CN110712725A

CN110712725A - Floating platform watertight compartment formula flotation tank based on internet

Info

Publication number: CN110712725A
Application number: CN201911002228.3A
Authority: CN
Inventors: 江泓泉; 张大刚
Original assignee: QINGDAO DMAR MARINE ENGINEERING Co Ltd
Current assignee: QINGDAO DMAR MARINE ENGINEERING Co Ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-01-21

Abstract

The utility model provides a floating platform watertight compartment formula flotation tank based on internet, includes flotation tank main part and connecting device, connecting device is used for being connected floating platform and flotation tank main part, its characterized in that, flotation tank main part includes and is connected through plug connector or articulated elements by girder and skeleton and forms the bearing structure of M N mounting that is arranged in the form of matrix, M N mounting is used for fixing M N ballast device respectively, M and N are the integer that is greater than 1, and ballast device's weight can change. The buoyancy tank of the floating platform provided by the invention is convenient to sink and withdraw, and does not pollute the water area.

Description

Floating platform watertight compartment formula flotation tank based on internet

Technical Field

The invention belongs to the technical field of deepwater ocean oil and gas development, and particularly relates to an internet-based floating platform watertight compartment type buoyancy tank convenient to sink and withdraw and a control system thereof.

Background

The ocean oil and gas development in China has more than 40 years of history, and the ocean oil and gas development gradually progresses from an offshore shallow water area to a water depth increasing area to the current open sea deep water area; such that prior conventional jackets and gravity platforms have been economically unsuitable for new area development. Internationally, the floating platform suitable for deep water oil and gas development has the multiple, mainly includes floating platform, for with floating platform in the location aquatic, sets up the flotation tank in the floating platform lower part, the flotation tank of the floating platform that provides among the prior art includes flotation tank main part and connecting device, connecting device is used for being connected floating platform and flotation tank main part, and connecting device is including setting up at a plurality of connecting pieces along flotation tank main part circumference or flotation tank main part inside, setting at the connecting piece of floating platform lower part or lateral part and the connection structure who is used for connecting piece and connecting piece. The buoyancy tank provided in the prior art is generally disposable, and the buoyancy tank is only required to be placed in water and discarded after the operation is finished, so that the buoyancy tank is permanently retained in the water, resources are wasted, and the water area is polluted.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide the floating platform watertight cabin type buoyancy tank based on the internet, and the buoyancy tank is convenient to sink and withdraw.

In order to achieve the purpose, the invention provides a floating platform watertight compartment type buoyancy tank, which comprises a buoyancy tank main body and a connecting device, wherein the connecting device is used for connecting a floating platform with the buoyancy tank main body, and the buoyancy tank main body is characterized in that the buoyancy tank main body comprises a support structure formed by connecting girders and a framework through plug connectors or hinged pieces and forming M & ltN & gt fixing pieces which are arranged in a matrix shape, the M & ltN & gt fixing pieces are respectively used for fixing M & ltN & gt ballast devices, M and N are integers more than 1, and the weight of the ballast devices can be changed.

Preferably, the ballast device is a watertight compartment, a piston is arranged in each watertight compartment to divide the watertight compartment into an air chamber and a water chamber, the air chamber is connected to the air pump through an electric control valve, the water chamber is provided with a water inlet valve and a water discharge valve respectively, when the watertight compartment is filled with water, the air pump pumps air in the air chamber to enable the piston to move upwards, water outside the watertight compartment is injected into the water chamber through the water inlet valve, when the watertight compartment is drained with water, the air pump injects air into the air chamber to enable the piston to move downwards, water in the watertight compartment is discharged out of the water chamber through the water discharge valve, and the on-off of the electric control valve.

Preferably, the floating platform watertight cabin type buoyancy tank further comprises a control system, wherein the control system comprises an attitude sensor, a depth sensor, a processor, a row selector, a column selector, N column selection lines, M row selection lines, M × N watertight cabin switches and a first power supply, the attitude sensor is used for measuring rotation angles of the buoyancy tank around an X axis, a Y axis and a Z axis of a reference coordinate system respectively and providing angle information to the processor; the depth sensor is used for measuring the depth of the buoyancy tank structure sinking to the water surface and providing depth information to the processor; the processor provides control signals to the row selector and the column selector according to the information provided by the attitude sensor and the information provided by the depth sensor to control the on-off and the on-off time of some or all of the M x N watertight compartment switches so as to enable some watertight compartments or all watertight compartments in the M x N watertight compartments to be filled with water or drained of water.

Preferably, each watertight compartment switch comprises a first electrical switch, a second electrical switch and a relay, a control terminal of the first electrical switch is connected to one row selection line, a first terminal is connected to one column selection line, a second terminal is connected to a control terminal of the second electrical switch, a first terminal of the second electrical switch is connected to a first power line of a second power source, a second terminal is connected to a second power line connected to the second power source through a line package of the relay, the second power line is a power line for providing a positive power source for the pixel switch, and a normally open switch of the relay is connected in series to a power supply circuit of the electrical control valve connected to the second power source.

Preferably, the control system includes at least a radio frequency circuit including at least a high frequency power amplifier 204 and a power supply circuit 203 supplying power to the high frequency power amplifier, the power supply circuit 203 including a linear amplifier 206, a current detector 207, a current output unit 208, a low pass filter 209, a synthesizer 210, and a power supply terminal 211, the linear amplifier 206 amplifying an input signal input from the modulation signal input terminal 202 and outputting to the synthesizer 210; the current detector 207 detects the current value of the output signal output from the linear amplifier 206 to the synthesizer 210, and outputs the signal of the detection result to the current output unit 208; the current detector 207 directly outputs the output signal output from the linear amplifier 206 to the synthesizer 210; a current output unit 208 outputs a current based on the current value detected by the current detector 207; low-pass filter 109 attenuates and outputs the high-frequency component of the output signal of current output section 108; the synthesizer 210 outputs the power synthesized by the output of the linear amplifier 206 and the output of the low-pass filter 209 to the power supply terminal 211.

Preferably, the current output unit 208 includes a first comparator 212, a second comparator 213, an inverter 214, a first switching amplifier 215, a second switching amplifier 216, and a DC power supply 217; the low-pass filter unit 209 includes a first low-pass filter 222 and a second low-pass filter 223, and the current detector 207 detects the current value of the output signal output from the linear amplifier 206 to the synthesizer 210 and outputs a signal having a voltage corresponding to the detection result to the current output section 208; the first comparator 212 performs high/low level determination based on a set threshold value on the input output signal from the current detector 207 and outputs the determination result to the first switching amplifier 215, and the second comparator 213 performs high/low level determination based on a predetermined threshold value on the input output signal from the current detector 207 and outputs the determination result to the second switching amplifier 216 via the inverter 214; the first switching amplifier 215 is input with an output from the first comparator 212; the first switching amplifier 215 outputs the signal whose input is amplified to the low-pass filter 209; in the second switching amplifier 216, the output from the second comparator 213 is inverted by the inverter 214 and then input; the second switching amplifier 216 amplifies the signal inputted thereto and outputs the amplified signal to the low-pass filter 209.

Compared with the prior art, the buoyancy tank structure of the floating platform provided by the invention has the following beneficial effects: is convenient to put down and withdraw, and does not pollute the water area.

Drawings

FIG. 1 is a schematic view of a watertight cabin-type buoyancy tank provided by the present invention;

fig. 2 is a circuit diagram of a control system for the pontoons of the vessel of the present invention;

FIG. 3 is a block diagram of the RF circuit in the control system provided by the present invention;

fig. 4 is a circuit diagram of a power amplifier provided by the present invention;

fig. 5 is a circuit diagram of the current output unit 208 and the low-pass filter 209 provided in the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The floating platform watertight compartment type buoyancy tank provided by the invention comprises a buoyancy tank main body and a connecting device, wherein the connecting device is used for connecting the floating platform with the buoyancy tank main body, the buoyancy tank main body comprises a supporting structure which is formed by connecting a girder and a framework through a connector clip or a hinge piece and is used for fixing a fixing piece of a ballast device, the ballast device can be a solid weight block, and the weight of the solid weight block is required to be placed according to the set gravity center control of the floating platform. The ballast device may also be a watertight chamber, and the structure of the buoyancy tank when the ballast device is a watertight chamber will be described in detail below with reference to fig. 1.

Fig. 1 is a schematic view of a watertight compartment-type buoyancy tank structure provided by the present invention, and as shown in fig. 1, a buoyancy tank main body of the watertight compartment-type buoyancy tank structure includes a support structure formed by connecting girders and a framework by connectors or hinges to form M × N fixing members arranged in a matrix, the M × N fixing members are respectively used for fixing M × N ballast devices, M and N are integers greater than 1, and the weight of the ballast devices can be changed. According to one embodiment of the invention, the M x N ballast means form a matrix of M rows and N columns. When the ballast device is a watertight compartment, a piston is arranged in each watertight compartment to divide the watertight compartment into an air chamber and a water chamber, the air chamber is connected to the air pump 105 through an electric control valve, the water chamber is respectively provided with a water inlet valve and a water discharge valve, when the watertight compartment is filled with water, the air pump 105 works under the control of a control system, air in the air chamber is pumped out to enable the piston to move upwards, and water outside the watertight compartment is injected into the water chamber through the water inlet valve; when water is drained from the watertight cabin, the air pump injects air into the air chamber to enable the piston to move downwards, water in the watertight cabin is drained out of the water chamber through the drain valve, and the on-off state of the electric control valve is controlled by the control system. In more detail, a piston is arranged in the watertight compartment W11 positioned in the row 1 and the column 1 to divide the watertight compartment into an air chamber and a water chamber, the air chamber is connected to the air pump 105 through an electric control valve V11, the water chamber is respectively provided with a water inlet valve and a water outlet valve, when water is filled into the watertight compartment W11, the air pump 105 works under the control of a control system to pump air in the air chamber to enable the piston to move upwards, and water outside the watertight compartment V11 is filled into the water chamber through the water inlet valve; when water is drained from the watertight chamber W11, the air pump injects air into the air chamber to enable the piston to move downwards, water in the watertight chamber W11 is drained out of the water chamber through the drain valve, the on-off state of the electric control valve V11 is controlled by the control system, specifically, the power supply 106 is used for supplying electric energy to the electric control valve V11, and the electric control switch K11 is connected in series in a power supply circuit of the power supply. A piston is arranged in a watertight cabin WN1 positioned in the row 1 and the column N to divide the watertight cabin into an air chamber and a water chamber, the air chamber is connected to an air pump 105 through an electric control valve VN1, the water chamber is respectively provided with a water inlet valve and a water discharge valve, when water is filled into the watertight cabin WN1, the air pump 105 works under the control of a control system, air in the air chamber is pumped out to enable the piston to move upwards, and water outside the watertight cabin WN1 is injected into the water chamber through the water inlet valve; when water is drained from the watertight cabin WN1, the air pump injects air into the air chamber to enable the piston to move downwards, water in the watertight cabin WN1 is drained out of the water chamber through the drain valve, the on-off state of the electric control valve VN1 is controlled by the control system, specifically, the power supply 106 is used for providing electric energy for the electric control valve V1N, and the electric control switch KN1 is connected in series into a power supply circuit of the electric control valve. A piston is arranged in the watertight cabin W1M positioned in the Mth row and the 1 st column to divide the watertight cabin into an air chamber and a water chamber, the air chamber is connected with the air pump 105 through an electric control valve V1M, the water chamber is respectively provided with a water inlet valve and a water outlet valve, when water is injected into the watertight cabin W1M, the air pump 105 works under the control of a control system, air in the air chamber is pumped out to enable the piston to move upwards, and water outside the watertight cabin W1M is injected into the water chamber through the water inlet valve; when water is drained from the watertight chamber W1M, the air pump injects air into the air chamber to move the piston downwards, water in the watertight chamber W1M is drained out of the water chamber through the drain valve, the on-off state of the electric control valve V1M is controlled by the control system, specifically, the power supply 106 is used for supplying electric energy to the electric control valve V1M, and the electric control switch K1M is connected in series in a power supply circuit of the power supply. By analogy, pistons are arranged in the watertight cabins WNM in the Mth row and the Nth column to divide the watertight cabins into air chambers and water chambers, the air chambers are connected to the air pump 105 through the electric control valve VNM, the water chambers are respectively provided with a water inlet valve and a water discharge valve, when the watertight cabins WNM are filled with water, the air pump 105 works under the control of the control system, air in the air chambers is pumped out to enable the pistons to move upwards, and water outside the watertight cabins WNM is injected into the water chambers through the water inlet valves; when water is drained from the watertight cabin WNM, the air pump injects air into the air chamber to enable the piston to move downwards, water in the watertight cabin WNM is drained out of the water chamber through the drain valve, the on-off state of the electric control valve V1M is controlled by the control system, specifically, the power supply 106 is used for providing electric energy for the electric control valve VNM, and the electric control switch KNM is connected in series into a power supply circuit of the electric control valve VNM.

The following describes in detail a control system of a buoyancy tank structure according to a preferred embodiment of the present invention with reference to fig. 2.

Fig. 2 is a circuit diagram of a control system of the pontoon structure of the floating platform according to the invention, as shown in fig. 2, wherein M × N watertight compartments on the pontoon structure 5 are arranged in a matrix and controlled by M × N watertight compartment switches, respectively, and specifically, the control system comprises an attitude sensor 101, a depth sensor 107, a processor 102, a row selector 103, a column selector 104, N column selection lines, M row selection lines, a first power supply, and M × N watertight compartment switches, wherein the attitude sensor 101 is configured to measure rotation angles of the pontoon structure about an X axis, a Y axis, and a Z axis of a reference coordinate system, respectively, and to provide angle information to the processor 102, the reference coordinate system being an origin point with a center of the pontoon structure as a coordinate, the X axis in a long direction when the pontoon structure is floating on a water surface, and the Y axis in a wide direction, the direction perpendicular to the X axis and the Y axis is the Z axis. The depth sensor 107 is used to measure the depth to which the pontoon structure sinks to the water surface and provides depth information to the processor 102. The processor 102 provides control signals to the row selector and the column selector according to the information provided by the attitude sensor 101 and the information provided by the depth sensor to select whether water enters some watertight compartments or all watertight compartments of the M x N watertight compartments or water drains, when water enters, air in the watertight compartments is pumped out through the air pump to enable the water to enter the watertight compartments through the water inlet valves, and when water drains, air is filled into the watertight compartments through the air pump to enable the water in the watertight compartments to drain out of the watertight compartments through the water drain valves. Preferably, each watertight compartment is provided with a one-way water inlet valve and a one-way water outlet valve at the bottom, and an electrically controlled valve V is arranged at the top of the watertight compartment, and each electrically controlled valve V is controlled by an electrically controlled switch K to connect the power supply 106. Each watertight compartment switch comprises a first electric switch and a second electric switch, wherein the control end of the first electric switch is connected to one row selection line, the first terminal of the first electric switch is connected to one column selection line, the second terminal of the first electric switch is connected to the control end of the second electric switch, the first terminal of the second electric switch is connected to the ground or common end of a power supply, and the second terminal of the second electric switch is connected to a power supply line of the power supply EC1 through a line packet of a relay J; and two ends of a coil of the relay J are connected with a diode in parallel, the positive end of the diode is connected with the second terminal of the second electric switch, and the negative end of the diode is connected with the common end of the power supply. The electrically controlled valve connected to the watertight compartment is connected to the power supply 107 via the normally open connection of the relay J. For example, the watertight compartment switch in the first row and the first column includes an electric switch T111 and an electric switch T112, a control terminal of the electric switch T111 is connected to the first row selection line P1, a first terminal of the electric switch T111 is connected to the first column selection line L1, a second terminal of the electric switch T111 is connected to a control terminal of the second electric switch T112, the first terminal of the electric switch T112 is connected to ground, and the second terminal of the electric switch T111 is connected to the power source EC1 via the wire package of the relay J11. The normally open switch K11 of the relay J11 is connected in series with the power supply circuit of the electric control valve V11 of the watertight compartment W11 in the first row and the first column, so that the water inlet and the water outlet of the watertight compartment W11 in the first row and the first column can be controlled.

The watertight compartment switch in the first row and the Nth column comprises an electric switch TN11 and an electric switch TN12, wherein a control end of the electric switch TN11 is connected to a first row selection line P1, a first terminal of the electric switch TN11 is connected to an Nth column selection line LN, a second terminal of the electric switch TN11 is connected to a control end of the electric switch TN12, a first terminal of the electric switch TN12 is connected to the ground, and a second terminal of the second electric switch TN11 is connected to a coil connected to the power supply EC1 through a relay JN 1. The normally open switch KN1 of the relay JN1 is connected in series with the power supply circuit of the electric control valve VN1 of the watertight compartment WN1 in the Nth column of the first row, so that the water inlet and the water outlet of the watertight compartment WN1 in the Nth column of the first row can be controlled.

The watertight compartment switch in the row M and column M includes an electric switch T1M1 and an electric switch T1M 2, the control terminal of the electric switch T1M1 is connected to the row M selection line PM, the first terminal of the electric switch T1M1 is connected to the column 1 selection line L1, the second terminal of the electric switch T1M1 is connected to the control terminal of the electric switch T1M 2, the first terminal of the electric switch T1M 2 is connected to ground, and the second terminal of the electric switch T1M1 is connected to the power source EC1 via the line packet of the relay J1M. The normally open switch K1M of the relay J1M is connected in series to the power supply circuit of the electric control valve V1M of the watertight compartment W1M in the No. 1 row of the M, so as to control the water inlet and the water outlet of the watertight compartment W1M in the No. 1 row of the M.

By analogy, the watertight compartment switch located in the mth row and the nth column includes an electric switch TNM1 and an electric switch TNM 2, a control terminal of the electric switch TNM1 is connected to the mth row selection line PM, a first terminal of the electric switch TNM1 is connected to the nth row selection line LN, a second terminal of the electric switch TNM1 is connected to a control terminal of the electric switch TNM 2, a first terminal of the electric switch TNM 2 is connected to the ground, and a second terminal of the electric switch TNM1 is connected to the power source EC1 via a coil of the relay JNM. Normally open and close KNM of the relay JNM are connected in series into a power supply circuit of an electric control valve VNM of a watertight cabin WNM located in the Mth row and the Nth column, so that water inlet and water discharge of the watertight cabin WNM located in the Mth row and the Nth column can be controlled.

According to an embodiment of the invention, the control system further comprises a memory 108 for storing a control program for controlling the switch in the electric control valve circuit of the watertight compartment and a program for controlling the operation of the air pump. According to one embodiment of the invention, the control system further comprises an air pump driver for controlling the air pump 105, the driver providing a control signal to the air pump 105 in accordance with instructions provided by the processor.

According to an embodiment of the present invention, the control system further includes a communication subsystem 110 for communicating with the upper computer through a wireless or wired network, so as to facilitate remote monitoring. When the communication is performed through a wireless network, the communication subsystem at least comprises a baseband unit and a radio frequency unit, the processor 102 is used for packaging the acquired attitude information and position information of the buoyancy tank control system and state information of each watertight capsule into frames and providing the frames to the baseband processing unit, the baseband processing unit is used for processing the information provided by the processor by information source coding, channel coding and the like to form a digital baseband signal and providing the digital baseband signal to the radio frequency unit, the radio frequency unit is used for performing digital-to-analog conversion on the information provided by the baseband processing unit and modulating the information onto a high-frequency carrier wave, and then transmitting the high-frequency carrier wave through an antenna, and is also used for demodulating and performing analog-to-digital conversion on a received instruction and providing. The present invention is provided with a communication subsystem as described in detail below in connection with fig. 3.

FIG. 3 is a block diagram of the RF circuitry of the communication subsystem in the control system provided by the present invention; as shown in fig. 3, according to an embodiment of the present invention, the rf circuit at least includes a receiving antenna, a limiter 131, a first band pass filter 132, a small signal amplifier 133, a frequency converter, a second band pass filter 113, a first intermediate frequency amplifier 114, a second intermediate frequency amplifier 115, and an analog-to-digital conversion circuit 116, wherein the antenna is configured to receive an electromagnetic signal, convert the electromagnetic signal into a high frequency electrical signal, limit the high frequency electrical signal by the limiter 131, and provide the high frequency electrical signal to the first band pass filter 132, the first band pass filter 132 extracts the high frequency signal and provides the high frequency signal to the small signal amplifier 133, the small signal amplifier 133 is configured to amplify the high frequency signal provided by the first band pass filter 132 and provide the high frequency signal to the frequency converter, the frequency converter includes a mixer, a local high frequency signal, and a filter 136, the mixer is configured to mix the high frequency signal with, the filter 1362 is configured to filter the low-frequency signal and provide the low-frequency signal to the second band-pass filter 113, the second band-pass filter 113 extracts the intermediate-frequency signal of the mixer and provides the intermediate-frequency signal to the first intermediate-frequency amplifier 114 for amplification and then provides the amplified intermediate-frequency signal to the second intermediate-frequency amplifier 115 and the analog-to-digital converter 116, and the intermediate-frequency amplifier 115 and the analog-to-digital converter 116 respectively perform intermediate-frequency signal amplification and analog-to-digital conversion and then provide the amplified. The first intermediate frequency amplifier 114 controls its amplification factor according to the automatic gain control voltage AGC.

According to one embodiment, the mixer comprises a first multiplier 135, a second multiplier 134, a phase shifter and a filter 136, wherein the first multiplier 135 is configured to multiply the local first high frequency signal with the high frequency signal provided by the small signal amplifier 133 to obtain an I-path signal; the phase shifter is used for shifting the phase of the local first high-frequency signal by 90 degrees and providing the phase shifted signal to the second multiplier 134, the second multiplier 134 is used for multiplying the signal of the local first high-frequency signal, which is shifted by 90 degrees, by the high-frequency signal provided by the small-signal amplifier 133 to obtain a Q-path signal, and the filter 136 is used for removing the high-frequency signal of the I-path signal and the Q-path signal and providing the high-frequency signal to the second band-pass filter 113. The second band-pass filter 113 is used to extract the intermediate frequency signal from the I and Q signals to provide an intermediate frequency amplifier 114.

As also shown in fig. 3, according to one embodiment, the present invention provides a first high frequency signal source for providing a first high frequency signal to a frequency converter, comprising: the frequency divider comprises a crystal oscillator 137, a frequency divider 111 with a ratio of N, a phase detector 138, a low-pass filter 139 and a voltage-controlled oscillator 140, wherein the crystal oscillator 137 is used for generating constant-amplitude signals with fixed frequency and supplying the constant-amplitude signals to the phase detector 138; the voltage controlled oscillator 140 generates an oscillation signal according to the first reference voltage Vf1 and the voltage provided by the low pass filter 139, the oscillation signal is divided by N by the frequency divider 111 and then provided to the phase detector 138, the phase detector 138 compares the phases of the signals provided by the frequency divider 111 and the crystal oscillator 137 and filters out a high frequency by the Low Pass Filter (LPF)139 to generate a voltage signal having a voltage proportional to the phase difference, the voltage signal is superimposed with the first reference voltage Vf1 to further control the first high frequency signal generated by the voltage controlled oscillator, and the first high frequency signal is provided to the mixer.

According to one embodiment, the radio frequency circuit further comprises a square wave generator for providing a square wave pulse signal to the analog-to-digital converter 116, the square wave generator comprising a second high frequency signal source comprising: a frequency divider 121, a phase detector 118, a low pass filter 119 and a voltage controlled oscillator 120 each having a ratio K, wherein the voltage controlled oscillator 120 generates a second high frequency signal according to the voltage provided by the second reference Vf2 and the low pass filter 119, the second high frequency signal is divided by the frequency divider 121 and then provided to the phase detector 118, the phase detector 118 compares the phases of the signals provided by the frequency divider 121 and the crystal oscillator 137 and filters the high frequency by the low pass filter 119 to generate a voltage signal having a voltage proportional to the phase difference, this voltage signal is superimposed with a second reference voltage Vf2 to further control the second high frequency signal generated by the voltage controlled oscillator 120, the second high frequency signal is provided to an inverting terminal (or non-inverting terminal) of the zero-crossing comparator 117, the non-inverting terminal (or non-inverting terminal) of the zero-crossing comparator 117 is connected to ground, and the output terminal is used for providing a square wave signal to the digital-to-analog converter 116, and the digital-to-analog converter 116 samples the I and Q intermediate frequency signals provided by the first intermediate frequency amplifier 114 by using the method signal.

According to a variant, the second high-frequency signal used in the square-wave generator can be obtained by phase-shifting, frequency-multiplying or frequency-dividing the local first high-frequency signal provided to the frequency converter, which saves costs and makes the control system more compact.

According to an embodiment, the radio frequency circuit further includes a transmitting portion, where the transmitting portion includes a quadrature amplifier, the baseband processing unit 130 is configured to perform source coding and channel coding on an I-path signal and a Q-path signal to be transmitted, respectively, convert the signals into an I-path analog signal and a Q-path analog signal through the digital-to-analog converter 141, and respectively provide the signals to the quadrature amplifier, and the quadrature amplifier includes a power amplifier 128, a power amplifier 129, and a phase shifter 142, where the power amplifier 128 is configured to modulate the I-path analog signal onto a third high frequency signal and perform power amplification; the phase shifter 106 is configured to shift the local third high frequency signal by 90 degrees, and provide the local third high frequency signal to the amplifier 129, the power amplifier 129 is configured to modulate the Q-path analog signal onto the third high frequency signal and perform power amplification, and the signals output by the power amplifier 128 and the power amplifier 129 are added and then provided to the transmitting antenna. The third high frequency signal is generated by a third high frequency signal source. The third high frequency signal source includes: a frequency divider 126 with a frequency dividing ratio of P, a phase detector 125, a low-pass filter 124 and a voltage-controlled oscillator 123, wherein the voltage-controlled oscillator 123 generates a third high-frequency signal according to the voltage provided by the third reference Vf3 and the low-pass filter 124, the third high-frequency signal is divided by P by the frequency divider 126 and then provided to the phase detector 123, the phase detector 125 compares the phases of the signals provided by the frequency divider 126 and the crystal oscillator 137 and filters out the high frequency by the low-pass filter 124 to generate a voltage signal with a voltage proportional to the phase difference, and the voltage signal is superposed with the third reference voltage Vf3 to further control the third high-frequency signal generated by the voltage-controlled oscillator 123.

According to an embodiment of the present invention, the third high frequency signal source further includes a frequency divider with a frequency dividing ratio Q for dividing the signal generated by the voltage controlled oscillator 123 by Q, and a buffer 127, and then the third multiplier 128 and the phase shifter 142 are provided through the buffer 127.

In the invention, the frequency dividing ratios N, K, P and Q are integers which are more than 1, the specific numerical values are controlled by the processor according to a program, and the first reference voltage Vf1, the second reference voltage Vf2 and the third reference voltage Vf3 are controlled by the processor according to the program. The radio frequency circuit provided by the invention generates high-frequency signals of various required frequencies by one frequency source, so that the cost is saved, the size is miniaturized, and the integration is convenient. When the rf circuit is formed as an integrated circuit, an inductance element, a crystal oscillator, and the like in the band-pass filter can be accessed from the outside of the integrated circuit.

Fig. 4 is a circuit diagram of a power amplifier provided by the present invention, and as shown in fig. 4, the power amplifier includes: includes a carrier frequency signal input terminal 201, a modulation signal input terminal 202, a power supply circuit 203, an amplifier 204, and a high frequency modulation signal output terminal 205. The high-frequency power amplifier 204 amplifies a signal input from the carrier signal input terminal 201. The power supply circuit 203 amplifies an input signal input from the modulation signal input terminal 202 and outputs the amplified signal to the amplifier 204 as power supply. The amplifier 204 amplifies the high-frequency signal input from the high-frequency signal input terminal 201 based on the power output from the power supply circuit 203, and outputs the amplified high-frequency signal from the high-frequency modulation signal output terminal 105.

The power supply circuit 203 is described in detail below. The power supply circuit 203 includes a linear amplifier 206, a current detector 207, a current output unit 208, a low-pass filter 209, a synthesizer 210, and a power supply terminal 211. The linear amplifier 206 amplifies the input signal input from the high-signal input terminal 202 and outputs the amplified signal to the synthesizer 210. The current detector 207 detects the current value of the output signal output from the linear amplifier 206 to the synthesizer 210, and outputs the signal of the detection result to the current output unit 208. In addition, the current detector 207 directly outputs the output signal output from the linear amplifier 206 to the synthesizer 210. The current output unit 108 outputs a current based on the detection result (i.e., the detected current value) detected by the current detector 207. That is, the current output unit 208 functions to amplify the current signal input to the power supply circuit 203. The low-pass filter 209 attenuates and outputs the high-frequency component of the output signal of the current output unit 208. The synthesizer 210 outputs power obtained by synthesizing the output of the linear amplifier 206 and the output of the low-pass filter 209 to a power supply terminal 211. The power supply terminal 211 is connected to the amplifier 104, and the power supply circuit 103 supplies power to the high-frequency power amplifier 104 through the power supply terminal 111.

Fig. 5 is a circuit diagram of the current output unit 208 and the low-pass filter 209 provided in the present invention. As shown in fig. 5, the current output unit 208 includes a first comparator 212, a second comparator 213, an inverter 214, a first switching amplifier 215, a second switching amplifier 216, and a DC power supply 217. The low-pass filter unit 209 includes a first low-pass filter 222 and a second low-pass filter 223. The current detector 207 detects the current value of the output signal output from the linear amplifier 206 to the synthesizer 210, and outputs a signal having a voltage corresponding to the detection result to the current output unit 208. Specifically, the current detector 207 increases the voltage of the output signal of the linear amplifier 206 in accordance with the increase in the current value of the output signal, and decreases the voltage of the output signal in accordance with the decrease in the current value. The first comparator 212 performs high/low level determination based on a prescribed threshold value on the input output signal from the current detector 207, and outputs the determination result to the first switching amplifier 215. The second comparator 213 performs high/low level determination based on a set threshold value on the input output signal from the current detection 207, and outputs the determination result to the second switching amplifier 216 via the inverter 214. The first switching amplifier 215 is input with an output from the first comparator 212. The first switching amplifier 215 outputs a signal whose input is amplified to the low-pass filter 209. In the second switching amplifier 216, the output from the second comparator 213 is inverted by the inverter 214 and then input. The second switching amplifier 216 amplifies the signal inputted thereto and outputs the amplified signal to the low-pass filter 209.

The first switching amplifier 215 and the second switching amplifier 216 will be described in detail below. The first switching amplifier 215 includes an NMOS drive transistor 218 and a diode 219. The drain of the driving transistor 218 is connected to a DC power supply 217, the gate of the driving transistor 218 is connected to the first voltage bias 212, and the source of the driving transistor 218 is connected to the low pass filter 209 and the diode 219. The anode of the diode 219 is grounded, and the cathode is connected to the source of the driving transistor 218 and the low-pass filter unit 209. Since the first switching amplifier 215 has the above configuration, when a positive voltage equal to or higher than the threshold voltage is input to the gate of the driving transistor 118, the current from the DC power supply 217 (on the drain side of the driving transistor 218) is the current of the low-pass filter unit 109 (on the drain side of the driving transistor 118 of the driving transistor 218).

When a voltage equal to or higher than a set threshold voltage is input to the gate of the driving transistor 218, the time differential value of the current flowing through the low-pass filter 209 is positive, and otherwise, the time differential value of the current flowing through the first low-pass filter 209 is negative or zero. That is, when a voltage equal to or higher than a predetermined threshold voltage is input to the gate of the driving transistor 218, the first switching amplifier 215 increases the output current. Thus, the first switching amplifier 215 outputs a current according to the output signal from the first comparator 212. Note that the predetermined threshold voltage in the driving transistor 218 is a voltage between the voltage of the high-level signal and the voltage of the low-level signal output from the first comparator 212. Further, the first switching amplifier 215 outputs a current having a positive current value.

The DC power supply 217 is a common power supply of the first switching amplifier 215 and the second switching amplifier 216. A DC power supply 217 is connected to the drain of the drive transistor 218 and the cathode of the diode 220. The first low-pass filter 222 of the low-pass filter unit 209 attenuates the high-frequency component of the output signal of the first switching amplifier 215 and outputs the attenuated high-frequency component. The second low-pass filter 223 attenuates the high-frequency component of the output signal of the second switching amplifier 216 and outputs the attenuated signal. The output signals of the first low-pass filter 222 and the second low-pass filter 223 are combined in a combiner, and output to the power supply terminal 211.

The invention is provided with the watertight cabins and the matrix control circuit which are arranged in a matrix shape, so when the connecting structure is not rigid, the balance of the buoyancy tank is controlled by controlling the water inlet condition and the water inlet quantity of the watertight cabins, thereby facilitating the stable sinking of the buoyancy tank. For example, when the buoyancy tank is high at the left and low at the right, the water inflow at the right side is fast, so that the switch in the watertight compartment electric control valve passage at the right side can be turned off or the opening time is shortened, the water inflow is suspended or the water inflow is reduced, the switch in the watertight compartment electric control valve passage at the left side is turned on, the opening amount is increased, the water inflow is accelerated, when the buoyancy tank is parallel to the horizontal plane, the switches in the watertight compartment electric control valve passages at the two sides are both turned on, and the water flows in simultaneously until the buoyancy tank sinks to the set position. In order to stabilize the buoyancy tank, the opening amount of the electric control valve is sequentially increased along a certain direction according to the inclination angle of the buoyancy tank, and if the buoyancy tank is high at the left and low at the right, the opening time of the electric control valve is sequentially reduced from left to right. When the buoyancy tank needs to be withdrawn, gas is injected into the air chamber of the watertight cabin, for example, air is injected to discharge water in the watertight cabin, and meanwhile, the buoyancy of the buoyancy tank is increased, so that the buoyancy tank floats up and is withdrawn, resources are saved, and the water area cannot be polluted by the abandoned buoyancy tank. The invention designs the matrix switch control circuit, which can conveniently control the water inlet and the water outlet of the watertight cabins in any row and any column, thereby conveniently controlling the sinking depth of the buoyancy tank.

The above embodiments are only used for illustrating the present invention, and the structure, the arrangement position, the connection mode, and the like of each component can be changed, and all equivalent changes and improvements based on the technical scheme of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. The utility model provides a floating platform watertight compartment formula flotation tank, its includes flotation tank main part and connecting device, connecting device is used for being connected floating platform and flotation tank main part, its characterized in that, flotation tank main part includes and is formed the bearing structure of M N mounting of arranging by girder and skeleton through plug connector or articulated elements connection and be the matrix form, M N mounting is used for fixing M N ballast device respectively, M and N are the integer that is greater than 1, the weight of ballast device can change.

2. The watertight compartment type buoyancy tank of a floating platform according to claim 1, wherein the ballast device is a watertight compartment, each watertight compartment is provided with a piston to divide the watertight compartment into an air chamber and a water chamber, the air chamber is connected to the air pump through an electric control valve, the water chamber is provided with a water inlet valve and a water discharge valve, the air pump pumps air in the air chamber to move the piston upward when water is injected into the watertight compartment, water outside the watertight compartment is injected into the water chamber through the water inlet valve, the air pump injects air into the air chamber to move the piston downward when water is discharged from the watertight compartment, water inside the watertight compartment is discharged out of the water chamber through the water discharge valve, and the on-off state of the electric control valve is controlled by the control system.

3. The floating platform watertight compartment buoyancy tank of claim 2, further comprising a control system comprising attitude sensors, depth sensors, a processor, a row selector, a column selector, N column select lines, M row select lines, M X N watertight compartment switches, and a first power supply, the attitude sensors for measuring angles of rotation of the buoyancy tank about the X, Y, and Z axes, respectively, of the reference coordinate system and providing angle information to the processor; the depth sensor is used for measuring the depth of the buoyancy tank structure sinking to the water surface and providing depth information to the processor; the processor provides control signals to the row selector and the column selector according to the information provided by the attitude sensor and the information provided by the depth sensor to control the on-off and the on-off time of some or all of the M x N watertight compartment switches so as to enable some watertight compartments or all watertight compartments in the M x N watertight compartments to be filled with water or drained of water.

4. The floating platform watertight compartment pontoon of claim 3, wherein each watertight compartment switch comprises a first electrical switch, a second electrical switch, and a relay, a control terminal of the first electrical switch is connected to one row select line, a first terminal is connected to one column select line, a second terminal is connected to a control terminal of the second electrical switch, a first terminal of the second electrical switch is connected to a first power line of a second power source, and a second terminal is connected to a second power line of the second power source via a coil of the relay, the second power line is a power line providing a positive power source to the pixel switch, and a normally open switch of the relay is connected in series to a power supply circuit of the electrical control valve connected to the second power source.

5. The floating platform watertight cabin pontoon according to claim 4, characterized in that the control system comprises at least a radio frequency circuit, the radio frequency circuit comprising at least a high frequency power amplifier (204) and a power supply circuit (203) supplying power to the high frequency power amplifier, the power supply circuit (1203) comprising a linear amplifier (206), a current detector (207), a current output unit (208), a low pass filter (209), a combiner (210) and a power supply terminal (211), the linear amplifier (206) amplifying an input signal input from the modulated signal input terminal (202) and outputting to the combiner (210); a current detector (207) for detecting the current value of the output signal outputted from the linear amplifier (206) to the synthesizer (210) and outputting the signal of the detection result to a current output unit (208); the current detector (207) directly outputs the output signal of the linear amplifier (206) output to the synthesizer (210); a current output unit (208) for outputting a current based on the current value detected by the current detector (207); a low-pass filter (109) that attenuates and outputs the high-frequency component of the output signal of the current output means (108); the combiner (210) outputs power obtained by combining the output of the linear amplifier (206) and the output of the low-pass filter unit (209) to a power supply terminal (211).

6. The floating platform watertight capsule pontoon of claim 5, wherein the current output unit (208) comprises a first comparator (212), a second comparator (213), an inverter (214), a first switching amplifier (215), a second switching amplifier (216), and a DC power supply (217); the low-pass filter unit (209) comprises a first low-pass filter (222) and a second low-pass filter (223), the current detector (207) detects the current value of the output signal outputted by the linear amplifier (206) to the synthesizer (210), and outputs a signal having a voltage corresponding to the detection result to the current output unit (208); a first comparator (212) performs high/low level determination based on a set threshold value on an input output signal from the current detector (207), and outputs a determination result to a first switching amplifier (215); a second comparator (213) that performs high/low level determination based on a set threshold value on the input output signal from the current detector (207), and outputs the determination result to a second switching amplifier (216) via an inverter (214); the first switching amplifier (215) is inputted with an output from the first comparator (212); the first switching amplifier (215) outputs the signal whose input is amplified to the low-pass filter (209); in the second switching amplifier (216), the output from the second comparator (213) is inverted by an inverter (214) and then input; the second switching amplifier (216) amplifies the signal inputted thereto and outputs the amplified signal to the low-pass filter (209).