CN220626424U

CN220626424U - Detection net twine insertion device

Info

Publication number: CN220626424U
Application number: CN202321435339.5U
Authority: CN
Inventors: 李建波
Original assignee: Guangzhou Chuxiu Information Technology Co ltd
Current assignee: Guangzhou Chuxiu Information Technology Co ltd
Priority date: 2023-06-07
Filing date: 2023-06-07
Publication date: 2024-03-19
Anticipated expiration: 2033-06-07

Abstract

The utility model discloses a detection network cable inserting device, which is applied to the technical field of mobile communication, and the detection network cable inserting device is connected to a differential operational amplifier with high impedance input through a C1 capacitor and a C2 capacitor on an RX signal source on a secondary side of a network transformer, detects whether a network is inserted or not by detecting a value (a received network pulse signal) of an output end of a Vout power supply, realizes that a power supply is not required to be added to a network cable, and keeps a signal of an original network cable network clean; the differential operational amplifier is isolated by the C1 capacitor and the C2 capacitor and input with high impedance of the U1 integrated circuit, so that the differential operational amplifier can not interfere an input network signal and can be used for network equipment with the frequency of more than gigabits; meanwhile, as the C1 capacitor and the C2 capacitor can be detected on the secondary side by using common capacitor devices, compared with the patent with the comparison, the patent needs to use a high-voltage power supply to prevent high-voltage pulses generated on the power supply, and is more practical.

Description

Detection net twine insertion device

Technical Field

The utility model belongs to the technical field of mobile communication, and particularly relates to a detection network cable inserting device.

Background

The network port of the monitoring equipment is used as a debugging interface and is in an idle state after the debugging is completed, and the network port functional module is still in a working state so as to increase standby power consumption.

Currently, the publication number is: CN214669533U, discloses a network port insertion detecting device. The network port insertion detection device comprises a first isolation capacitor and a second isolation capacitor which are respectively connected in series between the network port and the network transformer; the public end of the first isolation capacitor and the network interface is connected with a power supply through a pull-up resistor; the public end of the second isolation capacitor and the network interface is connected with the detection switch through the current limiting resistor, and the driving end of the detection switch is connected with the power supply end of the network interface functional module. The utility model has the advantages of no need of adding mechanical devices and additional CPU detection, low realization cost, simple circuit structure and easy realization, and greatly reduces the standby power consumption of the network port functional module.

The above patent can reduce standby power consumption of the network port function module without adding a mechanical device and additional CPU detection, but has obvious defects in physical application.

1: in principle, a power supply is added to a signal line of a network cable, and if the signal source network cable is damaged or short-circuited, the signal source system is easily interfered;

2: when the resistor R1 is short-circuited, network signals can leak to the power supply VCC, so that unstable communication is caused;

3: the capacitance C1 and the capacitance C2 obviously have attenuation effect on signals, and when the communication device is used on a network with the frequency of more than 100M, the communication rate is influenced;

4: the detection principle of this patent is on the primary side of the network transformer.

Disclosure of Invention

The utility model aims to provide a detection network cable inserting device which has the advantages that a power supply is not required to be added to a network cable, the input network signal cannot be interfered, and the function of a common capacitor device can be used.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides a detect net twine insertion device, includes RJ45 net gape and network transformer, network transformer's secondary side has TX signal source and RX signal source with the RJ45 net gape series connection respectively, network transformer's opposite side is provided with U1 integrated circuit, it has C1 electric capacity and C2 electric capacity to establish ties respectively between network transformer and the U1 integrated circuit, one side electricity that network transformer was kept away from to U1 integrated circuit is connected with Vout power output.

By adopting the technical scheme, the RX signal source on the secondary side of the network transformer is connected to the differential operational amplifier with high impedance input through the C1 capacitor and the C2 capacitor, whether network insertion exists or not is detected by detecting the value of the output end of the Vout power supply (the received network pulse signal), so that the situation that a power supply is not required to be added to a network cable strongly is realized, and the signal of the original network cable network is kept clean; the differential operational amplifier is isolated by the C1 capacitor and the C2 capacitor and input with high impedance of the U1 integrated circuit, so that the differential operational amplifier can not interfere an input network signal and can be used for network equipment with the frequency of more than gigabits; meanwhile, as the C1 capacitor and the C2 capacitor can be detected on the secondary side by using common capacitor devices, compared with the patent with the comparison, the patent needs to use a high-voltage power supply to prevent high-voltage pulses generated on the power supply, and is more practical.

The utility model is further provided with: the C1 capacitance and the C2 capacitance are 1nF capacitance.

The utility model is further provided with: one side of the TX signal source is electrically connected with a PHY_TXN chip interface and a PHY_TXP chip interface respectively.

The utility model is further provided with: one side of the RX signal source is electrically connected with a PHY_RXN chip interface and a PHY_RXP chip interface respectively.

The utility model is further provided with: and one side of the U1 integrated circuit is respectively provided with a power supply V+ and a V-access terminal.

In summary, the utility model has the following beneficial effects:

1. a power supply is not required to be added to the network cable, so that the signal of the original network cable network is kept clean;

2. the differential operational amplifier which is isolated by the C1 capacitor and the C2 capacitor and input by the U1 integrated circuit with high impedance can not interfere the input network signal, and can be used for network equipment with the size of more than gigabit;

3. because at the secondary side detection, the C1 electric capacity, the available ordinary electric capacity device of C2 electric capacity compare with above-mentioned comparison patent needs to use high voltage type power to prevent the high voltage pulse that produces on the power, this patent is more practical.

Drawings

Fig. 1 is a schematic circuit structure of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Example 1:

referring to fig. 1, a detection network cable insertion device comprises an RJ45 network port and a network transformer, wherein a TX signal source and an RX signal source are respectively connected in series with the RJ45 network port on the secondary side of the network transformer, a U1 integrated circuit is arranged on the other side of the network transformer, a C1 capacitor and a C2 capacitor are respectively connected in series between the network transformer and the U1 integrated circuit, and a Vout power output end is electrically connected on one side of the U1 integrated circuit far away from the network transformer.

Referring to fig. 1, both the C1 capacitance and the C2 capacitance are 1nF capacitances.

Referring to fig. 1, one side of the tx signal source is electrically connected to a phy_txn chip interface and a phy_txp chip interface, respectively.

Referring to fig. 1, one side of an rx signal source is electrically connected with a phy_rxn chip interface and a phy_rxp chip interface, respectively.

Referring to fig. 1, one side of the U1 integrated circuit is provided with power v+ and V-access terminals, respectively.

The use process is briefly described: the method is characterized in that an RX signal source on the secondary side of a network transformer is connected to a differential operational amplifier with high impedance input through a C1 capacitor and a C2 capacitor, whether network insertion exists or not is detected through detecting the value of the output end of the Vout power supply (a received network pulse signal), and meanwhile (detecting the value of the output end of the Vout power supply is not limited to ADC acquisition by using an MCU).

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims

1. The utility model provides a detect net twine insertion device, includes RJ45 net gape and network transformer, its characterized in that: the secondary side of the network transformer is respectively connected with a TX signal source and an RX signal source in series with an RJ45 network port, a U1 integrated circuit is arranged on the other side of the network transformer, a C1 capacitor and a C2 capacitor are respectively connected between the network transformer and the U1 integrated circuit in series, and one side, far away from the network transformer, of the U1 integrated circuit is electrically connected with an Vout power supply output end.

2. The device for detecting the insertion of a net twine according to claim 1, wherein: the C1 capacitance and the C2 capacitance are 1nF capacitance.

3. The device for detecting the insertion of a net twine according to claim 1, wherein: one side of the TX signal source is electrically connected with a PHY_TXN chip interface and a PHY_TXP chip interface respectively.

4. The device for detecting the insertion of a net twine according to claim 1, wherein: one side of the RX signal source is electrically connected with a PHY_RXN chip interface and a PHY_RXP chip interface respectively.

5. The device for detecting the insertion of a net twine according to claim 1, wherein: and one side of the U1 integrated circuit is respectively provided with a power supply V+ and a V-access terminal.