Two-wire speed control circuit of sewing machine
A sewing machine and circuit technology, applied in the field of two-wire circuit control, can solve problems such as complex circuit structure, weak anti-interference ability, waste of line resources, etc., and achieve the effect of optimizing the circuit structure
Pending Publication Date: 2020-09-15
陕西精一工业科技有限公司
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Problems solved by technology
[0005] The present invention provides a two-wire speed control circuit for sewing machines. By connecting the two-wire transmission circuit between the speed control device and the main control system of the sewing machine, the conversion between high and low level signals and current signals is realized, and the signal is transmitted through two wires. , providing a new idea of signal transmission from three wires to two wires, and at the same time effectively solving the problems of waste of line resources, complex circuit structure, and weak anti-interference ability
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[0021] In the following description, the technical solutions in the embodiments of the present invention are clearly and completely described. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0022] Embodiment 1 of the present invention provides a sewing machine two-wire speed control circuit, such as figure 1 As shown, it includes a speed control module, a transmission circuit and the main control system of the sewing machine. The speed control module is connected with the position sensor installed on the sewing machine pedal, and the position sensor collects the information of the pedal according to the strength of the user's stepping on the pedal. position signal, and transmit the el...
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The invention provides a two-wire speed control circuit of a sewing machine. The invention relates to the field of two-wire circuit control. The circuit is characterized in that the circuit comprisesa speed control module, a transmission circuit and a sewing machine main control system. The transmission circuit comprises a sending terminal and an output terminal. The sending terminal and the output terminal connect the speed control module with the sewing machine main control system through a power line and a ground wire, and an electric signal with position information received by the speedcontrol module is transmitted to the sewing machine main control system through the transmission circuit, so that the speed information is transmitted in a specific two-line system.
Description
technical field [0001] The invention relates to the field of two-wire circuit control, in particular to a two-wire speed control circuit for a sewing machine. Background technique [0002] Compared with the early sewing machine, the electric sewing machine needs manpower to control the movement of the pedal to make the sewing machine work, and the working speed of the sewing machine is also determined by the speed of the foot; while the electric sewing machine is controlled by the electric motor, which reduces the labor of manpower. input, but operations such as acceleration and deceleration also require manual manipulation of speed control devices such as pedals to send instructions. The purpose of the pedal here is different from that in the early days. It only needs to use different pedaling methods to generate different signals and transmit them to the processor. The processor controls the movement of the motor by obtaining these signals, thereby realizing different sewi...
Claims
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257
Inventor 赵晓春
Owner 陕西精一工业科技有限公司