Detection device of DMX signal line

Abstract

The utility model discloses a DMX signal line detection device, and relates to the technical field of line detection, in particular to a DMX signal line detection device, which comprises a detection host and a detection slave. The detection host comprises a first radio frequency transceiver module and a first line detection module; the detection slave comprises a second radio frequency transceiver module and a second line detection module; the first line detection module is connected with a signal source, one end of a DMX signal line to be detected is connected with the first line detection module, and the other end is connected with the second line detection module; the detection host and the detection slave can be in long-distance communication connection through the first radio frequency transceiver module and the second radio frequency transceiver module respectively, so that the detection distance can be effectively expanded, the detection of the installed long-distance DMX rays is realized, and the maintenance difficulty of workers is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of line detection, in particular to a detection device for a DMX signal line. Background Art

[0002] The DMX512 protocol is a data dimming protocol proposed by the American Stage Lighting Association. It provides a protocol standard for communication between lighting controllers and lighting equipment. It can be used to digitally control dimmers and other control equipment in places such as stages, theaters, and studios. It is suitable for one-to-multipoint master-slave control systems. Its interconnection form adopts a multi-point bus structure, and there is no problem of information path blocking. Its connection is simple and has high reliability.

[0003] The DMX512 communication network is a parallel network. All nodes on the same line are connected in parallel through the communication interface circuit. However, when the interface circuit of a node is short-circuited, or a section of the line is short-circuited, the communication of the entire DMX512 line will be paralyzed. Since the nodes on the line are connected in parallel, a short circuit in any node is equivalent, so it is difficult to troubleshoot.

[0004] Especially for large occasions, long-distance DMX lines need to be installed, and the detection equipment in the existing technology cannot meet the needs of long-distance detection. Utility Model Content

[0005] The purpose of the utility model is to avoid the shortcomings of the prior art and provide a technology that can realize long-distance DMX signal line detection.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A DMX signal line detection device comprises: a detection host and a detection slave; the detection host comprises a first radio frequency transceiver module and a first line detection module; the detection slave comprises a second radio frequency transceiver module and a second line detection module; the first line detection module is connected to a signal source, and one end of a DMX signal line to be detected is connected to the first line detection module, and the other end is connected to the second line detection module; the detection host and the detection slave are respectively connected to each other through the first radio frequency transceiver module and the second radio frequency transceiver module.

[0008] Specifically, the first radio frequency transceiver module and the second radio frequency transceiver module both use a radio frequency chip of model LLCC68.

[0009] In the above, the first line detection module also includes a first line switch, a second line switch and a third line switch, which are respectively connected to each sub-line at one end of the DMX signal line; the second line detection module also includes a fourth line switch, a fifth line switch and a sixth line switch, which are respectively connected to each sub-line at the other end of the DMX signal line.

[0010] More specifically, the detection host also includes a first control module, which is respectively connected to the first RF transceiver module and the first line detection module; the detection slave also includes a second control module, which is respectively connected to the second RF transceiver module and the second line detection module.

[0011] More specifically, the first line switch, the second line switch, the third line switch, the fourth line switch, the fifth line switch and the sixth line switch all use relay switches; the second line detection is also provided with a working prompt light, which is respectively connected to the fourth line switch, the fifth line switch and the sixth line switch.

[0012] In another specific embodiment, the detection host also includes a first power supply module, which is respectively connected to the first control module, the first RF transceiver module and the first line detection module; the detection slave also includes a second power supply module, which is respectively connected to the second control module, the second RF transceiver module and the second line detection module.

[0013] More specifically, the first power module and the second power module respectively include a corresponding main power supply circuit and a battery power supply circuit, and the main power supply circuit is used to supply power to the battery power supply circuit.

[0014] In another specific embodiment, the main power supply circuit is connected to a Type-C interface, and the Type-C interface is used to connect to an external power supply.

[0015] In another specific embodiment, the battery power supply circuit further includes: a switch key, a first transistor, a first MOS transistor and a boost converter; the main power supply circuit includes a rechargeable battery, and the input end of the boost converter is connected to the rechargeable battery;

[0016] One side of the switch key is connected to the positive terminal of the rechargeable battery, and the other side is connected to the base of the first transistor; the collector of the first transistor is respectively connected to the gate and source of the first MOS tube; the drain of the first MOS tube is connected to the boost converter, and the source is connected to the positive terminal of the rechargeable battery.

[0017] More specifically, the battery power supply circuit further includes a second triode; the base of the second triode is connected to the corresponding first control module or the second control module, the collector is connected to the gate of the first MOS tube, and the emitter is grounded.

[0018] The beneficial effects achieved by the utility model are as follows: a DMX signal line detection device comprises: a detection host and a detection slave; the detection host comprises a first radio frequency transceiver module and a first line detection module; the detection slave comprises a second radio frequency transceiver module and a second line detection module; the first line detection module is connected to a signal source, and one end of the DMX signal line to be detected is connected to the first line detection module, and the other end is connected to the second line detection module; the detection host and the detection slave can respectively perform long-distance communication connection through the first radio frequency transceiver module and the second radio frequency transceiver module, which can effectively expand the detection distance, realize the detection of the installed long-distance DMX line, and greatly reduce the difficulty of maintenance by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic block diagram of a DMX signal line detection device according to an embodiment of the utility model;

[0021] Figure 2 This is a circuit principle diagram of a main power supply circuit of a DMX signal line detection device according to an embodiment of the utility model;

[0022] Figure 3 This is a circuit principle diagram of a battery power supply circuit of a DMX signal line detection device according to an embodiment of the utility model;

[0023] Figure 4 It is a circuit principle diagram of a first radio frequency transceiver module and a second radio frequency transceiver module of a DMX signal line detection device according to an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the circuit principle of a first line detection module of a DMX signal line detection device according to an embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the circuit principle of a second line detection module of a DMX signal line detection device according to an embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the circuit principle of a first control module of a DMX signal line detection device according to an embodiment of the utility model;

[0027] Figure 8This is a schematic diagram of the circuit principle of a second control module of a DMX signal line detection device according to an embodiment of the utility model;

[0028] Fig. 9 The present invention is a schematic diagram of the circuit principle of a display device of a DMX signal line detection device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solution of the utility model through the implementation method. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1

[0031] One of the implementation methods of a DMX signal line detection device of the utility model is as follows: Figures 1 to 9 As shown, it includes: a detection host and a detection slave; the detection host includes a first radio frequency transceiver module, a first line detection module, a first control module and a first power module; the detection slave includes a second radio frequency transceiver module, a second line detection module, a second control module and a second power module. The first power module is used to supply power to the first radio frequency transceiver module, the first line detection module and the first control module; the second power module is used to supply power to the second radio frequency transceiver module, the second line detection module and the second control module.

[0032] The first line detection module is connected to a signal source, and one end of the DMX signal line to be detected is connected to the first line detection module, and the other end is connected to the second line detection module; the detection host and the detection slave are respectively connected to each other through the first RF transceiver module and the second RF transceiver module for communication; it can be used to detect whether the DMX512 signal output by the signal source is normal, and whether the connected DMX signal line can work normally. Among them, the first RF transceiver module and the second RF transceiver module both use the RF chip U4 (E220-400M22S) of LLCC68.

[0033] Specifically, the first power module and the second power module respectively include a corresponding main power supply circuit and a battery power supply circuit, and the main power supply circuit is used to power the battery power supply circuit. The main power supply circuit is connected to a Type-C interface, and the Type-C interface is used to connect an external power supply. And the main power supply circuit also includes a charging chip U6, a linear regulator U7 and a rechargeable battery BAT1.

[0034] In this embodiment, the main power supply circuit is connected to the external power supply VBUS through the Type-C interface, directly inputs a 5V voltage, and then divides the VBUS voltage through resistors R40 and R43 to obtain a VBUS_ADC signal, wherein the VBUS_ADC signal is connected to the corresponding first control module or the second control module.

[0035] The first control module and the second control module respectively include a single-chip microcomputer U2 (AT32F415CBT7) and a single-chip microcomputer U9 (AT32F415CBT7). Both the first single-chip microcomputer U2 and the second single-chip microcomputer U9 use an ARM32-bit Cortex-M4 microcontroller with a maximum frequency of 150Mhz and a built-in 256K flash memory. The first single-chip microcomputer U2 and the second single-chip microcomputer U9 detect the corresponding VBUS_ADC as high / low level to determine whether an external power supply is connected, thereby determining whether to charge the battery.

[0036] The charging chip U6 mainly uses a 2A synchronous step-down lithium battery charging chip (SLM6500). The external power supply VBUS provided by USB1 of the Type-C interface (Type-C 16P US) is filtered by capacitors C11 and C15 and then connected to the input end of the charging chip U6.

[0037] Among them, the functions of each pin and peripheral circuit of the charging chip U6 are as follows:

[0038] Resistor R41 is a charging current detection resistor. The two ends of resistor R41 are connected to the battery voltage detection terminal pin 6 (BAT) and the output current detection terminal pin 7 (VS) of the charging chip U6. Its charging current I = 0.1V / R41, and the charging current here is 1A. At the same time, the battery voltage detection terminal pin 6 (BAT) is connected to the positive terminal BATIN of the rechargeable battery BAT1 to power the rechargeable battery BAT1. Inductor L2 acts as an energy storage. Pin 5 (TS) of the charging chip U6 is the enable control pin, and resistor R44 is a current limiting resistor. Pin 4 (NSTDBY) of the charging chip U6 is the battery charging completion indicator terminal, which is connected to a green indicator light. Pin 3 (NCHRG) of the charging chip U6 is the charging status indicator terminal, which is connected to a red indicator light.

[0039] Rechargeable battery BAT1 (3.7V / 600MAh), the voltage output by the rechargeable battery BAT1 is boosted by the battery power supply circuit, and the boosted voltage can obtain a 5V voltage (BATIN) for output. The voltage BATIN is divided by resistors R39 and R42 to obtain the BATIN_ADC signal, where BATIN_ADC is connected to the corresponding first microcontroller U2 and second microcontroller U9. The VDD_5V voltage obtained by the voltage BATIN output by the external power supply VBUS or the rechargeable battery boost is filtered by capacitors C20 and C21, and then input to the linear regulator U7 (RT9013-33GB), converting 5V into 3.3V, and supplying power to the next stage. Among them, the linear regulator U7 is a high-performance linear regulator with an output current capacity of 500mA. The capacitors C23 and C22 connected to the linear regulator U7 are used for filtering and energy storage, and then through the voltage regulator diode Z1 (BZT52B3V3), a stable 3.3V voltage can be output to protect subsequent circuits from overvoltage.

[0040] More specifically, the battery power supply circuit also includes: a switch key K1, a first transistor Q7, a first MOS transistor Q5, a boost converter U5 (SY7069ADC) and a second transistor Q6; the input end of the boost converter U5 is connected to the rechargeable battery BAT1. One side of the switch key K1 is connected to the positive terminal BATIN of the rechargeable battery BAT1, and the other side is connected to the base of the first transistor Q7; the collector of the first transistor Q7 is respectively connected to the gate and source of the first MOS transistor Q5; the drain of the first MOS transistor Q5 is connected to the boost converter, and the source is connected to the positive terminal BATIN of the rechargeable battery BAT1; the base of the second transistor Q6 is connected to the corresponding first control module or the second control module, the collector of the second transistor Q6 is connected to the gate of the first MOS transistor Q5, and the emitter of the second transistor Q6 is grounded.

[0041] When the switch K1 is pressed, the voltage BATIN of the rechargeable battery BAT1 is input to the resistor R29 and then transmitted to the first transistor Q7, so that the first transistor is turned on, and then the voltage is transmitted to the gate of the first MOS tube Q5, so that the first MOS tube Q5 is turned on, so that the voltage BATIN of the rechargeable battery BAT1 is transmitted to BOOST_EN. The BOOST_EN signal is connected to the pin 6 (EN) of a high-efficiency synchronous boost converter U5, which is an enable pin for controlling the operation of the boost converter U5, so that the voltage BATIN (3.7V) of the rechargeable battery BAT1 passes through the capacitor C19, the capacitor C12 and the capacitor C14, and the capacitor C19; the capacitor C12 and the capacitor C14 play a filtering role, which can eliminate clutter when supplying power to the boost converter U5 for the subsequent stage, and the inductor L1 plays a role in energy storage. Voltage feedback is performed through pin 1 (FB) and pin 4 (OUT) inside the boost converter U5, and the output voltage is set to VOUT=1.2*(1+R35 / R38). After filtering through capacitors C17 and C18, 5V is obtained to supply the corresponding first microcontroller U2, second microcontroller U9 and other circuits.

[0042] When the first single-chip microcomputer U2 and the second single-chip microcomputer U9 are working normally, the first single-chip microcomputer U2 and the second single-chip microcomputer U9 respectively output P_CTL signals through corresponding GPIO ports, wherein the P_CTL signal is a power control signal. Because it is impossible to keep pressing the switch key K1, the second transistor Q6 is turned on by the P_CTL signal, and then the first MOS tube Q5 is turned on, so the voltage BATIN of the rechargeable battery BAT1 is also continuously transmitted to BOOST_EN, and at this time, there is no need to keep pressing the switch key K1.

[0043] The RF chip U4 corresponding to the first RF transceiver module and the second RF transceiver module mainly communicates and transmits data with the corresponding pins 16, 17, 15, and 14 of the first microcontroller U2 or the second microcontroller U9 through the corresponding SPI pins (pin 16_SPI 1_MI SO, pin 17_SPI 1_MOSI, pin 18_SPI 1_SCK, pin 19_SPI 1_NSS). The first microcontroller U2 or the second microcontroller U9 controls the corresponding RF chip U4 pin 6 RF switch receiving end and pin 7 RF switch transmitting end through the corresponding GPIO port pins 20 and 21. Then, the RF chip U4 pin 15 reset end and pin 14 status end are controlled through the corresponding GPIO port pins 18 and 19. This realizes the output of signals through the first RF transceiver module or the second RF transceiver module, expands the transmission range, and greatly facilitates the staff to detect the DMX signal line.

[0044] More specifically, the first line detection module includes a first detection chip U1 (SN75176B), a first line switch J1, a second line switch J2 and a third line switch J3; the first line switch J1, the second line switch J2 and the third line switch J3 are respectively connected to each sub-line at one end of the DMX signal line; the second line detection module includes a second detection U8 (SN75176B), a fourth line switch J4, a fifth line switch J5 and a sixth line switch J6; the fourth line switch J4, the fifth line switch J5 and the sixth line switch J6 are respectively connected to each sub-line at the other end of the DMX signal line. Among them, the first detection chip U1 and the second detection chip U8 both use differential bus transceivers; the first line switch J1, the second line switch J2, the third line switch J3, the fourth line switch J4, the fifth line switch J5 and the sixth line switch J6 all use relay switches (G5NB-1A-E-DC5V). The second line detection is also provided with a working prompt light LED1, and the working prompt light LED1 is respectively connected to the fourth line switch J4, the fifth line switch J5 and the sixth line switch J6.

[0045] The first detection chip U1 communicates with the first microcontroller U2 pin 31 (USART_RX) and pin 30 (USART_TX) via the serial port USART. The first microcontroller U2 pin 29 (RS485_CON) is connected to the RE and DE of the first detection chip U1 to select the sending and receiving mode. When the output signal of the external controller is connected to the DMX_TEST_OUT1 socket, it can detect whether the DMX512 signal output by the controller is normal.

[0046] The second detection chip U8 is a differential bus transceiver. The second detection chip U8 uses the serial port USART to communicate with the second microcontroller U9 pin 31 (USART1_RX) and pin 30 (USART1_TX). The second microcontroller U9 pin 29 (RS485_CON1) is connected to the RE and DE of the second detection chip U8 to select the sending and receiving mode. When the external controller outputs the DMX512 signal through a long-distance line and connects it to the DMX_TEST_OUT2 socket, it can detect whether the DMX512 signal output by the controller is normal after passing through the long-distance wire.

[0047] More specifically, in the first control module, the external power supply VBUS or the rechargeable battery BAT1 of the corresponding USB Type-C 16P USB interface is stepped down to provide a 3.3V voltage to the first single-chip microcomputer U2. The first single-chip microcomputer U2 mainly communicates with the corresponding RF chip U4 through the SPI interface, so that the detection equipment can expand the detection range, with a maximum distance of 5500m. Then, the voltage of the external power supply VBUS and the rechargeable battery BAT1 is detected respectively through the ADC port pins 10 and 11, so as to determine whether there is external power input and whether to charge. The first single-chip microcomputer U2 communicates with the first detection chip U1 through the serial port to detect whether the DMX512 signal output by the external controller is normal. Then, the conduction and disconnection of the third line switch J3, the second line switch J2 and the first line switch J1 are controlled respectively through the GPIO port pins 42, 36 and 41 to detect whether the DMX signal line is conductive. Among them, the GPIO port pins 35, 32 and 33 correspond to the sending and receiving of the A, B, and GND line signals of the DMX signal line respectively.

[0048] In the second control module, the corresponding USB Type-C 16P USB interface external power supply VBUS or rechargeable battery BAT1 is stepped down to provide 3.3V voltage to the second single-chip microcomputer U9. The second single-chip microcomputer U9 mainly communicates with the corresponding RF chip U4 through the SPI interface, so that the detection equipment can expand the detection range, with a maximum distance of 5500m. Then, the voltage of the external power supply VBUS and the rechargeable battery BAT1 is detected through the ADC port pins 10 and 11 respectively, so as to determine whether there is external power input and whether to charge. The second single-chip microcomputer U9 communicates with the second detection chip U8 through the serial port to detect whether the DMX512 signal output by the external controller through the wire is normal. Then, the sixth line switch J6, the fifth line switch J5 and the fourth line switch J4 are respectively controlled to be turned on and off through the GPIO port pins 42, 36 and 41, so as to conduct the A, B, GND signals output by the detection host to each other.

[0049] If the DMX512 signal output by the signal source is normal, but the DMX signal line is abnormal after a long distance, then the DMX signal line should be tested. Connect the beginning of the DMX signal line to the DMX_TEST_OUT1 socket, and the end of the DMX signal line to the DMX_TEST_OUT2 socket.

[0050] When used specifically:

[0051] (1) When relay switches J3, J2, J1 and J6 are turned on, and relay switches J5 and J4 are not turned on, the detection host sends a pulse from the port of relay switch J3. If LED1 flashes, line A is turned on. If J2 and J1 do not detect any pulse, then signal line A is not short-circuited with signal line B and signal line GND.

[0052] (2) When relay switches J3, J2, J1, and J5 are turned on, and relay switches J6 and J4 are not turned on, the detection host sends a pulse from J2. If LED1 flashes, line B is turned on. If J3 and J1 do not detect a pulse, then signal line B is not short-circuited with signal line A and signal line GND. Therefore, it is determined that the three lines A, B, and GND are not short-circuited.

[0053] (3) When all maintenance electrical switches are turned on, the detection host sends a pulse from J3. If LED1 flashes, line A is turned on. If J2 and J1 do not detect a pulse, then the B signal line and the GND signal line are open, and the wire may be broken in the middle. If J2 and J1 detect a pulse, then the B signal line and the GND signal line are normal. And so on.

[0054] The corresponding working principle is as follows:

[0055] 1. The first single-chip microcomputer U2 outputs a high level through GPIO port pin 42 (A_CTL), pin 36 (B_CTL), and pin 41 (GND_CTL) to turn on transistors Q4, Q3, and Q2, so that relay switches J3, J2, and J1 work, and the signal end is closed. Then the first single-chip microcomputer U2 sends a pulse through GPIO port pin 35 (SA), which will be output through the A_OUT signal. At the same time, the second single-chip microcomputer U9 outputs a high level through GPIO port pin 42 (A_CTL1) to turn on transistor Q10 (SS8050), so that relay switch J6 (G5NB-1A-E-DC5V) works, and the signal end is closed. Then the pulse at this time flows through the signal end of relay switch J6, LED1 will flash, and then line A is turned on. If it is detected that there is no pulse on pin 33 (SB) and pin 32 (SG) of the first single-chip computer U2 at this time, then the A line, the B line and the GND line are not short-circuited.

[0056] 2. The first single-chip microcomputer U2 outputs a high level through GPIO port pin 42 (A_CTL), pin 36 (B_CTL), and pin 41 (GND_CTL) to turn on transistors Q4, Q3, and Q2 (SS8050), so that relay switches J3, J2, and J1 (G5NB-1A-E-DC5V) work and the signal end is closed. Then the first single-chip microcomputer U2 sends a pulse through GPIO port pin 33 (SB), which will be output through the B_OUT signal. At the same time, the second single-chip microcomputer U9 outputs a high level through GPIO port pin 36 (B_CTL1) to turn on transistor Q9 (SS8050), so that relay switch J5 (G5NB-1A-E-DC5V) works and the signal end is closed. Then the pulse at this time flows through the signal end of relay switch J5, LED1 will flash, and then line B is turned on. If it is detected that there is no pulse on pin 35 (SA) and pin 32 (SG) of the first single-chip computer U2, then the B line is not short-circuited with the A line and the GND line. Then it can be determined that the A, B, and GND lines are not short-circuited with each other.

[0057] 3. The first single-chip microcomputer U2 outputs a high level through GPIO port pin 42 (A_CTL), pin 36 (B_CTL), and pin 41 (GND_CTL) to turn on transistors Q4, Q3, and Q2 (SS8050), so that the relay switches J3, J2, and J1 (G5NB-1A-E-DC5V) work and the signal end is closed. Then the first single-chip microcomputer U2 sends a pulse through GPIO port pin 35 (SA), which will be output through the A_OUT signal. At the same time, the second single-chip microcomputer U9 outputs a high level through GPIO port pin 42 (A_CTL1), pin 36 (B_CTL1), and pin 41 (GND_CTL1) to turn on transistors Q10, Q9, and Q8 (SS8050), so that the relay switches J6, J5, and J4 (G5NB-1A-E-DC5V) work and the signal end is closed. Then the pulse at this time flows through the signal end of relay switch J6, J5, and J4. LED1 will flicker, and line A is conducting. If there is no pulse at pin 33 (SB) and pin 32 (SG) of the first single-chip microcomputer U2, then the B signal line and the GND signal line are open, and the wire may be broken. If there is a pulse at pin 33 (SB) and pin 32 (SG) of the first single-chip microcomputer U2, then the B signal line and the GND signal line are normal.

[0058] Furthermore, the detection host is also connected to a display and a switch button.

[0059] In this embodiment, the display uses a 1.69-inch TFT display screen, and uses the two-wire SPI port pins 28 and 26 of the first single-chip microcomputer U2 to control the LCD_MOSI data signal and LCD_SCK clock signal of the display respectively, and then uses the GPIO port to control the chip select signal LCD_CS, command signal LCD_WR_RS, reset signal LCD_RESET and backlight signal LCD_LED of the display. The first single-chip microcomputer U2 controls two switching buttons through GPIO to realize the signal sending and receiving control function of the switching button K3 and the switching button K2. It realizes that the information of the DMX512 signal can be displayed, which is convenient for checking whether the DMX512 signal is normal or whether the DMX512 signal line is conductive; the signal sending and receiving operations can be controlled through the two switching buttons.

[0060] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A DMX signal line detection device, characterized in that: include: Detection host and detection slave; The detection host includes a first radio frequency transceiver module and a first line detection module; The detection slave includes a second radio frequency transceiver module and a second line detection module; The first line detection module is connected to a signal source, and one end of the DMX signal line to be detected is connected to the first line detection module, and the other end is connected to the second line detection module; The detection host and the detection slave are communicatively connected via the first radio frequency transceiver module and the second radio frequency transceiver module respectively.

2. A DMX signal line detection device according to claim 1, characterized in that: The first RF transceiver module and the second RF transceiver module both use a RF chip of model LLCC68.

3. A DMX signal line detection device according to claim 1 or 2, characterized in that: The first line detection module further includes a first line switch, a second line switch and a third line switch, which are respectively connected to each sub-line at one end of the DMX signal line; The second line detection module further includes a fourth line switch, a fifth line switch and a sixth line switch, which are respectively connected to each sub-line at the other end of the DMX signal line.

4. A DMX signal line detection device according to claim 3, characterized in that: The detection host further includes a first control module, which is connected to the first RF transceiver module and the first line detection module respectively; The detection slave further includes a second control module, and the second control module is connected to the second RF transceiver module and the second line detection module respectively.

5. A DMX signal line detection device according to claim 4, characterized in that: The first line switch, the second line switch, the third line switch, the fourth line switch, the fifth line switch and the sixth line switch are all relay switches; The second line detection is also provided with a working indication light, and the working indication light is respectively connected to the fourth line switch, the fifth line switch and the sixth line switch.

6. A DMX signal line detection device according to claim 4, characterized in that: The detection host further includes a first power supply module, which is respectively connected to the first control module, the first RF transceiver module and the first line detection module; The detection slave also includes a second power supply module, and the second power supply module is respectively connected to the second control module, the second RF transceiver module and the second line detection module.

7. A DMX signal line detection device according to claim 6, characterized in that: The first power module and the second power module respectively include a corresponding main power supply circuit and a battery power supply circuit, and the main power supply circuit is used to supply power to the battery power supply circuit.

8. A DMX signal line detection device according to claim 7, characterized in that: The main power supply circuit is connected to a Type-C interface, and the Type-C interface is used to connect to an external power supply.

9. A DMX signal line detection device according to claim 7, characterized in that: The battery power supply circuit also includes: a switch key, a first triode, a first MOS tube and a boost converter; The main power supply circuit includes a rechargeable battery, and the input end of the boost converter is connected to the rechargeable battery; One side of the switch key is connected to the positive terminal of the rechargeable battery, and the other side is connected to the base of the first transistor; The collector of the first triode is respectively connected to the gate and source of the first MOS tube; The drain of the first MOS tube is connected to the boost converter, and the source is connected to the positive terminal of the rechargeable battery.

10. A DMX signal line detection device according to claim 9, characterized in that: The battery power supply circuit also includes a second triode; The base of the second transistor is connected to the corresponding first control module or second control module, the collector is connected to the gate of the first MOS transistor, and the emitter is grounded.

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