CN208805690U - A kind of PID control experiment porch - Google Patents

Abstract

The utility model discloses a kind of PID control experiment porch, including PC machine, RS232 cable, PLC, frequency converter, pump, water tank, water inlet pipe, outlet pipe, water supply valve door, liquid level sensor, upper water box and water discharging valve.The beneficial effects of the utility model are: being provided with the craft port for connecting external AC power source on the shell of pump, and in water inlet pipe, outlet pipe connection port at be provided on raised type connector and the connectivity port be provided with screw thread and two sides rotation two rotary buckles are set, it prevents from connecting with pipeline and the replacement process in later period excessively cumbersome, waste a large amount of time, concave, which is provided with, on water supply valve door and water discharging valve connects bull stick, and the Packed rubber washer of setting at the connectivity port of water supply valve door and water discharging valve and external pipe, it prevents from quickly controlling valve, to cause the failure of test.

Description

A kind of PID control experiment porch

Technical field

The utility model relates to a kind of control experiment porch, specially a kind of PID control experiment porch belongs to control experiment Platform technology field.

Background technique

Since the thirties in last century, automatic technology obtains astonishing achievements, now in industrial production and science hair Key effect is played in exhibition, currently, automation equipment has become large scale equipment inalienable part, it may be said that if not It is equipped with automation equipment appropriate, large-scale production process can not carry out at all, in fact, automatization level height has become weighing apparatus An important symbol of industrial enterprise's modernization is measured, PID is used to state modulators such as liquid levels in traditional process control Control, it may be said that obtain good effect, in process of production, PID control has become that with the longest history, vitality is most strong Basic mode, hereafter, with the development of computer and PLC, computer and PLC are perfectly combined with Fuzzy PID Control Technique, Pid parameter can be generated by computer control PLC, control controlled device and feedback data is handled to computer, mould Paste control is the technology rapidly developed in recent ten years, and neural network and Multimode Control and referred to as intelligent control, but by It is simple and practical in its, it has been successfully applied in various control systems at present, fuzzy control is become with fuzzy set theory, fuzzy language A kind of computer mathematics control method based on amount and fuzzy logic inference, belongs to nonlinear control method, special due to introducing The logical thinking mode of family so that fuzzy controller has certain auto-adaptive controling ability, thus especially suitable for being difficult to use The system of mathematical models description, and have very strong robustness and stability, the design is directed to the common big inertia of single order Link temperature control object is designed a kind of control system that PID control is combined with fuzzy control (FLC), can be obtained good Control effect.

Therefore, then a kind of PID control experiment porch is needed, although having had a variety of PID control experiment porch at present, As a whole, many common faults, core that one, its inside the PLC of existing PID control experiment porch are arranged but are remained The precision of the fuzzy algorithmic approach of piece is unable to reach corresponding requirement, and lead to the PID control experiment porch is unable to reach it accordingly Control effect, secondly, pump used in existing PID control experiment porch there is no setting raised type connectivity port, lead to it Connect with pipeline with the replacement process in later period excessively cumbersome, waste a large amount of time, thirdly, valve needs by specific Tool is operated, and leads to not quickly to control valve, to cause the failure of test.

Utility model content

The purpose of this utility model is that solve the above-mentioned problems and provides a kind of PID control experiment porch.

The utility model achieves the above object through the following technical schemes: a kind of PID control experiment porch, including PC Machine, RS232 cable, PLC, frequency converter, pump, water tank, water inlet pipe, outlet pipe, water supply valve door, liquid level sensor, upper water box And water discharging valve；The PC machine is located at the leftmost side of the PID control experiment porch and is connected on PLC by RS232 cable, The RS232 cable is respectively welded in PC machine and PLC by welding, and the PLC is by RS232 cable and becomes Frequency device and liquid level sensor are electrically connected in parallel, and the frequency converter is connected in series between PLC and pump by RS232 cable And electrically connect, one end of the pump is electrically connected by RS232 cable and frequency converter, and the other end of the pump passes through water Pipe is connect with water inlet pipe, outlet pipe respectively, and the lower section of pump is arranged in the water tank, and the water inlet pipe is by screwing clamping setting At the lower section port of pump, the outlet pipe is arranged at the top port of pump by screwing clamping, and the water supply valve door passes through The mode of welding is weldingly fixed on the top of upper water box, and the liquid level sensor is by fastening screw screw-tightened in upper water box On the side wall of the right, the water discharging valve is screwed fastening by screw hole and is arranged on the lower section panel of upper water box.

Preferably, in order to guarantee that information is enough fast by the spread speed of conducting wire and prevent because electric leakage cause it is dangerous Occur, the Internal cable of the RS232 cable be by a kind of cable material that pure copper material wire drawing is made, and should The surface of RS232 cable is wrapped in the rubber material of one layer of insulation.

Preferably, the PID control experiment porch is unable to reach its corresponding control effect in order to prevent, in the PLC Portion is provided with the chip that one piece is able to carry out fuzzy operation and the chip has multiple information processing endpoints.

Preferably, in order to prevent connect with pipeline with the replacement process in later period excessively cumbersome, waste a large amount of time, The craft port for connecting external AC power source is provided on the shell of the pump, and at the port that water inlet pipe, outlet pipe connect Be provided on raised type connector and the connectivity port be provided with screw thread and two sides rotation two rotary buckles are set.

Preferably, quickly valve can not be controlled in order to prevent, to cause the failure of test, the water supply valve Door be provided with concave on water discharging valve and connect bull stick, and the connectivity port of water supply valve door and water discharging valve and external pipe Packed rubber washer is arranged in place.

Preferably, in order to water level realization be accurately controlled, one piece of infrared sensing device built in the liquid level sensor and Perforative infrared acquisition hole is provided on its shell.

The beneficial effects of the utility model are: the PID control Experiment Platform Design is reasonable, the inner wire of RS232 cable Cable is by a kind of cable material that pure copper material wire drawing is made, and the surface of the RS232 cable is wrapped in one layer of insulation Rubber material, guarantee that information is enough fast by the spread speed of conducting wire and prevents because electric leakage leads to dangerous generation, PLC It is internally provided with the chip that one piece is able to carry out fuzzy operation and the chip has multiple information processing endpoints, prevent the PID Control experiment porch is unable to reach its corresponding control effect, and the docking for connecting external AC power source is provided on the shell of pump Port, and be provided on raised type connector and the connectivity port at the port that water inlet pipe, outlet pipe connect and be provided with screw thread And two rotary buckles are arranged in two sides rotation, prevent from connecting cumbersome, the waste with the replacement process in later period excessively with pipeline Be provided with concave on a large amount of time, water supply valve door and water discharging valve and connect bull stick, and water supply valve door and water discharging valve with Packed rubber washer is set at the connectivity port of external pipe, prevents from quickly controlling valve, to make At the failure of test, perforative infrared acquisition hole is provided on one piece of infrared sensing device built in liquid level sensor and its shell Hole is accurately controlled water level realization.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model thin portion schematic diagram.

In figure: 1, PC machine, 2, RS232 cable, 3, PLC, 4, frequency converter, 5, pump, 6, water tank, 7, water inlet pipe, 8, go out Water pipe, 9, water supply valve door, 10, liquid level sensor, 11, upper water box and 12, water discharging valve.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Please refer to Fig. 1~2, a kind of PID control experiment porch, including PC machine 1, RS232 cable 2, PLC3, frequency converter 4, Pump 5, water tank 6, water inlet pipe 7, outlet pipe 8, water supply valve door 9, liquid level sensor 10, upper water box 11 and water discharging valve 12；It is described PC machine 1 is located at the leftmost side of the PID control experiment porch and is connected on PLC3 by RS232 cable 2, the RS232 electricity Cable 2 is respectively welded at by welding on PC machine 1 and PLC3, and the PLC3 passes through RS232 cable 2 and frequency converter 4 Electrically be connected in parallel with liquid level sensor 10, the frequency converter 4 by RS232 cable 2 be connected in series in PLC3 and pump 5 it Between and electrically connect, one end of the pump 5 is electrically connected by RS232 cable 2 and frequency converter 4, the other end of the pump 5 It is connect respectively with water inlet pipe 7, outlet pipe 8 by water pipe, the lower section of pump 5 is arranged in the water tank 6, and the water inlet pipe 7 passes through It screws clamping to be arranged at the lower section port of pump 5, the outlet pipe 8 passes through at the top port for screwing and being clamped and pump 5 being arranged in, institute The top that water supply valve door 9 is weldingly fixed on upper water box 11 by welding is stated, the liquid level sensor 10 passes through fastening spiral shell On the right side wall of upper water box 11, the water discharging valve 12 is screwed fastening by screw hole and is arranged in Shang Shui silk screw-tightened On the lower section panel of case 11.

The Internal cable of the RS232 cable 2 be by a kind of cable material that pure copper material wire drawing is made, and should The surface of RS232 cable 2 is wrapped in the rubber material of one layer of insulation, guarantees that information is enough fast by the spread speed of conducting wire And prevent because electric leakage leads to dangerous generation, the PLC3 is internally provided with one piece of chip for being able to carry out fuzzy operation And the chip has multiple information processing endpoints, prevent the PID control experiment porch is unable to reach its corresponding control effect, The craft port for connecting external AC power source is provided on the shell of the pump 5, and in the port that water inlet pipe 7, outlet pipe 8 connect Place be provided on raised type connector and the connectivity port be provided with screw thread and two sides rotation two rotary buckles are set, prevent Connect with pipeline with the replacement process in later period excessively cumbersome, waste a large amount of time, the water supply valve door 9 and water discharging valve It is provided with concave connection bull stick on 12, and is arranged at the connectivity port of water supply valve door 9 and water discharging valve 12 and external pipe Packed rubber washer prevents from quickly controlling valve, to cause the failure of test, the level sensing It is provided with perforative infrared acquisition hole on one piece of infrared sensing device built in device 10 and its shell, accurate control is realized to water level System.

Working principle: when using the PID control experiment porch, first the power connection points and extraneous pressure stabilizing that pump 5 are handed over Galvanic electricity source is attached, and guarantees the steady operation of pump, then connects the raised type that water inlet pipe 7, outlet pipe 8 are connected to pump 5 It connects on port, guarantees the circulation of water, then liquid level sensor 10 is connected and is welded on PLC3 by RS232 cable 2 In the right panel of upper water box 11, to realize that the fine cut to water level controls.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (6)

1. a kind of PID control experiment porch, it is characterised in that: including PC machine (1), RS232 cable (2), PLC (3), frequency converter (4), (5), water tank (6), water inlet pipe (7), outlet pipe (8), water supply valve door (9), liquid level sensor (10), upper water box (11) are pumped With water discharging valve (12)；The PC machine (1) is located at the leftmost side of the PID control experiment porch and is gone here and there by RS232 cable (2) It is associated on PLC (3), the RS232 cable (2) is respectively welded at by welding in PC machine (1) and PLC (3), described PLC (3) is electrically connected in parallel by RS232 cable (2) with frequency converter (4) and liquid level sensor (10), the frequency converter (4) it is connected in series between PLC (3) and pump (5) by RS232 cable (2) and is electrically connected, one end of the pump (5) Be electrically connected by RS232 cable (2) and frequency converter (4), the other end of the pump (5) by water pipe respectively with water inlet pipe (7), outlet pipe (8) connects, and the water tank (6) is arranged in the lower section of pump (5), and the water inlet pipe (7) is set by screwing clamping Set at the lower section port of pump (5), the outlet pipe (8) by screws clamping be arranged at the top port of pump (5), it is described on Penstock (9) is weldingly fixed on the top of upper water box (11) by welding, and the liquid level sensor (10) passes through fastening Screws spiral is fastened on the right side wall of upper water box (11), and the water discharging valve (12) is screwed fastening setting by screw hole On the lower section panel of upper water box (11).

2. a kind of PID control experiment porch according to claim 1, it is characterised in that: the RS232 cable (2) Internal cable is by a kind of cable material that pure copper material wire drawing is made, and the surface of the RS232 cable (2) is wrapped in The rubber material of one layer of insulation.

3. a kind of PID control experiment porch according to claim 1, it is characterised in that: the PLC (3) is internally provided with One piece of chip for being able to carry out fuzzy operation and the chip have multiple information processing endpoints.

4. a kind of PID control experiment porch according to claim 1, it is characterised in that: be arranged on the shell of the pump (5) There is the craft port for connecting external AC power source, and is provided with raised type at the port that water inlet pipe (7), outlet pipe (8) connect It is provided with screw thread on connector and the connectivity port and two rotary buckles are arranged in two sides rotation.

5. a kind of PID control experiment porch according to claim 1, it is characterised in that: the water supply valve door (9) and draining Concave connection bull stick, and the connectivity port of water supply valve door (9) and water discharging valve and external pipe are provided on valve (12) Packed rubber washer is arranged in place.

6. a kind of PID control experiment porch according to claim 1, it is characterised in that: in the liquid level sensor (10) It sets and is provided with perforative infrared acquisition hole on one piece of infrared sensing device and its shell.