CN106404102A - Liquidometer information collection system - Google Patents
Liquidometer information collection system Download PDFInfo
- Publication number
- CN106404102A CN106404102A CN201610473696.9A CN201610473696A CN106404102A CN 106404102 A CN106404102 A CN 106404102A CN 201610473696 A CN201610473696 A CN 201610473696A CN 106404102 A CN106404102 A CN 106404102A
- Authority
- CN
- China
- Prior art keywords
- liquidometer
- liquid level
- digital
- level gauge
- information acquisition
- 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
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
Abstract
The application discloses a liquidometer information collection system which comprises a digital liquidometer, a power source module and a PC, wherein a pressure sensor and a control module are disposed inside the digital liquidometer, the pressure sensor collects signals and then send the signals to the control module, and the control module processes the collected signals and outputs analog signals of 4-20mA; the power source module provides direct current voltage input for the digital liquidometer; and the PC carries out communication with the digital liquidometer via an HART Modem interface. The system disclosed by the embodiment conducts the communication with the digital liquidometer based on an HART protocol, no distance restriction exists, and the transmission distance is short; and a shielding shell is disposed outside the liquidometer and is grounded, so that the liquidometer can be protected and is resistant to interference.
Description
Technical field
The application is related to a kind of liquid level gauge information acquisition system, can be applicable to liquid level, volume and the matter of liquid
The measurement of amount.
Background technology
Magnetostriction liquidometer is one kind of level measurement instrument, be widely used in electric power, metallurgy, petrochemical industry,
The industries such as light textile, food, medicine.With field bus technique industrial process control field application,
The networking of automated system, bussed be big trend, original magnetostriction liquidometer pass through 4～
20mA analog signal controls it is impossible to carry out digital communication it is impossible to meet the requirement of modern industry system.
Because HART protocol has compatible digital Signal and analog signal, do not affecting simulation letter
Number control on the premise of can carry out digital communication, have scene and remote parameter monitoring function, reduce
System cost, raising control accuracy and system reliability aspect have incomparable advantage.
In addition, also there is the technical problems such as safety coefficient is low, antijamming capability is weak in traditional liquid level gauge.
Content of the invention
It is an object of the invention to provide a kind of liquid level gauge information acquisition system, of the prior art to overcome
Not enough.
For achieving the above object, the present invention provides following technical scheme：
The embodiment of the present application discloses a kind of liquid level gauge information acquisition system, including：
Digital level indicator, it is internally provided with pressure sensor and control module, and this pressure sensor gathers
Control module is sent into, control module is processed and exported the mould of 4～20mA to the signal of collection after signal
Intend signal；
Power module, provides DC voltage input for digital level indicator；
PC, by being communicated between HART Modem interface and digital level indicator.
Preferably, in above-mentioned liquid level gauge information acquisition system, described digital level indicator outer side seal has
Metal shielding.
Preferably, in above-mentioned liquid level gauge information acquisition system, described metal shielding ground connection.
Preferably, in above-mentioned liquid level gauge information acquisition system, described power module is digital level indicator
The DC voltage input of 10.5～45V is provided.
Preferably, the circuit in above-mentioned liquid level gauge information acquisition system, outside described digital level indicator
On be provided with ammeter.
Preferably, the circuit in above-mentioned liquid level gauge information acquisition system, outside described digital level indicator
It is provided with a resistance, described PC is connected to the two ends of described resistance.
Preferably, in above-mentioned liquid level gauge information acquisition system, described resistance is 215～285 Ω.
Compared with prior art, it is an advantage of the current invention that：
(1), basis is new is communicated with digital level indicator based on HART protocol, and no distance limits, and passes
Defeated apart from short；
(2), it is provided with shielding case outside liquid level gauge and is grounded, protection and jamproof effect can be played.
Brief description
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to reality
The accompanying drawing applying required use in example or description of the prior art be briefly described it should be apparent that, below
Accompanying drawing in description is only some embodiments described in the application, for those of ordinary skill in the art
For, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 show the principle schematic of liquid level gauge information acquisition system in the specific embodiment of the invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Detailed describes it is clear that described embodiment is only a part of embodiment of the present invention, rather than entirely
The embodiment in portion.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work on the premise of the every other embodiment that obtained, broadly fall into the scope of protection of the invention.
In conjunction with shown in Fig. 1, liquid level gauge information acquisition system includes digital level indicator 1, power module and PC
Machine 2.
Digital level indicator 1, it is internally provided with pressure sensor and control module, and this pressure sensor gathers
Control module is sent into, control module is processed and exported the mould of 4～20mA to the signal of collection after signal
Intend signal.
Control module can include microprocessor (MCU), and this MCU can include CPU
(Central Processing Unit, CPU), read-only memory module (read-only memory, ROM),
Random storage module (random access memory, RAM), time block, digital-to-analogue conversion mould
Block (A/D converter) and plural input/output port.Certainly, control module can also adopt other
The integrated circuit of form, such as：Application-specific IC (Application Specific Integrated
Circuit, ASIC) or field programmable gate arrays (Field Programmable Gate Array, FPGA)
Deng.
Power module, provides DC voltage input for each operation element in digital level indicator 1.
Preferably, DC voltage size is 10.5～45V.
PC 2, by being communicated between HART Modem interface and digital level indicator 1.
In this technical scheme, PC is communicated with digital level indicator based on HART protocol, no distance limit
System, transmission range is short.
In this technical scheme, HART communication interface circuit detects and is superimposed upon on 4～20mA direct current signal
External control signal, demodulate the data signal of superposition, send PC to and processed；Process
Alternating signal that result requires for HART signal through HART communication interface circuit modulation conversion is simultaneously folded
It is added on direct current signal, thus realizing the digital communication with external information.
In the present embodiment, main variable and control information are transmitted by 4～20mA, in case of need,
Other procedure parameters, device configuration, calibration and configuration info pass through HART protocol with the side of digital communication
Formula accesses.
Digital level indicator 1 outer side seal has metal shielding 5.Metal shielding 5 is grounded.
In this technical scheme, it is provided with shielding case outside liquid level gauge and is grounded, protection can be played and resist dry
The effect disturbed.
Ammeter 3 is provided with the circuit outside digital level indicator 1.
Circuit outside digital level indicator 1 is provided with a resistance 4, and PC 2 is connected to the two ends of resistance 4.
Resistance is preferably 215～285 Ω.
It should be noted that herein, term " inclusion ", "comprising" or its any other variant meaning
Covering comprising of nonexcludability so that include a series of process of key elements, method, article or
Equipment not only includes those key elements, but also includes other key elements being not expressly set out, or also wraps
Include as this process, method, article or the intrinsic key element of equipment.
The above is only the specific embodiment of the application it is noted that general for the art
For logical technical staff, on the premise of without departing from the application principle, some improvement and profit can also be made
Decorations, these improvements and modifications also should be regarded as the protection domain of the application.
Claims (7)
1. a kind of liquid level gauge information acquisition system is it is characterised in that include：
Digital level indicator, it is internally provided with pressure sensor and control module, and this pressure sensor gathers
Control module is sent into, control module is processed and exported the mould of 4～20mA to the signal of collection after signal
Intend signal；
Power module, provides DC voltage input for digital level indicator；
PC, by being communicated between HART Modem interface and digital level indicator.
2. liquid level gauge information acquisition system according to claim 1 it is characterised in that：Described numeral
Liquid level gauge outer side seal has metal shielding.
3. liquid level gauge information acquisition system according to claim 2 it is characterised in that：Described metal
Shielding case is grounded.
4. liquid level gauge information acquisition system according to claim 1 it is characterised in that：Described power supply
Module provides the DC voltage input of 10.5～45V for digital level indicator.
5. liquid level gauge information acquisition system according to claim 1 it is characterised in that：Described numeral
It is provided with ammeter on circuit outside liquid level gauge.
6. liquid level gauge information acquisition system according to claim 1 it is characterised in that：Described numeral
Circuit outside liquid level gauge is provided with a resistance, and described PC is connected to the two ends of described resistance.
7. liquid level gauge information acquisition system according to claim 6 it is characterised in that：Described resistance
Resistance is 215～285 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473696.9A CN106404102A (en) | 2016-06-25 | 2016-06-25 | Liquidometer information collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473696.9A CN106404102A (en) | 2016-06-25 | 2016-06-25 | Liquidometer information collection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106404102A true CN106404102A (en) | 2017-02-15 |
Family
ID=58006189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610473696.9A Pending CN106404102A (en) | 2016-06-25 | 2016-06-25 | Liquidometer information collection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106404102A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706411A (en) * | 2012-06-15 | 2012-10-03 | 上海自动化仪表股份有限公司 | Magnetic position material level meter based on HART (highway addressable remote transducer) communication |
| CN202720022U (en) * | 2012-06-15 | 2013-02-06 | 上海自动化仪表股份有限公司 | HART (Highway Addressable Remote Transducer) communication-based magnetostrictive liquid level gauge |
| CN202720025U (en) * | 2012-06-15 | 2013-02-06 | 上海自动化仪表股份有限公司 | Electric buoy level gauge based on highway addressable remote transducer (HART) communication |
| CN104614042A (en) * | 2014-12-31 | 2015-05-13 | 重庆川仪自动化股份有限公司 | Guided wave radar level meter |
| CN205691198U (en) * | 2016-06-25 | 2016-11-16 | 苏州赛智达智能科技有限公司 | Liquidometer information acquisition system |
-
2016
- 2016-06-25 CN CN201610473696.9A patent/CN106404102A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706411A (en) * | 2012-06-15 | 2012-10-03 | 上海自动化仪表股份有限公司 | Magnetic position material level meter based on HART (highway addressable remote transducer) communication |
| CN202720022U (en) * | 2012-06-15 | 2013-02-06 | 上海自动化仪表股份有限公司 | HART (Highway Addressable Remote Transducer) communication-based magnetostrictive liquid level gauge |
| CN202720025U (en) * | 2012-06-15 | 2013-02-06 | 上海自动化仪表股份有限公司 | Electric buoy level gauge based on highway addressable remote transducer (HART) communication |
| CN104614042A (en) * | 2014-12-31 | 2015-05-13 | 重庆川仪自动化股份有限公司 | Guided wave radar level meter |
| CN205691198U (en) * | 2016-06-25 | 2016-11-16 | 苏州赛智达智能科技有限公司 | Liquidometer information acquisition system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |
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| RJ01 | Rejection of invention patent application after publication |