Monitoring system for low-temperature and high-pressure rocket propellant storage tank

Abstract

The utility model discloses a monitoring system for a low-temperature and high-pressure rocket propellant storage tank, belongs to the technical field of image information transmission, and solves the technical problems of low monitoring transmission rate and error codes of the rocket propellant storage tank. The system comprises a camera device, an image controller, a power supply, a network port switching server, a front-end photoelectric converter, a rear-end photoelectric converter, an image monitoring upper computer and a power supply control upper computer, and the power supply control upper computer is sequentially communicated with the rear-end photoelectric converter, the front-end photoelectric converter, the network port switching server and the power supply. The power supply control upper computer is used for controlling on and off of a power supply. The camera device is located at the top in the storage box and sequentially communicated with the image controller, the front-end photoelectric converter, the rear-end photoelectric converter and the image monitoring upper computer, and the image monitoring upper computer is used for displaying images and environment temperature information. And the front-end photoelectric converter is communicated with the rear-end photoelectric converter through an optical fiber. The device is used for monitoring the low-temperature and high-pressure rocket propellant storage tank.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the image information transmission technical field, concretely relates to a monitoring system for low temperature high pressure rocket propellant storage tank. BACKGROUND

[0002] The temperature environment inside the low temperature high pressure rocket propellant storage tank is extremely harsh, the image measuring equipment is completely soaked in the propellant, the temperature under this environment is extremely low, reaches minus 180 degrees, in the process of filling the propellant, the pressure in the tank also has obvious increase, the low temperature high pressure environment is harmful to the human body greatly, even if the staff is in and out quickly, also difficult to ensure that the self is not damaged. Meanwhile, when the rocket is ignited, need to observe outside the distance enough safe, for personnel safety, the monitoring of propellant working condition and the change of tank structure during the propellant filling and releasing process is very important. Therefore, during the propellant filling and releasing process in the storage tank, real-time remote monitoring of propellant working condition and the change of tank structure is required, and personnel remote control of the start and shutdown of the camera device is required. This requires that the camera device can not only cope with the extreme temperature environment, but also can transmit the image and environmental temperature in the storage tank to the remote monitoring station in real time.

[0003] When using network cable to transmit image information remotely, the image information signal gradually weakens, resulting in reduced image information data transmission rate and increased error rate. In addition, electromagnetic interference is also affected in the test site, especially in the rocket propellant storage tank, the electromagnetic interference is more serious. In addition, when using network cable for remote transmission, there is the problem of unstable data transmission, especially when the network is busy or a large amount of data is transmitted, this phenomenon will be more obvious. Therefore, in engineering practice, the use of network cable cannot meet the requirements of remote transmission of image information. UTILITY MODEL CONTENTS

[0004] In order to overcome the low temperature high pressure rocket propellant storage tank monitoring data transmission rate and the insufficient increase of error rate, the utility model provides a kind of monitoring system for low temperature high pressure rocket propellant storage tank.

[0005] The utility model solves the technical scheme that the technical scheme that the utility model solves its technical problem is as follows:

[0006] A kind of monitoring system for low temperature high pressure rocket propellant storage tank, including camera device, image controller, power supply, network port server, front end photoelectric converter, rear end photoelectric converter, image monitoring host computer, power control host computer.

[0007] The camera device, image controller, power supply, network port server, front end photoelectric converter are located at the front end, and the rear end photoelectric converter, image monitoring host computer, power control host computer are located at the rear end.

[0008] The power supply control host computer is in sequence communication with the rear-end photoelectric converter, the front-end photoelectric converter, the network conversion server and the power supply.

[0009] The camera is located at the top of the storage tank and is in sequence communication with the image controller, the front-end photoelectric converter, the rear-end photoelectric converter and the image monitoring host computer.

[0010] The front-end photoelectric converter and the rear-end photoelectric converter are in communication through an optical fiber, the front-end photoelectric converter and the image controller are in communication through a network cable, and the network conversion server and the power supply are in communication through a serial port cable.

[0011] The monitoring system has a portable power supply.

[0012] The monitoring system has an RS232 network conversion server.

[0013] The optical fiber has a working wavelength of 1310nm, an SMF attenuation coefficient of 0.2dB / km, an effective refractive index of 1.45-1.48 and a transmission rate of 1Gbps.

[0014] The optical fiber has a length of 15km.

[0015] The front-end photoelectric converter has a working wavelength of 1310nm, an output power of 5dBm, a working temperature range of -40℃-85℃ and a maximum support rate of 1Gbps, and the rear-end photoelectric converter has the same parameters as the front-end photoelectric converter.

[0016] The camera is a high-speed camera.

[0017] The monitoring system has the advantages that:

[0018] The monitoring system for the low-temperature high-pressure rocket propellant storage tank adopts a high-speed camera and a photoelectric converter, uses a combination of an optical fiber and a network cable to transmit image and temperature data at a long distance. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a monitoring system structure schematic diagram of the embodiment one of the utility model.

[0020] The sign: 1. camera device, 2. image controller, 3. power supply, 4. RS232 network interface server, 5. front end photoelectric converter, 6. rear end photoelectric converter, 7. image monitoring host computer, 8. power control host computer, 9. storage tank, 10. network cable, 11. optical fiber, 12. serial line. DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail in combination with the drawings and specific embodiment.

[0022] Embodiment one

[0023] A kind of for low temperature high pressure rocket propellant storage tank monitoring system, as shown in Figure 1 It includes camera device 1, image controller 2, portable power supply 3, RS232 network interface server 4, front end photoelectric converter 5, rear end photoelectric converter 6, image monitoring host computer 7, power control host computer 8.

[0024] The camera device 1, image controller 2, power supply 3, network interface server 4, front end photoelectric converter 5 are front end part, located in front end, and the distance rocket propellant storage tank is close;The rear end photoelectric converter 6, image monitoring host computer 7, power control host computer 8 are rear end part, located in rear end, and the distance rocket propellant storage tank is far.

[0025] Storage tank 9 stores low temperature high pressure rocket propellant, camera device 1 is located in the top of storage tank 9, is used to gather the image and environmental temperature information of rocket propellant in storage tank 9, and camera device 1 sends the image and environmental temperature information gathered with LVDS signal mode to image controller 2.

[0026] Image controller 2 is used to integrate image and environmental temperature information, and sends out electric signal after compression, integration, encoding processing;

[0027] Portable power supply 3 is used to ensure the power supply of camera device 1 and image controller 2;

[0028] RS232 network interface server 4 is used to convert control signal and control power supply 3 output;

[0029] Front end photoelectric converter 5 is used to convert electric signal into optical signal, and optical signal into electric signal;

[0030] Rear end photoelectric converter 6 is used to convert optical signal into electric signal, and electric signal into optical signal;

[0031] The image monitoring host computer 7 is used for receiving the propellant images in the tank and the environmental temperature information collected by the camera 11, decompressing and decoding the images and the temperature information in the back end, and displaying the images and the temperature information.

[0032] The power control host computer 8 is located in the back end and is used for controlling the start and stop of the camera 1 and the image controller 2.

[0033] The monitoring system for the low-temperature and high-pressure rocket propellant tank is specifically implemented in the following method:

[0034] The power control host computer 8 sends a start power signal instruction, the back end photoelectric converter 6 converts the electrical signal into an optical signal, the optical signal is transmitted to the front end photoelectric converter 5 through an optical fiber, the front end photoelectric converter 5 converts the optical signal into an electrical signal, the electrical signal is transmitted to the RS232 network port server 4 through a network cable, and the portable power supply 3 is started through a serial port line, and the power supply 3 supplies power to the image controller 2 and the camera 1.

[0035] After the image controller 2 and the camera 1 are powered, the camera 1 collects the propellant images in the tank and the environmental temperature information and sends the images and the temperature information to the image controller 2. The image controller 2 compresses, integrates and encodes the images and the temperature information, sends an electrical signal, and transmits the electrical signal to the front end photoelectric converter 5 through a network cable. The front end photoelectric converter 5 converts the electrical signal into an optical signal, and the optical signal is transmitted to the back end photoelectric converter 6 through an optical fiber. The back end photoelectric converter 6 converts the optical signal into an electrical signal, and the electrical signal is sent to the image monitoring host computer 7 through a network cable. The image monitoring host computer decompresses and decodes the images and the temperature information.

[0036] The camera 1 is a high-speed camera.

[0037] The parameters of the front end photoelectric converter 5 and the back end photoelectric converter 6 are as follows: the working wavelength is 1310 nm, the output power is 5 dBm, the EMI / RFI anti-interference design is provided, the working temperature range is-40℃ to 85℃, and the maximum support rate is 1 Gbps.

[0038] The parameters of the optical fiber 11 are as follows: the working wavelength is 1310 nm, the SMF attenuation coefficient is 0.2 dB / km, the effective refractive index is 1.45-1.48, and the transmission rate is 1 Gbps.

[0039] The monitoring system for the low-temperature and high-pressure rocket propellant tank has been verified under the conditions of long-time and multiple experiments and a transmission distance of 15 kilometers. The system has great advantages in transmission distance and can guarantee the accuracy and stability of data transmission. The system solves the problems of signal attenuation, anti-interference ability, lock loss and error code, realizes the start and stop of the camera at a long distance, and realizes the reliable transmission of high-definition real-time images without error code.

Claims

1. A monitoring system for cryogenic high pressure rocket propellant tanks, characterized in that, The camera (1), image controller (2), power supply (3), network port server (4), front-end photoelectric converter (5), rear-end photoelectric converter (6), image monitoring host computer (7), power supply control host computer (8) are included. The camera (1), image controller (2), power supply (3), network port server (4), front-end photoelectric converter (5) are located in the front end, and the rear-end photoelectric converter (6), image monitoring host computer (7), power supply control host computer (8) are located in the rear end. The power supply control host computer (8) is in communication with the rear-end photoelectric converter (6), front-end photoelectric converter (5), network port server (4) and power supply (3) in sequence, and the power supply control host computer (8) is used for controlling the start and stop of the power supply (3), and the power supply (3) is used for power supply of the image controller (2) and camera (1). The camera (1) is located at the top of the storage box (9) and is in communication with the image controller (2), front-end photoelectric converter (5), rear-end photoelectric converter (6) and image monitoring host computer (7) in sequence; the image monitoring host computer (7) is used for decompressing and decoding the propellant image and environmental temperature information collected by the camera (1) in the storage box, and displaying the image and environmental temperature information. The front-end photoelectric converter (5) and rear-end photoelectric converter (6) are in communication through an optical fiber (11), the front-end photoelectric converter (5) and image controller (2) are in communication through a network cable (10), and the network port server (4) and power supply (3) are in communication through a serial port cable (12).

2. The monitoring system of claim 1, wherein, The power supply (3) is a portable power supply.

3. The monitoring system of claim 1, wherein, The network port server (4) is an RS232 network port server.

4. The monitoring system of claim 1, wherein, The working wavelength of the optical fiber (11) is 1310nm, the SMF attenuation coefficient is 0.2dB / km, the effective refractive index is 1.45-1.48, and the transmission rate is 1Gbps.

5. The monitoring system of claim 1, wherein, The length of the optical fiber (11) is 15km.

6. The monitoring system of claim 1, wherein, The parameters of the front-end photoelectric converter (5) are as follows: working wavelength 1310nm, output power 5dBm, working temperature range-40℃-85℃, and maximum support rate 1Gbps. The rear-end photoelectric converter (6) has the same parameters as the front-end photoelectric converter (5).

7. The monitoring system of claim 1, wherein, The camera (1) is a high-speed camera.

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