CN209167864U - A kind of agricultural machinery job parameter acquisition device - Google Patents

Abstract

The utility model discloses a kind of agricultural machinery job parameter acquisition device, including master cpu unit, pressure unit, sensor unit and data communication unit, realize the acquisition of large-scale agricultural machinery job parameter, the data measured host computer can be uploaded to be managed collectively, pass through GPS positioning system module, it provides in real time and positions longitude and latitude data accurately to carry out agricultural machinery working regional location positioning, each sensor module can be with the working condition of real-time detection agricultural machinery working agro-farming utensil, and field operation situation can be remotely checked by camera module, not only realize the automation of parameter acquisition unit, process of the centre without any required human intervention, and good impetus is played for intelligent agriculture in future, with high value of practical and promotional value.

Description

A kind of agricultural machinery job parameter acquisition device

Technical field

The utility model relates to agricultural machinery working parameter collection fields, and in particular to a kind of agricultural machinery job parameter acquisition dress It sets.

Background technique

Country greatly develops wisdom agricultural in recent years, it is desirable that improves Agricultural Informationization Level comprehensively.Agricultural management department mentions Out, requirement can carry out information system management to agricultural machinery first, realize onlineization, digitization, high-efficiency of management and the service of agricultural machinery just The elementary object of victoryization.And present data collector carries out needing technical staff with computer shape when parameter acquisition mostly Shadow not from, it is very troublesome, for problems such as the acquisition, processing, display, storage and the wireless transmissions that solve agricultural machinery working parameter, and Facilitate long-range real time inspection field operation situation, it would be highly desirable to propose a kind of agricultural machinery job parameter acquisition device.

Utility model content

The utility model discloses a kind of agricultural machinery job parameter acquisition device, to realize large-scale agricultural machinery operation The acquisition of parameter provides accurate location information by GPS positioning module to carry out agricultural machinery working regional location positioning, and will survey The data obtained are uploaded to host computer and are managed collectively, and play good impetus for intelligent agriculture in future.

The utility model, which is that the following technical solution is employed, to be realized: a kind of agricultural machinery job parameter acquisition device, packet The dust cover for including bottom plate and being arranged on bottom plate, is provided with master cpu in dust cover, the parameter acquisition devices further include with it is main It controls the connected pressure unit of CPU, sensor unit, GPS positioning module, camera module, serial ports panel module and SD card and stores mould Block, the master cpu use STM32F103ZET6 high-speed microprocessor, are realized and are communicated by SIM900A module and host computer；

The pressure unit includes power module and the LM2596 voltage reduction module being connected with power module；The sensor Unit includes displacement sensor, tension sensor and rotary encoder, and institute's displacement sensors are mounted on the tail portion of agricultural machinery, is used HG-C1200 long distance and high precision laser displacement sensor；The tension sensor is mounted between agricultural machinery and tractor, is used TX_LS1 type strain-type load tension sensor, to acquire the pulling force information of agricultural machinery；The rotary encoder uses E6B2- CWZ6C type high-precision rotary encoder, is mounted on the main rotary shaft of two land wheel of agricultural machinery；The revolving speed of land wheel is converted into pulse letter Number input master cpu, the pulling force of agricultural machinery and the rotary speed parameter of land wheel are acquired by tension sensor and rotary encoder, passes through position The working condition of displacement sensor real-time detection agricultural machinery working agro-farming utensil realizes the acquisition of agricultural machinery working parameter and the interaction of data With it is shared；

It is fixed to carry out agricultural machinery working regional location that the GPS positioning module provides accurately positioning longitude and latitude data in real time Position, the camera module use OV7670 camera, are timed candid photograph to operation field, realize long-range real time inspection scene Handling situations, the serial ports panel module uses 7 cun of RGB capacitance touch screens, realizes the real-time display function of system data, described SIM900A is mounted on above agricultural machinery, convenient for the transmission of data, constitutes GPRS radio communication circuit, by single-chip microcontroller treated number According to host computer server is sent to, the SD card memory module realizes the mass storage of data, in order to avoid because non-technical reason occurs The loss of data, serial ports panel module and SD card memory module are mounted on beside agricultural machinery steering wheel, convenient for checking serial ports screen data, side Just the taking-up of SD card.

Further, the LM2596 voltage reduction module includes LM2596, capacitor C1, C2, inductance L1 and voltage-stabiliser tube Z1, institute No. 1 pin for stating LM2596 is connected by capacitor C1 with No. 5 pins, and No. 3 pins and No. 5 pins are grounded, and No. 2 pins pass through steady Pressure pipe Z1 ground connection, No. 2 pin output ends are connected by inductance L1 with capacitor C2, and the other end ground connection of capacitor C2 overcomes traditional resistance Anti- regulative mode limitation, innovation are depressured using the capacitive reactance ratio of C1 and C2, and the heat dissipation of circuit is carried out using inductance L1, is realized Effective energy conservation.

Further, the GPS positioning module is mounted at the top of agricultural machinery, including GPS opens circuit and GPS control circuit, It includes switch S3, resistance R2, R3 and R4 and capacitor C3 and transistor T301, resistance R4 and switch S3 that the GPS, which opens circuit, Be connected in series, concatenated one end is connected with power Vcc, and the concatenated other end is connected with the GPS_ON pin of master cpu, resistance R4 and The both ends of switch S3 are parallel with the common end of capacitor C3, switch S3 and capacitor C3 through the base stage phase of resistance R2 and transistor T301 Even, the base stage of transistor T301 is grounded by resistance R3, and the emitter ground connection of transistor T301, collector is hanging, the GPS control Circuit processed includes XS401 chip, and No. 1 pin and No. 19 pins of XS401 chip connect power Vcc, and No. 7 pins and No. 9 pins connect Ground is connected with capacitor C5 and C6 in parallel, No. 13 pins and No. 12 pins of XS401 chip between No. 20 pins and No. 12 pins It is connected and is grounded, No. 15 pins and No. 6 pins of XS401 chip are corresponding is drawn with No. 19 pins of master cpu and No. 18 Foot is connected, and No. 3 pins of XS401 chip are connected with the collector of a triode Q2, the base stage of triode Q2 pass through resistance R5 and The GPS_RST of master cpu is connected, three branches of emitter point of triode Q2, a grounding, and a branch passes through switch S5 and diode D1 connects power Vcc, and another way connects power Vcc by capacitor C4 and resistance R6, due to the starting of GPS positioning module The regular hour is needed, and all schemes can all select to wait this period, the GPS that devises of this programme innovation opens electricity Road, can generate a low level not less than the 100ms time to wake up GPS positioning module rapidly when by key pressing, to subtract Opening time when people's use device is lacked, GPS_ON is directly connected to single-chip microcontroller, and LOT foot can not connect, if what is generated is LOT is just connect the GPS_ON foot that next identical GPS opens circuit by the low level of 200 milliseconds of time, can also be by process control The unlatching of GPRS module.

Further, since rotary encoder is mounted on driving shaft, driving shaft can be deviateed because of centrifugal force, causes to turn Speed is surveyed inaccurate, so a spring shim is set between the rotary encoder and driving shaft, to remove centrifugal force to rotation The influence of encoder.

Further, vibration is very severe when tractor is run, and the data of such sensor acquisition will be unstable, In order to guarantee the stability of data transmission, the tension sensor is arranged between tractor and agricultural machinery by foil gauge, to subtract Light vibration.

Compared with prior art, it the advantages of the utility model and has the active effect that

The agricultural machinery working parameter acquisition devices that the utility model is proposed realize large-scale agricultural machinery job parameter Acquisition, the data measured can be uploaded to host computer and be managed collectively, pass through GPS positioning system module, in real time provide Position longitude and latitude data accurately to carry out agricultural machinery working regional location positioning, each sensor module can be made with real-time detection agricultural machinery The working condition of industry agro-farming utensil, and field operation situation can be remotely checked by camera module, not only realize parameter The automation of collector, the intermediate process without any required human intervention, and played well for intelligent agriculture in future Impetus has high value of practical and promotional value.

Detailed description of the invention

Fig. 1 is the functional block diagram of parameter acquisition devices described in the utility model embodiment；

Fig. 2 is master cpu and its peripheral circuit schematic diagram；

Fig. 3 is reduction voltage circuit schematic diagram；

Fig. 4 is that GPS module opens circuit diagram；

Fig. 5 is GPS module control circuit schematic diagram.

Specific embodiment

In order to which the above objects, features, and advantages of the utility model are more clearly understood, with reference to the accompanying drawing and Embodiment is described further the utility model.It should be noted that in the absence of conflict, embodiments herein and Feature in embodiment can be combined with each other.

As shown in Figure 1, a kind of agricultural machinery job parameter acquisition device, including bottom plate and is arranged in dust-proof on bottom plate It covers, is provided with master cpu in dust cover, the parameter acquisition devices further include the pressure unit being connected with master cpu, sensor Unit, GPS positioning module, camera module, serial ports panel module and SD card memory module, the master cpu pass through SIM900A mould Block and host computer, which are realized, to be communicated, and the pressure unit includes power module and the LM2596 being connected with power module decompression mould Block, the LM2596 voltage reduction module are used supply voltage is reduced to 5V for system, and the sensor unit includes that displacement passes Sensor, tension sensor and rotary encoder, institute's displacement sensors are passed using HG-C1200 long distance and high precision laser displacement Sensor is mounted on the tail portion of agricultural machinery, because the laser that displacement sensor issues is along straightline propagation, laser issuing side and laser Should be parallel to the ground and install in the same plane, so displacement sensor is mounted on two car light of agricultural machinery rear portion in test side Intermediate and parallel to the ground, the movement of agricultural machinery causes the resistance variations of potentiometer mobile terminal, so that the misalignment of agricultural machinery is obtained, The tension sensor uses TX_LS1 type strain-type load tension sensor, is mounted between agricultural machinery and tractor, to adopt Collect the pulling force information of agricultural machinery, the rotary encoder uses E6B2-CWZ6C type high-precision rotary encoder, is mounted on agricultural machinery two On the main rotary shaft of land wheel, the revolving speed of land wheel is converted into pulse signal input master cpu, is compiled by tension sensor and rotation The pulling force of code device acquisition agricultural machinery and the rotary speed parameter of land wheel, pass through the work of displacement sensor real-time detection agricultural machinery working agro-farming utensil Make state, realize the acquisition of agricultural machinery working parameter and the interaction of data and shares.

In the present solution, the master cpu uses STM32F103ZET6 high-speed microprocessor, realize to data sampling and processing and The unified management of transmission, each section circuit connecting relation such as Fig. 2-5, Fig. 3 are LM2596 reduction voltage circuit, the output electricity of custom circuit Mostly setting is adjusted using resistance in pressure, and what is utilized is that impedance is adjusted, and resistance decompression has biggish power consumption and exists On resistance, and therefore electric current can be obstructed, at the same time agricultural machinery carry 24V battery consumption can also accelerate, this be we not Want the case where seeing, this programme is depressured by the capacitive reactance ratio of creative utilization two capacitors of C1 and C2, carries out electricity using inductance The heat dissipation on road, very energy saving, the decompression suitable for carrying power supply is handled.Fig. 4 is that GPS opens circuit, the starting of GPS positioning module The regular hour is needed, almost everyone can select to wait this period, and the present apparatus opens electricity by innovative design GPS Road, the low level that no less than 100 milliseconds of time can be generated when by key pressing wake up GPS positioning module rapidly, thus Reducing opening time when people's use device, GPS_ON is directly connected to single-chip microcontroller, and LOT foot can not connect, if generate It is the low level of 200 milliseconds of time, LOT is just connect into the GPS_ON foot that next identical GPS opens circuit, it can also be by program control The unlatching of GPRS module processed is realized by the efficient data processing function of STM32F103ZET6 high-speed microprocessor to agricultural machinery working Acquiring and handling and data are sent to host computer in real time for parameter interacts shared function.

It is fixed to carry out agricultural machinery working regional location that the GPS positioning module provides accurately positioning longitude and latitude data in real time Position, the camera module use OV7670 camera, are timed candid photograph to operation field, realize long-range real time inspection scene Handling situations, the serial ports screen use 7 cun of RGB capacitance touch screens, realize the real-time display function of system data, the mobile phone mould Block uses SIM900A mobile module, is mounted on above agricultural machinery, convenient for the transmission of data, constitutes GPRS radio communication circuit, will be single Piece machine treated data are sent to host computer server, the SD card memory module realize the mass storage of data, Yi Mianyin The loss of data occurs for non-technical reason, and serial ports panel module and SD card memory module are mounted on beside agricultural machinery steering wheel, convenient for looking into It sees serial ports screen data, facilitates the taking-up of SD card.

In the present solution, tractor and agricultural machinery work in the ground, electrostatic is generated to prevent dust from falling on single-chip microcontroller, it will be single Piece machine etc. is encapsulated in a dust cover, to play dust-proof effect；In addition, vibration is very severe when tractor is run, this The data of sample sensor acquisition will be unstable, in order to guarantee the stability of data transmission, is arranged around tension sensor and answers Become piece, to mitigate vibration；Since rotary encoder is mounted on driving shaft, driving shaft can be deviateed because of centrifugal force, cause to turn Speed is surveyed inaccurate, so a spring shim is set between rotary encoder and driving shaft, to remove centrifugal force to rotary coding The influence of device；Each module is unaffected independently of each other in the acquisition device, and fully connected topology is used between various sensors, Improve the information flow-rate distribution on route.

This programme has accomplished parameter acquisition equipment to be mounted on agricultural machinery and implement, can voluntarily acquire, and handles, and shows, sends Data, centre do not need accompanying and attending to for any technical staff, the data of acquisition are uploaded to host computer and are managed collectively, are passed through GPS positioning module provides position longitude and latitude data accurately to carry out agricultural machinery working regional location positioning, sensor unit in real time The working condition of real-time detection agricultural machinery working agro-farming utensil, and field operation feelings can be remotely checked by camera module Condition plays good impetus for intelligent agriculture in future, has high value of practical and promotional value.

The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent The equivalent embodiment of variation is applied to other fields, but all without departing from the content of the technical scheme of the utility model, according to this reality With novel technical spirit any simple modification, equivalent variations and remodeling to the above embodiments, it is practical new to still fall within this The protection scope of type technical solution.

Claims (5)

1. a kind of agricultural machinery job parameter acquisition device, which is characterized in that including bottom plate and the dust cover that is arranged on bottom plate, Master cpu is provided in dust cover, the parameter acquisition devices further include the pressure unit being connected with master cpu, sensor list Member, GPS positioning module, camera module, serial ports panel module and SD card memory module, the master cpu use STM32F103ZET6 high-speed microprocessor is realized by SIM900A module and host computer and is communicated；

The pressure unit includes power module and the LM2596 voltage reduction module being connected with power module, to provide suitably Voltage；The sensor unit includes displacement sensor, tension sensor and rotary encoder, and institute's displacement sensors are mounted on The tail portion of agricultural machinery, using HG-C1200 long distance and high precision laser displacement sensor, to acquire the displacement information of agricultural machinery；It is described Tension sensor is mounted between agricultural machinery and tractor, using TX_LS1 type strain-type load tension sensor, to acquire agriculture The pulling force information of machine；The rotary encoder uses E6B2-CWZ6C type high-precision rotary encoder, is mounted on two land wheel of agricultural machinery Main rotary shaft on；

The GPS positioning module provides in real time positions longitude and latitude data accurately to carry out agricultural machinery working regional location positioning, institute Camera module is stated using OV7670 camera, operation field is captured；The serial ports panel module uses RGB capacitance touch Screen, the SIM900A are mounted on above agricultural machinery, and serial ports panel module and SD card memory module are mounted on beside agricultural machinery steering wheel.

2. agricultural machinery job parameter acquisition device according to claim 1, it is characterised in that: the LM2596 is depressured mould Block includes that No. 1 pin of LM2596, capacitor C1, C2, inductance L1 and voltage-stabiliser tube Z1, the LM2596 pass through capacitor C1 and No. 5 Pin is connected, and No. 3 pins and No. 5 pins are grounded, and No. 2 pins are grounded by voltage-stabiliser tube Z1, and No. 2 pin output ends pass through inductance L1 is connected with capacitor C2, the other end ground connection of capacitor C2.

3. agricultural machinery job parameter acquisition device according to claim 1 or 2, it is characterised in that: the GPS positioning mould Block is mounted at the top of agricultural machinery, including GPS opens circuit and GPS control circuit, and it includes switch S3, resistance that the GPS, which opens circuit, R2, R3 and R4 and capacitor C3 and transistor T301, resistance R4 are connected in series with switch S3, concatenated one end and power Vcc phase Even, the concatenated other end is connected with the GPS_ON pin of master cpu, and the both ends of resistance R4 and switch S3 are parallel with capacitor C3, opens The common end for closing S3 and capacitor C3 is connected through resistance R2 with the base stage of transistor T301, and the base stage of transistor T301 passes through resistance R3 Ground connection, the emitter ground connection of transistor T301, collector is hanging, and the GPS control circuit includes XS401 chip, XS401 chip No. 1 pin and No. 19 pins connect power Vcc, No. 7 pins and No. 9 pins ground connection connect between No. 20 pins and No. 12 pins There are capacitor C5 and C6 in parallel, No. 13 pins of XS401 chip are connected and are grounded with No. 12 pins, and No. 15 of XS401 chip are drawn Foot and No. 6 pins are corresponding is connected with No. 19 pins of master cpu and No. 18 pins, No. 3 pins of XS401 chip and one The collector of triode Q2 is connected, and the base stage of triode Q2 is connected by resistance R5 with the GPS_RST of master cpu, triode Q2 Emitter point three branches, a grounding, a branch connects power Vcc, another way by switch S5 and diode D1 Power Vcc is connect by capacitor C4 and resistance R6.

4. agricultural machinery job parameter acquisition device according to claim 3, it is characterised in that: the rotary encoder with A spring shim is provided between driving shaft.

5. agricultural machinery job parameter acquisition device according to claim 4, it is characterised in that: the tension sensor is logical Overstrain piece is arranged between tractor and agricultural machinery.