CN117723511A - Soil type field rapid identification system and analysis method - Google Patents
Soil type field rapid identification system and analysis method Download PDFInfo
- Publication number
- CN117723511A CN117723511A CN202311767222.1A CN202311767222A CN117723511A CN 117723511 A CN117723511 A CN 117723511A CN 202311767222 A CN202311767222 A CN 202311767222A CN 117723511 A CN117723511 A CN 117723511A
- Authority
- CN
- China
- Prior art keywords
- circuit
- main control
- control module
- soil
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002689 soil Substances 0.000 title claims abstract description 96
- 238000004458 analytical method Methods 0.000 title description 6
- 238000001514 detection method Methods 0.000 claims abstract description 74
- 238000005070 sampling Methods 0.000 claims abstract description 34
- 238000001228 spectrum Methods 0.000 claims abstract description 21
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- 238000007600 charging Methods 0.000 claims description 86
- 238000007726 management method Methods 0.000 claims description 50
- 238000006243 chemical reaction Methods 0.000 claims description 34
- 230000002457 bidirectional effect Effects 0.000 claims description 21
- 230000000903 blocking effect Effects 0.000 claims description 20
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 13
- 230000003993 interaction Effects 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000013500 data storage Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241001070941 Castanea Species 0.000 description 1
- 235000014036 Castanea Nutrition 0.000 description 1
- 241000463219 Epitheca Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004856 soil analysis Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to the field of soil detection equipment and provides a soil type field rapid identification system, which comprises a main control module, a power supply module, a temperature detection circuit and a soil sample light detection module, wherein the soil sample light detection module comprises a light source driving circuit, a digital micromirror controller, a photoelectric detector and a sampling circuit, the input end of the light source driving circuit is connected with the power supply module, the controlled end is connected with the main control module, the output end is connected with a light source so as to regulate the output current of the light source, the main control module receives the feedback of a light detector, determines reflection spectrum information and further judges the type of a soil matrix, and the temperature detection circuit is connected with the main control module and is used for transmitting the internal temperature information of an instrument to the main control module; the invention has high detection precision when carrying out soil light reflection detection, and can compensate according to temperature.
Description
Technical Field
The invention relates to the field of soil detection equipment, in particular to a soil type field rapid identification system.
Background
The main soil occurrence types in China can be summarized into red soil, brown soil, black soil, chestnut calcium soil, desert soil, tide soil, silt-filled soil, paddy soil, wet soil, saline-alkali soil, lithology soil, high mountain soil and other series, and the soil texture has close relation with the soil ventilation, fertilizer and water retention conditions and the cultivation difficulty; soil texture conditions are important bases for developing soil utilization, management and improvement measures.
The traditional method for judging the soil texture mostly adopts physical observation and experiment methods, is inconvenient to identify, and because the soil profile is under the action of near infrared light, different reflection spectrum curved surface data can be displayed due to the difference of particles of each layer, so that spectrum analysis is widely applied to soil type detection, but the internal temperature of an instrument can be increased due to the operation of an internal light source of the existing soil matrix type analysis device, if the device is required to be used in the field, detection data can be quickly obtained, and the accuracy of light reflection detection can be influenced by the excessively high internal temperature in high-temperature weather.
Disclosure of Invention
The invention solves the problem of how to provide a soil type field rapid identification system which has high detection precision and can be compensated according to temperature.
In order to solve the above problems, the present invention provides a soil type field rapid identification system, comprising: the soil sample optical detection module comprises a light source driving circuit, a digital micro-mirror controller, a photoelectric detector and a sampling circuit, wherein the input end of the light source driving circuit is connected with the power source module, the controlled end of the light source driving circuit is connected with the main control module, the output end of the light source driving circuit is connected with the light source so as to regulate the output current of the light source, the input end of the photoelectric detector is connected with the digital micro-mirror controller so as to convert a reflected light signal received by the digital micro-mirror controller into an electric signal, the electric signal is transmitted to the main control module through the sampling circuit, the main control module is compared with set information to determine reflection spectrum information, and then the matrix type of soil to be detected is determined, and the temperature detection circuit is connected with the main control module and is used for transmitting the internal temperature information of an instrument to the main control module.
Further, the light source driving circuit comprises a voltage stabilizing circuit and an output current control circuit, wherein the input end of the voltage stabilizing circuit is connected with the power supply module, the output end of the voltage stabilizing circuit is connected with the input end of the output current control circuit, the controlled end of the output current control circuit is connected with the main control module, and the output end of the output current control circuit is connected with the light source.
Further, the voltage stabilizing circuit comprises a first power supply conversion chip and a switching value isolation circuit, wherein the input end of the switching value isolation circuit is connected with the main control module, the output end of the switching value isolation circuit is connected with the enabling end of the first power supply conversion chip, the input end of the first power supply conversion chip is connected with the power supply module, and the output end of the first power supply conversion chip is connected with the output current control circuit; the output current control circuit comprises a first current output chip, a power supply filter circuit, a first amplifying circuit and a current sampling circuit, wherein the current sampling circuit comprises a first sampling resistor and a first current sensing amplifier, a first input end of the first amplifying circuit is connected with an output end of the voltage stabilizing circuit through the power supply filter circuit, an input end of the first amplifying circuit is connected with the main control module, an output end of the first amplifying circuit is connected with a controlled end of the first current output chip, the first sampling resistor is arranged between the light source and the ground, two input ends of the first current sensing amplifier are respectively connected with two ends of the first sampling resistor, and an output end of the first current sensing amplifier is connected with a second input end of the first current output chip so as to realize accurate control of light source current.
Further, the sampling circuit comprises a second amplifying circuit, a third amplifying circuit and a first digital-to-analog conversion circuit, wherein two output ends of the photoelectric detector are respectively connected with the input end of the first digital-to-analog conversion circuit through the second amplifying circuit and the third amplifying circuit, and the output end of the first digital-to-analog conversion circuit is connected with the main control module.
Further, the power supply module comprises a power supply conversion circuit and a charging circuit, wherein the input end of the power supply conversion circuit is connected with the battery, the output end of the power supply conversion circuit is respectively connected with the main control module and the soil sample light detection module, the input end of the charging circuit is suitable for being connected with an external power supply, and the output end of the charging circuit is connected with the battery.
Further, the charging circuit comprises a power input interface, a charging management chip, a charging control circuit, a bidirectional blocking circuit, a power supply path selection circuit, an input voltage detection circuit, an input current detection circuit, a charging current detection circuit and a battery voltage detection circuit, wherein the input end of the bidirectional blocking circuit is connected with the power input interface, the output end of the bidirectional blocking circuit is connected with the charging control circuit, the controlled end of the charging control circuit is connected with the charging management chip, the output end of the charging control circuit is connected with the battery so as to realize the control of the charging current of the battery, the input end of the input voltage detection circuit is connected with the power input interface, the output end of the input current detection circuit is connected with the input end of the charging control circuit, the output end of the charging current detection circuit is connected with the output end of the charging control circuit, the output end of the charging current detection circuit is connected with the charging management chip, the input end of the battery voltage detection circuit is connected with the battery, the output end of the charging management chip is connected with the charging management chip, the main control chip is connected with the power supply path selection circuit, and the input end of the charging management chip is connected with the second input end of the power supply path.
Further, the bidirectional blocking circuit comprises a first MOS tube and a second MOS tube, wherein grid electrodes of the first MOS tube and the second MOS tube are connected with the output end of the charging management chip, a drain electrode of the first MOS tube is connected with the power input interface, a source electrode of the first MOS tube is connected with a source electrode of the second MOS tube, and a drain electrode of the second MOS tube is connected with the charging control circuit; the power supply path selection circuit comprises a first diode and a second diode, wherein the anode of the first diode is connected with the power input interface, the anode of the second diode is connected with the battery, and the cathode of the first diode and the cathode of the second diode are connected with the power end of the charge management chip.
Further, the charging control circuit comprises a third MOS tube, a fourth MOS tube and a first inductor, wherein grid electrodes of the third MOS tube and the fourth MOS tube are respectively connected with one PWM signal end of the charging management chip, a drain electrode of the third MOS tube is connected with an output end of the bidirectional blocking circuit, a source electrode of the third MOS tube is connected with a first end of the first inductor, a drain electrode of the fourth MOS tube is connected with the first end of the first inductor, the source electrode of the fourth MOS tube is grounded, and an output end of the first inductor is connected with the battery.
Further, the soil type field rapid identification system further comprises a communication module and a man-machine interaction module, wherein the communication module is connected with the main control module and used for communication between the main control module and the cloud platform, and the man-machine interaction module is connected with the main control module and used for operation of a user.
A soil type field rapid identification method comprises the following steps:
making a sample of soil to be measured, and placing the soil profile sample in a sample placing box;
the user sends a sampling instruction to the main control module;
the main control module controls the light source driving circuit to drive the light source according to the setting, and the light source continuously emits near infrared light with different intensities according to the setting to irradiate the soil profile sample;
the temperature detection circuit transmits the temperature information to the main control module, the main control module compares the temperature information with a set threshold value, and if the temperature information is in a range to be compensated, the light source driving circuit is controlled to make a compensation signal, and the light source is regulated;
the digital micromirror controller collects the reflection information of the soil profile sample and transmits the reflection information to the main control module;
and the main control module forms a reflection spectrum curved surface according to the emission information, compares and matches the reflection spectrum curved surface with the spectrum curved surface in the data storage library, and identifies the soil type of the soil to be detected.
Compared with the prior art, the invention has the beneficial effects that:
the power supply module provides power for the main control module and the soil sample optical detection module, the light source driving circuit is controlled by the main control module, and then the light source is driven, the current flowing through the light source is regulated, the intensity of emitted light is controlled, the light reflection conditions of different intensities are collected and are subjected to contrast analysis, soil information is accurately obtained, the digital micromirror controller, namely the DMD device, is used for collecting emitted light signals and carrying out digital light modulation, the modulated light enters the photoelectric detector, the photoelectric detector receives and photoelectrically converts the modulated light signals, the converted electric signals are processed by the sampling circuit and then are transmitted to the main control module, the main control module analyzes the reflected spectrum information of the soil sample, and then the reflected spectrum information is compared with stored spectrum information in the main control module database, the soil type of the soil sample is matched, meanwhile, the temperature sensor transmits the temperature information inside the instrument to the main control module, the driving current of the light source driving circuit is regulated by the main control module, temperature compensation is achieved, the accuracy of light signal reflection detection is guaranteed, the use under field conditions is convenient, and the soil matrix type is rapidly analyzed.
Drawings
FIG. 1 is a schematic diagram of a schematic structure of a soil sample light detection module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a schematic structure of a light source driving circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a sampling circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a charging circuit according to an embodiment of the present invention;
fig. 5 is a schematic diagram of the overall principle structure of an embodiment of the present invention.
Reference numerals illustrate:
1-a main control module; 2-a power module; 21-a power input interface; 22-a charge management chip; 23-a charge control circuit; 24-a bidirectional blocking circuit; 25-a power supply path selection circuit; 26-an input voltage detection circuit; 27-an input current detection circuit; 28-a charging current detection circuit; 29-a battery voltage detection circuit; 3-a temperature detection circuit; 4-a soil sample light detection module; 41-a light source driving circuit; 411-voltage stabilizing circuit; 412-an output current control circuit; 42-a digital micromirror controller; 43-a photodetector; a 44-sampling circuit; 441-a second amplifying circuit; 442-a third amplifying circuit; 443-a first digital to analog conversion circuit; 5-a communication module; and 6-a man-machine interaction module.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, the descriptions of the terms "embodiment," "one embodiment," and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or illustrated embodiment of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.
As shown in fig. 1, the present invention provides a soil type field rapid identification system, comprising: the soil sample optical detection module 4 comprises a light source driving circuit 41, a digital micro-mirror controller 42, a photoelectric detector 43 and a sampling circuit 44, wherein the input end of the light source driving circuit 41 is connected with the power source module 2, the controlled end of the light source driving circuit is connected with the main control module 1, the output end of the light source driving circuit is connected with a light source so as to adjust the output current of the light source, the input end of the photoelectric detector 43 is connected with the digital micro-mirror controller 42 so as to convert a reflected light signal received by the digital micro-mirror controller 42 into an electric signal, the input end of the sampling circuit 44 is connected with the output end of the photoelectric detector 43, the output end of the sampling circuit is connected with the main control module 1 so as to transmit the electric signal to the main control module 1, and the temperature detection circuit 3 is connected with the main control module 1 so as to transmit the internal temperature information of an instrument to the main control module 1.
It should be noted that, when in use, the power module 2 provides power for the main control module 1 and the soil sample light detection module 4, the light source driving circuit 41 is controlled by the main control module 1 to drive the light source, regulate the current flowing through the light source, control the intensity of the emitted light, collect the reflection condition of the light with different intensities for comparative analysis, accurately obtain the soil information, the digital micromirror controller 42, i.e. the DMD device, is used for collecting the emitted light signals, the DMD device is internally provided with a plurality of micromirrors, when the light reflected by the soil to be detected is reflected to the surface of the DMD device through the grating, the DMD device carries out digital light modulation on the reflected light through the internal micromirrors, the modulated light enters the photodetector 43, the digital micromirror controller 42 can adopt the DMD device with the model of DLP2010NIR, the photodetector 43 receives and photoelectrically converts the modulated light signals, the converted electric signal is processed by the sampling circuit 44 and then transmitted to the main control module 1, the main control module 1 analyzes the electric signal to obtain the reflection spectrum data of the soil profile sample, the temperature sensor is arranged at the light source in the soil analysis instrument loading the system, the temperature sensor transmits the temperature information in the instrument to the main control module 1 when the temperature sensor works to cause the temperature in the instrument to rise in high-temperature weather, the main control module 1 carries out temperature compensation according to the temperature information, the light source driving circuit 41 can send out a control signal to adjust the magnitude of the driving current, for example, the driving current of the light source can be reduced when the temperature is too high so as to ensure the accuracy of the reflection detection of the light signal, in the embodiment, the light source can adopt an LED light source, the light source can have multiple paths according to the requirement and the light source driving circuit 41, and a plurality of uniformly distributed light sources are formed, and the near infrared light detection is carried out on different detection points of the sample, and a control chip with the model of TM4C1297NCZADI3 can be adopted as the main control module 1.
In one embodiment of the present invention, the light source driving circuit 41 includes a voltage stabilizing circuit 411 and an output current control circuit 412, wherein an input end of the voltage stabilizing circuit 411 is connected to the power module 2, an output end of the voltage stabilizing circuit is connected to an input end of the output current control circuit 412, a controlled end of the output current control circuit 412 is connected to the main control module 1, and an output end of the output current control circuit is connected to the light source.
It should be noted that, as shown in fig. 2, the output current control circuit 412 may control the current to the light source, so as to change the intensity of the light source, the voltage stabilizing circuit 411 is used to provide a stable working voltage for the output current control circuit 412, so as to ensure the stability of the control of the current to the light source, the switch of the voltage stabilizing circuit 411 is controlled by the main control module 1, when the detection of the light source is not needed, the main control module 1 can close the voltage stabilizing circuit 411 in time, and cut off the power supply to the light source driving circuit 41, so as to reduce the standby energy consumption.
In one embodiment of the present invention, the voltage stabilizing circuit 411 includes a first power conversion chip and a switching value isolation circuit, wherein an input end of the switching value isolation circuit is connected to the main control module 1, an output end of the switching value isolation circuit is connected to an enable end of the first power conversion chip, an input end of the first power conversion chip is connected to the power module 2, and an output end of the first power conversion chip is connected to the output current control circuit 412; the output current control circuit 412 includes a first current output chip, a power supply filter circuit, a first amplifying circuit and a current sampling circuit 44, the current sampling circuit 44 includes a first sampling resistor and a first current sensing amplifier, a first input end of the first amplifying circuit is connected with an output end of the voltage stabilizing circuit 411 through the power supply filter circuit, an input end of the first amplifying circuit is connected with the main control module 1, an output end is connected with a controlled end of the first current output chip, the first sampling resistor is arranged between the light source and the ground, two input ends of the first current sensing amplifier are respectively connected with two ends of the first sampling resistor, and an output end is connected with a second input end of the first current output chip to realize accurate control of the light source current.
It should be noted that, as shown in fig. 2, the chip U31 is a first power conversion chip, after the switching value signal sent by the main control module 1 is isolated, the switching value signal is output to the enable end EN of the chip U31, so as to control the switch of the chip U31, so as to reduce the energy consumption to be stored, and the type of the chip U31 can adopt TPS81256SIP; in the output current control circuit 412, the inductor L5 and the capacitors C96 and C97 form a power supply filter circuit, the chip U32 is a first current output chip, the voltage after voltage stabilization enters the first input end of the chip U32 through the power supply filter circuit, the 10 pin of the chip U32 is a controlled end, the main control module 1 sends out a signal to the 10 pin of the chip U32 to change the current output of the output end of the chip U32, namely, the current output of the light source is changed, the chip U33 is a first current sense amplifier, the resistor R55 is a first sampling resistor, the chip U33 can obtain the current value flowing through the light source through the voltage at two ends of the resistor R55 and convert the current value into a voltage signal to be output to the second input end of the chip U32, so that the current of the light source can be controlled more accurately through detection feedback of the current, the type of the chip U32 can be OPA567AIRHG, and the type of the chip U33 can be INA213BIDCkt.
In one embodiment of the present invention, the sampling circuit 44 includes a second amplifying circuit 441, a third amplifying circuit 442 and a first digital-to-analog conversion circuit 443, two output ends of the photodetector 43 are respectively connected to an input end of the first digital-to-analog conversion circuit 443 via the second amplifying circuit 441 and the third amplifying circuit 442, and an output end of the first digital-to-analog conversion circuit 443 is connected to the main control module 1.
It should be noted that, as shown in fig. 3, the amplified signal output by the photodetector 43 enters the first digital-to-analog conversion circuit 443, the signal passes through the operational amplifier circuit and has the characteristics of high precision, low noise, low power consumption and high gain bandwidth, the signal can be restored to the original signal to the greatest extent after being sampled by the first digital-to-analog conversion circuit 443, the scanning precision is ensured, the interface J8 is an interface connected with the main control module 1, and the output signal of the temperature detection circuit 3 is also transmitted to the main control module 1 through the interface J8.
In one embodiment of the present invention, the power module 2 includes a power supply conversion circuit, an input end of which is connected to a battery, an output end of which is connected to the main control module 1 and the soil sample light detection module 4, respectively, and a charging circuit, an input end of which is adapted to be connected to an external power supply, and an output end of which is connected to the battery.
It should be noted that, this system adopts the lithium cell as the power, can satisfy the demand of open-air soil detection, and power supply conversion circuit is used for after battery voltage conversion, for main control module 1 and soil sample photo detection module 4 supply power, and charging circuit is used for carrying out accurate control to the charging of battery.
In one embodiment of the present invention, the charging circuit includes a power input interface 21, a charging management chip 22, a charging control circuit 23, a bidirectional blocking circuit 24, a power supply path selection circuit 25, an input voltage detection circuit 26, an input current detection circuit 27, a charging current detection circuit 28, and a battery voltage detection circuit 29, wherein an input end of the bidirectional blocking circuit 24 is connected to the power input interface 21, an output end of the bidirectional blocking circuit is connected to the charging control circuit 23, a controlled end is connected to the charging management chip 22, a controlled end of the charging control circuit 23 is connected to the charging management chip 22, an output end is connected to the battery to realize control of a charging current of the battery, an input end of the input voltage detection circuit 26 is connected to the power input interface 21, an output end is connected to the charging management chip 22, an input end of the input current detection circuit 27 is connected to an input end of the charging control circuit 23, an output end of the charging current detection circuit 28 is connected to an output end of the charging control circuit 23, an output end of the charging management chip 22 is connected to the charging management chip 22, an output end of the charging control circuit 29 is connected to the battery management chip, an output end is connected to the power supply path selection circuit 1, and the power supply path selection circuit is connected to the power supply chip 22.
It should be noted that, as shown in fig. 4, during charging, the power input interface 21 is connected to an external power source through the power adapter, the charging management chip 22 sends a PWM control signal to the charging control circuit 23 to control and change the charging current to the battery, the input voltage detection circuit 26 and the input current detection circuit 27 can transmit the voltage and current information input through the power input interface 21 to the charging management chip 22, the charging current detection circuit 28 can transmit the charging current information to the charging management chip 22, the battery voltage detection circuit 29 can see the voltage information of the battery to the charging management chip 22, and further obtain the voltage and electric quantity conditions of the battery, when the voltage at the input end is abnormal, the charging management chip 22 cuts off the signal output, stops charging and sends an abnormal signal to the main control module 1, and the charging management chip 22 also can set according to the electric quantity and the internal conditions of the battery during charging, under different electric quantity, the charging control circuit 23 is controlled to output the current of the battery, a reasonable current curve under different electric quantity is realized, quick charging under low electric quantity, slow charging under high electric quantity and battery protection are realized, the charging management chip 22 can continuously adjust output signals according to the combination of the input current and the charging current, the accurate control of the charging current is realized, the charging curve is stable under the stage electric quantity, constant current charging in a corresponding time end is maintained, the charging stability is ensured, the power supply path selection circuit 25 can automatically select a power supply object for the charging management chip 22, when an external power supply is connected, the power supply is supplied to the charging management chip 22 through the power supply input interface 21, the battery efficiency and the service life are improved, when the external power supply is not connected, the power supply is supplied to the charging management chip 22 through the battery, at the moment, the charge management chip 22 also transmits battery power information to the main control module 1, and timely reminds about power consumption, and when charging is not needed, the charge management chip 22 also cuts off the connection between the power input interface 21 and the battery in a bidirectional way through the bidirectional blocking circuit 24, so that the battery is protected and meanwhile reverse output of battery voltage is prevented.
In one embodiment of the present invention, the bidirectional blocking circuit 24 includes a first MOS transistor and a second MOS transistor, gates of the first MOS transistor and the second MOS transistor are connected to an output end of the charge management chip 22, a drain electrode of the first MOS transistor is connected to the power input interface 21, a source electrode of the first MOS transistor is connected to a source electrode of the second MOS transistor, and a drain electrode of the second MOS transistor is connected to the charge control circuit 23; the power supply path selection circuit 25 includes a first diode and a second diode, where an anode of the first diode is connected to the power input interface 21, an anode of the second diode is connected to the battery, and a cathode of the first diode and a cathode of the second diode are connected to a power supply terminal of the charge management chip 22.
It should be noted that, as shown in fig. 4, the bidirectional blocking circuit 24 is controlled by the charge management chip 22 to switch on and off, when the battery is fully charged, the bidirectional blocking circuit 24 is turned off to cut off the power output to the battery, so as to improve the service life of the battery, when the external power is not connected, the bidirectional blocking circuit 24 is turned off to prevent the battery power from being connected with the power input interface 21, prevent the power input interface 21 from being electrified and causing power waste or the power input interface 21 from being connected with a conductor in error to cause a short circuit, the bidirectional blocking circuit 24 is composed of two p_mos tubes relatively connected in series, wherein, the triode Q3 is a first MOS tube, the triode Q5 is a second MOS tube, and because of the connection relation between the source electrode and the drain electrode in the p_mos tube, the internal protection diodes are opposite in direction, the power supply between the battery and the power input interface 21 through the protection diodes can be effectively avoided, and when the first MOS tube and the second MOS tube are turned off, the circuit is turned on only when the first MOS tube and the second MOS tube receive the signal of the charge management chip 22, the control is more effective; in the electrical path selection circuit, the diodes D10 and D11 are respectively a first diode and a second diode, and due to the conduction characteristic of the diodes, when an external power supply is connected, the external power supply supplies power to the charge management chip 22, and when the external power supply is not connected, the battery is automatically switched to supply power to the charge management chip 22 so as to ensure the stable operation of the charge management chip 22, monitor the battery state in real time and send out a prompt, thereby ensuring the convenient use of the system.
In one embodiment of the present invention, the charge control circuit 23 includes a third MOS transistor, a fourth MOS transistor, and a first inductor, gates of the third MOS transistor and the fourth MOS transistor are respectively connected to one PWM signal end of the charge management chip 22, a drain of the third MOS transistor is connected to an output end of the bidirectional blocking circuit 24, a source of the third MOS transistor is connected to a first end of the first inductor, a drain of the fourth MOS transistor is connected to the first end of the first inductor, a source of the fourth MOS transistor is grounded, and an output end of the first inductor is connected to the battery.
It should be noted that, as shown in fig. 4, the MOS transistors Q6 and Q7 are a third MOS transistor and a fourth MOS transistor, the inductor L7 is a first inductor, the 23 rd and 26 th pins of the charging management chip 22 output PWM signals to control the third MOS transistor and the fourth MOS transistor, so as to realize charging and discharging control of the first inductor, change the interval and frequency of the PWM signals, and change the charging and discharging duration and frequency of the first inductor, so as to control the charging voltage and the charging current, and continuously regulate the PWM signals in combination with the feedback signals of the charging current detection circuit 28 and the battery voltage detection circuit 29, so that stable current charging of the battery can be realized, and the influence of external power supply fluctuation is avoided.
In an embodiment of the invention, the soil type field rapid identification system further comprises a communication module 5 and a man-machine interaction module 6, wherein the communication module 5 is connected with the main control module 1 and used for communication between the main control module 1 and the cloud platform, and the man-machine interaction module 6 is connected with the main control module 1 and used for operation of a user.
It should be noted that, as shown in fig. 5, through communication module 5, main control module 1 can transmit the soil data of gathering to cloud platform, and the user still can long-range transmission control signal simultaneously, and human-computer interaction module 6 can adopt button, display screen etc. and make things convenient for user's operation, and the field quick identification system of soil type can load to the field analysis case of soil, the field analysis case of soil still include the case main part and with case main part assorted epitheca, one side of the upper surface of case main part is provided with the sample and places the box, and the opposite side is operating panel, and operating panel is connected with human-computer interaction module 6 electricity, and during the use, place the soil profile sample in the sample and place the box, the sample is placed the box bottom and is provided with the light source group, sends near infrared light, realizes the reflection spectrum collection of soil profile sample.
The invention also provides a soil type field rapid identification method, which comprises the following steps:
making a sample of soil to be measured, and placing the soil profile sample in a sample placing box;
the user sends a sampling instruction to the main control module;
the main control module controls the light source driving circuit to drive the light source according to the setting, and the light source continuously emits near infrared light with different intensities according to the setting to irradiate the soil profile sample;
the temperature detection circuit transmits the temperature information to the main control module, the main control module compares the temperature information with a set threshold value, and if the temperature information is in a range to be compensated, the light source driving circuit is controlled to make a compensation signal, and the light source is regulated;
the digital micromirror controller collects the reflection information of the soil profile sample and transmits the reflection information to the main control module;
and the main control module forms a reflection spectrum curved surface according to the emission information, compares and matches the reflection spectrum curved surface with the spectrum curved surface in the data storage library, and identifies the soil type of the soil to be detected.
The data storage library stores spectrum curved surface information of different types of soil samples under experimental conditions, the main control module forms a curve according to infrared illumination and light reflectivity information, and curve information of a plurality of detection points is combined to form spectrum curved surface information; the temperature setting has a plurality of threshold ranges, and different compensation currents can be determined according to the corresponding ranges, so that the reflection spectrum information is more accurate.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (10)
1. A soil type field rapid identification system, comprising: the soil sample optical detection module (4) comprises a light source driving circuit (41), a digital micro-mirror controller (42), a photoelectric detector (43) and a sampling circuit (44), wherein the input end of the light source driving circuit (41) is connected with the power source module (2), the controlled end is connected with the main control module (1), the output end of the light source is connected with the light source so as to adjust the output current of the light source, the input end of the photoelectric detector (43) is connected with the digital micro-mirror controller (42) so as to convert a reflected light signal received by the digital micro-mirror controller (42) into an electric signal, the electric signal is transmitted to the main control module through the sampling circuit (44), the main control module is compared with set information to determine reflection spectrum information, and then the matrix type of soil to be detected is determined, and the temperature detection circuit (3) is connected with the main control module (1) and is used for transmitting instrument internal temperature information to the main control module (1).
2. The soil type field rapid identification system according to claim 1, wherein the light source driving circuit (41) comprises a voltage stabilizing circuit (411) and an output current control circuit (412), the input end of the voltage stabilizing circuit (411) is connected with the power module (2), the output end is connected with the input end of the output current control circuit (412), the controlled end of the output current control circuit (412) is connected with the main control module (1), and the output end is connected with the light source.
3. The soil type field rapid identification system according to claim 2, wherein the voltage stabilizing circuit (411) comprises a first power conversion chip and a switching value isolation circuit, an input end of the switching value isolation circuit is connected with the main control module (1), an output end of the switching value isolation circuit is connected with an enabling end of the first power conversion chip, an input end of the first power conversion chip is connected with the power module (2), and an output end of the first power conversion chip is connected with the output current control circuit (412); the output current control circuit (412) comprises a first current output chip, a power supply filter circuit, a first amplifying circuit and a current sampling circuit (44), the current sampling circuit (44) comprises a first sampling resistor and a first current sensing amplifier, a first input end of the first amplifying circuit is connected with an output end of the voltage stabilizing circuit (411) through the power supply filter circuit, an input end of the first amplifying circuit is connected with the main control module (1), an output end of the first amplifying circuit is connected with a controlled end of the first current output chip, the first sampling resistor is arranged between the light source and the ground, two input ends of the first current sensing amplifier are respectively connected with two ends of the first sampling resistor, and an output end of the first amplifying circuit is connected with a second input end of the first current output chip so as to realize accurate control of light source current.
4. The soil type field rapid identification system according to claim 1, wherein the sampling circuit (44) comprises a second amplifying circuit (441), a third amplifying circuit (442) and a first digital-to-analog conversion circuit (443), two output ends of the photodetector (43) are respectively connected with an input end of the first digital-to-analog conversion circuit (443) through the second amplifying circuit (441) and the third amplifying circuit (442), and an output end of the first digital-to-analog conversion circuit (443) is connected with the main control module (1).
5. The soil type field rapid identification system according to claim 1, wherein the power supply module (2) comprises a power supply conversion circuit and a charging circuit, the input end of the power supply conversion circuit is connected with a battery, the output end of the power supply conversion circuit is respectively connected with the main control module (1) and the soil sample light detection module (4), the input end of the charging circuit is suitable for being connected with an external power supply, and the output end of the charging circuit is connected with the battery.
6. The rapid soil type field identification system according to claim 5, wherein the charging circuit comprises a power input interface (21), a charge management chip (22), a charge control circuit (23), a bidirectional blocking circuit (24), a power supply path selection circuit (25), an input voltage detection circuit (26), an input current detection circuit (27), a charge current detection circuit (28) and a battery voltage detection circuit (29), the input of the bidirectional blocking circuit (24) is connected with the power input interface (21), the output is connected with the charge control circuit (23), a controlled end is connected with the charge management chip (22), the controlled end of the charge control circuit (23) is connected with the charge management chip (22), an output end is connected with the battery to realize control of charging current of the battery, the input end of the input voltage detection circuit (26) is connected with the power input interface (21), the output end of the input current detection circuit (27) is connected with the input end of the charge control circuit (23), the output end of the input current detection circuit (27) is connected with the charge management chip (22), the output end of the charge control chip (22) is connected with the charge management chip (22), the input end of the battery voltage detection circuit (29) is connected with the battery, the output end of the battery voltage detection circuit is connected with the charging management chip (22), the communication end of the charging management chip (22) is connected with the main control module (1), the first input end of the power supply path selection circuit (25) is connected with the power input interface (21), the second input end of the power supply path selection circuit is connected with the battery, and the output end of the power supply path selection circuit is connected with the power end of the charging management chip (22).
7. The soil type field rapid identification system according to claim 6, wherein the bidirectional blocking circuit (24) comprises a first MOS transistor and a second MOS transistor, gates of the first MOS transistor and the second MOS transistor are connected to an output end of the charge management chip (22), a drain electrode of the first MOS transistor is connected to the power input interface (21), a source electrode of the first MOS transistor is connected to a source electrode of the second MOS transistor, and a drain electrode of the second MOS transistor is connected to the charge control circuit (23); the power supply path selection circuit (25) comprises a first diode and a second diode, wherein the anode of the first diode is connected with the power input interface (21), the anode of the second diode is connected with the battery, and the cathode of the first diode and the cathode of the second diode are connected with the power end of the charging management chip (22).
8. The rapid soil type field identification system according to claim 6, wherein the charge control circuit (23) comprises a third MOS transistor, a fourth MOS transistor and a first inductor, gates of the third MOS transistor and the fourth MOS transistor are respectively connected with a PWM signal end of the charge management chip (22), a drain of the third MOS transistor is connected with an output end of the bidirectional blocking circuit (24), a source of the third MOS transistor is connected with a first end of the first inductor, a drain of the fourth MOS transistor is connected with the first end of the first inductor, a source of the fourth MOS transistor is grounded, and an output end of the first inductor is connected with the battery.
9. The soil type field rapid identification system according to any one of claims 1-8, further comprising a communication module (5) and a man-machine interaction module (6), wherein the communication module (5) is connected with the main control module (1) and is used for communication between the main control module (1) and a cloud platform, and the man-machine interaction module (6) is connected with the main control module (1) and is used for operation of a user.
10. A soil type field rapid identification method based on the soil type field rapid identification system according to any one of claims 1 to 9, characterized by comprising:
making a sample of soil to be measured, and placing the soil profile sample in a sample placing box;
the user sends a sampling instruction to the main control module;
the main control module controls the light source driving circuit to drive the light source according to the setting, and the light source continuously emits near infrared light with different intensities according to the setting to irradiate the soil profile sample;
the temperature detection circuit transmits the temperature information to the main control module, the main control module compares the temperature information with a set threshold value, and if the temperature information is in a range to be compensated, the light source driving circuit is controlled to make a compensation signal, and the light source is regulated;
the digital micromirror controller collects the reflection information of the soil profile sample and transmits the reflection information to the main control module;
and the main control module forms a reflection spectrum curved surface according to the emission information, compares and matches the reflection spectrum curved surface with the spectrum curved surface in the data storage library, and identifies the soil type of the soil to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311767222.1A CN117723511A (en) | 2023-12-21 | 2023-12-21 | Soil type field rapid identification system and analysis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311767222.1A CN117723511A (en) | 2023-12-21 | 2023-12-21 | Soil type field rapid identification system and analysis method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117723511A true CN117723511A (en) | 2024-03-19 |
Family
ID=90210454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311767222.1A Pending CN117723511A (en) | 2023-12-21 | 2023-12-21 | Soil type field rapid identification system and analysis method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117723511A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101017133A (en) * | 2006-11-14 | 2007-08-15 | 西北农林科技大学 | Soil water measuring instrument based on infrared radiation |
| CN101387605A (en) * | 2008-10-20 | 2009-03-18 | 中国农业大学 | Optical fiber agricultural land soil organic matter content rapid detector |
| CN106442387A (en) * | 2016-11-16 | 2017-02-22 | 江苏智石科技有限公司 | Soil component content detecting device based on photoelectric detection |
| CN106483093A (en) * | 2016-11-16 | 2017-03-08 | 江苏智石科技有限公司 | A kind of Content of Soil Component detection means based on rotation |
| US20170122889A1 (en) * | 2014-06-18 | 2017-05-04 | Texas Tech University System | Portable Apparatus for Soil Chemical Characterization |
| US20220390277A1 (en) * | 2021-06-01 | 2022-12-08 | Si-Ware Systems | Large spot size spectrometer |
| CN115562128A (en) * | 2022-11-03 | 2023-01-03 | 格瑞环保科技(深圳)有限公司 | Intelligent control system for multi-effect high-temperature overlapping type drying of garbage |
| CN117309816A (en) * | 2023-10-24 | 2023-12-29 | 希立仪器设备(广东)有限公司 | Quick identification system of soil non-excavation type navigator |
-
2023
- 2023-12-21 CN CN202311767222.1A patent/CN117723511A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101017133A (en) * | 2006-11-14 | 2007-08-15 | 西北农林科技大学 | Soil water measuring instrument based on infrared radiation |
| CN101387605A (en) * | 2008-10-20 | 2009-03-18 | 中国农业大学 | Optical fiber agricultural land soil organic matter content rapid detector |
| US20170122889A1 (en) * | 2014-06-18 | 2017-05-04 | Texas Tech University System | Portable Apparatus for Soil Chemical Characterization |
| CN106442387A (en) * | 2016-11-16 | 2017-02-22 | 江苏智石科技有限公司 | Soil component content detecting device based on photoelectric detection |
| CN106483093A (en) * | 2016-11-16 | 2017-03-08 | 江苏智石科技有限公司 | A kind of Content of Soil Component detection means based on rotation |
| US20220390277A1 (en) * | 2021-06-01 | 2022-12-08 | Si-Ware Systems | Large spot size spectrometer |
| CN115562128A (en) * | 2022-11-03 | 2023-01-03 | 格瑞环保科技(深圳)有限公司 | Intelligent control system for multi-effect high-temperature overlapping type drying of garbage |
| CN117309816A (en) * | 2023-10-24 | 2023-12-29 | 希立仪器设备(广东)有限公司 | Quick identification system of soil non-excavation type navigator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3488586A (en) | Frequency modulated light coupled data link | |
| KR101708388B1 (en) | Electronic management system for photovoltaic cells | |
| US5955885A (en) | Battery power supply device characteristic measuring apparatus and measuring method | |
| CN102778643B (en) | Equipment and method for measuring photovoltaic conversion characteristic parameters of photovoltaic solar battery | |
| CN102298110A (en) | Method and device for measuring electric property of solar cell | |
| CN202649111U (en) | Plant foliage array LED infrared spectrum detector | |
| CN102893264B (en) | Power points is followed the tracks of | |
| CN201653549U (en) | Multichannel optical power meter | |
| CN201766284U (en) | Light power monitoring circuit of digital light emitter | |
| CN117723511A (en) | Soil type field rapid identification system and analysis method | |
| CN110988627A (en) | Ultraviolet on-line remote real-time monitoring device for abnormal discharge of power transmission and transformation equipment | |
| CN109842086A (en) | Arc photosensor self checking method and device, arc protection equipment based on triangular wave driving source | |
| CN117309816B (en) | Quick identification system of soil non-excavation type navigator | |
| KR20220116769A (en) | Monitoring system and method for photovoltaic power facilities | |
| CN109946550B (en) | Device and its test method for testing laser source, detector, optical device | |
| CN117309816A (en) | Quick identification system of soil non-excavation type navigator | |
| CN114112314B (en) | Detection performance test method for multifunctional photoelectric detection system | |
| CN206710917U (en) | Device is found based on APC and the laser semiconductor material evidence of constant temperature intelligent control | |
| CN109932339B (en) | All-weather light environment self-adaptive crop growth detection device and method | |
| CN103245898A (en) | Switch cabinet local discharging real-time monitoring system based on oxygen sensor | |
| CN101266170A (en) | Method and apparatus for measuring multi-junction photovoltaic battery quantum efficiency | |
| KR20190021872A (en) | Aircraft warning light control system | |
| CN103698282B (en) | A kind of modulation LED light source driving circuit for plant growth information monitoring | |
| CN210519710U (en) | Irrigation monitoring equipment and system | |
| CN109946582B (en) | It is a kind of for test probe, the device of optical device and its test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |