Gear switch circuit, gear control system and vehicle

Abstract

The application relates to a gear switch circuit, a gear control system and a vehicle. The gear switch circuit comprises a plurality of voltage division circuits, a first end of the voltage division circuit is used for being connected to a power supply voltage; a plurality of gear switches, a first end of each gear switch is grounded, and a second end of the plurality of gear switches is connected to a second end of the plurality of voltage division circuits in correspondence; a plurality of first NAND gates, input ends of the plurality of first NAND gates are connected to third ends of the plurality of voltage division circuits in correspondence; an encoder circuit, input ends of the encoder circuit are connected to output ends of the first NAND gates, and a plurality of output ends of the encoder circuit are used for being connected to a vehicle-mounted instrument; wherein the number of the input ends of the encoder circuit is greater than the number of the output ends of the encoder circuit, and each output end of the encoder circuit is used for outputting a high-level signal or a low-level signal; when different gear switches are triggered, the logic level combinations output by each output end of the encoder circuit are different. The wire harness and port resources can be saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gear control, in particular to a gear switch circuit, a gear control system and a vehicle. BACKGROUND

[0002] The control of the gear switch is very important in vehicle driving control. At present, the input of the gear switch on the market mainly has a grounding type. In the grounding input mode, the gear sensor is grounded through the gear contact of the engine, and each gear contact is connected to an end of the vehicle-mounted instrument. Based on the one-to-one correspondence between the ends, the gear control is realized. For this scheme, if the vehicle type needs to display 6 gear positions and a neutral signal, at least 7 lines need to be connected to the instrument or the electronic control unit (ECU) and other vehicle-mounted instruments. The wire harness required between the gear sensor and the controller occupies the port resources of the controller. SUMMARY

[0003] Therefore, it is necessary to provide a gear switch circuit, a gear control system and a vehicle which save port resources.

[0004] In a first aspect, a gear switch circuit is provided, comprising:

[0005] a plurality of voltage division circuits, a first end of each voltage division circuit being used for accessing a power supply voltage;

[0006] a plurality of gear switches, a first end of each gear switch being grounded, and a second end of each gear switch being connected to a second end of a corresponding voltage division circuit;

[0007] a plurality of first NOT gates, an input end of each first NOT gate being connected to a third end of a corresponding voltage division circuit;

[0008] an encoder circuit, an input end of the encoder circuit being connected to an output end of each first NOT gate, and a plurality of output ends of the encoder circuit being used for connecting a vehicle-mounted instrument;

[0009] wherein the number of input ends of the encoder circuit is greater than the number of output ends of the encoder circuit, and each output end of the encoder circuit is used for outputting a high-level signal or a low-level signal.

[0010] When different gear switches are triggered, the logic level combinations output by the output ends of the encoder circuit are different.

[0011] In one embodiment, the encoder circuit comprises:

[0012] a plurality of second NOT gates, inputs of the second NOT gates are respectively connected to outputs of the first NOT gates;

[0013] a plurality of AND logic units, inputs of the AND logic units are respectively connected to outputs of the first NOT gates and outputs of the second NOT gates;

[0014] a plurality of first NOR gates, inputs of the first NOR gates are respectively connected to outputs of the AND logic units, so that when different gear switches are triggered, logic levels outputted by outputs of the first NOR gates are different.

[0015] In one embodiment, the number of the voltage dividing circuits is greater than the number of the gear switches.

[0016] In one embodiment, the encoder circuit further comprises:

[0017] a second NOR gate, inputs of the second NOR gate are respectively connected to outputs of target first NOT gates, the target first NOT gates are first NOT gates not connected to gear switches, and an output of the second NOR gate is connected to an input of the AND logic unit;

[0018] a third NOR gate, inputs of the third NOR gate are respectively connected to outputs of the target first NOT gates, and an output of the third NOR gate is connected to the vehicle-mounted instrument.

[0019] In one embodiment, the gear switch circuit further comprises:

[0020] a first circuit board, configured with a plurality of first ends and a plurality of second ends, the voltage dividing circuit, the first NOT gate and the encoder circuit are arranged on the first circuit board;

[0021] wherein the second ends of the voltage dividing circuit are respectively connected to the second ends of the gear switches through the first ends of the first circuit board, and the outputs of the encoder circuit are respectively connected to the vehicle-mounted instrument through the second ends of the first circuit board.

[0022] In one embodiment, the gear switch circuit further comprises:

[0023] a second circuit board, configured with a plurality of first ends and a plurality of second ends, and the gear switch is arranged on the second circuit board;

[0024] The first end of the plurality of gear switches is grounded through a plurality of first ends of the second circuit board; and the second end of the plurality of gear switches is connected to a plurality of second ends of the voltage dividing circuit through a plurality of second ends of the second circuit board.

[0025] In one of the embodiments, the gear switch circuit further comprises:

[0026] The third circuit board is configured with a first end and a plurality of second ends, and the gear switch, the voltage dividing circuit and the encoder circuit are arranged on the third circuit board.

[0027] The first end of each of the gear switches is grounded through the first end of the third circuit board, and the output end of the encoder circuit is connected to the input end of the vehicle-mounted instrument through the plurality of second ends of the third circuit board.

[0028] In one of the embodiments, the output end of the encoder circuit is at least two, and the gear switch is at least four.

[0029] In a second aspect, a gear control system is provided, comprising:

[0030] The gear switch circuit as described above;

[0031] The vehicle-mounted instrument, and a plurality of input ends of the vehicle-mounted instrument are connected to a plurality of output ends of the encoder circuit.

[0032] In a third aspect, a vehicle is provided, comprising the gear control system.

[0033] The gear switch circuit, the gear control system and the vehicle have at least the following beneficial effects:

[0034] The gear signal is also input in a grounded manner, one end of the gear switch is grounded, and the other end is connected to the voltage dividing circuit. The voltage dividing circuit is connected to the input end of the encoder circuit through the first NOT gate, and the logic conversion such as AND, OR and NOT is performed through the encoder, so that the gear signal is converted into a gear signal through a small number of output ends and input to the vehicle-mounted instrument for collection. This scheme only needs a small number of gear signal lines to input to the vehicle-mounted instrument, can avoid the problem of incorrect display of the gear, and saves the wire harness and port resources. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1 Fig. 1 is a structural schematic diagram of a gear switch circuit in a conventional example;

[0037] Figure 2 Fig. 2 is a structural schematic diagram of a gear switch circuit and a gear control system in an embodiment;

[0038] Figure 3 Fig. 3 is a structural schematic diagram of a gear switch circuit and a gear control system in another embodiment;

[0039] Figure 4 Fig. 4 is a structural schematic diagram of a gear switch circuit and a gear control system in yet another embodiment;

[0040] Figure 5 Fig. 5 is a structural schematic diagram of a gear switch circuit and a gear control system in still another embodiment. DETAILED DESCRIPTION

[0041] In order to facilitate the understanding of the present application, the present application will be described in more detail below with reference to the relevant drawings. The drawings show embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is only for the purpose of describing the specific embodiments of the present application and is not intended to limit the present application.

[0043] It can be understood that the terms "first", "second", and the like used in the present application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element. For example, without departing from the scope of the present application, the first resistor can be referred to as the second resistor, and similarly, the second resistor can be referred to as the first resistor. The first resistor and the second resistor are both resistors, but they are not the same resistor.

[0044] It can be understood that "connection" in the following embodiments, if the circuits, modules, units, etc. connected to each other have the transmission of electrical signals or data, should be understood as "electrically connected", "communicatively connected", etc.

[0045] As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It will be further understood that the terms "comprises", "comprising", "includes" and / or "including", or the like, when used in this specification, specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0046] The "multiple" in the embodiments of the application can be understood as two and more than two.

[0047] As shown in Figure 1 In the prior art, a single gear switch is connected with a vehicle-mounted instrument through one output to realize gear display. In this way, a large number of ports of the vehicle-mounted instrument are occupied, and a large number of wire harnesses are required to realize the connection with the vehicle-mounted instrument, which increases the weight of the whole vehicle and affects the performance of the whole vehicle.

[0048] Based on this, in a first aspect, the application provides a gear switch circuit, comprising: a plurality of voltage division circuits 20, a plurality of gear switches 40, a plurality of first NAND gates 60, and an encoder circuit 80. The first end of the plurality of voltage division circuits 20 is used to access a supply voltage VCC; the first end of each gear switch 40 is grounded, and the second end of the plurality of gear switches 40 is respectively connected with the second end of the plurality of voltage division circuits 20 in correspondence; the input end of the plurality of first NAND gates 60 is connected with the third end of the plurality of voltage division circuits 20 in one-to-one correspondence; the input end of the encoder circuit 80 is connected with the output end of each first NAND gate 60, and the plurality of output ends of the encoder circuit 80 are used to connect with a vehicle-mounted instrument 90; wherein the number of input ends of the encoder circuit 80 is greater than the number of output ends of the encoder circuit 80, and each output end of the encoder circuit 80 is used to output a high-level signal or a low-level signal respectively; when different gear switches 0 are triggered, the logic level combination output by each output end of the encoder circuit 80 is different.

[0049] The voltage division circuit can include a voltage division resistor and the like, for example, can include a voltage division resistor R as shown in Figure 2 to divide the supply voltage for processing to adapt to the input voltage requirement of the first NAND gate 60.

[0050] When the gear position switch 40 is not closed, under the influence of the supply voltage VCC, a high-level signal is input to the first NOT gate 60, which outputs a low-level signal. When the gear position switch 40 is open, the input signal of the first NOT gate 60 is pulled to ground, becoming a low-level signal, which then outputs a high-level signal. The signals output from each of the first NOT gates 60 are transmitted to the input of the encoder circuit 80. After being encoded by the encoder circuit 80, signals are output from multiple outputs, fewer than the number of inputs. The logical combination of the output signals from the encoder circuit 80 changes as different gear position switches 40 are closed, and the high and low level combinations of the output signals from the encoder circuit 80 are different when different gear position switches 40 are closed, indicating a one-to-one correspondence. Based on this, gear position detection and display functions can be achieved using fewer wiring harnesses between the output of the encoder circuit 80 and the vehicle instrument panel 90, reducing the number of wiring harnesses, lightening the overall vehicle weight, and improving overall vehicle performance. Furthermore, it also reduces the occupation of port resources on the vehicle instrument panel.

[0051] In one embodiment, the encoder circuit 80 includes: a plurality of second NOT gates 82, a plurality of AND logic units 84, and a plurality of first NOR gates 86.

[0052] The inputs of multiple second NOT gates 82 are respectively connected to the outputs of some first NOT gates; multiple AND logic units 84 are respectively connected to the outputs of multiple first NOT gates and multiple second NOT gates 82; multiple inputs of multiple first NOR gates 86 are respectively connected to the outputs of an AND logic unit 84, so that when different gear switches are triggered, the logic level combinations output by the outputs of each first NOR gate 86 are different. The second NOT gate 82 performs a level conversion on part of the output signal of the first NOT gate 60, providing more input level combinations for the AND logic unit 84. Then, using the AND gate in the AND logic unit 84, the level of the output signal of the AND logic unit 84 changes when different gear switches 40 are triggered. The first NOR gate 86 performs a NOR operation on the signal output of the AND logic unit 84. Taking advantage of the characteristic that the NOR gate only outputs a high-level signal when all inputs are low, the logic combination of the output level of the first NOR gate 86 is different when different gear switches 40 are triggered. This allows signals to be transmitted to the vehicle instrument panel 90 with fewer wires to achieve functions such as gear display.

[0053] In one embodiment, the number of voltage divider circuits 20 is greater than the number of gear switches 40. By reserving several voltage divider circuits 20 and first NOT gates 60, it is beneficial to realize gear expansion, which can support the detection and display of more gears.

[0054] In one embodiment, such as Figure 2And Figure 4 As shown in FIG. 1, the encoder circuit 80 further comprises a second NOR gate 87 and a third NOR gate 88.

[0055] The multiple inputs of the second NOR gate 87 are respectively connected to the outputs of the multiple target first NOR gates 60, the outputs of the second NOR gate 87 are respectively connected to the inputs of the logic units 84, and the target first NOR gate 60 refers to the first NOR gate 60 that is not connected to the gear switch 40; the inputs of the third NOR gate 88 are respectively connected to the outputs of the multiple target first NOR gates 60, and the output of the third NOR gate 88 is used to connect the vehicle-mounted instrument 90.

[0056] By using the second NOR gate 87 and the third NOR gate 88, in combination with the two reserved voltage dividing circuits 20 and the two target first NOR gates 60, at least 9 gears can be detected and displayed.

[0057] As shown in FIG. 1, the second NOR gate 87 and the third NOR gate 88 are connected to the two target first NOR gates 60. Figure 2 And Figure 4 As shown in FIG. 1, the outputs of the second NOR gate 87 are respectively connected to the inputs of the AND gates in each of the logic units 84.

[0058] In one embodiment, the gear switch circuit further comprises a first circuit board 10.

[0059] The first circuit board 10 is configured with multiple first ends and multiple second ends, and the voltage dividing circuit 20, the first NOR gate 60, and the encoder circuit 80 are all arranged on the first circuit board 10; the multiple second ends of the voltage dividing circuit 20 are respectively connected to the second ends of the multiple gear switches 40 through the multiple first ends of the first circuit board 10; and the multiple outputs of the encoder circuit 80 are respectively connected to the vehicle-mounted instrument through the multiple second ends of the first circuit board 10. Figure 2 As shown in FIG. 1, by integrating the voltage dividing circuit 20, the first NOR gate 60, and the encoder circuit 80 on one circuit board, the wiring outside the circuit board 10 can be reduced, the product reliability can be improved, and by modularization, only the multiple first ends of the gear switch 40 and the first circuit board 10 need to be connected during use.

[0060] In one embodiment, the gear switch circuit further comprises a second circuit board 30.

[0061] The second circuit board 30 is configured with a plurality of first ends and a plurality of second ends, and the gear switch 40 is arranged on the second circuit board 30; wherein the first ends of the plurality of gear switches 40 are grounded through the plurality of first ends of the second circuit board 30; and the second ends of the plurality of gear switches 40 are connected to the plurality of second ends of the voltage division circuit 20 through the plurality of second ends of the second circuit board 30. By integrating the gear switch on the second circuit board 30, the use reliability of the gear switch 40 can be improved, the wiring between the circuit boards can be reduced, the failure caused by loose wiring can be avoided, and the performance reliability of the whole vehicle can be improved.

[0062] In one embodiment, as shown in Figure 4 The gear switch circuit further comprises a third circuit board 50.

[0063] The third circuit board 50 is configured with a first end and a plurality of second ends, and the gear switch 40, the voltage division circuit 20 and the encoder circuit 80 are arranged on the third circuit board 50; the first end of each gear switch 40 is grounded through the first end of the third circuit board 50, and the output end of the encoder circuit 80 is connected to the input end of the vehicle-mounted instrument 90 through the plurality of second ends of the third circuit board 50.

[0064] Optionally, a plurality of voltage division circuits 20 not connected to the gear switch 40 can be reserved, such as path 8 and path 9 shown in the figure. The second end of the reserved voltage division circuit 20 is connected to the external gear switch 40 through two ends on the third circuit board 50, so that more gear switches 40 can be expanded. Correspondingly, the second or non-gate 87 and the third or non-gate 88 can also be connected to the first non-gate 60 and each logic unit 84 as shown in the figure, and connected to the vehicle-mounted instrument through the port D of the third circuit board 50, so as to realize the control expansion of more than 7 gears.

[0065] In one embodiment, as shown in Figures 2-4 The output end of the encoder circuit 80 is at least two, and the gear switch 40 is at least four. For example, a motorcycle with 0-5 gears or 0-6 gears can be supported. A 5-gear automatic transmission car, P, R, N, D, S, can also be supported. A 7-gear manual transmission car, R, N, 1-5 gears, can also be supported. This is not an exhaustive list.

[0066] The gear switch circuit provided by the embodiment of the application can realize the control logic of at least four gears, and for the four gear switches 40, the gear switch circuit only needs to draw two output ends from the encoder circuit 80 to realize the transmission of the triggering conditions of the four gear switches 40.

[0067] Specifically, as shown in Figure 3As shown, for the four gear position switches 40 K1-K4, each is connected to a first NOT gate 60 through the corresponding voltage dividing circuit 20. The encoder circuit 80 includes four input terminals and two output terminals, the four input terminals are connected to the input terminals of the four first NOT gates 60 respectively, and the four output terminals are connected to the two terminals of the vehicle-mounted instrument 90 respectively. Only two wire harnesses are needed to realize the connection between the gear position switch circuit and the vehicle-mounted instrument 90. For the vehicle, the weight of the added logic device is far less than the weight of the wire harness connected to the vehicle-mounted instrument 90. Therefore, by reducing the connection wire harness between the gear position switch circuit and the vehicle-mounted instrument 90, the vehicle body weight can be reduced, the overall vehicle performance can be improved, and the occupation of the port resources of the vehicle-mounted instrument 90 can be reduced.

[0068] Specifically, as shown in Figure 3 For the four gear position switches 40 K1-K4, the encoder circuit 80 can include: two second NOT gates 82, the input terminals of the two second NOT gates 82 are connected to the output terminals of two of the first NOT gates 60 respectively. Two AND logic units 84, each of which includes two AND gates. For one of the AND logic units 84, the AND logic unit 84 includes a three-input AND gate (such as the first AND gate in Figure 3 from top to bottom) and a two-input AND gate (such as the second AND gate in Figure 3 from top to bottom), the three input terminals of the three-input AND gate (such as the first AND gate in Figure 3 from top to bottom) are connected to the output terminals of the two second NOT gates 82 and the output terminals of the first NOT gates 60 in Figure 3 from top to bottom, the two input terminals of the second AND gate in Figure 3 from top to bottom are connected to the output terminals of the third first NOT gate 60 and the output terminals of the second second NOT gate 82 respectively.

[0069] The other AND logic unit 84 also includes two AND gates, such as the third AND gate in Figure 3 from top to bottom, the two input terminals of the third AND gate are connected to the output terminals of the second first NOT gate 60 and the output terminals of the second second NOT gate 82 respectively. Such as the fourth AND gate in Figure 3 from top to bottom, the two input terminals of the fourth AND gate are connected to the output terminals of the third first NOT gate 60 and the output terminals of the second second NOT gate 82 respectively.

[0070] The encoder circuit 80 further includes two first OR NOT gates 86, Figure 3 the two input terminals of the upper first OR NOT gate 86 are connected to the output terminals of the first AND gate and the output terminals of the second AND gate respectively. The two input terminals of the lower first OR NOT gate 86 are connected to the output terminals of the third AND gate and the output terminals of the fourth AND gate respectively.

[0071] In the aboveGear switch triggering situation Under the circuit structure shown, the truth table shown in the following table can be realized:

[0072] Table 1

[0073] Representative gear B A Gear switch Kl closed N range H(1) L(0) Gear switch K2 closed 1st gear L(0) H(0) Gear switch K3 closed 2nd gear L(0) L(0) Gear switch K4 closed 3rd gear H(1) H(1) Figure 2

[0074] Of course, more gear control can also be realized by increasing the number of first NOT gates 60, second NOT gates 82, AND gates, and first OR NOT gates 86, but the required connection harness between the gear switch circuit and the vehicle-mounted instrument is less in accordance with the above design concept.

[0075] For example, as shown in Figure 4 and Figure 2 , for the seven gear switches 40 K1-K7, at least seven voltage division circuits 20 and seven first NOT gates 60 can be provided. The encoder circuit 80 includes at least seven input terminals and three output terminals. When different gear switches 40 are triggered to be closed, the high and low level logic combinations output by the three output terminals of the encoder circuit 80 are different, and only three harnesses are required to realize communication with the vehicle-mounted instrument 90, and to transmit the gear triggering conditions under 7 gears.

[0076] Specifically, as shown in Figure 4 , Figure 5 , Figure 2 , the encoder circuit 80 can include five second NOT gates 82. As shown in Figure 5 , from top to bottom, the input terminal of the first second NOT gate 82 is connected to the output terminal of the second first NOT gate 60, the input terminal of the second second NOT gate 82 is connected to the output terminal of the fourth first NOT gate 60, the input terminal of the third second NOT gate 82 is connected to the output terminal of the fifth first NOT gate 60, and the input terminal of the fourth second NOT gate 82 is connected to the output terminal of the sixth first NOT gate 60.

[0077] The encoder circuit further includes four AND logic units 84. As shown in Figure 2 , from top to bottom in the perspective view:

[0078] The first AND logic unit 84 includes at least four AND gates. The four input terminals of the first AND gate are respectively connected to the output terminal of the first first NOT gate 60, the output terminal of the first second NOT gate 82, the output terminal of the second second NOT gate 82, and the output terminal of the fourth second NOT gate 82. The three input terminals of the second AND gate are respectively connected to the output terminal of the third first NOT gate 60, the output terminal of the second second NOT gate 82, and the output terminal of the fourth second NOT gate 82. The two output terminals of the third AND gate are respectively connected to the output terminal of the fifth first NOT gate 60 and the output terminal of the fourth second NOT gate 82. The input terminal of the fourth AND gate is connected to the output terminal of the seventh first NOT gate 60. The output terminals of the four AND gates of the first AND logic unit 84 are all connected to the first OR NOT gate 86.

[0079] The second AND logic unit 84 includes four AND gates, the first AND gate has three inputs connected to the output of the second first NOT gate 60, the output of the second second NOT gate 82 and the output of the third second NOT gate 82 respectively. The second AND gate has three inputs connected to the output of the third first NOT gate 60, the output of the second second NOT gate 82 and the output of the third second NOT gate 82 respectively. The input of the third AND gate is connected to the output of the sixth first NOT gate 60, and the input of the fourth AND gate is connected to the output of the seventh first NOT gate 60. The outputs of the four AND gates in the second AND logic unit 84 are connected to the four inputs of the second first OR-NOT gate 86 respectively.

[0080] The third AND logic unit 84 includes four AND gates, the input of the first AND gate is connected to the output of the fourth first NOT gate 60, the input of the second AND gate is connected to the output of the fifth first NOT gate 60, and the input of the third AND gate is connected to the output of the sixth first NOT gate 60. The input of the fourth AND gate is connected to the output of the seventh first NOT gate 60. The outputs of the four AND gates in the third AND logic unit 84 are connected to the four inputs of the third first OR-NOT gate 86 respectively.

[0081] As shown in Figure 4 , Figure 5 , Gear switch triggering situation The three pins A, B and C of the first, second and third first OR-NOT gates 86 from top to bottom are connected to the three terminals of the vehicle-mounted instrument 90 through a wire harness. The truth table shown in the following table can be achieved:

[0082] Table 2

[0083] Representative gear C B A Gear switch Kl closed N range H(1) H(1) H(1) Gear switch K2 closed 1st gear H(1) L(0) H(1) Gear switch K3 closed 2nd gear H(1) L(0) L(0) Gear switch K4 closed 3rd gear L(0) H(1) H(1) Gear switch K5 closed 4th gear L(0) H(1) L(0) Gear switch K6 closed 5th gear L(0) L(0) H(1) Gear switch K7 closed 6th gear L(0) L(0) L(0) ​

[0084] Among them, as for the AND gate in the figure which only uses one input, the device can also be directly omitted, and the signal transmission between its input and output is realized by using a wire.

[0085] In the second aspect, a gear control system is provided, which includes: the gear switch circuit as above; and a vehicle-mounted instrument 90. The plurality of inputs of the vehicle-mounted instrument 90 are connected to the plurality of outputs of the encoder circuit 80.

[0086] The vehicle-mounted instrument 90 refers to an instrument capable of analyzing the output of the gear position switch circuit to perform functions such as gear position display. For different types of vehicles, the role of gear position display can be determined according to the specific vehicle type. For example, for a motorcycle, the multiple output terminals of the encoder circuit 80 can be connected to the vehicle-mounted instrument 90 such as the instrument of the vehicle head or the electronic injection ECU, to transmit signals capable of representing the triggering condition of the gear position switch 40 to the vehicle-mounted instrument 90, and based on the functions of the vehicle-mounted instrument 90, to realize functions such as gear position display.

[0087] The gear control system provided by the embodiments of the present application has fewer pins at the output terminals of the encoder circuit 80 than the number of gear position switches, and can realize connection with the vehicle-mounted instrument 90 with fewer wire harnesses, reduce the weight of the vehicle, improve the performance of the vehicle, save port resources of the controller, and be conducive to reducing the size and cost of the vehicle-mounted instrument 90. The port resources of the vehicle-mounted instrument 90 in the traditional technology can be used to realize more diversified functions, thereby improving the diversity of vehicle functions without increasing the cost of the controller.

[0088] In a third aspect, a vehicle is provided, comprising the above-mentioned gear control system. The vehicle can be, but is not limited to, a motorcycle, a car, an electric vehicle, or other vehicles with multiple gears. The installation position of the above-mentioned gear control system on the vehicle body is determined according to the specific type of the vehicle. For example, for a motorcycle, the gear control system can be an instrument or an electronic injection ECU. By mounting the above-mentioned gear control system, the required wire harness between the gear position switch circuit and the vehicle-mounted instrument 90 is reduced, and for a motorcycle or the like, reducing the wire harness can reduce the weight of the vehicle and improve the performance of the vehicle. In addition, the port resources of the vehicle-mounted instrument 90 are less occupied, and especially for small vehicle-mounted instruments 90 such as motorcycle instruments, the port resources are limited. Through the above design, the port resources of the vehicle-mounted instrument 90 can be used for more diversified function implementation.

[0089] In addition, the gear position switch circuit, the gear control system and the vehicle provided by the embodiments of the present application have the above-mentioned beneficial effects, and the grounding implementation mode can avoid the problem that the voltage range between different gear signals is small and ultimately causes the gear display to be disordered, compared with the voltage division implementation mode in the traditional technology. The gear position switch circuit in the embodiments of the present application not only has fewer wire harnesses required for connection with the vehicle-mounted instrument 90, but also can avoid the problem of gear display error caused by oil leakage.

[0090] In the description of the specification, the description of the terms "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one embodiment or example of the present application. In the description of the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example.

[0091] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict each other, they should be considered as the scope of the present application.

[0092] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A range switch circuit, characterized by, The application relates to a gear switch circuit. The gear switch circuit comprises: a plurality of voltage division circuits, the first ends of the voltage division circuits being used for accessing a power supply voltage; a plurality of gear switches, the first ends of the gear switches being grounded, and the second ends of the gear switches being respectively connected to the second ends of the voltage division circuits; a plurality of first NOT gates, the input ends of the first NOT gates being respectively connected to the third ends of the voltage division circuits; an encoder circuit, the input end of the encoder circuit being connected to the output ends of the first NOT gates, and a plurality of output ends of the encoder circuit being used for connecting to a vehicle-mounted instrument; wherein the number of input ends of the encoder circuit is greater than the number of output ends of the encoder circuit, and each output end of the encoder circuit is used for outputting a high-level signal or a low-level signal; when different gear switches are triggered, the logic level combinations output by the output ends of the encoder circuit are different; wherein the encoder circuit comprises: a plurality of second NOT gates, the input ends of the second NOT gates being respectively connected to the output ends of part of the first NOT gates; a plurality of AND logic units, the input ends of the AND logic units being respectively connected to the output ends of the first NOT gates and the output ends of the second NOT gates; a plurality of first OR NOT gates, the input ends of the first OR NOT gates being respectively connected to the output ends of the AND logic units, so that when different gear switches are triggered, the logic level combinations output by the output ends of the first OR NOT gates are different; wherein the number of voltage division circuits and the number of first NOT gates are both greater than the number of gear switches; the gear switch circuit further comprises: a third circuit board, which is provided with a first end and a plurality of second ends, and the gear switches, the voltage division circuits and the encoder circuit are arranged on the third circuit board; 2. The circuit of claim 1, wherein, the first ends of the gear switches are grounded through the first end of the third circuit board, and the output ends of the encoder circuit are respectively connected to the input ends of the vehicle-mounted instrument through the second ends of the third circuit board. the encoder circuit further comprises: a second OR NOT gate, the input ends of the second OR NOT gate being respectively connected to the output ends of a plurality of target first NOT gates, the output ends of the second OR NOT gate being respectively connected to the input ends of the AND logic units, and the target first NOT gates being the first NOT gates not connected to the gear switches; 3. The circuit of claim 1, wherein, a third OR NOT gate, the input ends of the third OR NOT gate being respectively connected to the output ends of a plurality of target first NOT gates, and the output end of the third OR NOT gate being used for connecting to the vehicle-mounted instrument. The application further comprises: a first circuit board, which is provided with a plurality of first ends and a plurality of second ends, and the voltage division circuits, the first NOT gates and the encoder circuit are arranged on the first circuit board; 4. The circuit of claim 1, wherein, wherein the second ends of the voltage division circuits are respectively connected to the second ends of the gear switches through the first ends of the first circuit board, and the output ends of the encoder circuit are respectively connected to the vehicle-mounted instrument through the second ends of the first circuit board. The application further comprises: A second circuit board is configured with a plurality of first terminals and a plurality of second terminals, and the gear switch is arranged on the second circuit board. The first terminals of the plurality of gear switches are grounded through the plurality of first terminals of the second circuit board, and the second terminals of the plurality of gear switches are connected to the second terminals of the voltage divider circuit through the plurality of second terminals of the second circuit board.

5. The circuit according to any one of claims 1 to 4, characterized in that The output terminals of the encoder circuit are at least two, and the gear switches are at least four.

6. A range control system characterized by, The gear control system comprises: The gear switch circuit according to any one of claims 1-5; The vehicle-mounted instrument is connected to the output terminals of the encoder circuit.

7. A vehicle characterized by comprising: The gear control system according to claim 6.

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