CN106646483A - Electric lifting table initial height recognition method - Google Patents
Electric lifting table initial height recognition method Download PDFInfo
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- CN106646483A CN106646483A CN201611066840.3A CN201611066840A CN106646483A CN 106646483 A CN106646483 A CN 106646483A CN 201611066840 A CN201611066840 A CN 201611066840A CN 106646483 A CN106646483 A CN 106646483A
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- value
- height
- control system
- ultrasonic rangefinder
- electric elevatable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses an electric lifting table initial height recognition method, so as to solve the technical problem that when the existing electric lifting table is subjected to initial height recognition, hidden safety dangers exist and loss of a motor or an electrical appliance element is caused. The scheme for solving the technical problem mainly comprises the following steps: 1, after a control system enters a reset state, a request instruction is sent to an ultrasonic range finder; 2, after the ultrasonic range finder receives the request instruction, ultrasonic waves are emitted to the ground, a height value is generated, and the height value is fed back to the control system; 3, if the control system receives the height value feedback of the ultrasonic range finder in a set time, a detection instruction is sent to the ultrasonic range finder; and 4, after the ultrasonic range finder receives the detection instruction, multiple height testing values are generated, numerical value selection is carried out on the height testing values, and a height detection value is obtained.
Description
Technical field
The invention belongs to lowering or hoisting gear technical field, is related to a kind of elemental height recognition methodss of electric elevatable table.
Background technology
Electric elevatable table is a kind of desk lifted by lifting column, and lifting column is risen by control system
Drop control, and when electric elevatable table carries out descending operation, it is necessary to the height for making control system identification same table current, to guarantee
Lifting column runs in its stroke range.
Prior art electric elevatable table identification elemental height scheme use by same table run to minimum point or
Person's peak, by the initial point that the location position is lifting column, so as to complete the identification of same table elemental height, which
Having the disadvantage that same table must run to one can be by the position of motor stalls, and the position is often in minimum point or highest
, there is potential safety hazard in the objects such as point, the windowsill of cupboard or top for being easy to be pressed onto below desk.In addition, if being to adopt machine
The mode of tool stops motor rotation, and needs make motor rotation blockage in minimum point or peak, and in direct current generator high-speed rotation, dash forward
So stall will be impacted to electrical machinery life, and locked rotor current is bigger than normal also can in itself cause larger harmful effect to motor；
Rotate if adopting and electronically stop motor, need to arrange limit switch in minimum point or peak, so as to cut off electricity
Machine loop, the program in addition to requiring to the limit switch life-span, limit switch cut-out electric motor loop when moment produce electromagnetism
Interference also can produce harmful effect to the electric elements of other on electric elevatable table part.
The content of the invention
The technical problem to be solved is just to provide a kind of elemental height recognition methodss of electric elevatable table, solves
Existing electric elevatable table carries out there is potential safety hazard when elemental height is recognized and motor or electric elements can be caused to be lost
Technical problem.
To solve above-mentioned technical problem, the present invention is adopted the following technical scheme that：A kind of elemental height of electric elevatable table is known
Other method, the control system that the electric elevatable table is provided with ultrasonic rangefinder and is connected with ultrasonic rangefinder is described
Elemental height recognition methodss are comprised the following steps：
Step one, control system is entered after reset state, and to ultrasonic rangefinder request instruction is sent；
Step 2, ultrasonic rangefinder is received after request instruction, earthward launches ultrasound wave, generates height value, and will
Height value feeds back to control system；
Step 3, if control system receives the height value feedback of ultrasonic rangefinder in setting time, to super
Sound radar sends detection instruction；
Step 4, ultrasonic rangefinder is received after detection instruction, generates multiple high measure values, and to high measure value
Numerical value screening is carried out, height detection value is obtained；
Step 5, ultrasonic rangefinder detection current environmental temperature, and according to current environmental temperature, height detection value is entered
Trip temperature is compensated, and obtains elemental height value, and elemental height value is sent to control system；
Step 6, control system is received after elemental height value, and the elemental height of electric elevatable table is configured.
Further, the numerical value screening technique in the step 4 is comprised the following steps：
Step S1：Ultrasonic rangefinder carries out m test, and n ultrasound wave is earthward launched in test every time, generates n survey
Examination value；
Step S2：Ultrasonic rangefinder in every time test, by n test value order from small to large or from big to small
Arranged, filtered maximum and minima, and remaining test value is averaged, obtained meansigma methodss X1、X2…Xm；
Step S3：Ultrasonic rangefinder is by meansigma methodss X1、X2…XmIt is compared, takes intermediate value as height detection value.
Further, the numerical value screening technique in the step 4 is comprised the following steps：
Step S1：Ultrasonic rangefinder carries out m test, generates m test value；
Step S2：Ultrasonic rangefinder averages m test value, obtains height detection value.
Further, after step 2, also include：
Step 7, if control system is not received by the height value feedback of ultrasonic rangefinder in setting time,
Control electric elevatable table is run to minimum point or peak；
Step 8, by the sensor that is arranged on electric elevatable table or limit switch the position of electric elevatable table is obtained
Information, and positional information is sent to control system；
Step 9, control system is received after positional information, and the elemental height of electric elevatable table is configured.
Beneficial effects of the present invention are：
1st, same table of the invention can detect the height of same table in arbitrary height by ultrasonic rangefinder, because
This, when same table is operated, the lifting column in same table no longer needs to run to minimum point or most significant end operator
Into the identification of elemental height so that the running of same table is safer, in addition, the motor of lifting column no longer needs generation
Stall, it is not required that limit switch is set in the minimum point or most significant end of lifting column, therefore, same table carries out elemental height knowledge
Other process does not result in the loss of motor or electric elements；
2nd, due to ultrasonic rangefinder and control system process signal speed quickly, what step one to step 6 was carried out
The elemental height identification process used time is very short, can complete in 1 second, saves the time of elemental height identification, is also beneficial to carry
High Consumer's Experience；
3rd, ultrasonic rangefinder except to height value multiple repairing weld calculate in addition to, spy when propagating in atmosphere for ultrasound wave
Point, also introduces temperature compensation function, makes height detection more accurate；
4th, ultrasonic distance measuring module only carries out follow-up height value detection work after the request instruction for receiving control system
Make, after the elemental height for completing same table is recognized ultrasound wave is just no longer launched, therefore, the energy consumption of elemental height identification process is non-
It is often low.
The particular technique effect of the present invention will be further described in a specific embodiment.
Description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described further：
Fig. 1 is the top view of electric elevatable table in the present invention；
Fig. 2 is the schematic flow sheet one of the elemental height recognition methodss that the embodiment of the present invention one is provided；
Fig. 3 is the schematic flow sheet two of step 4 in the elemental height recognition methodss that the embodiment of the present invention one is provided；
Fig. 4 is the schematic flow sheet three of step 4 in the elemental height recognition methodss that the embodiment of the present invention two is provided；
Fig. 5 is the schematic flow sheet four of the elemental height recognition methodss that the embodiment of the present invention three is provided；
Fig. 6 is the simplified diagram of elemental height recognition methodss of the present invention.
Specific embodiment
The specific embodiment of the present invention is elaborated below in conjunction with the accompanying drawings.
Embodiment one：
As shown in figure 1, a kind of electric elevatable table, including table 1, drive the lifting column 2 of the lifting of table 1 and to lifting
Column 2 carries out the control system of elevating control, and the electric elevatable table is provided with ultrasonic rangefinder 3, ultrasonic rangefinder 3 and control
Single-chip microcomputer is equipped with system processed, ultrasonic rangefinder 3 is connected with control system, refers to the monolithic in ultrasonic rangefinder 3
Machine is communicated with the single-chip microcomputer in control system by communications protocol.In the present embodiment, ultrasonic rangefinder 3 is installed on table
The bottom surface of plate 1, towards bottom surface, ultrasonic rangefinder 3 from test mouth by earthward sending for the test mouth of ultrasonic rangefinder 3
Ultrasound wave simultaneously receives echo, so as to obtain the current level value of same table.
As shown in Fig. 2 the electric elevatable table is directed to, the invention provides a kind of elemental height identification side of electric elevatable table
Method, comprises the following steps：
Step one, control system is entered after reset state, and to ultrasonic rangefinder request instruction is sent；
Step 2, ultrasonic rangefinder is received after request instruction, earthward launches ultrasound wave, generates height value, and will
Height value feeds back to control system；
Step 3, if control system receives the height value feedback of ultrasonic rangefinder in setting time, to super
Sound radar sends detection instruction；
Step 4, ultrasonic rangefinder is received after detection instruction, generates multiple high measure values, and to high measure value
Numerical value screening is carried out, height detection value is obtained；
Step 5, ultrasonic rangefinder detection current environmental temperature, and according to current environmental temperature, height detection value is entered
Trip temperature is compensated, and obtains elemental height value, and elemental height value is sent to control system；
Step 6, control system is received after elemental height value, and the elemental height of electric elevatable table is configured.
In step one, control system enters reset state, refers to electric elevatable table and terminates in a front descending operation
Afterwards, control system will carry out reset operation, wait descending operation next time.
In step 2, ultrasonic rangefinder is received after request instruction, just starts to start work, generates a height value
Control system is fed back to, by step 3, whether control system receives the height value of feedback to judge in setting time
Whether ultrasonic rangefinder connection is normal.If receiving the height value feedback of ultrasonic rangefinder, table in setting time
Show that ultrasonic rangefinder connection is normal, control system can just send detection instruction to ultrasonic rangefinder, so as to execution step
Four and follow-up step, the identification of elemental height is completed by supersonic detector.
After an elemental height identification is completed, ultrasonic rangefinder is only in the case where control system is received for electric elevatable table
After request instruction, just can be again started up, therefore, ultrasonic rangefinder is after an elemental height for completing same table is recognized
Just no longer launch ultrasound wave, also just say that ultrasonic rangefinder enters the standby mode of low-power consumption, can thus make initial height
It is very low that the energy consumption of degree identification process becomes.
In step 4, height detection value is carried out by the single-chip microcomputer in ultrasonic rangefinder by multiple high measure values
Generate after numerical value screening, as shown in figure 3, in the present embodiment, the numerical value screening technique in step 4 is comprised the following steps：
Step S1：Ultrasonic rangefinder carries out m test, and n ultrasound wave is earthward launched in test every time, generates n survey
Examination value；
Step S2：Ultrasonic rangefinder in every time test, by n test value order from small to large or from big to small
Arranged, filtered maximum and minima, and remaining test value is averaged, obtained meansigma methodss X1、X2…Xm；
Step S3：Ultrasonic rangefinder is by meansigma methodss X1、X2…XmIt is compared, takes intermediate value as height detection value.
In step s 2 test value is first passed through and filtered after maximum and minima, then is averaged, and reduces ultrasound
Away from the detection error of device.
The cell mean for obtaining to step S2 in step s3 takes intermediate value, then further reduce ultrasonic rangefinder
Detection error.The median for taking the meansigma methodss that step S2 is obtained that intermediate value refers to wherein is taken in step S3, that is to say, that when flat
When the number of average is odd number, using meansigma methodss are descending or ascending sequence after take a numerical value of middle as
Intermediate value, and the number of meansigma methodss is when being even number, by meansigma methodss are descending or ascending sequence after take middle
The meansigma methodss of two values are used as intermediate value.
As can be seen here, ultrasonic rangefinder generates multiple test values by step S1, then is entered by step S2 and step S3
Row is averaged twice so that ultrasonic rangefinder has very low detection error, so as to improve the initial height of electric elevatable table
Degree accuracy of identification.
Due to the aerial spread speed of ultrasound wave it is affected by temperature, under different ambient temperatures, ultrasound wave
The height value of range finder detection will produce larger error, in order to solve this problem, in step 5, for ultrasound wave in air
The characteristics of during middle propagation, temperature compensation function is also introduced, make height detection more accurate.It is specific that ultrasonic temperature is compensated
Compensation calculation setting is that those skilled in the art know, therefore, in the present embodiment, do not do expansion and repeat.
When same table is operated, electric elevatable table, to step 6, just can make same table to operator by execution step one
In lifting column no longer need operation to minimum point or most significant end completing the identification of elemental height, same table just can be avoided
Article above the article being pressed onto under table 1 or top to table 1 so that the running of same table is safer, in addition,
Same table is carried out during elemental height, and the motor of lifting column no longer needs stall, it is not required that in lifting column
Minimum point or most significant end arrange limit switch, therefore, same table carries out the process of elemental height identification and does not result in motor or electricity
The loss of device element.
Further, since the speed of ultrasonic rangefinder and control system process signal is quickly, electric elements transmission signal
Speed is also very fast, therefore, the elemental height identification process used time that step one to step 6 is carried out is very short, can be in 1 second
Complete, save the time of elemental height identification, be also beneficial to improve Consumer's Experience.
Embodiment two：
As shown in figure 4, present embodiments providing the numerical value screening technique in another kind of step 4, it is comprised the following steps：
Step S1：Ultrasonic rangefinder carries out m test, generates m test value；
Step S2：Ultrasonic rangefinder averages m test value, obtains height detection value.
The numerical value screening technique provided in the present embodiment is with respect to the numerical value screening technique provided in embodiment one, numerical value screening
Processing procedure it is simpler, it is shorter that single-chip microcomputer in ultrasonic rangefinder calculates the spent time, therefore, it is possible to more accelerate
The numerical value screening for completing high measure value of speed obtains height detection value, further shortens the identification of electric elevatable table elemental height
Time.
Embodiment three：
As shown in figure 5, the elemental height recognition methodss of another kind of electric elevatable table are present embodiments provided, including following step
Suddenly：
Step one, control system is entered after reset state, and to ultrasonic rangefinder request instruction is sent；
Step 2, ultrasonic rangefinder is received after request instruction, earthward launches ultrasound wave, generates height value, and will
Height value feeds back to control system；
Step 7, if control system is not received by the height value feedback of ultrasonic rangefinder in setting time,
Control electric elevatable table is run to minimum point or peak；
Step 8, by the sensor that is arranged on electric elevatable table or limit switch the position of electric elevatable table is obtained
Information, and positional information is sent to control system；
Step 9, control system is received after positional information, and the elemental height of electric elevatable table is configured.
In step 7, if the height value that control system is not received by ultrasonic rangefinder in setting time is anti-
Feedback, then it represents that ultrasonic rangefinder malunion is normal, in this case, in order that electric elevatable table can still provide for elemental height
Detection, using on electric elevatable table sensor or limit switch is arranged as mentioned in the background, carry out existing
The usual manner that technology is adopted completes the elemental height identification of electric elevatable table, due in the actually used process of electric elevatable table
In, the less generation of the normal situation of ultrasonic rangefinder malunion, therefore, carry out electric elevatable table using such conventional meanses
Elemental height identification be not result in that motor in electric elevatable table or electric elements produce very lossy and be lost almost can be with
Ignore, but with such an alternative it is possible to when ultrasonic rangefinder malunion is normal, still ensure that electric up-down
Table carries out elemental height identification, and descending operation is carried out then, and is unlikely to shut down electric elevatable table.
For the ease of understanding the implementation process of elemental height recognition methodss of the present invention, it is special provide it is as shown in Figure 6 whole
The outline flowchart of identification process, what electric elevatable table in Fig. 6 entered that initialization identification refers to is exactly that electric elevatable table is entered again
Position state, and when judging that whether normal ultrasonic rangefinder connect in Fig. 6, if control system receive in setting time it is super
The height value feedback of sound radar, then judged result is yes, subsequently just performs the step three in embodiment one to step 6,
If control system is not received by the height value feedback of ultrasonic rangefinder in setting time, judged result is no, choosing
The step of selecting usual manner identification elemental height, that is, perform three kinds of embodiment seven is to step 9.
Preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This
Bright to be not only limited to above example, its concrete structure allows to change, and those skilled in the art can make according to the present invention
Various changes and deformation, without departing from the spirit of the present invention, belong to scope defined in claims of the present invention.
Claims (4)
1. the elemental height recognition methodss of a kind of electric elevatable table, it is characterised in that the electric elevatable table is provided with ultrasound
Away from device and the control system being connected with ultrasonic rangefinder, described elemental height recognition methodss are comprised the following steps：
Step one, control system is entered after reset state, and to ultrasonic rangefinder request instruction is sent；
Step 2, ultrasonic rangefinder is received after request instruction, earthward launches ultrasound wave, generates height value, and will height
Value feeds back to control system；
Step 3, if control system receives the height value feedback of ultrasonic rangefinder in setting time, to ultrasound wave
Range finder sends detection instruction；
Step 4, ultrasonic rangefinder is received after detection instruction, generates multiple high measure values, and high measure value is carried out
Numerical value is screened, and obtains height detection value；
Step 5, ultrasonic rangefinder detection current environmental temperature, and according to current environmental temperature, temperature is carried out to height detection value
Degree compensation, obtains elemental height value, and elemental height value is sent to control system；
Step 6, control system is received after elemental height value, and the elemental height of electric elevatable table is configured.
2. a kind of elemental height recognition methodss of electric elevatable table according to claim 1, it is characterised in that the step
Numerical value screening technique in four is comprised the following steps：
Step S1：Ultrasonic rangefinder carries out m test, and n ultrasound wave is earthward launched in test every time, generates n test value；
Step S2：Ultrasonic rangefinder is carried out n test value order from small to large or from big to small in test every time
Arrangement, filters maximum and minima, and remaining test value is averaged, and obtains meansigma methodss X1、X2…Xm；
Step S3：Ultrasonic rangefinder is by meansigma methodss X1、X2…XmIt is compared, takes intermediate value as height detection value.
3. a kind of elemental height recognition methodss of electric elevatable table according to claim 1, it is characterised in that the step
Numerical value screening technique in four is comprised the following steps：
Step S1：Ultrasonic rangefinder carries out m test, generates m test value；
Step S2：Ultrasonic rangefinder averages m test value, obtains height detection value.
4. a kind of elemental height recognition methodss of the electric elevatable table according to claims 1 to 3 any one, its feature exists
In after step 2, also including：
Step 7, if control system is not received by the height value feedback of ultrasonic rangefinder in setting time, controls
Electric elevatable table is run to minimum point or peak；
Step 8, by the sensor that is arranged on electric elevatable table or limit switch the position letter of electric elevatable table is obtained
Breath, and positional information is sent to control system；
Step 9, control system is received after positional information, and the elemental height of electric elevatable table is configured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611066840.3A CN106646483A (en) | 2016-11-25 | 2016-11-25 | Electric lifting table initial height recognition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611066840.3A CN106646483A (en) | 2016-11-25 | 2016-11-25 | Electric lifting table initial height recognition method |
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| CN106646483A true CN106646483A (en) | 2017-05-10 |
Family
ID=58811856
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611066840.3A Pending CN106646483A (en) | 2016-11-25 | 2016-11-25 | Electric lifting table initial height recognition method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112068458A (en) * | 2020-07-24 | 2020-12-11 | 常州市凯迪电器股份有限公司 | Initialization method of lifting office table |
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| CN105511339A (en) * | 2015-09-30 | 2016-04-20 | 浙江捷昌线性驱动科技股份有限公司 | System and method for setting internal parameters of electric lifting desk |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10325870A (en) * | 1997-05-26 | 1998-12-08 | Suzuki Motor Corp | Ultrasonic range finder |
| CN102135418A (en) * | 2010-12-30 | 2011-07-27 | 陕西科技大学 | Volume measuring device for large bulk stockpile |
| CN104296836A (en) * | 2014-08-22 | 2015-01-21 | 潍坊万德朗汽车电器制造有限公司 | Method for ultrasonic real-time detection of capacity of granary of combined harvester |
| CN104771174A (en) * | 2015-03-13 | 2015-07-15 | 东莞捷荣技术股份有限公司 | Standing posture height measuring device and standing posture height measuring method |
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