Spatial spectrum interference tester

Abstract

The utility model provides a spatial frequency spectrum interference tester, which comprises a frequency sweeping module, a signal source module, a master control module and a trigger module, and is characterized in that the output end of the frequency sweeping module is electrically connected with the input end of the master control module, and the frequency sweeping module is used for detecting radio signals of a preset frequency band in a space; the input end of the signal source module is electrically connected with the output end of the main control module, and the signal source module is used for generating an interference signal and sending the interference signal to a space; the trigger module is electrically connected with the main control module and is used for detecting the duration of the interference signal; the arranged main control module controls the signal source module to generate the interference signal and send the interference signal to the space, the trigger module enables the internal timer to be started, when the interference signal enables the receiver signal to be disconnected, the internal timer stops, the time length of the interference signal is obtained according to the time difference, and then the noise interference time length can be detected. Therefore, the detection effectiveness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless device detection, in particular to a space spectrum interference tester. Background Art

[0002] A spectrum interference tester, also known as a spectrum analyzer, is an electronic measuring instrument used to measure and analyze signal spectrum characteristics. It can monitor the signal's spectrum distribution in real time, helping engineers quickly locate and resolve problems such as signal interference and spectrum congestion. With the rapid development of wireless communication technology, the effective utilization and management of spectrum resources has become particularly important, and spectrum analyzers have therefore been widely used.

[0003] Publication number CN218243532U discloses an anti-interference test RF device for testing the anti-interference capability of a receiving device during wireless signal transmission. The device includes an RF signal generator, an RF signal monitoring device, and a main control device. The RF signal generator and the RF signal monitoring device are respectively connected to the main control device. The RF signal generator is used to generate an adjustable and controllable interference signal, and the RF signal monitoring device is used to receive interference signals emitted by the RF signal generator across the entire frequency band. The main control device monitors and adjusts the interference signal using the RF signal received by the RF signal monitoring device.

[0004] Currently, when detecting the anti-interference ability of wireless signals during transmission, it is impossible to detect the interference duration of the wireless signals, and thus it is impossible to know the duration of noise interference, which reduces the effectiveness of the detection. Utility Model Content

[0005] In view of this, the present invention proposes a spatial spectrum interference tester, which can detect the interference duration of wireless signals, thereby improving the effectiveness of the detection.

[0006] The technical solution of the present invention is implemented as follows: The present invention provides a spatial spectrum interference tester, including a frequency sweep module, a signal source module, a main control module and a trigger module, wherein:

[0007] The output end of the frequency scanning module is electrically connected to the input end of the main control module, and the frequency scanning module is used to detect radio signals of a preset frequency band in the space;

[0008] The input end of the signal source module is electrically connected to the output end of the main control module, and the signal source module is used to generate an interference signal and send it into the space;

[0009] The trigger module is electrically connected to the main control module and is used to detect the duration of the interference signal.

[0010] On the basis of the above technical solution, preferably, the trigger module includes a feedback control chip U7, a trigger start module, a trigger stop module and a feedback module, wherein,

[0011] The trigger start module is electrically connected to the feedback control chip U7 and the signal source module respectively, and is used to trigger the internal timer of the feedback control chip U7 to start;

[0012] The trigger stop module is electrically connected to the external receiver and the feedback control chip U7 respectively, and is used to trigger the internal timer of the feedback control chip U7 to stop;

[0013] The feedback module is electrically connected to the feedback control chip U7 and the main control module respectively, and is used to transmit the duration signal of the interference signal to the main control module.

[0014] On the basis of the above technical solution, preferably, the trigger start module 41 includes a resistor R45, a resistor R46, a bidirectional breakdown diode D6, a bidirectional breakdown diode D7 and a communication interface CN2, wherein pin 3 of the communication interface CN2 is electrically connected to one end of the resistor R45 and the bidirectional breakdown diode D7 respectively, the other end of the resistor R45 is electrically connected to the feedback control chip U7, pin 2 of the communication interface CN2 is electrically connected to one end of the resistor R46 and the bidirectional breakdown diode D6 respectively, the other end of the resistor R46 is electrically connected to the feedback control chip U7, the other ends of the bidirectional breakdown diode D6 and the bidirectional breakdown diode D7 are grounded respectively, and the communication interface CN2 is electrically connected to the signal source module 2.

[0015] On the basis of the above technical solution, preferably, the trigger stop module 42 includes a connection terminal row J4, a bidirectional breakdown diode D5, a resistor R28, an optocoupler U6, a capacitor C25 and a resistor R24, wherein the connection terminal row J4 is electrically connected to the external receiver, one end of the connection terminal row J4 is electrically connected to the resistor R28 and one end of the bidirectional breakdown diode D5 respectively, the other end of the resistor R28 is electrically connected to the first connection end of the optocoupler U6, the fourth connection end of the optocoupler U6 is electrically connected to the resistor R24, the capacitor C25 and the feedback control chip U7 respectively, the other end of the capacitor C25 and the third connection end of the optocoupler U6 are commonly grounded, and the other end of the bidirectional breakdown diode D5 and the second end of the optocoupler U6 are grounded respectively.

[0016] On the basis of the above technical solution, preferably, the feedback module 43 includes a communication chip U11, a resistor R54, a resistor R55, a resistor R53, a capacitor C24, a capacitor C25, a capacitor C26, a capacitor C27, and a voltage-stabilizing diode D8, wherein the pin 21 of the communication chip U11 is electrically connected to one end of the resistor R54, and the other end of the resistor R54 is electrically connected to the feedback control chip U7, the pin 20 of the communication chip U11 is electrically connected to one end of the resistor R55, and the other end of the resistor R55 is electrically connected to the feedback control chip U7, Pin 5 of the communication chip U11 is electrically connected to one end of the resistor R53 and the capacitor C24, respectively. Pin 6 of the communication chip U11 is electrically connected to the other end of the capacitor C25 and the capacitor C53, respectively. The other ends of the capacitors C24 and C25 are grounded, respectively. Pin 8 of the communication chip U11 is electrically connected to one end of the capacitor C26, the capacitor C27 and the Zener diode D8, respectively. The other ends of the capacitors C26, the capacitor C27 and the Zener diode D8 are commonly grounded. Pin 3 and pin 4 of the communication chip U11 are electrically connected to the main control module 3.

[0017] On the basis of the above technical solution, preferably, a plurality of step-down modules are also included, the input end of the step-down module is electrically connected to the external direct power supply, and the output end of the step-down module is electrically connected to the feedback control chip U7 and the power supply end of the main control module for energy supply.

[0018] On the basis of the above technical solution, preferably, the step-down module includes a step-down chip U4, a capacitor C19, a capacitor C20, a capacitor C21, a resistor R11, a resistor R14, a transistor Q2, a capacitor C15, a Zener diode D2, a filter L2, a capacitor EC1, a capacitor EC2, a capacitor C17, a resistor R9, a resistor R13 and a connection terminal row J3, and pin 7 of the step-down chip U4 is electrically connected to the capacitor C19, the capacitor C20, the capacitor C21 and the external DC power supply, and the other ends of the capacitors C19, C20 and C21 are grounded respectively, and pin 1 of the step-down chip U4 is electrically connected to the capacitor C15, and the other end of the capacitor C15 is electrically connected to the pin 1 of the step-down chip U4, the negative electrode of the Zener diode D2, and the filter L2. The other end of the filter L2 is electrically connected to the capacitor EC1, the capacitor EC2, the capacitor C17, the resistor R17, one end of the connection terminal row J3 and the output voltage, respectively. The other end of the resistor R17 is electrically connected to the pin 4 of the buck chip U4 and the resistor R19, respectively. The positive electrode of the voltage regulator diode D2, the capacitor EC5, the capacitor EC6, the capacitor C26, the resistor R19 and the other end of the connection terminal row 13 are grounded, respectively. The pin 5 of the buck chip U4 is electrically connected to the collector of the transistor Q2, the base of the transistor Q2 is electrically connected to the resistor R11, the resistor R14 and the feedback control chip U7, respectively. The other end of the resistor R14 and the emitter of the transistor Q2 are commonly grounded, and the other end of the resistor R11 is electrically connected to the output voltage end of the second power supply.

[0019] On the basis of the above technical solution, preferably, it also includes a temperature detection module and a cooling control module. The temperature detection module is electrically connected to the input end of the feedback control chip U7 and is used to detect the temperature of the feedback control chip U7. The output end of the feedback control chip U7 is electrically connected to the input end of the cooling control module and is used to control the rotation of the external fan for cooling.

[0020] On the basis of the above technical solution, preferably, the temperature detection module includes an amplifier U8, a resistor R26, a capacitor C37, a capacitor C35, a capacitor C39, a resistor R24, and a thermistor R28, wherein the positive input terminal of the amplifier U8 is electrically connected to the resistor R24, the capacitor C39 and one end of the thermistor R28 respectively, the other end of the thermistor R28 and the capacitor C39 are commonly grounded, the other end of the resistor R24 ​​is electrically connected to the negative power supply end of the power supply, the inverting input terminal of the amplifier U8 is electrically connected to the output terminal of the amplifier U8 and one end of the resistor R26, the other end of the resistor R26 is electrically connected to the input terminal of the feedback control chip U7 and the capacitor C37 respectively, the power supply end of the amplifier U8 is electrically connected to the positive power supply end of the power supply and one end of the capacitor C35 respectively, and the capacitor C35, the capacitor C37 and the ground end of the amplifier U8 are grounded respectively.

[0021] On the basis of the above technical solution, preferably, the cooling control module includes a resistor R35, a resistor R39, a transistor Q5 and a connection terminal row J6, one end of the resistor R35 is electrically connected to the output end of the feedback control chip U7, the other end of the resistor R35 is electrically connected to the resistor R39 and the base of the transistor Q5 respectively, the emitter of the transistor Q5 and the other end of the resistor R39 are commonly grounded, the other end of the transistor Q5 is electrically connected to one end of the connection terminal row J6, the other end of the connection terminal row J6 is connected to an external DC power supply, and the connection terminal row J6 is electrically connected to the fan.

[0022] Compared with the prior art, the spatial spectrum interference tester of the present invention has the following beneficial effects:

[0023] (1) The main control module is used to control the signal source module to generate an interference signal and send it to the space, and the internal timer is started by the trigger module. When the interference signal disconnects the receiver signal, the internal timer is stopped. The duration of the interference signal is obtained according to the time difference, and the noise interference duration can be detected, thereby improving the effectiveness of the detection;

[0024] (2) The noise interference duration can be detected by the cooperation of the feedback control chip U7, the trigger start module and the trigger stop module. The high precision and accuracy of the interference duration measurement are ensured through the automatic trigger and stop mechanism and the precise timer measurement.

[0025] (3) The temperature detection module and the cooling control module are set up to monitor and control the operating temperature of the feedback control chip U7 in real time, ensuring that it operates within an appropriate temperature range, thereby improving the stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a circuit principle block diagram of the spatial spectrum interference tester of the utility model;

[0028] Figure 2 This is the circuit diagram of the feedback control chip U1 of the spatial spectrum interference tester of the present utility model;

[0029] Figure 3 This is a circuit diagram of a trigger start module of the spatial spectrum interference tester of the present utility model;

[0030] Figure 4 This is a circuit diagram of the trigger stop module of the spatial spectrum interference tester of the present utility model;

[0031] Figure 5 This is a circuit diagram of a feedback module of the spatial spectrum interference tester of the present utility model;

[0032] Figure 6 This is a circuit diagram of a step-down module of the spatial spectrum interference tester of the present utility model;

[0033] Figure 7 This is a circuit diagram of the temperature detection module of the spatial spectrum interference tester of the present utility model;

[0034] Figure 8 This is a circuit diagram of a cooling control module of the spatial spectrum interference tester of the present utility model. DETAILED DESCRIPTION

[0035] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] like Figure 1-2 As shown, the utility model is a spatial spectrum interference tester, comprising a frequency scanning module 1, a signal source module 2, a main control module 3 and a trigger module 4, wherein the output end of the frequency scanning module 1 is electrically connected to the input end of the main control module 3, and the frequency scanning module 1 is used to detect radio signals of a preset frequency band in the space; the input end of the signal source module 2 is electrically connected to the output end of the main control module 3, and the signal source module 2 is used to generate an interference signal and send it into the space; the trigger module 4 is electrically connected to the main control module 3 for detecting the duration of the interference signal.

[0037] It should be noted that the wireless signal is sent from the transmitter to the receiver. First, the spectrum analyzer detects the radio signals in the nearby frequency band by setting a certain frequency band of interest. The detected wireless signal is transmitted to the main control module 3 for reading and display. Then the main control module 3 controls the signal source module 2 to generate an interference sequence signal and sends it into space through the built-in power amplifier. When the interference signal is sent, the internal timer of the feedback control chip U7 is triggered to start. When the interference signal disconnects the receiver signal, the internal timer of the feedback control chip U1 is triggered to stop, and the start and stop time of the internal timer of the feedback control chip U7 is the interference duration of the wireless signal, so that the noise interference duration can be detected, thereby improving the effectiveness of the detection.

[0038] The trigger module 4 in this embodiment includes a feedback control chip U7, a trigger start module 41, a trigger stop module 42 and a feedback module 43, wherein the trigger start module 41 is electrically connected to the feedback control chip U7 and the signal source module 2 respectively, and is used to trigger the internal timer of the feedback control chip U7 to start; the trigger stop module 42 is electrically connected to the external receiver and the feedback control chip U7 respectively, and is used to trigger the internal timer of the feedback control chip U7 to stop; the feedback module 43 is electrically connected to the feedback control chip U7 and the main control module 3 respectively, and is used to transmit the duration signal of the interference signal to the main control module 3.

[0039] It should be noted that when the main control module 3 issues an instruction to generate and send an interference signal, the trigger start module 41 receives the instruction and immediately triggers the feedback control chip U7 to start its internal timer. The start of the timer marks the beginning of the interference duration measurement. The input end of the trigger stop module 42 is electrically connected to the external receiver for monitoring the received signal status of the external receiver. When the signal at the receiver end is disconnected due to the interference signal, the trigger stop module 42 will receive this signal status change and immediately trigger the internal timer of the feedback control chip U7 to stop. The feedback module 43 is responsible for obtaining the measurement result of the timer from the feedback control chip U7 and transmitting this result to the main control module 3. Through the automatic trigger and stop mechanism and precise timer measurement, the high precision and accuracy of the interference duration measurement are ensured.

[0040] like Figure 3 As shown, as a preferred embodiment, the trigger start module 41 in this embodiment includes a resistor R45, a resistor R46, a bidirectional breakdown diode D6, a bidirectional breakdown diode D7 and a communication interface CN2, wherein pin 3 of the communication interface CN2 is electrically connected to one end of the resistor R45 and the bidirectional breakdown diode D7 respectively, and the other end of the resistor R45 is electrically connected to the feedback control chip U7, pin 2 of the communication interface CN2 is electrically connected to one end of the resistor R46 and the bidirectional breakdown diode D6 respectively, and the other end of the resistor R46 is electrically connected to the feedback control chip U7, the other ends of the bidirectional breakdown diode D6 and the bidirectional breakdown diode D7 are grounded respectively, and the communication interface CN2 is electrically connected to the signal source module 2.

[0041] It should be noted that when the signal source module 2 is ready to send an interference signal, it will send a start signal to the trigger start module 41 through the communication interface CN2, which will be transmitted to the start pin of the feedback control chip U7; after receiving this start signal, the feedback control chip U7 will immediately start its internal timer and start recording the duration of the interference signal.

[0042] like Figure 4As shown, as a preferred embodiment, the trigger stop module 42 in this embodiment includes a connection terminal row J4, a bidirectional breakdown diode D5, a resistor R28, an optocoupler U6, a capacitor C25 and a resistor R24, wherein the connection terminal row J4 is electrically connected to the external receiver, one end of the connection terminal row J4 is electrically connected to the resistor R28 and one end of the bidirectional breakdown diode D5 respectively, the other end of the resistor R28 is electrically connected to the first connection end of the optocoupler U6, the fourth connection end of the optocoupler U6 is electrically connected to the resistor R24, the capacitor C25 and the feedback control chip U7 respectively, the other end of the capacitor C25 and the third connection end of the optocoupler U6 are commonly grounded, and the other end of the bidirectional breakdown diode D5 and the second end of the optocoupler U6 are grounded respectively.

[0043] It should be noted that when the external receiver and the transmitter cannot communicate, a signal will enter the trigger stop module 42 through the connection terminal J4. The signal is first protected by the bidirectional breakdown diode D5 to prevent excessive voltage from damaging the subsequent circuit. Then, the signal is sent to the input end of the optocoupler U6 after current limiting by the resistor R28, and after adjustment by the resistor R24 ​​and filtering by the capacitor C25, it is sent to the feedback control chip U7. After receiving this signal, the feedback control chip U7 will immediately stop the operation of the internal timer, thereby ending the measurement of the interference duration.

[0044] like Figure 5 As shown, as a preferred embodiment, the feedback module 43 in this embodiment includes a communication chip U11, a resistor R54, a resistor R55, a resistor R53, a capacitor C24, a capacitor C25, a capacitor C26, a capacitor C27, and a voltage-stabilizing diode D8, wherein the pin 21 of the communication chip U11 is electrically connected to one end of the resistor R54, and the other end of the resistor R54 is electrically connected to the feedback control chip U7, the pin 20 of the communication chip U11 is electrically connected to one end of the resistor R55, and the other end of the resistor R55 is electrically connected to the feedback control chip U7 Pin 5 of the communication chip U11 is electrically connected to one end of the resistor R53 and the capacitor C24 respectively, pin 6 of the communication chip U11 is electrically connected to the other end of the capacitor C25 and the capacitor C53 respectively, the other ends of the capacitor C24 and the capacitor C25 are grounded respectively, pin 8 of the communication chip U11 is electrically connected to one end of the capacitor C26, the capacitor C27 and the Zener diode D8 respectively, the other ends of the capacitor C26, the capacitor C27 and the Zener diode D8 are commonly grounded, and pins 3 and 4 of the communication chip U11 are electrically connected to the main control module 3.

[0045] It should be noted that, after the feedback control chip U7 completes the measurement of the interference duration, it will output the measurement result in the form of an electrical signal, first transmitted to the communication chip U11, and then transmitted to the main controller 3 through the USB serial port for display.

[0046] This embodiment also includes multiple step-down modules 5, the input end of the step-down module 5 is electrically connected to the external direct power supply, and the output end of the step-down module 5 is electrically connected to the feedback control chip U7 and the power supply end of the main control module 3 for energy supply.

[0047] Among them, in order to solve the voltage matching problem between the external power supply and the internal circuit, the introduction of multiple step-down modules 5 in this embodiment ensures that the feedback control chip U7 and the main control module 3 can operate in a safe and stable voltage environment, which not only protects the internal circuit from high voltage damage, but also improves the reliability and stability of the entire system.

[0048] like Figure 6 As shown, as a preferred embodiment, the buck module 5 in this embodiment includes a buck chip U4, a capacitor C19, a capacitor C20, a capacitor C21, a resistor R11, a resistor R14, a transistor Q2, a capacitor C15, a Zener diode D2, a filter L2, a capacitor EC1, a capacitor EC2, a capacitor C17, a resistor R9, a resistor R13 and a connection terminal row J3, and the pin 7 of the buck chip U4 is electrically connected to the capacitor C19, the capacitor C20, the capacitor C21 and the external DC power supply respectively, and the other ends of the capacitors C19, C20 and C21 are grounded respectively, and the pin 1 of the buck chip U4 is electrically connected to the capacitor C15, and the other end of the capacitor C15 is electrically connected to the pin 1 of the buck chip U4, the negative electrode of the Zener diode D2, the filter L 2, the other end of the filter L2 is electrically connected to the capacitor EC1, the capacitor EC2, the capacitor C17, the resistor R17, one end of the connection terminal row J3 and the output voltage respectively, the other end of the resistor R17 is electrically connected to the pin 4 of the step-down chip U4 and the resistor R19 respectively, the anode of the voltage regulator diode D2 and the capacitor EC5, the capacitor EC6, the capacitor C26, the resistor R19 and the other end of the connection terminal row 13 are grounded respectively, the pin 5 of the step-down chip U4 is electrically connected to the collector of the transistor Q2, the base of the transistor Q2 is electrically connected to the resistor R11, the resistor R14 and the feedback control chip U7 respectively, the other end of the resistor R14 and the emitter of the transistor Q2 are commonly grounded, and the other end of the resistor R11 is electrically connected to the output voltage terminal of the second power supply.

[0049] This embodiment also includes a temperature detection module 6 and a cooling control module 7. The temperature detection module 6 is electrically connected to the input end of the feedback control chip U7 for detecting the temperature of the feedback control chip U7. The output end of the feedback control chip U7 is electrically connected to the input end of the cooling control module 7 for controlling the rotation of the external fan for cooling.

[0050] It should be noted that, through the provided temperature detection module 6 and cooling control module 7, this embodiment can monitor and control the operating temperature of the feedback control chip U7 in real time, ensuring that it operates within an appropriate temperature range, thereby improving the stability and reliability of the system.

[0051] like Figure 7 As shown, as a preferred embodiment, the temperature detection module in this embodiment includes an amplifier U8, a resistor R26, a capacitor C37, a capacitor C35, a capacitor C39, a resistor R24, and a thermistor R28, wherein the positive input terminal of the amplifier U8 is electrically connected to the resistor R24, the capacitor C39 and one end of the thermistor R28 respectively, the other end of the thermistor R28 and the capacitor C39 are commonly grounded, the other end of the resistor R24 ​​is electrically connected to the negative power supply end of the power supply, the inverting input terminal of the amplifier U8 is electrically connected to the output terminal of the amplifier U8 and one end of the resistor R26, the other end of the resistor R26 is electrically connected to the input terminal of the feedback control chip U7 and the capacitor C37 respectively, the power supply end of the amplifier U8 is electrically connected to the positive power supply end of the power supply and one end of the capacitor C35 respectively, and the capacitor C35, the capacitor C37 and the ground terminal of the amplifier U8 are grounded respectively.

[0052] It should be noted that the resistance of thermistor R28 varies with ambient temperature. When the ambient temperature rises, R28's resistance decreases; when the ambient temperature drops, R28's resistance increases. Resistors R24 and R28 are connected in series and connected to the positive input of amplifier U8, forming a voltage divider circuit. Because the other end of R24 is connected to the negative power supply, the voltage at U8's positive input varies with the resistance of R28. Amplifier U8 amplifies the voltage difference between its positive and negative inputs and outputs the amplified voltage signal through its output. Because the negative input and output are connected via resistor R26, forming a negative feedback loop, the amplified voltage signal is output through resistor R26 to the input of feedback control chip U7 for subsequent temperature control or monitoring.

[0053] like Figure 8 As shown, as a preferred implementation, the temperature reduction control module in this embodiment includes a resistor R35, a resistor R39, a transistor Q5 and a connection terminal row J6, one end of the resistor R35 is electrically connected to the output end of the feedback control chip U7, the other end of the resistor R35 is electrically connected to the resistor R39 and the base of the transistor Q5 respectively, the emitter of the transistor Q5 and the other end of the resistor R39 are commonly grounded, the other end of the transistor Q5 is electrically connected to one end of the connection terminal row J6, the other end of the connection terminal row J6 is connected to an external DC power supply, and the connection terminal row J6 is electrically connected to the fan.

[0054] It should be noted that the feedback control chip U7 sends a control signal to the resistor R35 through its output terminal according to the input signal of the temperature detection module or other sensors to control the fan to start and dissipate heat for the feedback control chip U7.

[0055] Working principle:

[0056] When the transmitter and the receiver communicate normally, the trigger stop module 42 outputs a high level. When the signal source module 2 sends an interference signal, it also sends a signal to the trigger start module. The signal is transmitted to the feedback control chip U7. At this time, the feedback control chip U7 starts the internal timer and detects the output pin level of the trigger stop module 42. When the receiver disconnects the signal output, the output pin of the trigger stop module 42 is a low level. When the feedback control chip U7 detects that the output pin of the trigger stop module 42 is a low level, it stops the internal timer. The time difference of the internal timer is the response time of the interference duration.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A spatial spectrum interference tester, characterized in that: It includes a frequency sweep module (1), a signal source module (2), a main control module (3) and a trigger module (4), wherein: The output end of the frequency scanning module (1) is electrically connected to the input end of the main control module (3), and the frequency scanning module (1) is used to detect radio signals of a preset frequency band in a space; The input end of the signal source module (2) is electrically connected to the output end of the main control module (3), and the signal source module (2) is used to generate an interference signal and send it into space; The trigger module (4) is electrically connected to the signal source module (2) and the main control module (3) respectively, and is used to detect the duration of the interference signal.

2. The spatial spectrum interference tester according to claim 1, wherein: The trigger module (4) includes a feedback control chip U7, a trigger start module (41), a trigger stop module (42) and a feedback module (43), wherein: The trigger start module (41) is electrically connected to the feedback control chip U7 and the signal source module (2) respectively, and is used to trigger the internal timer of the feedback control chip U7 to start; The trigger stop module (42) is electrically connected to the external receiver and the feedback control chip U7 respectively, and is used to trigger the internal timer of the feedback control chip U7 to stop; The feedback module (43) is electrically connected to the feedback control chip U7 and the main control module (3) respectively, and is used to transmit the duration signal of the interference signal to the main control module (3).

3. The spatial spectrum interference tester according to claim 2, wherein: The trigger start module (41) includes a resistor R45, a resistor R46, a bidirectional breakdown diode D6, a bidirectional breakdown diode D7 and a communication interface CN2, wherein the pin 3 of the communication interface CN2 is electrically connected to the resistor R45 and one end of the bidirectional breakdown diode D7 respectively, the other end of the resistor R45 is electrically connected to the feedback control chip U7, the pin 2 of the communication interface CN2 is electrically connected to the resistor R46 and one end of the bidirectional breakdown diode D6 respectively, the other end of the resistor R46 is electrically connected to the feedback control chip U7, the other ends of the bidirectional breakdown diode D6 and the bidirectional breakdown diode D7 are grounded respectively, and the communication interface CN2 is electrically connected to the signal source module (2).

4. The spatial spectrum interference tester according to claim 2, wherein: The trigger stop module (42) includes a connection terminal row J4, a bidirectional breakdown diode D5, a resistor R28, a photoelectric coupler U6, a capacitor C25 and a resistor R24, wherein the connection terminal row J4 is electrically connected to an external receiver, one end of the connection terminal row J4 is electrically connected to the resistor R28 and one end of the bidirectional breakdown diode D5 respectively, the other end of the resistor R28 is electrically connected to the first connection end of the photoelectric coupler U6, the fourth connection end of the photoelectric coupler U6 is electrically connected to the resistor R24, the capacitor C25 and the feedback control chip U7 respectively, the other end of the capacitor C25 and the third connection end of the photoelectric coupler U6 are commonly grounded, and the other end of the bidirectional breakdown diode D5 and the second end of the photoelectric coupler U6 are respectively grounded.

5. The spatial spectrum interference tester according to claim 2, wherein: The feedback module (43) includes a communication chip U11, a resistor R54, a resistor R55, a resistor R53, a capacitor C24, a capacitor C25, a capacitor C26, a capacitor C27, and a voltage-stabilizing diode D8, wherein the pin 21 of the communication chip U11 is electrically connected to one end of the resistor R54, and the other end of the resistor R54 is electrically connected to the feedback control chip U7, the pin 20 of the communication chip U11 is electrically connected to one end of the resistor R55, and the other end of the resistor R55 is electrically connected to the feedback control chip U7, and the communication chip U11 Pin 5 of the communication chip U11 is electrically connected to one end of the resistor R53 and the capacitor C24 respectively, pin 6 of the communication chip U11 is electrically connected to the other end of the capacitor C25 and the capacitor C53 respectively, the other ends of the capacitors C24 and C25 are grounded respectively, pin 8 of the communication chip U11 is electrically connected to one end of the capacitor C26, the capacitor C27 and the voltage-stabilizing diode D8 respectively, the other ends of the capacitors C26, the capacitor C27 and the voltage-stabilizing diode D8 are commonly grounded, and pins 3 and 4 of the communication chip U11 are electrically connected to the main control module (3).

6. The spatial spectrum interference tester according to claim 2, wherein: It also includes a plurality of step-down modules (5), the input end of each step-down module (5) is electrically connected to an external direct power supply, and the output end of each step-down module (5) is electrically connected to the feedback control chip U7 and the power supply end of the main control module (3) for energy supply.

7. The spatial spectrum interference tester according to claim 6, wherein: The step-down module (5) includes a step-down chip U4, a capacitor C19, a capacitor C20, a capacitor C21, a resistor R11, a resistor R14, a transistor Q2, a capacitor C15, a voltage-stabilizing diode D2, a filter L2, a capacitor EC1, a capacitor EC2, a capacitor C17, a resistor R9, a resistor R13 and a connection terminal row J3. Pin 7 of the step-down chip U4 is electrically connected to the capacitor C19, the capacitor C20, the capacitor C21 and the external DC power supply respectively. The other ends of the capacitors C19, C20 and C21 are grounded respectively. Pin 1 of the step-down chip U4 is electrically connected to the capacitor C15. The other end of the capacitor C15 is electrically connected to the pin 1 of the step-down chip U4, the negative electrode of the voltage-stabilizing diode D2 and the filter L2 respectively. The filter The other end of the device L2 is electrically connected to capacitor EC1, capacitor EC2, capacitor C17, resistor R17, one end of the connection terminal row J3 and the output voltage respectively. The other end of the resistor R17 is electrically connected to pin 4 of the step-down chip U4 and resistor R19 respectively. The positive electrode of the voltage regulator diode D2 and the capacitor EC5, capacitor EC6, capacitor C26, resistor R19 and the other end of the connection terminal row 13 are grounded respectively. Pin 5 of the step-down chip U4 is electrically connected to the collector of the transistor Q2. The base of the transistor Q2 is electrically connected to resistor R11, resistor R14 and the feedback control chip U7 respectively. The other end of the resistor R14 and the emitter of the transistor Q2 are commonly grounded. The other end of the resistor R11 is electrically connected to the output voltage end of the second power supply.

8. The spatial spectrum interference tester according to claim 2, wherein: The system further comprises a temperature detection module (6) and a cooling control module (7). The temperature detection module (6) is electrically connected to the input end of the feedback control chip U7 and is used to detect the temperature of the feedback control chip U7. The output end of the feedback control chip U7 is electrically connected to the input end of the cooling control module (7) and is used to control the rotation of an external fan to cool the system.

9. The spatial spectrum interference tester according to claim 8, wherein: The temperature detection module (6) includes an amplifier U8, a resistor R26, a capacitor C37, a capacitor C35, a capacitor C39, a resistor R24, and a thermistor R28, wherein the positive phase input terminal of the amplifier U8 is electrically connected to the resistor R24, the capacitor C39, and one end of the thermistor R28, respectively; the other end of the thermistor R28 and the capacitor C39 are commonly grounded; the other end of the resistor R24 ​​is electrically connected to the negative power supply terminal of the power supply; the negative phase input terminal of the amplifier U8 is electrically connected to the output terminal of the amplifier U8 and one end of the resistor R26; the other end of the resistor R26 is electrically connected to the input terminal of the feedback control chip U7 and the capacitor C37, respectively; the power supply terminal of the amplifier U8 is electrically connected to the positive power supply terminal of the power supply and one end of the capacitor C35, respectively; the capacitor C35, the capacitor C37, and the ground terminal of the amplifier U8 are grounded.

10. The spatial spectrum interference tester according to claim 9, wherein: The cooling control module (7) includes a resistor R35, a resistor R39, a transistor Q5 and a connection terminal row J6, one end of the resistor R35 is electrically connected to the output end of the feedback control chip U7, the other end of the resistor R35 is electrically connected to the resistor R39 and the base of the transistor Q5 respectively, the emitter of the transistor Q5 and the other end of the resistor R39 are commonly grounded, the other end of the transistor Q5 is electrically connected to one end of the connection terminal row J6, the other end of the connection terminal row J6 is connected to an external DC power supply, and the connection terminal row J6 is electrically connected to the fan.

Images