CN213091128U - Novel non-tower interior operation object detection system of cooling tower - Google Patents

Abstract

The utility model discloses a novel non-interior operation thing detecting system of tower of cooling tower, including PC, STC89C51 singlechip, waterproof type camera, infrared correlation sensor, proximity switch. Through the concrete setting and mutually supporting of each part among this technical scheme, can realize the detection of operation thing in the cooling tower non-tower, reach the function that early warning and control fan opened and stop.

Description

Novel non-tower interior operation object detection system of cooling tower

Technical Field

The invention relates to the field of machine vision and sensor detection, in particular to a novel detection system for a non-tower operation object of a cooling tower.

Background

The circulating water cooling tower is important equipment in various industries such as petrifaction, power plants, steel and the like, and is a comprehensive product integrating various subjects such as aerodynamics, thermodynamics, fluidics, chemistry, materials science, static structure mechanics, dynamic structure mechanics, processing technology and the like. The fan is arranged in the circulating water cooling tower, and has the function of enabling industrial hot circulating water sprayed in the cooling tower to be in direct contact with cold air through air flow generated by rotation of the blades, and dissipating heat carried by the hot circulating water into the air through air cooling so as to achieve the purposes of forced cooling of hot water and industrial recycling.

The cooling tower needs to be periodically maintained and checked for faults, and the operation in the tower has the characteristics of narrow operation space, high operation risk and the like. At present, the start and stop of a fan in a tower need manual operation, when the fan does not stop running, personnel enter and enter the tower by mistake or operating tools left over in the tower exist and the fan is started by mistake during the operation of the personnel, and dangerous accidents are easy to happen. At present, the number of monitoring systems in the field is very small, the states of operators are only detected, operation tools in a tower cannot be identified, and the function of counting the operators in the tower cannot be realized. This system is when detecting personnel's state, newly-increased detection operation instrument function, and realizes business turn over tower personnel count function through monitoring system. Compared with the existing related system, the system has the advantages of being more stable, efficient, safe and irreplaceable.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem that exists among the prior art, now provide a non-tower interior operation thing detecting system of novel cooling tower based on machine vision technique and sensor detection technique, whether have in the testing tower to remain the operation instrument, carry out real time monitoring and count to personnel in the tower, have in the tower to remain the operation instrument, have personnel and personnel figure to feed back to the corresponding real-time signal of control system, thereby carry out opening of early warning and fan and stop, concrete technical scheme is as follows:

the utility model provides a novel non-interior operation thing detecting system of cooling tower, is applied to cooling tower, specifically includes:

the PC is used for displaying an interface of the novel cooling tower non-tower operation object detection system, the system interface comprises a monitoring interface, a tower personnel number display interface, a system start key, a system zero setting key and an early warning lamp. And transmits corresponding signals to the singlechip.

STC89C51 singlechip, STC89C51 singlechip are connected infrared correlation sensor, proximity switch, fan, PC, receive infrared correlation sensor, proximity switch, PC end signal, control fan and open and stop.

Waterproof type camera, waterproof type camera and outside PC link to each other, and waterproof type camera is used for keeping watch on near scene of fan in the cooling tower, and near having or not non-tower interior operation thing of monitoring fan, operation thing includes in the non-tower: an operator, a work kit, a ladder, a rope, etc.

And the infrared correlation sensor is connected with the single chip microcomputer and is used for counting the number of operating personnel entering and exiting the cooling tower.

And the proximity switch is connected with the STC89C51 single chip microcomputer and is used for detecting the opening and closing state of the inlet door of the cooling tower.

The technical scheme has the advantages and positive effects that: and the camera is combined with a machine vision algorithm to monitor whether the operation objects in the tower are in the tower or not in real time. Through the combination of the sensor and the single chip microcomputer control technology, people in the tower can be counted in real time. Therefore, the functions of starting and stopping control and early warning of the fan are achieved. The device has the advantages of high reliability, high safety coefficient, strong fault tolerance and the like by utilizing two detection modes to accurately detect whether a person is in the tower or not and visually detect whether a non-tower operation object is in the tower or not. The system can replace manual monitoring and operation personnel to go up the tower to start and stop the fan, and realizes safety control and remote control. Greatly saves manpower and material resources, improves the production efficiency and the operation safety, and has good popularization and application prospects.

Drawings

Fig. 1 is a schematic view of the installation position of the device of the present invention.

Fig. 2 is an interface diagram of the PC system of the present invention.

Fig. 3 is a schematic diagram of the present invention.

Reference numerals: 1-a waterproof camera a; 2-waterproof camera B; 3-waterproof camera C; 4-infrared correlation sensor A; 5-infrared correlation sensor B; 6-proximity switch; 7-monitoring interface; 8-a display interface for the number of personnel in the tower; 9-an early warning lamp; 10-system zero button; 11 system start button

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings. Numerous technical details are set forth in this application in order to provide a better understanding of the reader, and the teachings of the present invention are not limited to the scope of this patent, as examples not set forth in this patent and other examples that may be modified or changed in nature are intended to be within the scope of this patent.

A novel detection system for non-tower internal operation objects of a cooling tower is applied to the cooling tower, and the system adopts a waterproof camera and a machine vision algorithm to be combined to monitor whether the non-tower internal operation objects exist near a fan in the tower in real time (the non-tower internal operation objects comprise an operator, an operation tool box, a ladder, a rope and the like); through infrared correlation sensor and control technique combination, carry out real-time count to the personnel in the tower of cominging in and going out. The functions of fan start-stop control and early warning are achieved. As shown in fig. 1, 2, and 3, the system for detecting a non-tower inside work in a cooling tower specifically includes:

and the PC is used for displaying an interface of the cooling tower non-tower operation object detection system, displaying a camera monitoring interface and transmitting corresponding signals to the single chip microcomputer.

STC89C51 singlechip, STC89C51 singlechip connect sensor, proximity switch, fan for receive PC, sensor, proximity switch signal, control fan start-stop.

The waterproof camera (1), (2), (3), waterproof type camera links to each other with the PC, waterproof type camera is used for keeping watch on near fan scene in the cooling tower, and it has not tower interior operation thing to monitor near the fan.

And the infrared correlation sensors (4) and (5) are connected with the single chip microcomputer and are used for counting the number of operating personnel entering and exiting the cooling tower.

And the proximity switch (6) is connected with the single chip microcomputer and is used for detecting the opening and closing state of the inlet door of the cooling tower.

Specifically, the number of waterproof cameras in the novel detection system for the operating objects in the cooling tower is 3, the waterproof cameras (1), the waterproof cameras (2) and the waterproof cameras (3) are respectively arranged on the inner wall of the cooling tower at intervals of 120 degrees, the installation height of the waterproof cameras is lower than that of blades in the cooling tower by 0.15m, and the purpose is to prevent the blades of a fan from appearing in a monitoring picture of the system and interfering with the detection of the operating tools for personnel near the fan. The system comprises a waterproof camera (1), a waterproof camera (2) and a waterproof camera (3), wherein the waterproof camera (3) is respectively connected with a PC (personal computer), the PC performs defogging pretreatment on the position near a fan in the tower by combining the waterproof camera with a machine vision algorithm, and detects whether non-tower operation objects exist near the fan, when the non-tower operation objects are detected, the PC sends a high-frequency signal to an STC89C51 single chip microcomputer, and the STC89C51 single chip microcomputer prohibits the fan from running.

The infrared correlation sensor quantity in the system is 2, infrared correlation sensor (4), the transmitting terminal of infrared correlation sensor (5), the receiving terminal is settled respectively on cooling tower inlet channel both sides guardrail, 0.3m apart from between two infrared correlation sensors, apart from the nearly person of entrance door and door 1.5m apart from in the sensor, when staff passes in and out the cooling tower through the passageway, 2 infrared correlation sensors are passed through to the order, according to the difference of 2 infrared correlation sensor received signal order, realize the discernment of staff business turn over state and business turn over personnel's count.

The number of the proximity switches (6) in the system is 1, the proximity switches are arranged on an inlet door of the cooling tower, when the door is opened, high-frequency signals are sent to an STC89C51 single chip microcomputer, and the single chip microcomputer controls the early warning signal lamps to be normally on, so that the early warning function of the fan is realized. When the door is closed, a low-frequency signal is sent to the STC89C51 single chip microcomputer, and the single chip microcomputer controls the early warning signal lamp to be normally off.

The PC in the system is a computer, the interface of the novel cooling tower non-tower operation object detection system is a qt interface, a waterproof camera monitoring picture is displayed in the interface, the sensor personnel count is provided with a start button and a zero setting button, the start button is pressed to indicate that the whole system is started, and the zero setting button has the same effect as the reset.

The utility model discloses mainly adopt C + + to programme, get up equipment drives such as infrared correlation sensor, proximity switch, compile and connect and generate one later HEX file, download and operate on STC89C51 singlechip development board. Meanwhile, the STC89C51 single chip microcomputer is connected with a PC end and used for receiving signals fed back by the vision system so as to control the starting and stopping of the fan, and the PC is used for displaying a system interface of the whole system. In order to better highlight the features of the patent, some elements of the system are not described too much, which does not represent the absence of these elements.

Claims (5)

1. The utility model provides a novel work thing detecting system in non-tower of cooling tower, is applied to cooling tower, its characterized in that, work thing detecting system specifically includes in the non-tower of cooling tower:

the PC is used for displaying an interface of the novel cooling tower non-tower operation object detection system, displaying a camera monitoring interface and displaying the number of personnel in the tower; the PC is used for receiving and sending signals to the STC89C51 singlechip;

the STC89C51 single-chip microcomputer is connected with the PC, the infrared correlation sensor, the proximity switch and the fan and used for receiving signals of the PC, the infrared correlation sensor and the proximity switch and controlling the start and stop of the fan;

the waterproof camera is connected with the PC and used for monitoring scenes near a fan in the cooling tower and monitoring whether non-tower operation objects exist near the fan;

the infrared correlation sensor is connected to the single chip microcomputer and used for counting the number of operating personnel entering and exiting the cooling tower;

and the proximity switch is connected with the STC89C51 single chip microcomputer and is used for detecting the opening and closing state of the inlet door of the cooling tower.

2. The system for detecting the non-tower interior work objects in the novel cooling tower as claimed in claim 1, wherein the number of the waterproof cameras is 3, the waterproof cameras are respectively arranged at the inner wall of the cooling tower at intervals of 120 degrees, and the installation height of the waterproof cameras is 0.15m lower than the installation height of blades in the cooling tower.

3. The system for detecting the non-tower inner workings of the novel cooling tower according to claim 1, wherein the number of the infrared correlation sensors is 2, the transmitting end and the receiving end of each infrared correlation sensor are respectively arranged on the guardrails on two sides of the inlet channel of the cooling tower, the distance between the two infrared correlation sensors is 0.3m, and the distance between the sensor and the door close to the inlet door is 1.5 m.

4. The system for detecting the non-tower inside work object of the cooling tower as claimed in claim 1, wherein the number of the proximity switches is 1, and the proximity switches are arranged on the inlet door of the cooling tower.

5. The system for detecting the working substances in the novel cooling tower is characterized in that the PC is used for displaying an interface of the system for detecting the working substances in the novel cooling tower, wherein the interface of the system comprises a monitoring interface, an interface for displaying the number of personnel in the tower, a system start key, a system zero key and an early warning lamp; the PC is used for transmitting corresponding signals to the STC89C51 singlechip.

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