Elevator noise detection position self-checking device

Abstract

The invention discloses an elevator noise detection position self-checking device, and belongs to the technical field of elevator noise detection. Comprising a main control unit, and the main control unit is connected with a power management unit, a noise detection module, a distance detection module, a threshold preset unit and an optical feedback unit. The noise detection module comprises a noise sensor used for collecting noise; the distance detection module comprises a TOF laser distance measuring sensor and is used for verifying whether the distance between the noise sensor and the measured object meets the industrial standard or not and prompting the compliance state in real time through an optical feedback unit. A microphone of the noise sensor and a probe of the TOF laser distance measuring sensor are coaxially mounted, so that the sound wave receiving direction is consistent with the distance measuring direction; when the elevator noise detection position self-checking device carries out noise detection, a noise value is measured through the noise position self-checking method under the condition that the industrial standard is met. According to the invention, the technical threshold of detection personnel can be greatly reduced, and the normative requirement is met.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator noise detection, and in particular to an elevator noise detection position self-checking device. Background Art

[0002] TSG T7001-2023 stipulates that elevator noise detection must be performed within a specific distance range (such as 1.5m from the ground and 1.0m from the drive host). Traditional methods rely on manual positioning (such as tape measurement), which is prone to detection position deviation due to operational errors, resulting in invalid data. Existing noise detection equipment lacks distance self-verification function and cannot provide real-time feedback on position compliance. Summary of the invention

[0003] The object of the present invention is to overcome the deficiencies of the prior art and provide an elevator noise detection position self-checking device.

[0004] The objective of the present invention is achieved through the following technical solutions: an elevator noise detection position self-checking device, comprising a main control unit, the main control unit is connected to a power management unit, a noise detection module, a distance detection module, a threshold preset unit and an optical feedback unit; the noise detection module comprises a noise sensor for collecting noise; the distance detection module comprises a TOF laser ranging sensor for verifying whether the distance between the noise sensor and the object to be measured meets the industry standard, and prompts the compliance status in real time through the optical feedback unit; the microphone of the noise sensor is coaxially installed with the probe of the TOF laser ranging sensor, so that the sound wave receiving direction is consistent with the ranging direction; when the elevator noise detection position self-checking device performs noise detection, the noise value is measured by the noise position self-checking method under the condition of meeting the industry standard.

[0005] Preferably, the elevator noise detection position self-calibration device is installed on a magnetic base, and the magnetic base is installed on a quick-detachable magnetic bracket; the TOF laser ranging sensor is provided with two probes, both of which are installed on the device housing, the first TOF laser ranging sensor probe is used to measure the horizontal distance, and the second TOF laser ranging sensor probe is used to measure the vertical distance, and the main control unit synchronously collects the two-way ranging data and judges the compliance in real time; the microphone of the noise sensor is coaxially installed with the first TOF laser ranging sensor probe.

[0006] Preferably, the optical feedback unit includes a two-color LED lamp and a laser locator. The laser locator is used to emit a visible light spot to mark the position of the standard measuring point. If the distance exceeds a preset distance during the detection process, the red light will immediately flash and data recording will be suspended. After repositioning to the preset distance, the green light will light up, and the recorded data is valid.

[0007] Preferably, the main control unit uses an ESP32-C3 chip, and the power management unit is powered by an 18650 lithium battery.

[0008] Preferably, the noise detection module is connected to the main control unit through an I²C interface; the distance detection module is connected to the main control unit through a UART interface; the threshold preset unit is connected to the main control unit through a GPIO interface; the main control unit controls the working state of the optical feedback unit through a PWM signal.

[0009] Preferably, the industry standard is the TSG T7001 standard.

[0010] Preferably, the noise position self-checking method includes the following steps: Start and select the detection mode; Adjust the distance between the elevator noise detection position self-checking device and the object to be measured, and then judge whether the distance is compliant. If the distance is compliant, the green light is on, start noise detection, continuously monitor and record data; if the distance is not compliant, the red light flashes, adjust the position until it is compliant.

[0011] Preferably, the elevator noise detection position self-checking device automatically records the data during the green light period, and the data during the red light period is marked as invalid.

[0012] The beneficial effects of the present invention are: 1) Through the hardware collaboration + program logic closed-loop design, the distance requirements in the inspection regulations are transformed into a quantifiable device self-checking function, greatly reducing the technical threshold of the inspectors, and at the same time meeting the strict requirements of TSG T7001-2023 for the standardization during the inspection process.

[0013] 2) Taking the distance verification as a precondition for noise detection, only the data under the green light state is valid, fundamentally preventing illegal operations, automatically shielding the noise data during the red light period, and ensuring the compliance of the inspection report.

[0014] 3) The noise sensor microphone and the laser ranging probe are coaxially installed to ensure that the sound wave receiving direction is the same as the ranging direction, and the spatial deviation can be eliminated. Description of the Drawings

[0015] Figure 1 is the principle block diagram of the elevator noise detection position self-checking device; Figure 2 is the installation A-direction view of the elevator noise detection position self-checking device; Figure 3 is the layout schematic diagram of the noise sensor microphone and the laser ranging probe; Figure 4 is the flow chart of the noise position self-checking method. Detailed Embodiments

[0016] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0017] Referring to Figures 1-4 , the present invention provides a technical solution: an elevator noise detection position self-checking device, which includes a main control unit. The main control unit is connected to a power management unit, a noise detection module, a distance detection module, a threshold preset unit, and an optical feedback unit. The noise detection module includes a noise sensor for collecting noise. The distance detection module includes a TOF laser rangefinder for verifying whether the distance between the noise sensor and the object to be measured meets the industry standard, and real-time prompting the compliance status through the optical feedback unit. The microphone of the noise sensor and the probe of the TOF laser rangefinder are coaxially installed so that the sound wave receiving direction is consistent with the ranging direction. When the elevator noise detection position self-checking device performs noise detection, the noise value is measured under the condition of meeting the industry standard through the noise position self-checking method.

[0018] In this embodiment, by verifying in real time whether the distance between the sensor and the object to be measured meets the TSG T7001-2023 standard and triggering an optical prompt signal, the validity of the noise detection data is ensured. Noise detection module: An A-weighted sound level meter compliant with the IEC61672 standard is used, with a dynamic range of 30 - 130 dB and a frequency response of 31.5 Hz to 8 kHz, directly outputting the noise decibel value. Distance detection module: An integrated TOF (Time of Flight) laser ranging sensor with a measurement range of 0.1 - 5 m and a resolution of ±1 mm is used to measure the distance between the sensor and the object to be measured (such as the ground, landing door, etc.) in real time. Threshold preset unit: Built-in TSG T7001 standard distance parameters (such as 1.5 m, 0.24 m), and the scene mode (car / landing door / machine room) can be switched through physical buttons. It also includes a logic judgment unit: When the measured distance is within ±1% of the standard value, it is judged to be compliant; otherwise, it is over-limit. Dual-color LED array: Red and green dual-color LED lights are embedded in the front of the housing. The green light is constantly on when compliant, and the red light flashes (frequency 2 Hz) when over-limit. Laser-assisted positioning: The optical feedback unit synchronously emits a visible laser spot to help the operator quickly adjust the position of the device to the compliant area (the laser spot is the standard measurement point when the green light is on). Coaxial packaging design: The noise sensor microphone and the laser ranging probe are coaxially installed to ensure that the sound wave receiving direction is exactly the same as the ranging direction, eliminating spatial deviation. Quick-release bracket: An adjustable magnetic base is used, supporting 0° to 90° rotation, and can be adsorbed onto a metal surface (such as the car wall) with one key. When disassembling, the pulling force is ≥5 N to prevent falling off. Main control chip: ESP32-C3 (integrated Wi-Fi), receiving data from the noise module (I²C interface) and the ranging module (UART interface). Power management: Powered by a 18650 lithium battery, with a battery life of ≥12 hours in low-power mode, and the red light flashes twice when the battery level is lower than 10% for warning.

[0019] In some embodiments, the elevator noise detection position self-checking device is installed on a magnetic base, and the magnetic base is installed on a quick-release magnetic bracket; two probes of the TOF laser ranging sensor are provided and are both installed on the device housing. The first TOF laser ranging sensor probe is used to measure the horizontal distance, and the second TOF laser ranging sensor probe is used to measure the vertical distance. The main control unit synchronously collects the ranging data of the two channels and judges the compliance in real time; the microphone of the noise sensor is coaxially installed with the first TOF laser ranging sensor probe.

[0020] In this embodiment, two TOF laser ranging probes are installed side by side on the device housing: Probe 1: In the horizontal direction, specifically for measuring the distance to the drive host, landing door, etc. Probe 2: Vertically downward, specifically for measuring the ground distance. The main control chip (ESP32-C3) synchronously collects the ranging data of the two channels and judges the compliance in real time. Operating logic: When the detection is started, the two probes work simultaneously to obtain the horizontal and vertical distance data respectively. If the limit is exceeded in any direction (such as the vertical distance deviation > 1%), the optical feedback unit triggers the red light to flash and pauses the recording of noise data. Advantage: No mechanical rotation is required, with fast response speed and high reliability. It is suitable for scenarios with high real-time requirements.

[0021] In some embodiments, the optical feedback unit includes a two-color LED lamp and a laser locator. The laser locator is used to emit a visible light spot to mark the position of the standard measurement point. If the distance exceeds the preset distance during the detection process, the red light will immediately flash and the data recording will be paused. After repositioning within the preset distance, the green light will turn on, and the recorded data will be valid.

[0022] In some embodiments, the main control unit uses an ESP32-C3 chip, and the power management unit is powered by an 18650 lithium battery.

[0023] In some embodiments, the noise detection module is connected to the main control unit through an I²C interface; the distance detection module is connected to the main control unit through a UART interface; the threshold preset unit is connected to the main control unit through a GPIO interface; the main control unit controls the working state of the optical feedback unit through a PWM signal.

[0024] In some embodiments, the industry standard is the TSG T7001 standard.

[0025] In some embodiments, the noise position self-checking method includes the following steps: Start and select the detection mode; Adjust the distance between the elevator noise detection position self-checking device and the object to be measured, and then judge whether the distance is compliant. If the distance is compliant, the green light will turn on, start the noise detection, and continuously monitor and record the data; if the distance is not compliant, the red light will flash, and adjust the position until it is compliant.

[0026] In this embodiment, the following steps are included: Step 1: Select the detection mode (such as car mode → standard distance 1.5m). Step 2: Move the device close to the area to be measured, observe the position of the laser spot and move the device until the green light comes on. Step 3: Start the noise detection. The device automatically records the data during the "green light period", and the data during the red light period is marked as invalid. If the distance exceeds the limit during the detection process (such as displacement caused by loose brackets), the red light will flash immediately and data recording will be paused. It is necessary to reposition to the green light state to continue. The laser marking is automatically activated in the compliant state (green light), realizing an intuitive operation of "what you see is what you measure".

[0027] In some embodiments, the elevator noise detection position self-checking device automatically records the data during the green light period, and the data during the red light period is marked as invalid.

[0028] As Figure 1 shown, the data input and output path: The noise detection module is connected to the main control chip through the I²C interface to transmit the noise decibel value (30 - 130 dB) in real time. Distance detection module: It is connected to the main control chip through the UART interface to send real-time ranging data (resolution ±1 mm). Threshold preset unit: It is connected to the main control chip through the GPIO interface, supporting physical button switching of the scenario mode (car / landing door / machine room). Optical feedback unit: Controls the LED state (green light always on / red light flashing) and the start and stop of the laser locator through the PWM signal. Power management module: The 18650 lithium battery is stepped down to 3.3V through the DC-DC circuit to supply power to the entire system. The main control chip monitors the battery power through the ADC, and triggers a double flash warning of the red light when it is lower than 10%. Mechanical connection: The noise sensor and the laser ranging probe are coaxially encapsulated to ensure that the sound wave receiving direction is consistent with the ranging direction. The quick-release magnetic bracket is magnetically adsorbed on the metal surface, supporting 0° - 90° rotation, and the pulling force ≥5N. Optical feedback unit: LED state, laser positioning start and stop. Data storage: Only the data during the compliant period is stored in the report, and the data exceeding the limit is automatically filtered.

[0029] The input data includes: Noise module: Real-time sound pressure level (A-weighted); Ranging module: Real-time distance value (unit: meter).

[0030] The logical judgment process is as follows: The above is only the preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. And the changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. An elevator noise detection position self-checking device, characterized in that: It includes a main control unit, which is connected to a power management unit, a noise detection module, a distance detection module, a threshold preset unit, and an optical feedback unit; the noise detection module includes a noise sensor for collecting noise; the distance detection module includes a TOF laser rangefinder for verifying whether the distance between the noise sensor and the object to be measured meets the industry standard, and the compliance status is prompted in real time through the optical feedback unit; the microphone of the noise sensor and the probe of the TOF laser rangefinder are coaxially installed so that the sound wave receiving direction is the same as the ranging direction; when the elevator noise detection position self-checking device performs noise detection, the noise value is measured under the condition of meeting the industry standard through the noise position self-checking method.

2. The elevator noise detection position self-checking device according to claim 1, characterized in that: The elevator noise detection position self-checking device is installed on a magnetic base, and the magnetic base is installed on a quick-release magnetic bracket; there are two probes of the TOF laser rangefinder, both of which are installed on the device housing. The first TOF laser rangefinder probe is used to measure the horizontal distance, and the second TOF laser rangefinder probe is used to measure the vertical distance. The main control unit synchronously collects the ranging data of the two channels and judges the compliance in real time; the microphone of the noise sensor is coaxially installed with the first TOF laser rangefinder probe.

3. The elevator noise detection position self-checking device according to claim 1, characterized in that: The optical feedback unit includes a two-color LED light and a laser locator. The laser locator is used to emit a visible light spot to mark the standard measurement point position. If the distance exceeds the preset distance during the detection process, the red light will flash immediately and the data recording will be paused. After repositioning within the preset distance, the green light will turn on, and the recorded data will be valid.

4. The elevator noise detection position self-checking device according to claim 1, characterized in that: The main control unit uses an ESP32-C3 chip, and the power management unit is powered by an 18650 lithium battery.

5. The elevator noise detection position self-checking device according to claim 1, wherein: The noise detection module is connected to the main control unit through an I²C interface; the distance detection module is connected to the main control unit through a UART interface; the threshold preset unit is connected to the main control unit through a GPIO interface; the main control unit controls the working state of the optical feedback unit through a PWM signal.

6. The elevator noise detection position self-checking device according to claim 1, characterized in that: The industry standard is the TSG T7001 standard.

7. The elevator noise detection position self-checking device according to any one of claims 1-6, characterized in that: The noise position self-checking method includes the following steps: Start and select the detection mode; Adjust the distance between the elevator noise detection position self-checking device and the object to be measured, and then judge whether the distance is compliant. If the distance is compliant, the green light will turn on, start noise detection, and continuously monitor and record data; if the distance is not compliant, the red light will flash, and adjust the position until it is compliant.

8. The elevator noise detection position self-checking device according to claim 7, characterized in that: The elevator noise detection position self-checking device automatically records the data during the green light period, and the data during the red light period is marked as invalid.

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