CN112269350A

CN112269350A - Automatic door opening device based on PLC discharges carbon monoxide gas

Info

Publication number: CN112269350A
Application number: CN202011238665.8A
Authority: CN
Inventors: 王葛; 温建阳; 张小涵; 王峻峰; 陈士博; 吕正芳
Original assignee: Yanshan University
Current assignee: Yanshan University
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-01-26

Abstract

The invention discloses an automatic door opening device for discharging carbon monoxide gas based on a PLC (programmable logic controller), which comprises a bottom plate serving as a main body and having a supporting function, and also comprises a driving device for realizing the action of pushing a door, and an intelligent assembly serving as a control and alarm function, wherein the driving device comprises a driving motor, a main driving shaft connected with an output shaft of the driving motor, and a gear connected with the main driving shaft; the invention has strong durability, strong environmental adaptability, high sensitivity, simple structure, convenient maintenance and replacement and wide applicability.

Description

Automatic door opening device based on PLC discharges carbon monoxide gas

Technical Field

The invention relates to the technical field of intelligent household equipment, in particular to an automatic door opening device for discharging carbon monoxide gas based on a PLC (programmable logic controller).

Background

The demand of coal all over the country is gradually increased in winter, and if the operation is improper in the coal burning process or the quality of the coal is in problem, the coal in the furnace is possibly not fully combusted, and toxic gases such as carbon monoxide are generated. Most households therefore began to install carbon monoxide alarms if this situation occurred at night while people were asleep with serious consequences. The prior art is also continuously improving on this, for example:

the patent (CN109083512A) relates to an intelligent door lock and its using method, including a door lock body and an automatic control system; the door lock body comprises a lock shell, a lock tongue and a lock tongue driving piece; the automatic control system comprises a programmable PLC controller, a sensor component, an alarm component and a wireless remote communication component; the sensor assembly comprises an infrared proximity sensor, a first high-definition camera, a temperature sensor, a carbon monoxide concentration sensor and a methane concentration sensor; the alarm component comprises a light scintillator or an alarm; the wireless remote communication assembly comprises a wireless transceiver and a wireless network module, and the wireless transceiver sends the related information stored in the memory to the user intelligent mobile terminal or the community property office monitoring center through the wireless network module. Although the PLC is adopted for control, the infrared proximity sensor is adopted, and the remote terminal is needed for operation, so that the operation is inconvenient and the maintenance is troublesome.

Disclosure of Invention

The invention aims to provide an automatic door opening device capable of automatically monitoring the concentration of carbon monoxide and automatically opening a door, wherein the automatic door opening device can discharge carbon monoxide gas based on a PLC (programmable logic controller).

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

an automatic door opening device based on a PLC (programmable logic controller) for discharging carbon monoxide gas comprises a bottom plate serving as a main body and having a supporting function, and further comprises a driving device for realizing the action of pushing a door, and an intelligent assembly serving as a control and alarm function, wherein the driving device comprises a driving motor, a main driving shaft connected with an output shaft of the driving motor and a gear connected with the main driving shaft, a rack arranged in a sliding groove in the bottom plate in a sliding manner is meshed below the gear, clamping blocks are arranged below the rack and on one side of the bottom plate, and a spring is arranged between the two clamping blocks;

the intelligent assembly comprises a PLC (programmable logic controller), a force sensor, a carbon monoxide sensor and an alarm, the PLC is installed on the bottom plate, and the force sensor is installed in a sliding groove corresponding to the tail of the rack in the reset state.

The technical scheme of the invention is further improved as follows: the bottom plate is further provided with a motor base, a coupler, a bearing seat and a shaft sleeve, the driving motor is arranged on the motor base, a rotating shaft of the driving motor is connected with the main driving shaft through the coupler, the shaft sleeve is arranged on the main driving shaft, the main driving shaft and the gear are connected through a key, the bearing seat is sleeved on the main driving shaft, and the bearing seat is located at two ends of the gear.

The technical scheme of the invention is further improved as follows: the intelligent assembly further comprises a control button and an emergency stop button, and the carbon monoxide sensor, the control button, the emergency stop button and the alarm can be installed at any indoor position.

The technical scheme of the invention is further improved as follows: the driving motor and the alarm are electrically connected with the output end of the PLC, and the control button, the emergency stop button, the force sensor and the carbon monoxide sensor are electrically connected with the input end of the PLC.

The technical scheme of the invention is further improved as follows: when the spring is in the original length, the rack is just completely positioned in the bottom plate.

The technical scheme of the invention is further improved as follows: the gear is a half-tooth gear.

Due to the adoption of the technical scheme, the invention has the technical progress that:

the invention adopts the force sensor, the durability is strong, the environmental suitability is strong, the sensitivity is high, the transmitted signal is accurate, the force signal can be converted into the electric signal in time and is transmitted to the PLC controller to control other parts to make corresponding actions, meanwhile, the invention adopts the combination of the gear rack and the spring inside, the structure is simple, the maintenance and the replacement are convenient, in addition, the use of the remote terminal is reduced by adopting the button control, the cost is saved, the operation is convenient, the invention is suitable for any people, and the invention can be stopped by the emergency stop button in time by adopting the combination of the control button and the emergency stop button when the fault occurs, and the safety is strong.

Drawings

Fig. 1 is a structural top view of an automatic door opener based on a PLC controller according to the present invention;

FIG. 2 is a front view of the structure of an automatic door opener based on a PLC controller according to the present invention;

FIG. 3 is a left side view of the structure of an automatic door opener based on a PLC controller according to the present invention;

the device comprises a base, a base plate, a shaft coupling, a spring, a gear, a rack, a gear base, a motor base, a base plate, a shaft coupling, a force sensor, a driving motor, a driving shaft, a sliding groove, a driving shaft, a sliding shaft, a.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

as shown in fig. 1, an automatic door opener for discharging carbon monoxide gas based on a PLC controller includes a bottom plate 6 serving as a main body and functioning as a support, a motor base 5 is provided on the bottom plate 6 for fixedly mounting a driving motor 12 described below, and a sliding groove 14 provided at one side of the motor base 5 is further provided on the bottom plate 6 for slidably mounting a rack 4 described below.

The door pushing device further comprises a driving device for realizing door pushing action and an intelligent assembly with control and alarm functions, wherein as shown in figure 2 and combined with figure 3, the driving device comprises a driving motor 12, a main driving shaft 13, a coupler 7, a bearing seat 10, a shaft sleeve 9, a gear 3, a rack 4, a spring 2 and a fixture block 1, the driving motor 12 is fixedly arranged on a motor base 5, a rotating shaft of the driving motor 12 is connected with the main driving shaft 13 through the coupler 7, the shaft sleeve 9 is arranged on the main driving shaft 13, the main driving shaft 13 is connected with the gear 3 through a key, the gear 3 is a half-tooth gear, so that the effect of resetting the rack 4 through the spring 2 after the door is pushed open is realized, the bearing seat 10 is sleeved on the main driving shaft 13 and positioned at two ends of the gear 3, the bearing seat 10 and the shaft sleeve 9 jointly play a role of axial positioning, the rack 4 is arranged in a sliding chute 14, the clamping blocks 1 are arranged below the rack 4 and on one side of the bottom plate 6, the spring 2 is fixedly arranged between the two clamping blocks 1, and when the spring 2 is in the original length, the rack 4 is just positioned in the sliding groove 14 of the bottom plate 6, so that the tightness of the door can be conveniently closed.

As shown in fig. 1, the intelligent assembly includes a PLC controller 16, a force sensor 11, a carbon monoxide sensor 17, a control button 18, an emergency stop button 8 and an alarm 15, wherein the PLC controller 16 is installed on the bottom plate 6 on one side of the motor base 5, and the force sensor 11 is installed in a chute corresponding to the tail of the rack in the reset state of the rack, so as to receive a force signal transmitted by the rack 4, convert the force signal into an electrical signal and transmit the electrical signal to the PLC controller 16, so that the PLC controller 16 controls the driving motor 12 to perform corresponding actions.

At this moment, for convenience of use, the carbon monoxide sensor 17, the control button 18, the emergency stop button 8 and the alarm 15 can be installed at any indoor position, wherein the carbon monoxide sensor 17 is only required to be convenient for monitoring the indoor carbon monoxide concentration, the control button 18 and the emergency stop button 8 are installed at positions convenient for a resident to operate, the alarm 15 is installed at a position with a strong eye-catching warning effect, the control button 18 is used for the resident to turn off the alarm 15 when the resident finds that the alarm is given, and the emergency stop button 8 is used for controlling the driving motor 12 to stop when the force sensor 11 runs abnormally.

The driving motor 12, the force sensor 11, the carbon monoxide sensor 17, the control button 18, the emergency stop button 8 and the alarm 15 are electrically connected with the PLC 16. Here, it should be specifically noted that the driving motor 12 and the alarm 15 are electrically connected to an output terminal of the PLC controller 16, and the control button 18, the emergency stop button 8, the force sensor 11, and the carbon monoxide sensor 17 are electrically connected to an input terminal of the PLC controller 16.

When the carbon monoxide leakage detection device is used, the carbon monoxide sensor 17 senses carbon monoxide leakage, converted electric signals are input into the PLC 16, the PLC 16 controls the driving motor 12 and the alarm 15 to start together, the driving motor 12 drives the main driving shaft 13 to rotate, the main driving shaft 13 and the gear 3 are connected through a key, the gear 3 is driven to rotate by the shaft, the gear 3 is meshed with the rack 4, the rack 4 overcomes the elastic force of the spring 2 to extend out under the action of meshing force, and the door can be opened after the rack overcomes the friction force between the door and a door frame. And after the rack 4 stretches out to a certain position, because the gear 3 is a half-tooth gear, the gear 3 is not meshed with the rack 4 any more, at this time, the rack 4 resets to the chute 14 of the bottom plate 6 under the action of the elastic force of the spring 2, because the rack 4 is completely arranged inside the bottom plate 6 under the original length state of the spring 2, the rack 4 is also completely reset to the inside of the bottom plate 6 by the spring 2 after the original length of the spring 2 is finally recovered, the tail part of the rack 4 collides with the force sensor 11 in the process, the force signal is converted into an electric signal by the sensor and is transmitted to the PLC controller 16, the PLC controller 16 controls the motor to stop running, but the running of the alarm 15 cannot be influenced until a person finds the situation, and the alarm 15 is turned off by a manual switch. The stop button is mainly used for emergently stopping the motor when the sensor runs wrongly.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. An automatic door opener based on PLC controller discharges carbon monoxide gas, includes bottom plate (6) as the supporting role of main part, its characterized in that: the door pushing device comprises a driving device for realizing door pushing action and an intelligent assembly with control and alarm functions, wherein the driving device comprises a driving motor (12), a main driving shaft (13) connected with an output shaft of the driving motor (12) and a gear (3) connected with the main driving shaft (13), a rack (4) arranged in a sliding groove (14) on a bottom plate (6) in a sliding mode is meshed below the gear (3), clamping blocks (1) are arranged below the rack (4) and on one side of the bottom plate (6), and a spring (2) is arranged between the two clamping blocks (1);

the intelligent assembly comprises a PLC (programmable logic controller) 16, a force sensor 11, a carbon monoxide sensor 17 and an alarm 15, the PLC 16 is installed on the bottom plate 6, and the force sensor 11 is installed in the sliding groove 14 corresponding to the tail of the rack 4 in the reset state of the rack 4.

2. The automatic door opener according to claim 1, wherein the automatic door opener discharges carbon monoxide gas based on a PLC controller, and comprises: still be provided with motor base (5), shaft coupling (7), bearing frame (10), axle sleeve (9) on bottom plate (6), driving motor (12) are located on motor base (5), be connected with shaft coupling (7) between the pivot of driving motor (12) and main drive axle (13), axle sleeve (9) install in on main drive axle (13), main drive axle (13) and gear (3) pass through the key-type connection, bearing frame (10) suit in on main drive axle (13), and bearing frame (10) are located the both ends of gear (3).

3. The automatic door opener according to claim 1, wherein the automatic door opener discharges carbon monoxide gas based on a PLC controller, and comprises: the intelligent assembly further comprises a control button (18) and an emergency stop button (8), and the carbon monoxide sensor (17), the control button (18), the emergency stop button (8) and the alarm (15) can be installed at any indoor position.

4. The automatic door opener according to claim 3, wherein the automatic door opener discharges CO gas based on a PLC controller, and comprises: the driving motor (12) and the alarm (15) are electrically connected with the output end of the PLC (16), and the control button (18), the emergency stop button (8), the force sensor (11) and the carbon monoxide sensor (17) are electrically connected with the input end of the PLC (16).

5. The automatic door opener according to claim 1, wherein the automatic door opener discharges carbon monoxide gas based on a PLC controller, and comprises: when the spring (2) is in the original length, the rack (4) is just completely positioned in the bottom plate (6).

6. The automatic door opener according to claim 1, wherein the automatic door opener discharges carbon monoxide gas based on a PLC controller, and comprises: the gear (3) is a half-tooth gear.