CN205120218U - Automatic refrigerant weighing system of high accuracy - Google Patents
Automatic refrigerant weighing system of high accuracy Download PDFInfo
- Publication number
- CN205120218U CN205120218U CN201520923567.6U CN201520923567U CN205120218U CN 205120218 U CN205120218 U CN 205120218U CN 201520923567 U CN201520923567 U CN 201520923567U CN 205120218 U CN205120218 U CN 205120218U
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- China
- Prior art keywords
- microcontroller
- load cells
- signal
- refrigerant
- weighing system
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Abstract
The utility model discloses an automatic refrigerant weighing system of high accuracy, including microcontroller, input and output modules, storage module, weighing sensor, signal conditioning circuit, valve drive circuit and electric valve, weighing sensor is connected through signal conditioning circuit and microcontroller, and electric valve is connected through valve drive circuit and microcontroller, and input and output modules and storage module connect microcontroller respectively, and the refrigerant container is connected the induction -pipe and is placed in on the weighing sensor, weighing sensor gathers the weight signal of refrigerant container, and the signal sends microcontroller to after signal conditioning circuit handles, and microcontroller is according to current weight signal generation drive instruction and send valve drive circuit to, and valve drive circuit is according to the operation of drive command control electric valve to change the transport flow of induction -pipe. The utility model discloses an automated control of refrigerant filling to the low problem of precision has been solved.
Description
Technical field
The utility model belongs to automation control area, particularly a kind of High Precision Automatic refrigerant Weighing system.
Background technology
Carry transport for refrigerant, large-scale refrigerant storage equipment is also not suitable for, and usually needs to carry out filling to refrigerant, so need a kind of small-sized refrigerant tank of the transport that can be easy to carry, in this, as the transmission medium of refrigerant.Some producer adopts manual weighing, extremely wastes time and energy, and weigh is not easy to control, and degree of accuracy is difficult to ensure.The automatic weighing liquid feeding system that some patent then adopting publication number to be CN101581520A, CN103090937A, CN2246234Y, CN101761772A or patent application document are introduced, although meet robotization to weigh function, but these files all adopt solenoid valve to control as output, solenoid valve can only output switch amount, precisely cannot control flow, and all do not adopt control method to be optimized, cause weighing precision unsatisfactory, easily pollute and waste.
Utility model content
In order to solve the technical matters that above-mentioned background technology proposes, the utility model aims to provide a kind of High Precision Automatic refrigerant Weighing system, achieves Automated condtrol refrigerant filling, and solves the low problem of precision.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is:
A kind of High Precision Automatic refrigerant Weighing system, comprise microcontroller, input/output module, memory module, LOAD CELLS, signal conditioning circuit, valve driving circuit and electrically operated valve, described LOAD CELLS is connected with microcontroller through signal conditioning circuit, described electrically operated valve is connected with microcontroller through valve driving circuit, described input/output module is connected microcontroller respectively with memory module, and refrigerant container connects snorkel and is placed in LOAD CELLS; Described LOAD CELLS gathers the weight signal of refrigerant container, signal sends microcontroller to after signal conditioning circuit process, microcontroller generates driving instruction according to current weight signal and sends valve driving circuit to, valve driving circuit controls electrically operated valve running according to driving instruction, thus changes the feed flow of snorkel.
Wherein, described signal conditioning circuit comprises signal amplifier and analog to digital converter, and the input end of described signal amplifier connects LOAD CELLS, the input end of the output terminal connection mode number converter of signal amplifier, and the output terminal of analog to digital converter connects microcontroller.
Based on a kind of preferred version of technique scheme, described LOAD CELLS adopts S type LOAD CELLS.
Based on a kind of preferred version of technique scheme, described microcontroller adopts single-chip microcomputer.
Based on a kind of preferred version of technique scheme, described input/output module is touch-screen.
Adopt the beneficial effect that technique scheme is brought:
(1) the utility model adopts electrically operated valve to control filling of refrigerant, and carrys out the aperture of Discrete control electrically operated valve according to refrigerant weight, thus realizes high-precision weighing, and when full scale is 50kg, precision is up to 0.01kg;
(2) the utility model can control weighed amount automatically, and measuring accuracy is very high, not by the impact of steel cylinder size weight, is not only applicable to refrigerant and weighs, also can be used for other highly pressurised liquids and weigh;
(3) device of the present utility model all adopts integrated chip to form, and is convenient for carrying and is easy to operation.
Accompanying drawing explanation
Fig. 1 is the block diagram of system of the present utility model.
Embodiment
Below with reference to accompanying drawing, the technical solution of the utility model is described in detail.
The block diagram of system of the present utility model as shown in Figure 1, a kind of High Precision Automatic refrigerant Weighing system, comprise microcontroller, input/output module, memory module, LOAD CELLS, signal conditioning circuit, valve driving circuit and electrically operated valve, described LOAD CELLS is connected with microcontroller through signal conditioning circuit, described electrically operated valve is connected with microcontroller through valve driving circuit, described input/output module is connected microcontroller respectively with memory module, and refrigerant container connects snorkel and is placed in LOAD CELLS; Described LOAD CELLS gathers the weight signal of refrigerant container, signal sends microcontroller to after signal conditioning circuit process, microcontroller generates driving instruction according to current weight signal and sends valve driving circuit to, valve driving circuit controls electrically operated valve running according to driving instruction, thus changes the feed flow of snorkel.
In the present embodiment, described signal conditioning circuit comprises signal amplifier and analog to digital converter, the input end of described signal amplifier connects LOAD CELLS, the input end of the output terminal connection mode number converter of signal amplifier, and the output terminal of analog to digital converter connects microcontroller.
In the present embodiment, described LOAD CELLS adopts S type LOAD CELLS.
In the present embodiment, described microcontroller adopts single-chip microcomputer.
In the present embodiment, described input/output module is touch-screen.
Principle of work of the present utility model:
Before refrigerant is filling, LOAD CELLS measures the weight of refrigerant container itself, and sends this weight signal to microcontroller by signal conditioning circuit, microcontroller by the weight data of this refrigerant container stored in memory module.Then the controling parameters of microcontroller is set by input/output module, comprises target weight.Backward filling containers refrigerant, LOAD CELLS constantly gathers current weight and sends microcontroller to, gravimetric value after the weight of current time is deducted the weight of container own by microcontroller compares with the target weight of setting, corresponding driving instruction is generated according to comparative result, when both differences reduce gradually, the aperture that valve driving circuit controls electrically operated valve according to driving instruction also reduces thereupon gradually, thus realizes real-time, accurate coolant injection.
Realize above embodiment and be only explanation technological thought of the present utility model; protection domain of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technical scheme basis is done, all falls within the utility model protection domain.
Claims (5)
1. a High Precision Automatic refrigerant Weighing system, it is characterized in that: comprise microcontroller, input/output module, memory module, LOAD CELLS, signal conditioning circuit, valve driving circuit and electrically operated valve, described LOAD CELLS is connected with microcontroller through signal conditioning circuit, described electrically operated valve is connected with microcontroller through valve driving circuit, described input/output module is connected microcontroller respectively with memory module, and refrigerant container connects snorkel and is placed in LOAD CELLS; Described LOAD CELLS gathers the weight signal of refrigerant container, signal sends microcontroller to after signal conditioning circuit process, microcontroller generates driving instruction according to current weight signal and sends valve driving circuit to, valve driving circuit controls electrically operated valve running according to driving instruction, thus changes the feed flow of snorkel.
2. a kind of High Precision Automatic refrigerant Weighing system according to claim 1, it is characterized in that: described signal conditioning circuit comprises signal amplifier and analog to digital converter, the input end of described signal amplifier connects LOAD CELLS, the input end of the output terminal connection mode number converter of signal amplifier, the output terminal of analog to digital converter connects microcontroller.
3. a kind of High Precision Automatic refrigerant Weighing system according to claim 1, is characterized in that: described LOAD CELLS adopts S type LOAD CELLS.
4. a kind of High Precision Automatic refrigerant Weighing system according to claim 1, is characterized in that: described microcontroller adopts single-chip microcomputer.
5. a kind of High Precision Automatic refrigerant Weighing system according to claim 1, is characterized in that: described input/output module is touch-screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520923567.6U CN205120218U (en) | 2015-11-19 | 2015-11-19 | Automatic refrigerant weighing system of high accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520923567.6U CN205120218U (en) | 2015-11-19 | 2015-11-19 | Automatic refrigerant weighing system of high accuracy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205120218U true CN205120218U (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520923567.6U Expired - Fee Related CN205120218U (en) | 2015-11-19 | 2015-11-19 | Automatic refrigerant weighing system of high accuracy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205120218U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981879A (en) * | 2018-08-28 | 2018-12-11 | 江苏省精创电气股份有限公司 | A kind of portable coolant injection weighing tool and its control method |
| CN112439364A (en) * | 2020-12-04 | 2021-03-05 | 浙江中控技术股份有限公司 | High-precision automatic liquid feeding device and method |
-
2015
- 2015-11-19 CN CN201520923567.6U patent/CN205120218U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981879A (en) * | 2018-08-28 | 2018-12-11 | 江苏省精创电气股份有限公司 | A kind of portable coolant injection weighing tool and its control method |
| CN112439364A (en) * | 2020-12-04 | 2021-03-05 | 浙江中控技术股份有限公司 | High-precision automatic liquid feeding device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20171119 |