Single-path wireless talkback gateway

Abstract

The utility model discloses a single-path wireless talkback gateway, and aims to provide a single-path wireless talkback gateway which is small in interference, low in cost, low in failure rate and easy to transform and upgrade. The device comprises a power supply module, a 4G communication module and a voice chip. The power supply module supplies power to the 4G communication module and the voice chip, and the 4G communication module is connected with the voice chip; the 4G communication module communicates with a monitoring duty room through a cloud platform, and communicates with an elevator interphone through the voice chip; the 4G communication module is bound and paired with a monitoring duty room by adopting an open technical scheme, then forwards and receives an instruction and audio data issued by the monitoring duty room through the cloud platform, forwards the instruction and audio data to the voice chip for processing, and also can upload data transmitted by the voice chip to the cloud platform and forwards the data to the monitoring duty room. The wireless intercom gateway is applied to the technical field of wireless intercom gateways.

Description

Technical Field

[0001] The utility model relates to an intercom gateway, in particular to a single-channel wireless intercom gateway. Background Art

[0002] With the rapid development of my country's economy and science and technology, the level of wireless communication technology has also been greatly improved. The significant improvement in the quality of wireless communication has led to a gradual shift in communication methods from wired analog to wireless digital methods, thus achieving communication effects with longer transmission distances and stronger anti-interference capabilities.

[0003] While traditional elevator intercoms are durable and suitable for relatively simple environments, they require long wiring runs to connect to a monitoring duty room. This makes them susceptible to interference, resulting in poor communication quality and significant complexity for subsequent upgrades. Furthermore, traditional elevator intercom circuitry is complex, making troubleshooting difficult. Furthermore, the intercom volume cannot be adjusted from the duty room to suit the operating environment. Furthermore, to ensure the reliability of traditional elevator intercoms, regular manual inspections are required, increasing operational costs.

[0004] In summary, traditional elevator intercoms are no longer able to meet the demands of modern digital life. The growing market demand, coupled with the pain points of upgrading and maintaining traditional elevator intercom systems, has shaped the future of the elevator intercom market. Consequently, the market is in urgent need of a wireless intercom gateway that can be used with traditional elevator intercoms, enabling wireless communication with the monitoring and duty room, facilitating future upgrades and maintenance, and reducing operational costs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a single-channel wireless intercom gateway with low interference, low cost, low failure rate and easy modification and upgrading.

[0006] The technical solution adopted by the present invention is as follows: the present invention includes a power supply module, a 4G communication module, and a voice chip; the power supply module supplies power to the 4G communication module and the voice chip, and the 4G communication module and the voice chip are connected; the 4G communication module communicates with the monitoring duty room through the cloud platform, and the 4G communication module communicates with the elevator intercom through the voice chip; the 4G communication module adopts an open technical solution to be bound and paired with the monitoring duty room, and then forwards the instructions and audio data issued by the monitoring duty room through the cloud platform, and forwards them to the voice chip for processing, and can also upload the data transmitted by the voice chip to the cloud platform and forward it to the monitoring duty room.

[0007] Furthermore, the 4G communication module is an EC800 module. To reduce voltage drops, the EC800 module uses a 100uF filter capacitor with low ESR (ESR ≤ 0.7Ω). Three chip-type multilayer ceramic capacitors (MLCCs) with good ESR performance (10uF, 33uF, and 100nF) are also used, and the capacitors are placed close to the VBAT pin. Furthermore, to ensure power supply stability, a TVS diode with VRWM = 4.7V, low clamping voltage, and high peak pulse current Ipp is added to the front end of the power supply.

[0008] Furthermore, the power supply module includes a 12V power input connected to a transient suppression diode, an EMI rectification and filtering circuit composed of two ceramic capacitors and a differential mode inductor, and then an electrolytic capacitor is used to further eliminate ripples, and then the voltage regulator chip is processed.

[0009] Furthermore, the model of the voice chip is D01s BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a system block diagram of the utility model;

[0011] Figure 2 This is the circuit diagram of the 4G communication module;

[0012] Figure 3 This is the circuit diagram of the power supply module; DETAILED DESCRIPTION

[0013] like Figures 1 to 3 As shown, in this embodiment, the utility model includes a power supply module, a 4G communication module, and a voice chip; the power supply module supplies power to the 4G communication module and the voice chip, and the 4G communication module and the voice chip are connected; the 4G communication module communicates with the monitoring duty room through the cloud platform, and the 4G communication module communicates with the elevator intercom through the voice chip; the 4G communication module adopts an open technical solution to bind and pair with the monitoring duty room, and then forwards the instructions and audio data issued by the monitoring duty room through the cloud platform, and forwards it to the voice chip for processing, and can also upload the data transmitted by the voice chip to the cloud platform and forward it to the monitoring duty room.

[0014] In this embodiment, the 4G communication module is an EC800 module, which uses a low-ESR 100uF filter capacitor with ESR ≤ 0.7Ω. At the same time, three chip multilayer ceramic capacitors with good ESR performance are used. The capacitance of the three chip multilayer ceramic capacitors is 10uF, 33uF and 100nF respectively, and the capacitors are placed close to the VBAT pin. In order to ensure power supply stability, a TVS tube with VRWM = 4.7V, low clamping voltage and high peak pulse current Ipp is added to the front end of the power supply.

[0015] In the embodiment, the power supply module comprises a 12V power input connected with a transient suppression diode, an EMI rectification filter circuit formed by two ceramic capacitors and a differential mode inductor, an electrolytic capacitor for further eliminating ripple, and a voltage stabilizing chip.

[0016] In the embodiment, the voice chip is D01s.

[0017] The working principle of the utility model is as follows:

[0018] 1, 12V power input is connected with a transient suppression diode, an EMI rectification filter circuit formed by two ceramic capacitors and a differential mode inductor, an electrolytic capacitor for further eliminating ripple, and a voltage stabilizing chip processing, in order to reduce voltage drop, use low ESR large capacity filter capacitor, and simultaneously use sheet type multilayer ceramic capacitor with good ESR performance.

[0019] 2, 4G communication module adopts open scheme development (i.e. secondary development of firmware, without additional master control chip), can be bound and paired with the monitoring duty room, then through the cloud platform, the instructions and audio data issued by the monitoring duty room are forwarded and received, and are forwarded to the voice chip for processing, and the data transmitted by the voice chip can also be uploaded to the cloud platform and forwarded to the monitoring duty room. And can support DFOTA remote online upgrade.

[0020] 3, the voice chip converts the received intercom analog voice signal into a digital signal, sends it to the 4G communication module after echo cancellation and noise suppression, and decodes the instructions or audio data from the monitoring duty room sent by the 4G communication module, adjusts the volume of the intercom or plays the sound.

[0021] The utility model has the following advantages:

[0022] 1, the utility model discloses a one-way wireless intercom gateway based on open scheme, adopts wireless communication mode, avoids long distance wiring, simplifies subsequent elevator reconstruction upgrade operation, and can greatly reduce interference, and obtains better call experience.

[0023] 2, the product adopts open scheme development, does not need additional master control chip, and the design is simple, and the failure rate is reduced.

[0024] 3, the product can inspect the running state of the intercom according to the inspection instruction of the monitoring duty room, without manual inspection, and reduces the use cost.

[0025] 4, the product can adjust the volume of the intercom through the duty room according to the use environment.

[0026] 5, the product supports remote online upgrade, and reduces the later operation and maintenance cost.

[0027] Although the embodiments of the present application are described in actual schemes, but does not constitute a limitation on the meaning of the present application, for those skilled in the art, according to the modification of the embodiments of the present application and the combination with other schemes are obvious.

Claims

1. A single-channel wireless intercom gateway, characterized by: The single-channel wireless intercom gateway includes a power supply module, a 4G communication module, and a voice chip; the power supply module supplies power to the 4G communication module and the voice chip, and the 4G communication module and the voice chip are connected; the 4G communication module communicates with the monitoring duty room through the cloud platform, and the 4G communication module communicates with the elevator intercom through the voice chip; the 4G communication module is bound and paired with the monitoring duty room, and then forwards the instructions and audio data issued by the monitoring duty room through the cloud platform, and forwards them to the voice chip for processing. The data transmitted by the voice chip can also be uploaded to the cloud platform and forwarded to the monitoring duty room.

2. The single-channel wireless intercom gateway according to claim 1, characterized in that: The 4G communication module is the EC800 module.

3. The single-channel wireless intercom gateway according to claim 1, characterized in that: The EC800 module uses a low-ESR 100uF filter capacitor with an ESR of ≤0.7Ω. It also uses three chip-type multilayer ceramic capacitors with good ESR performance. The capacitances of the three chip-type multilayer ceramic capacitors are 10uF, 33uF, and 100nF, respectively, and the capacitors are placed close to the VBAT pin. To ensure power supply stability, a TVS diode with VRWM = 4.7V, low clamping voltage, and high peak pulse current Ipp is added to the front end of the power supply.

4. The single-channel wireless intercom gateway according to claim 1, characterized in that: The power supply module includes a 12V power input connected to a transient suppression diode, an EMI rectification and filtering circuit composed of two ceramic capacitors and a differential mode inductor, and then an electrolytic capacitor is used to further eliminate ripples, and then the voltage regulator chip is processed.

5. The single-channel wireless intercom gateway according to claim 1, characterized in that: The model of the voice chip is D01s.

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