CN103306957A - Pneumatic booster pump embedded controller based on singlechip and control method - Google Patents
Pneumatic booster pump embedded controller based on singlechip and control method Download PDFInfo
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- CN103306957A CN103306957A CN2013102370704A CN201310237070A CN103306957A CN 103306957 A CN103306957 A CN 103306957A CN 2013102370704 A CN2013102370704 A CN 2013102370704A CN 201310237070 A CN201310237070 A CN 201310237070A CN 103306957 A CN103306957 A CN 103306957A
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Abstract
The invention relates to a pneumatic booster pump embedded controller based on a singlechip and a control method, and belongs to the technical field of automatic control. Four sensor interfaces and one electromagnetic valve interface are arranged on the left side surface of the outside of the controller; the sensor interfaces and the electromagnetic valve interface adopt aviation plugs; a 12864 liquid crystal display and a film matrix keyboard are arranged on the front side of the outside of the controller; a controller switch and a charge port are arranged on the right side surface of the outside of the controller; the four sensor interfaces are connected with four sensors of a device; an internal circuit of the controller comprises a single-chip minimum system circuit, a signal conditioning circuit, a power supply and voltage switching circuit, an electromagnetic valve control circuit, a buzzer circuit, a matrix keyboard circuit and a 12864 display circuit; and the circuits of all parts are connected with the singlechip.
Description
Technical field
The present invention relates to a kind of SCM Based Pneumatic booster pump embedded controller and controlling method, belong to the automatic control technology field.
Background technique
The high-pressure gas injection machine is a kind of use supercharging equipment widely in the pneumatic system, and its core component is the pneumatic high-voltage suction booster, and basic functional principle is 1 high-pressure gas injection machine system principle of compositionality block diagram with reference to the accompanying drawings.System uses low-pressure compressed air as carrying out gas, carry out gas multiple source can be arranged, as: air compressor, gas cylinder or other low-pressure compressed air sources of the gas, the gas gas path on-off is carried out in solenoid directional control valve control, carry out gas and promote the acting of suction booster piston downwards, the gas of air feed container enters target container after suction booster piston opposite side is pressurized, obtain higher gas pressure in the target container thereby make.This pressurization system also can be applied in pipe fitting, flexible pipe, and valve, pressurized container, the static state such as cylinder and explosion test, the brake system of car test, the telecommunication cable charger, the aero tyre hydraulic accumulator fills the aspects such as nitrogen.
Summary of the invention
The present invention is directed to above problem and propose and developed a kind of SCM Based Pneumatic booster pump embedded controller and controlling method.
The technological scheme that the present invention takes is as follows:
A kind of SCM Based Pneumatic booster pump embedded controller; The external left side of controller is provided with 4 sensor interfaces and 1 solenoid valve interface, sensor interface and solenoid valve interface adopt aviation plug, the controller external front face is 12864 liquid crystal display panel and film matrix keyboard, and controller external right side is controller switches and charging port; 4 sensors of 4 sensor interface connection devices; The internal circuit of controller comprises single-chip minimum system circuit, signal conditioning circuit, power supply voltage converting circuit, solenoid valve control circuit, buzzer circuit, matrix keyboard circuit and 12864 display circuits, and the each several part circuit all links to each other with single-chip microcomputer; Signal conditioning circuit sends the pressure versus flow signal of No. 4 sensor collections to single-chip microcomputer; single-chip microcomputer is processed the collection signal of No. 4 sensors according to intelligent algorithm; according to processing result; single-chip microcomputer outputs signal to solenoid valve control circuit; solenoid valve is controlled; buzzer circuit sends key prompting voice and alarm signal; display circuit shows processing result in real time by 12864 liquid crystal display panel; matrix keyboard circuit is used to controller to set the supercharging task parameters; power circuit provides power supply for single-chip microcomputer, and has overload protection; anti-connecing instead; the electric weight real time monitoring function.
Described No. 4 sensors are divided into No. 3 pressure transducers and No. 1 flow transducer, and wherein No. 3 pressure transducers are essential, and No. 1 flow transducer can be matched.The signal of No. 4 sensor collections is respectively: carry out gas pressure, carry out gas flow, air feed container gas pressure, target container gas pressure.
Described controller adopts chargeable lithium cell as power supply.
A kind of SCM Based Pneumatic booster pump embedded controller is realized the method for control: its basic functional principle is: the initial pressure value that at first gathers each road gas by matrix keyboard setting supercharging task and sensor, controller calculates automatically judges that can the supercharging target realize, if can realize that then prediction reaches the needed supercharging number of times of supercharging target (the work week issue of high-voltage booster), the controller opens solenoid valve, carry out gas and enter high-voltage booster, begin air feed container gas boosting, and in the course of the work, controller detects in real time and shows execution gas pressure and flow by display circuit, air feed container gas pressure and target container gas pressure, and calculating residue supercharging number of times, when the target container gas pressure reaches setting value, the control system shut electromagnetic valve, the supercharging task is finished.
The applied intelligent algorithm workflow of controller computational process is: at first by gathering each road sensor signal under precondition, obtain the force value of air feed container and target container, then utilize the intelligent algorithm formula to carry out interative computation one time, can judgement realize the supercharging target according to result of calculation, if can not realize, then provide information, the parameter setting is readjusted in requirement, if can realize then make the supercharging number of times add 1, and judge whether to reach the supercharging target according to the target container pressure after this time supercharging that calculates, if do not reach then return and carry out the next iteration computing, until the air feed container pressure that calculates stops computing during more than or equal to the target pressure value set, finally obtain total supercharging number of times, and show.
The formula of described intelligent algorithm foundation is:
The pressure of high-pressure plunger intracavity gas is PA before the n time compression beginning
nFormula:
After finishing, the n time compression discharge the pressure P B of pressurized gas
nFormula:
The total measurement (volume) in high-pressure plunger chamber comprises the formula of clearance volume and effective travel volume:
VC＝VO+A
2S,
In the above-mentioned formula:
VA be for air space and with the volume of supercharger outlet connecting pipeline;
VB be target container and with the volume of supercharger outlet connecting pipeline;
VO is the clearance volume in high-pressure plunger chamber;
VC is the total volume in high-pressure plunger chamber;
A
2It is the high-pressure plunger area;
S is compression stroke length.
Principle of the present invention and beneficial effect: in order to satisfy the requirement of pressurization system intelligent control, handling safety, according to gas drive high-pressure booster working principle and characteristics, proposed a kind of Control System Design scheme.This scheme can automatically detect air feed container and target container and carry out gas pressure, can prediction supercharging task realize, on this basis, the compression number of times of setting the supercharging required by task is finished in intelligence computation, and the automatically start and stop by the electromagnetic valve pressurized machine, thereby improve the service behaviour of high-pressure gas injection machine.Controller adopts the chargeable lithium cell power supply, and boundary dimension is little, and compact structure is low in energy consumption, and the field work applicability is strong.To existing this type of supercharging equipment, only need controller of the present invention and related sensor are installed, just can realize above-described control target.
Description of drawings
The principle of compositionality figure of Fig. 1 high-pressure gas injection system.
Fig. 2 control system consists of block diagram.
Fig. 3 (a) single-chip minimum system circuit of the present invention.
Fig. 3 (b) is buzzer circuit of the present invention.
Fig. 3 (c) is the present invention's 12864 display circuits.
Fig. 3 (d) is matrix keyboard circuit of the present invention.
Fig. 3 (e) is power supply voltage converting circuit of the present invention.
Fig. 3 (f) is solenoid valve control circuit of the present invention.
Fig. 3 (g) is signal conditioning circuit of the present invention.
Fig. 4 intelligence computation subroutine flow chart.
Fig. 5 system control module program flow diagram.
Fig. 6 controller surface structure schematic diagram.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 6: the external left side of controller is provided with 4 sensor interfaces and 1 solenoid valve interface, sensor interface and solenoid valve interface adopt aviation plug, the controller external front face is 12864 liquid crystal display panel and matrix keyboard, and controller external right side is controller switches and charging port; 4 sensors of 4 sensor interface connection devices.
Shown in Fig. 2 and Fig. 3 (a)-(g): the inside of controller comprises single-chip minimum system circuit, signal conditioning circuit, power circuit, solenoid valve control circuit, buzzer circuit, matrix keyboard circuit and display circuit, the each several part circuit all links to each other with single-chip microcomputer.Signal conditioning circuit sends the pressure versus flow signal of No. 4 sensor collections to single-chip microcomputer; Single-chip microcomputer is processed the collection signal of No. 4 sensors according to intelligent algorithm, and according to processing result, single-chip microcomputer outputs signal to solenoid valve control circuit solenoid valve is controlled; Buzzer circuit sends key prompting voice and alarm signal; Display circuit shows processing result in real time by 12864 liquid crystal display panel; Matrix keyboard circuit is used to controller to set the supercharging task parameters; Power circuit provides power supply for single-chip microcomputer, and has overload protection, anti-connects anti-, electric weight real time monitoring function.Described controller adopts the 13.6V-2200mAh chargeable lithium cell as power supply.Shown in Fig. 3 (d): it is the film matrix keyboard of 4x4 that matrix keyboard circuit adopts model.Shown in Fig. 3 (b): it is the piezo buzzer of PKM13EPYH4002-BO that buzzer circuit adopts model.
As depicted in figs. 1 and 2: described No. 4 sensors are divided into No. 3 pressure transducers and No. 1 flow transducer, and wherein No. 3 pressure transducers are essential, and No. 1 flow transducer can be matched.The signal of No. 4 sensor collections is respectively: carry out gas pressure, carry out gas flow, air feed container gas pressure, target container gas pressure.
As shown in Figure 4: a kind of SCM Based Pneumatic booster pump embedded controller is realized the method for control: judge that according to the initial pressure of setup parameter and each container can the supercharging target realize, and prediction reaches the supercharging number of times that the supercharging target needs.At first by gathering each road sensor signal under precondition, obtain the force value of air feed container and target container, then utilize the intelligent algorithm formula to carry out interative computation one time, can judgement realize the supercharging target according to result of calculation, if can not realize, then provide information, the parameter setting is readjusted in requirement, if can realize then make the supercharging number of times add 1, and judge whether to reach the supercharging target according to the target container pressure after this time supercharging that calculates, if do not reach then return and carry out the next iteration computing, until the air feed container pressure that calculates stops computing during more than or equal to the target pressure value set, finally obtain total supercharging number of times, and show.
The formula of described intelligent algorithm foundation is:
The pressure of high-pressure plunger intracavity gas is PA before the n time compression beginning
nFormula:
After finishing, the n time compression discharge the pressure P B of pressurized gas
nFormula:
The total measurement (volume) in high-pressure plunger chamber comprises the formula of clearance volume and effective travel volume:
VC＝VO+A
2S,
In the above-mentioned formula:
VA be for air space and with the volume of supercharger outlet connecting pipeline;
VB be target container and with the volume of supercharger outlet connecting pipeline;
VO is the clearance volume in high-pressure plunger chamber;
VC is the total volume in high-pressure plunger chamber;
A
2It is the high-pressure plunger area;
S is compression stroke length.
As shown in Figure 5: be the operating process of control system, after the controller power-on-reset, at first begin the executive system self check, if all are normal for equipment, the welcome interface of 12864 liquid crystal screen display control programs, otherwise display system fault message.After the system that enters welcomes the interface, carry out the button monitoring, after pressing any key, jump to function and select the interface, the corresponding parameters option of button " 0 " this moment can arrange air feed container capacity, target container capacity, carry out gas pressure, supercharging goal pressure etc.; The corresponding calculation times option of button " 1 " calls the intelligence computation subroutine; Button " 2 " correspondence begins to inflate option, start pressurization, by calling the A/D conversion routine, make interface display carry out the instantaneous value of gas pressure, execution gas flow, air feed container pressure, target container pressure, and at set intervals will prompting residue supercharging number of times, the easy-to-operat person observes and controls each parameter of pressurization, after reaching the supercharging target, and Self-shut electromagnetic valve; Button " 3 " correspondence stops to inflate option, and can pass through " determining " button shut electromagnetic valve this moment, stops supercharging work.Shown in Fig. 3 (c): it is the liquid crystal display panel of QC12864B that 12864 display circuits adopt model.
Shown in Fig. 3 (a): controller microprocessor is AVRmega16L technical grade single-chip microcomputer.System clock is comprised of two-part: real time clock circuit and system clock circuit, real time clock circuit uses the 32.768kHz watch crystal as the clock source of device, when making single-chip microcomputer be in sleep state in order to reduce system power dissipation, other function modules of single-chip microcomputer all quit work, only have nonsynchronous timer externally to be in the counting working state under the real time clock circuit driving, counting overflows and triggers the automatic waken system of interruption meeting; System clock circuit uses the 4MHz crystal oscillator as clock source.No. 4 sensors of native system adopt the 12V power supply, gas pressure and gas flow are converted to the analog output of 1～5V, the gas drive high-voltage booster adopts the pulsation working method, the analog amount of sensor output also is pulsatile change in this case, shown in Fig. 3 (g): the detecting circuit that is made of diode and resistance capacitance in the signal conditioning circuit guarantees that system acquisition is to relatively stable reliable signal, also effectively reduce the complexity of Digital Signal Processing, improved the real-time of system.Shown in Fig. 3 (f): solenoid valve control circuit is carried out the gas gas path on-off in order to control the high-pressure gas injection system, adopt Darlington circuit to drive relay, the break-make of the solenoid valve by Control 12V power supply, for improving system reliability, add the photoelectricity isolation, simultaneously near relay, increase fly-wheel diode, avoid starting at device, the instant of chopping circuit produces than heavy current impact.
Shown in Fig. 3 (e): power supply voltage converting circuit has overload protection; prevent overcharging or overdischarge of battery; Braking mode stops charging when cell voltage is higher than 14.2 volts in charging process, and in the circuit working process, braking stops discharge when cell voltage is lower than 12 volts.Prevent connecing counter measure: connect on the contrary damage equipment in order to prevent the power supply accident; 13.6 volts of input ends of power supply are connected in the control system circuit by a commutation diode; in case power positive cathode connects instead; unilateral conduction because of diode; can generation current in the power circuit, thus protective circuit and power supply.Electric weight implementing monitoring: owing to adopting powered battery, when the power supply dump energy is not enough, although circuit still can be worked, but the accuracy of measuring and controlling is difficult to guarantee, therefore 13.6 volts of power supplys are adjusted to suitable scope by potentiometer DYGL with voltage and are sent into microcontroller and carry out analog-to-digital conversion, detect electric quantity of power supply, output alarm signal when electric weight is not enough.
In this controller, man-machine interface control (parameter setting and data show) adopts 4*4 film matrix keyboard and 12864 liquid crystal screens to realize.
The above; only be the better embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technological scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (5)
1. SCM Based Pneumatic booster pump embedded controller, it is characterized in that: the external left side of controller is provided with 4 sensor interfaces and 1 solenoid valve interface, sensor interface and solenoid valve interface adopt aviation plug, the controller external front face is 12864 liquid crystal display panel and film matrix keyboard, and controller external right side is controller switches and charging port; 4 sensors of 4 sensor interface connection devices; The internal circuit of controller comprises single-chip minimum system circuit, signal conditioning circuit, power supply voltage converting circuit, solenoid valve control circuit, buzzer circuit, matrix keyboard circuit and 12864 display circuits, and the each several part circuit all links to each other with single-chip microcomputer; Signal conditioning circuit sends the pressure versus flow signal of No. 4 sensor collections to single-chip microcomputer; single-chip microcomputer is processed the collection signal of No. 4 sensors according to intelligent algorithm; according to processing result; single-chip microcomputer outputs signal to solenoid valve control circuit; solenoid valve is controlled; buzzer circuit sends button and alarm sound; display circuit shows processing result in real time by 12864 liquid crystal display panel; matrix keyboard circuit is used to controller to set the supercharging task parameters; power supply voltage converting circuit provides power supply for single-chip microcomputer, and has overload protection; anti-connecing instead; the electric weight real time monitoring function.
2. a kind of SCM Based Pneumatic booster pump embedded controller according to claim 1, it is characterized in that: No. 4 sensors are divided into No. 3 pressure transducers and No. 1 flow transducer, wherein No. 3 pressure transducers are essential, No. 1 flow transducer can be matched, and the signal of No. 4 sensor collections is respectively: carry out gas pressure, carry out gas flow, air feed container gas pressure, target container gas pressure.
3. a kind of SCM Based Pneumatic booster pump embedded controller according to claim 1 is characterized in that: controller adopts chargeable lithium cell as power supply.
4. a kind of SCM Based Pneumatic booster pump embedded controller according to claim 1 is realized the method for control, it is characterized in that: at first gather the initial pressure value of each road gas by matrix keyboard setting supercharging task and sensor, controller calculates automatically judges that can the supercharging target realize; If can realize that then prediction reaches the needed supercharging number of times of supercharging target (the work week issue of high-voltage booster), the controller opens solenoid valve, carry out gas and enter high-voltage booster, begin air feed container gas boosting, and in the course of the work, controller detects in real time and shows execution gas pressure and flow, air feed container gas pressure and target container gas pressure by liquid crystal screen, and calculating residue supercharging number of times, when the target container gas pressure reaches setting value, the control system shut electromagnetic valve, the supercharging task is finished.
5. a kind of SCM Based Pneumatic booster pump embedded controller according to claim 1 is realized the method for control, it is characterized in that: the intelligent algorithm workflow: at first by gathering each road sensor signal under precondition, obtain the force value of air feed container and target container, then utilize the intelligent algorithm formula to carry out interative computation one time, can judgement realize the supercharging target according to result of calculation, if can not realize, then provide information, the parameter setting is readjusted in requirement, if can realize then make the supercharging number of times add 1, and judge whether to reach the supercharging target according to the target container pressure after this time supercharging that calculates, if do not reach then return and carry out the next iteration computing, until the air feed container pressure that calculates stops computing during more than or equal to the target pressure value set, finally obtain total supercharging number of times, and show.
The formula of intelligent algorithm institute foundation is:
The pressure of high-pressure plunger intracavity gas is PA before the n time compression beginning
nFormula:
After finishing, the n time compression discharge the pressure P B of pressurized gas
nFormula:
The total measurement (volume) in high-pressure plunger chamber comprises the formula of clearance volume and effective travel volume:
VC＝VO+A
2S,
In the above-mentioned formula:
VA---for air space and with the volume of supercharger outlet connecting pipeline;
VB---target container and with the volume of supercharger outlet connecting pipeline;
VO---the clearance volume in high-pressure plunger chamber;
VC---the total volume in high-pressure plunger chamber;
A
2---the high-pressure plunger area;
S---compression stroke length.
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| CN2013102370704A CN103306957A (en) | 2013-06-13 | 2013-06-13 | Pneumatic booster pump embedded controller based on singlechip and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104027241A (en) * | 2014-06-25 | 2014-09-10 | 安阳市翔宇医疗设备有限责任公司 | Moxibustion therapeutic instrument |
| CN105587650A (en) * | 2015-12-22 | 2016-05-18 | 佛山市威灵洗涤电机制造有限公司 | Output voltage control method and device for booster pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0156399A2 (en) * | 1984-03-30 | 1985-10-02 | Kabushiki Kaisha Komatsu Seisakusho | Fluid operated pump displacement control system |
| CN202017611U (en) * | 2011-04-25 | 2011-10-26 | 郑寿华 | Bidirectional intelligent booster pump |
| CN202817864U (en) * | 2012-09-07 | 2013-03-20 | 中船重工鹏力（南京）新能源科技有限公司 | Intelligent ship DC charger |
-
2013
- 2013-06-13 CN CN2013102370704A patent/CN103306957A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0156399A2 (en) * | 1984-03-30 | 1985-10-02 | Kabushiki Kaisha Komatsu Seisakusho | Fluid operated pump displacement control system |
| CN202017611U (en) * | 2011-04-25 | 2011-10-26 | 郑寿华 | Bidirectional intelligent booster pump |
| CN202817864U (en) * | 2012-09-07 | 2013-03-20 | 中船重工鹏力（南京）新能源科技有限公司 | Intelligent ship DC charger |
Non-Patent Citations (1)
| Title |
|---|
| 徐哲: ""基于单片机的高压注气机控制***的研究"", 《大连海事大学硕士学位论文》, 30 September 2009 (2009-09-30) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104027241A (en) * | 2014-06-25 | 2014-09-10 | 安阳市翔宇医疗设备有限责任公司 | Moxibustion therapeutic instrument |
| CN104027241B (en) * | 2014-06-25 | 2016-01-13 | 安阳市翔宇医疗设备有限责任公司 | Moxibustion therapeutic equipment |
| CN105587650A (en) * | 2015-12-22 | 2016-05-18 | 佛山市威灵洗涤电机制造有限公司 | Output voltage control method and device for booster pump |
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Application publication date: 20130918 |