A kind of electric heater USB interface charge protection and wire-controlled apparatus
Technical field
The utility model relates to a kind of electric heater USB interface charge protection and wire-controlled apparatus.
Background technology
Electric heater is because having the features such as clean, easy to use; be subject to the favor of consumers in general gradually; but the USB interface current common electric heater not providing the charging inlet of subsidiary charge protection and be integrated as line traffic control interface; therefore common electric heater just can not be given and use external application equipment (as remote controller etc.) to need to provide convenience during charging the people of the other heating of electric heater; run into special circumstances to need cannot provide during line traffic control function simultaneously, use inconvenience.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of electric heater USB interface charge protection and wire-controlled apparatus, and the charging of this device is safe and reliable, also has line traffic control function simultaneously, can control electric heater at remote controller without when electricity by line traffic control.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
A kind of electric heater USB interface charge protection and wire-controlled apparatus, comprise USB interface charging protecting module and the large functional module of line traffic control module two, described USB interface charging protecting module comprises low pressure difference linearity voltage stabilizing chip and two diodes, and external power supply 5V and battery unsaturation voltage 3.7V inputs the voltage input end of low pressure difference linearity voltage stabilizing chip respectively through the second diode and the first diode; Connect the second electric capacity between the voltage input end of low pressure difference linearity voltage stabilizing chip and earth terminal, inside meet voltage 5V through the first capacity earth; The voltage output end output safety voltage 3V of low pressure difference linearity voltage stabilizing chip and and the 3rd electric capacity and the 4th Capacitance parallel connection between earth terminal;
Described line traffic control module comprises line traffic control signal level conversion chip, a diode and six resistance, electric heater line traffic control signal level is through the 4th pin of diode line control signal level conversion chip, external voltage 5V inputs the 4th pin of line traffic control signal level conversion chip through the 6th resistance and diode, and the 6th pin of line traffic control signal level conversion chip is entered through the 5th resistance, 5th pin of line traffic control signal level conversion chip, first pin, second pin and the 3rd pin are respectively through the 4th resistance, 3rd resistance, the output voltage 3V of the second resistance and the first resistor wiring control signal level conversion chip.
The beneficial effects of the utility model: compared with prior art; the utility model is by USB interface charging protecting module and line traffic control module two Implement of Function Module charge protection and line traffic control function greatly; charge protection is given when can ensure that electric heater charges to peripheral hardware (as remote controller etc.); ensure that charging is safe and reliable; line traffic control function can be realized at remote controller without during electricity simultaneously; electric heater is controlled by line traffic control, very easy to use, improve the functional level of electric heater further.
Accompanying drawing explanation
Fig. 1 is the circuit structure schematic diagram of USB interface charging protecting module of the present utility model;
Fig. 2 is the circuit structure schematic diagram of line traffic control module of the present utility model.
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment
Embodiment 1: as shown in Figure 1, USB interface charging protecting module comprises a low pressure difference linearity voltage stabilizing chip U1 and two diode D1, D2, external power supply 5V inputs the voltage input end Vin of low pressure difference linearity voltage stabilizing chip U1 through the second diode D2, and battery unsaturation voltage 3.7V inputs the voltage input end Vin of low pressure difference linearity voltage stabilizing chip U1 through the first diode D1; In succession between the voltage input end Vin of low pressure difference linearity voltage stabilizing chip U1 and earth terminal GND the second electric capacity C2, the voltage output end Vout of low pressure difference linearity voltage stabilizing chip U1 is in parallel with the 3rd electric capacity C3 between earth terminal GND and the 4th electric capacity C4, and the voltage output end of low pressure difference linearity voltage stabilizing chip U1 exports charging device safe voltage 3V; Inside meet voltage 5V through the first electric capacity C1 ground connection.As shown in Figure 2, line traffic control module comprises line traffic control signal level conversion chip Q1, a diode D3 and six resistance R1, R2, R3, R4, R5, R6, electric heater line traffic control signal level TX connects the 4th pin D4 of line traffic control signal level conversion chip Q1 through diode D3, external voltage 5V inputs the 4th pin D4 of line traffic control signal level conversion chip Q1 through the 6th resistance R6 and diode D3, external voltage 5V enters the 6th pin D5 of line traffic control signal level conversion chip Q1 through the 5th resistance R5, the 5th pin S1 of line traffic control signal level conversion chip Q1 is through the output voltage 3V of the 4th resistance R4 wiring control signal level conversion chip Q1, the first pin G1 of line traffic control signal level conversion chip Q1 is through the output voltage 3V of the 3rd resistance R3 wiring control signal level conversion chip Q1, the second pin S2 of line traffic control signal level conversion chip Q1 is through the output voltage 3V of the second resistance R2 wiring control signal level conversion chip, the 3rd pin G2 of line traffic control signal level conversion chip Q1 turns the output voltage 3V of chip through the first resistance R1 wiring control signal level.
Operation principle: USB interface charging protecting module is exactly that conversion exports peripheral hardware safe operating voltage by the voltage stabilizing process through low pressure difference linearity voltage stabilizing chip of external voltage and this two-way level signal of battery unsaturation voltage, ensures normally to work when being located at charging outward; Line traffic control functional module is exactly the line traffic control enabling signal TX that remote controller sends by receiving electric heater during data wire connection electric heater, and simultaneously by line traffic control enabling signal with enter line traffic control signal level conversion chip by the 5V voltage that data wire is external through the step-down process of diode D3, again through level conversion process, export TX1, namely remote control master control safe operating voltage 3V is exported, ensure that remote control master control can normally work, X-by-Wire is provided.
Using method: as shown in Figure 1, when remote control connects USB interface charging, external 5V power supply and battery unsaturation voltage 3.7V enter the Vin of low pressure difference linearity voltage stabilizing chip U1 respectively through D1, D2, then export the safe voltage 3V that can supply remote control master control work through the Vout of low pressure difference linearity voltage stabilizing chip U1; As shown in Figure 2, when enabling line traffic control function, line traffic control signal enters the 4th pin D4 of line traffic control signal level conversion chip Q1 through diode D3 and external 5V voltage enters the 6th pin D5 of line traffic control signal level conversion chip Q1 through the 5th resistance R5, export TX1 signal through the second pin S2 of line traffic control signal level conversion chip Q1, be remote control master control safe operating voltage 3V.
Execution mode of the present utility model is not limited to above-described embodiment, and the various changes made under the prerequisite not departing from the utility model aim all belong within protection range of the present utility model.