation on direction.Thus, it is possible to not
Level grass is accurately detected.
In one embodiment of the invention, as shown in Figure 6 and Figure 7, there are three capacitance sensors for the setting of grass trimmer front
A, b, c, capacitance sensor a, b, c successively arrange in the height direction, and wherein a is with distance between a and blade near blade
D, spacing distance is D between a, b, c, i.e. b is 2D, c with blade clearance distance and blade clearance distance is 3D.Electricity is explained in detail below
Hold the height how sensor measures the grass cut away, when cutting grass X, capacitance sensor a will not touch careless X, therefore
Detection module 10 generates the careless altitude range cut away and is less than D, and processing module 20 receives the detection signal of detection module 10
Afterwards, corresponding load control signal will be generated.Similarly, when cutting grass Y, capacitance sensor a can be triggered, and capacitance sensing
Device b will not be triggered, therefore the careless altitude range cut away that detection module 10 detects is D-2D, and processing module 20 is corresponding
Corresponding load parameter signal can be generated.When cutting grass Z, capacitance sensor b is triggered, therefore what is detected cuts away natural plant height
Degree range is 2D-3D, and processing module 20 can generate corresponding load parameter signal accordingly.When capacitance sensor c is triggered,
Determine to detect cuts away natural plant height degree higher than 3D, and processing module 20 can generate corresponding load parameter signal accordingly to adjust
Motor 40 is saved to work with bigger load parameter.
In some embodiments of the invention, as shown in figure 8, detection module 10 can also include that blade height senses
Device 12, the detection signal that detection module 10 generates can also include that blade height detects signal, and capacitance sensor 11 can be used for
It detects height careless on lawn and generates lawn detection signal, capacitance sensor 11 sends the lawn detection signal of generation everywhere
Module 20 is managed, blade height sensor 12 can be the sensor for being able to detect blade height, and concrete type can according to need
It reasonably selects, blade height sensor 12 can be used for detecting the height of grass trimmer cutter, and according to detected blade
Height generates corresponding blade height detection signal, and blade height sensor 12 sends the blade height detection signal of generation to
Processing module 20.
Processing module 20 can be according to the lawn detection signal and blade height that the capacitance sensor 11 received generates
The blade height detection signal that sensor 12 generates is judged, the height of the grass cut away is obtained according to judgement and is generated corresponding
Load control signal, the load control signal of generation sends control module 30,30 basis of control module by processing module 20
The load control signal received adjusts corresponding motor 40, to judge the work of grass trimmer by the careless length that judgement is cut away
It loads, intelligence adjusts the load parameter of motor 40.
In another specific embodiment of the invention, blade height sensor 12 can be honeywell switch sensor, suddenly
Your switch sensor may be mounted on the cutterhead of installation blade, and it is suitable convenient for other of detection blade height also to may be mounted at
Position, honeywell switch sensor can judge the height of blade by electromagnetic induction.
According to some embodiments of the present invention, as shown in figure 9, detection module 10 may include thrust pickup 13 and body
Angular transducer 14, the detection signal that detection module 10 generates may include thrust measurement signal and angle detection signal, such as
Thrust pickup 13 may be mounted at the grip part on grass trimmer, also may be mounted at other and is able to detect that grip part knob angle
The suitable position of degree, thrust pickup 13 can be used for detecting grass trimmer advance when implementation power to generate thrust measurement signal,
For example, thrust pickup 13 can be used for detecting the knob angle of the grip part on grass trimmer, and according to detected gripping
The knob angle in portion generates corresponding thrust measurement signal, and the thrust measurement signal of generation is sent processing by thrust pickup 13
Module 20；Body angular transducer 14 may be mounted at the suitable position that can accurately detect body angle, may be mounted at and cuts
The front of careless machine, body angular transducer 14 can be used for detecting the body angle of grass trimmer and generate corresponding angle detection letter
Number, the angle detection signal of generation is sent processing module 20 by body angular transducer 14.
Processing module 20 can generate load control signal according to thrust measurement signal and angle detection signal, handle mould
Block 20 can according to received thrust measurement signal may determine that the feeding parameter of grass trimmer, i.e. implementation power size, and can be with
According to received angle detection signal judge the walking states of body, and according to the walking states for carrying out power size and body
Carry out resistance to calculate to generate corresponding load control signal, processing module 20 can send the load control signal of generation
To control module 30, control module 30 is joined according to the respective load that the load control signal received adjusts corresponding motor 40
Number.
Other embodiments according to the present invention, processing module 20 can generate the body angular transducer 14 received
Angle detection signal and predetermined angle compare judgement, by comparison judge determination lawn whether have the gradient, when judgement has
When the gradient, thrust measurement signal that processing module 20 is generated further according to the thrust pickup 13 that receives judging to go up a slope or
Descending, and then calculate and carry out resistance, corresponding load control signal is issued to control module 30 according to calculated implementation resistance,
Control module 30 adjusts the respective load parameter of corresponding motor 40 according to the load control signal received.
According to judgment basis of the resistance as adjusting motor 40 is carried out, mainly according to the knob angle of the grip part detected
Degree judges thrust size and judges the walking states of body according to body angle, and then calculates corresponding implementation resistance, for example,
On lawn, the walking states of upper machine body can be for upward slope, descending or in level walking, and body angle is θ when body is walked2, hold
The knob angle in portion is θ1, according to body angle, θ2The gradient is judged whether there is, when there is the gradient, in conjunction with the knob angle of grip part
θ1Range judgement be upward slope or descending state, according to carrying out resistance and θ1And θ2Between relationship calculate carry out resistance F=f
(θ1θ2), the respective load parameter of motor 40 is intelligently adjusted further according to the size for carrying out resistance, such as the output revolving speed of motor.
In some embodiments of the invention, as shown in Figure 10, detection module 10 may include wheel speed sensors 15, and examine
Surveying signal may include speed detection signal, and wheel speed sensors 15 can be used for detecting the wheel rotor speed of grass trimmer and generate corresponding
Speed detection signal, speed detection signal sends processing module 20 by detection module 10, and processing module 20 is according to being received
To speed detection signal be compared with preset velocity amplitude, and generate load control signal, load control signal is to refer to
Show and increase load parameter or reduce load parameter, for example, the load control signal of speed-raising or reduction of speed, processing module 20 can be indicated
Control module 30 is sent by the load control signal that can indicate to increase or decrease load parameter of generation, control module 30
The motor 40 that driving wheel rotation is adjusted according to the load control signal that can indicate to increase or decrease load parameter received, when
When wheel rotor speed is larger, work drive motor 40 can be reduced revolving speed, and when wheel rotor speed is smaller, work drive motor 40 can be by revolving speed
It improves, reaches preset velocity amplitude.In present embodiment, detection module 10 can also be displacement sensor or pressure sensing
Device.
Detection module 10 may be also used in detection feeding dynamics on chain saw, to adjust the corresponding load ginseng of chain saw motor
Number.Specifically, detection module 10 detects the size for the lower surging being applied on chain saw when operator cuts workpiece, generates and corresponds to
Load control signal.For example, the load control signal of speed-raising or reduction of speed can be indicated, processing module 20 can be by the energy of generation
The load control signal that enough instructions increase or decrease load parameter is sent to control module 30, and control module 30 can be according to reception
To can indicate increase or decrease load parameter load control signal adjust drive chain saw cut chain motor, work as operation
When the power of pushing chain saw is smaller when person cuts, work drive motor can be reduced revolving speed, and the power of chain saw is pushed when operator's cutting
When larger, work drive motor can be improved revolving speed.In present embodiment, detection module 10 can be pressure sensor.
In addition, detection module 10 may be also used in and detect feed speed on grass-mowing machine, so that it is corresponding to adjust grass-mowing machine motor
Load parameter.Specifically, the swing speed speed when detection of detection module 10 is using grass-mowing machine, i.e. operator brandish grass-mowing machine
Speed speed, generate corresponding load control signal.When the speed that operator brandishes is slower, work drive motor can be by revolving speed
It improves, when the fast speed that operator brandishes, work drive motor can be reduced revolving speed, reach preset velocity amplitude.This
In embodiment, detection module 10 can be acceleration transducer.
In other specific embodiments of the invention, as shown in figure 11, detection module 10 may include voltage sensor
16, and detecting signal may include voltage detection signal, voltage sensor 16 can be used for detecting the voltage status of motor 40 with
Voltage detection signal is generated, detection module 10 can send processing module 20, processing module for the voltage detection signal of generation
20 can generate the load control that can indicate to increase load parameter or reduction load parameter according to the voltage detection signal received
Signal processed, for example, the load control signal that can indicate speed-raising or reduction of speed can be generated, processing module 20 can refer to generation
Show that the load control signal for increasing or decreasing load parameter is sent to control module 30, control module 30 can according to what is received
Indicate that the load control signal for increasing or decreasing load parameter adjusts corresponding 40 respective load parameter of motor, for example motor is defeated
Power or output revolving speed out.
According to some embodiments of the present invention, the voltage status of the motor 40 detected of voltage sensor 16 may include electricity
The voltage waveform in change with time situation and the work of motor 40 is pressed, processing module 20 can be sentenced according to voltage detection signal
Break for rising edge or failing edge under mutation status, prompt can be generated when for rising edge reduces the load control of load parameter
Signal processed, for example the load control signal of prompt reduction of speed can be generated, prompt is generated when for failing edge increases load parameter
Load control signal, for example the load control signal of prompt speedup can be generated.
In some embodiments of the invention, detection module 10 can also include voltage sensor 16 and wheel speed simultaneously
Sensor 15, and detecting signal can also include voltage detection signal and speed detection signal, voltage sensor 16 can be used for
The voltage status of motor 40 is detected to generate voltage detection signal, wheel speed sensors 15 are used to detect the wheel rotor speed of grass trimmer simultaneously
Formation speed detects signal, the voltage detection signal and wheel speed sensors that processing module 20 can be generated according to voltage sensor 16
15 speed detection signals generated can generate load control signal, and load control signal increases load parameter or drop to indicate
Low-load parameter, for example the load control signal of motor speed or duty ratio can be increased or decreased.Wherein, voltage sensor 16
Detect motor 40 voltage status during, voltage status include voltage change with time situation and work in voltage
Waveform, processing module 20 can also judge under mutation status according to voltage detection signal as rising edge or failing edge, when for
Prompt can be generated when rising edge reduces the load control signal of load parameter, and it is negative that prompt increase can be generated when for failing edge
Carry the load control signal of parameter.
In some embodiments of the invention, detection module 10 can also include swing speed sensor, and detection signal is also
It may include swing speed detection signal, for example in grass-mowing machine, swing speed sensor can be used for detecting grass-mowing machine and beat the grass
When swing speed and generate swing speed detection signal；Processing module 20 according to the size of swing speed and can generate corresponding
Load control signal, load control signal can indicate according to the needs of actual conditions increase swing speed or reduce swing speed
Degree.
It should be noted that the detection module 10 in above-mentioned each embodiment can be both individually present, it can also be with several realities
The combination of detection module 10 applied in example exists, for example, in a variation according to the present invention, voltage sensor 16 and capacitor
Sensor 11 can combine presence, as a result, not only can be negative to generate according to the lawn detection signal that capacitance sensor 11 generates
Carry control signal, can also during mowing, in conjunction with the motor 40 detected of voltage sensor 16 voltage status (that is, electricity
Pressure changes with time the voltage waveform etc. in situation and the work of motor 40) etc. timely adjust the revolving speed of motor 40.Example again
Such as, in another variation according to the present invention, wheel speed sensors 15 can be 11 groups with voltage sensor 16, capacitance sensor
It closes and exists, thus, it is possible to during mowing, in conjunction with the revolving speed of wheel, the voltage status of motor and the state on lawn etc.,
The running parameter (including motor speed etc.) etc. of motor is controlled in real time.In addition, those skilled in the art are in above-described embodiment
On the basis of can carry out various combinations, change, no longer enumerate one by one herein, these combinations and change should be understood that and belong to this
In the open scope of invention, also it should belong in protection scope of the present invention.
Grass trimmer 100 according to an embodiment of the present invention can be according to the lawn feature detected by rationally designing to it
Information and the status information of grass trimmer intelligently adjust the load parameter of corresponding motor on grass trimmer, realize the intelligence of motor on grass trimmer
It can adjust the speed, improve efficiency, extend single packet time, it is operational to improve personnel.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (19)
1. a kind of electric tool characterized by comprising
Detection module, the detection module are used to detect the feeding parameter of operating condition and/or the electric tool and generate detection letter
Number；
Processing module, the processing module are connect with the detection module, the inspection issued for receiving the detection module
It surveys signal and corresponding load control signal is generated according to the detection signal；
Control module and motor, the control module are connect with the processing module and the motor respectively, for according to
Load control signal adjusts the corresponding load parameter of the motor.
2. electric tool according to claim 1, which is characterized in that the operating condition includes the height and/or density on lawn.
3. electric tool according to claim 1, which is characterized in that the feeding parameter include feed speed and/or into
To dynamics.
4. electric tool according to claim 1, which is characterized in that the load parameter includes motor duty ratio, motor
Output power, motor speed and output torque.
5. electric tool according to claim 1, which is characterized in that the motor includes work head motor or self-powered electricity
Machine.
6. electric tool according to claim 1, which is characterized in that the detection module includes capacitance sensor and described
Detection signal includes lawn detection signal, and the height and/or density that the capacitance sensor is used to detect the grass that cut are simultaneously
Generate the lawn detection signal.
7. electric tool according to claim 6, which is characterized in that the detection module is surveyed by the capacitance sensor
The change frequency of the capacitance obtained obtains the density of the grass.
8. electric tool according to claim 6, which is characterized in that the electric tool includes after being provided with push rod
Portion, and the front opposite with the rear portion, the capacitance sensor are one or more and are mounted on the electric tool
Front.
9. electric tool according to claim 8, which is characterized in that the capacitance sensor is multiple, multiple electricity
Hold sensor front arranged spaced apart in the electric tool in the short transverse of the electric tool.
10. electric tool according to claim 6, which is characterized in that the detection module further includes blade height sensing
Device, the detection signal further include blade height detection signal,
The capacitance sensor detects signal for detecting height careless on lawn and generating the lawn,
The blade height sensor is used to detect the height of the electric tool cutter and generates the blade height detection
Signal,
The processing module detects signal according to the lawn and the blade height detects signal, judges the grass that should be cut away
Height to generate the load control signal.
11. electric tool according to claim 10, which is characterized in that the blade height sensor is Hall switch biography
Sensor.
12. electric tool according to claim 1, which is characterized in that the detection module includes thrust pickup and machine
Body angular transducer, the detection signal include thrust measurement signal and angle detection signal,
The thrust pickup is used to detect the implementation power when electric tool is advanced to generate the thrust measurement signal；
The body angular transducer is used to detect the body angle of the electric tool and generates the angle detection signal,
The processing module generates the load control signal according to the thrust measurement signal and the angle detection signal.
13. electric tool according to claim 12, which is characterized in that the processing module is detected according to the angle to be believed
It number compares with predetermined angle and judges whether there is the gradient, when judgement has the gradient, judged according to the thrust measurement signal
It is upward slope or descending, and calculates the implementation resistance.
14. according to claim 1 to 13 described in any item electric tools, which is characterized in that the detection module includes wheel speed
The sensor and detection signal includes speed detection signal,
The wheel speed sensors are used to detect the wheel rotor speed of the electric tool and generate the speed detection signal,
The speed detection signal is compared with preset velocity amplitude and generates institute the processing module based on the received
Load control signal is stated, the load control signal is to indicate to increase the load parameter or reduce the load parameter.
15. according to claim 1 to 13 described in any item electric tools, which is characterized in that the detection module includes voltage
The sensor and detection signal includes voltage detection signal,
The voltage sensor is used to detect the voltage status of the motor to generate the voltage detection signal,
The processing module generates the load control signal according to the voltage detection signal, the load control signal to
Instruction increases the load parameter or reduces the load parameter.
16. electric tool according to claim 15, which is characterized in that the voltage status includes the change of voltage at any time
Change the voltage waveform in situation and work,
The processing module judges under mutation status according to the voltage detection signal as rising edge or failing edge, when being upper
Rise along when generate prompt and reduce the load control signal of the load parameter, generated when for failing edge described in prompt increase
The load control signal of load parameter.
17. electric tool according to claim 14, which is characterized in that the detection module further include voltage sensor and
The detection signal further includes voltage detection signal,
The voltage sensor is used to detect the voltage status of the motor to generate the voltage detection signal,
The processing module generates the load control signal according to the voltage detection signal, the load control signal to
Instruction increases the load parameter or reduces the load parameter.
18. electric tool according to claim 17, which is characterized in that the voltage status includes the change of voltage at any time
Change the voltage waveform in situation and work,
The processing module judges under mutation status according to the voltage detection signal as rising edge or failing edge, when being upper
Rise along when generate prompt and reduce the load control signal of the load parameter, generated when for failing edge described in prompt increase
The load control signal of load parameter.
19. electric tool according to claim 1, which is characterized in that the detection module includes swing speed sensor,
The detection signal includes swing speed detection signal,
The swing speed sensor is for detecting the swing speed when electric tool is beaten the grass and generating the swing speed
Detect signal；
The processing module generates the load control signal according to the swing speed size, the load control signal to
Instruction increases the swing speed or reduces the swing speed.
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| CN201711482121.4A CN109983907A (en) | 2017-12-29 | 2017-12-29 | Electric tool |
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| CN201711482121.4A CN109983907A (en) | 2017-12-29 | 2017-12-29 | Electric tool |
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