Wireless sound signal sensor based on star flash SLE technology

Abstract

The utility model belongs to the technical field of signal sensors, and discloses a wireless acoustic signal sensor based on a star flash SLE technology, which comprises a shell, the shell is in threaded connection with a lower shell, the lower shell is in threaded connection with an H-shaped base, and an upper shell is arranged between the lower shell and the shell; a lithium battery is mounted in the upper shell, a circuit board and a wireless charging module are mounted on the upper shell and on the side surface of the lithium battery, a battery cover is mounted on the upper shell and at the top end of the lithium battery, and a wireless charging coil is mounted at the top of the battery cover; the lower shell is provided with a switch, and the lower shell is provided with two one-way microphones; the upper side of the interior of the H-shaped base is provided with a silicon chip type microphone, the lower side of the interior of the H-shaped base is provided with a strong magnet with a hole, and the H-shaped base is provided with a sound transmission hole. According to the utility model, a battery and a wireless charging coil of a wireless charging module machine are arranged, so that the working energy problem of the sensor is solved, and a signal line and a power line are not needed.

Description

Technical Field

[0001] The utility model belongs to the technical field of signal sensors, and particularly relates to a wireless acoustic signal sensor based on the SparkLink SLE technology. Background Technique

[0002] The SparkLink SLE technology is a wireless short-range communication protocol architecture. The wireless short-range access technologies provided by this protocol architecture include the SparkLink basic access technology and the SparkLink low-power access technology. SparkLink solves the communication requirements of high speed, low latency, and high reliability between Internet of Things devices, especially showing excellent performance in aspects such as low energy consumption, high speed, and low latency.

[0003] Information such as the rotational speed, torque, temperature, sound, and vibration of mechanical equipment during operation all reflect its current state. Common fault detection means mainly include: fault detection based on temperature signals, fault detection based on vibration signals, and fault detection based on sound signals. Fault detection based on sound signals has relatively low requirements for data transmission. Its analysis method is similar to that of fault detection based on vibration signals, and it also has the ability to detect early minor faults, making it more suitable for early fault detection of mechanical equipment. A complete sound fault detection system should include two major parts: sound acquisition and transmission of the lower computer and software programs of the upper computer. Among them, the sound acquisition device includes a microphone, a signal processing unit, etc., which are responsible for converting the sound signal into an electrical signal, collecting it, and transmitting it to the upper computer; after receiving the signal, the software program of the upper computer processes the signal, including filtering, feature extraction, fault detection, result display, etc.

[0004] When the part of the mechanical equipment that needs to be monitored itself is a rotating part or in a rotating state, traditional sound signal sensors cannot be installed and used under such working conditions due to the existence of power supply wires and signal wires. Content of the Utility Model

[0005] Aiming at the problems raised in the above background technique, the purpose of the present utility model is: to provide a wireless acoustic signal sensor based on the SparkLink SLE technology.

[0006] To achieve the above technical purpose, the technical solution adopted by the present utility model is as follows:

[0007] A wireless acoustic signal sensor based on the SparkLink SLE technology includes a housing, the housing is threadedly connected to a lower housing, the lower housing is threadedly connected to an H-shaped base, and an upper housing is installed between the lower housing and the housing, and the upper housing is located inside the housing;

[0008] A lithium battery is installed inside the upper housing. A circuit board and a wireless charging module are installed on the side of the lithium battery in the upper housing. The circuit board includes a microprocessor, a feature signal extraction module, a storage unit, a StarFlash SLE transparent transmission module, and an indicator light. The lithium battery is electrically connected to the circuit board, and the circuit board is electrically connected to the wireless charging module. A battery cover is installed at the top of the lithium battery in the upper housing, and a wireless charging coil is installed on the top of the battery cover. The wireless charging coil is circuit-connected to the wireless charging module;

[0009] A switch is installed on the lower housing. The switch is electrically connected to the circuit board. Two unidirectional microphones are installed on the lower housing. The unidirectional microphones are electrically connected to the circuit board;

[0010] A silicon microphone is installed on the upper side inside the H-shaped base. The silicon microphone is electrically connected to the circuit board. A perforated strong magnet is installed on the lower side inside the H-shaped base. The H-shaped base is provided with a sound transmission hole.

[0011] Further defined, the lower housing is provided with an observation window. With such a design, the state of the internal components can be observed.

[0012] Further defined, the observation window is internally provided with red and green light-emitting diodes. With such a design, the red light-emitting diode displays the battery power status of the sensor. When the battery is fully charged, the red light is turned off. When the battery power is insufficient, the red light flashes intermittently to give an alarm, reminding the user to charge.

[0013] Further defined, the two unidirectional microphones are symmetrically distributed on the lower housing. With such a design, the environmental noise signals can be received evenly to the maximum extent to offset the influence of environmental noise on the sound signals of the device itself.

[0014] Further defined, the contact surface of the H-shaped base is an oblique angle. With such a design, it is beneficial for the sound to enter.

[0015] Advantages of adopting the present utility model:

[0016] The present utility model can wirelessly transmit the collected sound signals by using the StarFlash technology. It has a built-in battery, a wireless charging module and a wireless charging coil, which solves the problem of the working energy source of the sensor. There is no need for signal lines and power lines, and it can monitor the early faults of mechanical equipment and can be used for predictive maintenance;

[0017] The present utility model forms a microphone array by opening a sound transmission hole at the bottom of the magnetic suction base and two unidirectional microphones symmetrically distributed on the lower housing, so that the target object for the sound sensor to monitor the sound is clear; at the same time, it is directly installed by magnetic suction, the overall structure is small and compact, and it communicates by means of the StarFlash SLE technology, can wirelessly transmit the signal, has good monitoring effect and high practicability.

[0018] The utility model utilizes beamforming technology to offset the influence of on-site environmental noise and obtain effective sound data. Description of the Drawings

[0019] The utility model can be further illustrated by the non-limiting embodiments given in the drawings;

[0020] Figure 1 It is a schematic structural diagram of an embodiment of a wireless acoustic signal sensor based on the SparkLink SLE technology of the utility model;

[0021] Figure 2 It is a partial structural schematic diagram of an embodiment of a wireless acoustic signal sensor based on the SparkLink SLE technology of the utility model;

[0022] Figure 3 is Figure 2 explosion structural schematic diagram;

[0023] The main element symbols are explained as follows:

[0024] Housing 1; Lower housing 2; H-shaped base 3; Upper housing 4; Lithium battery 5; Circuit board 6; Wireless charging module 7; Battery cover 8; Wireless charging coil 9; Switch 10; Unidirectional microphone 11; Silicon microphone 12; Holed strong magnet 13; Sound transmission hole 14; Observation window 15. Detailed Embodiment

[0025] In order to enable those skilled in the art to better understand the utility model, the technical solution of the utility model will be further described below with reference to the drawings and embodiments.

[0026] As Figure 1 , Figure 2 , Figure 3 shown, a wireless acoustic signal sensor based on the SparkLink SLE technology of the utility model includes a housing 1, the housing 1 is threadedly connected with a lower housing 2, the lower housing 2 is threadedly connected with an H-shaped base 3, an upper housing 4 is installed between the lower housing 2 and the housing 1, and the upper housing 4 is located inside the housing 1;

[0027] A lithium battery 5 is installed inside the upper housing 4, a circuit board 6 and a wireless charging module 7 are installed on the side of the lithium battery 5 in the upper housing 4. The circuit board 6 includes a microprocessor, a feature signal extraction module, a storage unit, a SparkLink SLE transparent transmission module and an indicator light. The lithium battery 5 is electrically connected to the circuit board 6, the circuit board 6 is electrically connected to the wireless charging module 7, a battery cover 8 is installed on the top of the lithium battery 5 in the upper housing 4, a wireless charging coil 9 is installed on the top of the battery cover 8, and the wireless charging coil 9 is circuit-connected to the wireless charging module 7;

[0028] The lower housing 2 is installed with a switch 10, the switch 10 is electrically connected to the circuit board 6, the lower housing 2 is installed with two unidirectional microphones 11, and the unidirectional microphones 11 are electrically connected to the circuit board 6;

[0029] Inside the upper side of the H-shaped base 3, a silicon microphone 12 is installed, the silicon microphone 12 is electrically connected to the circuit board 6, inside the lower side of the H-shaped base 3, a perforated strong magnet 13 is installed, and the H-shaped base 3 is provided with a sound transmission hole 14.

[0030] In this embodiment, when using a wireless acoustic signal sensor based on the SparkLink SLE technology, the device is directly installed in the use area in a magnetic adsorption manner. Under the effect of the perforated strong magnet 13, it can be conveniently and quickly installed on metal equipment;

[0031] Sound passes through the sound transmission hole 14 and is transmitted to the silicon microphone 12, and is collected by the silicon microphone 12;

[0032] Furthermore, with the assistance of the two unidirectional microphones 11, while strengthening the reception of environmental noise signals, it can cancel the influence of environmental noise on the sound signals of the device itself; affected by the installation direction of the two unidirectional microphones 11, the unidirectional microphones symmetrically distributed on both sides have obvious directivity. For the same sound source, there will be a large difference in the signal time and signal amplitude collected by the bottom silicon microphone 12 and the two unidirectional microphones 11 on both sides. Because the overall volume of the sensor is small and the installation position is close to the sound source, in beamforming, the delay time can be ignored.

[0033] The sound signal collected by the silicon microphone 12, through the feature signal extraction module, filters out environmental noise and surrounding machine noise, extracts the feature quantity of the sound signal of this device, and sends it to the microprocessor. The microprocessor performs data acquisition, operation and storage in the storage unit according to the program. At the same time, the microprocessor transmits the sound signal through the SparkLink SLE module according to the set rules, and the indicator light indicates the working state of the sensor at the same time. The setting of the switch 10 controls the opening and closing of the entire sensor;

[0034] Furthermore, the cooperation of the wireless charging module 7 and the wireless charging coil 9 realizes the purpose of wireless charging, solves the problem of inability to charge due to insufficient power cord length, and enhances the adaptability.

[0035] Preferably, the lower housing 2 is provided with an observation window 15. Such a design can observe the state of the internal components. In fact, the position and specification size of the observation window 15 can also be considered according to specific situations.

[0036] Preferably, the observation window 15 is built-in with red and green light-emitting diodes. With such a design, the red light-emitting diode indicates the battery power status of the sensor. When the battery is fully charged, the red light is turned off. When the battery power is insufficient, the red light blinks intermittently to give an alarm, reminding the user to charge the battery. In fact, the status indication measures can also be considered according to specific circumstances.

[0037] Preferably, two unidirectional microphones 11 are symmetrically distributed on the lower housing 2. With such a design, the ambient noise signals can be received evenly to the maximum extent, so as to offset the influence of ambient noise on the sound signals of the device itself. In fact, the positional relationship of the unidirectional microphones 11 can also be considered according to specific circumstances.

[0038] Preferably, the contact surface of the H-shaped base 3 is an oblique angle. With such a design, it is beneficial for the sound to enter. In fact, the size of the oblique angle can also be considered according to specific circumstances.

[0039] The above embodiments only exemplarily illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A wireless acoustic signal sensor based on Star Flash SLE technology, comprising a housing (1), characterized in that: The outer shell (1) is threadedly connected to a lower shell (2), the lower shell (2) is threadedly connected to an H-shaped base (3), an upper shell (4) is installed between the lower shell (2) and the outer shell (1), and the upper shell (4) is located inside the outer shell (1); A lithium battery (5) is installed inside the upper shell (4); a circuit board (6) and a wireless charging module (7) are installed on the side of the lithium battery (5) of the upper shell (4); the circuit board (6) comprises a microprocessor, a characteristic signal extraction module, a storage unit, a Star Flash SLE transparent transmission module and an indicator light; the lithium battery (5) and the circuit board (6) are electrically connected; the circuit board (6) and the wireless charging module (7) are electrically connected; a battery cover (8) is installed on the top of the lithium battery (5) of the upper shell (4); a wireless charging coil (9) is installed on the top of the battery cover (8); and the wireless charging coil (9) is connected to the circuit of the wireless charging module (7); The lower housing (2) is equipped with a switch (10), the switch (10) is electrically connected to the circuit board (6), and the lower housing (2) is equipped with two unidirectional microphones (11), the unidirectional microphones (11) are electrically connected to the circuit board (6); A silicon chip microphone (12) is installed on the upper side of the H-shaped base (3), and the silicon chip microphone (12) is electrically connected to the circuit board (6). A strong magnet with a hole (13) is installed on the lower side of the H-shaped base (3), and the H-shaped base (3) is provided with a sound-transmitting hole (14).

2. The wireless acoustic signal sensor based on Star Flash SLE technology according to claim 1 is characterized in that: The lower housing (2) is provided with an observation window (15).

3. The wireless acoustic signal sensor based on Star Flash SLE technology according to claim 2 is characterized in that: The observation window (15) has built-in red and green light emitting diodes.

4. The wireless acoustic signal sensor based on Star Flash SLE technology according to claim 1 is characterized in that: The two unidirectional microphones (11) are symmetrically distributed on the lower housing (2).

5. The wireless acoustic signal sensor based on Star Flash SLE technology according to claim 1 is characterized in that: The contact surface of the H-shaped base (3) is an oblique angle.

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