CN117627797A - Flameout circuit and flameout method for agricultural machinery when meeting resistance - Google Patents
Flameout circuit and flameout method for agricultural machinery when meeting resistance Download PDFInfo
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- CN117627797A CN117627797A CN202311467245.0A CN202311467245A CN117627797A CN 117627797 A CN117627797 A CN 117627797A CN 202311467245 A CN202311467245 A CN 202311467245A CN 117627797 A CN117627797 A CN 117627797A
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Abstract
The utility model relates to the technical field of automatic driving of agricultural machinery, in particular to an agricultural machinery flameout circuit and flameout method, wherein the circuit comprises an agricultural machinery key gate circuit, a signal latch circuit, an agricultural machinery flameout circuit and a micro switch. Under the condition that the parking flameout function of the navigation system fails, the vehicle can still stop when meeting flameout, and the safety performance of the agricultural machinery is improved.
Description
Technical Field
The utility model relates to the technical field of automatic driving of agricultural machinery, in particular to an anti-flameout circuit and flameout method of the agricultural machinery.
Background
Currently, the field of agricultural autopilot is rapidly evolving, and the control of agricultural autopilot has formed relatively sophisticated control systems, such as: the Beidou navigation unmanned agricultural machine automatic driving system comprises a vehicle-mounted part which generally comprises an upper computer (generally a flat plate), a controller, a satellite antenna, an angle sensor, an attitude sensor, a radar and the like, and other ground base stations and the like. However, regarding the control system for flameout and flameout of the agricultural machine, in the prior art, flameout and flameout control is attached to the cooperation of various components, and although the degree of intellectualization is high, meanwhile, because the circuit is more complex, the transmission path is longer, and the transmission stability is reduced.
For example, the utility model of chinese patent publication No. CN202463585U discloses a control device for flameout of an automobile, in which the collision signal generated by the device is processed by a discrete semiconductor device (such as a triode) and then transmitted to an MCU, and then the ECU driving circuit is powered off, and these devices are easily deactivated by electromagnetic interference, and the collision signal is generated to the flameout of the automobile, and the circuit is more complex, and the possibility of deactivation is also greater. Therefore, development of a method for monitoring and flameout when meeting resistance of an unmanned agricultural machine with simple structure and high stability is urgently needed, and the method is installed on the unmanned agricultural machine, such as a harvester, a tractor, a weeder and the like, and is used in cooperation with a Beidou navigation unmanned agricultural machine automatic driving system. The safety operation of the agricultural machinery is improved, and the reliability is improved.
Disclosure of Invention
The utility model aims to provide an agricultural machinery flameout circuit and flameout method, which are used for solving the problems in the background technology.
In order to solve the technical problems, the utility model provides the following technical scheme:
an agricultural machinery flameout circuit comprises an agricultural machinery key gate circuit, a signal latch circuit, an agricultural machinery flameout circuit and a micro switch;
the agricultural machinery key door circuit comprises an ACC wire connected with one end of a key door and an ACC wire connected with one end of a starter;
the signal latch circuit comprises a relay I;
the agricultural machinery flameout circuit comprises a relay II;
the micro switch is arranged inside the agricultural machinery anti-collision strip;
one end of the ACC wire connected with the key door is electrically connected with the input end of the second normally closed executing mechanism of the relay, the input end of the second sensing mechanism of the relay and the input end of the first sensing mechanism of the relay;
the output end of the relay two normally closed actuating mechanism is electrically connected with one end of the ACC wire connection starter;
the output end of the second sensing mechanism of the relay, the output end of the first sensing mechanism of the relay and the output end of the normally open actuating mechanism of the relay are electrically connected with the input end of the micro switch;
the input end of the relay-normally open actuating mechanism is grounded;
the output end of the micro switch is grounded.
Preferably, the number of the micro switches is greater than or equal to 1.
An agricultural machinery flameout method when meeting resistance, which utilizes one of the aforementioned agricultural machinery flameout circuits to control the agricultural machinery flameout.
Preferably, the agricultural machinery resistance state is judged according to the voltage change signal of the input end of the micro switch.
Compared with the prior art, the utility model has the following beneficial effects:
1) The utility model has simple structure, low production cost and high stability;
2) The circuit structure of the utility model can be independently operated and can be matched with a navigation system for use, and the state of the agricultural machine is judged by collecting the voltage change signal of the input end of the micro switch, so that a judgment basis is provided for the navigation system;
3) After encountering an obstacle, the agricultural machinery can be independently and directly flameout without a navigation system. Under the condition that the parking flameout function of the navigation system fails, the vehicle can still stop when meeting flameout, and the safety performance of the agricultural machinery is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
fig. 1 is a schematic diagram of the operation of the control circuit of the present utility model.
In the figure, SW1, microswitch 1; SW2, micro switch 2; SW3, micro switch 3; SW4, micro switch 4; SW5, micro switch 5; SW6, micro switch 6; RLY1, relay one; RLY2, relay II; POINT1, connection POINT 1.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the present utility model provides the following technical solutions:
1. obstacle detection function
The circuit is composed of a group of serially connected micro switches, in the circuit diagram, SW1 to SW6 are 6 micro switches in total, and actually the number of the micro switches can be increased or decreased according to the length of the anti-collision strip. The obstruction detection circuitry is encapsulated in a suitable flexible hose.
When the agricultural machinery runs, the key door is in an ON gear, the anti-collision bar is not touched by an obstacle, the ACC 1 in the circuit has 12V voltage, and the POINT1 in the circuit has 12V voltage; when the bumper is touched by an obstacle, the voltage "POINT1" in the circuit will become 0V.
2. Flameout function of agricultural machinery
After the anti-collision strip touches, the ACC line of the agricultural machine can be disconnected, so that the agricultural machine can flameout and stop, and the anti-collision strip is mainly realized through a circuit diagram relay RLY 2. A set of normally closed contacts of relay RLY2 are strung on the ACC line of the agricultural machine key door.
The agricultural machinery key door is screwed to the 'ON' gear, the voltage of 12V is generated ON the 4 feet of the relay RLY2, the relay RLY2 does not act, the ACC line of the key door is connected, and the agricultural machinery can work normally.
After the anti-collision strip is touched by an obstacle, the voltage of 'Point 1' in the circuit can be changed to 0V, the relay RLY2 can act, the normally closed terminals 1 and 2 of the relay RLY can be disconnected, the ACC line of the agricultural machine is disconnected, and the agricultural machine can be flameout and stopped.
The agricultural machinery is restarted by first turning the key door to the "OFF" gear and then restarting the agricultural machinery in the normal manner.
3. Touch signal latch function
The touch state latch circuit is realized by a relay "rle 1" in the circuit diagram. When the agricultural machinery operates normally, the key door is in an ON gear, the ACC 1 in the circuit has 12V voltage, and the POINT1 in the circuit has 12V voltage;
upon touching an obstruction, the voltage "POINT1" in the circuit becomes 0V; upon touching the obstruction and then removing the obstruction, the "POINT1" voltage in the circuit is also 0V.
As long as the obstruction is touched, the "POINT1" voltage is 0V, no matter whether the obstruction is moved away or not, which is the touch signal latch circuit. The circuit has the functions that: preventing short-time collision (such as collision of the obstacle in less than 1 second, release of the anti-collision bar and the obstacle, and short collision time) from failing to flameout and stop, and possibly requiring management personnel to handle collision accidents after the obstacle is touched. At this time, the relay RLY1 will act, because the 4 feet of the relay RLY1 are 0V voltage, the normally open terminals 1 and 3 are closed, the self-locking function is completed, at this time, even if the micro switch is opened, the ACC 1 voltage in the circuit is 0V through the 3 feet of the relay RLY1 to the ground, the relay RLY2 will act, the normally closed terminals 1 and 2 thereof will be opened, the ACC line of the agricultural machinery will be opened, and the agricultural machinery will continue to stall and stop.
When the agricultural machinery is started in a normal mode again, the relay RLY1 can act, and the normally open terminals 1 and 3 are kept disconnected because the voltage of 12V is available on the 4 pin of the relay RLY1, so that the self-locking function is released.
4. Touch signal output function
The voltage signal of the POINT1 in the circuit is 12V, the obstacle is not touched, the voltage signal of the POINT is 0V, the voltage signal of the POINT can be output to the navigation system, and the navigation system can monitor the obstacle meeting state of the anti-collision strip so as to perform corresponding processing.
The application and the patent of CN202463585U disclose a car collision flameout control device which is characterized in that:
1 with large differences in reliability. In the comparison document, the generated collision signals are transmitted to the MCU after being processed by discrete semiconductor devices (such as triodes) and then are powered off by an ECU driving circuit, the devices are easy to lose efficacy due to electromagnetic interference, and the circuit is complex and the possibility of losing efficacy is higher from the generation of the collision signals to the shutdown flameout; in this application, the circuit only comprises micro-gap switch and relay, and is succinct, hardly receives the problem that electromagnetic interference became invalid, and is more reliable.
2 the circuit has larger difference in implementation difficulty. In the comparison document, the circuit is complex in implementation, comprises an MCU and discrete semiconductor devices (such as triodes), and is also required to be welded on a circuit board; the method has simple circuit realization, and can be realized by common technicians with circuit wiring only by a few relays and switches.
3, the popularization and application of the technology will be greatly different. Because the collision signal can be transmitted to other control units (such as the signal of 'POINT 1' can be transmitted to a navigation system or an MCU), but the control unit does not depend on the MCU, and the complete and independent stopping flameout function can be realized without using the MCU, the implementation is very simple, the cost is very low, the technical level of the control unit is not needed, and a common technician can install the circuit on an agricultural machine. There is no technical or cost threshold for the stock farm machinery to add this function. In the comparison document, the implementation is realized through the MCU (firmware is needed), so that the application of the storage agricultural machine is difficult to realize by a common technician due to the complex circuit, and the cost is high.
4 the applicable scene difference is larger. The comparison file is used for the automobile, and under the condition of higher automobile speed, the method can not immediately cut off power to all electric equipment on the automobile to realize stopping flameout, otherwise, after collision, the power is cut off in a high-speed state, a hydraulic system on the automobile does not work, a steering wheel also loses assistance or locks, and the automobile is out of control and is dangerous; the method is applicable to agricultural machinery and has low speed, so that after collision, all equipment on the vehicle can be directly powered off through the relay to realize stopping flameout, and no danger is generated.
And 5, after collision, the normal state is recovered in different modes. In the comparison file, after no collision is seen, how to release the power-off state and to restart the automobile normally; according to the method, after collision occurs, the agricultural machinery can be relieved and is always in a power-OFF state only by closing the key door (the key door is screwed to the OFF gear), because after the anti-collision bar touches the obstacle, the relay RLY1 acts and the negative electrode is turned on, so that the two relays RLY1 and RLY2 are always in an action state, the ACC line of the agricultural machinery is disconnected, and the agricultural machinery is also in a flameout state. Only when the key door is screwed to the OFF gear, the power supply of the two relays is disconnected, the two relays can be restored to normal state, the ACC line of the agricultural machine is not disconnected, and the agricultural machine can be powered on and started again. The method accords with the operation habit of a general driver, and does not change the operation habit and operation experience of the driver due to the functions of the application.
The application does not obviously change operation habit by adding the anti-collision circuit. After stopping in a blocking manner, an operator only needs to close the key door (screwing the key to an OFF gear), so that the anti-collision circuit can cut OFF power supply and release the latching state of the signal latching relay (RLY 1). After the operator is powered up again, the anti-collision circuit can be operated again. The operation mode accords with the general operation habit of operators, and no extra complicated operation exists.
The utility model provides an use relay to realize signal latching, after touching the crashproof strip, even relieve physics again and collide the crashproof strip, latch relay (RLY 1) can realize that collision signal can exist all the time, can not relieve until the operator closes the key door.
According to the method, the agricultural machinery is powered off by cutting off the power supply, flameout and parking are achieved, the low-speed characteristic of the agricultural machinery is fully utilized, danger cannot be generated in the power-off mode, and danger can be generated when the automobile is powered off directly if the speed of the automobile is high.
It should be noted that in this document, relational terms such as first and second, input and output, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (4)
1. The agronomic machinery flameout circuit is characterized by comprising an agronomic machinery key gate circuit, a signal latch circuit, an agronomic machinery flameout circuit and a micro switch;
the agricultural machinery key door circuit comprises an ACC wire connected with one end of a key door and an ACC wire connected with one end of a starter;
the signal latch circuit comprises a relay I;
the agricultural machinery flameout circuit comprises a relay II;
the micro switch is arranged inside the agricultural machinery anti-collision strip;
one end of the ACC wire connected with the key door is electrically connected with the input end of the second normally closed executing mechanism of the relay, the input end of the second sensing mechanism of the relay and the input end of the first sensing mechanism of the relay;
the output end of the relay two normally closed actuating mechanism is electrically connected with one end of the ACC wire connection starter;
the output end of the second sensing mechanism of the relay, the output end of the first sensing mechanism of the relay and the output end of the normally open actuating mechanism of the relay are electrically connected with the input end of the micro switch;
the input end of the relay-normally open actuating mechanism is grounded;
the output end of the micro switch is grounded.
2. The agronomic machinery flameout circuit according to claim 1, wherein the number of micro switches is more than or equal to 1.
3. An agricultural machinery flameout method when meeting resistance, which is characterized in that the agricultural machinery flameout is controlled by the agricultural machinery flameout circuit when meeting resistance according to any one of the claims 1 or 2.
4. The method for flameout when meeting resistance of agricultural machinery according to claim 3, wherein the state of meeting resistance of agricultural machinery is judged according to the voltage change signal of the input end of the micro switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311467245.0A CN117627797A (en) | 2023-11-06 | 2023-11-06 | Flameout circuit and flameout method for agricultural machinery when meeting resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311467245.0A CN117627797A (en) | 2023-11-06 | 2023-11-06 | Flameout circuit and flameout method for agricultural machinery when meeting resistance |
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| CN117627797A true CN117627797A (en) | 2024-03-01 |
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| CN202311467245.0A Pending CN117627797A (en) | 2023-11-06 | 2023-11-06 | Flameout circuit and flameout method for agricultural machinery when meeting resistance |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6328745A (en) * | 1986-07-21 | 1988-02-06 | Kyokuto Kaihatsu Kogyo Co Ltd | Motorcycle transporting truck |
| CN202463585U (en) * | 2011-12-23 | 2012-10-03 | 浙江师范大学 | Automobile collision off control device |
| CN103802676A (en) * | 2014-02-18 | 2014-05-21 | 安徽江淮汽车股份有限公司 | Full vehicle power supply control system and method |
| CN109398335A (en) * | 2018-11-12 | 2019-03-01 | 成都扬发机电有限公司 | The anti-collision system of special vehicle |
| CN214189319U (en) * | 2021-02-01 | 2021-09-14 | 杭叉集团股份有限公司 | Active safety protection system for industrial vehicle collision |
-
2023
- 2023-11-06 CN CN202311467245.0A patent/CN117627797A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6328745A (en) * | 1986-07-21 | 1988-02-06 | Kyokuto Kaihatsu Kogyo Co Ltd | Motorcycle transporting truck |
| CN202463585U (en) * | 2011-12-23 | 2012-10-03 | 浙江师范大学 | Automobile collision off control device |
| CN103802676A (en) * | 2014-02-18 | 2014-05-21 | 安徽江淮汽车股份有限公司 | Full vehicle power supply control system and method |
| CN109398335A (en) * | 2018-11-12 | 2019-03-01 | 成都扬发机电有限公司 | The anti-collision system of special vehicle |
| CN214189319U (en) * | 2021-02-01 | 2021-09-14 | 杭叉集团股份有限公司 | Active safety protection system for industrial vehicle collision |
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