CN207067752U - Power station auxiliary fortune check system based on card computer - Google Patents

Abstract

The utility model relates to the field of real-time monitoring of field equipment status, that is, a power station auxiliary inspection system based on a card type computer. It includes a raspberry pie, a camera connected to the raspberry pie, the camera is used for image acquisition, a non-contact infrared temperature measurement module connected to the raspberry pie, used to monitor the temperature of the field equipment, each raspberry pie is connected to a WiFi or network cable Connect to the Ethernet switch as a medium and display it on the WEB browser of the computer or mobile phone; install the Raspberry Pi, the camera, the non-contact infrared temperature measurement module, and the large-capacity lithium battery in an acrylic case, and each side of the outer surface of the case A NdFeB permanent magnet is fixed for convenient adsorption on the surface of metal equipment near the monitored point. It can conveniently establish a new contact method between the person in charge of commissioning and different locations and different devices, so that the person in charge can grasp the perception results such as images, sounds, and temperatures that can only be obtained at the actual site in real time.

Description

Power Station Auxiliary Inspection System Based on Card Computer

technical field

The utility model relates to the field of real-time monitoring of field equipment status, that is, a power station auxiliary inspection system based on a card type computer.

Background technique

In the existing technology, the pumped storage business has developed vigorously in recent years, and the operation mode of most pumped storage power plants is positioned as "no one on duty, few people on duty". Therefore, each pumped storage power station will not be equipped with many production personnel. During the operation, maintenance and commissioning of the unit, it is necessary to manually track the operation status of the equipment to ensure the stability of the operation. This puts forward higher requirements on the quality of personnel and equipment reliability, and also increases the difficulty of unified monitoring and command of the staff.

Taking the unit commissioning work after the B-level maintenance of a pumped storage power station as an example, it is necessary to arrange personnel to monitor the status of the equipment in the on-site LCU of the generator layer, the machine control cabinet of the turbine layer, and the ball valve of the volute layer. The current communication method is to use the telephone or walkie-talkie in the factory, and the on-site personnel need to report the current equipment status to the person in charge as required. As a result, the status of equipment can only be described in language, and the person in charge cannot vividly grasp the current real status of each equipment in real time, and the way of language description is very likely to cause understanding deviations, resulting in accidents.

Utility model content

The purpose of this utility model is to provide a card-type computer-based power station auxiliary inspection system for the above-mentioned deficiencies, which can conveniently establish a new contact mode between the person in charge of debugging and different locations and different equipment, so that the person in charge can Master the perception results such as images, sounds, and temperatures that can only be obtained at the actual site.

The technical solution of the utility model is: a power station auxiliary inspection system based on a card type computer, which is characterized in that it includes a raspberry pie, a camera connected with the raspberry pie, the camera is used for image collection, and a non-contact system connected with the raspberry pie Infrared temperature measurement module is used to monitor the temperature of on-site equipment. Each Raspberry Pi is connected to the Ethernet switch with WiFi or network cable as the medium, and displayed on the WEB browser of the computer or mobile phone; the Raspberry Pi, camera, non-contact The infrared temperature measurement module and large-capacity lithium battery are uniformly installed in the acrylic case, and a NdFeB permanent magnet is fixed on each side of the outer surface of the case, which is used to easily adsorb on the surface of the metal equipment near the monitored point.

In the above scheme:

The camera adopts the official camera of Raspberry Pi.

The non-contact infrared temperature measurement module adopts MLX90614.

The utility model has the advantages of: 1. Using Raspberry Pi combined with infrared temperature measurement, PHP, MySQL and other technologies to realize real-time monitoring of the device status on the WEB page. 2. It is convenient to establish a new contact method between the person in charge of commissioning and different locations and different devices, so that the person in charge can grasp the perception results such as images, sounds, and temperatures that can only be obtained at the actual site in real time.

Embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a block diagram of the utility model.

Detailed ways

See Figure 1, the names of the components are as follows: Raspberry Pi 1, camera 2, non-contact infrared temperature measurement module 3, and display 4.

See Figure 1, the power station auxiliary inspection system based on card computer, including Raspberry Pi 1, camera 2 connected with Raspberry Pi 1, camera 2 adopts the official camera of Raspberry Pi, and camera 2 is used for image acquisition, connected with tree The non-contact infrared temperature measurement module 3 connected to the Berry Pi 1 is used to monitor the temperature of field equipment. The non-contact infrared temperature measurement module 3 uses MLX90614. Each Raspberry Pi 1 is connected to the Ethernet switch with WiFi or network cable as the medium, and displayed on the WEB browser of the computer or mobile phone; the Raspberry Pi 1, camera 2, non-contact infrared temperature measurement module 3, large-capacity lithium The battery is uniformly installed in an acrylic case, and a NdFeB permanent magnet is fixed on each side of the outer surface of the case for convenient adsorption on the surface of metal equipment near the monitored point.

Raspberry Pi (Chinese name "Raspberry Pi") is a computer with the size of a business card. It has very rich interfaces such as CSI, HDMI, USB2.0, stereo audio, RJ45, MicroSD card socket, LCD interface, and GPIO. Strong scalability.

The camera 2 used for image acquisition can choose a USB interface or an official camera. The photosensitive chip of the official camera uses a 1/4-inch OV5647 chip produced by OmniVision, which can be directly connected to the CSI interface of the Raspberry Pi control board through a flexible cable. . It is equipped with a 5-megapixel image sensor that can record 1080p Full HD video at 30 frames per second, or capture 2592x1944 resolution pictures.

The existing temperature measurement technologies are mainly thermal resistance/couple, infrared temperature measurement, optical fiber temperature measurement and other technologies. Infrared temperature measurement is based on the infrared radiation energy of the measured object to determine the temperature of the object. It does not touch the measured object, but it can affect the temperature distribution field of the measured object. It has high temperature resolution, fast response speed and wide temperature measurement range. , good stability and other characteristics, the infrared temperature measurement method is selected as the temperature acquisition method.

The non-contact infrared temperature measurement module MLX90614 also integrates an infrared induction thermopile detector chip and a signal processing integrated chip. The module is suitable for a voltage of 5V, a current of 2mA, and an object temperature range of -70 to +380°C. It can use RS485 or TTL communication , able to communicate well with the Raspberry Pi. The four pins +5V, GND, TX, and RX of the temperature measurement module are respectively connected to the 04, 06, 08, and 10 pins of the Raspberry Pi GPIO.

The raspberry pie 1 is used as the bottom terminal to collect the information collected by the camera 2 and the non-contact infrared temperature measurement module 3, and each raspberry pie 1 is connected to the Ethernet switch with WiFi or network cable as the medium. When there are only a few monitoring points, you can use the built-in HTTP service in the Raspberry Pi 1 to directly display them on the WEB browser of a computer or even a mobile phone. If there are many parts that need to be monitored at the same time, considering the comparison of unified monitoring and the performance of the Raspberry Pi, it is recommended to establish a separate WEB server, and use the web language to actively read the data collected by the Raspberry Pi. The form is displayed according to the job requirements.

When in use, install the Raspberry Pi 1, camera 2, non-contact infrared temperature measurement module 3, and large-capacity lithium battery in an acrylic case and connect it to the Ethernet. Open the WEB browser and enter the URL of the corresponding Raspberry Pi. You can see the time and temperature information of the real-time image of the work site. A NdFeB permanent magnet is fixed on each side of the outer surface of the chassis for convenient adsorption on the surface of metal equipment near the monitored point. If there is no metal equipment nearby, it can be hung on a special temporary bracket. According to the test, a 10000mh lithium battery can work continuously for 11 hours, and generate a database file of about 1.5M, which can meet the power and storage space required for single-day debugging.

If you only need to monitor the opening process of the ball valve, you can open a browser on a mobile phone, tablet and other devices, and enter the URL of the Raspberry Pi to achieve convenient observation. But if there are multiple monitoring points at the same time, you can use PHP dynamic web page technology as needed to display multiple pages in turn. If there is a large screen condition, multiple screens can be displayed on one screen at the same time, which is more convenient for information comparison and monitoring between different units and switch blades.

The above description is only a specific implementation of the utility model, and various illustrations do not limit the essential content of the utility model.

Claims (3)

1. the power station auxiliary fortune check system based on card computer, it is characterised in that including Raspberry Pi（1）, with Raspberry Pi（1）Even The camera connect（2）, camera（2）For IMAQ, with Raspberry Pi（1）The Non-contact Infrared Temperature Measurement module of connection（3）, For monitoring field device temperature, each Raspberry Pi（1）Using WiFi or netting twine as medium access Ethernet switch, it is shown to In the web browser of computer or mobile phone；By Raspberry Pi（1）, camera（2）, Non-contact Infrared Temperature Measurement module（3）, Large Copacity Lithium battery is uniformly mounted in acrylic cabinet, and one piece of neodymium-iron-boron permanent magnet is fixed in each side in cabinet outer surface, for easily It is adsorbed on the hardware surface near monitored point.

2. according to the auxiliary fortune check system of the power station based on card computer described in claim 1, it is characterised in that camera（2） Using official's camera of Raspberry Pi.

3. according to the auxiliary fortune check system of the power station based on card computer described in claim 1 or 2, it is characterised in that non-contact Formula infrared measurement of temperature module（3）Using MLX90614.