CN215957085U - Electric drive seeding system circuit structure - Google Patents
Electric drive seeding system circuit structure Download PDFInfo
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- CN215957085U CN215957085U CN202122282019.8U CN202122282019U CN215957085U CN 215957085 U CN215957085 U CN 215957085U CN 202122282019 U CN202122282019 U CN 202122282019U CN 215957085 U CN215957085 U CN 215957085U
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Abstract
The application relates to an electrically driven seeding system circuit structure, include: the controller, first CAN bus, second CAN bus, first switching signal conditioning circuit and first PWM signal conditioning circuit. The controller is connected with a man-machine interaction machine of the sowing system through a first CAN bus and is used for receiving a power-on instruction and a sowing instruction sent by the man-machine interaction machine; the seeding system is also connected with a command channel of the seeding system through a second CAN bus and used for controlling the seeding system; the first switching signal conditioning circuit and the first PWM signal conditioning circuit are connected with a seed monitor of the seeding system and used for carrying out level conversion and shaping on grating signals sent by the seed monitor. In this application, through setting up the information when seed watch-dog control seed is sowed, the state that the seed watch-dog passed through grating signal representation seed whereabouts.
Description
Technical Field
The application relates to the technical field of driving circuits, in particular to a circuit structure of an electric-driven seeding system.
Background
The seeder among the prior art is mechanical chain drive formula structure, and the land wheel changes the rotational speed of speed change case axle into through the axle with the speed of traveling, and the rotation of axle is epaxial through chain drive to the disseminator, and the disseminator axle drives the seeding dish and carries out the work of sowing, various information when the seeder of mechanical linkage can't master the seed seeding.
SUMMERY OF THE UTILITY MODEL
For at least overcoming the problem of various information when the seeder of mechanical linkage can't master the seed seeding among the correlation technique to a certain extent, this application provides an electrically-driven seeding system circuit structure.
The scheme of the application is as follows:
an electrically driven seeding system circuit arrangement comprising:
the controller comprises a first CAN bus, a second CAN bus, a first switching signal conditioning circuit and a first PWM signal conditioning circuit;
the controller is connected with a man-machine interaction machine of the sowing system through the first CAN bus and is used for receiving a power-on instruction and a sowing instruction sent by the man-machine interaction machine;
the controller is also connected with a command channel of the sowing system through the second CAN bus and is used for controlling the sowing system;
the controller is also connected with a seed monitor of the sowing system through the first switch signal conditioning circuit and the first PWM signal conditioning circuit and is used for carrying out level conversion and shaping on grating signals sent by the seed monitor.
Preferably, in an implementation manner of the present application, the method further includes: a second PWM signal conditioning circuit;
the controller is also connected with a land wheel of the sowing system through the second PWM signal conditioning circuit and is used for carrying out level conversion and shaping on a speed signal sent by the land wheel.
Preferably, in an implementation manner of the present application, the method further includes: a second switching signal conditioning circuit;
the controller is also connected with a lifting component of the sowing system through the second switch signal conditioning circuit and is used for carrying out level conversion and shaping on a lifting signal sent by the lifting component.
Preferably, in an implementation manner of the present application, the method further includes: the input power circuit, the low dropout linear regulator and the buck conversion circuit;
the input power supply circuit includes: an anti-reverse diode, a support capacitor and a wake-up switch;
the input power supply circuit is connected to an external 12V voltage power supply to perform filtering and anti-reversion on the external 12V voltage power supply;
the input power supply circuit is respectively connected with the first CAN bus, the low-dropout linear voltage regulator and the buck conversion circuit;
the low dropout regulator is used for reducing a12V voltage power supply in the input power supply circuit into a 3V voltage power supply and a 5V voltage power supply;
the buck conversion circuit is used for reducing the 12V voltage power supply in the input power supply circuit into an 8V voltage power supply.
Preferably, in an implementation manner of the present application, the method further includes: a high-side drive circuit;
the high-side driving circuit is connected with the input power circuit;
the controller is also connected with a relay in an electricity utilization loop of the seeding system through the high-side driving circuit and is used for judging the state of the relay.
Preferably, in an implementation manner of the present application, the method further includes: an analog signal conditioning circuit;
the controller is also connected with an air compression component of the seeding system through the analog signal conditioning circuit and is used for carrying out amplitude conversion and filtering on a negative pressure signal sent by the air compression component.
Preferably, in an implementation manner of the present application, the controller is further connected to the input power circuit, the low dropout regulator and the buck converter circuit through the analog signal conditioning circuit, and is configured to monitor an operation state of the input power circuit, the low dropout regulator and the buck converter circuit.
Preferably, in an implementation manner of the present application, the method further includes: the device comprises a memory, a real-time clock chip and a button battery;
the controller is also connected with the memory and is connected with the button battery through the real-time clock chip;
the real-time clock chip is used for providing real-time for the controller;
the button battery is used for providing power for the controller when the controller is not connected with the power supply;
the controller is also used for storing the working record in the memory according to the real-time provided by the real-time clock chip.
The technical scheme provided by the application can comprise the following beneficial effects: the electric drive seeding system circuit structure in this application includes: the controller, first CAN bus, second CAN bus, first switching signal conditioning circuit and first PWM signal conditioning circuit. The controller is connected with a man-machine interaction machine of the sowing system through a first CAN bus and is used for receiving a power-on instruction and a sowing instruction sent by the man-machine interaction machine; the seeding system is also connected with a command channel of the seeding system through a second CAN bus and used for controlling the seeding system; the first switching signal conditioning circuit and the first PWM signal conditioning circuit are connected with a seed monitor of the seeding system and used for carrying out level conversion and shaping on grating signals sent by the seed monitor. In this application, through setting up the information when seed watch-dog control seed is sowed, the state that the seed watch-dog passed through grating signal representation seed whereabouts.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic diagram of an electrical circuit configuration of an electrically driven sowing system provided in one embodiment of the present application;
fig. 2 is a schematic circuit diagram of an electrically driven sowing system according to another embodiment of the present application.
Reference numerals: a controller-1; a first CAN bus-2; a second CAN bus-3; a first switching signal conditioning circuit-4; a first PWM signal conditioning circuit-5.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
An electrically driven sowing system circuit structure, referring to fig. 1, comprises:
the controller comprises a controller 1, a first CAN bus 2, a second CAN bus 3, a first switching signal conditioning circuit 4 and a first PWM signal conditioning circuit 5;
the controller 1 is connected with a human-computer interaction machine of the sowing system through a first CAN bus 2 and is used for receiving a power-on instruction and a sowing instruction sent by the human-computer interaction machine;
the controller 1 is also connected with a command channel of the sowing system through a second CAN bus 3 and is used for controlling the sowing system;
the controller 1 is further connected to a seed monitor of the sowing system through a first switching signal conditioning circuit 4 and a first PWM signal conditioning circuit 5, and is configured to perform level conversion and shaping on a grating signal sent by the seed monitor.
In this embodiment, the MCU of the controller 1 is a 32-bit single chip microcomputer, which is responsible for monitoring and controlling the operation state of the whole circuit board, and calculating and controlling the information and operation state of the external sensors.
Preferably, the controller 1 in this embodiment also provides a 4-pin programmer socket.
The first CAN bus 2 is connected with a man-machine interaction machine of a seeding system cab and is a command channel for a user to operate the controller 1. The second CAN bus 3 is connected to the sowing system and is a command channel for the controller 1 to operate the sowing system.
The grating signal represents the state of seed falling, which is usually in PWM form or in switching signal form, so in this embodiment the controller 1 is connected to the seed monitor of the sowing system through the first switching signal conditioning circuit 4 and the first PWM signal conditioning circuit 5 at the same time. The first switching signal conditioning circuit 4 and the first PWM signal conditioning circuit 5 have the functions of performing level conversion on the grating signal, and converting an 8V level into a 5V level; secondly, the raster signal is shaped to eliminate possible distortion.
The controller 1 can calculate the number of the seeded grains and other related information through the received grating signal, and the technical means is conventional operation in the prior art, and is not described herein again.
The electric-driven seeding system circuit structure in some embodiments, referring to fig. 2, further includes: a second PWM signal conditioning circuit;
the controller 1 is also connected with a land wheel of the sowing system through a second PWM signal conditioning circuit and is used for carrying out level conversion and shaping on a speed signal sent by the land wheel.
The speed signal is from the ground wheel of the planter, which is typically in the form of PWM. Therefore, the controller 1 is connected to the ground wheel of the sowing system through the second PWM signal conditioning circuit in this embodiment. The second PWM signal conditioning circuit is used for carrying out level conversion on the speed signal; secondly, the speed signal is shaped, and possible distortion is eliminated.
The controller 1 can control the seeding speed and calculate the related information such as the seeding mileage through the received speed signal, and the technical means is the conventional operation in the prior art, which is not described herein again.
The electric-driven seeding system circuit structure in some embodiments, referring to fig. 2, further includes: a second switching signal conditioning circuit;
the controller 1 is also connected with a lifting component of the sowing system through a second switching signal conditioning circuit and is used for carrying out level conversion and shaping on a lifting signal sent by the lifting component.
The lift signal comes from the lift member of the planter, which is typically in the form of a switch. Therefore, the controller 1 is connected to the lifting component of the sowing system through the second switch signal conditioning circuit in this embodiment. The second switch signal conditioning circuit is used for carrying out level conversion on the lifting signal; secondly, the lifting signal is shaped, and possible distortion is eliminated.
The controller 1 can judge whether the seeder is in a turning state or not through the received lifting signal, so as to control the seeding behavior, and the technical means is the conventional operation in the prior art, and is not described herein any more.
The electric-driven seeding system circuit structure in some embodiments, referring to fig. 2, further includes: the input power circuit, the low dropout linear regulator and the buck conversion circuit;
the input power supply circuit includes: an anti-reverse diode, a support capacitor and a wake-up switch;
the input power circuit is connected with an external 12V voltage power supply to filter and prevent reverse of the external 12V voltage power supply;
the input power circuit is respectively connected with the first CAN bus 2, the low dropout linear regulator and the buck conversion circuit;
the low dropout linear regulator is used for reducing a12V voltage power supply in the input power supply circuit into a 3V voltage power supply and a 5V voltage power supply;
the buck conversion circuit is used for reducing a12V voltage power supply input into the power supply circuit into an 8V voltage power supply.
The input power supply of the circuit board is 12V, and in order to prevent a user from reversely connecting the positive and negative electrode wire harnesses of the power supply, a reverse prevention diode is added in the input power supply circuit; in order to avoid instantaneous drop of an input power supply, enough supporting capacitors are added into a circuit; in order to avoid overlarge dormant power consumption of the circuit board, a wake-up switch is added in the circuit.
The electrifying process comprises the following steps: a user clicks a power-on switch in a man-machine interaction machine in a cab, the man-machine interaction machine sends a power-on command to the controller 1 through the first CAN bus 2, and the controller 1 wakes up the power switch through a hard wire after receiving the power-on command, so that power-on is completed.
When the power is off, the control program can close the power switch through a hard wire.
In this embodiment, there are 5 output power sources, wherein VCC5V and VCC3V3 supply power to the inside of the circuit board, and VBB5V, VAA8V and VAA12V supply power to the external sensors. The internal and external power supplies are independently opened, so that mutual interference and damage of the power supplies can be avoided.
VCC5V, VCC3V3, VBB5V use low dropout linear regulator LDO switching because VCC5V, VCC3V3, VBB5V have smaller load power requirements and higher voltage stability requirements.
The VAA8V employs a BUCK conversion circuit BUCK conversion because the load power of VAA8V is large and the voltage stability requirement is low.
The VAA12V is obtained only by filtering and anti-reflection of an external input power supply, because the power supply range of a sensor docked with the VAA12V is wide and the requirement is not high.
The electric-driven seeding system circuit structure in some embodiments, referring to fig. 2, further includes: a high-side drive circuit;
the high-side driving circuit is connected with the input power circuit;
the controller 1 is also connected with a relay in an electricity circuit of the seeding system through a high-side driving circuit and used for judging the state of the relay.
The high-side driving circuit is used for driving an external relay, and can judge whether the driving circuit is short-circuited or not and whether the device is over-temperature or not besides providing driving current of more than 100 mA. The external relay may be a relay in the power circuit of the seed planting system.
The electric-driven seeding system circuit structure in some embodiments, referring to fig. 2, further includes: an analog signal conditioning circuit;
the controller 1 is also connected with an air compression component of the seeding system through an analog signal conditioning circuit and is used for carrying out amplitude conversion and filtering on a negative pressure signal sent by the air compression component.
The negative pressure signal is from the air compression component of the planter, which is typically an analog waveform. The controller 1 in this embodiment is connected to the air compression component of the seed planting system through an analog signal conditioning circuit. The analog signal conditioning circuit has the functions of amplitude conversion on the analog signal and filtering on the analog signal.
The controller 1 can judge whether the seeder is in a turning state or not through the received lifting signal, so as to control the seeding behavior, and the technical means is the conventional operation in the prior art, and is not described herein any more.
In some embodiments of the electric-driven seeding system circuit structure, referring to fig. 2, the controller 1 is further connected to the input power circuit, the low dropout regulator and the buck converter circuit through the analog signal conditioning circuit, and is configured to monitor the operation states of the input power circuit, the low dropout regulator and the buck converter circuit.
The processor collects the voltage of the input power circuit, the low dropout linear voltage regulator and the voltage reduction type conversion circuit to monitor the running state of the power supply and assist in correcting the signal precision output by the analog sensor.
The electric-driven seeding system circuit structure in some embodiments, referring to fig. 2, further includes: the device comprises a memory, a real-time clock chip and a button battery;
the controller 1 is also connected with a memory and is connected with a button battery through a real-time clock chip;
the real-time clock chip is used for providing real-time for the controller 1;
the button battery is used for providing power for the controller 1 when the controller 1 is not connected with the power supply;
the controller 1 is also used to store the working record in the memory according to the real-time provided by the real-time clock chip.
The memory includes: nor Flash memory and EEPROM memory. The Nor Flash memory is used for storing seeding mode configuration information and historical seeding quantity, and the EEPROM memory is used for storing fault information generated in the seeding process.
The real-time clock chip is an RTC real-time clock chip, and the button battery is a BAT button battery.
Their combination is used for controller 1 to obtain current time and record together when the record seeding quantity and fault information, even seeder system outage restarts, seeding controller 1 still can calculate the seeding time of actual emergence according to the real-time clock, reachs accurate seeding efficiency, also can monitor simultaneously and track the seeding action, still is convenient for retrieve the seeding data that has historical moment and does the comparison guidance for follow-up seeding.
The button cell can be forbidden and charged simultaneously during the power-on work of the circuit board, which is beneficial to prolonging the service life.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (8)
1. An electrically driven seeding system circuit arrangement, comprising:
the controller comprises a first CAN bus, a second CAN bus, a first switching signal conditioning circuit and a first PWM signal conditioning circuit;
the controller is connected with a man-machine interaction machine of the sowing system through the first CAN bus and is used for receiving a power-on instruction and a sowing instruction sent by the man-machine interaction machine;
the controller is also connected with a command channel of the sowing system through the second CAN bus and is used for controlling the sowing system;
the controller is also connected with a seed monitor of the sowing system through the first switch signal conditioning circuit and the first PWM signal conditioning circuit and is used for carrying out level conversion and shaping on grating signals sent by the seed monitor.
2. The electrically driven seeding system circuit arrangement according to claim 1, further comprising: a second PWM signal conditioning circuit;
the controller is also connected with a land wheel of the sowing system through the second PWM signal conditioning circuit and is used for carrying out level conversion and shaping on a speed signal sent by the land wheel.
3. The electrically driven seeding system circuit arrangement according to claim 1, further comprising: a second switching signal conditioning circuit;
the controller is also connected with a lifting component of the sowing system through the second switch signal conditioning circuit and is used for carrying out level conversion and shaping on a lifting signal sent by the lifting component.
4. The electrically driven seeding system circuit arrangement according to claim 1, further comprising: the input power circuit, the low dropout linear regulator and the buck conversion circuit;
the input power supply circuit includes: an anti-reverse diode, a support capacitor and a wake-up switch;
the input power supply circuit is connected to an external 12V voltage power supply to perform filtering and anti-reversion on the external 12V voltage power supply;
the input power supply circuit is respectively connected with the first CAN bus, the low-dropout linear voltage regulator and the buck conversion circuit;
the low dropout regulator is used for reducing a12V voltage power supply in the input power supply circuit into a 3V voltage power supply and a 5V voltage power supply;
the buck conversion circuit is used for reducing the 12V voltage power supply in the input power supply circuit into an 8V voltage power supply.
5. The electrically driven seeding system circuit arrangement according to claim 4, further comprising: a high-side drive circuit;
the high-side driving circuit is connected with the input power circuit;
the controller is also connected with a relay in an electricity utilization loop of the seeding system through the high-side driving circuit and is used for judging the state of the relay.
6. The electrically driven seeding system circuit arrangement according to claim 4, further comprising: an analog signal conditioning circuit;
the controller is also connected with an air compression component of the seeding system through the analog signal conditioning circuit and is used for carrying out amplitude conversion and filtering on a negative pressure signal sent by the air compression component.
7. The electrically driven seeding system circuit arrangement of claim 6, wherein the controller is further connected to the input power circuit, the low dropout regulator and the buck converter circuit via the analog signal conditioning circuit for monitoring the operational status of the input power circuit, the low dropout regulator and the buck converter circuit.
8. The electrically driven seeding system circuit arrangement according to claim 1, further comprising: the device comprises a memory, a real-time clock chip and a button battery;
the controller is also connected with the memory and is connected with the button battery through the real-time clock chip;
the real-time clock chip is used for providing real-time for the controller;
the button battery is used for providing power for the controller when the controller is not connected with the power supply;
the controller is also used for storing the working record in the memory according to the real-time provided by the real-time clock chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122282019.8U CN215957085U (en) | 2021-09-18 | 2021-09-18 | Electric drive seeding system circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122282019.8U CN215957085U (en) | 2021-09-18 | 2021-09-18 | Electric drive seeding system circuit structure |
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| Publication Number | Publication Date |
|---|---|
| CN215957085U true CN215957085U (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122282019.8U Active CN215957085U (en) | 2021-09-18 | 2021-09-18 | Electric drive seeding system circuit structure |
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| CN (1) | CN215957085U (en) |
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- 2021-09-18 CN CN202122282019.8U patent/CN215957085U/en active Active
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