CN213235522U

CN213235522U - Double-speed fan controller

Info

Publication number: CN213235522U
Application number: CN202022033193.4U
Authority: CN
Inventors: 符耐芳; 周玉柱; 陈兴旺
Original assignee: Henan Center Intelligent Electric Technology Co ltd
Current assignee: Henan Center Intelligent Electric Technology Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-05-18
Anticipated expiration: 2030-09-16

Abstract

The application discloses a double-speed fan controller, which relates to the field of fan control and aims to solve the problems of high equipment and personnel input cost, high manpower maintenance cost, poor reliability of field equipment operation and high accident rate; the input amount detection circuit, the output control circuit, the key input circuit, the LED indicating circuit, the communication module and the power supply module are all connected to an I/O port of the main control unit, so that systematization and intellectualization of the fan control cabinet are realized.

Description

Double-speed fan controller

Technical Field

The utility model relates to a fan control field, concretely relates to double speed fan controller.

Background

The double-speed fan controller is used for a fan control box and has the functions of fan start-stop control, fan state monitoring and fan and external equipment communication; the intelligent control, can receive external equipment signal, possess RS-485 communication and remote control function, the acquisition and the control of fan state of being convenient for relevant personnel from this. The double-speed fan controller can mostly meet the requirement of intelligent control of starting and stopping of the fan, but has certain difference aiming at the communication and compatible functions of external equipment.

In practical application, although the control of low-speed operation and high-speed operation of the fan, manual control and automatic control can be met through interlocking of secondary components such as contactors and the like, the state of the fan can be obtained only through field inspection, remote monitoring cannot be achieved, and the controller is an independent unit, cannot receive signals of external equipment, cannot be opened, and cannot be used for cooperative work of a system. Therefore, the investment cost of equipment and personnel, the maintenance cost of manpower, the poor reliability of the operation of field equipment and high accident rate are increased.

SUMMERY OF THE UTILITY MODEL

The application discloses double speed fan controller realizes systematization, the intellectuality of fan switch board.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

a double-speed fan controller comprises a main control unit, an input amount detection circuit, an output control circuit, a key input circuit, an LED indicating circuit, a communication module and a power supply module; the input amount detection circuit, the input control circuit, the key input circuit, the LED indicating circuit, the communication module and the power supply module are all connected to an I/O port of the main control unit.

Preferably, the input detection circuit comprises a four-pin optical coupler and two resistors, wherein the anode of the input end of the optical coupler is connected to a terminal to be detected through one resistor, the cathode of the input end of the optical coupler is connected with a power supply, the emitter of the output end of the optical coupler is grounded, and the collector of the output end of the optical coupler is connected with one pull resistor and is simultaneously connected to the I/O port of the main control module.

Preferably, the tested terminal comprises a fire fighting input and output module, a forced starting module and a DDC controller.

Preferably, the communication module adopts RS-485.

Preferably, the LED indicating circuit comprises a resistor, an audible and visual alarm and an LED indicating lamp, and the audible and visual alarm and the LED indicating lamp are respectively connected to the I/O end of the main control module through the resistor.

Preferably, the output control circuit comprises a control relay and a switch tube, wherein the input end of the control relay is connected with the switch tube, and the output end of the control relay is connected with the controlled load.

Preferably, the switching tube is an NPN triode, a coil of the control relay is connected in parallel with a diode D1 for suppressing surge, one end of an input end of the control relay is connected with the 5V power supply, and the other end of the input end of the control relay is connected to a collector of the NPN triode.

This application adopts to open income volume detection circuitry, control circuit, key input circuit, LED indicating circuit, communication module and power module to be connected to the main control unit, improves the stability of this type of equipment and the comprehensive of function, specially increases the compatibility to external signal to guarantee field device's safe operation realizes systematization, the intellectuality of fan control cabinet. The RS-485 communication module is added, so that the maintenance and the inspection are facilitated, and the manpower inspection and equipment maintenance cost is reduced; and through the LED indicating circuit, the device has a high-speed fault audible and visual alarm function and a state display function, and is convenient for workers to check.

Drawings

FIG. 1 is a view of the structure of the present invention;

FIG. 2 is a schematic view showing a test connection structure of the device according to embodiment 1;

FIG. 3 is a schematic diagram showing the connection of an open control circuit in embodiment 2;

FIG. 4 is a schematic view showing the connection of an LED indicator lamp in the LED indicating circuit according to embodiment 2;

fig. 5 is a schematic diagram of the connection of the intrusion amount detection circuit in embodiment 2.

Detailed Description

The application discloses a double-speed fan controller, which is structurally shown in fig. 1 and comprises a main control unit, an input amount detection circuit, an output control circuit, a key input circuit, an LED indicating circuit, a communication module and a power module; the input amount detection circuit, the input control circuit, the key input circuit, the LED indicating circuit, the communication module and the power supply module are all connected to an I/O port of the main control unit.

The equipment has two working modes of an automatic mode and a manual mode, the working modes are switched by a key input circuit, a circuit capable of realizing mode switching is a common technology in the field, the circuit application capable of realizing mode switching is selected, under the automatic mode, the intelligent control of the fan can be realized, according to actual signals, the fan is controlled to run at low speed or at high speed, wherein the high-speed running priority is higher than that of the low-speed running, so that under the condition that the fan runs at normal low speed, due to the fire input or the forced starting signal, the fan is switched to the high-speed running state of the fan

The detection terminal of the input detection circuit is connected to the fire control input/output module, the forced start module and the DDC controller, the input detection circuit outputs detected state information to the main control unit in a high/low level mode, the main control unit sends a control instruction according to the received state information, the input control circuit carries out remote control on a load execution instruction of an output point to a fan, the main control unit sends a control instruction to the LED indicating circuit according to the received state information, and state display is carried out through an indicator lamp or audible and visual alarm is carried out through an audible and visual alarm according to instructions; the communication module is used for the on-site communication with the background control center of the double-speed fan controller, and uploads the state information received by the main control module to a far end to realize information interaction.

Example 1

The following describes the testing method of the device of the present application with reference to fig. 2.

(1) Connecting a power interface of the equipment to a mains supply, and connecting a testing device with the equipment: the input quantity analog state point is connected to a detection terminal of the corresponding input quantity detection circuit; the output terminal of the open control circuit is connected with a corresponding load, for example, a 220V indicating lamp is used for displaying a 220V open point; the communication module is connected with the remote computer through RS-485 conversion USB.

(2) Testing the communication module: the equipment is powered on, and whether the indication and the data information of the normal connection of the equipment exist in a serial port receiving window of a remote computer or not is checked.

(3) Testing an input quantity detection circuit: and respectively carrying out state change on the key input points corresponding to the input quantity simulation state points according to the control logic to simulate state signals, checking the display condition of an LED display module of the equipment or the action condition of the load of the input point, and judging whether the input quantity simulation state points correspond to the load control logic or not.

(4) And (3) testing a control circuit: and issuing a remote start-stop signal from the background, and checking whether the load connected with the corresponding remote control output terminal acts correctly.

Example 2

The open-out control circuit, the LED indicating circuit and the open-in quantity detection circuit can be obtained by common technologies in the field.

The control principle of the control circuit developed by the present application is described below with reference to fig. 3:

in the open-circuit control circuit of the embodiment, the output end of a control relay is connected to two ends of a controlled load, a coil of the control relay is connected in parallel with a diode D1 for suppressing surge, one end of the input end of the control relay is connected with a 5V power supply, the other end of the input end of the control relay is connected to the collector of an NPN triode Q2 selected as a switching tube, and a control signal sent by a main control module flows into the base of the NPN triode Q2 through a resistor R22. When the control signal is at high level, the NPN triode Q2 is conducted, the relay is electrified, the relay contact is attracted, and the controlled loads connected to the two ends of the relay output end are connected, so that the control effect is achieved.

The connection method of the LED indicator in the LED indicating circuit of this embodiment is as shown in fig. 4, where the output end of the main control module is connected to the LED indicator through a resistor R1, and the LED indicator is controlled by the level output by the main control module.

Fig. 5 shows a schematic diagram of the input level detection circuit in this embodiment, an input terminal anode of the optocoupler U4 is connected to a terminal to be detected through a resistor R3, an input terminal cathode is connected to a power supply of-12V, an output terminal emitter is grounded, and an output terminal collector is connected to a pull-up resistor R35 and is also connected to an I/O port of the main control module. When the detected terminal is monitored to be switched on, a high level is input into the optocoupler U4 through the resistor R3, the optocoupler U4 connected with the negative power supply is activated and conducted, the master control module obtains low level input, when the optocoupler is not conducted, the master control module obtains high level input under the action of a pull-up resistor, and switching value is judged through the change of the high level and the low level.

Claims

1. The utility model provides a double speed fan controller, installs in fan switch board, its characterized in that: the intelligent control system comprises a main control unit, an input amount detection circuit, an output control circuit, a key input circuit, an LED indicating circuit, a communication module and a power supply module;

the input amount detection circuit, the output control circuit, the key input circuit, the LED indicating circuit, the communication module and the power supply module are all connected to an I/O port of the main control unit.

2. The two-speed wind turbine controller of claim 1, wherein: the input detection circuit comprises a four-pin optocoupler and two resistors, wherein the anode of the input end of the optocoupler is connected to a terminal to be detected through one resistor, the cathode of the input end of the optocoupler is connected with a power supply, the emitter of the output end of the optocoupler is grounded, and the collector of the output end of the optocoupler is connected with a pull-up resistor and is simultaneously connected to an I/O port of the main control module.

3. The two-speed wind turbine controller of claim 2, wherein: the tested terminal comprises a fire-fighting input and output module, a forced starting module and a DDC controller.

4. The two-speed wind turbine controller of claim 1, wherein: and the communication module adopts an RS-485 module.

5. The two-speed wind turbine controller of claim 1, wherein: the LED indicating circuit comprises a resistor, an audible and visual alarm and an LED indicating lamp, wherein the audible and visual alarm and the LED indicating lamp are respectively connected to the I/O port of the main control module through the resistor.

6. The two-speed wind turbine controller of claim 1, wherein: the output control circuit comprises a control relay and a switch tube, wherein the input end of the control relay is connected with the switch tube, and the output end of the control relay is connected to a controlled load.

7. The two-speed wind turbine controller of claim 6, wherein: the switching tube adopts an NPN triode, a coil of the control relay is connected with a diode D1 for suppressing surge in parallel, one end of the input end of the control relay is connected with a 5V power supply, and the other end of the input end of the control relay is connected to a collector electrode of the NPN triode.