CN207067751U - A kind of miniature constant current solution feed system in laboratory - Google Patents
A kind of miniature constant current solution feed system in laboratory Download PDFInfo
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- CN207067751U CN207067751U CN201721069417.9U CN201721069417U CN207067751U CN 207067751 U CN207067751 U CN 207067751U CN 201721069417 U CN201721069417 U CN 201721069417U CN 207067751 U CN207067751 U CN 207067751U
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- controller
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- display screen
- triple valve
- liquid level
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Abstract
The utility model discloses a kind of miniature constant current solution feed system in laboratory, the syringe pump apparatus and display screen that system includes storage device, is fed in high precision for continuous and stable, the syringe pump apparatus includes multigroup syringe and a controller, multigroup syringe is connected with controller, and the display screen is connected with controller；Every group of syringe is provided with a triple valve, and the storage device connects triple valve corresponding to every group of syringe by feeding pipeline；The controller includes 485 communication interfaces, temperature sensor interface, liquid level sensor interface, Ethernet interface, relay, display screen interface, WIFI module and 433MHz wireless modules.Can convenient remote wireless control feeding system by the technical solution of the utility model.
Description
Technical field
The technical field of feeding system is the utility model is related to, more particularly, to a kind of miniature constant current solution feed in laboratory
System.
Background technology
Traditional laboratory constant current feeding system is using material pot-peristaltic pump system, material pot-gear pumping system, solvent
Flow can be adjusted by peristaltic pump or gear pump at any time, and to meet requirement of experiment, the substantial amounts of time has been saved for experiment,
Substantial amounts of human and material resources, financial resources are saved, its advantage is self-evident, and it also avoid the behaviour of the mistake in experimentation
Make.But two above system there are the following problems influence solvent constant current effect：(1) peristaltic pump is due to work characteristics, in flow
Control on pulse problem be present, add experiment interference and sebific duct frequent extruding influence feed and loss；(2) gear pump
It is inconsistent in identical rotating speed down-off, it is necessary to which additional glass spinner flowmeter carrys out stationary flow because of the individual difference of processing technology
Amount.
Syringe pump does not have pulse problem, can provide steady high-precision flow, and the alternation of multi-stage injection pump can be with
Continuous feeding is realized, is used for the miniature constant current solvent feeding system in laboratory；And common syringe pump does not possess multi-stage injection pump
Cooperate and the function of remote control injection is, it is necessary to which operating personnel scene is configured and operated to syringe pump, and chemical industry is real
Test the inflammable solvent having, explosive, radioactivity, poisonous to operating personnel, harmful.
The syringe pump for being capable of remote control that in the market occurs, it is very long typically to carry out remote control or use with remote control
Special wire syringe pump and console are connected carry out remote control, system is to the distance between operator and syringe pump
There is very big limitation, and if the same time needs multichannel to inject, very big inconvenience can be brought to operation.
When some harsh experiment conditions need the device of high-precision pulse free, other feeder apparatus, which can not meet to use, to be wanted
Ask, such as dynamics extraction equipment.
Utility model content
The shortcomings that main purpose of the present utility model is to overcome prior art and deficiency, there is provided a kind of miniature perseverance in laboratory
Solvent feeding system is flowed, can be with remote wireless control feeding system.
In order to achieve the above object, the utility model uses following technical scheme：
The utility model discloses a kind of miniature constant current solution feed system in laboratory, including storage device, for continuous
The steady syringe pump apparatus and display screen being fed in high precision, the syringe pump apparatus include multigroup syringe and a controller,
Multigroup syringe is connected with controller, and the display screen is connected with controller；Every group of syringe is provided with a triple valve, institute
State storage device and triple valve corresponding to every group of syringe is connected by feeding pipeline；The controller is used for the stream for controlling solution
Speed, temperature and liquid level, the controller include 485 communication interfaces, temperature sensor interface, liquid level sensor interface, Ethernet
Interface, relay, display screen interface, WIFI module and 433MHz wireless modules, 485 communication interfaces of the controller with
Multigroup syringe connection, the display screen interface are connected with display screen, and the Ethernet interface is connected with Ethernet；It is described
WIFI module with WIFI wireless routers by being wirelessly connected；Described 433MHz wireless modules by 433MHz wireless networks with
433MHz radio network gateways connect.
As preferable technical scheme, 485 communication interface is connected by 2 groups of signal wires with multigroup syringe；
The display screen interface is connected by 4 groups of signal wires with display screen；The Ethernet interface passes through 4 groups of signal wires and Ethernet
Connection.
It is provided with as preferable technical scheme, in the storage device and the liquid level of storage device monitor and report in real time
Alert liquid level sensor, the liquid level sensor interface connection of the liquid level sensor and controller.
As preferable technical scheme, in addition to the filter for being filtered to the solution of storage device conveying,
Described filter one end is connected by feeding pipeline with storage device, and the other end passes through feeding pipeline corresponding with syringe three
Port valve connects.
As preferable technical scheme, filter is provided with inside the filter, for filtering out the impurity in solution.
As preferable technical scheme, the filter bottom is provided with heater, the heater by Control,
The relay is connected by 3 groups of signal wires with the controller；The bottom of the filter is provided with for detecting solution
The temperature sensor of temperature, the temperature sensor are connected by temperature sensor interface with controller.
As preferable technical scheme, the controller assign switch order give multigroup syringe triple valve, described three
Port valve is two, for controlling the flow direction of solution, and ensures the continuity of feed；Two triple valve open and close in turn, if
One triple valve is charging, then another triple valve is discharging.
As preferable technical scheme, the display screen is liquid crystal touch display screen, and local control and long-range control can be achieved
The switching of system, height of liquid level position is set and alarm, temperature setting, display and alarm, temperature linearity amendment and solvent heating are set
Put.
The invention also discloses a kind of method of feeding of the miniature constant current solution feed system in laboratory, including following steps
Suddenly：
S1, feed information is set by long-range or local operation, the feed information include height of liquid level position, temperature,
And flow velocity；If selection, by remotely located, feed information passes through Ethernet, WIFI routers or 433 wireless network transmissions
To the controller of syringe pump apparatus；If selection, by being locally located, feed information is transmitted to syringe pump by 4 groups of signal wires and filled
The controller put；
S2, controller, which receive, sets corresponding parameters to carry out multigroup syringe of syringe pump apparatus after injection information
The temperature information of setting is transferred to temperature sensor by injection, the controller, and temperature sensor is to the solution in filter
Monitored in real time, and by the heater button of Control filter, the filter is used to filter storing dress
The solution of offer is put, the liquid level information of setting is transferred to liquid level sensor by the controller, and liquid level sensor is to storage device
Solution level monitored in real time；
S3, temperature sensor, liquid level sensor are by monitoring result Real-time Feedback to controller, and distinct feed-back is to long-range meter
Calculation machine or local display, realize the real-time monitoring remotely-or locally to the injection of multigroup syringe.
As preferable technical scheme, in step S1, when selecting remotely located, operator sets feed to join on computers
Number, the parameter by Ethernet, WIFI routers or 433 wireless network transmissions to the Ethernet interface of controller, WIFI module,
Or 433MHz wireless modules；Controller receives feed ginseng by Ethernet interface, WIFI modules or 433MHz wireless modules
Number, 485 communication interfaces of controller, which are transmitted feeding speed to multigroup syringe, controller by 2 groups of signal wires, passes through temperature
Sensor interface transmits temperature information to temperature sensor, temperature sensor monitors real time temperature, if temperature does not reach setting
Temperature, controller open heater by relay, and controller is transmitted liquid level information to liquid level by liquid level sensor interface
Sensor, liquid level sensor monitor height of liquid level in real time.
The utility model compared with prior art, has the following advantages that and beneficial effect：
(1) the utility model can be operated with long distance wireless, accomplish man-machine isolation completely, be avoided poisonous, harmful, inflammable, easy
Injuries quick-fried or even that radioactivity solvent is to operating personnel；
(2) liquid level and temperature sensor to the liquid level and fluid temperature of material pot can monitor and alarm in real time；
(3) the utility model syringe pump feed precision is high, and can connect uninterrupted feed；
(4) the utility model syringe pump can change the flow range of feeding system, and meet by multistage arbitrarily parallel connection
User's request；
(5) the utility model supports parameter setting of the local/remote to syringe pump：The number of syringe pump, size, output stream
Amount.
Brief description of the drawings
Fig. 1 is system structure diagram of the present utility model；
Fig. 2 is controller architecture schematic diagram of the present utility model；
Fig. 3 is multigroup syringe connection diagram of the present utility model；
Fig. 4 is the ethernet segment circuit diagram of the utility model controller；
Fig. 5 is the sensor data acquisition partial circuit diagram of the utility model controller；
Fig. 6 is the WIFI wireless portions and 433MHz radio-circuit figures of the utility model controller；
Fig. 7 is power management management and the RS485 telecommunication circuit figures of the utility model controller.
Drawing reference numeral explanation：1st, syringe pump apparatus；2nd, filter；3rd, storage device；4th, display screen；5th, level sensing
Device；6th, temperature sensor；7th, heater；8th, syringe A；9 syringe B；10th, triple valve A；11st, triple valve B.
Embodiment
The utility model is described in further detail with reference to embodiment and accompanying drawing, but implementation of the present utility model
Mode not limited to this.
As shown in Figure 1 and Figure 2, the miniature constant current solvent feeding system in a kind of laboratory of the present embodiment, including syringe pump apparatus 1,
Storage device 3, display screen 4 and liquid level sensor 5, the syringe pump apparatus 1 includes multigroup syringe and a controller, described
Multigroup syringe is connected with controller, and the display screen 4 is connected with controller；Every group of syringe is provided with a triple valve, described
Storage device 3 connects triple valve corresponding to every group of syringe by feeding pipeline.It is provided with the storage device 3 to storage device
Liquid level carry out in real time monitor and alarm liquid level sensor 5, the liquid level sensor interface of the liquid level sensor and controller
Connection.
As a kind of more excellent scheme of the present embodiment, it is additionally provided with above-mentioned feeding system for being conveyed to storage device
The filter 2 that solution is filtered, described one end of filter 2 are connected by feeding pipeline with storage device 3, and the other end leads to
Cross feeding pipeline triple valve connection corresponding with syringe.Filter is provided with inside the filter, for filtering out solution
In impurity.The bottom of filter 2 is provided with heater 7, and the heater 7 passes through 3 by Control, the relay
Group signal wire is connected with the controller.The bottom of the filter is provided with the temperature sensor for detecting solution temperature
6, the temperature sensor is connected by temperature sensor interface with controller.
In the present embodiment, syringe pump apparatus includes two groups of syringe pumps and controller, the controller assign switch order to
The triple valve of multigroup syringe, the triple valve is two, for controlling the flow direction of solution, and ensures the continuity of feed；Two
The open and close in turn of individual triple valve, if a triple valve is charging, another triple valve is discharging, as shown in figure 3, injection
Device A 8 is connected with triple valve A 10, and syringe B 9 connects with triple valve B11, and triple valve A and triple valve B are controlled by the controller.
In the present embodiment, the controller includes 485 communication interfaces, power interface, temperature sensor interface, level sensing
Device interface, Ethernet interface, relay, display screen interface, WIFI module and 433MHz wireless modules.
485 communication interfaces of the controller are connected by 2 groups of signal wires with the syringe pump, and controller is passed by temperature
Sensor interface is connected with the temperature sensor, and controller is connected by liquid level sensor interface with the liquid level sensor, is shown
Display screen interface is connected by 4 groups of signal wires with display screen, and Ethernet interface is connected by 4 groups of signal wires with Ethernet, relay
It is connected by 3 groups of signal wires with heater, WIFI module with WIFI wireless routers by being wirelessly connected, 433MHz wireless modules
It is connected by 433MHz wireless networks with 433MHz radio network gateways.
The liquid level sensor 5 to the liquid level of storage device monitor and alarm in real time, and temperature sensor fills to filtering
Solvent temperature in putting monitor and alarm in real time, the switch of Control heater, WIFI and 433MHz wireless modules
For realizing syringe pump wireless remote operation.
The display screen 4 can realize that the switching of local control and remote control, height of liquid level position set and alarmed, temperature
Setting, display and alarm, temperature linearity amendment, solvent heating.
As shown in figure 4, the ethernet communication module is led to being connected before main control module MCU by RMII modes
Letter, the communication mode only occupy a small amount of I/O interfaces of MCU.
PT100 Acquisition Circuits are illustrated in figure 5, signal is amplified by LM2904 operational amplifiers, then accesses master control
Chip, L3 is power inductance in the Acquisition Circuit, is strobed, and reduces level change to gathering the influence of signal, C32 is filter
Ripple electric capacity.
As shown in fig. 6, the WIFI wireless modules use the EMW3165WIFI of Mxchip Information Technology Co., Ltd.
Module, communicated by serial ports and main control chip.This WIFI module is integrated with a radio frequency chip and a Cortex-
M4 microcontrollers, built-in " self-hosted " WIFI network function library and application component, comprising 22 GPIO pins and
JTAG/SWD debugging interfaces.This WIFI module supports 802.11b/g/n standards, and receiving sensitivity is -87dBm, supports
Easylink.R1, R2, R5 are isolation resistance in figure, and R4 is indicator lamp pull-up resistor.433MHz wireless modules use Shenyang certainly
The there is provided IM433 wireless modules in Dong Hua research institutes Guangzhou point, work in 433MHz frequency ranges, pass through TTL serial ports and main control chip
Communication, the wireless transparent transmission function of data can be achieved.
As shown in fig. 7, the power management section circuit is mainly realized is converted into system electricity by industrial 24V dc sources
Source, also compatible 12V DC power supply power supply.Chip is depressured by the TPS5430 high-performance DC/DC of TI companies and carries out voltage turn
Change.5V is converted into 3.3V using AMS, B_S-1W is simulation numeral isolated from power chip.Resistance R60 and R61 ratio in figure
Output voltage, which can be achieved, is worth regulation.
RS485 interfaces are attached by the serial ports of ADM2486 chips and main control chip, and ADM2486 is used for rs 232 serial interface signal
With the conversion between RS485 signals.It is that output end is entered in RS485 output ends addition resistance R62, R65, R67 main function
Row impedance matching, suppression common mode signal interference, keep the integrality of differential signal.And by output end TVS diode to output
End carries out isolation voltage overvoltage protection processing, prevents electrostatic damage board-level circuit.
The present embodiment additionally provides a kind of method of feeding of the miniature constant current solvent feeding system in laboratory, including following steps
Suddenly：
S1, feed information is set by long-range or local operation, the feed information include height of liquid level position, temperature,
And flow velocity；If selection, by remotely located, feed information passes through Ethernet, WIFI routers or 433 wireless network transmissions
To the controller of syringe pump apparatus；If selection, by being locally located, feed information is transmitted to syringe pump by 4 groups of signal wires and filled
The controller put；
S2, controller, which receive, sets corresponding parameters to carry out multigroup syringe of syringe pump apparatus after injection information
The temperature information of setting is transferred to temperature sensor by injection, the controller, and temperature sensor is to the solution in filter
Monitored in real time, and by the heater button of Control filter, the filter is used to filter storing dress
The solution of offer is put, the liquid level information of setting is transferred to liquid level sensor by the controller, and liquid level sensor is to storage device
Solution level monitored in real time；
S3, temperature sensor, liquid level sensor are by monitoring result Real-time Feedback to controller, and distinct feed-back is to long-range meter
Calculation machine or local display, realize the remotely-or locally real-time monitoring to multigroup ejection of syringe pump.
As preferable technical scheme, in step S1, when selecting remotely located, operator sets feed to join on computers
Number, the parameter by Ethernet, WIFI routers or 433 wireless network transmissions to the Ethernet interface of controller, WIFI module,
Or 433MHz wireless modules；Controller receives feed ginseng by Ethernet interface WIFI modules or 433MHz wireless modules
Number, 485 communication interfaces of controller, which are transmitted feeding speed to multigroup syringe, controller by 2 groups of signal wires, passes through temperature
Sensor interface transmits temperature information to temperature sensor, temperature sensor monitors real time temperature, if temperature does not reach setting
Temperature, controller open heater by relay, and controller is transmitted liquid level information to liquid level by liquid level sensor interface
Sensor, liquid level sensor monitor height of liquid level in real time.
Above-described embodiment is the preferable embodiment of the utility model, but embodiment of the present utility model is not by above-mentioned
The limitation of embodiment, it is other it is any without departing from Spirit Essence of the present utility model with made under principle change, modify, replace
Generation, combination, simplify, should be equivalent substitute mode, be included within the scope of protection of the utility model.
Claims (8)
1. a kind of miniature constant current solution feed system in laboratory, it is characterised in that including storage device, high-precision for continuous and stable
The syringe pump apparatus and display screen of feed are spent, the syringe pump apparatus includes multigroup syringe and a controller, described multigroup
Syringe is connected with controller, and the display screen is connected with controller；Every group of syringe is provided with a triple valve, the storing dress
Put and triple valve corresponding to every group of syringe is connected by feeding pipeline；The controller be used to controlling the flow velocity of solution, temperature and
Liquid level, the controller include 485 communication interfaces, temperature sensor interface, liquid level sensor interface, Ethernet interface, relay
Device, display screen interface, WIFI module and 433MHz wireless modules, 485 communication interfaces of the controller and multigroup note
Emitter is connected, and the display screen interface is connected with display screen, and the Ethernet interface is connected with Ethernet；The WIFI module is led to
Cross and be wirelessly connected with WIFI wireless routers；Described 433MHz wireless modules are wireless by 433MHz wireless networks and 433MHz
Gateway connects.
2. the miniature constant current solution feed system in laboratory according to claim 1, it is characterised in that 485 communication connects
Mouth is connected by 2 groups of signal wires with multigroup syringe；The display screen interface is connected by 4 groups of signal wires with display screen；
The Ethernet interface is connected by 4 groups of signal wires with Ethernet.
3. the miniature constant current solution feed system in laboratory according to claim 1, it is characterised in that in the storage device
The liquid level sensor for provided with the liquid level to storage device monitor and alarm in real time, the liquid of the liquid level sensor and controller
Level sensor interface connects.
4. the miniature constant current solution feed system in laboratory according to claim 1, it is characterised in that also include being used for storage
The filter that the solution of material device conveying is filtered, described filter one end is connected by feeding pipeline and storage device
Connect, the other end is connected by feeding pipeline triple valve corresponding with syringe.
5. the miniature constant current solution feed system in laboratory according to claim 4, it is characterised in that in the filter
Portion is provided with filter, for filtering out the impurity in solution.
6. the miniature constant current solution feed system in laboratory according to claim 4, it is characterised in that the filter bottom
Portion is provided with heater, and the heater is connected by Control, the relay by 3 groups of signal wires with the controller；
The bottom of the filter is provided with the temperature sensor for detecting solution temperature, and the temperature sensor is passed by temperature
Sensor Interface and Controler connect.
7. the miniature constant current solution feed system in laboratory according to claim 1, it is characterised in that the controller is assigned
Switch order gives the triple valve of multigroup syringe, and the triple valve is two, for controlling the flow direction of solution, and ensures feed
Continuity；Two triple valve open and close in turn, if a triple valve is charging, another triple valve is discharging.
8. the miniature constant current solution feed system in laboratory according to claim 1, it is characterised in that the display screen is liquid
Brilliant touch display screen, achievable local control and the switching of remote control, the setting of height of liquid level position and alarm, temperature setting, show
Show and alarm, the heating of temperature linearity amendment and solvent is set.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721069417.9U CN207067751U (en) | 2017-08-25 | 2017-08-25 | A kind of miniature constant current solution feed system in laboratory |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721069417.9U CN207067751U (en) | 2017-08-25 | 2017-08-25 | A kind of miniature constant current solution feed system in laboratory |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107491007A (en) * | 2017-08-25 | 2017-12-19 | 广州中国科学院沈阳自动化研究所分所 | A kind of miniature constant current solution feed system in laboratory and control method |
-
2017
- 2017-08-25 CN CN201721069417.9U patent/CN207067751U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107491007A (en) * | 2017-08-25 | 2017-12-19 | 广州中国科学院沈阳自动化研究所分所 | A kind of miniature constant current solution feed system in laboratory and control method |
| CN107491007B (en) * | 2017-08-25 | 2023-09-19 | 广州中国科学院沈阳自动化研究所分所 | Miniature constant-current solution feeding system for laboratory and control method |
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