CN106441696A - Telemetering digital pressure gauge - Google Patents
Telemetering digital pressure gauge Download PDFInfo
- Publication number
- CN106441696A CN106441696A CN201610817148.3A CN201610817148A CN106441696A CN 106441696 A CN106441696 A CN 106441696A CN 201610817148 A CN201610817148 A CN 201610817148A CN 106441696 A CN106441696 A CN 106441696A
- Authority
- CN
- China
- Prior art keywords
- displacement
- core
- pressure gauge
- pressure meter
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0026—Transmitting or indicating the displacement of flexible, deformable tubes by electric, electromechanical, magnetic or electromagnetic means
Abstract
The invention discloses a telemetering digital pressure gauge which comprises three parts: a housing body, a spring tube part, a digital pressure gauge movement part. The digital pressure gauge movement part includes an upper cover for the pressure gauge movement, a lower cover for the pressure gauge movement, a displacement driving wheel, a displacement driving wheel shaft, a displacement driven wheel, a displacement driven wheel shaft, a permanent magnet, an upper bearing and a lower bearing, a PCB, a single chip microcomputer, a stepper motor driving chip, a magnetic displacement detecting chip, a surface mounted LED, a step motor coil winding, a stepper motor iron core body, a stepper motor output rotation shaft, a stepper motor rotor, and pointers. According to the digital pressure gauge movement of the invention, the single chip microcomputer, the magnetic displacement technology, the stepper motor driving digitalized pointer indication technology and the digital bus communication technology are integrated into one, making a brand new digital pressure gauge. The significance of the invention comprises that with it, a digital solution can be available to the networking of the pressure nodes of the Internet of Things and an industrial control site.
Description
Technical field
The present invention relates to a kind of teletransmission digital pressure gauge, it is mainly used in measuring the pressure of the media such as liquid, steam or gas,
On the one hand online current pressure is indicated, on the other hand measured value with the teletransmission of binary digit mode to host computer or secondary
In instrument, to realize centralized detecting and remote monitor.
Background technology
Traditional distance-transmission pressure gauge is a kind of conventional pressure instrumentation, and the operation principle of its instrument is as follows：When to steel
Or copper alloy does not play the measured mediums such as liquid, steam or the gas of corrosiveness and enters elasticity sensitivity by pipe joint part
After element is spring tube cavity, bourdon tube will occur elastic deformation in the presence of measured medium pressure, so as to turning pressure
It is changed into the corresponding elastic displacement of bourdon tube free end generation, its displacement is turned by quadrant drive enlarger and linkage
Corresponding corner displacement is changed to, and is conducted to the simulation gauge pointer with corner displacement synchronization, cause indicators turn to show pressure
Power, and the current pressure of measured medium is indicated on the scale groove of registration device, a slip is set inside distance-transmission pressure gauge
Resistance-type transmitter, by the movement of sliding contact on slide wire resistance formula transmitter, changes resistance value, can be tested pressure deformation
Size is converted into corresponding resistance value and is reached on the secondary meter of distant place with the version of electricity, to realize centralized detecting and remote
Distance detection.The pressure of measured medium is bigger, and indicators turn angle is also bigger, and after distress resolves, spring tube bending returns to original
The shape that comes, by the effect of damping hairspring, pointer returns to starting point zero-bit.
Content of the invention
Technical problem
Traditional distance-transmission pressure gauge is a kind of pressure instrumentation of simulation, is mainly made up of three parts, and one is housing, and two are
Elastic sensitive detection element bourdon tube, simulation instruction device and slide wire resistance that three are made up of hairspring, gear, connecting rod and pointer
The simulation movement combination that formula transmitter is constituted, this traditional distance-transmission pressure gauge is with a long history, and decades are consistent, substantially do not have
What changes.Its internal structure is that, in circular inside the shell, have a spring that is made with seamless copper pipe or seamless steel pipe
Pipe, curves C-shaped, bourdon tube cross section ovalize, and its oval major axis is parallel with the central shaft of indicator, bourdon tube one end with
Pipeline is communicated becomes fixing end, and the other end is the free end of closing and is connected with one end of connecting rod, and the other end of connecting rod is fan-shaped
Gear, sector gear is mutually connected with the little gear on central shaft.When in C-spring pipe by medium pressure when, one will be formed
Fixed Zernike annular polynomial, this Zernike annular polynomial can make bourdon tube stretch out, and as bourdon tube free end is not fixed, will freely produce change
Shape, the size of its deformation depending on the pressure size of measurement medium, the deformation of bourdon tube through connecting rod drive sector gear with little
Pinion rotation, makes pointer turn an angle clockwise, and the pressure of medium is bigger, and indicators turn angle is also bigger.When
During reduced pressure, spring tube bending can shrink inwards, make pointer return to corresponding position, and after distress resolves, spring tube bending is extensive
Original shape is arrived again, and by the effect of hairspring, pointer also returns to starting point zero-bit.From the above it can be seen that the deformation of bourdon tube passes through
Simulation movement is shown the pressure of measurement medium indirectly by pointer, by central slide contact in the position of potentiometer, tested
Pressure value is reached on the secondary meter away from measurement apparatus with the change of charge value, and due to transmission is analogue signal, therefore resists
Interference performance and transmission range are all restricted.It is especially noted that due to the pulse characteristic of working media, its pressure song
Line amplitude is larger, and during pressure gauge work, the vibrations of pointer are larger, and this is very harmful for fragile pressure gauge hairspring, and
Reading is forbidden, and how to overcome existing manometric defect, teletransmission simulated pressure table is transformed into teletransmission digital pressure gauge, exactly originally
Problems to be solved by the invention.
Technical scheme
In order to teletransmission simulated pressure table is transformed into teletransmission digital pressure gauge, the present invention proposes a kind of teletransmission numeral pressure of novelty
Power table scheme, is in place of its novelty, introduces single-chip microcomputer technology, and one is the digitized for realizing force samples, and two is to realize
The digitized that pressure is indicated.The present invention is by a kind of digital pressure gauge movement while indicate technology, magnetic sensing by digitizing pointer
Displacement detecting technology and high-speed synchronous serial communication bus combine, while the numerical indexes for realizing measured medium pressure show
Binary digital teletransmission is realized with by high-speed synchronous universal serial bus, so in addition to can be with digital filtering, may be used also
Realize entirety most to save, system optimal.
Its technical scheme is specific as follows：
A kind of teletransmission digital pressure gauge, is made up of housing, spring tube portion, three part of digital pressure gauge movement, described housing
Part includes front bezel, cluster, lining ring, center, rear watchcase, five core aviation sockets, scale panel, and described spring tube portion includes bullet
Reed pipe joint, the C-spring pipe being welded on spring pipe joint, the bourdon tube hinge for being welded on C-spring pipe free end, adjustment
Bar and pull bar, which is characterized by：
Described digital pressure gauge movement includes：Lid, core of pressure meter lower cover, displacement drivewheel, displacement master on core of pressure meter
Driving wheel axostylus axostyle, displacement driven pulley, displacement driven pulley axostylus axostyle, permanent magnet, upper bearing (metal) and lower bearing, motor coil windings, step
Stepper motor iron core, motor follower gear, motor output rotation axis, stepping motor rotor, pointer, pcb board part；
On described pcb board, Surface Mount is welded with single-chip microcomputer, stepper motor driver chip, magnetic displacement detection chip, paster LED unit
Part, described motor coil windings pin is connected with the I/O foot of stepper motor driver chip, the I/O pin of single-chip microcomputer with
Stepper motor driver chip is connected；
The edge of described displacement drivewheel stretches out a handlebar stem, and handlebar stem is connected with pull bar, one end of pull bar and adjusting lever
It is connected, the other end of adjusting lever is connected with the bourdon tube hinge of C-spring pipe free end again；
There is a displacement drivewheel axostylus axostyle described displacement drivewheel center, is cased with a drivewheel on displacement drivewheel axostylus axostyle
Bearing, in the drive wheel bearing embedded hole seat that drive wheel bearing is tightly covered on core of pressure meter, displacement drivewheel
Tooth be mutually engaged with the tooth of displacement driven pulley；
Described displacement driven pulley is socketed with upper bearing (metal) and lower bearing on the driven axostylus axostyle of displacement on the driven axostylus axostyle of displacement,
Upper bearing (metal) and lower bearing are while tightly on core of pressure meter in the driven pulley bearing embedded hole seat of lid, displacement is driven
Axostylus axostyle is embedded in one piece of foursquare permanent magnet towards one end of pcb board, has a magnetic induction hole on pcb board, its magnetic displacement detection
The circular magnetic susceptibility part of chip just mounts aligned magnetic sensing hole, and magnetic induction hole center alignment is embedded in the driven axostylus axostyle one end of displacement
Permanent magnet, permanent magnet but is not contacted by magnetic induction hole near the circular magnetic susceptibility part of magnetic displacement detection chip, works as C-shaped
When bourdon tube is experienced overpressure and elastic deformation displacement occurs, displacement by bourdon tube hinge, adjusting lever, pull bar,
Hand lever drives displacement drivewheel to rotate, and displacement drivewheel drives displacement driven pulley to rotate by tooth engaged, so that displacement is driven
Permanent magnet on axle rod also deflects, and magnetic displacement detection chip can detect that the change in magnetic flux density parallel to chip surface
Amount, the described output pin of magnetic displacement detection chip is connected with the I/O port of single-chip microcomputer.
On described core of pressure meter, lid and core of pressure meter lower cover are ring-shaped housing, one of its ring-shaped housing
Diameter is big and other end diameter is little, and there are two attackers the both sides that covers on core of pressure meter per side, and the two of core of pressure meter lower cover
There are two pawls side per side, and after on core of pressure meter, lid is overlapped with core of pressure meter lower cover, the attacker of both sides just tangles two
The pawl of side, makes lid and core of pressure meter lower cover on core of pressure meter be connected, has covered four positioning under core of pressure meter
Fixing earhole, can be fixed on core of pressure meter in four positioning fixed seats of rear watchcase by screw.
The center of described housing outer hexagon shape body in inner circle, has one in a line of the outer hexagon shape body of center
Individual bourdon tube installing hole, C-spring pipe is connected with one end of spring pipe joint, and the other end of spring pipe joint is through on center
Stretch out after bourdon tube installing hole.
Have an aviation plug installing hole in the another a line of the center, five core aviation sockets by the hole with
Center is connected, and the pin definition of five core aviation sockets is respectively power supply VCC, ground wire GND, clock signal SCLK, data output
SDO, enable signal CS, described above five pins are corresponding with the pin of single-chip microcomputer respectively to be connected.
Described pcb board is also a diameter little not equal diameter annular slab of other end diameter greatly, and screw is solid by PCB
Determine hole to be connected with lid on core of pressure meter.
Described motor coil windings are welded on the big side of pcb board diameter, and motor iron core is then passed through step
Stepper motor bracket for winding coil is installed and is fixed, and described stepping motor rotor is mutually engaged with motor follower gear, stepping electricity
Machine output rotation axis are mutually engaged with motor follower gear again.
There is a pointer connecting rod for hollow cylinder on described pointer, pointer connecting rod is covered through on core of pressure meter
Motor shaft outlet hole after, be directly connected with motor output rotation axis.
Described motor output rotation axis be hollow, under correct alignment pcb board loophole, paster LED
Light-emitting area is just mounted on the center position of loophole on pcb board, and when LED is luminous, its light path passes through loophole, hollow step
The pointer connecting rod of stepper motor shaft outlet hole and hollow cylinder is transmitted on the pointer of printing opacity.
There is a circular lining ring inner side of front bezel, cluster, and scale panel is fixed between front bezel, cluster and lining ring.
Technique effect
Teletransmission digital pressure gauge proposed by the invention has following significant beneficial effect：
1st, teletransmission digital pressure gauge proposed by the invention is with the fundamental difference of traditional distance-transmission pressure gauge, employs a kind of number
Word core of pressure meter, takes the lead in single-chip microcomputer, magnetic induction shift technique, stepper motor driven digitizing pointer instruction technology sum
Word bus communication technology integrally combines, eliminate completely for remote analog data transmission slide wire resistance formula transmitter and
Movement is indicated by the simulation that hairspring, gear, connecting rod and pointer constitute, this is a kind of brand-new digital pressure gauge phenotype.
2nd, the optimal renewal based on the not still traditional analog distance-transmission pressure gauge of the teletransmission digital pressure gauge designed by the present invention
Regeneration product, actually it is also proposed the optimal case for being updated transformation to existing distance-transmission pressure gauge, this is because, this
Bright rationally remain in traditional distance-transmission pressure gauge elastic sensitive detection element part, increased the digital pressure gauge machine of compact newly
Core, therefore, it can produce unexpected effect as follows, and the transformation to existing distance-transmission pressure gauge need only be by digital pressure gauge machine
Slide wire resistance formula transmitter directly replaced by core and simulation indicates movement, you can escalate into far existing simulation distance-transmission pressure gauge
Digital pressure gauge is passed, is the substantial improvements to existing simulation distance-transmission pressure gauge.
3rd, the ingenious part of the present invention is the modular construction for employing the system integration on digital pressure gauge movement, described
On core of pressure meter, lid and core of pressure meter lower cover are ring-shaped housing, the diameter other end greatly of its ring-shaped housing
Diameter is little, and described motor part is installed in the big ring-shaped housing side of diameter, and described displacement detection part is installed
In the little ring-shaped housing side of diameter, multifunction module is concentrated in a digital core of pressure meter, is used as by single-chip microcomputer
Core devices implement Coordination Treatment, really realize system and most save, total optimization.
4th, traditional distance-transmission pressure gauge, using slide wire resistance formula transmitter, due to being contact type structure, produced during work rubs
Wiping makes it easier to abrasion, poor, the proposed by the invention teletransmission digital pressure gauge based on digital pressure gauge movement of reliability, peace
Dress is easy, and the simulation damped part such as the hairspring not being easily damaged, and its service life is longer, and maintainability is more preferable.
5th, teletransmission digital pressure gauge proposed by the invention, due to adopting high-speed synchronous SPI serial communication bus, transmission distance
From farther, the bit error rate is lower.
6th, as working media has larger pulse characteristic, its pressure curve amplitude is larger, during the work of conventional pressure table
The vibrations of pointer are larger, and this is very harmful to the pressure gauge using hairspring structure, and cause reading to be forbidden, therefore tradition
Pressure gauge in order to reduce fluctuation pressure, choke valve need to be arranged on pressure gauge porch, the present invention uses motor
The pointer-digit filtering actuation techniques of drive, due to the addition of single-chip microcomputer, it is possible to achieve the various smooth means such as digital filtering,
Even if choke valve is not installed in pressure gauge porch, can also ensure that gauge hand is indicated steady.
7th, teletransmission digital pressure gauge proposed by the invention, uses the pointer of hollow shaft structure, only makees by a LED
For light source, pointer can be lighted, even if at night not by secondary light source, it is also possible to see dial reading, the visuality of instrument clearly
Preferably, user interface close friend.
8th, described magnetic displacement detection chip is the monolithic integrated optical circuit using planar Hall sensing technology, and it can detect
To the change in magnetic flux density for being caused due to permanent magnet rotation parallel to chip surface, the automatic benefit of the achievable temperature drift of chip
Repay, the very high digital absolute displacement signal of accuracy is exported by its pin, the signal is sent in single-chip microcomputer, such that it is able to standard
The deformation displacement amount of true detection spring pipe, single-chip microcomputer can be converted under current pressure by digital filtering and engineering change of variable
Step angle needed for drive stepping motor throw of pointer, and pressure data numeral transmission is realized by spi bus, with cost
Cheap, the high feature of certainty of measurement.
9th, especially interesting is that distance-transmission pressure gauge is the main tester of Industry Control scene and pipe network water supply equipment
Table, its digitized is for the internet of things networking for realizing Industry Control site pressure control node, there is provided a kind of efficient, low become
Originally with reliable digital technology solution.
Description of the drawings
Outline drawing on the left of Fig. 1 teletransmission digital pressure gauge；
Fig. 2 teletransmission digital pressure gauge front view；
Fig. 3 removes the inside rear view of rear watchcase；
Fig. 4 removes the front view of front bezel, cluster, center and rear watchcase；
The interior views one of Fig. 5 core of pressure meter；
The interior views two of Fig. 6 core of pressure meter；
The interior views three of Fig. 7 core of pressure meter；
Fig. 8 digital pressure gauge movement explosive view four；
Fig. 9 digital pressure gauge movement explosive view five；
Figure 10 teletransmission digital pressure gauge forward direction explosive view；
Figure 11 teletransmission digital pressure gauge backlash figure.
Label declaration：
2 center of bezel, cluster before 1
201 bourdon tube installing hole, 202 aviation plug installing hole
4 scale panel of watchcase after 3
5 pointer, 6 pointer connecting rod
7 five core aviation socket, 8 spring pipe joint
9 C-spring pipe, 10 PCB fixing hole
12 core of pressure meter lower covers are covered on 11 core of pressure meters
13 attacker, 14 pawl
15 lining ring, 16 pcb board
17 stepper motor driver chip, 18 single-chip microcomputer
19 magnetic displacement detection chip, 20 paster LED
21 displacement drivewheel, 22 handlebar stem
23 displacement driven pulley, 24 bourdon tube hinge
25 adjusting lever, 26 pull bar
27 upper bearing (metal), 28 lower bearing
29 displacement driven pulley axostylus axostyle, 30 permanent magnet
31 magnetic induction hole, 32 loophole
The fixing earhole 34 of 33 positioning positions fixed seat
35 motor shaft outlet hole, 36 drive wheel bearing
37 displacement drivewheel axostylus axostyle, 38 drive wheel bearing embedded hole seat
39 driven pulley bearing embedded hole seat, 40 motor coil windings
41 motor follower gear, 42 motor output rotation axis
43 stepping motor rotor, 44 motor iron core
Specific embodiment
The specific embodiment of the present invention is described below in conjunction with the accompanying drawings.
Teletransmission digital pressure gauge of the present invention is as shown in Figure 1 to 11.A kind of teletransmission digital pressure gauge, by housing, bourdon tube
Partly, three part of digital pressure gauge movement composition, described housing parts include front bezel, cluster 1, lining ring 15, center 2, rear watchcase 3,
Five core aviation sockets 7, scale panel 4, described spring tube portion includes spring pipe joint 8, is welded on spring pipe joint 8
C-spring pipe 9, be welded on the bourdon tube hinge 24 of 9 free end of C-spring pipe and 24 connected adjusting lever 25 of bourdon tube hinge,
With 25 connected pull bar 26 of adjusting lever, which is characterized by：
Described digital pressure gauge movement includes：On core of pressure meter lid 11, core of pressure meter lower cover 12, displacement drivewheel 21,
Displacement drivewheel axostylus axostyle 37, displacement driven pulley 23, displacement driven pulley axostylus axostyle 29, permanent magnet 30, upper bearing (metal) 27 and lower bearing 28, step
Stepper motor coil windings 40, motor iron core 44, motor follower gear 41, motor output rotation axis 42, step
Stepper motor rotor 43, pointer 5,16 part of pcb board；
On described pcb board 16, Surface Mount is welded with single-chip microcomputer 18, stepper motor driver chip 17, magnetic displacement detection chip 19, patch
20 element of piece LED, described 40 pin of motor coil windings is connected with the I/O foot of stepper motor driver chip 17, monolithic
The I/O pin of machine 18 is connected with stepper motor driver chip 17；
The edge of described displacement drivewheel 21 stretches out a handlebar stem 22, and handlebar stem 22 is connected with pull bar 26, pull bar 26 with adjust
One end of whole bar 25 is connected, and the other end of adjusting lever 25 is connected with the bourdon tube hinge 24 of 9 free end of C-spring pipe again；
The edge of described displacement drivewheel 21 stretches out a handlebar stem 22, and handlebar stem 22 is connected with pull bar 26, pull bar 26 with adjust
One end of whole bar 25 is connected, and the other end of adjusting lever 25 is connected with the bourdon tube hinge 24 of 9 free end of C-spring pipe again；
There is a displacement drivewheel axostylus axostyle 37 described 21 center of displacement drivewheel, is cased with one on displacement drivewheel axostylus axostyle 37
Drive wheel bearing 36, drive wheel bearing 36 tightly covers 11 drive wheel bearing embedded hole seat on core of pressure meter
In 38, the tooth of displacement drivewheel 21 is mutually engaged with the tooth of displacement driven pulley 23；
Described displacement driven pulley 23 is on the driven axostylus axostyle 29 of displacement, and is socketed with upper bearing (metal) 27 on the driven axostylus axostyle 29 of displacement
With lower bearing 28, upper bearing (metal) 27 and lower bearing 28 while tightly on core of pressure meter, the driven pulley bearing of lid 11 is embedding
Enter in hole seat 39, the driven axostylus axostyle 29 of displacement is embedded in one piece of foursquare permanent magnet 30 towards one end of pcb board 16, on pcb board 16
The circular magnetic susceptibility part for having a magnetic induction hole 31, its magnetic displacement detection chip 19 just mounts aligned magnetic sensing hole 31, magnetic
31 center of sensing hole alignment is embedded in the permanent magnet 30 of driven 29 one end of axostylus axostyle of displacement, and permanent magnet 30 is by magnetic induction hole 31 near magnetic
The circular magnetic susceptibility part of displacement detecting chip 19, but do not contact, when overpressure experienced by C-spring pipe 9 and elasticity occurs
During deformational displacement, displacement drives 21 turns of displacement drivewheel by bourdon tube hinge 24, adjusting lever 25, pull bar 26, handlebar stem 22
Dynamic, displacement drivewheel 21 drives displacement driven pulley 23 to rotate by tooth engaged, so that on 29 end face of displacement driven pulley axostylus axostyle
Permanent magnet 30 also deflect, on pcb board 16, the magnetic displacement detection chip 19 of Surface Mount is can detect that parallel to chip surface
Change in magnetic flux density amount, the output pin of magnetic displacement detection chip 19 is connected with the I/O port of single-chip microcomputer 18.
It is to be noted that the cross section of described C-spring pipe is in a ring, the pressure of measured medium acts on C-shaped bullet
The inner side of reed pipe, the annular interface of such C-spring pipe will tend to circular in the presence of pressure medium, and forming certain ring should
Power, so that the extension that deforms at the free end that C-spring Guan Qi is not fixed, i.e. bourdon tube hinge 24, its deformation
Size is depending on the pressure size of measured medium in C-spring pipe.
Described magnetic displacement detection chip 19 is the monolithic integrated optical circuit using planar Hall sensing technology, and it can detect
To the change in magnetic flux density for causing due to permanent magnet rotation parallel to chip surface, and can achieve the automatic benefit of temperature drift
Repay, the very high digital absolute displacement signal of accuracy is exported by its pin, the signal is sent in single-chip microcomputer 18, such that it is able to
The deformation displacement amount of C-spring pipe 9 is accurately detected, single-chip microcomputer, can be by the displacement by digital filtering and engineering change of variable
The step angle needed for drive stepping motor throw of pointer under current pressure is converted into, is indicated on scale panel 4 by pointer 5
The pressure data of current media, meanwhile, the numeral transmission of pressure data realized by single-chip microcomputer 18 by spi bus, with low cost
Honest and clean, the high feature of certainty of measurement.
On described core of pressure meter, lid 11 and core of pressure meter lower cover 12 are ring-shaped housing, its ring-shaped housing
One diameter is big and other end diameter is little, and on core of pressure meter, there are two attackers 13 both sides of lid 11 per side, core of pressure meter
There are two pawls 14 both sides of lower cover 12 per side, after on core of pressure meter, lid 11 is overlapped with core of pressure meter lower cover 12, both sides
Attacker 13 just tangle the pawl 14 of both sides, so that lid 11 and core of pressure meter lower cover 12 on core of pressure meter is connected, pressure
There are four positioning to fix earhole 33 on power table movement lower cover 12, by screw, core of pressure meter can be fixed on the four of rear watchcase 3
In individual positioning fixed seat 34.
The center 2 of the housing outer hexagon shape body in inner circle, has one in a line of the outer hexagon shape body of center 2
Individual bourdon tube installing hole 201, C-spring pipe 9 is connected with one end of spring pipe joint 8, during the other end of spring pipe joint 8 is passed through
Stretch out after bourdon tube installing hole 201 on frame 2.
An aviation plug installing hole 202 is had in the another a line of described center 2, and five core aviation sockets 7 lead to
Cross the hole to be connected with center 2, the definition of the pin of five core aviation sockets 7 be respectively power supply VCC, ground wire GND, clock signal SCLK,
Data output SDO, enable signal CS, described above five pins are corresponding with the pin of single-chip microcomputer 18 respectively to be connected.
Described pcb board 16 is also a diameter little not equal diameter annular slab of other end diameter greatly, and screw passes through PCB
Fixing hole 10 is connected with lid 11 on core of pressure meter.
Described motor coil windings 40 are welded on the big side of 16 diameter of pcb board, and motor iron core 44 is again
Through 40 support of motor coil windings, fixation, described stepping motor rotor 43 and 41 phase of motor follower gear are installed
Occlusion, motor output rotation axis 42 are mutually engaged with motor follower gear 41 again.
There is a pointer connecting rod 6 for hollow cylinder on described pointer 5, pointer connecting rod 6 is through on core of pressure meter
After motor shaft outlet hole 35 on lid 11, directly it is connected with motor output rotation axis 42.
Described motor output rotation axis 42 be also hollow, under correct the loophole 32 of alignment pcb board 16, patch
The light-emitting area of piece LED20 is just mounted on the center position of loophole 32 on pcb board 16, and when LED 20 lights, its light path passes through
The pointer connecting rod 6 of loophole 32, hollow motor shaft outlet hole 35 and hollow cylinder is transmitted on the pointer 5 of printing opacity.This
The pointer of hollow shaft structure, only by a LED as light source, can light pointer, even if at night not by secondary light source,
Dial reading can be seen clearly, the visuality at instrument night is preferable.
There is a circular lining ring 15 inner side of front bezel, cluster 1, and scale panel 4 is fixed on front bezel, cluster 1 and lining ring 15
Between.
There is external screw thread the front and back end of described center 2, during assembling, front bezel, cluster 1 by the front external screw thread on center 2 with
Frame 2 is connected, and rear watchcase 3 is connected with center 2 by the rear external screw thread on center 2, forms one.
In sum, teletransmission digital pressure gauge design proposed by the invention, is a kind of brand-new digital pressure gauge
Phenotype, is in place of its core, and it employs a kind of digital pressure gauge movement, and by single-chip microcomputer, magnetic induction shift technique, stepping
Motor-driven digitizing pointer indicates that technology and high-speed figure bus communication technology integrally combine, and is traditional analog teletransmission pressure
The optimal renewal product of table.
In the present embodiment, inventor remains elastic sensitive detection element i.e. C-spring duct member intentionally, substantially has
On the premise of targetedly not making large variation in structure to existing tradition distance-transmission pressure gauge, just can will in the way of most succinct
Existing simulated pressure instrument is transformed into digital pressure instrument, and method is very simple, need only directly replace digital pressure gauge movement
Original simulation indicates movement and slide wire resistance formula transmitter, you can immediately existing simulation distance-transmission pressure gauge is escalated into teletransmission
Digital pressure gauge, really realizes system and most saves, total optimization.
Especially interesting is that distance-transmission pressure gauge is used as Industry Control scene and the main tester of pipe network water supply equipment
Table, its sampling digitizing and designation number are carried for the local networking for realizing Industry Control site pressure control node
A kind of digital Internet of Things solution of low cost is supplied, can be widely applied to all kinds of liquid pumpings or secondary water-supply equipment pressure
Detection, its application prospect is quite wide.
Claims (7)
1. a kind of teletransmission digital pressure gauge, is made up of housing, spring tube portion, three part of digital pressure gauge movement, described shell
Body portion includes front bezel, cluster（1）, lining ring（15）, center（2）, rear watchcase（3）, five core aviation sockets（7）, scale panel（4）, institute
The spring tube portion that states includes spring pipe joint（8）, C-spring pipe（9）, bourdon tube hinge（24）, adjusting lever（25）And pull bar
（26）, it is characterised in that：
Described digital pressure gauge movement includes：Cover on core of pressure meter（11）, core of pressure meter lower cover（12）, displacement drivewheel
（21）, displacement drivewheel axostylus axostyle（37）, displacement driven pulley（23）, displacement driven pulley axostylus axostyle（29）, permanent magnet（30）, upper bearing (metal)
（27）And lower bearing（28）, motor coil windings（40）, motor iron core（44）, motor follower gear
（41）, motor output rotation axis（42）, stepping motor rotor（43）, pointer（5）, pcb board（16）Part；
Described pcb board（16）Upper Surface Mount is welded with single-chip microcomputer（18）, stepper motor driver chip（17）, magnetic displacement detection chip
（19）, paster LED（20）Element, described motor coil windings（40）Pin and stepper motor driver chip（17）I/
O foot is connected, single-chip microcomputer（18）I/O pin and stepper motor driver chip（17）It is connected；
Described displacement drivewheel（21）Edge stretch out a handlebar stem（22）, handlebar stem（22）With pull bar（26）It is connected, draws
Bar（26）With adjusting lever（25）One end be connected, adjusting lever（25）The other end again with C-spring pipe（9）The bourdon tube of free end
Hinge（24）It is connected；
Described displacement drivewheel（21）There is a displacement drivewheel axostylus axostyle center（37）, displacement drivewheel axostylus axostyle（37）Upper set
There is a drive wheel bearing (36), drive wheel bearing (36) is tightly covered on core of pressure meter（11）Drivewheel
Bearing embedded hole seat（38）In, displacement drivewheel（21）Tooth and displacement driven pulley（23）Tooth be mutually engaged；
Described displacement driven pulley（23）Installed in the driven axostylus axostyle of displacement（29）On, the driven axostylus axostyle of displacement（29）On be socketed with upper shaft
Hold（27）And lower bearing（28）, upper bearing (metal)（27）And lower bearing（28）While tightly covering on core of pressure meter（11）
Driven pulley bearing embedded hole seat（39）In, the driven axostylus axostyle of displacement（29）Towards pcb board（16）One end be embedded in one piece of square
Permanent magnet（30）, pcb board（16）On have a magnetic induction hole（31）, its magnetic displacement detection chip（19）Circular magnetic susceptibility
Part just mounts aligned magnetic sensing hole（31）, magnetic induction hole（31）Center alignment is embedded in the driven axostylus axostyle of displacement（29）One end is forever
Magnet（30）, permanent magnet（30）By magnetic induction hole（31）Near magnetic displacement detection chip（19）Circular magnetic susceptibility part, but
Do not contact, when C-spring pipe（9）When experiencing overpressure and elastic deformation displacement occurring, displacement passes through bourdon tube hinge
（24）, adjusting lever（25）, pull bar（26）, handlebar stem（22）Drive displacement drivewheel（21）Rotate, displacement drivewheel（21）Pass through
Tooth engaged drives displacement driven pulley（23）Rotate, make displacement driven pulley axostylus axostyle（29）On permanent magnet（30）Also deflect, magnetic
Displacement detecting chip（19）The change in magnetic flux density amount parallel to chip surface can be detected, described magnetic displacement detection chip
（19）Output pin and single-chip microcomputer（18）I/O port be connected.
2. teletransmission digital pressure gauge according to claim 1, it is characterised in that：Cover on described core of pressure meter（11）With
Core of pressure meter lower cover（12）Ring-shaped housing is, a diameter of its ring-shaped housing is big and other end diameter is little, pressure
Table core upper cover（11）Both sides have two attackers per side（13）, core of pressure meter lower cover（12）Both sides have two per side
Pawl（14）, cover on core of pressure meter（11）With core of pressure meter lower cover（12）After overlapping, the attacker of both sides（13）Just tangle
The pawl of both sides（14）, make to cover on core of pressure meter（11）With core of pressure meter lower cover（12）It is connected, under core of pressure meter
Lid（12）On have the fixing earholes of four positioning（33）, core of pressure meter can be fixed on by rear watchcase by screw（3）Four fixed
Position fixed seat（34）On.
3. teletransmission digital pressure gauge according to claim 1, it is characterised in that：The center of described housing（2）In inner circle
Outer hexagon shape body, center（2）Outer hexagon shape body a line on have a bourdon tube installing hole（201）, C-spring
Pipe（9）With spring pipe joint（8）One end be connected, spring pipe joint（8）The other end passes through center（2）On bourdon tube installing hole
（201）After stretch out.
4. teletransmission digital pressure gauge according to claim 1, it is characterised in that：Described center（2）Another a line on
Have an aviation plug installing hole（202）, five core aviation sockets（7）By the hole and center（2）It is connected, five core aviations
Socket（7）Pin definition be respectively power supply VCC, ground wire GND, clock signal SCLK, data output SDO, enable signal CS, institute
Above five pins that states respectively with single-chip microcomputer（18）Pin correspond to be connected.
5. teletransmission digital pressure gauge according to claim 1, it is characterised in that：Described pcb board（16）Also straight for one
The footpath little not isometrical annular slab of other end diameter greatly, screw passes through PCB fixing hole（10）Cover with core of pressure meter（11）Phase
Even.
6. teletransmission digital pressure gauge according to claim 1, it is characterised in that：Described motor coil windings（40）
It is welded on pcb board（16）The big side of diameter, motor iron core（44）It is then passed through motor coil windings（40）Support
Install and fix, described stepping motor rotor（43）With motor follower gear（41）Mutually it is engaged, motor output is rotated
Axle（42）Again with motor follower gear（41）Mutually it is engaged, described pointer（5）On have a pointer for hollow cylinder
Connecting rod（6）, pointer connecting rod（6）Cover through on core of pressure meter（11）On motor shaft outlet hole（35）Afterwards, directly and stepping
Motor output rotation axis（42）Connected, described motor output rotation axis（42）And hollow, under correct alignment PCB
Plate（16）Loophole（32）, paster LED（20）Light-emitting area be just mounted on pcb board（16）Upper loophole（32）Centre bit
Put place, LED（20）When luminous, its light path passes through loophole（32）, hollow motor shaft outlet hole（35）Finger with hollow cylinder
Pin connecting rod（6）It is transmitted to the pointer of printing opacity（5）On.
7. teletransmission digital pressure gauge according to claim 1, it is characterised in that：Front bezel, cluster（1）Inner side have a circle
Lining ring（15）, scale panel（4）It is fixed on front bezel, cluster（1）With lining ring（15）Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610817148.3A CN106441696A (en) | 2016-09-12 | 2016-09-12 | Telemetering digital pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610817148.3A CN106441696A (en) | 2016-09-12 | 2016-09-12 | Telemetering digital pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106441696A true CN106441696A (en) | 2017-02-22 |
Family
ID=58168691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610817148.3A Pending CN106441696A (en) | 2016-09-12 | 2016-09-12 | Telemetering digital pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106441696A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457944A (en) * | 2017-09-08 | 2017-12-12 | 苏州群创自动化设备有限公司 | A kind of automobile meter pointer preparatory processing device |
| CN111167137A (en) * | 2019-12-30 | 2020-05-19 | 深圳华侨城卡乐技术有限公司 | Air pressure gauge model for dynamic display and display control method thereof |
| CN117824905A (en) * | 2024-03-06 | 2024-04-05 | 抚顺市新抚工业仪表有限公司 | Magneto-electric pressure transmitting system and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5640992A (en) * | 1995-08-09 | 1997-06-24 | Huang; Tien-Tsai | Pressure gauge capable of automatically stopping supply of pressure from a pressure source |
| US20040093952A1 (en) * | 2002-11-15 | 2004-05-20 | Spencer Eisenbarth | Electronic pressure transducer |
| CN101443641A (en) * | 2006-05-15 | 2009-05-27 | 美达凯姆株式会社 | Sensing apparatus of bourdon pressure gauge |
| CN202255745U (en) * | 2011-09-19 | 2012-05-30 | 珠海三德艺电子有限公司 | Multifunctional industrial pressure gage |
| JP2014219304A (en) * | 2013-05-09 | 2014-11-20 | 株式会社プロスパイン | Pressure gauge |
-
2016
- 2016-09-12 CN CN201610817148.3A patent/CN106441696A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5640992A (en) * | 1995-08-09 | 1997-06-24 | Huang; Tien-Tsai | Pressure gauge capable of automatically stopping supply of pressure from a pressure source |
| US20040093952A1 (en) * | 2002-11-15 | 2004-05-20 | Spencer Eisenbarth | Electronic pressure transducer |
| CN101443641A (en) * | 2006-05-15 | 2009-05-27 | 美达凯姆株式会社 | Sensing apparatus of bourdon pressure gauge |
| CN202255745U (en) * | 2011-09-19 | 2012-05-30 | 珠海三德艺电子有限公司 | Multifunctional industrial pressure gage |
| JP2014219304A (en) * | 2013-05-09 | 2014-11-20 | 株式会社プロスパイン | Pressure gauge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457944A (en) * | 2017-09-08 | 2017-12-12 | 苏州群创自动化设备有限公司 | A kind of automobile meter pointer preparatory processing device |
| CN111167137A (en) * | 2019-12-30 | 2020-05-19 | 深圳华侨城卡乐技术有限公司 | Air pressure gauge model for dynamic display and display control method thereof |
| CN117824905A (en) * | 2024-03-06 | 2024-04-05 | 抚顺市新抚工业仪表有限公司 | Magneto-electric pressure transmitting system and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ITTO20010730A1 (en) | ANGULAR SIZE TRANSDUCER. | |
| CN106441696A (en) | Telemetering digital pressure gauge | |
| CN106441693B (en) | Double limit digital pressure gauges | |
| CN101802557A (en) | Has the contactless multi-turn absolute position Magnetic Sensor that runs through axle | |
| CN109178186A (en) | Converse magnetostriction axis torque sensor | |
| CN106568483A (en) | Turbine optical sensor and turbine optical flowmeter based on sensor | |
| CN103424162A (en) | Multi-pulley type liquid level sensor device | |
| CN109238177A (en) | A kind of combined type angular transducer with measurement multi-turn angle function | |
| CN203489929U (en) | Electronic counting intelligent film type gas meter | |
| WO2020200009A1 (en) | Intelligent gas meter anti-interference metering system | |
| CN108426619A (en) | High-precision bidirectional measuring electronic water meter | |
| WO2007121620A1 (en) | A contactless read out sensor for mechanical character wheel counter | |
| CN204903333U (en) | Teletransmission formula SF6 gas density table | |
| CN102200459A (en) | Direct reading gauge | |
| CN2833522Y (en) | Dual-magnetic head dual-sensor counting apparatus | |
| CN2852057Y (en) | Counter capable of measuring reverse flow | |
| US7284455B2 (en) | Electronic environment sensing instrument having an analog indicator | |
| CN203629645U (en) | Multi-circle pulley type liquid level sensor device | |
| CN208588421U (en) | High-precision bidirectional measuring electronic water meter | |
| CN101281048A (en) | Electronic type rotary-piston flowmeter | |
| CN104864939A (en) | Liquid storage tank material level indicating device with signal long-distance transmission as well as design method and liquid level calculating method of device | |
| CN109357639A (en) | A kind of optoelectronic angle sensing device and the method using its measurement multi-turn angle | |
| CN209416429U (en) | A kind of no magnetic message-reporting water meter | |
| CN201000380Y (en) | Light ring type pressure gauges | |
| CN2382006Y (en) | High-precision water meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |
|
| WD01 | Invention patent application deemed withdrawn after publication |