New energy electric-friction-magnetic differential SSI (Small Scale Integration) communication circuit
By using the filtering circuit of the differential SSI communication circuit of the new energy electric motorcycle, the problem of signal quality degradation during long-distance transmission was solved, and high-quality data transmission was achieved.
Patent Information
- Application Number
- CN202423271194.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing SSI communication circuits suffer from signal quality degradation during long-distance data transmission, especially in split-type models where valve position data is transmitted over long distances, resulting in disordered timing data and rendering the circuit unusable.
The new energy electric motorcycle adopts a magnetic differential SSI communication circuit, which reduces signal interference through first and second filter circuits, including a filter circuit composed of capacitors, rheostats and ESD diodes, to improve signal transmission quality.
It effectively reduces signal interference, improves signal transmission quality, and ensures data accuracy and anti-interference capability during long-distance transmission.
Smart Images
Figure CN223729738U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electronics, and in particular to a new energy electric motorcycle magnetic differential SSI communication circuit. BACKGROUND
[0002] Absolute encoders are often used in precision automation equipment to measure the attitude information of different positions. Synchronous serial interface (SSI) is a commonly used interface method for high-precision absolute encoders, which can realize high-precision and high-real-time angle output, and has strong anti-interference performance, and is widely used. The existing SSI communication circuit cannot perform long-distance data transmission. When the transmission line is long, the timing data obtained by the host board is chaotic and cannot be used normally. Especially when transmitting valve position data over a long distance in a split type model, the signal quality is reduced, which is particularly obvious. SUMMARY
[0003] The main purpose of the present application is to provide a new energy electric motorcycle magnetic differential SSI communication circuit, which aims to solve the above technical problems.
[0004] To achieve the above purpose, the present application provides a new energy electric motorcycle magnetic differential SSI communication circuit, which comprises:
[0005] a controller;
[0006] a signal input source connected with the controller;
[0007] a first filter circuit connected with the controller and used for receiving the electrical signal of the controller;
[0008] an encoder used for receiving the output signal of the filter circuit;
[0009] a second filter circuit connected with the controller and used for receiving the signal of the encoder and transmitting the electrical signal to the controller.
[0010] In an embodiment, a first resistor is connected between the signal input source and the controller.
[0011] In an embodiment, the first filter circuit comprises a first capacitor, a second capacitor and a third capacitor, a first end of the first capacitor is connected with a fifth interface of the controller, a second end of the first capacitor is grounded, a first end of the second capacitor is connected with a sixth interface of the controller, a second end of the second capacitor is connected with the second end of the first capacitor, a first end of the third capacitor is connected with the sixth interface of the controller, and a second end of the third capacitor is connected with a first signal output end.
[0012] In one embodiment, the first filter circuit further includes a first ESD diode, with a first terminal of the first ESD diode connected to a second signal output terminal, and a second terminal of the first ESD diode connected to the first signal output terminal.
[0013] In one embodiment, the first filter circuit further includes a second rheostat, the first end of which is connected to the first end of the third capacitor, and the second end of which is connected to the second signal output terminal.
[0014] In one embodiment, the second filter circuit includes a fourth capacitor, a fifth capacitor, and a sixth capacitor. The first terminal of the fourth capacitor is connected to the seventh interface of the controller, and the second terminal of the fourth capacitor is grounded. The first terminal of the fifth capacitor is connected to the eighth interface of the controller. The second terminal of the second capacitor is connected to the second terminal of the fourth capacitor. The first terminal of the sixth capacitor is connected to the eighth interface of the controller, and the second terminal of the sixth capacitor is connected to the first signal input terminal.
[0015] In one embodiment, the second filter circuit further includes a second ESD diode, with a first terminal of the second ESD diode connected to a second signal input terminal, and a second terminal of the second ESD diode connected to the first signal input terminal.
[0016] In one embodiment, the second filter circuit further includes a third rheostat, the first end of which is connected to the first end of the sixth capacitor, and the second end of which is connected to the second signal input terminal.
[0017] In the technical solution of this invention, the differential SSI communication circuit for new energy electric motorcycles includes:
[0018] Controller;
[0019] A signal input source, which is connected to the controller;
[0020] A first filtering circuit is connected to the controller and is used to receive electrical signals from the controller.
[0021] The encoder is used to receive the output signal of the filter circuit;
[0022] The second filtering circuit is connected to the controller and is used to receive signals from the encoder and transmit electrical signals to the controller. Therefore, in this application, interference received by the signal is reduced and the signal transmission quality is improved by using both the first and second filtering circuits. Attached Figure Description
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in these drawings without creative labor.
[0024] Figure 1 The circuit diagram of the new energy electric motorcycle magnetic differential SSI communication circuit of the embodiment of the present application.
[0025] The figure number explanation: 10, controller; 20, signal input source; 30, first filter circuit; 40, second filter circuit; C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; C5, fifth capacitor; C6, sixth capacitor; R1, first rheostat; R2, second rheostat; R3, third rheostat; R4, fourth rheostat; Q1, first ESD diode; Q2, second ESD diode.
[0026] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.
[0029] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0030] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.
[0031] Please refer to Figure 1 This invention provides a new energy electric motorcycle magnetic encoder differential SSI communication circuit:
[0032] Controller 10;
[0033] A signal input source 20 is connected to the controller 10, and a first variable resistor R1 is connected between the signal input source 20 and the controller 10;
[0034] A first filter circuit 30 is connected to the controller 10 and is used to receive electrical signals from the controller 10.
[0035] An encoder, wherein the encoder is used to receive the output signal of the filtering circuit;
[0036] The second filter circuit 40 is connected to the controller 10 and is used to receive signals from the encoder and transmit electrical signals to the controller 10.
[0037] The first filter circuit 30 includes a first capacitor C1, a second capacitor C2, and a third capacitor C3. The first end of the first capacitor C1 is connected to the fifth interface of the controller 10, and the second end of the first capacitor C1 is grounded. The first end of the second capacitor C2 is connected to the sixth interface of the controller 10, and the second end of the second capacitor C2 is connected to the second end of the first capacitor C1. The first end of the third capacitor C3 is connected to the sixth interface of the controller 10, and the second end of the third capacitor C3 is connected to the first signal output terminal.
[0038] The first filter circuit 30 further includes a first ESD diode Q1, with a first terminal of the first ESD diode Q1 connected to a second signal output terminal, and a second terminal of the first ESD diode Q1 connected to the first signal output terminal.
[0039] The first filter circuit 30 further includes a second rheostat R2, the first end of the second rheostat R2 is connected to the first end of the third capacitor C3, and the second end of the second rheostat R2 is connected to the second signal output terminal.
[0040] The second filter circuit 40 comprises a fourth capacitor C4, a fifth capacitor C5 and a sixth capacitor C6, a first end of the fourth capacitor C4 is connected with a seventh interface of the controller 10, a second end of the fourth capacitor C4 is grounded, a first end of the fifth capacitor C5 is connected with an eighth interface of the controller 10, a second end of the second capacitor C2 is connected with the second end of the fourth capacitor C4, a first end of the sixth capacitor C6 is connected with the eighth interface of the controller 10, and a second end of the sixth capacitor C6 is connected with the first signal input end.
[0041] The second filter circuit 40 further comprises a second ESD diode Q2, a first end of the second ESD diode Q2 is connected with the second signal input end, and a second end of the second ESD diode Q2 is connected with the first signal input end.
[0042] The second filter circuit 40 further comprises a third variable resistor R3, a first end of the third variable resistor R3 is connected with the first end of the sixth capacitor C6, and a second end of the third variable resistor R3 is connected with the second signal input end.
[0043] In the present application, the CLK signal is a clock signal sent by the MCU and transmitted to the controller 10 through the first variable resistor R1, wherein the first variable resistor R1 functions as an impedance matching resistor to reduce the reflection of the clock signal, and the controller 10 converts the DI data into differential signals Z and Y.
[0044] The frequencies of Z and Y are 1Mhz and 12-bit clock signals. Y and Z pass through the first filter circuit 30 composed of the first capacitor C1, the second capacitor C2 and the third capacitor C3, and the outgoing signals from the first ESD diode Q1 are SSI_CLK+ and SSI_CLK-.
[0045] The second variable resistor R2 is a terminal resistor used to eliminate signal reflection in the communication cable, and the first ESD diode Q1 is an ESD diode used to absorb static electricity and surge current on the signal line.
[0046] When the encoder receives the CLK signal, it will send out the data SSI_DATE. SSI_DATE+ and SSI_DATE- first pass through the second ESD diode Q2, and then pass through the second filter circuit 40 composed of the fourth capacitor C4, the fifth capacitor C5 and the sixth capacitor C6, and then enter the AB ends of the controller 10. The second ESD diode Q2 is used to absorb static electricity and surge current on the signal line, and the third variable resistor R3 is a terminal resistor used to eliminate signal reflection in the communication cable. The controller 10 converts the differential signals at the AB ends into a single-ended signal RO input, which flows through the fourth variable resistor R4 and enters the MCU. The fourth variable resistor R4 functions as an impedance matching resistor.
[0047] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural changes made under the concept of the present application, or direct / indirect application in other related technical fields, using the content of the present application specification and drawings, are included in the patent protection scope of the present application.
Claims
1. A new energy electric motorcycle magnetic differential SSI communication circuit, characterized in that, The new energy electric motorcycle magnetic differential SSI communication circuit comprises: a controller (10); a signal input source (20) connected with the controller (10); a first filter circuit (30) connected with the controller (10) and used for receiving an electrical signal of the controller (10); an encoder used for receiving an output signal of the filter circuit; a second filter circuit (40) connected with the controller (10) and used for receiving a signal of the encoder and transmitting an electrical signal to the controller (10).
2. The new energy electric motorcycle magnetic differential SSI communication circuit according to claim 1, characterized in that, A first variable resistor (R1) is connected between the signal input source (20) and the controller (10).
3. The new energy electric motorcycle magnetic differential SSI communication circuit according to claim 1, characterized in that, The first filter circuit (30) comprises a first capacitor (C1), a second capacitor (C2) and a third capacitor (C3), a first end of the first capacitor (C1) is connected with a fifth interface of the controller (10), a second end of the first capacitor (C1) is grounded, a first end of the second capacitor (C2) is connected with a sixth interface of the controller (10), a second end of the second capacitor (C2) is connected with the second end of the first capacitor (C1), a first end of the third capacitor (C3) is connected with the sixth interface of the controller (10), and a second end of the third capacitor (C3) is connected with a first signal output end.
4. The new energy electric motorcycle magnetic differential SSI communication circuit according to claim 3, characterized in that, The first filter circuit (30) further comprises a first ESD diode (Q1), a first end of the first ESD diode (Q1) is connected with a second signal output end, and a second end of the first ESD diode (Q1) is connected with the first signal output end.
5. The new energy electric motorcycle magnetic differential SSI communication circuit according to claim 4, characterized in that, The first filter circuit (30) further comprises a second variable resistor (R2), a first end of the second variable resistor (R2) is connected with the first end of the third capacitor (C3), and a second end of the second variable resistor (R2) is connected with the second signal output end.
6. The new energy electric motorcycle magnetic differential SSI communication circuit according to claim 3, characterized in that, The second filter circuit (40) comprises a fourth capacitor (C4), a fifth capacitor (C5) and a sixth capacitor (C6), a first end of the fourth capacitor (C4) is connected with a seventh interface of the controller (10), a second end of the fourth capacitor (C4) is grounded, a first end of the fifth capacitor (C5) is connected with an eighth interface of the controller (10), a second end of the second capacitor (C2) is connected with the second end of the fourth capacitor (C4), a first end of the sixth capacitor (C6) is connected with the eighth interface of the controller (10), and a second end of the sixth capacitor (C6) is connected with a first signal input end.
7. The new energy electric motorcycle magnetic differential SSI communication circuit according to claim 6, characterized in that, The second filter circuit (40) further comprises a second ESD diode (Q2), a first end of the second ESD diode (Q2) is connected with a second signal input end, and a second end of the second ESD diode (Q2) is connected with the first signal input end.
8. The new energy electric motorcycle magnetic differential SSI communication circuit according to claim 7, characterized in that, The second filter circuit (40) further comprises a third varistor (R3), a first end of the third varistor (R3) being connected to a first end of the sixth capacitor (C6), a second end of the third varistor (R3) being connected to the second signal input end.