Water rocket altimeter

Abstract

The utility model relates to the technical field of water rocket experimental equipment, in particular to a water rocket altimeter, which comprises a power supply module, an attitude data acquisition module, a data transmission module, a remote control receiving module and an electromagnetic lock driving module, the power supply module is electrically connected with the attitude data acquisition module, the data transmission module, the remote control receiving module and the electromagnetic lock driving module, the attitude data acquisition module is in communication connection with the data transmission module, and the remote control receiving module is in signal connection with the electromagnetic lock driving module through a signal line. A remote control signal is received through the GLX433RX module, a macro relay HFD / 3 is triggered through an S8050 triode, and an SX1308 boosting chip is matched to drive an electromagnetic lock to achieve 0.1-second top-speed parachute opening. The ten-axis sensor and the full-duplex module form closed-loop control to adjust the parachute opening time in real time; the shunt power supply ensures stable operation of strong current and weak current, the RS485 serial port and 433MHz wireless anti-interference design ensures accurate execution of instructions, and the improvement of high performance and reliability of the water rocket altimeter is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to water rocket experiment equipment technical field, concretely relates to a water rocket altimeter. BACKGROUND

[0002] In the water rocket experiment technical field, the quick and accurate opening of the parachute is the core link of guaranteeing the safety of equipment and the integrity of experimental data. The existing water rocket parachute opening system generally has the following defects: first, the response speed of parachute opening is slow. The traditional scheme adopts mechanical delay structure or conventional electric control release mode. Some devices rely on mechanical gear transmission or spring force to realize delay trigger. From the pressing of the opening key by the operator to the transmission of the trigger signal to the parachute opening mechanism to the complete unfolding of the parachute, the whole process generally takes more than 0.5 seconds. Second, the accuracy of parachute opening is insufficient. The traditional structure is affected by factors such as mechanical matching error and signal transmission interference, and the opening time of the parachute is prone to deviation. Therefore, there is an urgent need for a water rocket altimeter that can realize extremely short time consumption and extremely high accuracy from the triggering of the instruction to the opening of the parachute. SUMMARY

[0003] The utility model aims at overcoming the above problems, and provides a water rocket altimeter.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A water rocket altimeter, comprising a power module, an attitude data acquisition module, a data transmission module, a remote control receiving module and an electromagnetic lock driving module, the power module is electrically connected with the attitude data acquisition module, the data transmission module, the remote control receiving module and the electromagnetic lock driving module respectively, the attitude data acquisition module is in communication connection with the data transmission module, and the remote control receiving module is in signal connection with the electromagnetic lock driving module through a signal line;

[0006] The attitude data acquisition module adopts an IMU948 attitude ten-axis sensor, and the IMU948 attitude ten-axis sensor is in communication connection with a set-core micro A69-F2GM20 full-duplex data transparent transmission chip of the data transmission module through an RS485 serial port.

[0007] Further, the power module comprises a lithium battery, an SX1308 voltage boosting chip and an LOD1 voltage stabilizing chip, the output end of the SX1308 voltage boosting chip is used for supplying power to a 5V circuit, and the output end of the LOD1 voltage stabilizing chip is used for supplying power to a 3.3V circuit.

[0008] Further, the data transmission module comprises a set-core micro A69-F2GM20 full-duplex data transparent transmission chip, and the set-core micro A69-F2GM20 full-duplex data transparent transmission chip is connected with a computer receiving end through a full-duplex communication link.

[0009] Further, the remote control receiving module comprises a GLX433RX switch quantity, which communicates with the handheld remote controller through 433MHz wireless signals.

[0010] Further, the electromagnetic lock driving module comprises an S8050 triode and a Haofa relay HFD / 3, the base of the S8050 triode is connected with the GLX433RX switch quantity, the collector is connected with the Haofa relay HFD / 3, and the contact end of the Haofa relay HFD / 3 is connected with the electromagnetic lock.

[0011] Further, the power module further comprises a power switch and a USB charging port, the power switch is connected in series in the power supply circuit of the lithium battery, the SX1308 voltage boosting chip and the LOD1 voltage stabilizing chip, and the USB charging port is connected with the lithium battery input port.

[0012] The utility model has the advantages that:

[0013] The utility model adopts the GLX433RX switch quantity module to receive 433MHz remote control signals, triggers the Haofa relay HFD / 3 to act after the signal amplification of the S8050 triode, cooperates the 5V large current driving electromagnetic lock provided by the SX1308 voltage boosting chip, realizes 0.1 second level extremely fast response, the ten-axis sensor and full duplex transmission module constitute closed loop control, and the flight attitude is monitored in real time and is dynamically adjusted to open the parachute opportunity, the modular power management is powered by the SX1308 voltage boosting chip and the LOD1 voltage stabilizing chip respectively for 5V strong current and 3.3V weak current, ensures the stable operation of system, and the RS485 serial port and 433MHz wireless communication adopt industrial grade anti-interference protocol, and the high performance and reliability of water rocket altimeter are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the system connection diagram of one kind water rocket altimeter in embodiment 1.

[0015] Figure 2 It is the remote control key circuit principle diagram of one kind water rocket altimeter in embodiment 1.

[0016] Figure 3 It is the circuit connection diagram of one kind water rocket altimeter in embodiment 1.

[0017] Figure 4 It is the software interface of computer end of one kind water rocket altimeter in embodiment 1. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0019] The utility model will be introduced in detail and specifically through specific embodiments below, so that the utility model can be better understood. However, the following embodiments do not limit the protection scope of the utility model.

[0020] Embodiment 1

[0021] The embodiment discloses a water rocket altimeter.

[0022] A water rocket altimeter, comprising a power module, an attitude data acquisition module, a data transmission module, a remote control receiving module, an electromagnetic lock driving module, the power module is electrically connected with the attitude data acquisition module, the data transmission module, the remote control receiving module and the electromagnetic lock driving module respectively, the attitude data acquisition module is in communication connection with the data transmission module, the remote control receiving module is signal connected with the electromagnetic lock driving module through a signal line;

[0023] The attitude data acquisition module adopts IMU948 posture ten-axis sensor, and the IMU948 posture ten-axis sensor is in communication connection with the data transmission module through an RS485 serial port and a set core micro A69-F2GM20 full-duplex data transmission chip.

[0024] The IMU948 ten-axis attitude sensor collects technical parameters such as height air pressure, temperature, magnetic field, acceleration and angular velocity in the flight of the water rocket in real time, provides core flight data for the system, and is the basis for realizing attitude calculation and height measurement.

[0025] Further, the power module comprises a lithium battery, an SX1308 voltage boosting chip and an LOD1 voltage stabilizing chip, the output end of the SX1308 voltage boosting chip is used for supplying power to a 5V circuit, and the output end of the LOD1 voltage stabilizing chip is used for supplying power to a 3.3V circuit.

[0026] The lithium battery is used as the core energy source of the system, and outputs a voltage of 3.7V to supply power to the entire circuit, thereby ensuring long-time stable operation of the system.

[0027] The SX1308 voltage boosting chip boosts the original voltage of 3.7V provided by the lithium battery to 5V, thereby providing stable power supply for the macro-acting relay HFD / 3 and the electromagnetic lock which need to be driven by a large current. The high-efficiency voltage boosting characteristic meets the instantaneous high-power requirement of the strong current module.

[0028] The LOD1 voltage stabilizing chip accurately reduces the 5V voltage output by the SX1308 voltage boosting chip to 3.3V, and provides a stable voltage for the IMU948 ten-axis sensor, the A69-F2GM20 module, and the GLX433RX module, so as to avoid affecting the signal transmission accuracy due to voltage fluctuation.

[0029] Further, the data transmission module comprises an A69-F2GM20 full-duplex data transparent chip, which is connected with the computer receiving end through a full-duplex communication link.

[0030] The A69-F2GM20 full-duplex data transparent chip serves as a data interaction hub, receives RS485 serial port data of the IMU948 sensor, and transmits the data to the computer receiving end through a full-duplex communication link; at the same time, the A69-F2GM20 full-duplex data transparent chip forwards the control instructions from the computer end to the altimeter internal module, so as to realize bidirectional real-time communication.

[0031] Further, the remote control receiving module comprises a GLX433RX switching value, which communicates with the handheld remote controller through a 433MHz wireless signal.

[0032] The GLX433RX switching value module adopts a 433MHz half-duplex communication protocol, receives the wireless switching value signal sent by the handheld remote controller GLX433FK, and converts the signal into an electrical signal output to the base of the S8050 triode, so as to trigger the electromagnetic lock driving circuit to act.

[0033] Further, the electromagnetic lock driving module comprises an S8050 triode and a HFD / 3 relay, the base of the S8050 triode is connected with the GLX433RX switching value, the collector is connected with the HFD / 3 relay, and the contact end of the HFD / 3 relay is connected with the electromagnetic lock.

[0034] The S8050 low-voltage large-current switching triode serves as a signal amplifier and switching element, and its base is turned on after receiving the electrical signal of the GLX433RX module, and the collector is connected with the HFD / 3 relay, so as to convert the weak electrical signal into a current sufficient to drive the relay, and realize the control of a small signal on a strong current circuit.

[0035] After the coil of the HFD / 3 relay is powered on, the contact is closed, and the 5V large current provided by the SX1308 voltage boosting chip is conducted to the output port of the electromagnetic lock. The high reliability and fast response characteristics of the HFD / 3 relay ensure the instantaneous activation of the electromagnetic lock.

[0036] The electromagnetic lock receives 5V large current through the HFD / 3 contact of the macro relay, and then the internal electromagnetic coil generates a strong magnetic field to drive the lock to be ejected at high speed. The lock is connected with the parachute through the rubber band, and the ejection action triggers the parachute to be unfolded instantly, so that the water rocket is safely recovered.

[0037] Further, the power module further comprises a power switch and a USB charging port, the power switch is connected in series in the power supply circuit of the lithium battery, the SX1308 voltage boosting chip and the LOD1 voltage stabilizing chip, and the USB charging port is connected with the lithium battery input port.

[0038] The power switch is connected in series in the power supply circuit of the lithium battery and the voltage boosting / stabilizing chip, and the power input of the whole system is controlled through physical on-off, so that the safety and convenience of experimental operation are ensured.

[0039] The USB charging port is directly connected with the lithium battery input port, external USB power can be used to charge the lithium battery, and the rapid recovery of the system endurance is realized.

[0040] The electromagnetic lock output port is the electrical interface of the electromagnetic lock, and the 5V large current conducted by the HFD / 3 macro relay is transmitted to the electromagnetic lock, so that the lock ejection action is completed in a very short time.

[0041] During the operation, the operator first closes the power switch, so that the power lithium battery is connected to the circuit. The lithium battery is the initial energy supply end of the system, and outputs a 3.7V voltage, which is transmitted to the U4 SX1308 voltage boosting chip. The U4 SX1308 voltage boosting chip can boost the 3.7V voltage to 5V, and provide stable power support for the macro relay HFD / 3 and other circuit modules in the system.

[0042] Then, the 5V voltage is transmitted to the LOD1 voltage stabilizing chip. The LOD1 voltage stabilizing chip reduces and stabilizes the 5V voltage to 3.3V, and provides an adaptive working voltage for the low-power circuit modules such as the attitude ten-axis sensor and the A69-F2GM20 full-duplex data transmission chip, so as to ensure the stable operation of these modules.

[0043] After the system is powered stably, the attitude ten-axis sensor starts to work. The sensor uses its built-in multiple sensitive elements to collect real-time key parameters such as altitude pressure, temperature, magnetic field, acceleration, angular velocity and the like during the flight of the water rocket. The collected data is sent to the Jiumi A69-F2GM20 full-duplex data transparent chip. After receiving the data, the Jiumi A69-F2GM20 full-duplex data transparent chip accurately transmits the data to the Jiumi A69-F2GM20 chip at the receiving end of the computer through the TX and RX full-duplex communication lines. The Jiumi A69-F2GM20 chip at the computer end transmits the received data to the upper computer software, the upper computer software analyzes and processes the data, and presents the data report and visual image on the computer screen, providing intuitive water rocket flight state information for the operator.

[0044] When it is necessary to trigger the opening of the water rocket parachute, the operator operates through the handheld remote controller. The operator presses the switch on the handheld remote controller, and the remote controller sends a control signal in half-duplex communication mode through the GLX433FK switch quantity. After the GLX433RX switch quantity module on the circuit board receives the signal, it is converted into an electrical signal and transmitted to the S8050 low-voltage and high-current switching triode. After the S8050 triode receives the electrical signal, it is turned on, thereby triggering the HFD / 3 macro-drive relay. After the HFD / 3 macro-drive relay is turned on, 5V high current is obtained from the SX1308 boost chip and delivered to the electromagnetic lock. The strong current causes a strong magnetic field inside the electromagnetic lock, prompting the lock catch to be ejected in an instant. Since the lock catch and the parachute are connected by a rubber band, the tension generated by the ejection of the lock catch causes the rubber band to deform, and the counterforce of the rubber band causes the parachute to open instantly. The structure combining the wireless remote control switch quantity and the electromagnetic lock ejection has extremely high response speed and precision, and the time interval from pressing the switch key to opening the parachute is less than 0.1 second, which has a significant advantage in the opening speed and precision of the parachute in the high-altitude environment.

[0045] The specific embodiments of the utility model are described in detail above, but it is only as an example, the utility model is not equal to the specific embodiments described above. For those skilled in the art, any equivalent modification and substitution to the utility model are also within the scope of the utility model. Therefore, any equivalent transformation and modification made without departing from the spirit and scope of the utility model should be covered within the scope of the utility model.

Claims

1. A water rocket altimeter, characterized in that: It includes a power supply module, an attitude data acquisition module, a data transmission module, a remote control receiving module, and an electromagnetic lock drive module. The power supply module is electrically connected to the attitude data acquisition module, the data transmission module, the remote control receiving module, and the electromagnetic lock drive module. The attitude data acquisition module is communicatively connected to the data transmission module. The remote control receiving module is signal connected to the electromagnetic lock drive module through a signal line. The attitude data acquisition module uses an IMU948 attitude 10-axis sensor, which communicates with the data transmission module's A69-F2GM20 full-duplex data pass-through chip via an RS485 serial port.

2. The water rocket altimeter according to claim 1, characterized in that: The power module includes a lithium battery, an SX1308 boost converter chip, and a LOD1 voltage regulator chip. The output of the SX1308 boost converter chip provides a 5V circuit, and the output of the LOD1 voltage regulator chip provides a 3.3V circuit.

3. The water rocket altimeter according to claim 2, characterized in that: The data transmission module includes a Corechip A69-F2GM20 full-duplex data pass-through chip, which is connected to the computer receiver via a full-duplex communication link.

4. The water rocket altimeter according to claim 3, characterized in that: The remote control receiver module includes a GLX433RX switch, which communicates with the handheld remote control via a 433MHz wireless signal.

5. A water rocket altimeter according to claim 4, characterized in that: The electromagnetic lock drive module includes an S8050 transistor and a Hongfa relay HFD / 3. The base of the S8050 transistor is connected to the GLX433RX switch, and the collector is connected to the Hongfa relay HFD / 3. The contact terminal of the Hongfa relay HFD / 3 is connected to the electromagnetic lock.

6. A water rocket altimeter according to claim 5, characterized in that: The power module also includes a power switch and a USB charging port. The power switch is connected in series in the power supply circuit of the lithium battery, the SX1308 boost chip, and the LOD1 voltage regulator chip. The USB charging port is connected to the lithium battery input port.

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