A detection system for response time of a wireless remote control device for a hoisting machine

Abstract

The utility model discloses a hoisting machinery wireless remote control device response time's detection system relates to response time detection technical field. Wireless remote control device is placed in the clamping groove of handheld terminal, and handheld terminal is through the signal that transmitter and receiver capture wireless remote control device sent, adopts voltage mutation detection circuit monitoring the output state of wireless remote control device power loop to detection module, when wireless remote control device response, record occurrence time and feedback to handheld terminal, data analysis module is through the processing of DSP chip to launch time and response time, obtains time difference. The utility model realizes simple, fast measurement to hoisting machinery wireless remote control device signal response time, is favorable to hoisting machinery inspection personnel's work in the detection of, the detection of full, the detection of accurate, in time discovers hoisting machinery wireless remote control device fault and problem, guarantees hoisting machinery's inspection and use safety.

Description

Technical Field

[0001] This utility model relates to the field of response time detection technology, and more specifically to a system for detecting the response time of a wireless remote control device for lifting machinery. Background Technology

[0002] The patent, CN 116242414A, describes a response time detection system and device. The system sends a test signal to a signal influencing module based on a test control signal, and determines an interval time based on the feedback signal from the signal influencing module before sending it to a timing control module. The signal influencing module performs image processing on the test signal according to the influence control signal and generates a feedback signal. The timing control module sends both the test control signal and the influence control signal, and determines the response time of the instrument under test based on the interval time.

[0003] The patent applies to the detection of the response time of photoelectric sensors, which can be used in the application of lifting machinery to detect the time from the button press of a wireless remote control device to the transmission of a control signal.

[0004] The "Safety Technical Regulations for Lifting Machinery" (TSG 51-2023) specifies requirements for the response time of wireless remote controls: the response time of the wireless control system to a stop signal should not exceed 550ms; when the receiver is subjected to noise interference or a fault such as not being able to detect a high-frequency carrier signal, it should shut down all output signals within 0.5s. Therefore, the content of this patent cannot be used to measure the response time of the wireless remote control device for lifting machinery.

[0005] Therefore, how to solve the above-mentioned technical problems still needs to be further studied by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a detection system for the response time of a wireless remote control device for lifting machinery.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A system for detecting the response time of a wireless remote control device for lifting machinery includes: a handheld terminal, a detection module, and a data analysis module; the wireless remote control device is placed in a slot of the handheld terminal, and the handheld terminal captures the signal emitted by the wireless remote control device through a transmitter and a receiver; the detection module uses a voltage surge detection circuit to monitor the output state of the power circuit of the wireless remote control device, and when the wireless remote control device responds, it records the occurrence time and feeds it back to the handheld terminal; the data analysis module processes the transmission time and response time through a DSP chip to obtain the time difference.

[0009] Optionally, it also includes an interference module for generating interference signals to overwhelm the wireless remote control device signal, recording the start time of the interference and feeding it back to the handheld terminal, simulating the situation where the receiver is affected by noise interference and cannot detect the high-frequency carrier signal.

[0010] Optionally, a report generation module is also included, which is used to generate a test report based on the test results from the data analysis module.

[0011] Optionally, the connection relationship of the power circuit of the wireless remote control device is based on the power supply. The external 24V power supply is connected to the U3 linear regulator chip of the 24V-5V circuit module. After filtering by C10 and C11, a 5V voltage is output. This 5V voltage directly supplies the 5V_LED circuit to light up the 5V power indicator. On the other hand, it is filtered by decoupling capacitors C3-C6 to generate VCC3.3V. VCC3.3V supplies power to the VCC3.3V pin of the STM32 chip, the ST-LINK download circuit, the VCC3.3V_LED circuit, and the pull-up resistor R4 of the reset circuit. Among them, VCC3.3V_LED... The D circuit also connects to the STM32 via PA8 to support software control of LED2. The STM32 serves as the core, with its PB4 connected to the negative terminal of LED2 for status feedback. A 32.768kHz crystal oscillator is connected to PD0 and PD1 via a 22pF capacitor to provide a low-speed clock, while the 8MHz crystal oscillator and related circuits provide a high-speed clock. ST-LINK's SWCLK, SWDIO, and SWO are connected to PA14, PA13, and P13 respectively for debugging. The NRESET pin of the reset circuit is connected to the NRESET pin of the STM32. Under normal conditions, R4 pulls up the NRESET pin to keep it at a high level, and when the button is pressed, it is pulled low to trigger the reset.

[0012] Optionally, in the detection scenario, the detection module monitors the output status of the power circuit through a voltage change detection circuit, and the interference module generates interference in a specified frequency band and records the time. Both interact with the handheld terminal to jointly achieve response time detection.

[0013] Optionally, the power supply section of the report generation module achieves power conversion through a DC-DC step-down circuit. The 5V input is filtered by an inductor and capacitor before being output as 5V by the chip. Then, the 5V is converted to 3.3V by the LP2980AIM5 chip. During the conversion process, the output voltage is set by a resistor divider. The 3.3V power supply is filtered by a capacitor and supplies power to the MCU core, some pins of CH340, and the LoRa module. The 1.5V power supply supplies the DC-DC module, LED circuit, some pins of CH340, and the reset circuit. The MCU is the core. The VCC pin of the MCU is connected to the 3.3V power supply, and GND is grounded. The RESET pin is connected to the reset circuit. When the button is pressed, the reset signal is pulled low to restart the MCU. At the same time, the reset circuit is also connected to the reset pin of the LoRa module to ensure synchronous reset.

[0014] Optionally, in the communication module of the report generation module, the TXD and RXD pins of CH340 are connected to the serial port pins of the MCU to realize USB and serial port data pass-through, and the SPI interface is connected to the wireless module through SCLK, MOSI, MISO, and CS to realize data transmission and reception; in the functional module, the four LEDs are connected to 5V through a 4.7kΩ current-limiting resistor, and the negative terminal is connected to the MCU pin. The MCU controls the level to realize the on / off status feedback. The VCC of the LoRa module is connected to 3.3V and GND is grounded. The RE, TXD, and RXD pins of the LoRa module are connected to the MCU to realize mode control and data transmission and reception. The D47 and D14 pins of the LoRa module provide feedback on the working status.

[0015] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a detection system for the response time of a wireless remote control device for lifting machinery. This system enables simple and quick measurement of the signal response time of the wireless remote control device for lifting machinery, which is beneficial for lifting machinery inspectors to detect, inspect completely and accurately, promptly identify faults and problems of the wireless remote control device for lifting machinery, and ensure the safety of inspection and use of lifting machinery. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 For the power supply module of the power circuit;

[0018] Figure 2 This is a diagram showing the MCU pin connections for the power circuit.

[0019] Figure 3 This is a voltage surge detection circuit;

[0020] Figure 4 This is a DC-DC step-down circuit diagram for the display module;

[0021] Figure 5 The circuit diagram for the 3.3V-5V DC-DC step-down converter of the display module;

[0022] Figure 6 This is a circuit diagram of the CH340 serial port conversion module for display.

[0023] Figure 7 This is the TF circuit diagram for the display module;

[0024] Figure 8 LED indicator circuit of the display module;

[0025] Figure 9 For the LoRa wireless module circuit of the display module;

[0026] Figure 10 This is the MCU circuit for the display module. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] This utility model discloses a system for detecting the response time of a wireless remote control device for lifting machinery, such as... Figures 1-10 As shown, it includes: a handheld terminal, a detection module, and a data analysis module; a wireless remote control device is placed in the card slot of the handheld terminal, and the handheld terminal captures the signal emitted by the wireless remote control device through a transmitter and receiver; the detection module uses a voltage surge detection circuit to monitor the output status of the power circuit of the wireless remote control device, and records the occurrence time when the wireless remote control device responds and feeds it back to the handheld terminal; the data analysis module processes the transmission time and response time through a DSP chip to obtain the time difference. The DSP chip can be an STM32F103C8T6 or an ATMEGA2560-16AU.

[0030] Furthermore, the interference module can generate a sufficiently strong interference signal in a specified frequency band to overwhelm the normal communication signal of the remote control, while accurately recording the start time of the interference and feeding it back to the handheld terminal, simulating a situation where the receiver is interfered with by noise and cannot detect the high-frequency carrier signal.

[0031] Furthermore, the handheld terminal is equipped with a high-sensitivity signal receiver and transmitter, enabling it to quickly and accurately capture signals emitted by the remote control device, record the start time of detection, and receive time signal feedback from the interference module and detection module. Through the handheld terminal's built-in software algorithm model, it can accurately calculate the response time parameters of the wireless remote control device under different conditions, providing basic signal interaction support for response time detection. The handheld terminal can also detect the operating signal frequency of the wireless remote control device and select the corresponding interference module for measurement based on the actual operating signal frequency.

[0032] Furthermore, such as Figure 3 As shown, the voltage surge detection circuit converts the high-voltage AC signal (connected to U, N) into a low-voltage signal (U1N, U2N output) adapted to the back-end analog-to-digital converter (ADC). The core revolves around voltage transformers (TV1, TV2) for step-down, operational amplifiers (U5D, U5C) for amplification / buffering, and RC filtering. It is divided into two paths (U1 and U2 channels) with symmetrical principles. The following is a breakdown of a single path (U1 channel):

[0033] 1. Voltage transformer step-down (TV1)

[0034] Function: To proportionally reduce the high voltage AC (U1 input, connected to the phase line of the power system) to low voltage.

[0035] Parameters: TV1 is a DL-PT202G voltage transformer, which, together with RH1 (220kΩ), enables high-voltage to low-voltage conversion.

[0036] 2. Filtering and Current Limiting (RH3, CH1)

[0037] RH3 (30Ω resistor): Current limiting protection to prevent excessive output current from the transformer from damaging subsequent circuits.

[0038] CH1 (10nF capacitor): High-frequency filter, filters out high-frequency interference from the current transformer output, making the signal "cleaner".

[0039] 3. Operational amplifier / buffer (U5D, TL084 operational amplifier)

[0040] Circuit structure: U5D is configured as a non-inverting amplifier / follower (RH14 and RH13 form feedback, and RH15 and RH16 are input bias).

[0041] effect:

[0042] Enhance signal driving capability to match downstream load;

[0043] By utilizing the high input impedance and low output impedance characteristics of operational amplifiers, the current transformer in the front stage is isolated from the circuit in the back stage, thus stabilizing the signal.

[0044] 4. Output filtering (RH26, CH8)

[0045] RH26 (2kΩ resistor) + CH8 (470nF capacitor): RC low-pass filter, further filtering out high-frequency noise from the op-amp output, making the final output signal to U1N smoother and adapting to ADC sampling requirements.

[0046] Relationship between the upper and lower paths (U1, U2)

[0047] The U2 channel (TV2, U5C, etc.) is completely symmetrical to the U1 channel in principle, realizing the sampling and conditioning of the voltage of another phase (or different voltage signals) and outputting U2N. It can be used in scenarios such as three-phase power monitoring and multi-channel voltage acquisition (for example, in power meters, to collect voltages of different phase lines).

[0048] The high-voltage AC signal is converted into a stable, clean, and amplitude-appropriate low-voltage AC signal (as shown in the 60mV correspondence) through a process of "voltage reduction by current transformer → RC filtering → operational amplifier conditioning → further filtering" to provide data for backend ADC acquisition and microcontroller calculation (calculating parameters such as voltage, frequency, and harmonics). This is the "front-end core" for voltage sampling in power monitoring, smart meters, and other equipment.

[0049] Furthermore, the connection relationship of the power circuit of the wireless remote control device is based on the power supply. The external 24V power supply is connected to the U3 linear regulator chip of the 24V-5V circuit module. After filtering by C10 and C11, a 5V voltage is output. This 5V voltage directly supplies the 5V_LED circuit to light up the 5V power indicator. On the other hand, it is filtered by decoupling capacitors C3-C6 to generate VCC3.3V. VCC3.3V supplies power to the VCC3.3V pin of the STM32 chip, the ST-LINK download circuit, the VCC3.3V_LED circuit, and the pull-up resistor R4 of the reset circuit. The ED circuit also connects to the STM32 via PA8 to support software control of LED2. The STM32 serves as the core, with its PB4 connected to the negative terminal of LED2 to provide status feedback. A 32.768kHz crystal oscillator is connected to PD0 and PD1 via a 22pF capacitor to provide a low-speed clock, while the 8MHz crystal oscillator and related circuits provide a high-speed clock. ST-LINK's SWCLK, SWDIO, and SWO are connected to PA14, PA13, and P13 respectively for debugging. The NRESET pin of the reset circuit is connected to the NRESET pin of the STM32. Under normal conditions, R4 pulls up the NRESET pin to keep it at a high level, and when the button is pressed, it is pulled low to trigger the reset.

[0050] Furthermore, in the detection scenario, the detection module monitors the output status of the power circuit through the voltage change detection circuit, and the interference module generates interference in the specified frequency band and records the time. Both interact with the handheld terminal to jointly achieve response time detection.

[0051] Furthermore, the power supply section of the report generation module achieves power conversion through a DC-DC step-down circuit. The 5V input is filtered by an inductor and capacitor before being output as 5V by the chip. Then, the 5V is converted to 3.3V by the LP2980AIM5 chip. During the conversion process, the output voltage is set by a resistor divider. The 3.3V power supply is filtered by a capacitor and supplies power to the MCU core, some pins of the CH340, and the LoRa module. The 1.5V power supply supplies the DC-DC module, the LED circuit, some pins of the CH340, and the reset circuit. The MCU is the core. The VCC pin of the MCU is connected to the 3.3V power supply, and GND is grounded. The RESET pin is connected to the reset circuit. When the button is pressed, the reset signal is pulled low to restart the MCU. At the same time, the reset circuit is also connected to the reset pin of the LoRa module to ensure synchronous reset.

[0052] Furthermore, in the communication module of the report generation module, the CH340's TXD and RXD pins are connected to the MCU's serial port pins to achieve data pass-through between USB and serial port. The SPI interface is connected to the wireless module through SCLK, MOSI, MISO, and CS to achieve data transmission and reception. In the functional module, four LEDs are connected to 5V through a 4.7kΩ current-limiting resistor, and the negative terminal is connected to the MCU pin. The MCU controls the level to achieve on / off status feedback. The LoRa module's VCC is connected to 3.3V and GND is grounded. The LoRa module's RE, TXD, and RXD pins are connected to the MCU to achieve mode control and data transmission and reception. The LoRa module's D47 and D14 pins provide feedback on the working status.

[0053] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A system for detecting the response time of a wireless remote control device for lifting machinery, characterized in that, include: Handheld terminal, detection module, and data analysis module; The wireless remote control device is placed in the card slot of the handheld terminal, and the handheld terminal captures the signal emitted by the wireless remote control device through a transmitter and a receiver; the detection module uses a voltage change detection circuit to monitor the output status of the power circuit of the wireless remote control device, and records the occurrence time when the wireless remote control device responds and feeds it back to the handheld terminal; the data analysis module processes the transmission time and response time through a DSP chip to obtain the time difference.

2. The system for detecting the response time of a wireless remote control device for lifting machinery according to claim 1, characterized in that, It also includes an interference module for generating interference signals to drown out the wireless remote control device signal, recording the start time of the interference and feeding it back to the handheld terminal, simulating the situation where the receiver is affected by noise interference and cannot detect the high-frequency carrier signal.

3. The system for detecting the response time of a wireless remote control device for lifting machinery according to claim 1, characterized in that, It also includes a report generation module, which generates a test report based on the test results from the data analysis module.

4. The system for detecting the response time of a wireless remote control device for lifting machinery according to claim 1, characterized in that, The connection of the power circuit of the wireless remote control device is based on the power supply. An external 24V power supply is connected to the U3 linear regulator chip of the 24V-5V circuit module. After filtering by C10 and C11, a 5V voltage is output. This 5V voltage directly supplies the 5V_LED circuit to light up the 5V power indicator. On the other hand, it is filtered by decoupling capacitors C3-C6 to generate VCC3.3V. VCC3.3V supplies power to the VCC3.3V pin of the STM32 chip, the ST-LINK download circuit, the VCC3.3V_LED circuit, and the pull-up resistor R4 of the reset circuit. The circuit also connects to the STM32 via PA8 to support software control of LED2; the STM32 serves as the core, with its PB4 connected to the negative terminal of LED2 to provide status feedback. A 32.768kHz crystal oscillator is connected to PD0 and PD1 via a 22pF capacitor to provide a low-speed clock, while the 8MHz crystal oscillator and related circuits provide a high-speed clock. ST-LINK's SWCLK, SWDIO, and SWO are connected to PA14, PA13, and P13 respectively for debugging. The NRESET pin of the reset circuit is connected to the NRESET pin of the STM32. Under normal conditions, R4 pulls up the NRESET pin to keep it at a high level, and when the button is pressed, it is pulled low to trigger the reset.

5. The system for detecting the response time of a wireless remote control device for lifting machinery according to claim 1, characterized in that, In the detection scenario, the detection module monitors the output status of the power circuit through the voltage change detection circuit, and the interference module generates interference in the specified frequency band and records the time. Both interact with the handheld terminal to jointly realize response time detection.

6. The system for detecting the response time of a wireless remote control device for lifting machinery according to claim 3, characterized in that, The power supply section of the report generation module achieves power conversion through a DC-DC step-down circuit. The 5V input is filtered by an inductor and capacitor before being output as 5V by the chip. Then, the 5V is converted to 3.3V by the LP2980AIM5 chip. During the conversion process, the output voltage is set by a resistor divider. The 3.3V power supply is filtered by a capacitor and supplies power to the MCU core, some pins of CH340, and the LoRa module. The 1.5V power supply supplies the DC-DC module, LED circuit, some pins of CH340, and the reset circuit. The MCU is the core. The MCU's VCC pin is connected to the 3.3V power supply, and GND is grounded. The RESET pin is connected to the reset circuit. When the button is pressed, the reset signal is pulled low to restart the MCU. At the same time, the reset circuit is also connected to the reset pin of the LoRa module to ensure synchronous reset.

7. The system for detecting the response time of a wireless remote control device for lifting machinery according to claim 3, characterized in that, In the communication module of the report generation module, the CH340's TXD and RXD are connected to the MCU's serial port pins to achieve data pass-through between USB and serial port. The SPI interface is connected to the wireless module through SCLK, MOSI, MISO, and CS to achieve data transmission and reception. In the functional module, four LEDs are connected to 5V via a 4.7kΩ current-limiting resistor, and their negative terminals are connected to the MCU pins. The MCU controls the level to achieve on / off status feedback. The VCC of the LoRa module is connected to 3.3V and GND is grounded. The RE, TXD, and RXD pins of the LoRa module are connected to the MCU to achieve mode control and data transmission and reception. The D47 and D14 pins of the LoRa module provide feedback on the working status.

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