CN204442485U - A kind of analog signal detection device - Google Patents

Abstract

The utility model discloses an analog signal detection device, which comprises an external joint, a connecting wire and a receiver, and the receiver and the external joint are connected through the connecting wire. Compared with the prior art, the utility model has the advantages of simple operation, fast detection, low cost, small size and practicality.

Description

An analog signal detection device

technical field

The utility model relates to a signal detection device, in particular to an analog signal detection device in electric power communication.

Background technique

In the power telecontrol system, the communication channel is a very important link connecting the main station and the substation RTU. All the data collected by the substation RTU must be uploaded to the master station through the uplink channel for analysis and use by the master station, and the operation commands of the master station to the plant equipment are also sent to the substation RTU through the downlink channel. Therefore, the channel is the nerve connecting the main station and the RTU of the substation. Whether the telecontrol system can operate reliably and stably depends to a large extent on whether the channel is error-free. Communication personnel want to check whether the telecontrol channel is normal. The traditional method can use special equipment, such as electric telecontrol channel tester, but the equipment is expensive, bulky and inconvenient to carry.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a simple and practical detection device, which can quickly detect the analog telecontrol signal, quickly check whether there is a fault in the channel, and improve the analog signal of the communication personnel's work efficiency. detection device.

An analog signal detection device includes an external connector, a connecting wire, and a receiver, and the receiver and the external connector are connected through a connecting wire.

The receiver is an electro-acoustic device used to convert audio electrical signals into sound signals. When in use, insert the external connector into the audio wiring module of the corresponding channel, and connect it between the upper and lower layers of the module. If there is a signal in the channel, That is, a weak current is introduced into the receiver through the connecting wire, and the receiver converts the current into sound. The sound heard by the inspector proves that the analog telecontrol signal has been received, which means that the communication channel is normal.

The connecting wire is a carrier used for conducting electric energy, and is composed of a core wire and an insulating sheath, and the wire diameter ranges suitably from 0.4mm ² to 1.5mm ² .

The external connector is the shell and plug of the communication security unit.

In summary, the utility model has the following advantages compared with the prior art:

1. Simple operation: plug the external connector into the audio wiring module and use it without special training or external power supply.

2. Fast detection: After inserting the wiring module, if there is a weak audio signal, the signal current passes through the connecting wire, and the receiver converts the electrical signal into sound, which proves that the analog telecontrol signal can be received, that is, the channel is normal.

3. Low cost: simple accessories, simple structure, easy production, and low input cost.

4. Small and practical: exquisite appearance, easy to carry, and strong practicability.

Description of drawings

Figure 1 is a schematic structural view of the analog signal detection device of the present invention.

DESCRIPTION OF SYMBOLS 1 External connector 2 Connecting lead 3 Receiver.

Detailed ways

Below in conjunction with embodiment the utility model is described in more detail.

Example 1

An analog signal detection device as shown in FIG. 1 includes three parts: an external connector 1 , a connecting wire 2 , and a receiver 3 . The receiver is an electro-acoustic device used to convert audio electrical signals into sound signals. The connecting wire is a carrier used for conducting electric energy, and is composed of a core wire and an insulating sheath, and the wire diameter ranges suitably from 0.4mm ² to 1.5mm ² . The external connector is the shell and plug of the communication security unit. The specific connection is: using the external connector 1, it is convenient to insert the audio wiring module, strip the insulation sheath at both ends of the connecting wire 2, weld one end on the two metal sheets of the external connector 1, and connect the other end to the two pins of the receiver 3 . When in use, the electrical signal is transmitted to the receiver through the connecting wire. The receiver uses the principle of electromagnetic action of the inductance to convert the electrical signal into sound. When the inspector hears the sound, it means that the analog telecontrol signal can be received and the channel is normal.

The parts not described in this embodiment are the same as the prior art.

Claims (3)

1. an analog signal detection device, is characterized in that: comprise external lug, connect wire, receiver, connects between described receiver and external lug by connecting wire.

2. analog signal detection device according to claim 1, is characterized in that: described connection wire is the carrier that conduct electrical power uses, and be made up of heart yearn and insulated cladding, wire range is suitable for 0.4mm ²~ 1.5mm ².

3. analog signal detection device according to claim 2, is characterized in that: described external lug is shell and the plug of communication Security Unit.