Device for automatically controlling broadcasting of transfer station

Abstract

The utility model discloses a device for automatically controlling broadcasting of a transfer station. According to the utility model, a logic control circuit is connected with a power signal detection circuit, a power signal switching circuit and a communication circuit; the power signal detection circuit is connected with the power signal input interface, and the power signal switching circuit is connected with the power signal output interface; the power signal detection circuit is connected with the power signal switching circuit. According to the utility model, the problem that the interface negotiations of two lines of different broadcast manufacturers are inconsistent in the prior art, so that the normal butt joint cannot be realized is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of broadcast control, in particular to a device for automatically controlling the broadcast of a transfer station. Background Art

[0002] With the gradual development and improvement of the rail transit broadcast system along with the construction of rail transit, in the development of rail transit in large and medium-sized cities, it has gradually changed from several subway lines operating without physical intersection to a large transportation hub forming a comprehensive area complex. This has led to the situation where several subway lines share a common station at the same location, forming the concept of a transfer station. A relatively small transfer station may be a transfer station for two or three lines, and a relatively large one may cover a comprehensive transportation hub composed of multiple transportation platforms such as railways, subways, light rails, airplanes, and buses.

[0003] The broadcast system plays a role of voice guidance in the above situations, that is, playing voices in key passenger flow gathering areas during transfer to guide passengers for passenger flow evacuation. Therefore, the role of the broadcast system in the transfer station is undeniable, which also poses quite a challenge to the coordination of the broadcast system in the transfer station.

[0004] If the broadcast systems of two intersecting subway lines in the transfer station are products of the same broadcast brand, there will be no problem with the interconnection and intercontrol of the transfer station. However, if the broadcast brands of the two lines are different and the communication protocols of the transformed line broadcast suppliers are missing, corresponding interface communication problems will arise.

[0005] The broadcast system manufacturers of each line in the transfer station can negotiate interface protocols to ensure the integrity of their own systems. Through interface communication at the software level, the problem of the interconnection and intercommunication of the broadcast systems in all the above situations in the transfer station can be completely solved. Currently, the content of the interface protocol of the transfer station broadcast system has also become increasingly mature with the development of the domestic subway industry. The more commonly used interface protocol content is to use the method of "RS422 + two-way audio" to achieve the interconnection and intercontrol of the required areas in the transfer station.

[0006] Although the above interface communication method has been used in China for many years and the protocol content and interface method are very mature, there is currently a situation where the negotiation of the interest distribution between the two interfaces is inconsistent, resulting in the transfer station being unable to be docked according to the above method. Therefore, the above solution is a general solution, which is without any problem at the technical level, but there are human factors, that is, the broadcast manufacturers of the two lines in the transfer station cannot be normally docked due to inconsistent negotiation of interface fees.

[0007] In the related art, the technical problem that the interface negotiation between different broadcast manufacturers of two lines is inconsistent, resulting in the inability to be normally docked, has not been effectively solved. Summary of the Invention

[0008] The object of the present utility model is to provide a device for automatically controlling the broadcast in a transfer station, so as to solve the problem in the related art that the interface negotiation of different broadcast manufacturers for two lines is inconsistent, resulting in the inability to be normally docked.

[0009] In order to achieve the above object, the present utility model adopts the following technical solutions:

[0010] A device for automatically controlling the broadcast in a transfer station includes a logic control circuit connected to a power signal detection circuit, a power signal switching circuit, and a communication circuit; the power signal detection circuit is connected to a power signal input interface, the power signal switching circuit is connected to a power signal output interface; the power signal detection circuit is connected to the power signal switching circuit.

[0011] It is further provided that: a power supply circuit, and the power supply circuit is connected to the power signal detection circuit, the power signal switching circuit, the communication circuit, and the logic control circuit.

[0012] It is further provided that: between the power signal input interface and the logic control gate circuit, they are connected through two signal transmission circuits.

[0013] It is further provided that: the signal transmission circuit includes a step-down resistor, a capacitor, and an inductor, and the capacitor is between the step-down resistor and the inductor; the signal transmission circuit includes two branch circuits.

[0014] It is further provided that: the step-down resistor includes a first resistor, a second resistor, and a third resistor, and the first resistor and the second resistor are respectively connected in series on two branch circuits; the third resistor is connected in parallel between the two branch circuits of a group of signal transmission circuits.

[0015] It is further provided that: the capacitor is connected in parallel between the two branch circuits of a group of signal transmission circuits.

[0016] It is further provided that: one branch circuit is connected from the inductor to the signal ground; on the other branch circuit, a signal regulator and a signal rectifier are connected between the inductor and the logic control circuit.

[0017] It is further provided that: the signal regulator is connected between the inductor and the signal rectifier.

[0018] It is further provided that: the branch circuit is connected to the power signal switching circuit between the step-down resistor and the power signal access interface.

[0019] The utility model identifies the signal of the broadcast audio through a power signal detection circuit, transmits the identified signal state to a logic control circuit, and the logic control circuit quickly switches the output signal. The output signal plays the audio through a broadcast device. It solves the technical problem that the interface negotiation of different broadcast manufacturers on two different lines at the transfer station is inconsistent, resulting in the inability to normally dock the broadcast content. It achieves the technical effect of overall controlling the broadcast signals of multiple input interfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is the schematic diagram of the present utility model;

[0022] Figure 2 is the circuit schematic diagram of the logic control circuit and the power signal input interface;

[0023] Figure 3 is the logic diagram of the present utility model;

[0024] Figure 4 is the logic diagram of controlling two different broadcast devices in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions of the present utility model with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Embodiment

[0029] Refer to Figure 1 - Figure 2 , a device for automatically controlling the broadcast of a transfer station disclosed in the present utility model, the utility model comprising: a logic control circuit connected to a power signal detection circuit, a power signal switching circuit, and a communication circuit; the power signal detection circuit connected to a power signal input interface, the power signal switching circuit connected to a power signal output interface; the communication circuit feeding back the output state of the logic control circuit to the main control. The power signal input interface is an input interface for the broadcast signal to be detected. The power signal output interface is an output interface for the selected broadcast signal.

[0030] The power signal detection circuit is used to detect the power signal to identify the broadcast audio signal and output the status to the logic control circuit. The detection range is 10VRMS to 100VRMS, and the detection time < 300μs. The logic control circuit is used to receive the broadcast status output by the power signal detection circuit and control the power signal switching circuit through priority. The power signal detection circuit is connected to the power signal switching circuit. The power signal switching circuit receives the output control signal of the logic control circuit and switches quickly. The switching time < 5ms.

[0031] Specifically, the power signal detection circuit is connected to the power signal input interface and is used to detect the input broadcast signal. This can ensure the accuracy and reliability of the input signal. By analyzing and judging the detected signal through the logic control circuit, signals that meet the requirements can be screened out for subsequent processing. The power signal switching circuit is connected to the power signal output interface and, according to the control signal of the logic control circuit, selects and switches to a specific broadcast signal for output. This method allows the system to select one or more from multiple input signals for output, improving the flexibility and adaptability of the system. The communication circuit is responsible for transmitting the output state of the logic control circuit back to the main control system. This enables the main control system to understand in real time key information such as the working state of the logic control circuit, the results of signal detection and switching, etc. The feedback mechanism helps the main control system to remotely monitor, manage, and control the system, improving the maintainability and manageability of the system. By precisely detecting, screening, and switching the power signal through the logic control circuit, it can be ensured that the system only outputs broadcast signals that meet the requirements, avoiding unnecessary energy loss and signal interference. At the same time, the real-time feedback mechanism provided by the communication circuit helps the main control system to optimize and adjust the system according to the actual situation, further improving the overall performance and efficiency of the system.

[0032] Furthermore: a power supply circuit, the power supply circuit is connected to the power signal detection circuit, the power signal switching circuit, the communication circuit, and the logic control circuit. The power supply circuit provides power for the power signal detection circuit, the power signal switching circuit, the logic control circuit, and the communication circuit.

[0033] Specifically, the power supply circuit is the core of the entire system and is responsible for providing the required electrical energy for other circuits. It ensures the normal operation of other circuits by converting, distributing, and stabilizing electrical energy. The power supply circuit usually needs to have characteristics such as stable output, high efficiency, and low noise to ensure high-quality electrical energy is provided for other circuits. According to different application scenarios, the power supply circuit may also need to have safety functions such as overcurrent protection, overvoltage protection, and overheat protection. Generally speaking, the power supply circuit plays a crucial role in the system. By providing a stable and reliable power supply for the power signal detection circuit, the power signal switching circuit, the communication circuit, and the logic control circuit, it ensures the normal operation of the entire system.

[0034] Furthermore: The power signal input interface and the logic control gate circuit are connected through two groups of signal transmission circuits. The signal transmission circuit includes a step-down resistor, a capacitor, and an inductor, and the capacitor is between the step-down resistor and the inductor; the signal transmission circuit includes two branch circuits. The step-down resistor includes a first resistor, a second resistor, and a third resistor. The first resistor and the second resistor are respectively connected in series on the two branch circuits; the third resistor is connected in parallel between the two branch circuits of a group of signal transmission circuits. The capacitor is connected in parallel between the two branch circuits of a group of signal transmission circuits.

[0035] Specifically, the power signal input interface inputs two different power signals, A and B, detects whether the power signals on lines A and B exist, and sends this signal to the logic control circuit. The first resistor, the second resistor, and the third resistor step down the 100V analog audio; the capacitor filters the analog audio; the signal regulator adjusts the analog signal; the signal rectifier rectifies the analog signal.

[0036] The logic control circuit detects the rectified DC signal, determines whether there is a power signal input on lines A and B, makes a judgment according to the preset priority and selects the power signal of line A or the power signal of line B, and then outputs the control signal to the power signal switching circuit. After receiving the signal from the logic control circuit, the power signal switching circuit outputs one of the power signals of lines A and B to the power signal output interface after a 1-out-of-2 selection.

[0037] Further: one branch circuit is connected from the inductor to the signal ground; another branch circuit is connected with a signal regulator and a signal rectifier between the inductor and the logic control circuit.

[0038] Further: the signal regulator is connected between the inductor and the signal rectifier. The branch circuit is connected to the power signal switching circuit between the step-down resistor and the power signal access interface.

[0039] Referring to Figure 3 , Figure 3 , which is the logic diagram of the present invention. When it is detected that there is a power signal input on line A or line B, the input of the power signal of line A or the input of the power signal of line B is converted into an audio output through logical control judgment.

[0040] Referring to Figure 4 , Figure 4 , which is a schematic diagram of controlling two different broadcast devices in the present invention. Generally, the A-line broadcast device inputs the power signal of line A, and the B-line broadcast device inputs the power signal of line B. Through the present invention, the selected signal is output to the speaker, achieving the technical effect of normal docking of different broadcast input devices at the transfer station.

[0041] The working principle and beneficial effects of the present invention are as follows:

[0042] The present invention identifies the signal of the broadcast audio through the power signal detection circuit, transmits the identified signal state to the logic control circuit, and the logic control circuit quickly switches the output signal. The output signal plays the audio through the broadcast device. It solves the technical problem that the interface negotiation of different broadcast manufacturers on two different lines at the transfer station is inconsistent, resulting in the inability to normally dock the broadcast content. It achieves the technical effect of overall controlling the broadcast signals of multiple input interfaces.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An apparatus for automatically controlling the broadcast in a transfer station, characterized in that, Comprising: The logic control circuit is connected to the power signal detection circuit, the power signal switching circuit, and the communication circuit; The power signal detection circuit is connected to the power signal input interface, and the power signal switching circuit is connected to the power signal output interface; The power signal detection circuit is connected to the power signal switching circuit.

2. The automatic control device for transfer station broadcasts according to claim 1, characterized in that, Comprising: A power supply circuit, and the power supply circuit is connected to the power signal detection circuit, the power signal switching circuit, the communication circuit, and the logic control circuit.

3. The automatic control device for the transfer station broadcast according to claim 1, characterized in that Comprising: Between the power signal input interface and the logic control circuit are connected through two signal transmission circuits.

4. The automatic control device for transfer station broadcasts according to claim 3, wherein Comprising: The signal transmission circuit includes a step-down resistor, a capacitor, and an inductor, and the capacitor is between the step-down resistor and the inductor; The signal transmission circuit includes two sub-circuits.

5. The automatic control device for transfer station broadcasts according to claim 4, characterized in that Comprising: The step-down resistor includes a first resistor, a second resistor, and a third resistor, and the first resistor and the second resistor are respectively connected in series on the two sub-circuits; The third resistor is connected in parallel between the two sub-circuits of a group of the signal transmission circuits.

6. The automatic control device for transfer station broadcasting according to claim 4, wherein, Comprising: The capacitor is connected in parallel between the two sub-circuits of a group of the signal transmission circuits.

7. An apparatus for automatically controlling the broadcast in a transfer station according to claim 4, characterized in that, Comprising: One of the sub-circuits is connected from the inductor to the signal ground; On the other sub-circuit, between the inductor and the logic control circuit, a signal regulator and a signal rectifier are connected.

8. An apparatus for automatically controlling the broadcast in a transfer station according to claim 7, wherein, Comprising: The signal regulator is connected between the inductor and the signal rectifier.

9. The automatic control device for transfer station broadcasting according to claim 4, characterized in that, Comprising: The sub-circuit is connected to the power signal switching circuit between the step-down resistor and the power signal access interface.

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