Portable transmitter dummy load

Abstract

The utility model discloses a portable transmitter dummy load and a working method thereof, the portable transmitter dummy load comprises a resistor module, a capacitor module, a switching module, a test module, a ventilation module and a cabinet module, the resistor module, the capacitor module, the switching module and the ventilation module are installed in the cabinet module; the resistor module, the capacitor module and the test module are connected in parallel with the conversion module; the resistance module is used for absorbing electric energy output by the transmitter; the capacitor module plays a role in matching and filtering, and simulates a real use environment of the transducer; the conversion module is connected with the transmitter through the case module, so that 36 paths of power amplifier outputs of the transmitter can be switched to the resistor module and the capacitor module; the test module is used for checking the integrity of the dummy load and monitoring output parameters of 36 paths of power amplifiers of the transmitter; and the ventilation module is used for cooling the resistor module. According to the utility model, the transmitter can continuously transmit when being connected with the dummy load, so that the transmitter can be better tested and maintained.

Description

Technical Field

[0001] The utility model relates to an auxiliary tool for a transmitter, in particular to a portable transmitter dummy load. Technical Background

[0002] Transmitters are widely used in the military marine field, mainly in bow integrated sonar transmission systems. The transmitter receives the transmission command, generates signals and forms beams according to the command requirements, and amplifies the power of the generated signal. The amplified electrical signal excites the corresponding transducer in the transmitting array to radiate sound waves into the water, and the receiver receives the echo signal of the underwater target for information collection and target detection and identification.

[0003] According to technical requirements, the transmitter is strictly prohibited from transmitting without a load, so as to avoid empty transmission and damage to the equipment. Except for the lake test and navigation test, the transmitter is connected to the transmitting array (to meet the water immersion depth requirements), and other tests must be connected to a dummy load before active transmission. The transmitter of a certain project currently has no dummy load. The dummy load of other projects is borrowed for indoor and outdoor field tests. Two units need to be connected to work simultaneously. The dummy load provides 36 loads, and the volume of a single unit is 580mm*580mm*1200mm, and the weight is 120Kg / unit. The dummy load is expensive and inconvenient to carry, and the transportation cost is high during field tests.

[0004] Since the diameter of the boat mouth is about 600mm, the dummy load cannot be carried inside the boat and cannot meet the needs of mooring tests and transmitter fault repair. Therefore, it is urgent and necessary to design a portable dummy load for a certain type of transmitter. Utility Model Content

[0005] In order to solve the defects and shortcomings in the above-mentioned prior art, the utility model provides a portable transmitter dummy load which only needs to be connected to one dummy load to achieve the purpose of checking 36 transmission channels of the transmitter, has the characteristics of small size, light weight, easy to carry and can be used in a boat, improves the convenience and work efficiency of the debugging test, enables the transmitter to have the advantage of continuous transmission, can shorten the transmitter troubleshooting time, reduce the risk of transmitter damage, and improve the reliability of the equipment. It is easy to carry and easy to operate.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A portable transmitter dummy load comprises a resistance module, a capacitance module, a switching module, a testing module, a ventilation module and a chassis module, wherein the resistance module, the capacitance module, the conversion module and the ventilation module are installed in the chassis module, and the resistance module, the capacitance module and the testing module are connected in parallel to the conversion module;

[0008] The resistance module is used to absorb the electric energy output by the transmitter;

[0009] The capacitor module plays a matching and filtering role, simulating the actual use environment of the transducer;

[0010] The conversion module is connected to the transmitter via the chassis module, so that the 36-channel power amplifier output of the transmitter can be transferred to the resistance module and the capacitor module;

[0011] The test module is used to check the integrity of the dummy load and monitor the output parameters of the 36-channel power amplifier of the transmitter;

[0012] The ventilation module is used to dissipate heat for the resistance module.

[0013] Preferably, the chassis module consists of an input connector, a frame, an upper cover, a bottom plate, a front panel, a rear panel, a left panel, a right panel, a handle, a silent wheel, a support block, and a pull rod. The handle is installed on the upper cover, the support block and the silent wheel are installed on the bottom plate, the pull rod is installed on the rear panel, and the input connector is installed on the upper cover.

[0014] The chassis module is designed with silent wheels, pull rods, handles, etc., which are easy to carry and truly make the dummy load portable.

[0015] Preferably, the resistance module is composed of a plurality of resistors, which are installed on the lower layer of the chassis module.

[0016] Preferably, the capacitor module is composed of a plurality of capacitors, a plurality of connectors and a plurality of printed circuit boards, and is installed on the upper right side of the chassis module, and the capacitors and connectors are integrated on the printed circuit board.

[0017] Preferably, the conversion module consists of a control handle, a switch body, gears and a gear support frame, which is installed on the upper left side of the chassis module. The control handle passes through the upper cover plate outside the chassis module. The conversion module is connected to the transmitter through the input connector on the chassis module. By switching the control handle three times, the 36-channel power amplifier output of the transmitter can be transferred to the resistance module and the capacitor module.

[0018] Preferably, the test module is composed of a plurality of test terminals, which are installed on the front panel. The resistors, capacitors and test terminals are connected in parallel to the conversion module. The test module is used to check the integrity of the dummy load and monitor the output parameters of the 36-channel power amplifier of the transmitter.

[0019] Preferably, the control handle is located at the upper left of the upper cover after passing through the upper cover, and on the left side of the control handle are two input connectors for connecting to the transmitter, and the test terminal is arranged on the front panel.

[0020] Preferably, the ventilation module is composed of a plastic fan and a power supply socket, which is installed on the left side plate serving as the air inlet plate. When the dummy load works continuously, the ventilation module dissipates heat from the resistor, thereby protecting the resistor.

[0021] A working method of a portable transmitter dummy load comprises the following steps: before using the dummy load, a multimeter and a capacitance meter are used to connect the test terminals on the front panel of the dummy load to check whether the resistance value of the resistor and the capacitance value of the capacitor are within a qualified range; after ensuring that the dummy load is normal, firstly connect transmitters X7 and X8 to dummy loads X1 and X2 respectively through cables, then connect transmitter X9 to a PC, and use an oscilloscope to connect the test terminals on the front panel in sequence; the PC controls the transmitter to work, and checks the output frequency, power and pulse parameters of 36 channels of the transmitter three times by switching the control handle to A / B / C gears, so as to locate the fault of the transmitter; the transmitter can only work for a single transmission when connected to a transmitting array, but can work for continuous transmission when connected to a dummy load, so as to better complete the test and maintenance of the transmitter.

[0022] The beneficial effects of the utility model are as follows:

[0023] The utility model fills the gap of a certain project without a dummy load. At any stage, the transmitter only needs to connect one dummy load to achieve the purpose of checking the 36 transmission channels of the transmitter. The transmitter has 36 transmission power amplifiers. Each time it transmits, 12 adjacent channels form a directional transmission beam to drive 12 transmission array transducers or loads. According to this feature, the portable dummy load is integrated with a 12-channel load design. The dimensions are 396mm*266mm*645mm and the weight is 19.8Kg. The dummy load has the characteristics of small size, light weight, easy to carry and can be used in the boat, which improves the convenience and work efficiency of the debugging test. The portable dummy load enables the transmitter to have the advantage of continuous transmission, which can shorten the transmitter troubleshooting time, reduce the risk of transmitter damage, and improve equipment reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] Figure 1 This is a schematic diagram of the overall structure of the utility model from one angle;

[0026] Figure 2 This is a schematic diagram of the overall structure of the utility model from another angle;

[0027] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0028] Figure 4 It is the wiring diagram of the utility model;

[0029] In the figure, 1. resistance module, 2. capacitance module, 3. adapter module, 4. test module, 5. ventilation module, 6. chassis module, 7. resistor, 8. capacitor, 9. connector, 10. printed circuit board, 11. control handle, 12. switch body, 13. terminal block, 14. test terminal, 15. plastic fan, 16. power socket, 17. input connector, 18. frame, 19. handle, 20. silent wheel, 21. support block, 22. pull rod, 23. upper cover, 24. front panel, 25. left panel, 26. right panel, 27. bottom plate, 28. rear panel. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the utility model, the specific implementation methods of the utility model are now described in detail with reference to the accompanying drawings.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model discloses a portable transmitter dummy load, which mainly comprises a resistance module 1, a capacitance module 2, a switching module 3, a testing module 4, a ventilation module 5 and a chassis module 6.

[0032] The 12 pieces of 7 resistors of the resistor module 1 are installed in 3 layers vertically, and 4 resistors in each layer are fixed to the frame with hexagon socket bolts with a spacing of 20mm. The resistors, capacitors and test terminals are connected in parallel to the conversion module, and the resistors mainly absorb the electrical energy output by the transmitter.

[0033] The 12 capacitors 8 and 9 connectors 9 of the capacitor module 2 are integrated on three printed circuit boards 10, and the three printed circuit boards are fixed on the upper cover plate 23 using 12 copper pillars with a height of 60 mm. The resistors, capacitors and test terminals are connected in parallel to the conversion module, and the capacitors mainly play a matching and filtering role to simulate the real use environment of the transducer.

[0034] The conversion module 3 is mainly composed of a control handle 11, 3 sets of switch bodies 12, 2 gears and a gear support frame. There are 24 wiring terminals 13 on the switch body. The conversion module is divided into three gears: A / B / C. By switching the control handle, the 24 wiring terminals of one set of switch bodies are turned on, and the other 48 wiring terminals are turned off, and so on. The gear support frame of the conversion module is fixed to the upper cover with bolts. The 24 wiring terminals of the conversion module are connected to the transmitter X7 and X8 through the connectors X1 and X2 on the chassis. By switching the control handle three times, the 36-channel power amplifier output of the transmitter can be transferred to the resistor module and the capacitor module.

[0035] The test module 4 is mainly composed of 24 test terminals 14, 2 test terminals (red and black) form 1 group, a total of 12 groups, installed on the front panel 24. The resistor, capacitor and test terminal are connected in parallel to the conversion module, and the test module can be used to check the integrity of the dummy load and monitor the output parameters of the 36-channel power amplifier of the transmitter.

[0036] The ventilation module 5 is mainly composed of two plastic fans 15 and one 220V power socket 16. The plastic fans are fixed to the left side plate 25 as the air inlet plate with bolts and nuts, and the power socket is installed at the lower left corner of the air inlet plate. The wind direction of the fan is from outside to inside, and the air is discharged from the right side plate 26 on the right side of the chassis as a heat sink to dissipate heat. When the dummy load works continuously, the resistor is cooled through the ventilation module, thereby protecting the resistor.

[0037] The chassis module 6 is mainly composed of 2 input connectors 17 (X1, X2), 1 frame 18, 6 panels (upper cover 23, front panel 24, left side panel 25, right side panel 26, bottom panel 27, rear panel 28), 2 handles 19, 2 silent wheels 20, 2 support blocks 21, and 1 pull rod 22. The handle is installed on the upper cover, the support block and silent wheel are installed on the bottom panel 27, and the pull rod is installed on the rear panel 28. The chassis module is designed with silent wheels and pull rods, which is easy to carry and truly makes the dummy load portable.

[0038] Before using the dummy load, use a multimeter and a capacitance meter to connect the test terminals on the front panel of the dummy load to check that the resistance value of the resistor and the capacitance value of the capacitor are within the qualified range. After ensuring that the dummy load is normal, first connect the transmitter X7 and X8 to the dummy load X1 and X2 respectively through cables, then connect the transmitter X9 to the PC, and use an oscilloscope to connect the test terminals on the front panel in sequence. The PC controls the operation of the transmitter. By switching the control handle A / B / C, the transmitter's 36-channel output frequency, power, pulse and other parameters are checked three times to locate the transmitter fault. The transmitter can only transmit once when connected to the transmitting array, but it can transmit continuously when connected to the dummy load, which can better complete the testing and maintenance of the transmitter.

[0039] The portable dummy load of the utility model is convenient to carry and convenient to connect to a transmitter.

[0040] The portable dummy load of the utility model is mainly used for testing and maintenance of transmitters, and is an effective and simple test supporting tool. It is strictly forbidden for the transmitter to transmit without a load. The transmitter must be connected to a transmitting array (meeting the water immersion depth requirement) or a dummy load to actively transmit. Except for the lake test and the navigation test, the transmitter must be connected to the transmitting array, and other tests must be connected to a dummy load. The dummy load is an indispensable supporting equipment for indoor and outdoor field tests. Through the dummy load, testers can perform tasks such as transmitter self-test in any occasion, which can greatly reduce the workload of testers and shorten maintenance time.

[0041] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A portable transmitter dummy load, characterized in that: It includes a resistance module, a capacitance module, a switching module, a test module, a ventilation module, and a chassis module. The resistance module, the capacitance module, the conversion module, and the ventilation module are installed in the chassis module. The resistance module, the capacitance module, and the test module are connected in parallel to the conversion module. The resistance module is used to absorb the electric energy output by the transmitter; The capacitor module plays a matching and filtering role, simulating the actual use environment of the transducer; The conversion module is connected to the transmitter via the chassis module, so that the 36-channel power amplifier output of the transmitter can be transferred to the resistance module and the capacitor module; The test module is used to check the integrity of the dummy load and monitor the output parameters of the 36-channel power amplifier of the transmitter; The ventilation module is used to dissipate heat for the resistance module.

2. A portable transmitter dummy load according to claim 1, characterized in that: The chassis module consists of an input connector, a frame, an upper cover, a bottom plate, a front panel, a rear panel, a left panel, a right panel, a handle, a silent wheel, a support block, and a pull rod. The handle is installed on the upper cover, the support block and the silent wheel are installed on the bottom plate, the pull rod is installed on the rear panel, and the input connector is installed on the upper cover.

3. A portable transmitter dummy load according to claim 2, characterized in that: The resistance module is composed of a plurality of resistors and is installed on the lower layer of the chassis module.

4. A portable transmitter dummy load according to claim 3, characterized in that: The capacitor module is composed of a plurality of capacitors, a plurality of connectors and a plurality of printed circuit boards, and is installed on the upper right side of the chassis module. The capacitors and the connectors are integrated on the printed circuit boards.

5. A portable transmitter dummy load according to claim 4, characterized in that: The conversion module consists of a control handle, a switch body, gears and a gear support frame, which is installed on the upper left side of the chassis module. The control handle passes through the upper cover plate outside the chassis module. The conversion module is connected to the transmitter through the input connector on the chassis module. By switching the control handle three times, the 36-channel power amplifier output of the transmitter can be transferred to the resistance module and the capacitor module.

6. A portable transmitter dummy load according to claim 5, characterized in that: The test module is composed of a plurality of test terminals, which are installed on the front panel. The resistors, capacitors and test terminals are connected in parallel to the conversion module. The test module is used to check the integrity of the dummy load and monitor the output parameters of the 36-channel power amplifier of the transmitter.

7. A portable transmitter dummy load according to claim 6, characterized in that: The control handle is located at the upper left of the upper cover after passing through the upper cover. On the left side of the control handle are two input connectors for connecting the transmitter. The test terminal is arranged on the front panel.

8. A portable transmitter dummy load according to claim 2, characterized in that: The ventilation module is composed of a plastic fan and a power supply socket, and is installed on the left side plate serving as an air inlet plate. When the dummy load works continuously, the ventilation module dissipates heat from the resistor, thereby protecting the resistor.

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