CN104090506B - A kind of digital input module of adjustment electronic instrument show value - Google Patents
A kind of digital input module of adjustment electronic instrument show value Download PDFInfo
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- CN104090506B CN104090506B CN201410268743.7A CN201410268743A CN104090506B CN 104090506 B CN104090506 B CN 104090506B CN 201410268743 A CN201410268743 A CN 201410268743A CN 104090506 B CN104090506 B CN 104090506B
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- digital input
- code disk
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Abstract
The invention belongs to digital input module design field, it is related to a kind of digital input module of adjustment electronic instrument show value, digital input module includes photoelectric code disk (1), photoelectric sensing device assembly (2), processor (3) and the interface circuit (4) of drop-over successively.Photoelectric code disk (1) of the present invention produces light pulse signal, the light pulse signal that photoelectric code disk (1) is produced is changed using photoelectric sensing device assembly (2), processor (3) judges photoelectric code disk (1) rotation direction and rotating speed, according to the direction that photoelectric code disk (1) is rotated, realize that matched display indicated value adds deduct operation, the invention hardware interface is easy to connect, accounts for external circuit processor resource few.
Description
Technical field
The invention belongs to digital input module design field, is related to a kind of numeral input mould of adjustment electronic instrument show value
Block.
Background technology
The data adjustment method of electronic instrument digital input module mainly has following several at present：
A kind of is that numerical digit conversion is adjusted with left and right directionkeys, digital by keyboard with reference to the layout type of computer small keyboard
Directly key in；Have that TIP button is more, numerical digit switching is inconvenient, the problem of button Long-Time Service easily failure.
It is for second the input mode using four direction key, left and right directions key adjusts numerical digit to be changed, on or below
Often pressing to key once carries out plus or minus one operation in current numerical digit；Exist TIP button many, input operation efficiency is low asks
Topic.
The third is to add rotary encoder to constitute using right and left key, adjusts numerical digit with right and left key, and encoder knob is clockwise
Or turning a step counterclockwise, current digit number executes plus or minus one operation；There is numerical digit switching inconvenience, button Long-Time Service easy
The problem of failure.
4th kind is encoder using belt switch, presses encoder rotary shaft once, and numerical digit counterclockwise advances one
Position, if current numerical digit adjustment symbol automatic jumps to the lowest order digit of display, then presses rotation in display highest order
Axle, numerical digit continue to change counterclockwise, execute circulate operation, and in current numerical digit, turn clockwise one step of encoder, digit number
Plus 1, otherwise subtract 1.There is a problem of that input operation efficiency is low.
To sum up, the data adjustment method of Current electronic instrument input module has that TIP button is more, numerical digit switches not
Convenient, input operation efficiency is low, the problem of button easily failure, needs to improve.
Content of the invention
The technical problem to be solved in the present invention be existing electronic instrument digital input module TIP button is more, numerical digit
The inconvenient problem of switching.
The present invention provides a kind of digital input module of adjustment electronic instrument show value, the digital input module structure letter
Single, very easy to use.
Digital input module of the present invention includes the photoelectric code disk of drop-over, photoelectric sensing device assembly, processor and interface successively
Circuit；Wherein；
The light pulse signal that photoelectric code disk is produced is converted into electric impulse signal to processor by photoelectric sensing device assembly；
Processor according to the electric impulse signal and phase place that receive judge in the unit interval rotation direction of photoelectric code disk and
Rotating speed, produces three kinds of output signals：
Add-subtract control signal is produced according to the rotation direction of photoelectric code disk；
The light pulse signal number that photoelectric code disk is produced in unit interval falls into different pulses intervals, in different carry-out bits
Upper generation counting pulse signal；
Effective counting pulse signal is produced in one digit's time, then produce interrupt signal；
Interface circuit is shown to the instrument for connecting by the driving chip inside interface circuit according to output signal is received
Device carries out digital adjustment：
When plus count signal suddenly become to subtract count signal or subtract count signal and suddenly become plus count signal, i.e. photoelectricity
Code-disc rotation direction changes, and now, the pulse counter in module resets, and starts the step-by-step counting of new direction；
The counting pulse signal that module is exported is distributed to each numerical digit of instrument display, the numeral in specific digits is held
Row plus or minus one is operated；
Interrupt signal interrupts instrument display current operation, receives the numeral input of digital input module, changes an instrument
Numerical indication values in device display numerical digit.
Further, the photoelectric code disk is photoelectricity delta pulse code-disc, and it is orthogonal that photoelectricity delta pulse code-disc exports A, B two-phase
Light pulse signal.
The light pulse signal that the present invention is produced according to photoelectric code disk by processor, judge the rotation direction of photoelectric code disk with
Rotating speed, so as to realize the numeral adjustment of instrument display, compared to prior art, the structure of the present invention greatly reduces, using very
Few device, you can solve the technical problem that existing labyrinth is realized.
Description of the drawings
Fig. 1 is the frame diagram of digital input module of the present invention；
Fig. 2 this using invention carry out data point reuse flow chart
The outer package figure of Fig. 3 digital input modules of the present invention；
Fig. 4 is the cut-away view of digital input module of the present invention；
Fig. 5 is the side view of the cut-away view of digital input module of the present invention；
Fig. 6 is the sequential chart of the photoelectric sensing device assembly output electric pulse signal of digital input module of the present invention；
Fig. 7 is the applicating example schematic diagram of digital input module of the present invention；
Fig. 8 is the main program block diagram of digital input module of the present invention；
Fig. 9 is the interrupt service routine block diagram of single-chip microcomputer input mouth of the present invention；
Figure 10 is single-chip microcomputer 500ms Interruptions service routine block diagram of the present invention；
Applicating example interrupt service routine block diagram when Figure 11 is for processing digital input module interruption of the present invention；
Addition subprogram block diagrams of the Figure 12 for applicating example；
Subtraction subprogram block diagrams of the Figure 13 for applicating example.
1- photoelectric code disks, 2- photoelectric sensing device assemblies, 3- processors, 4- interface circuits, 5- instrument displays, 6- modules turn
Axle, 7- wiring boards, 8- shells.
Specific embodiment
First, structure of the invention
With reference to Fig. 1, Fig. 2, a kind of digital input module of adjustment electronic instrument show value, including the photoelectric code of drop-over successively
Disk 1, photoelectric sensing device assembly 2, processor 3 and interface circuit 4；
Photoelectric code disk 1 produces light pulse signal；The light pulse signal that photoelectric code disk 1 is produced by photoelectric sensing device assembly 2 turns
Change the electric impulse signal for meeting 3 needs of processor into；
Processor 3 according to the electric impulse signal and phase place that receive judge in the unit interval rotation direction of photoelectric code disk and
Rotating speed, produces output signal, and output signal has three types：
The first is add-subtract control signal, produces different add-subtract control signals according to the rotation direction of photoelectric code disk 1：Light
Produce plus count signal when code disc 1 is rotated clockwise, produce when photoelectric code disk 1 is rotated counterclockwise and subtract count signal；
It is for second counting pulse signal, the rotating speed of photoelectric code disk 1 is different, the light that photoelectric code disk 1 is produced in the unit interval
Pulse signal number falls into different pulses intervals, produces different counting pulse signals；
The third is interrupt signal, produces effective counting pulse signal and then produce interruption letter in digit's time
Number；
Interface circuit 4 is shown to the instrument for connecting by the driving chip inside interface circuit 4 according to output signal is received
Show that device 5 carries out digital adjustment：
Plus count signal is executed to 5 specific digits of instrument display plus is counted, and subtracts count signal specific to instrument display 5
Numerical digit is executed and subtracts counting；
Suddenly become plus count signal when adding count signal to suddenly become to subtract count signal or subtract count signal, photoelectricity is described
1 rotation direction of code-disc changes, and now, the pulse counter in module resets, and starts the step-by-step counting of new direction；
Counting pulse signal executes plus or minus one operation to the numeral in its 5 specific digits of corresponding instrument display；
Interrupt signal interrupts 5 current operation of instrument display, receives the numeral input of digital input module, changes an instrument
Numerical indication values in device display 5 certain numerical digit.
Further, with reference to Fig. 3, Fig. 4 and Fig. 5, photoelectric code disk 1 is rotatably connected in module by the knob inside photoelectric code disk 1 and turns
On axle 6, when module rotating shaft 6 is rotated, light pulse signal is produced by the penetrating of photoelectric code disk 1 with characteristic is blocked；
Photoelectric code disk 1 is in harmony into the gap to a photoelectric sensing device assembly 2, photoelectric sensing device assembly 2 and processor 3, connects
Mouth circuit 4 is welded on one piece of wiring board 7；
Interface circuit 4 realizes the adjustment of 5 numeral of instrument display by output cable external equipment display；
Above-mentioned each components and parts fastening is encapsulated with a shell 8.
Can be seen that in Fig. 5, module rotating shaft 6 is independent, and photoelectric sensing device assembly 2 is contactless.So as to module rotating shaft 6 rotates spirit
Living, easy to operate, and little, long service life of wearing and tearing.
2nd, the numeral adjustment principle of digital input module is specifically described below.
Photoelectric code disk of the present invention 1 selects photoelectricity delta pulse code-disc (hereinafter referred to as code-disc), photoelectricity delta pulse code-disc
Resolution ratio is 600P/r (pulse per turn), the orthogonal light pulse signal of photoelectricity delta pulse code-disc output A, B two-phase (hereinafter referred to as arteries and veins
Punching)；Processor 3 is single-chip microcomputer.
The normality signal of count pulse output line is high level pulse, and useful signal is negative pulse, and pulse width is
200ms；It is high level to interrupt application signal normality, exports negative pulse when having interruption, and pulse width is 10ms.
The output interface of module totally 18 cables, 1 power line for digital input module, 1 is common ground, 1
Root is housing shroud line；1 is root add drop holding wire, and 1 is interrupt signal line, and 13 is holding wire, i.e. count pulse output
Line.
In conjunction with table 1, single-chip microcomputer is counted to the pulse that photoelectricity delta pulse code-disc is exported with 500ms as chronomere,
If photoelectricity delta pulse code-disc rotation direction changes in counting process, from that time is changed, give up automatically original counting
Value, restarts to count.Digital input module with 50 pulses as interval steps, when 500ms inside counting umber of pulses (P) is less than 10
When individual, processor is not responding to, and instrument display is unchanged；When the photoelectricity delta pulse code-disc that turns clockwise in 500ms, arteries and veins is counted
Number (P) is rushed more than during 10 pulses, the interval that processor is fallen into according to pulse number exports a pulsewidth in corresponding holding wire
200ms counts negative pulse, while interrupt signal line produces a 10ms negative pulse interrupt signal, the high electricity of add drop holding wire output
Flat, count so as to the numerical value execution of instrument display Jia 1.If rotate counterclockwise photoelectricity delta pulse code-disc in 500ms, reaching has
During effect umber of pulse, and the counting negative pulse in corresponding holding wire generation pulsewidth 200ms, it is negative that interrupt signal line produces a 10ms
Pulse interrupt, then the numerical value of instrument display execute the counting that subtracts 1.
Each holding wire output pulse is as shown in table 1 with the relation of code-disc velocity of rotation.
1 each holding wire of table output pulse and photoelectricity delta pulse code-disc velocity of rotation relation
Because the rotation of photoelectricity delta pulse code-disc is turned around, the umber of pulse of generation is 600, as P ＞ 600, represents photoelectricity
Delta pulse code-disc rotates over one week.While the time interval step-length of digital input module, and respectively export in the unit interval
The corresponding holding wire of the number of pulse is all artificial regulation, can be changed according to actual conditions.
It is further explained below：
Such as instrument display need to show four figures value, the frequency that numerical digit changes be followed successively by ten, hundred, kilobit, individual position.
Because tens operation is most frequent, 3,4,5,6,7 five holding wires can be connected together.Photoelectricity delta pulse code-disc rotary speed is only
Enable the umber of pulse produced in the 500ms times fall into 101 to 350 pulses pulse interval, ten digit value execute plus 1 or
The operation that subtracts 1, the interval have used 250 pulses that digital input module is exported.8,9,10,11 4 holding wires are connected on one
Rise, as long as photoelectricity delta pulse code-disc rotary speed enables the umber of pulse produced in the 500ms times to fall into 351 to 550 pulses
Pulse interval, hundreds value executes plus or minus one operation, 200 arteries and veins that hundred intervals have used digital input module to export
Punching.12,13 holding wires are connected together, as long as photoelectricity delta pulse code-disc rotary speed makes the pulse produced in the 500ms times
More than during 550 pulses, kilobit numerical value executes plus or minus one operation to number.1,2 holding wires are connected together, photoelectricity delta pulse code
As long as disc spin speed enables the umber of pulse produced in the 500ms times to fall into the pulse interval of 11 to 100 pulses, units value
Execute plus or minus one operation.Wherein, which root holding wire certain bit corresponding, can be adjusted according to actual conditions and advise
Fixed, it is not limited to which that regulation described above, example described above are a more commonly used embodiment.
Output signal is sent with " OC " door output hex inverter, so as to digital input module of the present invention is applied to various power supplies
The external circuitses of voltage.
As digital input module is counted to photoelectric code disk with 500ms as chronomere, instrument display numerical digit changes speed
Rate is low, and each second, numerical digit numerical values recited only increasedd or decreased " 2 ".Will not saltus step, safe and reliable.
As shown in fig. 6, photoelectricity delta pulse code-disc rotates a circle, A, B two-phase respectively produces 600 pulses.Turn when clockwise
When dynamic, top half of the waveform for Fig. 6；In the rising edge of A sequences, B sequences are high level, 90 degree of the advanced A sequences of B sequences.When
When rotating counterclockwise, the latter half of the waveform for Fig. 6；In the rising edge of A sequences, B sequences are in low level.According to this rule
Rule, can determine that photoelectricity delta pulse code-disc is rotated clockwise or rotated counterclockwise.
With reference to Fig. 7, the instrument display of external circuitses totally three digit.If the instrument display need to frequently adjust tens
The probability that value, hundreds value and units value are adjusted is less.During dispense-pulse, ten digit value distribution is most, totally 300 pulses；
Totally 190 pulses of units value.Holding wire be assigned as units value using 1-4 holding wires (totally 4,4 × 50=200 pulse,
Deduct disturbing pulse during 10 anti-module shaft vibrations, effective impulse totally 190), photoelectricity delta pulse code-disc in the 500ms
When rotating speed is more than 10 pulses and is less than 201 pulses, low level numerical value plus or minus one；Ten digit value is using 5-10 lines (totally 6
Root, 6 × 50=300 pulse), photoelectricity delta pulse code-disc rotating speed more than 200 pulses and is less than 501 arteries and veins in the 500ms
When rushing, ten digit value plus or minus one；Hundreds value uses 11-13 lines, as long as the rotating speed of delta pulse code-disc is big in the 500ms
When 500 pulses, hundreds value plus or minus one.The connected mode of each holding wire is as shown in Figure 7.14th line is numeral input
The interrupt signal line of module output, the timing interrupts that output module sends carry out numerical monitor adjustment operation after interruption.The
15 lines are add drop holding wire, adjust for instrument display digital addition and subtraction and use.16th line is powered for digital input module
Power line, there is provided the voltage of digital input module internal circuit normal work.17th line is common ground.
For convenience of describing, below with " module " replacement " digital input module ", units value abbreviation low level, ten digit value letter
Claim middle position, hundreds value is referred to as high-order.
The referral procedure block diagram of the more commonly used application program, wherein single-chip microcomputer model are given below in conjunction with the accompanying drawings
Atmega8L-8AI, has five kinds of park modes, respectively idle (Idle), ADC noise reductions (ADC Noise Reduction),
Power down (Power-down), power saving (Power-save), wait (Standby).With reference to Fig. 8, because functions of modules single, single-chip microcomputer
Often in idle condition, program adopts " power down park mode ".System boot or after resetting, main program starts, system and place
Reason device port and internal register initialization, start the watchdog function of anti-system crash, reset WatchDog Timer.In opening
Disconnected, processor begins to respond to external interrupt signal, and system enters power down park mode, waits code-disc A train pulses to arrive.
When idle, house dog wake-up CPU per second once, makes main program restart one time.During normal work, due to the 500ms times
" house dog counter O reset instructs (WDR) " is inside performed a plurality of times, makes house dog not affect the normal operation of system program.Main program
During idle or program exception, the application of automatic method for restarting, makes never to crash during module hardware normal work, improves the present invention
Reliability.
With reference to Fig. 9, after in single-chip microcomputer is by Fig. 6, the rising edge of A train pulses is triggered, system enters interrupt mode, executes
Port interrupts service routine.The Central Shanxi Plain is broken first, forbids that other interrupt source work, single-chip microcomputer stop response external interrupt signal, protects
Shield program breakpoint, keeps the scene intact；House dog counter O reset, forbids house dog action.The rising edge of A sequences sentences " B in figure 6
Sequence level ", is such as " 1 ", i.e. high level, and code-disc turns clockwise, programming jump S1.If " B sequence levels " is " 0 ", i.e.,
Low level, code-disc rotate counterclockwise, turns S2.
S1：Judge " plus the count flag " of single-chip microcomputer inner setting, such as illustrate that code-disc persistently turns clockwise for " 1 ", jump
Turn S3.Otherwise illustrate that code-disc just starts to turn clockwise, redirect S6.
S2：Judge " the subtracting count flag " of single-chip microcomputer inner setting, such as illustrate that code-disc continues rotate counterclockwise for " 1 ", jump
Turn S3.Otherwise " subtracting count flag for 0 ", illustrates that code-disc just starts rotate counterclockwise, redirects S4.
S3：" port pulse (the i.e. code-disc electric pulse) counter " arranged in single-chip microcomputer adds " 1 ", and interrupt service routine is executed
" restoring scene, recovery breakpoint " operation, opens interruption, and single-chip microcomputer begins to respond to external interrupt signal, and this interruption service execution is complete
Finish.
S4：Program by " subtracting count flag " set of single-chip microcomputer inner setting, while by single-chip microcomputer inner setting " plus
Count flag " is clear " 0 ", programming jump S5.
S5：" port pulse (the i.e. code-disc electric pulse) counter " arranged in single-chip microcomputer resets, and arranges in single-chip microcomputer
" 500ms timers are assigned initial value and started ", programming jump S3.
S6：Program by " plus count flag " set of single-chip microcomputer inner setting, while " subtracting single-chip microcomputer inner setting
Count flag " is clear " 0 ", programming jump S5.
Figure 10 is single-chip microcomputer 500ms Interruption service routine block diagrams, and it is detection photoelectricity delta pulse code-disc which acts on
Velocity of rotation, and by testing result be embodied in module output holding wire on, by interrupt mode with application this module external
Circuit is connected.
When 500ms timings then, program performing " Interruption service routine ".The Central Shanxi Plain is broken first, forbids in other
Disconnected source work, defence program breakpoint keep the scene intact；House dog counter O reset, forbids house dog action.If inside single-chip microcomputer
" port pulse (the i.e. code-disc electric pulse) counter " numerical value for arranging is less than 10, and module is considered that interference signal, program are directly held
Row executes S12.Otherwise, judge " plus the count flag " of single-chip microcomputer inner setting, such as S8 is redirected for " 1 "；Otherwise redirect S7.
S7：Judge " the subtracting count flag " of single-chip microcomputer inner setting, such as S9 is redirected for " 1 "；Otherwise redirect S10.
S8：" add drop control line " signal level in set module output cable, redirects S11.
S9：" add drop control line " signal level in module output cable is dragged down, S11 is redirected.
S10：Specification module attonity or single-chip microcomputer internal storage device data perturbation within the past 500ms times,
Module main program automatically resets and restarts, it is ensured that module is in normal operating conditions all the time.This measure can make module code-disc without
In the case of action, automatically reset within 1 second 2 times.It is to work in adverse circumstances, it is also possible to accomplish that module itself never crashes.
S11：" port pulse (the i.e. code-disc electric pulse) counter " arranged inside single-chip microcomputer divided by round numbers after 50 and adds
1, obtain the holding wire sequence number for needing that 200ms negative pulses are sent in module output cable；On calculated holding wire
The negative pulse of a 200ms width is produced, and on the interrupt signal line in module output cable, sends the interruption of 20ms
Signal, executes S12.
S12：" port pulse (the i.e. code-disc electric pulse) counter " arranged inside single-chip microcomputer clearly " 0 ", is set inside single-chip microcomputer
Fixed " plus count flag " " 0 " clearly, while " the subtracting count flag " of single-chip microcomputer inner setting is also clear " 0 "；Interrupt service routine is held
Row " restoring scene, recovery breakpoint " operation, opens interruption, and single-chip microcomputer begins to respond to external interrupt signal, this Interruption service
It is finished.
Referral procedure block diagram when further Figure 11, Figure 12, Figure 13 are the instrument integration module, for using the numeral input
Refer to during module research and development instrument.
Figure 11 is interrupt service routine block diagram when processing the modules interrupts, has no progeny in " external circuitses " respond module, right
The processing mode of module output signal.In figure, in the case that low level and median signal are all invalid, program continues to judge high-order letter
Number state, and high operation is not directly executed, improve the reliability of interrupt signal.
Figure 12 is addition subprogram block diagram, can realize that carry adjustment, i.e. low level meter are high compared with oneself numerical digit from trend after full
Carry, realizes high-order fine adjustment function.
Figure 13 is subtraction subprogram block diagram, when low level reduces to 0, the position that do not affect numerical digit high.When a high position has been 0 execution
During the operation that subtracts 1, will all reset compared with low all numerical digits automatically, the very convenient input operation for carrying out setting.For example need
Current display numeral on instrument display all being reset, only module rotating shaft being rotated counterclockwise with high speed, moment can be complete
Into.
The present invention produces light pulse signal according to photoelectric code disk 1, photoelectric code disk 1 is produced using photoelectric sensing device assembly 2
Light pulse signal processed, processor judges 1 rotation direction of photoelectric code disk and rotating speed, according to photoelectric code disk 1 rotate side
To realizing that external equipment display adds deduct operation, according to the rotating speed of 1 rotation direction of photoelectric code disk, it is achieved that external equipment shows
Show the adjustment of device numeral, structure is very simple and practical, use beneficial to spread.
Above-described specific descriptions, have been described in detail to the purpose of the present invention, technical scheme and beneficial effect, institute
It should be understood that the foregoing is only the specific embodiment of the present invention, the protection domain being not intended to limit the present invention is all
Within the spirit and principle of the present invention, any modification, equivalent substitution and improvements that is done etc. should be included in the guarantor of the present invention
Within the scope of shield.
Claims (1)
1. a kind of digital input module of adjustment electronic instrument show value, is characterized in that, module includes the photoelectric code of drop-over successively
Disk (1), photoelectric sensing device assembly (2), processor (3) and interface circuit (4)；Wherein；
The light pulse signal that photoelectric code disk (1) is produced is converted into electric impulse signal to processor by photoelectric sensing device assembly (2)
(3)；
Processor judges the rotation direction of photoelectric code disk in the unit interval (1) according to the electric impulse signal and phase place that receive and turns
Speed, produces three kinds of output signals：
Add-subtract control signal is produced according to the rotation direction of photoelectric code disk (1)；
The light pulse signal number that photoelectric code disk (1) is produced in unit interval falls into different pulses intervals, in different carry-out bits
Upper generation counting pulse signal；
Effective counting pulse signal is produced in one digit's time, then produce interrupt signal；
Interface circuit (4) is shown to the instrument for connecting by the internal driving chip of interface circuit (4) according to output signal is received
Show that device (5) carries out digital adjustment：
Photoelectric code disk (1) rotation direction changes, and now, the pulse counter in module resets, and starts the step-by-step counting of new direction；
The counting pulse signal that digital input module is exported is distributed to each numerical digit of instrument display (5), in specific digits
Numeral execute plus or minus one operation；
Interrupt signal interrupts instrument display (5) current operation, receives the numeral input of digital input module, changes an instrument
Numerical indication values in display (5) certain numerical digit；
The resolution ratio of photoelectric code disk (1) is 600P/r, exports the orthogonal light pulse signal of A, B two-phase；
Module exports 18 cables, and wherein, 13 is holding wire, and output signal " OC " door output, digital input module are fitted
External circuitses for various supply voltages；
Which root holding wire of module output corresponds to certain bit, can be adjusted according to actual conditions and be specified, holding wire
Sequential combination is wanted during combination；
Digital input module is counted to photoelectric code disk with 500ms as chronomere, and instrument display numerical digit change speed is low, per second
Clock numerical digit numerical values recited only increaseds or decreases " 2 ".
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107733427B (en) * | 2017-11-13 | 2023-12-26 | 新疆广陆能源科技股份有限公司 | Electronic digital display meter and ram blowout preventer |
| CN108710091B (en) * | 2018-05-03 | 2024-03-22 | 华中农业大学 | Input adjusting assembly and solenoid magnetic field measurement experiment instrument comprising same |
| CN109375039B (en) * | 2018-11-30 | 2024-04-16 | 江苏永钢集团有限公司 | Quick line calibrating device for photoelectric sensor |
| CN111694296A (en) * | 2019-03-13 | 2020-09-22 | 宁波方太厨具有限公司 | Intelligent knob adjusting device and adjusting method thereof |
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