Equipment used for power amplifier testing

Abstract

This utility model discloses a device for power amplifier testing, comprising: a device housing, a control device, and a power amplifier fixture; the device housing includes a base plate (111), a side plate (112), a front panel (113), a rear panel (114), an upper mounting plate (115), a miniature slide rail (116), a push plate and a positioning block (117), and a fixing plate and a positioning block (118); the power amplifier fixture includes: a support plate (511), a stop block (512), a clamping cylinder (513), a contoured insert assembly (514), a power plug (515), and a heavy-duty connector male terminal (516); the control device is used to control the operation of the clamping cylinder (513) and control the push plate and the positioning block (117) to slide on the miniature slide rail 116. This utility model solves the problem of messy and error-prone power amplifier testing sites, improves work efficiency, and enhances the stability and accuracy of the equipment testing process.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and in particular to a device for testing power amplifiers. Background Technology

[0002] Currently, with the improvement of people's living standards, the requirements for audio-visual systems are also increasing. A loudspeaker is a common audio output device that produces sound by causing a paper cone to vibrate due to the force exerted on a current-carrying coil in a magnetic field. In loudspeakers, the power amplifier (PA) is the core device connecting the audio signal source (such as a mobile phone, player, or mixing console) to the loudspeaker. Its main function is to amplify weak audio signals, providing sufficient power to drive the loudspeaker to vibrate and produce sound. During the production process, power amplifiers require testing many parameters and performing program upgrades. Current tooling involves manually connecting the wiring harness to the power amplifier for testing and upgrades. Power amplifiers require many load resistors when under load, and the chaotic working environment can easily lead to errors and affect testing efficiency. Therefore, a new type of equipment for power amplifier testing is needed. Utility Model Content

[0003] In view of this, one technical problem to be solved by this utility model is to provide a device for power amplifier testing.

[0004] This utility model provides a device for power amplifier testing, comprising: a device housing, a control device, and a power amplifier fixture; the device housing includes a base plate, side plates, a front panel, a rear panel, an upper mounting plate, a miniature slide rail, a push plate and a positioning block, a fixing plate and a positioning block; the fixing plate and the positioning block are used for positioning; the miniature slide rail is fixed to the upper mounting plate, and the push plate and the positioning block are slidably connected to the miniature slide rail; the power amplifier fixture includes: a support plate, a stop block, a clamping cylinder, a conformal insertion assembly, a power plug, and a heavy-duty connector. The amplifier has a male terminal; the support plate is used to support the power amplifier; the stop block and the clamping cylinder are located on the support plate to fix the power amplifier; the support plate is fixed on the push plate and the positioning block and can move toward the contour plug assembly until the contour plug assembly contacts the power amplifier; the contour plug assembly is connected to the power plug and the heavy-duty connector male terminal using wires, and the heavy-duty connector male terminal is inserted into the heavy-duty connector; the control device is used to control the operation of the clamping cylinder and control the push plate and the positioning block to slide on the miniature slide rail.

[0005] Optionally, the control device includes: a pneumatic control device; the pneumatic control device includes: a gas source filter, a three-way connector, a solenoid valve assembly, a cylinder, and a clamping plate connector; the gas source filter, the three-way connector, the solenoid valve assembly, the cylinder, and the clamping plate connector are connected by a gas pipe; the telescopic rod of the cylinder is connected to the push plate and the positioning block; pressurized gas passes through the gas source filter and enters the solenoid valve assembly through the three-way connector; by opening and closing the solenoid valve assembly, the pressurized gas is controlled to enter the cylinder, and the telescopic rod of the cylinder is controlled to extend and retract, so as to drive the push plate and the positioning block to slide on the miniature slide rail.

[0006] Optionally, the control device includes: a circuit control device; the circuit control device includes: a controller, a start switch, a stop switch, a solenoid valve, a power supply, a cooling fan, and a power socket; the clamping plate connector is connected to the clamping cylinder via an air pipe, and the solenoid valve is used to control the on / off state of the pressurized gas input into the clamping cylinder through this air pipe; the controller controls the on / off state of the solenoid valve group and the solenoid valve; wherein, by controlling the on / off state of the solenoid valve, pressurized gas is controlled to enter the clamping cylinder, and the extension and retraction of the extension rod of the clamping cylinder is controlled.

[0007] Optionally, the load connection device includes: a load resistor, a heavy-duty connector female terminal, a heavy-duty connector, a tooling end power socket, and an input end power socket.

[0008] This utility model provides a device for power amplifier testing, which solves the problems of messy testing sites and easy errors; it adopts a dual-station design, which can work simultaneously, improving work efficiency; and it improves the stability and accuracy of the equipment during the testing process. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of one embodiment of a device for performing power amplifier testing according to the present invention.

[0011] Figure 2 This is a schematic diagram of a portion of an embodiment of a device for performing power amplifier testing according to the present invention.

[0012] Figure 3 This is a schematic diagram of the device housing assembly in one embodiment of the device for performing power amplifier testing according to the present invention.

[0013] Figure 4 This is a schematic diagram of the circuit control device in one embodiment of the device for performing power amplifier testing according to the present invention.

[0014] Figure 5 This is a schematic diagram of the air path control device in one embodiment of the device for power amplifier testing according to the present invention.

[0015] Figure 6 This is a schematic diagram of a load connection device in one embodiment of a power amplifier testing device according to the present invention.

[0016] Figure 7 This is a schematic diagram of a power amplifier fixture in one embodiment of a device for power amplifier testing according to the present invention. Detailed Implementation

[0017] The present invention will now be described more fully with reference to the accompanying drawings, which illustrate exemplary embodiments of the present invention. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The technical solutions of the present invention will now be described in various aspects with reference to the figures and embodiments.

[0018] like Figure 1 and 2 As shown, this utility model provides a device for testing power amplifiers, which can be used to perform dual-station testing on power amplifier 01. The device for testing power amplifiers of this utility model includes a device housing 11, a control device, a load connection part 114, and a power amplifier tooling device 51, etc.; the control device includes a circuit control device 112, a pneumatic control part 113, etc.

[0019] like Figure 3 As shown, the equipment housing 11 includes a base plate 111, a side plate 112, a front panel 113, a rear panel 114, an upper mounting plate 115, a miniature slide rail 116, a push plate and positioning block 117, a fixing plate and positioning block 118, etc.; the fixing plate and positioning block 118 are used for positioning; the miniature slide rail 116 is fixed on the upper mounting plate 115, and the push plate and positioning block 117 are slidably connected to the miniature slide rail 116; the push plate and positioning block 117 can slide on the miniature slide rail 116.

[0020] like Figure 7As shown, the power amplifier fixture includes: a support plate 511, a stop block 512, a clamping cylinder 513, a contour insert assembly 514, a power plug 515, and a heavy-duty connector male terminal 516, etc.; the heavy-duty connector male terminal 516 can be a 108-pin heavy-duty connector male terminal, etc. The power amplifier is placed on the support plate 511 and fixed by the stop block 512 and the clamping cylinder 513. The entire support plate 511 is fixed on the push plate and the positioning block 117.

[0021] The tooling power plug is plugged into the power socket (tooling end). The tray 511 is used to support the power amplifier; the stop block 512 and the clamping cylinder 513 are located on the tray 511 to fix the power amplifier; the tray 511 is fixed on the push plate and the positioning block 117 and can move toward the contour plug assembly 514 until the contour plug assembly 514 contacts the power amplifier; the contour plug assembly 514 is connected to the power plug 515 and the heavy-duty connector male terminal 516 by wires, and the heavy-duty connector male terminal 516 is plugged into the heavy-duty connector, that is, the 108-pin heavy-duty connector male terminal is plugged into the 108-pin heavy-duty connector (female terminal).

[0022] A control device is used to control the operation of the clamping cylinder 513 and to control the sliding of the push plate and positioning block 117 on the miniature slide rail 116. The control device includes a pneumatic control unit, such as... Figure 5 As shown, the air circuit control device includes: air source filter 311, three-way connector 312, solenoid valve assembly 313, cylinder 314, clamp connector 315, etc.; the air source filter 311, three-way connector 312, solenoid valve assembly 313, cylinder 314 and clamp connector 315 are connected by air pipes; the telescopic rod of cylinder 314 is connected to push plate and positioning block 117.

[0023] Pressurized gas passes through the gas source filter 311 and enters the solenoid valve group 313 through the three-way connector 312. By controlling the opening and closing of the solenoid valve group 313, the pressurized gas enters the cylinder 314, and controls the extension and retraction of the extension rod of the cylinder 314 to drive the push plate and the positioning block 117 to slide on the miniature slide rail 116.

[0024] For example, when the air pressure of 0.6-1.0Mpa passes through the air source filter 311, it enters the solenoid valve group 313 through the three-way connector 312. By opening and closing the solenoid valve group 313, the air pressure is controlled to enter the cylinder 314, and the cylinder 314 is controlled to extend and retract. The clamping plate connector 117 is connected to the clamping cylinder 513 through the air pipe, and the clamping cylinder 513 is controlled to work.

[0025] The control device includes a circuit control device, such as... Figure 4 As shown, the circuit control device includes: controller 211, start switch 212, stop switch 213, solenoid valve 214, power supply 215, cooling fan 216, power socket 217, etc.; the clamping plate connector 315 is connected to the clamping cylinder 513 through an air pipe.

[0026] The controller 211 is equipped with a pre-programmed sequence. When the start switch 212 is pressed, the controller 211 operates according to the pre-programmed sequence. By controlling the opening and closing of the solenoid valve 214, it controls the cylinder to move, controls the clamping cylinder 513 to run, and controls the push plate and positioning block 117 to slide on the miniature slide rail 116. After the power amplifier is placed on the tray 511, pressing the start switch 212 causes the clamping cylinder 513 to clamp the power amplifier. The push plate and positioning block 117 move forward, bringing the power amplifier into contact with the contour plug-in assembly 514. The power amplifier is powered on and begins to work. After the corresponding operation is completed by the computer-side test software, the device controls the push plate and positioning block 117 to move backward, disengaging the power amplifier from the contour plug-in assembly 514. The clamping cylinder 513 rises, and the entire test is completed.

[0027] Solenoid valve 214 can be an independent solenoid valve or a solenoid valve in solenoid valve group 313. The number of solenoid valves 214 can be one or two, etc. The air source path is: air pressure - air source filter - solenoid valve group - cylinder. After the power amplifier is placed, controller 211 controls the clamping cylinder to clamp by controlling the first solenoid valve and the second solenoid valve. Controller 211 controls the solenoid valve in the solenoid valve group to control cylinder 314 to push the tray forward. When the detection time is up, controller 211 controls the solenoid valve in the solenoid valve group to control cylinder 314 to push the tray backward. Controller 211 controls the first solenoid valve and the second solenoid valve to control the clamping cylinder to release.

[0028] like Figure 6 As shown, the load connection device includes a load resistor 411, a heavy-duty connector female terminal 412, a heavy-duty connector 413, a tooling-side power socket 414, and an input-side power socket 415. The load resistor 411 and the heavy-duty connector female terminal 412 are connected using twisted-pair wires; the tooling-side power socket 414 and the input-side power socket 415 are connected using wires. The tooling-side power socket 414 is connected to a tooling plug. The input-side power socket 415 is the power input interface for the power amplifier.

[0029] The heavy-duty connector female terminal 412 is a 108-pin heavy-duty connector (female), and the heavy-duty connector 413 is a 24-pin heavy-duty connector (female). The load resistor 411 is connected to the 108-pin heavy-duty connector (female) via twisted-pair wires (pins 1-48); pins 50-54 of the 108-pin heavy-duty connector (female) are connected to pins 1-4 of the 24-pin heavy-duty connector (female), for CAN and A2B signals respectively. The power socket (tooling end) 414 and the power socket (input end) 415 are connected with wires.

[0030] This utility model provides a device for power amplifier testing, which solves the problems of messy and error-prone testing environments. Its dual-station design allows for simultaneous operation, improving work efficiency. It also enhances the stability and accuracy of the testing process. The contour-fitting insert structure only requires probe replacement after long-term wear, simplifying future maintenance.

[0031] The description of this utility model is given for illustrative and descriptive purposes only, and is not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the utility model, and to enable those skilled in the art to understand the utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An apparatus for performing power amplifier testing, the apparatus comprising: include: Equipment housing, control device, and power amplifier tooling; The device housing includes a base plate (111), a side plate (112), a front panel (113), a rear panel (114), an upper mounting plate (115), a miniature slide rail (116), a push plate and a positioning block (117), and a fixing plate and a positioning block (118); the fixing plate and the positioning block (118) are used for positioning; the miniature slide rail (116) is fixed on the upper mounting plate (115), and the push plate and the positioning block (117) are slidably connected to the miniature slide rail (116); The power amplifier fixture includes: a support plate (511), a stop block (512), a clamping cylinder (513), a contour plug assembly (514), a power plug (515), and a heavy-duty connector male terminal (516); the support plate (511) is used to support the power amplifier; the stop block (512) and the clamping cylinder (513) are located on the support plate (511) and are used to fix the power amplifier; the support plate (511) is fixed on the push plate and the positioning block (117) and can move toward the contour plug assembly (514) until the contour plug assembly (514) contacts the power amplifier; the contour plug assembly (514) is connected to the power plug (515) and the heavy-duty connector male terminal (516) by wires, and the heavy-duty connector male terminal (516) is inserted into the heavy-duty connector; The control device is used to control the operation of the clamping cylinder (513) and to control the push plate and the positioning block (117) to slide on the miniature slide rail (116).

2. The device as described in claim 1, characterized in that, The control device includes: an air circuit control device; the air circuit control device includes: an air source filter (311), a three-way connector (312), a solenoid valve assembly (313), a cylinder (314), and a clamping plate connector (315); the air source filter (311), the three-way connector (312), the solenoid valve assembly (313), the cylinder (314), and the clamping plate connector (315) are connected by air pipes; the telescopic rod of the cylinder (314) is connected to the push plate and the positioning block (117); The pressurized gas passes through the gas source filter (311) and enters the solenoid valve group (313) through the three-way connector. By opening and closing the solenoid valve group (313), the pressurized gas is controlled to enter the cylinder (314), and the extension rod of the cylinder (314) is controlled to extend and retract, so as to drive the push plate and the positioning block (117) to slide on the miniature slide rail (116).

3. The device as described in claim 2, characterized in that: The control device includes: a circuit control device; the circuit control device includes: a controller (211), a start switch (212), a stop switch (213), a solenoid valve (214), a power supply (215), a cooling fan (216), and a power socket (217); the clamping plate connector (315) is connected to the clamping cylinder (513) through an air pipe, and the solenoid valve (214) is used to control the on / off of the pressurized gas input into the clamping cylinder (513) through this air pipe; the controller (211) controls the on / off of the solenoid valve group (313) and the solenoid valve (214); wherein, by controlling the on / off of the solenoid valve (214), pressurized gas is controlled to enter the clamping cylinder (513), and the extension and retraction of the extension rod of the clamping cylinder (513) is controlled.

4. The apparatus of claim 1, wherein, include: Load connection device; The load connection device includes: a load resistor (411), a heavy-duty connector female end (412), a heavy-duty connector (413), a tooling end power socket (414), and an input end power socket (415).

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