Intelligent electronic table card system
Through the design of adaptive circuits and protection circuits, the problems of high energy consumption and easy damage of components in the electronic table card system are solved, automatic brightness adjustment and component protection are achieved, and the energy-saving efficiency and service life of the system are improved.
Patent Information
- Application Number
- CN202423015577.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing electronic table card systems consume large amounts of power and lack protection for circuit components, resulting in wasted energy, easy damage to circuit components, and a short maintenance cycle.
Adaptive circuits and protection circuits are used, combined with photoresistors and PMOS tubes to achieve automatic brightness adjustment and voltage protection, reduce energy consumption and extend the life of circuit components.
The system can automatically adjust the brightness of the table card system, reduce energy consumption, protect circuit components, extend service life, and reduce repair and maintenance costs.
Smart Images
Figure CN223486683U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic display technology, and in particular to an intelligent electronic table card system. Background Technology
[0002] In conferences, exhibitions, banquets, and other occasions, nameplates are widely used as devices to identify table information. However, traditional nameplates are usually made of paper, which has problems such as inconvenient information updates, easy damage, and environmental unfriendliness. With the development of technology, electronic display technology has gradually matured, and electronic nameplates have become popular due to their advantages such as rapid information updates, reusability, and energy saving. However, existing electronic nameplate products still need improvement in terms of automatic power consumption adjustment. Existing nameplate systems have high power consumption and poor stability. They cannot adjust their brightness according to the ambient light source, wasting a lot of electricity. Furthermore, the self-adjusting brightness lacks protection for circuit components, resulting in a short maintenance cycle and easy damage to circuit components. Utility Model Content
[0003] In view of the shortcomings of the prior art, this utility model provides an intelligent electronic table card system, which solves the technical problems of high power consumption and lack of protection for circuit components in the prior art, and achieves the purpose of effectively reducing the power consumption of the table card system and effectively protecting the components in the circuit.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an intelligent electronic table card system, including a display screen for displaying table card content, a processing module for inputting display content to the display screen, a transformer circuit and a power supply circuit, wherein an energy-saving circuit for reducing the energy consumption of the display screen is provided between the display screen and the transformer circuit, and the energy-saving circuit consists of an adaptive circuit and a protection circuit.
[0005] Preferably, the adaptive circuit consists of a protection voltage, an adjusting resistor R2, a current-limiting resistor R3, a photoresistor R4, a fixed resistor R5, a detector, and an adaptive voltage. The protection voltage is connected in series with the adjusting resistor R2 and the current-limiting resistor R3 and is connected to the positive input port of the detector. The photoresistor R4 and the fixed resistor R5 are connected in parallel with the adjusting resistor R2 and the current-limiting resistor R3 and are connected to the negative input port of the detector. The output of the detector outputs the adaptive voltage to the display screen.
[0006] Preferably, the protection circuit consists of a power supply voltage, a fixed resistor R7, a Zener diode D1, a fixed resistor R9, and a PMOS transistor Q2. The power supply voltage is connected to the gate of the PMOS transistor Q2 in sequence through the fixed resistor R7, the Zener diode D1, and the fixed resistor R9. The power supply voltage is also connected to the source of the PMOS transistor Q2. A fixed resistor R8 is connected between the Zener diode D1 and the fixed resistor R7. The fixed resistor R8 is connected to the base of the transistor Q1. The emitter of the transistor Q1 is connected in parallel with the fixed resistor R7. The collector of the transistor Q1 is connected between the fixed resistor R9 and the gate of the PMOS transistor Q2. A shunt resistor R6 is connected in parallel between the collector and emitter of the transistor Q1. The drain of the PMOS transistor Q2 outputs a protection voltage.
[0007] Preferably, the transformer circuit consists of an output voltage, a transformer processor, and a current-limiting resistor R1. The output voltage is connected to the Vin port of the transformer processor, and the Vout port of the transformer processor outputs the power supply voltage to the outside through the current-limiting resistor R1. A capacitor C5 is connected in parallel between the Vin port and the GND terminal of the transformer processor, and a capacitor C6 is connected in parallel between the Vout port and the GND terminal of the transformer processor.
[0008] Preferably, the power supply circuit consists of an external power supply, a rectifier circuit, and a power supply processor. The external power supply is connected to the Vin port and GND port of the power supply processor through the rectifier circuit, and the Vout port of the power supply processor outputs the output voltage to the transformer circuit.
[0009] Preferably, filter capacitors C1 and C2 are connected in parallel between the Vin port and GND port of the power supply processor, and filter capacitors C3 and C4 are connected in parallel between the Vout port and GND port of the power supply processor.
[0010] Preferably, the display screen is model AS-OD753M4, the processing module is model VK1S68C, the transformer processor is model AMS1117, and the power supply processor is model IM7805.
[0011] By employing the above technical solution, this utility model provides an intelligent electronic table card system, which has at least the following beneficial effects:
[0012] 1. This utility model, through the function of adaptive circuitry, can reduce energy consumption in a sunny environment, allowing the table sign display screen to reduce energy consumption while displaying content. In a darker environment, it provides a certain level of brightness to the display screen, ensuring that the brightness meets the viewer's needs while avoiding excessive brightness that wastes electricity. This achieves the automatic brightness adjustment function of the table sign, eliminating the need for manual adjustment and improving user convenience and energy efficiency.
[0013] 2. This utility model protects the circuit through a protection circuit. Since the voltage is unstable during the adjustment of the display screen, if the voltage is too high, it can easily damage the electronic components in the circuit, causing damage to the table card system and increasing maintenance costs. The protection circuit can effectively protect the circuit components, avoid damage to components due to excessive voltage, increase the service life of the table card system, and reduce maintenance costs. Attached Figure Description
[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0015] Figure 1 This is a structural block diagram of an intelligent electronic table card system according to the present invention;
[0016] Figure 2 This is a circuit diagram of the adaptive circuit of this utility model;
[0017] Figure 3 This is a circuit diagram of the protection circuit of this utility model;
[0018] Figure 4 This is the circuit diagram of the transformer circuit of this utility model;
[0019] Figure 5 The circuit diagram is for the power supply circuit of this utility model.
[0020] In the diagram: 1. Display screen; 2. Processing module; 3. Energy-saving circuit; 31. Adaptive circuit; 32. Protection circuit; 4. Transformer circuit; 5. Power supply circuit. Detailed Implementation
[0021] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. This will allow for a full understanding and implementation of how this application uses technical means to solve technical problems and achieve technical effects.
[0022] Due to the high power consumption and lack of protection for circuit components in existing technologies, please refer to... Figure 1 - Figure 5This embodiment provides an intelligent electronic table card system that can effectively reduce the power consumption of the table card system and effectively protect the components in the circuit. The electronic table card system includes a display screen 1 for displaying the table card content, a processing module 2 for inputting the display content to the display screen 1, a transformer circuit 4, and a power supply circuit 5. An energy-saving circuit 3 for reducing the energy consumption of the display screen 1 is set between the display screen 1 and the transformer circuit 4. The energy-saving circuit 3 consists of an adaptive circuit 31 and a protection circuit 32. The adaptive circuit 31 consists of a protection voltage, an adjusting resistor R2, a current-limiting resistor R3, a photoresistor R4, a fixed resistor R5, a detector, and the adaptive voltage. The protection voltage is connected in series with the adjusting resistor R2 and the current-limiting resistor R3 and is connected to the positive input port of the detector. The photoresistor R4 and the fixed resistor R5 are connected in series with the adjusting resistor R2 and the current-limiting resistor R5. 3 are connected in parallel and connected to the negative input port of the detector. The output of the detector outputs an adaptive voltage to the display screen 1. The protection circuit 32 consists of a power supply voltage, a fixed resistor R7, a Zener diode D1, a fixed resistor R9, and a PMOS transistor Q2. The power supply voltage is connected to the gate of the PMOS transistor Q2 in sequence through the fixed resistor R7, the Zener diode D1, and the fixed resistor R9. The power supply voltage is connected to the source of the PMOS transistor Q2. A fixed resistor R8 is connected between the Zener diode D1 and the fixed resistor R7. The fixed resistor R8 is connected to the base of the transistor Q1. The emitter of the transistor Q1 is connected in parallel with the fixed resistor R7. The collector of the transistor Q1 is connected between the fixed resistor R9 and the gate of the PMOS transistor Q2. A shunt resistor R6 is connected in parallel between the collector and emitter of the transistor Q1. The drain of the PMOS transistor Q2 outputs a protection voltage.
[0023] This invention regulates the current and voltage generated by the protection voltage through adjusting resistor R2, ensuring that the protection voltage, after passing through adjusting resistor R2 and current-limiting resistor R3, produces a fixed current and voltage. Simultaneously, the photoresistor R4 and fixed resistor R5 automatically adjust the current and voltage based on the ambient light intensity. When the ambient light intensity weakens, such as during a party where the lights are typically focused on the stage and the audience area is unlit, the resistance of photoresistor R4 increases, and the current and voltage at the negative input port of the detector decrease, falling below the fixed current and voltage at the positive input port. Because the light intensity is very low, the table sign requires minimal light to function as a display screen. The detector then selects a smaller current... If the light intensity is high, the resistance of the photoresistor R4 decreases, and the current and voltage at the negative input port of the detector increase, exceeding the fixed current and voltage at the positive input port. At this time, the detector outputs a relatively small fixed current and voltage at the positive input port. Through the adaptive circuit, energy consumption is reduced in bright sunlight, allowing the table sign display to reduce energy consumption while displaying content. In darker environments, it provides sufficient brightness for the display, meeting the viewer's needs while avoiding excessive brightness that wastes energy. This achieves automatic brightness adjustment of the table sign, eliminating the need for manual adjustment, improving user convenience, and enhancing energy efficiency.
[0024] This invention utilizes electronic components in the PMOS transistor Q2 protection circuit, along with fixed resistors R7 and R9, Zener diode D1, and transistor Q1, to detect abnormal voltages. When the supply voltage is less than 3.1V (e.g., at 3V), the Zener diode's turn-on voltage is 3.1V, so Zener diode D1 does not conduct, and therefore transistor Q1 will not conduct. Then, the gate of PMOS transistor Q2 is pulled to 0V by fixed resistor R9, and PMOS transistor Q2 conducts, outputting a voltage of 3V. If the supply voltage is around 3.3V, the Zener diode D1's turn-on voltage is 3.1V, so Zener diode D1 conducts. The emitter voltage of transistor Q1 is 3.3V, and the base voltage is 3.1V, so transistor Q1 still does not conduct, and PMOS transistor Q2 conducts normally, outputting a voltage of around 3.3V. If the supply voltage is too high (e.g., 3.9V), Zener diode D1... The turn-on voltage is 3.1V, so it conducts. The voltage drop across the fixed resistor R7 is 0.8V. The emitter voltage of the transistor is 3.9V and the base voltage is 3.3V, so transistor Q1 conducts. The gate voltage of PMOS transistor Q2 becomes 3.9V, so PMOS transistor Q2 does not conduct, and there is no output voltage. In the protection circuit, capacitor C7 filters the AC current, and shunt resistor R6 shunts the current, reducing the current of transistor Q1 and protecting it. Through the operation of the protection circuit, the voltage is in an unstable state during the adjustment of the display screen. If the voltage is too high, it can easily damage the electronic components in the circuit, causing damage to the table card system and increasing maintenance costs. The protection circuit can effectively protect the circuit components, avoid damage to components due to excessive voltage, increase the service life of the table card system, and reduce maintenance costs.
[0025] Because the power supply voltage to the display screen can easily exceed the display screen's operating voltage during power transmission, please refer to... Figure 4 The transformer circuit 4 consists of an output voltage, a transformer processor, and a current-limiting resistor R1. The output voltage is connected to the Vin port of the transformer processor. The Vout port of the transformer processor outputs the power supply voltage to the outside through the current-limiting resistor R1. A capacitor C5 is connected in parallel between the Vin port and the GND terminal of the transformer processor, and a capacitor C6 is connected in parallel between the Vout port and the GND terminal of the transformer processor.
[0026] This invention uses a transformer processor to convert the output voltage to a voltage suitable for the normal operation of the display screen 1. For example, if the output voltage is 5V, which is higher than the operating voltage of the display screen 1, the transformer processor converts the 5V voltage to the normal operating voltage of the display screen 1, 3V. The current is limited by a current-limiting resistor R1 to ensure the safety of the circuit. At the same time, the processing voltage is output to the processing module, where the output voltage is equal to the processing voltage. The transformer circuit reduces the voltage higher than the operating voltage of the display screen to the normal operating voltage of the display screen, enabling the display screen to operate under normal voltage and thus extending the service life of the display screen.
[0027] Since the table card system requires a stable power supply voltage during use, please refer to... Figure 5 The power supply circuit 5 consists of an external power supply, a rectifier circuit, and a power supply processor. The external power supply is connected to the Vin port and GND port of the power supply processor through the rectifier circuit. The Vout port of the power supply processor outputs the output voltage to the transformer circuit 4. Filter capacitors C1 and C2 are connected in parallel between the Vin port and GND port of the power supply processor, and filter capacitors C3 and C4 are connected in parallel between the Vout port and GND port of the power supply processor. The model of the display screen 1 is AS-OD753M4, the model of the processing module 2 is VK1S68C, the model of the transformer processor is AMS1117, and the model of the power supply processor is IM7805.
[0028] This invention is powered by an external power supply. The current from the external power supply is rectified by a rectifier circuit, and the rectified current is converted into a lower voltage, such as 5V, by a power supply processor. At the same time, the current is filtered by filter capacitors C1, C2, C3 and C4 to make the output current more stable and improve the response speed. Through the effect of the power supply voltage, a lower and more stable output voltage is provided for the table card system, improving the voltage response speed and making the table card system smoother and safer to use.
[0029] The above embodiments provide a detailed description of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.
Claims
1. An intelligent electronic table card system, comprising a display screen (1) for displaying table card content, a processing module (2) for inputting display content to the display screen (1), a transformer circuit (4), and a power supply circuit (5), characterized in that, An energy-saving circuit (3) for reducing the energy consumption of the display screen (1) is provided between the display screen (1) and the transformer circuit (4). The energy-saving circuit (3) consists of an adaptive circuit (31) and a protection circuit (32). The adaptive circuit (31) consists of a protection voltage, an adjustment resistor R2, a current limiting resistor R3, a photoresistor R4, a fixed resistor R5, a judge, and an adaptive voltage. The protection voltage is connected in series with the adjustment resistor R2 and the current limiting resistor R3 and is connected to the positive input port of the judge. The photoresistor R4 and the fixed resistor R5 are connected in parallel with the adjustment resistor R2 and the current limiting resistor R3 and are connected to the negative input port of the judge. The output of the judge outputs the adaptive voltage to the display screen (1).
2. The electronic nameplate system according to claim 1, characterized in that, The protection circuit (32) consists of a power supply voltage, a fixed resistor R7, a Zener diode D1, a fixed resistor R9, and a PMOS transistor Q2. The power supply voltage is connected to the gate of the PMOS transistor Q2 through the fixed resistor R7, the Zener diode D1, and the fixed resistor R9 in sequence. The power supply voltage is connected to the source of the PMOS transistor Q2 through the capacitor C7. A fixed resistor R8 is connected between the Zener diode D1 and the fixed resistor R7. The fixed resistor R8 is connected to the base of the transistor Q1. The emitter of the transistor Q1 is connected in parallel with the fixed resistor R7. The collector of the transistor Q1 is connected between the fixed resistor R9 and the gate of the PMOS transistor Q2. A shunt resistor R6 is connected in parallel between the collector and emitter of the transistor Q1. The drain of the PMOS transistor Q2 outputs a protection voltage.
3. The electronic nameplate system according to claim 1, characterized in that, The transformer circuit (4) consists of an output voltage, a transformer processor, and a current-limiting resistor R1. The output voltage is connected to the Vin port of the transformer processor. The Vout port of the transformer processor outputs the power supply voltage to the outside through the current-limiting resistor R1. A capacitor C5 is connected in parallel between the Vin port and the GND terminal of the transformer processor, and a capacitor C6 is connected in parallel between the Vout port and the GND terminal of the transformer processor.
4. The electronic nameplate system according to claim 1, characterized in that, The power supply circuit (5) consists of an external power supply, a rectifier circuit and a power supply processor. The external power supply is connected to the Vin port and GND port of the power supply processor through the rectifier circuit. The Vout port of the power supply processor outputs the output voltage to the transformer circuit (4).
5. The electronic nameplate system according to claim 4, characterized in that, The power supply processor has filter capacitors C1 and C2 connected in parallel between its Vin port and GND port to improve response speed, and filter capacitors C3 and C4 connected in parallel between its Vout port and GND port.
6. The electronic nameplate system according to claim 1, characterized in that, The display screen (1) is model AS-OD753M4, the processing module (2) is model VK1S68C, the transformer processor is model AMS1117, and the power supply processor is model IM7805.