Universal controller circuit for popular science exhibits

Abstract

The utility model provides a universal controller circuit for popular science exhibits. Comprising a main control chip, and a power supply module, a digital signal acquisition module, an analog quantity acquisition module, a quadrature encoder / pulse input module, a level conversion module, an RS485 serial port communication module, an RS232 serial port communication module, a TTL interface module, a PWM pulse output module and a 24V relay control module which are electrically connected with the main control chip. According to the utility model, the main control chip is used for controlling each functional module to realize the corresponding functions of data acquisition, coding, data conversion, communication, control and the like, the conventional science and technology museum exhibits are simplified, the corresponding various functions can be realized, and the technical problems of electronic control design, development and manufacturing of the exhibits are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of popular science exhibits, specifically a universal controller circuit for popular science exhibits. Background Art

[0002] Science and technology museums are public welfare institutions dedicated to science education, with exhibitions as their primary function. Through permanent and temporary exhibitions, as well as related educational activities, they aim to stimulate visitors' interest in science, popularize scientific knowledge, cultivate scientific thinking and methods, and inspire scientific innovation. Therefore, exhibits are a crucial vehicle for science and technology museums to carry out science education.

[0003] In order to attract visitors to experience and guide them to explore by themselves, the exhibits in science and technology museums are usually very interesting and interactive. For example, visitors can use traditional interactive methods such as pressing buttons, pushing and pulling handles, shaking joysticks, and rotating disks, or new multimedia interactive forms such as image recognition and touch screen interaction to make the exhibits change and move accordingly, thereby enabling the audience to acquire scientific knowledge and scientific ideas. The excellent interactivity of these exhibits comes from their use of a large number of control devices and functions.

[0004] Currently, science and technology museum exhibits utilize a wide variety of control devices. Product-based devices include programmable logic controllers (PLCs), computer interface boards, and peripheral data acquisition modules. Non-product-based control devices include circuit boards manufactured by exhibit manufacturers or modified product-based devices. While these devices can also achieve interactive control of exhibits, they lack the specificity of exhibit control. To achieve interactivity, a single exhibit may require several control devices, and different exhibit manufacturers may use different types of control devices.

[0005] At present, the emergence of complete sets of electronic exhibits can preliminarily solve the above-mentioned exhibit development problems and meet the control needs of some exhibits. However, in actual use, it is found that some of their functions are not satisfied, the number of channels for some functions is insufficient, and the frequency of use of some functions is low. At the same time, the cost is relatively high when used for simple exhibits. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide a universal controller circuit for popular science exhibits, so as to solve the problems of the prior art mentioned in the above background technology.

[0007] To solve the above technical problems, an embodiment of the present utility model provides the following technical solutions: a universal controller circuit for popular science exhibits, comprising a main control chip, a power supply module, a digital signal acquisition module, an analog quantity acquisition module, an orthogonal encoder / pulse input module, a level conversion module, an RS485 serial communication module, an RS232 serial communication module, a TTL interface module, a PWM pulse output module, and a 24V relay control module. The main control chip is electrically connected to the power supply module, the digital signal acquisition module, the analog quantity acquisition module, the orthogonal encoder / pulse input module, the level conversion module, the RS485 serial communication module, the RS232 serial communication module, the TTL interface module, the PWM pulse output module, and the 24V relay control module.

[0008] Furthermore, the main control chip is an STM32F103ZET6 single-chip microcomputer.

[0009] Furthermore, the power module is a DC output power supply based on LM2576-5 and SPX1587AT-3.3 chips, and the output end of the LM2576-5 chip is connected to the SPX1587AT-3.3 chip, wherein the LM2576-5 outputs 5V and the SPX1587AT-3.3 outputs 3.3V.

[0010] Furthermore, the digital signal acquisition module is a PC847 chip.

[0011] Furthermore, the analog quantity acquisition module is a non-inverting amplifier circuit based on the LM358D operational amplifier.

[0012] Furthermore, the 24V relay control module includes a PC847 chip and multiple sets of triode amplifier circuits, and the PC847 chip is connected to the multiple sets of triode amplifier circuits.

[0013] Furthermore, the PWM pulse output module is a TLP104 chip.

[0014] Furthermore, the level conversion module is a 3.3-5V input and output bidirectional conversion circuit based on the SN74LVC4245DW chip.

[0015] The beneficial effects of the above technical solution of the utility model are as follows:

[0016] The utility model realizes corresponding data acquisition, encoding, data conversion, communication, control and other functions through the main control chip, which controls the digital signal acquisition module, analog acquisition module, orthogonal encoder / pulse input module, level conversion module, RS485 serial communication module, RS232 serial communication module, TTL interface module, PWM pulse output module and 24V relay control module. It simplifies the existing science and technology museum exhibits and can also realize corresponding diverse functions, thus solving the technical problems of exhibit electronic control design, development and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a circuit diagram of a universal controller for popular science exhibits of the present utility model;

[0018] Figure 2 This is the circuit schematic diagram of the power module of the utility model;

[0019] Figure 3 This is the circuit schematic diagram of the digital signal acquisition module of the utility model;

[0020] Figure 4 This is the circuit principle diagram of the analog quantity acquisition module of the utility model;

[0021] Figure 5 This is the circuit schematic diagram of the 24V relay control module of the utility model;

[0022] Figure 6 This is the circuit principle diagram of the PWM pulse output module of the utility model;

[0023] Figure 7 This is a circuit schematic diagram of the level conversion module of the present utility model;

[0024] Figure 8 This is the circuit schematic diagram of the RS485 serial communication module of the present utility model;

[0025] Figure 9 This is the circuit principle diagram of the orthogonal encoder / pulse input module of the present utility model. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1As shown, a universal controller circuit for popular science exhibits includes a main control chip, a power supply module, a digital signal acquisition module, an analog quantity acquisition module, an orthogonal encoder / pulse input module, a level conversion module, an RS485 serial port communication module, an RS232 serial port communication module, a TTL interface module, a PWM pulse output module, and a 24V relay control module. The main control chip is electrically connected to the power supply module, the digital signal acquisition module, the analog quantity acquisition module, the orthogonal encoder / pulse input module, the level conversion module, the RS485 serial port communication module, the RS232 serial port communication module, the TTL interface module, the PWM pulse output module, and the 24V relay control module.

[0028] The main control chip is the STM32F103ZET6 microcontroller.

[0029] like Figure 2 As shown, the power module is a DC output power supply based on the LM2576-5 and SPX1587AT-3.3 chips. The output end of the LM2576-5 chip is connected to the SPX1587AT-3.3 chip, where the LM2576-5 outputs 5V and the SPX1587AT-3.3 outputs 3.3V.

[0030] like Figure 3 As shown, the digital signal acquisition module is a PC847 chip.

[0031] like Figure 4 As shown in the figure, the analog acquisition module is a non-inverting amplifier circuit based on the LM358D operational amplifier.

[0032] like Figure 5 As shown, the 24V relay control module includes a PC847 chip and multiple sets of triode amplifier circuits, and the PC847 chip is connected to the multiple sets of triode amplifier circuits.

[0033] like Figure 6 As shown, the PWM pulse output module is a TLP104 chip.

[0034] like Figure 7 As shown in FIG, the level conversion module is a 3.3-5V input and output bidirectional conversion circuit based on the SN74LVC4245DW chip.

[0035] like Figure 8 The figure shows the circuit schematic diagram of the RS485 serial communication module.

[0036] like Figure 9 As shown, the quadrature encoder / pulse input module uses the HCPL0631 chip.

[0037] The utility model realizes corresponding data acquisition, encoding, data conversion, communication, control and other functions through the main control chip, which controls the digital signal acquisition module, analog acquisition module, orthogonal encoder / pulse input module, level conversion module, RS485 serial communication module, RS232 serial communication module, TTL interface module, PWM pulse output module and 24V relay control module. It simplifies the existing science and technology museum exhibits and can also realize corresponding diverse functions, thus solving the technical problems of exhibit electronic control design, development and production.

[0038] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A universal controller circuit for popular science exhibits, characterized in that: It includes a main control chip, a power supply module, a digital signal acquisition module, an analog quantity acquisition module, an orthogonal encoder / pulse input module, a level conversion module, an RS485 serial port communication module, an RS232 serial port communication module, a TTL interface module, a PWM pulse output module, and a 24V relay control module. The main control chip is electrically connected to the power supply module, the digital signal acquisition module, the analog quantity acquisition module, the orthogonal encoder / pulse input module, the level conversion module, the RS485 serial port communication module, the RS232 serial port communication module, the TTL interface module, the PWM pulse output module, and the 24V relay control module.

2. The universal controller circuit for popular science exhibits according to claim 1, characterized in that: The main control chip is an STM32F103ZET6 single chip microcomputer.

3. The universal controller circuit for popular science exhibits according to claim 1, characterized in that: The power supply module is a DC output power supply based on the LM2576-5 and SPX1587AT-3.3 chips. The output end of the LM2576-5 chip is connected to the SPX1587AT-3.3 chip, wherein the LM2576-5 outputs 5V and the SPX1587AT-3.3 outputs 3.3V.

4. The universal controller circuit for popular science exhibits according to claim 1, characterized in that: The digital signal acquisition module is a PC847 chip.

5. The universal controller circuit for popular science exhibits according to claim 1, characterized in that: The analog quantity acquisition module is a non-inverting amplifier circuit based on the LM358D operational amplifier.

6. The universal controller circuit for popular science exhibits according to claim 1, characterized in that: The 24V relay control module includes a PC847 chip and multiple sets of triode amplifier circuits, and the PC847 chip is connected to the multiple sets of triode amplifier circuits.

7. The universal controller circuit for popular science exhibits according to claim 1, characterized in that: The PWM pulse output module is a TLP104 chip.

8. The universal controller circuit for popular science exhibits according to claim 1, characterized in that: The level conversion module is a 3.3-5V input and output bidirectional conversion circuit based on the SN74LVC4245DW chip.

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