CN104457810B - Double-display micrometer gauge and micrometer gauge pointer display control method - Google Patents
Double-display micrometer gauge and micrometer gauge pointer display control method Download PDFInfo
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- CN104457810B CN104457810B CN201410715302.7A CN201410715302A CN104457810B CN 104457810 B CN104457810 B CN 104457810B CN 201410715302 A CN201410715302 A CN 201410715302A CN 104457810 B CN104457810 B CN 104457810B
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 230000009977 dual effect Effects 0.000 claims description 30
- 238000005259 measurement Methods 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The invention discloses a double-display micrometer gauge and a micrometer gauge pointer display control method. The double-display micrometer gauge comprises a sensor module, an A/D conversion chip module, a microprocessor control module, a liquid crystal display module and a pointer display module. The pointer display module comprises a pointer drive module, an angle sensor module and a pointer module. The double-display micrometer gauge can convert a 4-20 mA electrical signal output by a sensor into pointer display and liquid crystal display through an A/D conversion chip. Meanwhile, an angle sensor and the microprocessor control module and the pointer drive module form closed loop design, the position of a pointer is fed back to a microprocessor in real time through the angle sensor, and the correct indicating position of the pointer is adjusted through the pointer drive module to prevent pointer non-synchronization or pointer notoscale and the like. The double-display micrometer gauge and the micrometer gauge pointer display control method have the advantages that precise measuring and flexible operation are guaranteed due to digital display, precise display under the critical state is guaranteed through analog display, and the double-display micrometer gauge is easy to read.
Description
Technical field
The present invention relates to instrument field, more particularly to a kind of thousand points of instrument of modified dual display and its pointer show
Control method.
Background technology
In Industry Control, the display information overwhelming majority that operating personnel obtain relies on vision, display instrument refer generally to by
The signal for being measured is transformed into the device of the display information for being easy to people to observe.Display instrument directly receive detecting element and
The output signal of transmitter or sensor, continuously shows, the situation of change of each measured parameter in record production process.According to
The difference of display mode, display instrument is usually the detection that the sensors such as temperature, pressure, flow, thing position and mechanical quantity are sent
Amount pointer or numeral are indicated.The display format of instrument is main by two kinds, and one kind is pointer-type, and another kind is numeral
Formula, they respectively have advantage and disadvantage.Pointer header is very clear to being instructed to the variation tendency of parameter, but its shock resistance compared with
Difference, machinery inertial is big, and the powerless reaction of comparatively fast change to parameter, reading is inaccurate；Although digital gauge outfit reading is directly perceived, essence
Really, but it is but unable to the variation tendency of display parameters, particularly in industry spot multi-parameter, when many gauge outfits show, it more difficult to distinguish
Bright which parameter is increasing, and which parameter is reducing.Based on the two respective advantage and disadvantage, technical staff also attempted aobvious by two kinds
The mode of showing is united two into one, but the A/D conversion chips of the motor and liquid crystal display due to driving pointer can be interfered, so very
Difficulty accomplishes dual display.And, that is, allow to realize dual display function, cannot also accomplish control in real time for the position of pointer, only
It is to send pulse signal by single-chip microcomputer to drive pointer, a pulse signal to make a move, the position of pointer is determined by pedometer
Put.But this method is actual simply to have recorded single-chip microcomputer have issued how many pulse, occur surprisingly, being easy for out when operation
Existing pointer loses the situation outside step or no to scale, and the signified scale of pointer is just not pair or pointer cannot return to zero point.
The content of the invention
The invention provides the control method that a kind of thousand points of instrument of dual display and its pointer show, can solve the problem that above-mentioned existing
Cannot realize that dual display and pointer lose the defects such as step or no to scale present in technology.
The purpose of the present invention is achieved through the following technical solutions：
A kind of thousand points of instrument of dual display, including：Sensor assembly, A/D conversion chips module, microprocessor control module,
LCD MODULE and pointer display module；The sensor assembly is connected with A/D conversion chip modules, A/D conversion chip moulds
Block is connected with microprocessor control module；The LCD MODULE and the pointer display module respectively with the microprocessor
Control module is connected；It is described and the pointer display module includes pointer drive module, angle-sensor module and pointer module
Pointer module is connected with the pointer drive module, and the pointer drive module is connected with the microprocessor control module, and
The angle-sensor module links together with the pointer drive module.
Further, also including LED module, the LED module includes LED and switch key, and LED
All it is connected in microprocessor control module with switch key.
Further, the LCD MODULE includes liquid crystal screen module and function button module；The liquid crystal screen module
It is connected with microprocessor control module；The function button module is connected with microprocessor control module.
Meanwhile, thousand points of externally fed voltages of instrument of dual display numeral of the present invention are 24V；And the power supply of the control chip
Voltage is 5V.
Further, the angle-sensor module is co-axially mounted with pointer drive module；And angular transducer is 360 degree
Full monitoring, from 0 degree to 360 degree, corresponding voltage signal is 0.5V to 4.5V.
The control method that a kind of thousand points of gauge pointers of dual display show, comprises the following steps：
Angular transducer Real-time Feedback pointer position, and positional information is sent to microprocessor control module；
Microprocessor control module compares the positional information with the real measured data at the moment, is compensated value, and will
Offset is sent to pointer drive module；
Pointer drive module drives hand motion to specified location according to offset.
The 4-20mA electric signals that thousand points of instrument of dual display of the present invention can export sensor, are turned by A/D conversion chips
Pointer is turned to show and liquid crystal display；Meanwhile, angular transducer is formed with microprocessor control module and pointer drive module and closed
Ring design, by angular transducer to microprocessor Real-time Feedback pointer position, and is adjusting pointer just by pointer drive module
True indicating positions, situations such as preventing pointer and lose step or pointer no to scale.It is aobvious the beneficial effects of the present invention are numeral
Show and ensure that accurate measurement and operate flexibly, simulative display ensure that accurate display under critical conditions and simple readability.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings；
Fig. 1 is thousand points of control principle drawings of instrument of dual display in the embodiment of the present invention；
Fig. 2 is dual display thousand points of mechanical profiles of instrument of numeral of offer in the embodiment of the present invention；
Fig. 3 is dual display thousand points of general assembly drawings of instrument of numeral of offer in the embodiment of the present invention.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
At present, the existing instrument of in the market is mostly that only pointer shows or only liquid crystal display, mainly due to finger
Pin show in drive pointer motor and liquid crystal display in A/D conversion chips can interfere, it is difficult to accomplish dual display.Market
On also there is the display instrument of some pointers and digital dual display, but the position of pointer cannot in real time be controlled, Er Qie
There is the problem that pointer is lost control of in practical process, also pointer no to scale or return exists less than the situation of zero point.
The present invention is a kind of thousand points of instrument of dual display, the 4-20mA electric signals of input can be converted into pointer scale and shown
With LCDs numerical monitor, for actual measured value, pointer is consistent with the show value of liquid crystal display and synchronously changes.As schemed
It is thousand points of control principle drawings of instrument 101 of dual display in the embodiment of the present invention shown in 1, including：Sensor assembly 102, A/D turns
Change chip module 103, microprocessor control module 104, LCD MODULE 105 and pointer display module 106；The sensing
Device module 102 is connected with A/D conversion chips module 103, and A/D conversion chips module 103 connects with microprocessor control module 104
Connect；LCD MODULE 105 and pointer display module 106 are all connected with microprocessor control module 104；And the pointer shows
Module 106 include pointer drive module 109, angle-sensor module 110 and pointer module 111, the pointer module 111 with
Pointer drive module 109 is connected, and pointer drive module 109 is connected with microprocessor control module 104, and the angular transducer
Module 110 links together with pointer drive module 109；The LCD MODULE 105 includes liquid crystal screen module 107 and function
Key-press module 108；The liquid crystal screen module 107 is connected with microprocessor control module 104；The function button module 108 with
Microprocessor control module 104 is connected.
Technical barrier solved by the invention is mainly realized by following with technical scheme：First, for analog-to-digital conversion
The precision of A/D conversion chips 103 directly determines the stability of numerical monitor, in the present embodiment, chooses ADS1232 as reception
Sensor signal, is converted to digital data transmission to microprocessor control module 104；And the precision of analog-to-digital conversion is depended on again
The clean level of power supply, therefore the filter circuit of power supply rear end is extremely important, electromagnetism interference, filtering out as far as possible
The ripple of power input.Secondly when pointer drive module 109 drives pointer 111 to rotate, pointer drive module 109 can be to modulus
Conversion accuracy is impacted, and causes the digital saltus step of liquid crystal display, therefore to do a time delay to motor-driven order, i.e., first
The numerical value of measurement in real time is shown on liquid crystal screen module 107, then drives pointer to go to corresponding scale (due to the number of liquid crystal display
Value changes so this time delay naked eyes are not felt, but can solve the problems, such as that motor is disturbed quickly).The system
The course of work is as follows：
The signal of the input of instrument is the current signal of 4-20mA, and we are on the pin of A/D conversion chips 103 and connect one
Individual high precision sampling resistance, such curent change can change into voltage change, and be converted into number by the collection of A/D conversion chips 103
Word signal transmission is to single-chip microcomputer.Then we have done a circulation in program, and single-chip microcomputer takes 10 sample magnitudes and is averaged so
Afterwards by being displayed in after conversion on liquid crystal screen module 107, data signal is converted into finger again after liquid crystal display display numerical stability
The angle of deflection needed for pin carrys out motor operation, and (whether indicator walks in place angled sensor after waiting pointer to walk in place
110 monitorings), microprocessor control module 104 is sampled again, then carries out flow as above.So liquid crystal screen module 107 and refer to
The operation of pin drive module 109 is separate work, and microprocessor control module 104 is to complete moment from liquid crystal display is sampled
, and pointer drive module 109 runs to that to complete time for typically being spent be also Millisecond, therefore do not influence normally to make
With also can guarantee that liquid crystal display numerical stability.
The design of pointer display module 106 of the prior art, has what pointer lost control of to ask during instrument use
Topic, is exactly that using after a period of time, the sensing of pointer and actual value are than having skew to a certain extent, or even also have and exceed
Range returns the situation less than zero point.This be because the design of pointer display module is open-loop design, that is, can only to drive table
The motor hair pulse of pin, acquiescence 20 pulses of hair are exactly that motor rotates 20 steps, but real electrical machinery has walked how many step neither ones
Real-time Feedback, so the running status of indicator is uncontrollable.
For the pointer display module in thousand points of instrument of dual display, invention introduces angular transducer 110, and angle
Sensor 110 forms closed loop design, angular transducer 110 and finger with microprocessor control module 104 and pointer drive module 109
Pin drive module 109 is coaxial, and such indicator has walked how many degree, and our energy real-time perception of angular transducer 110 simultaneously will letter
Number feed back to microprocessor control module 104；Referred to the Real-time Feedback of microprocessor control module 104 by angular transducer 110
The position of pin 111, and the correct indicating positions of pointer 111 is adjusted by pointer drive module 109, prevent pointer and lose step or refer to
Situations such as pin no to scale.
Specific work process on pointer display module is as described below：
First, the position of 110 Real-time Feedback pointer of angular transducer 111, and positional information is sent to microprocessor control
Module 104；
Secondly, microprocessor control module 104 compares the positional information with the real measured data at the moment, is compensated
Value, and offset is sent to pointer drive module 109.Real measured data mentioned here, can be by dual display of the present invention thousand
Divide in instrument and read in liquid crystal screen module 107；Therefore, this requires that liquid crystal display display precision and stability are guaranteed.Therefore,
Above-mentioned electric source filter circuit and the time delay done to pointer drive module show to pointer and also play an important role.
Finally, pointer drive module 109 drives hand motion to specified location according to offset.
By above-mentioned closed-loop control, it is possible to achieve the real-time control to pointer position, being capable of more accurately display in real time
Current instrument numerical value.It should be noted that：
Angular transducer is 360 ° of full monitorings, and the voltage signal of 0 ° to 360 ° of angle change correspondence 0.5V to 4.5V is defeated
Go out, pointer is mounted in the rotary shaft of motor, the bottom of rotary shaft embedded in a magnet, by this magnet and angle
Degree sensor interact (Hall effect) turned how many degree determining axle, it is corresponding, also just obtained how much indicators turn spends.
So when pointer points to different positions, the feedback voltage that angular transducer 110 feeds back to microprocessor control module 104 differs
Sample, and instrument draws the position to be gone to of pointer (in microprocessor after being calculated according to the conversion of the signal of outside 4-20mA
It is exactly a numerical value in the program of device), the numerical value after the feedback voltage conversion for then obtaining the numerical value and microprocessor is carried out
Compare, continue to deflect to the right if smaller than the numerical value that feedback voltage converts, if the numerical value converted than feedback voltage is big after
It is continuous to deflect to the left, illustrate that indicator is walked in place when as both.
In addition, it is contemplated that night uses, thousand points of instrument inner sides of dual display of the present invention also include LED module 112, described
LED module 112 includes row's LED 113 and switch key 114, and LED 113 and switch key 114 be all connected to it is micro-
104 in processor control module, switch key is pressed, LED 113 will be lighted, facilitate user to use at night.
Fig. 2 is dual display thousand points of mechanical profiles of instrument of numeral of offer in the embodiment of the present invention；Including：Upper lid 1, table
Body 2, table cover 3, dial plate 4, mainboard 5, support plate 6, pointer drive module 7, angular transducer 8, magnet mounting post 9, soft bar light bar
10, interior hexagonal pan head screw 11, stainless steel stud 12,13,14, interior hexagonal pan head screw 15,16, connector 17,18,19, magnetic
Iron 20, base plate 21, insulation board 22.
Fig. 3 is dual display thousand points of general assembly drawings of instrument of numeral of offer in the embodiment of the present invention；Including：Pointer 23, liquid crystal
Panel module 24, function button module 25, interior hexagonal pan head screw 26,27,28.
The present invention is explained in detail above in conjunction with accompanying drawing, but the present invention is not limited in above-described embodiment, at this
In the ken that field those of ordinary skill possesses, various changes can also be made on the premise of present inventive concept is not departed from
Change.
Claims (6)
1. thousand points of instrument of a kind of dual display, it is characterised in that including：Sensor assembly, A/D conversion chips module, microprocessor
Control module, LCD MODULE and pointer display module；The sensor assembly is connected with A/D conversion chip modules, and A/D turns
Chip module is changed to be connected with microprocessor control module；The LCD MODULE and the pointer display module respectively with institute
State the connection of microprocessor control module；And the pointer display module includes pointer drive module, angle-sensor module and pointer
Module, the pointer module is connected with the pointer drive module, and the pointer drive module controls mould with the microprocessor
Block is connected, and the angle-sensor module links together with the pointer drive module；To the pointer drive module
A time delay is done in motor-driven order, so that thousand points of instrument of the dual display first show real-time on the LCD MODULE
The numerical value of measurement, then drives pointer to go to corresponding scale, and the A/D conversion chips module drives mould with the pointer
Block time-division operation.
2. thousand points of instrument of dual display according to claim 1, it is characterised in that also including LED module, the LED
Light bar module includes LED and switch key, and LED and switch key are all connected in microprocessor control module.
3. thousand points of instrument of dual display according to claim 1, it is characterised in that the LCD MODULE includes liquid crystal display
Module and function button module；The liquid crystal screen module is connected with microprocessor control module；The function button module with it is micro-
Processor control module is connected.
4. thousand points of instrument of dual display according to claim 3, it is characterised in that the externally fed voltage of thousand points of instrument is
24V。
5. thousand points of instrument of dual display according to claim 1, it is characterised in that the angle-sensor module drives with pointer
Dynamic model block is co-axially mounted；
Angular transducer is 360 degree and monitors entirely that corresponding voltage signal is 0.5V to 4.5V from 0 degree to 360 degree.
6. the control method that a kind of thousand points of gauge pointers of dual display show, it is characterised in that comprise the following steps：
A time delay is done in motor-driven order to pointer drive module, so that thousand points of instrument of the dual display are first in liquid crystal display
The numerical value of measurement in real time is shown in module, then drives pointer to go to corresponding scale, and A/D conversion chips module with it is described
Pointer drive module time-division operation；
Angular transducer Real-time Feedback pointer position, and positional information is sent to microprocessor control module；
Microprocessor control module compares the real measured data at positional information moment corresponding with the positional information, is compensated
Value, and offset is sent to pointer drive module；
Pointer drive module drives hand motion to specified location according to offset.
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| CN201410715302.7A CN104457810B (en) | 2014-11-28 | 2014-11-28 | Double-display micrometer gauge and micrometer gauge pointer display control method |
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| CN201410715302.7A CN104457810B (en) | 2014-11-28 | 2014-11-28 | Double-display micrometer gauge and micrometer gauge pointer display control method |
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| CN104457810B true CN104457810B (en) | 2017-05-24 |
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| CN106404033A (en) * | 2016-08-03 | 2017-02-15 | 重庆盟讯电子科技有限公司 | Automobile instrument panel automatic detection system based on angle sensor |
| CN107656453B (en) * | 2017-09-18 | 2024-04-12 | 上海伟世通汽车电子系统有限公司 | Automobile instrument pointer pressing-in equipment and method thereof |
| CN107450381A (en) * | 2017-09-28 | 2017-12-08 | 重庆集元科技有限公司 | Refer to the finger weight system of weight instrument for electronics |
| CN110108311A (en) * | 2019-04-30 | 2019-08-09 | 中国人民解放军海军潜艇学院 | Pointer rotation indicator can be corrected |
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| CN2600797Y (en) * | 2003-01-15 | 2004-01-21 | 张廖泉 | Digital pointer display device |
| CN2798051Y (en) * | 2005-06-07 | 2006-07-19 | 杨青年 | Wide angle digital display |
| CN201522318U (en) * | 2009-11-12 | 2010-07-07 | 彭希南 | Commercial electronic scale |
| CN201562009U (en) * | 2009-12-08 | 2010-08-25 | 彭希南 | Universal panel type digital alternating current voltmeter |
| CN201688922U (en) * | 2010-05-29 | 2010-12-29 | 辽宁华信精工电力设备有限责任公司 | High precision intelligent finger thermometer |
| US20130092075A1 (en) * | 2011-10-13 | 2013-04-18 | Christopher J. Volpe | Digital meter |
| JP5848954B2 (en) * | 2011-11-09 | 2016-01-27 | 矢崎総業株式会社 | Display device |
| EP2772727A1 (en) * | 2013-03-01 | 2014-09-03 | Innovative Solutions and Support, Inc. | Method and System for Highlighting a Flight Path Deviation of an Aircraft |
| CN204359329U (en) * | 2014-11-28 | 2015-05-27 | 北京航天易联科技发展有限公司 | A kind of two display thousand points of instrument |
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Denomination of invention: Double-display micrometer gauge and micrometer gauge pointer display control method Effective date of registration: 20191111 Granted publication date: 20170524 Pledgee: Beijing Yizhuang International Financing Guarantee Co.,Ltd. Pledgor: BEIJING AEROSPACE YILIAN SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2019990000503 |
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Address after: Building 24, 18th Courtyard, Kechuang 13th Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing, 100176 Patentee after: Beijing Aerospace Tianhong Intelligent Equipment Technology Co.,Ltd. Address before: 100074, No. 17 Yungang West Road, Beijing, Fengtai District Patentee before: BEIJING AEROSPACE YILIAN SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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