Food processing machine

Abstract

The invention discloses a food processing machine comprising a master control circuit board and a slave control circuit board that carry out communication. A power module is arranged on the master control circuit board and outputs a first DC power supply with the voltage V1; and the first DC power supply is electrically connected to the slave control circuit board through a power supply line. Themaster control circuit board uses the first DC power supply as a baseband signal to modulate a master control communication signal into a carrier signal and transmits the carrier signal to the slave control circuit board. The slave control circuit board is provided with an LDO voltage regulator; the carrier signal passes through the LDO voltage regulator and then a slave control power supply is outputted. A slave control chip and a second voltage comparator are arranged on the slave control circuit board; and the carrier signal is demodulated by the second voltage comparator and then the demodulated signal is outputted to the slave control chip. Signal transmission is performed by a multiplexing power supply line; and a DC power supply is extracted from the carrier signal by using the LDOvoltage regulator and the transmitted signal is obtained by using the voltage comparator simultaneously.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a food processing machine. Background technique [0002] At present, there are more and more types of food processors, such as broken wall cooking machines, soybean milk machines, etc., and more and more functions and forms, such as making soybean milk, fruit juice, ice cream / milkshake, crushed ice, rice paste, fine grinding and Minced meat, etc., and the motor is placed on the top, the motor is placed on the bottom, or the display operation is placed on the side, etc., resulting in multiple functions and functions. At this time, corresponding controls need to be set at different positions, and communication between different controls is required. In addition, food processors have a variety of working status signals that need to be collected by the acquisition unit, such as overflow prevention signals, water level signals, temperature signals, cup identification signals, lid openin...

AI Technical Summary

Problems solved by technology

The current transmission method is that the coupler has multiple coupling ports, and at least one power port is used to transmit the power supply output by the control power board to the signal acquisition unit. In addition, the cup body is provided with several signal acquisition units, then It is necessary to set several coupling ports on the coupler to transmit the collected signals. At this time, the number of ports of the coupler is large, resulting in an increase in the size of the coupler, and its processing, manufacturing costs, installation complexity, etc. are corresponding At the same time, because of the contact connection of the coupler, the original signal is attenuated, resulting in the problem of inaccurate signal detection.

[0004] Although in the prior art, there is a detection chip installed on the cup body, the collected signal is processed by the detection chip and then transmitted through the coupler port, but at this time, the detection chip and the control power board need to carry out two-way communication, and it is inevitable Two coupled ports are required, which is not an effective solution to the coupler design

In addition, there is also a method of wirelessly transmitting signals in the prior art, but although this transmission method can solve the above problems, its cost is relatively high, and wireless transmission will bring problems such as signal accuracy, cost, and electromagnetic interference. , and the installation of coils involved in wireless transmission also has certain requirements for installation space

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