CN217211242U

CN217211242U - Intelligent pressure gauge of constant-current constant-voltage connection pump control system

Info

Publication number: CN217211242U
Application number: CN202123412476.0U
Authority: CN
Inventors: 曹国利
Original assignee: Hanon Tianjin Industrial Pump Co ltd
Current assignee: Hanergy Tianjin Emergency Equipment Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-08-16
Anticipated expiration: 2031-12-30

Abstract

The utility model provides an intelligent pressure gauge of a constant-current constant-voltage connection pump control system, which relates to the technical field of connection pumps and comprises a stainless steel shell, a pressure sensor, a support column, a pressure gauge control module arranged on the shell, a pressure signal conditioning module, a PWM output module, an analog output module and the like, wherein the pressure signal conditioning module, the PWM output module and the analog output module are respectively connected with the control module; the key module comprises a mechanical waterproof power switch and an adjusting key, the support column is fixed below the shell, a pressure leading interface is arranged at the bottom end of the support column, and a measuring range adjusting button connected with the pressure gauge control module is arranged on the support column; the lead for connecting the pressure sensor and the pressure signal conditioning module is arranged on the supporting column in a penetrating way; the PWM output module is connected with the mechanical speed regulation engine, or the analog quantity output module is connected with the electronic speed regulation engine/electronic injection electrically regulated engine. The utility model discloses can satisfy waterproof anticreep requirement, but also can the engine of the multiple model of auxiliary control, simple structure, convenient operation.

Description

Intelligent pressure gauge of constant-current constant-voltage connection pump control system

Technical Field

The utility model relates to a technical field of pump that continues, in particular to constant current constant voltage pump control system's intelligent manometer continues.

Background

At present, a plurality of continuous pumps can be connected in series for use, so that the lift is infinitely increased, and the requirement for a novel drainage pump for remote drainage of subways, tunnels, underground garages and the like is met. The continuous pumps are connected in series through hoses, the rotating speed of the continuous pumps is controlled and adjusted through the control system according to the outlet pressure of the continuous pumps, and the intelligent and convenient continuous pump is achieved. However, in application, the types of the following pumps are various, and some of the following pump engines are mechanical and some of the following pump engines are electronic, and thus uniform control cannot be achieved. At present, some pressure gauges can detect the pressure of a water inlet (or a water outlet) of the pressure gauge and display the pressure. However, the wading depth of the continuous pump can reach 80cm, and a pressure gauge applied to the continuous pump needs to detect and display water pressure and meet the requirements of water resistance and electric leakage resistance.

SUMMERY OF THE UTILITY MODEL

The utility model provides a constant current constant voltage pump control system's intelligent manometer that continues can satisfy waterproof anticreep requirement, but also can the engine of the multiple model of auxiliary control, simple structure, convenient operation.

The utility model provides an intelligent pressure gauge of a constant-current constant-voltage continuous pump control system, which comprises a shell, a support column, a pressure gauge control module, a pressure sensor, a pressure signal conditioning module, a PWM output module, an analog quantity output module with the output voltage of 0V-5V, a speed-regulating potentiometer, a LED display module, a key module and a power module, wherein the pressure gauge control module, the pressure sensor, the pressure signal conditioning module, the PWM output module, the analog quantity output module, the speed-regulating potentiometer, the LED display module, the key module and the power module are arranged on the shell;

the key module comprises a mechanical waterproof power switch arranged on the back surface of the shell and an adjusting key arranged on the front surface of the shell, the support column is fixed below the shell, a pressure leading interface is arranged at the bottom end of the support column, and a measuring range adjusting button connected with the pressure gauge control module is arranged on the support column; the lead for connecting the pressure sensor and the pressure signal conditioning module is arranged on the supporting column in a penetrating way;

the pressure signal conditioning module, the PWM output module, the analog output module, the speed-regulating potentiometer, the LED display module, the key module and the power module are respectively connected with the pressure gauge control module; the PWM output module or the analog output module is connected with an engine.

The stainless steel shell and the mechanical waterproof power switch have the advantages of water resistance and electric leakage resistance, and ensure that the continuous pump can normally work in water or in the environment of rainy and snowy weather; the mechanical waterproof power switch is also convenient for closing the pressure gauge at any time; the stainless steel shell also has an antirust function and long service life; the LED display module is arranged for displaying various state information; the utility model is also provided with a PWM output module which can be connected with the mechanical speed-regulating engine to realize the speed regulation of the mechanical speed-regulating engine; the submersible pump transmitter is also provided with an analog quantity output module with the output voltage of 0V-5V, and can be started and connected with a control electronic type, so that the submersible pump transmitter can be used in multiple models.

In an optional implementation mode, the pressure gauge further comprises a remote controller module and a 485 communication module which are respectively connected with the pressure gauge control module.

The remote controller module is arranged, so that the pump can be remotely controlled and connected conveniently through the remote controller. And a 484 communication module is further arranged, so that the control cabinet can be conveniently connected with a plurality of continuous pumps, and a hardware basis is provided for realizing the unified control of the plurality of continuous pumps.

In an optional implementation mode, the system further comprises a plurality of standby switching value output modules with output voltages of 0V-12V, and the switching value output modules are respectively connected with the pressure gauge control module.

A plurality of reserved switching value output modules are arranged to provide power for other extended function modules, such as an exhaust solenoid valve module, a status indicator lamp module and the like.

In an alternative embodiment, the motor is a mechanical speed-regulating motor, and the PWM output module includes a first connector, a forty-second resistor, a forty-sixth resistor, and a third transistor;

a first end of the forty-sixth resistor is connected with the pressure gauge control module, and a second end of the forty-sixth resistor is connected with a base electrode of the third triode; the first end of the forty-second resistor is connected with the power supply module, the second end of the forty-second resistor and the collector electrode of the third triode are respectively connected with the second pin of the first connector, the first pin of the first connector is connected with the power supply module, the third pin of the first connector and the emitter electrode of the third triode are respectively grounded, and the first connector is connected with the model airplane steering engine of the mechanical speed regulation engine.

In an optional embodiment, the engine is an electronic speed regulation engine or an electronic injection electric regulation engine, and the analog quantity output module includes a second connector, a first operational amplifier, a second operational amplifier, a fifty-ninth resistor, a sixty-first resistor, a sixty-second resistor, a sixty-third resistor, a sixty-fourth resistor, a sixty-fifth resistor, a sixty-sixth resistor, a forty-second capacitor, a forty-third capacitor, and a forty-fourth capacitor;

the first end of the sixty-first resistor is connected with the pressure gauge control module, the second end of the sixty-first resistor is respectively connected with the first end of a sixty-fourth resistor and the first end of the sixty-second resistor, and the second end of the sixty-fourth resistor is grounded;

the second end of the sixty-second resistor is respectively connected with the first end of the forty-third capacitor and the first end of the sixty-third resistor, the second end of the sixty-third resistor is also respectively connected with the first end of the forty-fourth capacitor and the first end of the fifty-ninth resistor, and the second end of the forty-third capacitor and the second end of the forty-fourth capacitor are respectively grounded;

the second end of the fifty-ninth resistor is connected with the anode of the first operational amplifier, the cathode of the first operational amplifier is connected with the output end of the first operational amplifier, the anode end of the power supply of the first operational amplifier is grounded, and the cathode end of the power supply of the first operational amplifier and the first end of the forty-second capacitor are connected with the power module together; a second terminal of the forty-second capacitor is grounded;

a first end of the sixty resistor is connected with an output end of the first operational amplifier, a second end of the sixty resistor is connected with an anode of the second operational amplifier, and two ends of the sixty-five resistor are respectively connected with a cathode of the second operational amplifier and an output end of the second operational amplifier;

one end of the sixty-sixth resistor is connected with the negative electrode of the second operational amplifier, the second end of the sixty-sixth resistor is grounded, the output end of the second operational amplifier is connected with the first pin of the second connector, and the second pin of the second connector is grounded;

the second connector is connected with a control module of the electronic speed regulation engine or the electronic electric injection regulation engine.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is another schematic structural diagram of the present invention;

FIG. 3 is a schematic diagram of a pressure gauge system of the present invention;

fig. 4 is a schematic circuit diagram of a pressure gauge control module of the present invention;

fig. 5 is a schematic diagram of a peripheral circuit of a ninth pin of the pressure gauge control module of the present invention;

fig. 6 is a schematic circuit diagram of the PWM output module according to the present invention;

fig. 7 is a schematic circuit diagram of the analog output module of the present invention;

fig. 8 is a schematic circuit diagram of an LED display interface according to the present invention;

fig. 9 is a schematic circuit diagram of a reference module in the pressure signal conditioning module of the present invention;

fig. 10 is a schematic circuit diagram of an amplifying module in the pressure signal conditioning module according to the present invention;

fig. 11 is a schematic circuit diagram of a third connector in the pressure signal conditioning module of the present invention;

fig. 12 is a schematic circuit diagram of the speed-regulating potentiometer of the present invention;

fig. 13 is a schematic circuit diagram of a power interface in the power module of the present invention;

fig. 14 is a schematic circuit diagram of a voltage monitoring module in the power module of the present invention;

fig. 15 is a schematic circuit diagram of a first voltage stabilizing module in the power module of the present invention;

fig. 16 is a schematic circuit diagram of a second voltage stabilizing module in the power module of the present invention;

fig. 17 is a schematic circuit diagram of a switching power module of the present invention;

fig. 18 is a schematic circuit diagram of the key module of the present invention;

fig. 19 is a schematic circuit diagram of a memory module according to the present invention;

fig. 20 is a schematic diagram of a first interface circuit of the remote controller module of the present invention;

fig. 21 is a schematic diagram of a second interface circuit of the remote controller module of the present invention;

fig. 22 is a schematic circuit diagram of a 485 communication module according to the present invention;

fig. 23 is another schematic circuit diagram of the 485 communication module of the present invention;

fig. 24 is a schematic diagram of another circuit of the 485 communication module of the present invention;

fig. 25 is a schematic diagram of another circuit of the 485 communication module of the present invention;

fig. 26 is a schematic circuit diagram of the first switching value output module of the present invention;

fig. 27 is a schematic circuit diagram of a second switching value output module according to the present invention;

fig. 28 is a schematic circuit diagram of a third switching value output module according to the present invention;

fig. 29 is a schematic circuit diagram of a fourth switching value output module according to the present invention;

fig. 30 is a schematic circuit diagram of a seventh connector of the switching value output module of the present invention;

fig. 31 is a schematic circuit diagram of a circuit of a tenth pin of the pressure gauge control module according to the present invention;

fig. 32 is a schematic circuit diagram of another peripheral circuit of the manometer control module of the present invention;

fig. 33 is a schematic circuit diagram of yet another peripheral circuit of the manometer control module of the present invention;

fig. 34 is a schematic circuit diagram of another peripheral circuit of the manometer control module of the present invention.

In the figure: 1-a housing; 2-an LED display module; 31-mechanical waterproof power switch; 32-adjustment keys; 33-power key; 4-measuring range adjusting knob; 5-a power interface; 6-a pressure-leading interface; 7-support column.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

For understanding this embodiment, the following detailed description is made through embodiments on the intelligent pressure gauge of the constant-current constant-voltage continuous pump control system disclosed in the present invention.

Referring to fig. 1, fig. 2 and fig. 3, the present embodiment provides an intelligent pressure gauge of a constant-current constant-voltage continuous pump control system, which includes a stainless steel casing 1, a support column 7, and a pressure gauge control module, a pressure sensor, a pressure signal conditioning module, a PWM output module, an analog output module with an output voltage of 0V-5V, a speed-adjusting potentiometer, an LED display module 2, a key module and a power module, which are mounted on the casing 1;

the key module comprises a mechanical waterproof power switch 31 arranged on the back surface of the shell 1 and an adjusting key 32 arranged on the front surface of the shell 1, the supporting column 7 is fixed below the shell 1, a pressure leading interface 6 is arranged at the bottom end of the supporting column 7, and a measuring range adjusting button 4 connected with the pressure gauge control module is arranged on the supporting column 7; the lead for connecting the pressure sensor and the pressure signal conditioning module is arranged on the supporting column 7 in a penetrating way;

the pressure signal conditioning module, the PWM output module, the analog output module, the speed-regulating potentiometer, the LED display module 2, the key module and the power module are respectively connected with the pressure gauge control module; the PWM output module or the analog output module is connected with an engine.

Specifically, as shown in fig. 1, the housing 1 is circular, is made of stainless steel, and has a good antirust effect and a long service life. The bottom end of the shell 1 is fixedly connected with a supporting column 7, and the bottom end of the supporting column 7 is connected with a pressure guiding connector 6. The support column 7 is connected with a measuring range adjusting button 4 for adjusting the measuring range of the pressure gauge. The LED display module 2 comprises an LED display screen and an LED display screen interface, the LED display screen is arranged on the front surface of the shell 1, the back surface of the shell 1 is provided with a mechanical waterproof power switch 31, and the switch has waterproof property and can close the pressure gauge at any time.

As shown in fig. 4, which is a schematic circuit diagram of a pressure gauge control module, the embodiment adopts STC06R401TC as a main control chip. Fig. 5, 31 to 34 show schematic diagrams of peripheral circuits of the pressure gauge control module. As shown in fig. 5, the ninth pin of the main control chip is connected to one end of a fifteenth resistor R15, a thirteenth capacitor C13 and a seventeenth capacitor C17, the other end of the fifteenth resistor R15 is connected to the DVCC, and the other end of the thirteenth capacitor C13 and the other end of the seventeenth capacitor C17 are connected to the ground together.

As shown in fig. 31, the tenth pin of the main control chip is connected to two parallel capacitors, i.e., the fourteenth capacitor C14 and the eighteenth capacitor C18 are respectively connected to one end, and the other ends of the fourteenth capacitor C14 and the eighteenth capacitor C18 are grounded.

As shown in fig. 4, the seventeenth pin and the fifty-ninth pin of the main control chip are shorted, meanwhile, the seventeenth pin is connected to the three capacitors connected in parallel in fig. 32, that is, to one end of the fifteenth capacitor C15, the nineteenth capacitor C19 and the twenty-first capacitor C21, and the other end of the fifteenth capacitor C15, the nineteenth capacitor C19 and the twenty-first capacitor C21 is grounded.

Similarly, the twenty-third pin and the eighteenth pin of the main control chip are respectively connected to two capacitors connected in parallel in fig. 33, that is, the sixteenth capacitor C16 and the twentieth capacitor C20. As shown in fig. 34, a twenty-third capacitor C23 is connected to the VREF terminal of the main control chip. The VREF terminal is a reference voltage terminal, as shown in fig. 9, and is a reference module connected to the main control chip, and the reference module is configured to provide a reference voltage for the system.

And as shown in fig. 10, a pressure signal conditioning module, which is connected to the pressure SENSOR through a third connector SENSOR in fig. 11. The third connector SENSOR is provided with 4 terminals for connection to a pressure SENSOR, while the mV +/mV-terminal of the third connector SENSOR outputs a millivolt signal. Here, the pressure sensor is a diffused silicon pressure sensor.

As shown in fig. 8, the LED display screen interface in fig. 1 is connected to the LED display screen interface, and the LED display screen interface is further connected to the pressure gauge control module. Meanwhile, the power module provides power for the LED display screen.

In fig. 8, the LED display interface circuit includes a fourth connector P3, which includes 4 pins, a first pin of the fourth connector P3 is grounded, a second pin and a third pin of the fourth connector P3 are respectively connected to a thirteenth pin and a fourteenth pin of the pressure gauge control module, and a fourth pin of the fourth connector P3 is connected to a 6V power supply.

Further, the motor is a mechanical speed regulation motor, as shown in fig. 6, the PWM output module includes a first connector DJ, a forty-second resistor R42, a forty-sixth resistor R46, and a third transistor Q3;

a first end of the forty-sixth resistor R46 is connected with a twelfth pin of the pressure gauge control module, and a second end of the forty-sixth resistor R46 is connected with a base electrode of the third triode Q3; the first end of the forty-second resistor R42 is connected with the power supply module, the second end of the forty-second resistor R42 and the collector of the third triode Q3 are respectively connected with the second pin of the first connector DJ, the first pin of the first connector is connected with the power supply module, the third pin of the first connector and the emitter of the third triode Q3 are respectively grounded, and the first connector is connected with a model airplane steering engine of a mechanical speed regulation engine.

Preferably, the engine is an electronic speed regulation engine or an electronic injection electric regulation engine, as shown in fig. 7, the analog output module includes a second connector 0-5V, a first operational amplifier U13A, a second operational amplifier U13B, a fifty-ninth resistor R59, a sixty resistor R60, a sixty-first resistor R61, a sixty-second resistor R62, a sixty-third resistor R63, a sixty-fourth resistor R64, a sixty-fifth resistor R65, a sixty-sixth resistor R66, a forty-second capacitor C42, a forty-third capacitor C43, and a forty-fourth capacitor C44;

a first end of the sixty-first resistor R61 is connected to the fortieth pin of the pressure gauge control module, a second end of the sixty-first resistor R61 is connected to a first end of a sixty-fourth resistor R64 and a first end of the sixty-second resistor R62, respectively, and a second end of the sixty-fourth resistor R64 is grounded;

a second end of the sixty-second resistor R62 is connected to a first end of the forty-third capacitor C43 and a first end of the sixty-third resistor R63, respectively, a second end of the sixty-third resistor R63 is further connected to a first end of the forty-fourth capacitor C44 and a first end of the fifty-ninth resistor R59, respectively, a second end of the forty-third capacitor C43 and a second end of the forty-fourth capacitor C44 are grounded, respectively;

a second end of the fifty-ninth resistor R59 is connected to the positive electrode of the first operational amplifier U13A, the negative electrode of the first operational amplifier U13A is connected to the output end of the first operational amplifier U13A, the positive power supply terminal of the first operational amplifier U13A is grounded, and the negative power supply terminal of the first operational amplifier U13A and the first end of the forty-second capacitor C42 are connected together to the power module; a second terminal of the forty-second capacitor C42 is grounded;

a first end of the sixty resistor R60 is connected to the output end of the first operational amplifier U13A, a second end of the sixty resistor R60 is connected to the anode of the second operational amplifier U13B, and two ends of the sixty-five resistor R65 are connected to the cathode of the second operational amplifier U13B and the output end of the second operational amplifier U13B, respectively;

one end of the sixty-sixth resistor is connected with the negative electrode of the second operational amplifier U13B, the second end of the sixty-sixth resistor R66 is grounded, the output end of the second operational amplifier U13B is connected with the first pin of a second connector, and the second pin of the second connector is grounded;

As shown in fig. 12, the forty-ninth pin, the fifty-fifth pin, and the fifty-first pin of the main control chip are further connected with a speed-adjusting potentiometer respectively, the speed-adjusting potentiometer is MCP41010-I/SN, and is connected with the electronic speed-adjusting engine or the electronic injection electric regulation engine through a sixth connector DZ, and is used for sending a speed-adjusting signal to the main control chip, the main control chip sends a speed signal to the analog output module, and the analog output module sends the speed signal to the electronic speed-adjusting engine or the electronic injection electric regulation engine to adjust the rotating speed thereof.

As shown in fig. 2, the housing 1 is provided with a power interface 5, a circuit of the interface is as shown in fig. 13, the interface is further connected to the voltage monitoring module in fig. 14, and the voltage monitoring module is further connected to the first pin and the second pin of the main control chip.

The present embodiment is provided with two voltage stabilizing modules, i.e., a first voltage stabilizing module in fig. 15 and a second voltage stabilizing module in fig. 16, which respectively provide a stable voltage for the main control chip. As shown in fig. 17, the switching power supply module is used for supplying power to the remote controller module, each switching value module and the 485 communication module.

Fig. 18 shows a key module having 8-way keys. As shown in fig. 2, a button (mechanical waterproof power switch 31) is provided on the back of the housing 1, and a power button 33 and an adjustment button 32 are provided on the front, and the rest of the buttons are shown on the front of the housing 1 in fig. 1. In order to store the system parameters, as shown in fig. 19, a storage module connected to the main control chip is further provided, and the module adopts AT24C02BN-SP25-B as a storage chip.

Preferably, the pressure meter further comprises a remote controller module and a 485 communication module which are respectively connected with the pressure meter control module.

Here, the present embodiment is also equipped with a hand-held remote controller, and fig. 20 and 21 show a remote controller interface first interface circuit and a second interface circuit. Fig. 22-fig. 25 are schematic circuit diagrams of 485 communication modules, and a MAX3485-ESA 3.3V low power transceiver is adopted, so that a transmission rate of 10Mbps can be realized.

Preferably, the device further comprises a plurality of standby switching value output modules with output voltage of 0-12V, and the switching value output modules are respectively connected with the pressure gauge control module.

Here, as shown in fig. 26 to fig. 30, the switching value output module includes 4 spare switching value output modules, that is, a first switching value output module, a second switching value output module, a third switching value output module, and a fourth switching value output module, each of the switching value output modules is powered by a 12V power supply and outputs the switching value by using optical coupling isolation, and each of the switching value output modules is connected to the controlled module by using a seventh connector with 10 pins in fig. 30. The controlled module can be an exhaust electromagnetic valve module (some water pumps have a large amount of air during water drainage, and exhaust can be assisted through the module), a status indicator lamp module and the like.

In addition, in specific implementation, through the key module of this embodiment, the following pump connected to this embodiment can be in one of the following three states, which are a pumping state, a water absorption state, and a high speed state, and the LED display module 2 can also assist in displaying the state.

The water absorption state is: the 12V power supply is not output, and the electromagnetic valve is closed; when the speed regulation transmitter is connected with a mechanical speed regulation transmitter, a PWM signal is output, and the PWM value can be regulated in a user-defined way and is stored. When the electronic speed regulation engine or the electronic injection electric regulation engine is connected, the output voltage signal can be regulated in a user-defined mode, and the regulation range is 0-5V.

Like the water absorption state, the high speed state means: the 12V power supply is not output, and the electromagnetic valve is closed; when the speed-regulating transmitter is connected with the mechanical speed-regulating transmitter, a PWM signal is output, and the PWM value can be regulated in a user-defined mode, and a numerical value is stored. When the electronic speed regulation engine or the electronic injection electric regulation engine is connected, the output voltage signal can be regulated in a user-defined mode, and the regulation range is 0-5V. In contrast, the water pumping speed in the height state is higher than that in the water absorption state.

The pumping state is as follows: the upper limit value and the lower limit value of the pressure of the relay output 12V power supply can be set in a self-defined mode. When the voltage is lower than the lower limit value, a 12V power supply is output, and the value is stored. And when the voltage is higher than the upper limit value, stopping outputting the 12V power supply. When the pressure sensor is connected with a mechanical speed regulation engine, the output PWM signal changes along with the pressure, and the change range is between 0 and 2.0 ms; alternatively, the curve of the output PWM signal changing along with the pressure can be customized. When the pressure sensor is connected with an electronic speed regulation engine or an electronic injection electric regulation engine, an output voltage signal changes along with the pressure, and the change range is 0-5V; alternatively, the curve of the output voltage signal along with the change of the pressure can be customized.

In conclusion, the PWM output module of the embodiment can be connected with the mechanical speed regulation engine to realize the speed regulation of the mechanical speed regulation engine. The embodiment is also provided with an analog quantity output module with the output voltage of 0V-5V, and the analog quantity output module can be connected with an electronic speed regulation engine or an electronic injection electric regulation engine, so that the use of multiple models of submersible pump transmitters can be met. The shell is made of stainless steel, so that the antirust effect is good, and the service life is long; the LED display screen that can show various status information is adopted, still installs mechanical waterproof switch additional at the shell back, can close the manometer at any time.

In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An intelligent pressure gauge of a constant-current constant-voltage continuous pump control system is characterized by comprising a stainless steel shell, a support column, a pressure gauge control module, a pressure sensor, a pressure signal conditioning module, a PWM (pulse-width modulation) output module, an analog quantity output module with the output voltage of 0V-5V, a speed-regulating potentiometer, an LED display module, a key module and a power supply module, wherein the pressure gauge control module, the pressure sensor, the pressure signal conditioning module, the PWM output module, the analog quantity output module, the speed-regulating potentiometer, the LED display module, the key module and the power supply module are mounted on the shell;

2. The intelligent pressure gauge of the constant-current constant-voltage relay pump control system according to claim 1, further comprising a remote controller module and a 485 communication module respectively connected to the pressure gauge control module.

3. The intelligent pressure gauge of the constant-current constant-voltage continuous pump control system according to claim 1, further comprising a plurality of standby switching value output modules with output voltages of 0V-12V, wherein the switching value output modules are respectively connected with the pressure gauge control module.

4. The intelligent pressure gauge of a constant-current constant-voltage relay pump control system according to claim 1, wherein the motor is a mechanical speed-regulating motor, and the PWM output module comprises a first connector (DJ), a forty-second resistor (R42), a forty-sixth resistor (R46), and a third triode (Q3);

a first end of the forty-sixth resistor (R46) is connected with the pressure gauge control module, and a second end of the forty-sixth resistor (R46) is connected with a base electrode of the third triode (Q3); the first end of the forty-second resistor (R42) is connected with the power supply module, the second end of the forty-second resistor (R42) and the collector electrode of the third triode (Q3) are respectively connected with the second pin of a first connector (DJ), the first pin of the first connector is connected with the power supply module, the third pin of the first connector and the emitter electrode of the third triode (Q3) are respectively grounded, and the first connector is connected with a model airplane steering engine of a mechanical speed regulation engine.

5. The intelligent pressure gauge of a constant-current constant-voltage relay pump control system according to claim 1, wherein the engine is an electronic speed-regulating engine or an electronic-injection electric-regulation engine, and the analog output module comprises a second connector, a first operational amplifier (U13A), a second operational amplifier (U13B), a fifty-ninth resistor (R59), a sixty resistor (R60), a sixty-first resistor (R61), a sixty-second resistor (R62), a sixty-third resistor (R63), a sixty-fourth resistor (R64), a sixty-fifth resistor (R65), a sixty-sixth resistor (R66), a forty-second capacitor (C42), a forty-third capacitor (C43) and a fourth capacitor (C44);

a first end of the sixty-first resistor (R61) is connected to the pressure gauge control module, a second end of the sixty-first resistor (R61) is connected to a first end of a sixty-fourth resistor (R64) and a first end of the sixty-second resistor (R62), respectively, and a second end of the sixty-fourth resistor (R64) is grounded;

a second terminal of the sixty-second resistor (R62) is connected to the first terminal of the forty-third capacitor (C43) and the first terminal of the sixty-third resistor (R63), respectively, a second terminal of the sixty-third resistor (R63) is further connected to the first terminal of the forty-fourth capacitor (C44) and the first terminal of the fifty-ninth resistor (R59), respectively, a second terminal of the forty-third capacitor (C43) and the second terminal of the forty-fourth capacitor (C44) are grounded, respectively;

a second end of the fifty-ninth resistor (R59) is connected with a positive electrode of the first operational amplifier (U13A), a negative electrode of the first operational amplifier (U13A) is connected with an output end of the first operational amplifier (U13A), a positive power supply end of the first operational amplifier (U13A) is grounded, and a negative power supply end of the first operational amplifier (U13A) and a first end of the forty-second capacitor (C42) are connected with a power module together; a second terminal of the forty-second capacitor (C42) is grounded;

a first end of the sixty resistor (R60) is connected with an output end of the first operational amplifier (U13A), a second end of the sixty resistor (R60) is connected with an anode of the second operational amplifier (U13B), and two ends of the sixty-five resistor (R65) are respectively connected with a cathode of the second operational amplifier (U13B) and an output end of the second operational amplifier (U13B);

one end of the sixty-sixth resistor is connected with the negative electrode of the second operational amplifier (U13B), the second end of the sixty-sixth resistor (R66) is grounded, the output end of the second operational amplifier (U13B) is connected with the first pin of a second connector, and the second pin of the second connector is grounded;

and the second connector is connected with a control module of the electronic speed regulation engine or connected with a control module of the electronic injection electric regulation engine.