Abstract: The invention relates to the field of aluminum wheel casting molds, and more particularly relates to a closed-loop control method and system for a mold temperature in a wheel casting process. The control method includes: step 1, acquiring data, that is, acquiring a plurality of mold position temperatures, and cooling pipeline opening and closing signals in a target wheel casting process according to a fixed frequency; step 2, storing, based on acquired mold opening and closing signals of casting equipment, the acquired data in a database in the form of a unique ID according to a single wheel casting process; step 3, calculating new process parameters based on the acquired plurality of position temperatures and time; and step 4, integrating the calculated process parameters, and issuing the process parameters to a PLC of a casting equipment to perform new casting.

Abstract: The present application relates to the field of audio technology, and provides a method, a device, and an apparatus for playing audio, and a computer-readable storage medium. The method for playing audio includes: obtaining an ambient atmospheric pressure value and audio data to be played; obtaining multiple target frequency points contained in the audio data to be played when the ambient atmospheric pressure value meets a preset condition, and determining equal-loudness multiples corresponding to the target frequency points according to the ambient atmospheric pressure value and a preset calibration atmospheric pressure value; and sending the audio data to be played and the equal-loudness multiples of the target frequency points to a power amplifying module, such that the power amplifying module amplifies the audio data to be played according to the equal-loudness multiples corresponding to the target frequency points.

Abstract: The present application relates to the field of audio technology, and provides a method, a device, and an apparatus for playing audio, and a computer-readable storage medium. The method for playing audio includes: obtaining an ambient atmospheric pressure value and audio data to be played; obtaining multiple target frequency points contained in the audio data to be played when the ambient atmospheric pressure value meets a preset condition, and determining equal-loudness multiples corresponding to the target frequency points according to the ambient atmospheric pressure value and a preset calibration atmospheric pressure value; and sending the audio data to be played and the equal-loudness multiples of the target frequency points to a power amplifying module, such that the power amplifying module amplifies the audio data to be played according to the equal-loudness multiples corresponding to the target frequency points.

Abstract: The present application discloses a headset, the headset includes a headband; and two earphones respectively connected to two ends of the headband and including: an earphone housing connected to an end of the headband; an earmuff provided therein with a sounder; and a universal adjuster connected between the earphone housing and the earmuff and configured to arbitrarily adjust the earmuff relative to the earphone housing. The headset improves the fit of the earmuffs and the human ears, and improves the comfort when wearing.

Abstract: A keyless control device is provided, wherein the first infrared sensor module generates an infrared trigger signal when the earphone is in a wearing state; the Bluetooth controller generates enable signals according to the infrared trigger signal, and the left-ear infrared sensor module generates a first detection signal according to a first enable signal; the right-ear infrared sensor module generates a second detection signal according to the second enable signal; the left-ear acceleration sensor module generates a third detection signal according to the third enable signal when detecting that the left-ear component is knocked; the right-ear acceleration sensor module generates a fourth detection signal according to the fourth enable signal when detecting that the right-ear component is knocked; and finally, the Bluetooth controller performs the functions according to the detection signals.

Abstract: The present application discloses a headset, the headset includes a headband; and two earphones respectively connected to two ends of the headband and including: an earphone housing connected to an end of the headband; an earmuff provided therein with a sounder; and a universal adjuster connected between the earphone housing and the earmuff and configured to arbitrarily adjust the earmuff relative to the earphone housing. The headset improves the fit of the earmuffs and the human ears, and improves the comfort when wearing.

Abstract: An earphone including an audio play portion, a body where a printed circuit board, a plug, and a socket are installed, and a connecting wire. The plug, the socket, and the connecting wire are in electrical connection with the printed circuit board. The plug is configured to be adapted to a lightning interface integrated with an audio output and a power input, and the audio play portion and the socket are in electrical connection with the plug and capable of work simultaneously and being respectively configured to play music and charge when the plug is inserted into the lightning interface. The earphone utilizes the plug to be adapted to the lightning interface integrated with the audio output and the power input.

Abstract: A Bluetooth sport earphone, including a left earphone and a right earphone and a controller. The controller comprises a casing, a main control circuit board, a battery and a Bluetooth module, the Bluetooth earphone further includes a left wire, a right wire and a cable antenna electrically connected to the main control circuit board; the cable antenna is mounted on at least one of the casing, the left wire and the right wire. The present application provides a cable antenna, and the cable antenna is mounted in the casing, or/and the left wire, or/and the right wire, which can facilitate the arrangement of the cable antenna and determine the size, length and arrangement position of the antenna, such that the stability and intensity of the signal transmitting is improved, and the signal intensity of the wireless communication of the Bluetooth earphone is improved, and the communication stability is ensured.

Abstract: A hearing protection method, an apparatus and a system are provided. the start command input by the user is received by the hearing protection apparatus to activate the hearing protection mode; the sound data in multiple dimensions is collected and whether the sound data in any of the dimensions is within a corresponding preset threshold is determined; and corresponding prompt information is sent when the sound data in any of the dimensions exceeds the corresponding preset threshold Thus, various prompting manners are provided to remind the user to make corresponding adjustments, thereby achieving the purpose of hearing protection, and effectively adapting to the needs of specific users.

Abstract: A Bluetooth sport earphone, including a left earphone and a right earphone and a controller. The controller comprises a casing, a main control circuit board, a battery and a Bluetooth module, the Bluetooth earphone further includes a left wire, a right wire and a cable antenna electrically connected to the main control circuit board; the cable antenna is mounted on at least one of the casing, the left wire and the right wire. The present application provides a cable antenna, and the cable antenna is mounted in the casing, or/and the left wire, or/and the right wire, which can facilitate the arrangement of the cable antenna and determine the size, length and arrangement position of the antenna, such that the stability and intensity of the signal transmitting is improved, and the signal intensity of the wireless communication of the Bluetooth earphone is improved, and the communication stability is ensured.

Abstract: A hearing protection method, an apparatus and a system are provided. the start command input by the user is received by the hearing protection apparatus to activate the hearing protection mode; the sound data in multiple dimensions is collected and whether the sound data in any of the dimensions is within a corresponding preset threshold is determined; and corresponding prompt information is sent when the sound data in any of the dimensions exceeds the corresponding preset threshold Thus, various prompting manners are provided to remind the user to make corresponding adjustments, thereby achieving the purpose of hearing protection, and effectively adapting to the needs of specific users.

Abstract: An earphone including an audio play portion (30), a body (12) where a printed circuit board (14), a plug (15), and a socket (16) are installed, and a connecting wire (40). The plug (15), the socket (16), and the connecting wire (40) are in electrical connection with the printed circuit board (14). The plug (15) is configured to be adapted to a lightning interface (22) integrated with an audio output and a power input, and the audio play portion (30) and the socket (16) are in electrical connection with the plug (15) and capable of work simultaneously and being respectively configured to play music and charge when the plug (15) is inserted into the lightning interface (22). The earphone utilizes the plug (15) to be adapted to the lightning interface (22) integrated with the audio output and the power input.