Signal processing circuit of electric push rod encoder

Abstract

The utility model discloses an electric push rod encoder signal processing circuit comprising a first resistor, one end of which is connected with an external power supply; one end of the filter circuit is connected with the other end of the first resistor; and one end of the signal driving circuit is connected with the filtering circuit, and the other end of the signal driving circuit is connected with an external single chip microcomputer. The electric push rod encoder signal processing circuit of the utility model can remove burr signals or interference signals existing in signals collected by the encoder, thereby ensuring the counting accuracy of a single-chip microcomputer.

Description

Technical Field

[0001] The utility model relates to the technical field of encoder signal processing, in particular to an electric push rod encoder signal processing circuit. Background Art

[0002] Fitness equipment that uses electric linear actuators now usually installs encoders to measure the number of pulses. The number of pulses is related to the distance the linear actuator can be extended or retracted. Each time a pulse is generated, the linear actuator can be extended or retracted a fixed distance. The encoder transmits the collected pulse number to the microcontroller, which counts it.

[0003] However, the signals collected by the encoder may contain glitch signals or interference signals due to electromagnetic interference, circuit noise or other factors in the signal transmission line. When these signals are transmitted to the microcontroller and the microcontroller counts, these glitch signals or interference signals may cause the microcontroller to miscalculate when counting, which makes it impossible for users of the fitness equipment to accurately know the specific number of exercises. Utility Model Content

[0004] According to an embodiment of the utility model, there is provided an electric push rod encoder signal processing circuit, comprising:

[0005] A first resistor, one end of which is connected to an external power source;

[0006] A filter circuit, one end of the filter circuit is connected to the other end of the first resistor;

[0007] A signal driving circuit, one end of the signal driving circuit is connected to the filtering circuit, and the other end is connected to an external single chip microcomputer.

[0008] Further, the filtering circuit comprises: a second resistor and a capacitor;

[0009] One end of the second resistor is connected to the signal input end of the encoder, and the other end of the second resistor is connected to one end of the capacitor;

[0010] The other end of the capacitor is connected to the signal driving circuit.

[0011] Further, the signal driving circuit comprises: a bus driver;

[0012] The A pin of the bus driver is connected to a connection point of the second resistor and the capacitor;

[0013] The GND pin of the bus driver is connected to the other end of the capacitor;

[0014] The Y pin of the bus driver is connected to the microcontroller.

[0015] Furthermore, the resistance value of the first resistor is greater than the resistance value of the second resistor.

[0016] According to the electric push rod encoder signal processing circuit of the embodiment of the utility model, the burr signal or interference signal existing in the signal collected by the encoder can be removed, thereby ensuring the accuracy of the single chip microcomputer counting.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a circuit diagram of an electric push rod encoder signal processing circuit according to an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0020] First, combine Figure 1 The electric push rod encoder signal processing circuit according to the embodiment of the utility model is described, and its application scenarios are very wide.

[0021] like Figure 1 As shown, the electric push rod encoder signal processing circuit of the embodiment of the utility model comprises a first resistor 1, a filter circuit 2 and a signal driving circuit 3.

[0022] Specifically, Figure 1 As shown, one end of the first resistor 1 is connected to an external power supply; one end of the filter circuit 2 is connected to the other end of the first resistor 1; one end of the signal driving circuit 3 is connected to the filter circuit 2, and the other end is connected to an external single chip microcomputer.

[0023] Further, if Figure 1 As shown, the filter circuit 2 includes: a second resistor 21 and a capacitor 22; one end of the second resistor 21 is connected to the signal input end of the encoder, and the other end of the second resistor 21 is connected to one end of the capacitor 22; the other end of the capacitor 22 is connected to the signal driving circuit 3. The encoder signal passes through the filter circuit 2 to remove the burr signal or interference signal, ensuring that the signal collected by the single-chip microcomputer is more accurate.

[0024] Further, if Figure 1 As shown, the signal driving circuit 3 includes: a bus driver 31; an A pin of the bus driver 31 is connected to the connection point of the second resistor 21 and the capacitor 22; a GND pin of the bus driver 31 is connected to the other end of the capacitor 22; and a Y pin of the bus driver 31 is connected to the microcontroller.

[0025] Furthermore, the resistance of the first resistor 1 is greater than the resistance of the second resistor 21. In this embodiment, the resistance of the first resistor 1 determines the charging time of the capacitor 22, and the resistance of the second resistor 21 determines the discharging time of the capacitor 22.

[0026] In this embodiment, the encoder signals ZuobiPulA and ZuobiPulB will pass through the filtering circuit 2 to remove the burr signals or interference signals in the signals, and then pass through the A pin of the bus driver 31, and finally flow out from the Y pin of the bus driver, flow to the microcontroller, and be collected by the microcontroller.

[0027] Above, refer to Figure 1 The present invention describes an electric push rod encoder signal processing circuit according to an embodiment of the utility model, which can remove burr signals or interference signals existing in the signals collected by the encoder, thereby ensuring the accuracy of single-chip microcomputer counting.

[0028] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. An electric push rod encoder signal processing circuit, characterized in that: Include: A first resistor, one end of which is connected to an external power source; a filter circuit, one end of which is connected to the other end of the first resistor; A signal driving circuit, one end of which is connected to the filtering circuit, and the other end of which is connected to an external single chip microcomputer.

2. The electric push rod encoder signal processing circuit according to claim 1, characterized in that: The filtering circuit comprises: a second resistor and a capacitor; One end of the second resistor is connected to the signal input end of the encoder, and the other end of the second resistor is connected to one end of the capacitor; The other end of the capacitor is connected to the signal driving circuit.

3. The electric push rod encoder signal processing circuit according to claim 2, characterized in that: The signal driving circuit comprises: a bus driver; The A pin of the bus driver is connected to a connection point between the second resistor and the capacitor; The GND pin of the bus driver is connected to the other end of the capacitor; The Y pin of the bus driver is connected to the single chip microcomputer.

4. The electric push rod encoder signal processing circuit according to claim 2, characterized in that: The resistance value of the first resistor is greater than the resistance value of the second resistor.

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