CN214151956U

CN214151956U - Voice alarm circuit structure of television transmitter

Info

Publication number: CN214151956U
Application number: CN202023029081.8U
Authority: CN
Inventors: 宿明洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-09-07
Anticipated expiration: 2030-12-16

Abstract

The utility model provides a television transmitter audio alert circuit structure, including power, driver, shut switch, along separate routes detection device and audible-visual annunciator, the driver passes through the shut switch and connects detection device along separate routes, and detection device along separate routes connects audible-visual annunciator along separate routes, and shut switch and detection device along separate routes are a plurality of respectively, and detection device break-make along separate routes of every shut switch individual control. Therefore, fault information is loaded through the driver, and the branch detection devices respectively output alarm signals to timely send fault prompts to workers.

Description

Voice alarm circuit structure of television transmitter

Technical Field

The utility model belongs to the technical field of the broadcast television, a device maintenance field is related to, concretely relates to television transmitter audio alert circuit structure.

Background

In the existing broadcast television technology, the HARRIS all-solid-state television transmitter is a common model. Typically, the failure of a HARRIS television transmitter includes seven of: the system comprises a power amplifier module fault, a standing-wave ratio fault, a power amplifier power supply fault, an exciter fault, a standing-wave ratio feedback fault, a too low air pressure fault and a door opening fault. Some of the faults can cause the transmitter to be shut down, and some faults can be discovered only when an attendant patrols the transmitter and only alarms but cannot shut down. For example, a power amplifier module fault, a standing-wave ratio fault and the like, once the power amplifier module fault and the standing-wave ratio fault occur, the transmitter sends out an alarm signal without shutdown. If the fault occurs in the neutral gear of the two-time machine patrol of the operator on duty, the fault is not found in time, and the transmitter always operates in the fault state. The consequence of this situation is that, as time goes on, the fault part is gradually enlarged, the number of damaged components is increased, which causes great economic loss, and meanwhile, hidden danger is brought to safe and high-quality broadcasting.

In view of the above, there is a need for a voice alarm circuit structure capable of giving an alarm in time when a television transmitter fails.

SUMMERY OF THE UTILITY MODEL

The utility model provides a television transmitter audio alert circuit structure, including power, driver, shut switch, shut detection device and audible-visual annunciator, the driver passes through the shut switch and connects shut detection device, the audible-visual annunciator is connected to the shut detection device, shut switch and shut detection device are a plurality of respectively, and a shut detection device break-make of every shut switch independent control.

Preferably, the shunt detection device comprises a photoelectric coupler, a triode and a relay, wherein the photoelectric coupler is connected with the triode in series, the triode is connected with the relay in series, and the triode drives the relay.

Preferably, the photoelectric coupler adopts an independent four-pin device, and the model is CLC 521.

Preferably, the relay is a 12-volt small sealed relay with two groups of contacts.

Preferably, the triode is in a 3DG121C model.

Preferably, the audible and visual alarm comprises a voice alarm and a plurality of alarm lamps, and each alarm lamp corresponds to one branch detection device.

Preferably, the voice alarm is internally provided with an audio amplifier.

Preferably, the driver takes electricity from a 5-volt direct-current power supply, and the audible and visual alarm takes electricity from a 12-volt direct-current power supply.

The utility model provides a television transmitter audio alert circuit structure, including power, driver, shut switch, along separate routes detection device and audible-visual annunciator, the driver passes through the shut switch and connects along separate routes detection device, and along separate routes detection device connects audible-visual annunciator, and shut switch and along separate routes detection device are a plurality of respectively, and a detection device break-make along separate routes of every shut switch independent control. Therefore, fault information is loaded through the driver, and the branch detection devices respectively output alarm signals to timely send fault prompts to workers.

Other features and advantages of the present application will become more apparent from the following detailed description of the embodiments of the present application, which is provided in connection with the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram of a voice alarm circuit of a television transmitter according to a preferred embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a shunt detection device according to a preferred embodiment of the present invention.

Detailed Description

As shown in fig. 1, the voice alarm circuit structure of the television transmitter provided by this embodiment includes a power supply DC, a driver J1, 7 shunt switches: a shunt switch K1, a shunt switch K2, a shunt switch K3, a shunt switch K4, a shunt switch K5, a shunt switch K6, and a shunt switch K7, respectively, 7 shunt detection devices: a branch detection device M1, a branch detection device M2, a branch detection device M3, a branch detection device M4, a branch detection device M5, a branch detection device M6, a branch detection device M7, and an audible and visual alarm J2, respectively. The driver J1 is connected with 7 branch detection devices through 7 branch switches respectively, the 7 branch detection devices are connected with the audible and visual alarm J2, and each branch switch controls the on-off of one branch detection device independently.

In addition, driver J1 draws power from a 5 volt DC power supply, and audible and visual alarm J2 draws power from a 12 volt DC power supply. In this embodiment, audible and visual alarm J2 includes audio alert ware and alarm lamp, and the alarm lamp is a plurality of, and every alarm lamp corresponds a branching detection device, and audio amplifier is built-in to audio alert ware simultaneously, provides the pronunciation broadcast of reporting an emergency and asking for help or increased vigilance, and when single branching detection device exported alarm signal to corresponding alarm lamp, this alarm lamp flashing light, audio alert ware sent the warning suggestion in corresponding branching according to the branching detection device that corresponds simultaneously, and wherein the audio alert suggestion in every branching is different.

Specifically, the internal structures of the 7 shunt detection devices are the same, please refer to fig. 2, each shunt detection device includes a photoelectric coupler U, a triode B and a relay D, the photoelectric coupler U is connected in series with the triode B, the triode B is connected in series with the relay D, and the triode B drives the relay D. The shunt detection device is connected with a driver J1 from a position I, in the operation process, once the transmitter breaks down, a contact D of the relay is attracted to trigger an alarm signal, and the generated alarm signal is output to an audible and visual alarm J2 from a position A. In this embodiment, the working current of the selected photocoupler U is only 5mA, and the working voltage follows 5V of the driver J1. The design has the advantages that the power supply of the original circuit can be utilized, and the original circuit cannot be influenced.

Herein, the photoelectric coupler U adopts an independent four-pin device, and the model is CLC521, and has the advantages of good stability and easy replacement. The relay D selects a 12-volt small-sized sealing relay with two groups of contacts, one group of contacts is connected with the voice alarm, and the other group of contacts is connected with the alarm lamp. The triode B is of a 3DG121C model.

To sum up, through the utility model discloses preferred embodiment provides a television transmitter audio alert circuit structure, included power, driver, shunt switch, detection device and audible-visual annunciator along separate routes, the driver passes through shunt switch and connects detection device along separate routes, and detection device along separate routes connects audible-visual annunciator along separate routes. Each branch detection device comprises a photoelectric coupler, a triode and a relay, and in the operation process, once the transmitter breaks down, the relay contacts are attracted to trigger an alarm signal, and the generated alarm signal is output to a sound-light alarm to give an alarm. The circuit structure outputs alarm prompts in different categories on the premise of not changing the physical structure and the electrical parameters of the original circuit, and timely fault removal is guaranteed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The voice alarm circuit structure of the television transmitter is characterized by comprising a power supply, a driver, a shunt switch, a shunt detection device and an acousto-optic alarm, wherein the driver is connected with the shunt detection device through the shunt switch, the shunt detection device is connected with the acousto-optic alarm, the shunt switch and the shunt detection device are respectively multiple, and each shunt switch independently controls the on-off of one shunt detection device.

2. The television transmitter audio alert circuit structure of claim 1, wherein the shunt detection means includes a photo coupler, a transistor, and a relay, the photo coupler is connected in series with the transistor, the transistor is connected in series with the relay, and the transistor drives the relay.

3. The television transmitter audio alert circuit configuration of claim 2, wherein said opto-coupler is a stand-alone four-pin device, model CLC 521.

4. The television transmitter audio alert circuit configuration of claim 2, wherein said relay is a 12 volt miniature sealed relay with two sets of contacts.

5. The television transmitter audio alert circuit structure of claim 2, wherein said triode is of 3DG121C type.

6. The audio alarm circuit structure of claim 1, wherein said audible and visual alarm comprises an audio alarm and a plurality of alarm lamps, and each alarm lamp corresponds to a branch detection device.

7. The television transmitter audio alert circuit structure of claim 6, wherein said audio alert is built in with an audio amplifier.

8. The television transmitter audio alert circuit configuration of claim 1, wherein said driver draws power from a 5 volt dc power supply and said audible and visual alarm draws power from a 12 volt dc power supply.