阅读说明：本技术 箭速测量仪 (Arrow speed measuring instrument ) 是由 张宏艳 杨子建 单成全 于 2020-07-08 设计创作，主要内容包括：本发明公开了一种箭速测量仪,涉及箭速测量技术领域。本发明包括发射端电路和接收端电路,其中发射端电路安装在弓背中,所述接收端电路安装在箭靶中。发射端电路包括发射端控制器,所述控制器连接有无线射频电路Ⅰ、EEPROM电路Ⅰ、电池电压测量电路Ⅰ、锂电池充电电路Ⅰ、充电接口电路Ⅰ以及触发开关；接收端电路包括接收端控制器,所述接收端控制器连接有无线射频电路Ⅱ、EEPROM电路Ⅱ、电池电压测量电路Ⅱ、锂电池充电电路Ⅱ、充电接口电路Ⅱ以及加速度传感器。该箭速测量装置为非接触式测量装置,具有实时、安全、便捷的优点,适用于各种种类弓箭的箭速测量,节省人力,对于练习者尤其是初学者,进行弓的参数调整具有非常高效的指导作用。(The invention discloses an arrow speed measuring instrument, and relates to the technical field of arrow speed measurement. The present invention includes a transmitting-end circuit installed in a bow back and a receiving-end circuit installed in an arrow target. The transmitting end circuit comprises a transmitting end controller, and the controller is connected with a wireless radio frequency circuit I, an EEPROM circuit I, a battery voltage measuring circuit I, a lithium battery charging circuit I, a charging interface circuit I and a trigger switch; the receiving end circuit comprises a receiving end controller, and the receiving end controller is connected with a wireless radio frequency circuit II, an EEPROM circuit II, a battery voltage measuring circuit II, a lithium battery charging circuit II, a charging interface circuit II and an acceleration sensor. The arrow speed measuring device is a non-contact measuring device, has the advantages of real time, safety and convenience, is suitable for measuring the arrow speed of various arches, saves manpower, and has very efficient guiding effect on parameter adjustment of arches by exercisers, particularly beginners.)

1. An arrow speed measurement appearance, includes transmitting end circuit and receiving end circuit, its characterized in that:

the transmitting end circuit comprises a transmitting end controller, and the controller is connected with a wireless radio frequency circuit I, an EEPROM circuit I, a battery voltage measuring circuit I, a lithium battery charging circuit I, a charging interface circuit I and a trigger switch;

the receiving end circuit comprises a receiving end controller, and the receiving end controller is connected with a wireless radio frequency circuit II, an EEPROM circuit II, a battery voltage measuring circuit II, a lithium battery charging circuit II, a charging interface circuit II and an acceleration sensor.

2. The arrow speed measuring instrument according to claim 1, wherein: the transmitting end controller adopts an STM32F051 singlechip; the wireless radio frequency circuit I adopts an NRF24L012 chip, and the EEPROM circuit I adopts an AT24C02C chip; wherein, the 16 pins, the 15 pins, the 26 pins, the 27 pins, the 28 pins and the 32 pins of the STM32F051 singlechip are correspondingly connected with the 1 pin, the 2 pins, the 3 pins, the 4 pins, the 5 pins and the 6 pins of the NRF24L012 chip; the 7 pin of the NRF24L012 chip is connected with a power supply, the 8 pin, the 14 pin, the 16 pin and the 20 pin of the NRF24L012 chip are respectively connected with one end of a crystal oscillator X1, one end of a capacitor C1 and one end of a resistor R1, the 10 pin of the NRF24L012 chip is respectively connected with the other end of a crystal oscillator X1, the other end of a resistor R1 and one end of a capacitor C2, the other end of the capacitor C1 and the other end of a capacitor C2 are respectively connected with the ground, the 11 pin of the NRF24L012 chip is respectively connected with one end of a capacitor C3, one end of a capacitor C4 and one end of an inductor L2, the other end of a capacitor C3 and the other end of a capacitor C4 are connected with the ground, the other end of the inductor L2 is connected with one end of an inductor L84 and the 12 pin of the NRF24L012 chip, the other end of the inductor L1 is connected with the 13 pin of the NRF24L 3, the other end of the inductor L3 is connected with the other end of the capacitor C5, the capacitor C585 pin of the capacitor C585, the 2-pin of the wireless connector is grounded, the 15 pin of the NRF24L012 chip is respectively connected with the 18 pin, one end of a capacitor C8, one end of a capacitor C9 and a power supply, the other end of the capacitor C8 and the other end of the capacitor C9 are grounded, the 19 pin of the NRF24L012 chip is grounded through a capacitor C7, and the 16 pin of the NRF24L012 chip is grounded through a resistor R2; pins 1-4 of the AT24C02C chip are grounded, pins 5 and 6 of the AT24C02C chip are correspondingly connected with pins 30 and 29 of the STM32F051 singlechip, and a capacitor C30 is connected between pins 7 and 8 of the AT24C02C chip;

the battery voltage measuring circuit I comprises a resistor R3, one end of a resistor R3 is connected with one end of a resistor R4, one end of a capacitor C27 and a pin 9 of an STM32F051 singlechip, the other end of the capacitor C27 and the other end of a resistor R4 are grounded, and VBAT is led out from the other end of a resistor R3;

the lithium battery charging circuit I adopts a TP4056 chip, a pin 1 and a pin 3 of the TP4056 chip are grounded, a pin 2 is grounded through a resistor R16, one ends of a pin 4 and a pin 8 are connected with BUS voltage through a resistor R6, a pin 7 is connected with one end of a resistor R10 through a diode D2, the other end of the resistor R10 is connected with one end of a capacitor C28 and the pin 4 of the TP4056 chip, the other end of the capacitor C28 is grounded, a pin 6 of the TP4056 chip is suspended, a pin 5 is grounded through a C34, and VBAT is led out from a connection point of the capacitor C34;

charging interface circuit I adopts USB Type-C, and USB Type-C's B12 and A12 pin ground connection, and B9 and A9 connect BUS voltage, and A5 passes through resistance R17 ground connection, and B5 passes through resistance R18 ground connection.

3. The arrow speed meter according to claim 2, wherein: the receiving end controller, the wireless radio frequency circuit II, the EEPROM circuit II, the battery voltage measuring circuit II, the lithium battery charging circuit II and the charging interface circuit II are connected in the same way with the same part of the transmitting end circuit; the acceleration sensor adopts MXC6225XU chip, MXC6225XU chip 1 foot connects the 32 feet of STM32F051 singlechip and breaks the pin, 2 feet are empty, 3 feet one end connects 3.3V power, simultaneously through electric capacity C29 ground connection, 4 feet connect 3.3V power through R11, output signal SCL corresponds the 29 feet of connecting STM32F051 singlechip simultaneously, 5 feet connect 3.3V power through R12, output signal SDA corresponds the 30 feet of connecting STM32F051 singlechip simultaneously, 6 feet ground connection.

4. The arrow speed measuring instrument according to any one of claims 1 to 3, wherein: the transmitting end circuit is installed in the bow back, and the receiving end circuit is installed in the arrow target.

Technical Field

The invention relates to the technical field of arrow speed measurement, in particular to an arrow speed measuring instrument.

Background

When the bow is debugged, many parameters of the bow need to be adjusted, wherein the more important parameters comprise a bow gear, the length of a bow string and the like. The difference in bow parameters affects the speed of the arrow. Determining the velocity of the arrow is therefore of great importance for the setting of the parameters of the bow. However, for many archery exercisers, especially beginners, the speed of the arrow cannot be accurately identified by naked eyes, which brings certain difficulty to parameter adjustment.

Disclosure of Invention

In order to solve the problems, the invention provides an arrow speed measuring instrument which can calculate the average speed of shooting by an archery practicer.

The invention is realized by the following technical proposal that the arrow speed measuring instrument comprises a transmitting end circuit and a receiving end circuit,

the transmitting end circuit comprises a transmitting end controller, and the controller is connected with a wireless radio frequency circuit I, an EEPROM circuit I, a battery voltage measuring circuit I, a lithium battery charging circuit I, a charging interface circuit I and a trigger switch;

the receiving end circuit comprises a receiving end controller, and the receiving end controller is connected with a wireless radio frequency circuit II, an EEPROM circuit II, a battery voltage measuring circuit II, a lithium battery charging circuit II, a charging interface circuit II and an acceleration sensor.

Preferably, the transmitting end controller adopts an STM32F051 singlechip; the wireless radio frequency circuit I adopts an NRF24L012 chip, and the EEPROM circuit I adopts an AT24C02C chip; wherein, the 16 pins, the 15 pins, the 26 pins, the 27 pins, the 28 pins and the 32 pins of the STM32F051 singlechip are correspondingly connected with the 1 pin, the 2 pins, the 3 pins, the 4 pins, the 5 pins and the 6 pins of the NRF24L012 chip; the 7 pin of the NRF24L012 chip is connected with a power supply, the 8 pin, the 14 pin, the 16 pin and the 20 pin of the NRF24L012 chip are respectively connected with one end of a crystal oscillator X1, one end of a capacitor C1 and one end of a resistor R1, the 10 pin of the NRF24L012 chip is respectively connected with the other end of a crystal oscillator X1, the other end of a resistor R1 and one end of a capacitor C2, the other end of the capacitor C1 and the other end of a capacitor C2 are respectively connected with the ground, the 11 pin of the NRF24L012 chip is respectively connected with one end of a capacitor C3, one end of a capacitor C4 and one end of an inductor L2, the other end of a capacitor C3 and the other end of a capacitor C4 are connected with the ground, the other end of the inductor L2 is connected with one end of an inductor L84 and the 12 pin of the NRF24L012 chip, the other end of the inductor L1 is connected with the 13 pin of the NRF24L 3, the other end of the inductor L3 is connected with the other end of the capacitor C5, the capacitor C585 pin of the capacitor C585, the 2-pin of the wireless connector is grounded, the 15 pin of the NRF24L012 chip is respectively connected with the 18 pin, one end of a capacitor C8, one end of a capacitor C9 and a power supply, the other end of the capacitor C8 and the other end of the capacitor C9 are grounded, the 19 pin of the NRF24L012 chip is grounded through a capacitor C7, and the 16 pin of the NRF24L012 chip is grounded through a resistor R2; pins 1-4 of the AT24C02C chip are grounded, pins 5 and 6 of the AT24C02C chip are correspondingly connected with pins 30 and 29 of the STM32F051 singlechip, and a capacitor C30 is connected between pins 7 and 8 of the AT24C02C chip;

the battery voltage measuring circuit I comprises a resistor R3, one end of a resistor R3 is connected with one end of a resistor R4, one end of a capacitor C27 and a pin 9 of an STM32F051 singlechip, the other end of the capacitor C27 and the other end of a resistor R4 are grounded, and VBAT is led out from the other end of a resistor R3;

the lithium battery charging circuit I adopts a TP4056 chip, a pin 1 and a pin 3 of the TP4056 chip are grounded, a pin 2 is grounded through a resistor R16, one ends of a pin 4 and a pin 8 are connected with BUS voltage through a resistor R6, a pin 7 is connected with one end of a resistor R10 through a diode D2, the other end of the resistor R10 is connected with one end of a capacitor C28 and the pin 4 of the TP4056 chip, the other end of the capacitor C28 is grounded, a pin 6 of the TP4056 chip is suspended, a pin 5 is grounded through a C34, and VBAT is led out from a connection point of the capacitor C34;

charging interface circuit I adopts USB Type-C, and USB Type-C's B12 and A12 pin ground connection, and B9 and A9 connect BUS voltage, and A5 passes through resistance R17 ground connection, and B5 passes through resistance R18 ground connection.

Preferably, the receiving end controller, the wireless radio frequency circuit II, the EEPROM circuit II, the battery voltage measuring circuit II, the lithium battery charging circuit II and the charging interface circuit II are connected in the same way with the same part of the transmitting end circuit; the acceleration sensor adopts an MXC6225XU chip, a pin 1 of the MXC6225XU chip is connected with a pin 32 interrupt pin of an STM32F051 singlechip, a pin 2 is empty, one end of a pin 3 is connected with a 3.3V power supply, and the pin 3 is grounded through a capacitor C29. The 4 feet connect the 3.3V power through R11, and output signal SCL corresponds the 29 feet of connecting STM32F051 singlechip simultaneously, and 5 feet connect the 3.3V power through R12, and output signal SDA corresponds the 30 feet of connecting STM32F051 singlechip simultaneously, and 6 feet ground connection.

Preferably, the transmitting end circuit is installed in the bow back, and the receiving end circuit is installed in the arrow target.

The invention has the beneficial effects that: this arrow speed measuring device is non-contact measuring device, has real-time, safe, convenient advantage, under the condition of high strength match and training, does not have reputation interference, does benefit to the training, and simple structure is applicable to the arrow speed of various types of arrow and measures simultaneously, uses manpower sparingly, to practitioner especially beginner, carries out the parameter adjustment of bow and has very efficient guide effect.

Drawings

FIG. 1 is a functional block diagram of the present invention;

FIG. 2 is a diagram of a transmit side circuit of the present invention;

fig. 3 is a circuit diagram of a receiving end of the present invention.

Detailed Description

As shown in fig. 1, an arrow speed measuring instrument includes a transmitting-end circuit installed in a bow back and a receiving-end circuit installed in an arrow target.

The transmitting end circuit comprises a transmitting end controller, and the controller is connected with a wireless radio frequency circuit I, an EEPROM circuit I, a battery voltage measuring circuit I, a lithium battery charging circuit I, a charging interface circuit I and a trigger switch;

the receiving end circuit comprises a receiving end controller, and the receiving end controller is connected with a wireless radio frequency circuit II, an EEPROM circuit II, a battery voltage measuring circuit II, a lithium battery charging circuit II, a charging interface circuit II and an acceleration sensor.

As shown in fig. 2, the transmitting end controller adopts an STM32F051 single chip microcomputer; the wireless radio frequency circuit I adopts an NRF24L012 chip, and the EEPROM circuit I adopts an AT24C02C chip; wherein, the 16 pins, the 15 pins, the 26 pins, the 27 pins, the 28 pins and the 32 pins of the STM32F051 singlechip are correspondingly connected with the 1 pin, the 2 pins, the 3 pins, the 4 pins, the 5 pins and the 6 pins of the NRF24L012 chip; the 7 pin of the NRF24L012 chip is connected with a power supply, the 8 pin, the 14 pin, the 16 pin and the 20 pin of the NRF24L012 chip are respectively connected with one end of a crystal oscillator X1, one end of a capacitor C1 and one end of a resistor R1, the 10 pin of the NRF24L012 chip is respectively connected with the other end of a crystal oscillator X1, the other end of a resistor R1 and one end of a capacitor C2, the other end of the capacitor C1 and the other end of a capacitor C2 are respectively connected with the ground, the 11 pin of the NRF24L012 chip is respectively connected with one end of a capacitor C3, one end of a capacitor C4 and one end of an inductor L2, the other end of a capacitor C3 and the other end of a capacitor C4 are connected with the ground, the other end of the inductor L2 is connected with one end of an inductor L84 and the 12 pin of the NRF24L012 chip, the other end of the inductor L1 is connected with the 13 pin of the NRF24L 3, the other end of the inductor L3 is connected with the other end of the capacitor C5, the capacitor C585 pin of the capacitor C585, the 2-pin of the wireless connector is grounded, the 15 pin of the NRF24L012 chip is respectively connected with the 18 pin, one end of a capacitor C8, one end of a capacitor C9 and a power supply, the other end of the capacitor C8 and the other end of the capacitor C9 are grounded, the 19 pin of the NRF24L012 chip is grounded through a capacitor C7, and the 16 pin of the NRF24L012 chip is grounded through a resistor R2; pins 1-4 of the AT24C02C chip are grounded, pins 5 and 6 of the AT24C02C chip are correspondingly connected with pins 30 and 29 of the STM32F051 singlechip, and a capacitor C30 is connected between pins 7 and 8 of the AT24C02C chip;

the battery voltage measuring circuit I comprises a resistor R3, one end of a resistor R3 is connected with one end of a resistor R4, one end of a capacitor C27 and a pin 9 of an STM32F051 singlechip, the other end of the capacitor C27 and the other end of a resistor R4 are grounded, and VBAT is led out from the other end of a resistor R3;

the lithium battery charging circuit I adopts a TP4056 chip, a pin 1 and a pin 3 of the TP4056 chip are grounded, a pin 2 is grounded through a resistor R16, one ends of a pin 4 and a pin 8 are connected with BUS voltage through a resistor R6, a pin 7 is connected with one end of a resistor R10 through a diode D2, the other end of the resistor R10 is connected with one end of a capacitor C28 and the pin 4 of the TP4056 chip, the other end of the capacitor C28 is grounded, a pin 6 of the TP4056 chip is suspended, a pin 5 is grounded through a C34, and VBAT is led out from a connection point of the capacitor C34;

charging interface circuit I adopts USB Type-C, and USB Type-C's B12 and A12 pin ground connection, and B9 and A9 connect BUS voltage, and A5 passes through resistance R17 ground connection, and B5 passes through resistance R18 ground connection.

As shown in fig. 3, the same connection mode is adopted for the same parts of the receiving end controller, the wireless radio frequency circuit ii, the EEPROM circuit ii, the battery voltage measuring circuit ii, the lithium battery charging circuit ii and the charging interface circuit ii as the transmitting end circuit; the acceleration sensor adopts an MXC6225XU chip, a pin 1 of the MXC6225XU chip is connected with a pin 32 interrupt pin of an STM32F051 singlechip, a pin 2 is empty, one end of a pin 3 is connected with a 3.3V power supply, and the pin 3 is grounded through a capacitor C29. The 4 feet connect the 3.3V power through R11, and output signal SCL corresponds the 29 feet of connecting STM32F051 singlechip simultaneously, and 5 feet connect the 3.3V power through R12, and output signal SDA corresponds the 30 feet of connecting STM32F051 singlechip simultaneously, and 6 feet ground connection.

The working principle is as follows: the arrow target is provided with an acceleration sensor, an arrow rod triggers a switch to act when the arrow is shot, if the arrow target is shot, the acceleration sensor detects and outputs a voltage signal, the voltage signal is transmitted to a control circuit of a receiving end controller, a signal is sent to a transmitting end controller of a transmitting end through a wireless signal transmitter, the transmitting end controller receives the signal from the arrow target, an instruction is sent to stop a timer of the transmitting end controller to time, the timing time of the timer is read, and the program calculates the average speed shot by a shooter according to the shooting distance and the time.

The circuit power supply adopts the lithium cell power supply, is charged for the lithium cell through TP4056 by the charging circuit who is the main module by the 5V charger, and voltage measurement circuit measures the voltage simultaneously, changes into BUS voltage through TYPE-C interface, converts into 3.3V voltage through BL8064 and gives the power supply of single chip microcomputer system.