CN216146086U

CN216146086U - Control protection system of TR subassembly

Info

Publication number: CN216146086U
Application number: CN202122009474.0U
Authority: CN
Inventors: 李大宝
Original assignee: Nanjing Tianlang Defense Technology Co ltd
Current assignee: Nanjing Tianlang Defense Technology Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-03-29
Anticipated expiration: 2031-08-24

Abstract

The utility model discloses a control protection system of a TR component, which comprises an FPGA module, a power detection circuit for detecting a voltage value, a voltage detection circuit for detecting the voltage value, a current detection circuit for detecting a current value, a temperature detection circuit for detecting a temperature value, a signal control circuit for detecting a control signal and a CAN bus communication circuit, wherein the power detection circuit and the CAN bus communication circuit are connected with the FPGA module, the FPGA module transmits the detection signal in real time through the CAN bus communication circuit, and the FPGA module is used for transmitting signals with normal power value, voltage value, current value, temperature value and control signal to the TR component. Through CAN bus communication circuit, the FPGA module conveys the detected signal of TR subassembly to the host computer, carries out the pertinence to the TR subassembly and maintains based on detected signal, promotes radar antenna TR subassembly's maintenance efficiency, through signal control circuit control TR subassembly, plays better guard action to the subassembly.

Description

Control protection system of TR subassembly

Technical Field

The utility model relates to protection of a radar antenna TR component, in particular to a control protection system of the TR component.

Background

Along with the development of microwave technology, the TR subassembly is the core part in the radar antenna, because the TR subassembly can appear operating temperature in the radar use, unusual, power amplifier switch damages, load short circuit etc. and these unusual can lead to the TR subassembly to damage, and the most device of TR subassembly damages and can cause the radar inefficacy.

At present, the most common method for protecting the TR component is to use a hardware circuit and directly cut off the input voltage of the TR component through a switch component, so that the TR component is protected, but the BIT information of the TR component of an upper computer cannot be reported by the method, and an operator cannot learn the abnormal reason of the TR component, so that the hardware circuit has limitation in the protection of the TR component, and the maintenance efficiency of the TR component is low.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in view of the above disadvantages, the present invention provides a control protection system for TR module that improves maintenance efficiency.

The technical scheme is as follows: in order to solve the problems, the utility model adopts a control protection system of a TR component, which comprises an FPGA module, a power detection circuit for detecting a voltage value, a voltage detection circuit for detecting a voltage value, a current detection circuit for detecting a current value, a temperature detection circuit for detecting a temperature value, a signal control circuit for detecting a control signal and a CAN bus communication circuit, wherein the power detection circuit and the CAN bus communication circuit are connected with the FPGA module, the FPGA module transmits a detection signal in real time through the CAN bus communication circuit, the voltage detection circuit, the current detection circuit, the temperature detection circuit and the signal control circuit are connected with the FPGA module through connectors, and the FPGA module is used for transmitting signals with normal power values, voltage values, current values, temperature values and control signals to the TR component.

And the FPGA module transmits the TR component detection information to the upper computer in real time through the CAN bus communication circuit or the network communication circuit.

Furthermore, the power detection circuit comprises a detection circuit, an operational amplifier circuit and a signal conversion circuit, wherein the input end of the detection circuit is connected with the SMA connector, the output end of the detection circuit is connected with the input end of the operational amplifier circuit, the output end of the operational amplifier circuit is connected with the input end of the signal conversion circuit, and the output end of the signal conversion circuit is connected with the FPGA module.

Furthermore, the detection circuit adopts AD8317, the operational amplifier circuit adopts AD8552, the signal conversion circuit adopts ADLTC2325, the FPGA module reads the voltage value of power detection circuit sampling, calculates the power value according to the voltage value, and judges whether the power value is normal.

Furthermore, the voltage detection circuit and the current detection circuit both adopt LTC2990, the voltage detection circuit and the current detection circuit are connected with an interface of the FPGA module through I2C, the FPGA module reads the numerical value of the LTC2990 register to obtain a voltage value and a current value, and judges whether the voltage value and the current value are normal.

Further, the temperature detection circuit comprises a temperature sensor, the temperature sensor measures the shell temperature of the TR component, the FPGA module reads the temperature value of the temperature sensor and judges whether the temperature value is normal or not.

Further, the signal control circuit receives a TTL level of an external control signal to obtain a pulse width and a duty ratio of the TTL level, and the FPGA module determines whether the pulse width and the duty ratio are normal.

Further, when the FPGA module determines that the power value, the voltage value, the current value, the temperature value, and the pulse width and the duty ratio of the control signal are all normal, the FPGA module converts the TTL signal into a differential signal and sends the differential signal to the ADCLK954 chip to become a 12 differential signal and send the 12 differential signal to the TR component.

Has the advantages that: compared with the prior art, the radar antenna TR component protection device has the advantages that the detection signal of the TR component is transmitted to the upper computer through the CAN bus communication circuit and the FPGA module, the TR component is maintained in a targeted mode based on the detection signal, the maintenance efficiency of the radar antenna TR component is improved, the TR component is controlled through the signal control circuit, and the component is protected well.

Drawings

Fig. 1 is a block diagram showing the overall structure of the control and protection system of the present invention.

Detailed Description

As shown in fig. 1, the control protection system for the TR component in this embodiment includes an FPGA module, a power detection circuit, a voltage detection circuit, a current detection circuit, a temperature detection circuit, a signal control circuit, a CAN bus communication circuit, a network communication circuit, a power supply, etc., where the FPGA module is connected to the voltage detection circuit, the current detection circuit, the temperature detection circuit, and the transmission protection control signal circuit of the TR component through a connector J30J-100, the power detection circuit is directly connected to the FPGA module, and the FPGA module transmits the final result of the TR component detection to an upper computer through the CAN bus communication circuit or the network communication circuit (ethernet) in real time.

The voltage detection circuit and the current detection circuit mainly adopt an LTC2990, wherein the LTC2990 is a digital temperature-voltage converter, and a temperature sensor, a 14-bit A/D converter and a register for storing temperature numbers are arranged in the LTC 2990. The voltage value is obtained from LTC2990 for detecting voltage by connecting I2C with an FPGA module interface, and the FPGA module reads the value of a register, and the voltage value with the precision of 0.3mv is obtained in the experiment of the embodiment; the current value was obtained from LTC2990, which detected the current, and the current value with an accuracy of 15.54mA was obtained in the experiment of this example. And the voltage value and the current value detected by the FPGA module are transmitted to an upper computer through a CAN bus or an Ethernet, whether the voltage value and the current value are normal or not is judged, and the FPGA module does not send a transmitting TTL signal to the TR component if the voltage value and the current value are abnormal.

The temperature detection circuit comprises a temperature sensor, the temperature sensor measures the shell temperature of the TR component, the temperature sensor is connected with the FPGA module through a J30J-100 connector, the FPGA module reads the temperature value of the temperature sensor, the temperature value detected by the FPGA module is transmitted to an upper computer through a CAN bus or an Ethernet, whether the temperature value is normal or not is judged, and the FPGA module does not send a transmitting TTL signal to the TR component if the temperature value is abnormal.

The power detection circuit comprises a detection circuit, an operational amplifier circuit and a signal conversion circuit, the detection circuit adopts AD8317, the operational amplifier circuit adopts AD8552, the signal conversion circuit adopts ADLTC2325, through SMA decay current, then send to the detection circuit AD8317, then send to the operational amplifier circuit AD8552, then send the signal to ADLTC2325, finally signal FPGA module reads the voltage value of sampling through the SPI interface, calculate the signal power value of sending into according to the voltage value, the power value that FPGA module detected passes through CAN bus or ethernet and conveys to the host computer, and judge whether the power value is normal, the FPGA module does not send transmission TTL signal to TR subassembly if the power value is abnormal.

The signal control circuit mainly receives a control signal of the external module to the TR component, the signal control circuit receives a TTL level of a signal transmitted by the external module to obtain a pulse width and a duty ratio of the signal, the PGA module judges whether the pulse width and the duty ratio are normal or not, and the FPGA module does not transmit the transmitted TTL signal to the TR component if the pulse width and the duty ratio are abnormal.

When the pulse width, duty ratio, power value, voltage value, current value and temperature value detected by the FPGA module are normal, the TTL level signal is converted into a differential signal and is sent to the ADCLK954 chip to be changed into a 12 differential signal and is sent to the TR component, otherwise, the TTL signal of a transmitting signal is not sent to the TR component, and the protection control of the TR component is realized.

Claims

1. The utility model provides a control protection system of TR subassembly, its characterized in that, includes FPGA module, the power detection circuit who detects the magnitude of voltage, the voltage detection circuit who detects the magnitude of voltage, the current detection circuit who detects the magnitude of current, the temperature detection circuit who detects the magnitude of temperature, the signal control circuit who detects control signal, CAN bus communication circuit, power detection circuit, CAN bus communication circuit are connected with the FPGA module, the FPGA module passes through CAN bus communication circuit and conveys detection signal in real time, voltage detection circuit, current detection circuit, temperature detection circuit and signal control circuit pass through the connector and are connected with the FPGA module, the FPGA module is used for sending power value, magnitude of voltage, current value, temperature value and the equal normal signal of control signal to the TR subassembly.

2. The TR component control protection system according to claim 1, further comprising a network communication circuit, wherein the FPGA module transmits the TR component detection information to the upper computer in real time through the CAN bus communication circuit or the network communication circuit.

3. The TR component control protection system of claim 1, wherein said power detection circuit comprises a detector circuit, an operational amplifier circuit and a signal converter circuit, wherein an input end of said detector circuit is connected to said SMA connector, an output end of said detector circuit is connected to an input end of said operational amplifier circuit, an output end of said operational amplifier circuit is connected to an input end of said signal converter circuit, and an output end of said signal converter circuit is connected to said FPGA module.

4. The TR component control protection system of claim 3, wherein the detection circuit is AD8317, the operational amplifier circuit is AD8552, the signal conversion circuit is ADLTC2325, the FPGA module reads the voltage value sampled by the power detection circuit, calculates the power value according to the voltage value, and judges whether the power value is normal.

5. The TR component control protection system of claim 4, wherein the voltage detection circuit and the current detection circuit both adopt LTC2990, the voltage detection circuit and the current detection circuit are connected with an interface of the FPGA module through I2C, and the FPGA module reads a value of an LTC2990 register to obtain a voltage value and a current value and judges whether the voltage value and the current value are normal or not.

6. The TR component control protection system of claim 5, wherein the temperature detection circuit comprises a temperature sensor, the temperature sensor measures the temperature of the housing of the TR component, and the FPGA module reads the temperature value of the temperature sensor and judges whether the temperature value is normal.

7. The TR module of claim 6, wherein the signal control circuit receives a TTL level of an external control signal to obtain a pulse width and a duty ratio of the TTL level, and the FPGA module determines whether the pulse width and the duty ratio are normal.

8. The control protection system of TR component of claim 7 wherein said FPGA module converts TTL signal into differential signal and sends it to ADCLK954 chip to become 12 differential signal and sends it to TR component when said FPGA module determines that power, voltage, current, temperature and control signal pulse width and duty cycle are all normal.