CN211824855U - Precise thin digital pressure gauge - Google Patents
Precise thin digital pressure gauge Download PDFInfo
- Publication number
- CN211824855U CN211824855U CN201920137936.7U CN201920137936U CN211824855U CN 211824855 U CN211824855 U CN 211824855U CN 201920137936 U CN201920137936 U CN 201920137936U CN 211824855 U CN211824855 U CN 211824855U
- Authority
- CN
- China
- Prior art keywords
- interface module
- led display
- function board
- sensor function
- display panel
- 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.)
- Active
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses an accurate slim digital pressure gauge, including the interface module that admits air, the sensor function board, connect the winding displacement, the mainboard, LED display panel and shell subassembly, the interface module that admits air is installed on shell subassembly, the sensor function board is installed on the interface module that admits air, connect the winding displacement dress and establish on the mainboard, and be connected with the interface module that admits air, the mainboard is installed in the inside of shell subassembly, and with sensor function board signal connection, the LED display panel is connected with the mainboard, and place the outside of shell subassembly in, the rear portion of sensor function board is provided with the sensor probe, the inside of sensor probe is 4 wheatstone piezo-resistor full-bridge circuit. The utility model discloses simple structure realizes collecting pressure measurement, demonstration and control in an organic whole, has advantages such as small, low power dissipation, long service life, effectively improves the pressure control precision, can observe the transform of pressure size directly perceivedly, is fit for installing in narrower complicated industrial environment.
Description
Technical Field
The utility model relates to a manometer technical field, more specifically say, relate to a precision slim digital pressure table.
Background
The pressure gauge is widely applied to pumps and compressors requiring precise pressure regulation, industrial pneumatic or hydraulic equipment of systems, pressure vessels, pneumatic three-material parts, vacuum breaking valves, automatic equipment of machine tools, mechanical manufacturing and the like.
At present, the appearance volume of common manometer on the market is great mostly, can't install in most narrow complicated places, and can only show the single function of pressure value, can't realize control pressure size and switch control, and the practicality is low.
Disclosure of Invention
An object of the utility model is to overcome the above-mentioned defect among the prior art, provide one kind and realize collecting pressure measurement, show and control in an organic whole, have advantages such as small, the low power dissipation, long service life, and effectively improve the pressure control precision, reach the control accuracy of 0.1kPa level, can be under the minimum environment of atmospheric pressure accurate control and the output of adjusting atmospheric pressure, and simultaneously, can observe the transform of pressure size directly perceivedly, be fit for installing the accurate slim digital pressure table in narrower complicated industrial environment.
In order to achieve the above object, the utility model provides an accurate slim digital pressure gauge, including interface module, sensor function board, connection winding displacement, mainboard, LED display panel and the shell subassembly of admitting air, interface module installs on the shell subassembly of admitting air, the sensor function board is installed on the interface module of admitting air, connect the winding displacement and install on the mainboard to be connected with the interface module that admits air, the mainboard is installed in the inside of shell subassembly, and with sensor function board signal connection, the LED display panel is connected with the mainboard, and places the outside of shell subassembly in, the rear portion of sensor function board is provided with the sensor probe, the inside of sensor probe is 4 wheatstone piezo-resistor circuit full-bridges.
Preferably, the housing assembly includes a housing main body, a housing cover mounted on the housing main body, the air inlet interface module mounted on the housing main body, and a panel mounted above the housing main body and the housing cover and mounted above the LED display panel.
As preferred, still include flexible glue button, button fixed block and translucent cover, the flexible glue button is installed on the LED display panel to pass the panel and outwards stretch out, the button fixed block is installed on the flexible glue button to with flexible glue button and LED display panel fixed connection, the rear end at the flexible glue button is installed to the translucent cover.
Preferably, the portable electronic device further comprises a clamping rail fastener and a shell clamping rail, wherein the clamping rail fastener is arranged at the bottom of the shell main body, and the shell clamping rail is arranged on the clamping rail fastener.
As preferred, still include O type sealing washer and O type circle fixed block, O type sealing washer is installed on the interface module that admits air, O type circle fixed block cover is established on the sensor probe, O type sealing washer is connected fixedly with O type circle fixed block to install sensor function board is fixed on the interface module that admits air.
As preferred, the mainboard includes MCU owner chip, switch and analog output module, copy communication module, key signal module, segment code formula LED scanning display module, Wheatstone full-bridge sensor module and operational amplifier module, MCU owner chip is connected with switch and analog output module, copy communication module, key signal module and segment code formula LED scanning display module respectively, Wheatstone full-bridge sensor module is connected with MCU owner chip through the operational amplifier module.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model has simple structure, which comprises an air inlet interface module, a sensor function board, a connecting flat cable, a mainboard, an LED display panel and a shell component, wherein the air inlet interface module is arranged on the shell component, the sensor function board is arranged on the air inlet interface module, the connecting flat cable is arranged on the mainboard and is connected with the air inlet interface module, the mainboard is arranged inside the shell component and is connected with the sensor function board by signals, the LED display panel is connected with the mainboard and is arranged outside the shell component, a sensor probe is arranged at the rear part of the sensor function board, the sensor probe is internally provided with 4 Wheatstone piezoresistor full-bridge circuits, thereby realizing the integration of pressure measurement, display and control, having the advantages of small volume, low power consumption, long service life and the like, effectively improving the pressure control precision, reaching the control precision of 0.1kPa level, being capable of accurately controlling and regulating the output of air pressure under, meanwhile, the pressure can be intuitively observed through the LED display panel, and the LED pressure measuring device is suitable for being installed in narrow and complex industrial environments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a precision thin digital pressure gauge provided by the present invention;
fig. 2 is a bottom view of the precision thin digital pressure gauge provided by the present invention;
fig. 3 is an exploded structural view of a precision thin digital pressure gauge provided by the present invention;
FIG. 4 is a block diagram of the working principle of a precision thin digital pressure gauge provided by the present invention;
fig. 5 is a schematic diagram of a main board of the precision thin digital pressure gauge provided by the present invention;
fig. 6 is a schematic diagram of a sensor function board of the precision thin digital pressure gauge provided by the present invention;
fig. 7 is a schematic diagram of an LED display panel of the precision thin digital pressure gauge provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Please refer to fig. 1, fig. 2 and fig. 3, the embodiment of the utility model provides a precise thin digital pressure gauge, including air inlet interface module 1, sensor function board 2, connect winding displacement 3, mainboard 4, LED display panel 5 and shell subassembly 6, air inlet interface module 1 is installed on shell subassembly 6, sensor function board 2 is installed on air inlet interface module 1, connect winding displacement 3 and install on mainboard 4, and be connected with air inlet interface module 1, mainboard 4 is installed in shell subassembly 6's inside, and with sensor function board 2 signal connection, LED display panel 5 is connected with mainboard 4, and place in shell subassembly 6's outside, the rear portion of sensor function board 2 is provided with sensor probe 21, sensor probe 21's inside is 4 wheatstone piezoresistor full-bridge circuits, the following combines the figure to carry out detailed description to this embodiment.
As shown in fig. 3, the sensor comprises an air inlet interface module 1, a sensor function board 2, a connecting flat cable 3, a main board 4, an LED display panel 5 and a housing assembly 6, wherein the air inlet interface module 1 is mounted on the housing assembly 6, the sensor function board 2 is mounted on the air inlet interface module 1, the connecting flat cable 3 is mounted on the main board 4 and is connected with the air inlet interface module 1, the main board 4 is mounted inside the housing assembly 6 and is in signal connection with the sensor function board 2, the LED display panel 5 is connected with the main board 4 and is placed outside the housing assembly 6, a sensor probe 21 is arranged at the rear part of the sensor function board 2, 4 wheatstone piezoresistor full-bridge circuits are arranged inside the sensor probe 21, pressure measurement, display and control are integrated, the advantages of small volume, low power consumption, long service life and the like are achieved, the pressure control precision is effectively improved, and the control precision, the output of accurate control and regulation atmospheric pressure can be under the minimum environment of atmospheric pressure, simultaneously, can observe the transform of pressure size directly perceivedly through LED display panel 5, and be fit for installing in narrower complicated industrial environment.
Specifically, the housing assembly 6 includes a housing main body 7, a housing cover 8, and a panel 9, the housing cover 8 being mounted on the housing main body 7, the air intake interface module 1 being mounted on the housing main body 7, and the panel 9 being mounted above the housing main body 7 and the housing cover 8 and being mounted above the LED display panel 5.
Wherein, still include flexible glue button 10, button fixed block 11 and translucent cover 12, flexible glue button 10 installs on LED display panel 5 to pass panel 9 and outwards stretch out, button fixed block 11 installs on flexible glue button 10, thereby with flexible glue button 10 and LED display panel 5 fixed connection, translucent cover 12 installs the rear end at flexible glue button 10.
The better still includes card rail buckle 13 and shell card rail 14, and card rail buckle 13 is installed in the bottom of shell main part 7, and shell card rail 14 is installed at card rail buckle 13, through the integrated design of card rail buckle 13 and shell card rail 14, makes the whole volume of manometer littleer, can install side by side, is convenient for install in narrow complicated environment, can use on the industrial equipment of each difference.
Preferably, the air inlet device further comprises an O-shaped sealing ring 15 and an O-shaped ring fixing block 16, wherein the O-shaped sealing ring 15 is installed on the air inlet interface module 1, the O-shaped ring fixing block 16 is sleeved on the sensor probe 21, and the O-shaped sealing ring 15 is fixedly connected with the O-shaped ring fixing block 16, so that the sensor function board 2 is fixedly installed on the air inlet interface module 1.
Wherein, still possess following structural feature:
unit switching function: can simultaneously switch MPa, KPa, kgf/cm2And six unit pieces of bar and psi are switched back and forth.
Output parameter setting function: different switch threshold values, switch output colors, switch output modes and switch forward and reverse rotation outputs can be set, and analog voltage output is supported by changing circuit elements.
Response time setting function: six response times of 2.5ms, 20ms, 100ms, 500ms, 1000ms and 2000ms can be selected, so that errors caused by user accelerated operation are effectively prevented, and a stable rhythm is established.
Display resolution setting function: the pressure display digit can be changed, and the display flicker can be suppressed.
Setting function of automatic preset function: when the hysteresis mode is selected, the most suitable pressure value can be automatically calculated and set according to the actual action state.
Setting function of fine adjustment of display value: the pressure display value can be manually finely adjusted and can be adjusted within the range of +/-5% R.D.
Setting function of power saving mode: the power-saving mode can be selected, and the purpose of saving power consumption is effectively achieved.
Password input setting function: when the key is locked, the 4-bit operation password is set by selecting the password input function, so that misoperation of other people is prevented.
Copy function: the set values can be copied. Including pressure set points and functional set points. Moreover, when the pressure range, the output specification and the unit specification are the same, the duplication can be performed, and the duplication of 10 devices can be realized at the same time.
And (4) restoring factory setting functions: when it is unclear what state the product is set in, the settings at the time of shipment can be restored.
Peak/valley display function: the update is from the start of power-on to the current highest or lowest pressure.
A zero clearing function: the measured pressure is within a range of + -7% F.S. of factory settings or + -3.5% F.S. of the mixed pressure, and the display value thereof can be adjusted to 0.
An abnormality display function: and the load overcurrent, residual voltage abnormity and pressurization abnormity display are supported.
Display accuracy selection function: by modifying the sensors, pressure switches with pressure display ranges of-105.0 kpa to 105.0kpa, resolution of 0.1kpa, and-105 kpa to 1050kpa, resolution of 1kpa can be selected.
Wherein, as shown in fig. 4, it is a working schematic block diagram of the motherboard 4, and comprises an MCU main chip 41, a switch and analog output module 42, a copy communication module 43, a key signal module 44, a segment code type LED scan display module 45, a wheatstone full bridge sensor module 46 and an operational amplifier module 47, the MCU main chip 41 is respectively connected with the switch and analog output module 42, the copy communication module 43, the key signal module 44 and the segment code type LED scan display module 45, the wheatstone full bridge sensor module 46 is connected with the MCU main chip 41 through the operational amplifier module 47, the wheatstone full bridge sensor module 46 collects original pressure information and converts it into electrical signals, the operational amplifier module 47 amplifies and converts the electrical signals into pressure values and transmits them to the MCU main chip 41, the MCU main chip 41 outputs control signals to the switch and analog output module 42, and displays real numbers and debugging menus through the segment code type LED scan display module 45, the function menu and configuration parameters are adjusted by the key signal module 44.
As shown in fig. 4, 5 and 6, the main board 4 has the following functional design:
reverse connection prevention design: as shown in fig. 4, by the circuit hardware design, the diode D1 is connected in the circuit, so that the circuit has the functions of preventing the reverse connection of the power supply and outputting the reverse connection of the signal, when the power supply is reversely connected, the diode D1 protects the whole circuit device, when the circuit outputs a short circuit or an overload, the signal whether the short circuit or the overload is generated is obtained by the signal change on the sampling resistor, the MCU main chip 41 outputs the protection signal, and the output signal is disconnected.
And (3) reserving external power supply design: 12-24V voltage is converted into 8V power supply voltage by two external reserved pins for output, and the subsequent MIC5205 chip performs linear voltage stabilization to enable the voltage to reach 3.3V and supply to the MCU main chip 41 for use.
And (3) LDO power supply design: the dual LDO linear voltage stabilizer is adopted, two-stage voltage stabilization is adopted, the first stage supplies power to the operational amplifier, the electromagnetic valve and the switch output, and the second stage supplies power to the single chip microcomputer, the sampling conversion chip and the display output, so that the stability of the whole power supply is good, and the output ripple is small.
Scanning and displaying design: the control signal is decoded into 8-bit segment code through the 74LV164 chip for display, bit code control is carried out through the MCU main chip, and switching is carried out in a very short time so as to achieve the purpose of displaying data.
And (3) low power consumption design: the sensor probe is indirectly powered by controlling, the power is supplied when signals are collected, the power is cut off when the signals are processed, and meanwhile the LED display panel 5 is correspondingly controlled, so that the power is saved when the pressure gauge is integrally operated, and the energy consumption is reduced.
And (3) parameter copy design: the communication I/O among the pressure switches is isolated mutually by adopting 3 double triodes, the damage caused by wrong connection is effectively prevented, sequential control detection is carried out in the middle of the program, and the data transmission among the pressure switches is realized by mutual check mode.
During operation, the sensor function board 2 collects differential pressure signals, amplifies the differential signals to the range that the MCU main chip 41 can detect through the operational amplifier module 47, and outputs display signals to the LED display panel 5 after the MCU main chip 41 processes data.
The utility model has simple structure, which comprises an air inlet interface module 1, a sensor function board 2, a connecting flat cable 3, a mainboard 4, an LED display panel 5 and a shell component 6, wherein the air inlet interface module 1 is arranged on the shell component 6, the sensor function board 2 is arranged on the air inlet interface module 1, the connecting flat cable 3 is arranged on the mainboard 4 and is connected with the air inlet interface module 1, the mainboard 4 is arranged inside the shell component 6 and is connected with the sensor function board 2 by signals, the LED display panel 5 is connected with the mainboard 4 and is arranged outside the shell component 6, a sensor probe 21 is arranged at the rear part of the sensor function board 2, 4 Wheatstone piezoresistor full-bridge circuits are arranged inside the sensor probe 21, pressure measurement, display and control are integrated, the pressure sensor has the advantages of small volume, low power consumption, long service life and the like, and effectively improves the pressure, the control accuracy of 0.1kPa level is achieved, the output of air pressure can be accurately controlled and adjusted in the environment with extremely small air pressure, meanwhile, the change of the pressure can be visually observed through the LED display panel 5, and the LED pressure sensor is suitable for being installed in narrow and complex industrial environments.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalent substitutions and all fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a precision slim digital pressure gauge which characterized in that: comprises an air inlet interface module (1), a sensor function board (2), a connecting flat cable (3), a main board (4), an LED display panel (5) and a shell component (6), the air inlet interface module (1) is arranged on the shell component (6), the sensor function board (2) is arranged on the air inlet interface module (1), the connecting flat cable (3) is arranged on the main board (4), and is connected with the air inlet interface module (1), the main board (4) is arranged in the shell component (6), and is connected with the sensor function board (2) by signals, the LED display board (5) is connected with the main board (4), and is arranged outside the shell component (6), the rear part of the sensor function board (2) is provided with a sensor probe (21), the sensor probe (21) is internally provided with 4 Wheatstone piezoresistor full-bridge circuits.
2. The precision thin digital pressure gauge according to claim 1, wherein: shell subassembly (6) include housing main part (7), housing cover (8) and panel (9), housing cover (8) are installed on housing main part (7), interface module (1) that admits air is installed on housing main part (7), panel (9) are installed in the top of housing main part (7) and housing cover (8) to install in the top of LED display panel (5).
3. The precision thin digital pressure gauge according to claim 2, wherein: still include flexible glue button (10), button fixed block (11) and translucent cover (12), flexible glue button (10) is installed on LED display panel (5) to pass panel (9) and outwards stretch out, install on flexible glue button (10) button (11), thereby press button (10) and LED display panel (5) fixed connection with the flexible glue, the rear end at flexible glue button (10) is installed in translucent cover (12).
4. The precision thin digital pressure gauge according to claim 2, wherein: still include card rail buckle (13) and shell card rail (14), install in the bottom of shell main part (7) card rail buckle (13), shell card rail (14) are installed on card rail buckle (13).
5. The precision thin digital pressure gauge according to claim 1, wherein: still include O type sealing washer (15) and O type circle fixed block (16), install on the interface module (1) admits air O type sealing washer (15), O type circle fixed block (16) cover is established on sensor probe (21), O type sealing washer (15) are connected fixedly with O type circle fixed block (16) to install sensor function board (2) are fixed on the interface module (1) of admitting air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920137936.7U CN211824855U (en) | 2019-01-28 | 2019-01-28 | Precise thin digital pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920137936.7U CN211824855U (en) | 2019-01-28 | 2019-01-28 | Precise thin digital pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211824855U true CN211824855U (en) | 2020-10-30 |
Family
ID=72994952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920137936.7U Active CN211824855U (en) | 2019-01-28 | 2019-01-28 | Precise thin digital pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211824855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031495A (en) * | 2021-04-30 | 2021-06-25 | 珠海广浩捷科技股份有限公司 | Multi-path acquisition system of vacuum pressure gauge |
-
2019
- 2019-01-28 CN CN201920137936.7U patent/CN211824855U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031495A (en) * | 2021-04-30 | 2021-06-25 | 珠海广浩捷科技股份有限公司 | Multi-path acquisition system of vacuum pressure gauge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0292606B1 (en) | Pressure meter | |
| US7042341B2 (en) | Device including light emitting diode as light sensor and light source | |
| CN109854560B (en) | High-voltage electric proportional valve | |
| CA2468613C (en) | Pressure gage and switch | |
| US4748845A (en) | Tire pressure gauge | |
| CN211824855U (en) | Precise thin digital pressure gauge | |
| JP2004522961A5 (en) | ||
| US4704901A (en) | Tire pressure gauge | |
| JP2007537442A (en) | Electronic equipment movement / barometer | |
| CN102968198A (en) | Touch control pen | |
| US20080105058A1 (en) | Vacuum regulator with two gauges | |
| US8335939B2 (en) | Notebook computer | |
| US7034700B2 (en) | Solid state electronic pressure switch | |
| CN109632176A (en) | A kind of slim digital pressure gauge of precision | |
| US20080232980A1 (en) | Digit button-operated air compressor output control structure | |
| WO2001000983A1 (en) | Two stage gauge with electrical signal output | |
| CN107478377B (en) | Double-picture display digital barometer | |
| CN101779260A (en) | Electronic vacuum switch with main parameters quickly settable also during operation of the plant under control | |
| KR200312926Y1 (en) | Digital Pressure Gauge | |
| CN212872770U (en) | Pull-load test fixture | |
| CN101074009B (en) | Tyre digital gas-filling meter | |
| CN217107376U (en) | Electronic control system of integrated air suspension compressor | |
| US5831171A (en) | Electronic pressure gauge for automatically controlling the fluid pressure of a controlled device with a predetermined range | |
| JP2546639B2 (en) | Pressure gauge | |
| US6734800B1 (en) | Atmospheric low pressure alarm system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |