阅读说明：本技术 定向无线最优频率能量传输的参数检测装置 (Parameter detection device for directional wireless optimal frequency energy transmission ) 是由 柯智强 焦海 柯奕 喻金钱 张继红 王成英 于 2021-07-16 设计创作，主要内容包括：本发明属于无线能量传输领域,特别涉及定向无线最优频率能量传输的参数检测装置。本发明的晶振模块U2与频率产生芯片U1芯片连接,频率产生芯片U1的控制引脚与控制模块连接,通过控制模块输出控制指令使频率产生芯片U1的输出端OUT输出不同的频率,频率产生芯片U1的输出端OUT与脉宽调节电路输入连接,定时器U3的第6和7脚接入电阻R和电容C5,2脚与频率产生芯片U1的输出端OUT连接,3脚作为频率信号输出脚,5脚通过串联滑动电阻R1与电源连接,电流检测电路与控制模块连接,控制模块控制频率产生芯片U1的频率变化,控制模块控制通过电流检测电路检测不同频率下定向无线频率能量传输装置的工作电流,确定电流最大时所对应的频率为最优频率。(The invention belongs to the field of wireless energy transmission, and particularly relates to a parameter detection device for directional wireless optimal frequency energy transmission. The crystal oscillator module U2 of the invention is connected with the frequency generating chip U1 chip, the control pin of the frequency generating chip U1 is connected with the control module, the control module outputs a control command to enable the output end OUT of the frequency generation chip U1 to output different frequencies, the output end OUT of the frequency generation chip U1 is connected with the input of the pulse width adjusting circuit, pins 6 and 7 of the timer U3 are connected with the resistor R and the capacitor C5, pin 2 is connected with the output end OUT of the frequency generation chip U1, pin 3 is used as a frequency signal output pin, pin 5 is connected with a power supply through the series sliding resistor R1, the current detection circuit is connected with the control module, the control module controls the frequency change of the frequency generation chip U1, the control module controls the current detection circuit to detect the working current of the directional wireless frequency energy transmission device under different frequencies, and the frequency corresponding to the maximum current is determined to be the optimal frequency.)

1. The parameter detection device for the directional wireless optimal frequency energy transmission comprises a frequency generation chip U1, a crystal oscillator module U2, a timer U3, a control module and a current detection circuit, and is characterized in that: the crystal oscillator module U2 is connected with the frequency generating chip U1, the control pin of the frequency generating chip U1 is connected with the control module, the control module outputs a control command to enable the output end OUT of the frequency generating chip U1 to output different frequencies, the output end OUT of the frequency generating chip U1 is connected with the input of a pulse width adjusting circuit, the pulse width adjusting circuit comprises a timer U3, a resistor R, a sliding resistor R1 and a capacitor C5, pins 6 and 7 of the timer U3 are connected into the resistor R and the capacitor C5, pin 2 is connected with the output end OUT of the frequency generating chip U1, pin 3 is used as a frequency signal output pin, pin 5 is connected with a power supply through a series sliding resistor R1, a current detecting circuit is connected with the control module, the control module controls the frequency change of the frequency generating chip U1, the control module controls the current detecting circuit to detect the working current of the directional wireless frequency energy transmission device under different frequencies, and determining the frequency corresponding to the maximum current as the optimal frequency.

2. The apparatus of claim 1, wherein the apparatus further comprises: the frequency generation chip U1 is an AD9833 chip.

3. The apparatus of claim 1, wherein the apparatus further comprises: the timer U3 may be a 555 timer.

4. The apparatus of claim 1, wherein the apparatus further comprises: the control module adopts DSP, singlechip or ARM as control chip.

5. The apparatus of claim 1, wherein the apparatus further comprises: the current detection circuit utilizes the collector for amplification.

Technical Field

The invention belongs to the field of wireless energy transmission, and particularly relates to a parameter detection device for directional wireless optimal frequency energy transmission.

Background

The existing wireless charging technology requires a charging distance of 0-10 mm, or requires strict matching of transmitting and receiving coils, so that the cost and the universality are very poor, the price is high, and the use of the technology is severely limited.

In reality, when manufacturing, the coil and the capacitor are different, so the optimal operating frequency of the wireless energy transfer device is different, and how to measure the change of the optimal frequency under different pulse widths is a technical problem to be solved in the field.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a parameter detection device for directional wireless optimal frequency energy transmission. The invention realizes that different frequencies can be output and the working loop current detection can be carried out through devices such as a frequency generation chip, a timer and the like, and the optimal frequency is issued by finding the maximum working current.

The parameter detection device for the directional wireless optimal frequency energy transmission comprises a frequency generation chip U1, a crystal oscillator module U2, a timer U3, a control module and a current detection circuit, and is characterized in that: the crystal oscillator module U2 is connected with the frequency generating chip U1, the control pin of the frequency generating chip U1 is connected with the control module, the control module outputs a control command to enable the output end OUT of the frequency generating chip U1 to output different frequencies, the output end OUT of the frequency generating chip U1 is connected with the input of a pulse width adjusting circuit, the pulse width adjusting circuit comprises a timer U3, a resistor R, a sliding resistor R1 and a capacitor C5, pins 6 and 7 of the timer U3 are connected into the resistor R and the capacitor C5, pin 2 is connected with the output end OUT of the frequency generating chip U1, pin 3 is used as a frequency signal output pin, pin 5 is connected with a power supply through a series sliding resistor R1, a current detecting circuit is connected with the control module, the control module controls the frequency change of the frequency generating chip U1, the control module controls the current detecting circuit to detect the working current of the directional wireless frequency energy transmission device under different frequencies, and determining the frequency corresponding to the maximum current as the optimal frequency.

The parameter detection device for the directional wireless optimal frequency energy transmission is characterized in that: the frequency generation chip U1 is an AD9833 chip.

The parameter detection device for the directional wireless optimal frequency energy transmission is characterized in that: the timer U3 may be a 555 timer,

the parameter detection device for the directional wireless optimal frequency energy transmission is characterized in that: the control module adopts DSP, singlechip or ARM as control chip.

The parameter detection device for the directional wireless optimal frequency energy transmission is characterized in that: the current detection circuit utilizes the collector for amplification.

The invention has the beneficial effects that: one is that the optimum operating frequency can be detected at different pulse widths. Secondly, the circuit structure is simple, and the debugging is convenient. Thirdly, the pulse width can be adjusted through the sliding resistor, and the operation is convenient.

Drawings

FIG. 1 is a schematic circuit diagram of a frequency generation unit according to the present invention.

Fig. 2 is a circuit diagram of a pulse width adjusting circuit.

Fig. 3 is a schematic view of current collection.

Fig. 4 is a schematic diagram of a current detection circuit.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

As shown in fig. 1 to 3, the parameter detection apparatus for directional wireless optimal frequency energy transmission of the present invention includes a frequency generation chip U1, a crystal oscillator module U2, a timer U3, a control module and a current detection circuit, wherein the crystal oscillator module U2 is connected to the frequency generation chip U1 by a chip to provide a stable frequency source for the frequency generation chip U1, a control pin of the frequency generation chip U1 is connected to the control module, a control command is output by the control module to enable an output terminal OUT of the frequency generation chip U1 to output different frequencies, and an output terminal OUT of the frequency generation chip U1 is connected to an input of a pulse width adjustment circuit. The capacitances C1, C2, C3, C4 in fig. 1 may be chosen to be a capacitance of 0.1 uF. The frequency generation chip U1 of the present invention may be an AD9833 chip.

As shown in fig. 2, the pulse width adjusting circuit of the present invention includes a timer U3, a resistor R, a sliding resistor R1, and a capacitor C5, wherein pins 6 and 7 of the timer U3 are connected to the resistor R and the capacitor C5, pin 2 is used as a start, pin 3 is used as a frequency signal output pin, pin 5 is applied with a voltage V1, pin 5 is connected to a power supply through a series sliding resistor R1, and the values of the voltage V1 and the VCC voltage determine the pulse width of the output signal f 1. The timer U3 can be a 555 timer, and the capacitor C5 is a 0.1uF capacitor

As shown in fig. 3 and 4, the present invention further includes a current detection circuit, and the current detection circuit is connected to the control module. The current sensing circuit is shown in fig. 4. The control module of the invention can adopt control chips such as DSP, singlechip or ARM and the like. As shown in fig. 4, the current detection circuit of the present invention utilizes the collector for amplification, which can use a relatively small resistor to detect the current I with a small consumption of voltage, and can adjust the detection sensitivity by adjusting the base resistance of the transistor.

The working process of the parameter detection device for the directional wireless optimal frequency energy transmission comprises the following steps: the input current I of the current detection circuit is connected with the directional wireless frequency energy transmission device, so that the control module can detect the working current of the directional wireless frequency energy transmission device through the current detection circuit, the invention makes the frequency generating chip U1 generate different frequencies through the control instruction output by the control module, the pulse width of the output frequency can be properly adjusted through the pulse width adjusting circuit, when the directional wireless frequency energy transmission device works, the control module controls the frequency of the frequency generation chip U1 to change, for example, from 600KHZ to 1000KHZ, and the current detection circuit detects the working current of the directional wireless frequency energy transmission device under different frequencies, and determines the frequency corresponding to the maximum current as the optimal frequency. The invention can also adjust the output pulse width through the pulse width adjusting circuit, thereby obtaining the optimal output frequency under different pulse widths and providing a basis for the measurement, design or processing of the directional wireless frequency energy transmission device.