Set top box with complete machine power consumption detection and display functions

Abstract

The utility model relates to the technical field of set top boxes, in particular to a set top box with complete machine power consumption detection and display functions, which comprises a host shell, a display screen assembly and a power supply module, the display screen assembly is installed on the host shell, the current and voltage of the set top box are monitored through the specific power detection module board, detected data are transmitted to the main control circuit board, the main control circuit board calculates the power consumption of the set top box and then outputs the power consumption to the display screen assembly, and the power consumption of the set top box is displayed through the display screen assembly. According to the set top box, a user can visually obtain the power consumption data of the set top box, information is transmitted to the user through the display screen assembly, the actual use power consumption of the set top box can be visually displayed for the user, the display function of the display screen assembly can be fully utilized, two purposes are achieved, and the set top box is simple in structure, high in practicability and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of set-top boxes, in particular to a set-top box with whole-machine power consumption detection and display functions. Background Art

[0002] With the development of the times, set-top boxes have become popular in most households. Almost every family has one or several set-top boxes in the living room so that they can watch TV and online programs with their families. However, due to their diverse functions and types, the power consumption of different set-top boxes on the market varies greatly. It is difficult to obtain their accurate power consumption without testing.

[0003] In addition, most of the set-top boxes on the market now have a digital tube, but it is used to display the time or the status of the machine. However, usually during use, the function of the digital tube is relatively redundant, the credit value is not high, and it cannot display the power consumption of the set-top box. Utility Model Content

[0004] The utility model solves the defects and shortcomings of the prior art and provides a set-top box with a simple structure and the function of detecting and displaying the power consumption of the whole machine and capable of displaying the power consumption.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is a set-top box with whole-machine power consumption detection and display functions, including a host housing, a display screen assembly and a power supply module. A main control circuit board and a power detection module board for monitoring input current / power are installed in the host housing. The display screen assembly is installed on the host housing and is electrically connected to the main control circuit board. The power supply module is electrically connected to the main control circuit board. The power detection module board is communicatively connected to the main control circuit board via I2C.

[0006] Furthermore; the power detection module board includes a power detection chip, an ADC analog-to-digital converter, a multiplier, a single-pole double-throw switch, a current register, a voltage register, a power register, a double-pole four-throw switch, a first resistor and a first capacitor; the fourth pin of the power detection chip is electrically connected to the sixty-seventh pin of the main control circuit board, and the fifth pin of the power detection chip is electrically connected to the sixty-eighth pin of the main control circuit board; the multiplier multiplies the current value in the current register and the voltage value in the voltage register, and sends them to the power register for power conversion to obtain a power signal; the first end of the single-pole double-throw switch is electrically connected to the current register, the second end of the single-pole double-throw switch is electrically connected to the voltage register, and the third end of the single-pole double-throw switch is electrically connected to the current register. The first terminal of the double-pole four-throw switch is electrically connected to the first terminal of the ADC analog-to-digital converter, and the second terminal of the double-pole four-throw switch is electrically connected to the second terminal of the ADC analog-to-digital converter; one end of the first resistor is connected in series with a 12V power supply, and the other end is connected to the internal power supply voltage system of the set-top box; the fourth end of the double-pole four-throw switch is electrically connected to the input end of the first resistor; the third and sixth ends of the double-pole four-throw switch are electrically connected to the output end of the first resistor, and the fifth end of the double-pole four-throw switch is grounded; one end of the first capacitor is grounded, and the other end is electrically connected to the third pin of the power detection chip; the second pin of the power detection chip is connected in series with the first pin of the power detection chip, and the common end is grounded.

[0007] Furthermore, the power detection module board also includes a first pull-up resistor, a second pull-up resistor and a third pull-up resistor; one end of the first pull-up resistor is connected to the third pin of the power detection chip, and the other end is connected to the first capacitor; one end of the second pull-up resistor is connected to the fifth pin of the power detection chip, and the other end is connected to the common end of the first capacitor and the first pull-up resistor; one end of the third pull-up resistor is connected to the fourth pin of the power detection chip, and the other end is connected to the common end of the first capacitor and the first pull-up resistor.

[0008] Furthermore, the display screen assembly includes an LED lamp, an IR remote control receiving head and a digital tube, and the LED lamp, the IR remote control receiving head and the digital tube are all welded on the main control circuit board.

[0009] Furthermore, the model of the power detection chip is INA226.

[0010] Furthermore, the host housing is also provided with an audio output interface, a high-frequency signal input interface, a wired mesh interface and a wireless network interface connected to the main control circuit board.

[0011] Beneficial effects of the utility model:

[0012] The utility model provides a set-top box with the function of detecting and displaying the power consumption of the whole machine. A specific power detection module board is adopted to monitor the current and voltage of the set-top box and transmit the detected data to the main control circuit board. The main control circuit board calculates the power consumption and outputs it to the display screen component. The power consumption of the set-top box is displayed by using the display screen component, so that the user can intuitively obtain the power consumption data of the set-top box. The display screen component is used to convey information to the user, which can not only intuitively display the actual power consumption of the set-top box to the user, but also make full use of the display function of the display screen component, thus killing two birds with one stone. The application is not only simple in structure and strong in practicality, but also low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a module diagram of a set-top box with whole-machine power consumption detection and display functions according to the utility model;

[0014] Figure 2 This is a circuit diagram of a set-top box with whole-machine power consumption detection and display functions according to the utility model;

[0015] Figure 3 The utility model shows a display diagram of a digital tube in a set-top box with whole-machine power consumption detection and display functions. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0019] The utility model provides a set-top box with whole-machine power consumption detection and display functions.

[0020] In the embodiment of the present utility model, Figure 1-2 As shown, a set-top box with whole-machine power consumption detection and display functions includes a host housing, a display screen assembly and a power supply module. A main control circuit board and a power detection module board for monitoring input current / power are installed in the host housing. The display screen assembly is installed on the host housing and is electrically connected to the main control circuit board. The power supply module is electrically connected to the main control circuit board. The power detection module board is communicatively connected to the main control circuit board via I2C.

[0021] In this embodiment, the power detection module board includes a power detection chip, an ADC analog-to-digital converter, a multiplier, a single-pole double-throw switch, a current register, a voltage register, a power register, a double-pole four-throw switch, a first resistor and a first capacitor; the fourth pin of the power detection chip is electrically connected to the sixty-seventh pin of the main control circuit board, and the fifth pin of the power detection chip is electrically connected to the sixty-eighth pin of the main control circuit board; the multiplier multiplies the current value in the current register and the voltage value in the voltage register, and sends them to the power register for power conversion to obtain a power signal; the first end of the single-pole double-throw switch is electrically connected to the current register, the second end of the single-pole double-throw switch is electrically connected to the voltage register, and the third end of the single-pole double-throw switch is electrically connected to the current register. The end is electrically connected to the third end of the ADC analog-to-digital converter; the first end of the double-pole four-throw switch is electrically connected to the first end of the ADC analog-to-digital converter, and the second end of the double-pole four-throw switch is electrically connected to the second end of the ADC analog-to-digital converter; one end of the first resistor is connected in series with a 12V power supply, and the other end is connected to the internal power supply voltage system of the set-top box; the fourth end of the double-pole four-throw switch is electrically connected to the input end of the first resistor; the third and sixth ends of the double-pole four-throw switch are electrically connected to the output end of the first resistor, and the fifth end of the double-pole four-throw switch is grounded; one end of the first capacitor is grounded, and the other end is electrically connected to the third pin of the power detection chip; the second pin of the power detection chip is connected in series with the first pin of the power detection chip, and the common end is grounded.

[0022] In this embodiment, the power detection module board also includes a first pull-up resistor, a second pull-up resistor and a third pull-up resistor; one end of the first pull-up resistor is connected to the third pin of the power detection chip, and the other end is connected to the first capacitor; one end of the second pull-up resistor is connected to the fifth pin of the power detection chip, and the other end is connected to the common end of the first capacitor and the first pull-up resistor; one end of the third pull-up resistor is connected to the fourth pin of the power detection chip, and the other end is connected to the common end of the first capacitor and the first pull-up resistor.

[0023] In this embodiment, the display screen assembly includes an LED lamp, an IR remote control receiving head and a digital tube, and the LED lamp, the IR remote control receiving head and the digital tube are all welded on the main control circuit board.

[0024] In this embodiment, the model of the power detection chip is INA226.

[0025] In this embodiment, the host housing is also provided with an audio output interface, a high-frequency signal input interface, a wired mesh interface and a wireless network interface connected to the main control circuit board.

[0026] Specifically, the power detection chip used in this application is INA226, which is responsible for monitoring the input current / power of the set-top box and outputting it to the main control circuit board. When the high-frequency signal input interface receives the external TV signal, it is tuned to separate the data of the required frequency point, and then demodulated by the demodulator to obtain the corresponding TS stream, and then the main control circuit board demultiplexes the TV information table and the audio and video signal stream of the program, and finally sends the obtained audio and video to the decoder for decoding and transmits it to the TV through the audio output interface for playback. The display screen component is composed of an LED lamp, an IR remote control receiving head and a digital tube. The LED lamp displays the current state of the set-top box (whether it is a normal working state or a standby state), the IR remote control receiving head is mainly used to receive infrared signals from the remote control, and the digital tube is used to display the current state of the set-top box, and the software of the main control circuit board controls its display.

[0027] This application adds a power detection chip, which is powered by the inside of the set-top box. The power detection chip has two voltage detection pins, pin9 and pin10, and a bus voltage input pin, pin8, and communicates with the main control circuit board through I2C (pin4 and pin5). A0 and A1 are address pins so that the main control can accurately find the detection module.

[0028] The working principle of the power detection chip is as follows:

[0029] When the set-top box is working, the input power first passes through the resistor R SHUNT Then it supplies power to the back-end set-top box, so through the resistor R SHUNT The current is the total current of the set-top box. At this time, the power detection chip is powered by the internal power supply of the set-top box. By detecting and recording the resistance R SHUNT The potential at both ends is then calculated inside the power detection chip to obtain the resistance R SHUNTAt the same time, pin8 detects and records the voltage at the rear end of resistor R1, which is the actual voltage input to the set-top box. At this point, the parameters required for the power consumption of the computer top box have been obtained, and the power consumption of the set-top box can be obtained by further calculation. In addition, when the set-top box is in standby mode, since the input power supply of the power detection chip can be cut off, no additional power loss will be caused.

[0030] The power detection chip communicates with the main control circuit board via I2C, a protocol that is widely used and mature in technology. Therefore, there is no need to worry about the accuracy of data transmission, and the technical difficulty of implementation is very low. When the main control circuit board gives a signal to the power detection chip, the power detection chip transmits the obtained power consumption value to the main control, which is then handed over to the main control circuit board for subsequent processing.

[0031] Among them, Figure 3 As shown, the display module of the digital tube of the set-top box is composed of four seven-segment light-emitting diodes with the shape of "8" and DP1 and DP2. By using DIG2 of the digital tube as the unit digit value of the power display, a display module with a range of 0.01 to 99.99 can be obtained. The digital tube display fully meets the power requirements of a normal set-top box. The main control circuit board processes the obtained power consumption value into a value with two decimal places, and then transmits the value to the digital tube control chip through the I2C bus (the communication between the digital tube control chip and the main control is also the I2C communication protocol). The digital tube control chip converts the obtained value into the LED display of the digital tube, thereby completing the power consumption display function of the set-top box.

[0032] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A set-top box with whole-machine power consumption detection and display function, characterized in that: It includes a host housing, a display screen assembly and a power supply module. A main control circuit board and a power detection module board for monitoring input current / power are installed in the host housing. The display screen assembly is installed on the host housing and is electrically connected to the main control circuit board. The power supply module is electrically connected to the main control circuit board. The power detection module board is connected to the main control circuit board through I2C communication. The power detection module board includes a power detection chip, an ADC analog-to-digital converter, a multiplier, a single-pole double-throw switch, a current register, a voltage register, a power register, a double-pole four-throw switch, a first resistor and a first capacitor; the fourth pin of the power detection chip is electrically connected to the sixty-seventh pin of the main control circuit board, and the fifth pin of the power detection chip is electrically connected to the sixty-eighth pin of the main control circuit board; the multiplier multiplies the current value in the current register and the voltage value in the voltage register, and sends them to the power register for power conversion to obtain a power signal; the first end of the single-pole double-throw switch is electrically connected to the current register, the second end of the single-pole double-throw switch is electrically connected to the voltage register, and the third end of the single-pole double-throw switch is electrically connected to the The third end of the ADC analog-to-digital converter is electrically connected; the first end of the double-pole four-throw switch is electrically connected to the first end of the ADC analog-to-digital converter, and the second end of the double-pole four-throw switch is electrically connected to the second end of the ADC analog-to-digital converter; one end of the first resistor is connected in series with a 12V power supply, and the other end is connected to the internal power supply voltage system of the set-top box; the fourth end of the double-pole four-throw switch is electrically connected to the input end of the first resistor; the third end and the sixth end of the double-pole four-throw switch are electrically connected to the output end of the first resistor, and the fifth end of the double-pole four-throw switch is grounded; one end of the first capacitor is grounded, and the other end is electrically connected to the third pin of the power detection chip; the second pin of the power detection chip is connected in series with the first pin of the power detection chip, and the common end is grounded; The power detection module board also includes a first pull-up resistor, a second pull-up resistor and a third pull-up resistor; one end of the first pull-up resistor is connected to the third pin of the power detection chip, and the other end is connected to the first capacitor; one end of the second pull-up resistor is connected to the fifth pin of the power detection chip, and the other end is connected to the common end of the first capacitor and the first pull-up resistor; one end of the third pull-up resistor is connected to the fourth pin of the power detection chip, and the other end is connected to the common end of the first capacitor and the first pull-up resistor.

2. The set-top box with whole-machine power consumption detection and display function as claimed in claim 1, characterized in that: The display screen assembly comprises an LED lamp, an IR remote control receiving head and a digital tube, and the LED lamp, the IR remote control receiving head and the digital tube are all welded on the main control circuit board.

3. The set-top box with whole-machine power consumption detection and display function as claimed in claim 1, characterized in that: The model of the power detection chip is INA226.

4. The set-top box with whole-machine power consumption detection and display function as claimed in claim 1, characterized in that: The host housing is also provided with an audio output interface, a high-frequency signal input interface, a wired mesh interface and a wireless network interface connected to the main control circuit board.

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