Sewing machine and analog signal transmission system thereof
An analog signal and transmission system technology, applied in the field of signal transmission, can solve the problems of large temperature drift, general accuracy and high price, and achieve the effect of low error, guaranteed accuracy and good real-time performance.
Pending Publication Date: 2022-06-03
ZHEJIANG ZOBOW MECHANICAL & ELECTRICAL TECH
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[0027] The core of the present invention is to provide an analog signal transmission system for a sewing machine, which is beneficial to effectively guarantee the precision of the isolated transmission of the analog signal while realizing the isolated transmission of the analog signal.
[0028] In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0029] Please refer to figure 1 , figure 1 It is a schematic structural diagram of an analog signal transmission system of a sewing machine in th...
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The invention discloses an analog signal transmission system of a sewing machine, and the system comprises an analog signal generation circuit which is used for generating an analog signal; the analog-to-digital conversion circuit is connected with the analog signal generation circuit and used for converting the analog signal into a digital pulse signal, and the analog-to-digital conversion circuit is an APC circuit or a VF circuit; wherein the APC circuit is used for converting an analog signal into a digital pulse signal of which the frequency is fixed and the duty ratio is related to the amplitude of the analog signal, and the VF circuit is used for converting the analog signal into a digital pulse signal of which the frequency is related to the amplitude of the analog signal; the isolating circuit is connected with the analog-to-digital conversion circuit and is used for isolating and transmitting the digital pulse signal; and a restoration circuit connected with the isolation circuit and used for restoring the analog signal according to the received digital pulse signal. By applying the scheme of the invention, the precision of analog signal isolation transmission can be effectively guaranteed. The invention further discloses the sewing machine which has the corresponding technical effects.
Description
technical field [0001] The invention relates to the technical field of signal transmission, in particular to a sewing machine and an analog signal transmission system thereof. Background technique [0002] Currently, there are two main types of signals used in the electronics of sewing machines: analog signals and digital signals. Compared with digital signals, analog signals can transmit more information, so the information contained in analog signals can be used to make electronic equipment more rich in functions and superior in performance. [0003] Moreover, in the current industrial sewing machine industry, in order to reduce the overall cost of the electronic control system, a hot ground solution is adopted, that is, the control circuit in the electronic control system will share the ground with the motor drive circuit, but it needs to be connected with the input and output circuits. Electrical isolation, that is, if an analog signal is input into the electronic contr...
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IPC IPC(8): H03M1/12H03K19/14D05B19/02
CPCH03M1/12H03K19/14D05B19/02
Inventor 高豆豆万汉亮王琼
Owner ZHEJIANG ZOBOW MECHANICAL & ELECTRICAL TECH