CN104897298B - A kind of detection device based on fiber optic communication, system and method - Google Patents
A kind of detection device based on fiber optic communication, system and method Download PDFInfo
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- CN104897298B CN104897298B CN201510290698.XA CN201510290698A CN104897298B CN 104897298 B CN104897298 B CN 104897298B CN 201510290698 A CN201510290698 A CN 201510290698A CN 104897298 B CN104897298 B CN 104897298B
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Abstract
The detection device that the present invention relates to a kind of based on fiber optic communication, system and method, the system include：Detection device, host computer based on fiber optic communication and computer.Wherein, the detection device is for obtaining pressure signal and temperature signal, and pressure signal and temperature signal are respectively converted into the first optical signal and the second optical signal, re-sends in host computer；First optical signal and the second optical signal are respectively converted into the first electric signal and the second electric signal by host computer, and it is sent to computer by 485 bus modules, computer calculates ocean depth information according to the first electric signal, and ocean temperature information is calculated according to the second electric signal.The present invention utilizes optical-fibre communications strong antijamming capability, transmission rate is high, the features such as long transmission distance, the data of data collecting module collected in deserted probe are transferred to computer in real time, it solves the problems, such as to need to estimate ocean depth by fall time of popping one's head in, there is no limit for the decrease speed and putting mode to probe.
Description
Technical field
The present invention relates to Ocean environment information monitoring technical field more particularly to a kind of detection dresses based on fiber optic communication
It sets, system and method.
Background technology
Formula temp probe (expendable bathythermograph, abbreviation XBT) is jettisoned, ships can not influenced
Under operational configuration, quick obtaining ocean temperature section is asked for solving ocean environment parameter measurement of the ships under maneuvering condition
Topic, while being also the very important measurement equipment of oceanographic survey, Underwater Detection etc. and measurement means.
XBT is mainly made of gesture stability component, temperature sensor, signal transmssion line etc..Gesture stability portion on probe
Part makes probe decline in the seawater according to certain rule.After launching XBT, when probe reaches sea, in data acquisition board
Timer starts timing, in this way by the decrease speed popped one's head in and fall time, so that it may to calculate the depth of probe in the seawater
Value；Meanwhile according to certain rules the temperature value of seawater being converted into corresponding resistance mounted in the temperature sensor of probe distal end
Value, and by signal transmssion line, the resistance value of temperature sensor, be transferred in real time in data collector for sampling.Root
The temperature value that current seawater can be calculated according to resistance value, to obtain the temperature depth section of seawater.Chinese patent (application
Number CN201020223746.6) propose a kind of design method of XBT, including deserted probe combination, emitter etc..This is specially
The profit design method utilizes the resistance value of temperature sensor in water surface acquisition system acquisition probe, ocean depth data to pass through probe
Fall time is estimated to obtain, and the depth data precision that this mode obtains is inadequate, and repeatability is also poor with consistency.
Invention content
The purpose of the present invention is to provide a kind of detection device based on fiber optic communication, system and method, logical using optical fiber
Letter system will can be respectively obtained with ocean depth, the relevant data real-time delivery of temperature in detection device to host computer, on
Related data is passed to computer by position machine again.The present invention utilizes the direct Measuring Oceanic temperature of temperature sensor and pressure sensor
And depth data, the depth data information accuracy of the sea water advanced data of more accurate measurement, acquisition is high, repeated and consistent
Property is preferable；It, the features such as transmission rate is high, long transmission distance, will number in deserted probe using optical-fibre communications strong antijamming capability
The data acquired according to acquisition module are transferred to computer in real time, solve needs and estimate ocean depth by fall time of popping one's head in
The problem of, there is no limit for decrease speed and putting mode to probe.
In a first aspect, the present invention provides a kind of detection device based on fiber optic communication, including pressure acquisition module, temperature
Acquisition module, processor and electrooptic conversion module；
Pressure signal is sent to the processor by pressure acquisition module for acquiring pressure signal；
Temperature collecting module is used for collecting temperature signal, and temperature signal is sent to the processor；
Processor is used to pressure signal and temperature signal being sent to electrooptic conversion module；
Electrooptic conversion module is converted to for pressure signal to be converted to the first optical signal respectively, and by temperature signal
Two optical signals, and sent.
Preferably, pressure acquisition module includes pressure sensor, amplifying circuit and transmission unit；
Pressure sensor is for acquiring pressure signal；
Amplifying circuit is used to pressure signal being amplified processing；
Transmission unit is for by treated, pressure signal to be sent to processor.
Preferably, temperature collecting module includes：Temperature sensor, modulate circuit and transmission unit；
Temperature sensor is for acquiring the temperature signal；
Modulate circuit to temperature signal for being modulated processing；
Transmission unit is used to the temperature signal after modulation treatment being sent to the processor.
Preferably, processor includes：
Receiving unit and transmission unit；
The temperature letter that receiving unit receives the pressure signal of pressure acquisition module transmission respectively and temperature collecting module is sent
Number；
Pressure signal and temperature signal are sent to electrooptic conversion module by transmission unit.
Second aspect, the present invention provides a kind of detection system based on fiber optic communication, including it is as described in claim 1
Device, host computer and computer；
Host computer receives the first optical signal and the second optical signal that the electrooptic conversion module is sent, and by the first optical signal
The first electric signal and the second electric signal are converted to the second optical signal, then the first electric signal and the second electric signal are sent to calculating
Machine；
Computer determines ocean depth information according to the first electric signal；
Computer determines ocean temperature information according to the second electric signal.
Preferably, host computer includes photoelectric conversion module and 485 bus modules；
Photoelectric conversion module is used to receive the first optical signal and the second optical signal of electrooptic conversion module transmission, and by first
Optical signal and the second optical signal are converted to the first electric signal and the second electric signal；
First electric signal and the second electric signal are sent to computer by host computer by 485 bus modules.
The third aspect, the present invention provides a kind of detection method based on fiber optic communication, the method includes：
Acquire pressure signal；
Collecting temperature signal；
Pressure signal is converted into the first optical signal, and temperature signal is converted into the second optical signal；
First optical signal and the second optical signal are respectively converted into the first electric signal and the second electric signal, then by the first telecommunications
Number and the second electric signal sent；
Ocean depth information is determined according to the first electric signal；
Ocean temperature information is determined according to the second electric signal.
A kind of warm depth finding device, system and method based on fiber optic communication provided by the invention, utilize fiber optic communication
System will can be respectively obtained with ocean depth, the relevant data real-time delivery of temperature in detection device to host computer, upper
Related data is passed to computer by machine again.The present invention using the direct Measuring Oceanic temperature of temperature sensor and pressure sensor and
The depth data information accuracy of depth data, the sea water advanced data of more accurate measurement, acquisition is high, repeatability and consistency
Preferably；Using optical-fibre communications strong antijamming capability, the features such as transmission rate is high, long transmission distance, by data in deserted probe
The data of acquisition module acquisition are transferred to computer in real time, solve and need to estimate ocean depth by fall time of popping one's head in
Problem, there is no limit for decrease speed and putting mode to probe.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the detection device based on fiber optic communication provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of pressure acquisition module；
Fig. 3 is temperature collecting module structural schematic diagram；
Fig. 4 is pressure acquisition mould pressure sensor in the block and discharge circuit fundamental diagram；
Fig. 5 is temperature sensor and modulate circuit fundamental diagram in temperature collecting module；
Fig. 6 is a kind of structural schematic diagram of the detection system based on fiber optic communication provided in an embodiment of the present invention.
Specific implementation mode
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
In a first aspect, the present invention provides a kind of detection device based on fiber optic communication, Fig. 1 provides for the embodiment of the present invention
A kind of detection device based on fiber optic communication structural schematic diagram, as shown in Figure 1, the device includes：
Pressure acquisition module 10, temperature collecting module 20, processor 30, electrooptic conversion module 40；
Pressure acquisition module 10 includes pressure sensor 101, amplifying circuit 102 and transmission unit 103 (such as Fig. 2 institutes
Show).Pressure sensor 101 is used to acquire the pressure signal of seawater；Amplifying circuit 102 is used to carry out collected pressure signal
Enhanced processing；Transmission unit 103 is for by treated, pressure signal to be sent to processor 30.Temperature collecting module 20 includes temperature
Spend sensor 201, modulate circuit 202 and transmission unit 203 (as shown in Figure 3).Temperature sensor 201 is for acquiring seawater
Temperature signal；Modulate circuit 202 to collected temperature signal for being modulated processing；Transmission unit 203 will be for that will improve
Temperature signal afterwards is sent to processor 30.
It should be noted that the hair in transmission unit 103 and temperature collecting module 20 wherein in pressure acquisition module 10
It send unit 203 that can be controlled by computer, makes transmission unit 103 and temperature collecting module in pressure acquisition module 10
Transmission unit 203 in 20 pressure signal and temperature signal being respectively sent in processor at times.Such as：Pressure acquisition
Pressure signal is sent in processor 30 by the transmission unit 103 in module 10 in first time period；Second time period, temperature are adopted
Temperature signal is sent in processor 30 by the transmission unit 203 in collection module 20, and so on.Processor 30 includes to receive
Unit and transmission unit.Receiving unit in processor 30 includes two receiving channels, for receiving pressure acquisition mould respectively
The temperature that transmission unit 203 in pressure signal and temperature collecting module 20 that transmission unit 103 in block 10 is sent is sent
Signal；The pressure signal received and temperature signal are sent to electrooptic conversion module 40 by the transmission unit in processor 30.Its
In, the pressure signal received is converted to the first optical signal by electrooptic conversion module 40, and temperature signal is converted to second
Optical signal, and the first optical signal and the second optical signal are sent by fiber optic cables.
Wherein, the concrete operating principle of pressure acquisition module is as follows：
Fig. 4 is pressure acquisition mould pressure sensor in the block and discharge circuit fundamental diagram, as shown in figure 4, amplification electricity
Road includes：First operational amplifier, second operational amplifier, third operational amplifier, digital regulation resistance (not shown) with
And resistance R1~R9；
Pressure sensor (does not mark pressure sensor, four ends of pressure sensor are connected respectively power supply in this figure
Four terminals of VO1, i.e. 4v terminals connect the 4V terminals of power supply VO1, and VO+, VO- are connected respectively two of pressure sensor
Output end, ground terminal connect the ground terminal of power supply VO1, and by the ground terminal ground of VO1, so 4 of the VO1 in figure
A terminal can be considered as 4 connection terminals of pressure sensor) positive 4V terminals connection resistance R1 first end with resistance R2's
Node between first end；Positive output end is separately connected positive input terminal and the second operation of the first operational amplifier with negative output terminal
The positive input terminal of amplifier；The ground terminal ground of pressure sensor；The second end of resistance R1 pass through digital regulation resistance first
It (is the first passage of digital regulation resistance, number between L0 and H0 in figure that channel is connected with the negative input end of the first operational amplifier
Word potentiometer does not mark in figure)；The second end of resistance R2 is connected with the negative input end of second operational amplifier；Resistance R3
First end connection resistance R2 and the second operational amplifier negative input end between node；The second end of resistance R3 passes through number
It (is digital regulation resistance between L1 and H0 in figure that the second channel of word potentiometer is connected with the negative input end of the first operational amplifier
Second channel, digital regulation resistance do not mark in figure)；The negative input end of first operational amplifier passes through resistance R4 and the fortune
The output end for calculating amplifier is connected, and the first end of resistance R5 is connected with the negative input end of second operational amplifier, second end
It is connected with the output end of second operational amplifier；The first end of resistance R6 and the output end of second operational amplifier and resistance R5
Second end between node be connected；The second end of resistance R6 is connected with the negative input end of third operational amplifier；Resistance
Node between the first end of R7 and the output end of the first operational amplifier and resistance R4 is connected；Second end is put with third operation
The positive input terminal connection of big device；The positive input terminal of third operational amplifier is also connected with the first end of resistance R9；Negative input end connects
The first end of resistance R8；The second end of the output end connection resistance R8 of third operational amplifier；The second end of resistance R9 is grounded.
In addition, pressure acquisition module further includes：First constant pressure source (4V) and the second constant pressure source (1.8V)；First constant pressure
Source, for providing voltage for all circuits in pressure acquisition module other than third operational amplifier；Second constant pressure source is used
In providing voltage for third operational amplifier.
It should be noted that the main function of above-mentioned introduced digital regulation resistance is to adjust the zero in the circuit
And Full-span output, the resistance in the resistance and second channel of first passage can be denoted as Rd0 and Rd1 respectively.
Wherein, the pressure signal V after amplifying circuit enhanced processingpExpression be shown below：
Due to the calculated pressure signal numerical value V after amplifying circuit enhanced processingpWith the linear pass of depth of ocean
System, so when computer obtains the relevant numerical value V of seawater pressurepWhen, so that it may to calculate the depth of ocean accordingly.
Wherein, the concrete operating principle of temperature collecting module is as follows：
Fig. 5 is temperature sensor and modulate circuit fundamental diagram in temperature collecting module provided by the invention, such as Fig. 5
Shown, temperature sensor measurement circuit (circuit that i.e. modulate circuit is collectively constituted with temperature sensor) specifically includes：Third is permanent
Potential source, resistance R14~R17 and resistance R19, temperature sensor RT1, four-operational amplifier and the 5th operational amplifier；
The output end of third constant pressure source (1.8V) is separately connected the first end of resistance R15, the power supply of four-operational amplifier
The first input end of electrode input end and resistance R17 in terminal；The first of the second end connection resistance R14 of resistance R15
End；The second end of resistance R14 is grounded；The positive input terminal of four-operational amplifier is connected to the knot between resistance R15 and resistance R14
Point；The negative input end of four-operational amplifier connects the node between the output end of the operational amplifier and resistance R16 first ends；
Negative input end ground connection in the power supply terminal of four-operational amplifier；
The second end of resistance R16 is connected to the knot between the negative input end of the 5th operational amplifier and resistance R19 first ends
Point；
The second end of resistance R17 be connected to the positive input terminal of the 5th operational amplifier and temperature sensor RT1 first ends it
Between node；
The second end of temperature sensor RT1 is grounded；
The output end of 5th operational amplifier is connected to the second end of resistance R19.
It should be noted that the voltage of third constant pressure source is 1.8V, excitation electricity of the constant pressure source as temperature sensor RT1
Source, while the constant pressure source provides the reference voltage of A/D converter when temperature measures.Such design eliminates driving source
Change the influence to A/D output results and improves the stability of measurement to reduce the requirement to reference power supply.Also, temperature
The resistance R17 that connects on sensor RT1 is spent, partial pressure is played the role of, for limiting the electric current for flowing through temperature sensor, is reduced
Measurement error caused by spontaneous heating.According to the temperature signal V after the modulated circuit modulation treatment of the circuit outputoutIt is specific
Expression formula is shown below：
The resistance value of each resistance is rationally adjusted it can be seen from formula 2-1, so that it may output voltage is limited to 0V to A/D's
In full scale input range.The formula also illustrates except (R17 is Low Drift Temperature resistance to R17, and when temperature change is larger, resistance value is also several
Will not change) other than, if other each resistive element temperatures coefficient having the same, do not interfere with measurement result.
Divider resistance R17 selects the metalfilmresistor that temperature coefficient is small, performance is stablized in the present embodiment.Operational amplifier selects
With Low Drift Temperature, the operational amplifier of low noise, it ensure that and measure stability and accuracy.
A kind of detection device based on fiber optic communication provided in an embodiment of the present invention can be filled detection using fiber optic communication
Set it is middle it is obtaining respectively pass to host computer in real time with ocean depth, the related data of temperature, host computer is again related data
Computer is passed to, and calculates ocean temperature information and ocean depth information in real time by computer.The present invention utilizes temperature
Sensor and the direct Measuring Oceanic temperature of pressure sensor and depth data, the sea water advanced data of more accurate measurement obtain
Depth data information accuracy it is high, repeatability is preferable with consistency；Utilize optical-fibre communications strong antijamming capability, transmission rate
The data of data collecting module collected in deserted probe are transferred to computer by the features such as height, long transmission distance in real time, solution
The problem of needs of having determined estimate ocean depth by fall time of popping one's head in, decrease speed and putting mode to probe do not limit
System.
Second aspect, the present invention provides a kind of detection system based on fiber optic communication, Fig. 6 provides for the embodiment of the present invention
A kind of detection system based on fiber optic communication structural schematic diagram；As shown in fig. 6, the system includes first aspect introduction
Detection device 50, host computer 60 based on fiber optic communication and computer 90；Wherein, lead between detection device 50 and host computer 60
Cross fiber optic cables connection；Pass through twisted pair line connection between host computer 60 and computer.
Electrooptic conversion module 40 in detection device is used to the first optical signal and the second optical signal being sent to host computer 60
In.As shown in figure 4, host computer 60 includes photoelectric conversion module 70 and 485 bus modules 80；Photoelectric conversion module is for receiving electricity
The first optical signal and the second optical signal that light conversion is sent, and the first optical signal is converted into the first electric signal, and by second
Optical signal is converted to the second electric signal；Host computer 60 is by 485 bus modules 80, according to the communication protocol of 485 buses, by first
Electric signal and the second electric signal are sent to by twisted-pair feeder in computer 90.Computer 90 is according to certain rule by the first telecommunications
Number and the second electric signal parse in a data frame, according to the first electric signal calculate ocean depth information, according to the second electric signal meter
Calculate ocean temperature information.
Specifically, because the depth of the first electric signal and ocean is linear, according to certain proportionate relationship, meter
Calculation machine 90 can calculate the depth information of ocean by the first electric signal.
Equally, computer 90 calculates the resistance value of the thermistor in temperature sensor according to the second electric signal, according to temperature-sensitive
The resistance value of resistance is often fitted with Steinhart-Hart equations by resistance value-temperature curve of thermistor：
1/T=A+Bln (R)+C (lnR)3 (3-1)
In formula:
T-absolute temperature (K °)；
The resistance value (Ω) of R-thermistor
A, B, the constant of C-curve matching.
It is the constant term that can determine in equation that three temperature spots are chosen in required temperature-measuring range.It is past in practical applications
Toward taking more temperature spots to be calibrated, more accurate matched curve can be obtained.And then the temperature letter of ocean is calculated accordingly
Breath.
A kind of detection system based on fiber optic communication provided in an embodiment of the present invention can be filled detection using fiber optic communication
Set it is middle it is obtaining respectively pass to host computer in real time with ocean depth, the relevant data of temperature, host computer is again related data
Computer is passed to, and calculates ocean depth information and ocean temperature information in real time by computer.Temperature is utilized in the present invention
Degree sensor and the direct Measuring Oceanic temperature of pressure sensor and depth data, the sea water advanced data of more accurate measurement obtain
The depth data information accuracy obtained is high, and repeatability is preferable with consistency；Utilize optical-fibre communications strong antijamming capability, transmission rate
The data of data collecting module collected in deserted probe are transferred to computer by the features such as height, long transmission distance in real time, solution
The problem of needs of having determined estimate ocean depth by fall time of popping one's head in, decrease speed and putting mode to probe do not limit
System.
The third aspect, corresponding, the present invention also provides a kind of detection method based on fiber optic communication, this method includes
Following steps：
It acquires pressure signal and temperature signal respectively first, pressure signal is then converted into the first optical signal respectively, with
And temperature signal is converted into the second optical signal, then it is transferred to host computer by fiber optic cables, the first optical signal in host computer
It is converted to the first electric signal and the second optical signal is converted to the second electric signal.Based on the communication protocol of 485 buses, by first
Electric signal and the second electric signal are sent to by twisted-pair feeder in computer, and computer determines ocean depth according to the first electric signal
Information determines ocean temperature information according to the second electric signal.
A kind of detection device based on fiber optic communication provided in an embodiment of the present invention, system and method, utilize fiber optic communication
Host computer, host computer can be passed in real time with ocean temperature, the related data of depth by being obtained respectively in detection device
Related data is passed to computer again, calculates ocean temperature information and ocean depth information in real time by computer.This hair
Bright middle using the direct Measuring Oceanic temperature of temperature sensor and pressure sensor and depth data, more accurate measurement seawater is deep
The depth data information accuracy of degrees of data, acquisition is high, and repeatability is preferable with consistency；Utilize optical-fibre communications anti-interference ability
By force, the features such as transmission rate is high, long transmission distance, the data of data collecting module collected in deserted probe are transmitted in real time
To computer, solve the problems, such as to need to estimate ocean depth, the decrease speed to probe and dispensing by fall time of popping one's head in
There is no limit for mode.
Professional should further appreciate that, described in conjunction with the examples disclosed in the embodiments of the present disclosure
Unit and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software generally describes each exemplary composition and step according to function in the above description.
These functions are implemented in hardware or software actually, depend on the specific application and design constraint of technical solution.
Professional technician can use different methods to achieve the described function each specific application, but this realization
It should not be considered as beyond the scope of the present invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can use hardware, processor to execute
The combination of software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only memory
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of detection device based on fiber optic communication, which is characterized in that including pressure acquisition module, temperature collecting module, place
Manage device and electrooptic conversion module；
The pressure signal is sent to the processor by the pressure acquisition module for acquiring pressure signal；
The temperature collecting module is used for collecting temperature signal, and the temperature signal is sent to the processor；
The processor is used to the pressure signal and temperature signal being sent to the electrooptic conversion module；
The electrooptic conversion module by the pressure signal for being converted to the first optical signal respectively, and by the temperature signal
The second optical signal is converted to, and is sent；
The temperature collecting module includes：Temperature sensor, modulate circuit and transmission unit；
The temperature sensor is for acquiring the temperature signal；
The modulate circuit to the temperature signal for being modulated processing；
The transmission unit is used to the temperature signal after modulation treatment being sent to the processor；
The temperature sensor and the modulate circuit include：Third constant pressure source, resistance R14~R17 and resistance R19, temperature
Sensor RT1, four-operational amplifier and the 5th operational amplifier；
The output end of the third constant pressure source is separately connected the first end of resistance R15, in the power supply terminal of four-operational amplifier
Electrode input end and resistance R17 first input end；The first end of the second end connection resistance R14 of resistance R15；Resistance
The second end of R14 is grounded；The positive input terminal of four-operational amplifier is connected to the node between resistance R15 and resistance R14；4th
The negative input end of operational amplifier connects the node between the output end of the operational amplifier and resistance R16 first ends；4th fortune
Calculate the negative input end ground connection in the power supply terminal of amplifier；
The second end of resistance R16 is connected to the node between the negative input end of the 5th operational amplifier and resistance R19 first ends；
The second end of resistance R17 is connected between the positive input terminal of the 5th operational amplifier and temperature sensor RT1 first ends
Node；
The second end of temperature sensor RT1 is grounded；
The output end of 5th operational amplifier is connected to the second end of resistance R19；
The R17 is Low Drift Temperature resistance；
Wherein, by the modulate circuit to the temperature signal temperature signal V that is modulated that treatedoutEmbody
Formula is shown below：
The wherein described third constant pressure source
For 1.8V.
2. detection device according to claim 1, which is characterized in that the pressure acquisition module include pressure sensor,
Amplifying circuit and transmission unit；
The pressure sensor is for acquiring the pressure signal；
The amplifying circuit is used to the pressure signal being amplified processing；
The transmission unit is for by treated, pressure signal to be sent to the processor.
3. the apparatus according to claim 1, which is characterized in that the processor includes：
Receiving unit and transmission unit；
The receiving unit receives the pressure signal and the temperature collecting module that the pressure acquisition module is sent respectively
The temperature signal sent；
The pressure signal and the temperature signal are sent to the electrooptic conversion module by transmission unit.
4. a kind of detection system based on fiber optic communication, which is characterized in that including dress as described in any one of claims 1-3
It sets, host computer and computer；
The host computer receives first optical signal and second optical signal that the electrooptic conversion module is sent, and by institute
State the first optical signal and second optical signal be converted to the first electric signal and the second electric signal, then by first electric signal and
Second electric signal is sent to the computer；
The computer determines ocean depth information according to first electric signal；
The computer determines ocean temperature information according to second electric signal.
5. detection system according to claim 4, which is characterized in that the host computer includes photoelectric conversion module and 485
Bus module；
The photoelectric conversion module is used to receive first optical signal and second light that the electrooptic conversion module is sent
Signal, and first optical signal and second optical signal are converted into the first electric signal and the second electric signal；
First electric signal and second electric signal are sent to the meter by the host computer by 485 bus module
Calculation machine.
6. a kind of detection method based on fiber optic communication, which is characterized in that it is any described that the method is applied to claim 1-3
Device, including：
Acquire pressure signal；
Collecting temperature signal；
The pressure signal is converted into the first optical signal, and the temperature signal is converted into the second optical signal；
First optical signal and second optical signal are respectively converted into the first electric signal and the second electric signal, then will be described
First electric signal and second electric signal are sent；
Ocean depth information is determined according to first electric signal；
Ocean temperature information is determined according to second electric signal.
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| CN109059872B (en) * | 2018-05-24 | 2021-03-12 | 苏州戎维邦信息技术有限公司 | Autonomous underwater low-power-consumption composite depth-setting circuit module and depth-setting method |
| CN114754817A (en) * | 2022-04-19 | 2022-07-15 | 北京星天科技有限公司 | Ocean parameter measuring equipment, measuring probe, probe jettisoning device and measuring host |
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