CN216623011U - Intelligent residual pressure controller - Google Patents

Abstract

The utility model provides an intelligent residual pressure controller which comprises a main control circuit, two bus slave station interfaces, two bus master station interfaces, a power module, a display module, a dry contact linkage circuit and a relay pressure relief valve control circuit, wherein the main control circuit comprises a main control circuit, a secondary control circuit and a relay pressure relief valve control circuit; the main control circuit is respectively connected with the two-bus slave station interface, the two-bus master station interface, the power supply module, the display module, the dry contact linkage circuit and the relay pressure relief valve control circuit, the two-bus master station module is connected with the excess pressure sensor in a non-polarity two-wire system connection mode, and the two-bus slave station interface is connected with the excess pressure monitoring host in a non-polarity two-wire system connection mode. The utility model has simple and convenient wiring, solves the problem of signal acquisition in key areas in the field of fire fighting, and integrally improves the technical level of a residual pressure monitoring system.

Description

Intelligent residual pressure controller

Technical Field

The utility model relates to the technical field of fire-fighting equipment, in particular to an intelligent excess pressure controller.

Background

With the progress of science and technology and the arrival of information-based society, the escape technology of fire-fighting evacuation channels is revolutionized along with the progress of the times. The application of the residual pressure monitoring system is a revolution in the time connection in the fire-fighting work. The working state of the intelligent excess pressure controller is that the intelligent excess pressure controller automatically inspects for 24 hours in real time and gives an alarm prompt to abnormal excess pressure in real time. When a fire occurs, the system can automatically regulate and control the air output of the mechanical pressurization air supply system, and can also remotely control the ventilation system at the fire control center so as to ensure that the residual pressure of the evacuation channel is in an effective controlled state when the fire occurs, prevent the smoke from diffusing, enable escapers to easily open the fireproof door to escape and ensure the safe evacuation of the personnel. The whole purpose of the residual pressure monitoring system is to keep the residual pressure values of the staircases and the front chambers within the national standard range, prevent harmful smoke from entering, ensure the normal opening of a fire door and ensure the smoothness of a life passage.

The key area signal acquisition in the fire fighting field is of great help to improve the technical level of the whole monitoring system, and the number of key areas in the fire fighting field is large, so that the wiring is correspondingly complicated, and therefore an intelligent residual pressure controller with simple and convenient wiring is needed to be provided.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the intelligent excess pressure controller which is simple and convenient to wire, solves the problem of signal acquisition in key areas in the fire fighting field and integrally improves the technical level of an excess pressure monitoring system.

In order to achieve the purpose, the utility model adopts the following specific technical scheme:

an intelligent residual pressure controller comprises a main control circuit, two bus slave station interfaces, two bus master station interfaces, a power supply module, a display module, a dry contact linkage circuit and a relay pressure relief valve control circuit; the main control circuit is respectively connected with the two-bus slave station interface, the two-bus master station interface, the power supply module, the display module, the dry contact linkage circuit and the relay pressure relief valve control circuit, the two-bus master station module is connected with the excess pressure sensor in a non-polarity two-wire system connection mode, and the two-bus slave station interface is connected with the excess pressure monitoring host in a non-polarity two-wire system connection mode.

Preferably, the bus master station further comprises an AC-DC voltage reduction module and a DC-DC voltage stabilization module, wherein the AC-DC voltage reduction module converts an alternating input voltage into a direct current voltage and outputs the direct current voltage to the DC-DC voltage stabilization module, and the DC-DC voltage stabilization module outputs a stabilized voltage to the master control circuit and the two-bus master station interface.

Preferably, the DC-DC voltage stabilizing module has two paths, one path outputs 3.3V voltage, and the other path outputs 12V voltage.

Preferably, the display device further comprises a display module, and the main control circuit is connected with the display module through an I2C interface.

Preferably, the device also comprises a key circuit, and the main control circuit is connected with the key circuit.

Preferably, still include the LED pilot lamp, master control circuit passes through the LED drive circuit and is connected with the LED pilot lamp, the quantity of LED pilot lamp is a plurality of, at least including starting pilot lamp, automatic pilot lamp, trouble pilot lamp and warning pilot lamp.

Preferably, the interface of the slave station of the two buses is connected with a rectifier bridge circuit.

Preferably, the dry contact linkage circuit is connected with a fire alarm system.

The utility model has the beneficial effects that: the wiring is simple and convenient, the problem of signal acquisition in key areas in the fire fighting field is solved, and the technical level of the residual pressure monitoring system is improved on the whole.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic circuit diagram of an intelligent residual voltage controller according to the present invention;

FIG. 2 is a functional block diagram of a residual pressure monitoring system constructed in accordance with the present invention;

FIG. 3 is a circuit schematic of the master control circuit and the dry contact interlock circuit;

FIG. 4 is a circuit schematic of a relay relief valve control circuit;

FIG. 5 is a circuit schematic of a two bus slave interface;

FIG. 6 is a circuit schematic of a two bus master interface.

In the figure, 1-intelligent residual pressure controller, 2-residual pressure sensor, 3-residual pressure monitoring host and 4-relief valve actuator.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments given herein without any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1-6, the present invention provides an intelligent residual pressure controller, which includes a main control circuit, two bus slave station interfaces, two bus master station interfaces, a power module, a display module, a dry contact linkage circuit, and a relay relief valve control circuit; the main control circuit is respectively connected with the two-bus slave station interface, the two-bus master station interface, the power supply module, the display module, the dry contact linkage circuit and the relay pressure relief valve control circuit, the two-bus master station module is connected with the excess pressure sensor in a non-polarity two-wire system connection mode, and the two-bus slave station interface is connected with the excess pressure monitoring host in a non-polarity two-wire system connection mode.

The two-bus slave station interface adopts a PB300 slave station communication chip of a two-bus technology, adopts a mode of voltage sending and current signal returning, provides high communication and anti-interference capacity, and can reliably and stably operate in various electromagnetic environments. The intelligent residual voltage controller and the residual voltage monitoring host loop adopt a non-polar two-wire system connection mode, the communication is stable and reliable, and the wiring is simple and convenient.

The two bus master station interfaces adopt EV620 master station chips, have the function of detecting short circuits, can quickly detect and close MOSFET output when external wiring is short-circuited, and simultaneously, the external high-power MOSFET is used to guarantee that the module cannot be damaged under the instantaneous condition of short circuit. The intelligent residual pressure controller and the residual pressure sensor loop adopt a non-polar two-wire system connection mode, the communication is stable and reliable, and the wiring is simple and convenient.

Preferably, the bus master station further comprises an AC-DC voltage reduction module and a DC-DC voltage stabilization module, wherein the AC-DC voltage reduction module converts an alternating input voltage into a direct current voltage and outputs the direct current voltage to the DC-DC voltage stabilization module, and the DC-DC voltage stabilization module outputs a stabilized voltage to the master control circuit and the two-bus master station interface. The DC-DC voltage stabilizing module has two paths, one path outputs 3.3V voltage, and the other path outputs 12V voltage. Conversion efficiency is more than 90%, makes intelligent residual voltage controller consumption littleer, and one way converts 24V voltage into 3.3V and supplies the master control circuit to use, and another way converts 24V into 12V and supplies EV620 main website chip to use.

Preferably, the display device further comprises a display module, and the main control circuit is connected with the display module through an I2C interface. The display module adopts 2.0 cun display screen to show the residual pressure value of gathering in real time, information such as sensor state value.

Preferably, the intelligent control system further comprises a key circuit and a buzzer, and the main control circuit is connected with the key circuit and the buzzer. The key circuit sends key control information to the main control circuit, and man-machine interaction of the controller can be achieved through the keys and the LCD module.

Preferably, still include the LED pilot lamp, master control circuit passes through the LED drive circuit and is connected with the LED pilot lamp, the quantity of LED pilot lamp is a plurality of, at least including starting pilot lamp, automatic pilot lamp, trouble pilot lamp and warning pilot lamp. The operation lamp-the system twinkles when in operation, the communication lamp-the communication data receiving and sending, the automatic mode lamp, the fault lamp-the abnormal communication fault lamp is usually on, the alarm lamp is usually on when in overpressure, and the start lamp-the overpressure to open the pressure release valve controller is usually on.

Preferably, the interface of the slave station of the two buses is connected with a rectifier bridge circuit. The MB6S rectifier bridge circuit is used for realizing the non-polar wiring of the module, so that the installation is more convenient and faster.

Preferably, the dry contact linkage circuit is connected with a fire alarm system. The fire alarm system sends a fire-fighting linkage signal to the intelligent residual pressure controller, and the intelligent residual pressure controller can process an externally input fire-fighting linkage signal and a received alarm signal through the access of the dry contact linkage circuit.

The relay pressure release valve control circuit realizes the forward rotation and the reverse rotation of the pressure release valve, the fan is opened by the forward rotation when the pressure is over-pressure, and the fan is closed by the reverse rotation when the pressure is normal.

The working principle of the utility model is as follows:

the main control circuit sends a data acquisition signal to the residual pressure sensor through the two bus master station interfaces, the main control circuit sends a control signal to the relay pressure relief valve control circuit according to the data acquisition signal, and the collected residual pressure sensor information is transmitted to the residual pressure monitoring host through the two bus slave station interfaces. Meanwhile, the main control circuit displays the collected residual pressure information through an LCD display module, the LED indicator lamp is used for displaying the opening of the pressure relief valve or the residual pressure overpressure alarm, and the buzzer is used for carrying out sound prompt of the residual pressure alarm.

The intelligent excess pressure controller 1 is respectively connected with an excess pressure sensor 2, an excess pressure monitoring host 3 and a pressure relief actuator 4 to form an excess pressure monitoring system.

The utility model has the beneficial effects that: the intelligent residual voltage controller and the residual voltage monitoring host loop adopt a non-polar two-wire system connection mode, the communication is stable and reliable, and the wiring is simple and convenient. The intelligent residual pressure controller and the residual pressure sensor loop adopt a non-polar two-wire system connection mode, the communication is stable and reliable, and the wiring is simple and convenient. The problem of fire control field key regional signal acquisition is solved, residual pressure monitored control system's technical level has promoted on the whole.

In light of the foregoing description of the preferred embodiments of the present invention, those skilled in the art can now make various alterations and modifications without departing from the scope of the utility model. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (8)

1. An intelligent residual pressure controller is characterized by comprising a main control circuit, two bus slave station interfaces, two bus master station interfaces, a power supply module, a display module, a dry contact linkage circuit and a relay pressure relief valve control circuit; the main control circuit is respectively connected with the two-bus slave station interface, the two-bus master station interface, the power supply module, the display module, the dry contact linkage circuit and the relay pressure relief valve control circuit, the two-bus master station module is connected with the excess pressure sensor in a non-polarity two-wire system connection mode, and the two-bus slave station interface is connected with the excess pressure monitoring host in a non-polarity two-wire system connection mode.

2. The intelligent residual voltage controller according to claim 1, further comprising an AC-DC voltage reducing module and a DC-DC voltage stabilizing module, wherein the AC-DC voltage reducing module converts an AC input voltage into a DC voltage and outputs the DC voltage to the DC-DC voltage stabilizing module, and the DC-DC voltage stabilizing module outputs a stabilized voltage to the main control circuit and the two-bus master station interface.

3. The intelligent residual voltage controller according to claim 2, wherein the DC-DC voltage stabilizing module has two paths, one path outputting 3.3V voltage and the other path outputting 12V voltage.

4. The intelligent residual pressure controller according to claim 1, further comprising a display module, wherein the main control circuit is connected with the display module through an I2C interface.

5. The intelligent residual pressure controller according to claim 1, further comprising a key circuit, wherein the main control circuit is connected to the key circuit.

6. The intelligent excess pressure controller of claim 1, further comprising a plurality of LED indicator lamps, wherein the main control circuit is connected with the LED indicator lamps through an LED driving circuit, and the LED indicator lamps at least comprise a starting indicator lamp, an automatic indicator lamp, a fault indicator lamp and an alarm indicator lamp.

7. The intelligent residual voltage controller according to claim 1, wherein a rectifier bridge circuit is connected to the slave station interface of the two buses.

8. The intelligent excess pressure controller of claim 1, wherein the dry contact linkage circuit is connected to a fire alarm system.

Images