Radio station test tool

Abstract

The utility model discloses a radio station test tool comprising a box body, an audio signal generator, and an amplitude control module, an FM emission module and an audio receiving module which are arranged in the box body. The box body is a square box body and comprises a top plate and a plurality of side plates; the audio signal generator is arranged on the top plate and is used for outputting various single-tone audio signals; the amplitude control module comprises a first output interface which is connected with the audio signal generator and is used for receiving single-tone audio signals and outputting the single-tone audio signals through the first output interface after amplitude modulation; the first output interface is used for wired connection with to-be-tested equipment and testing related emission functions of the to-be-tested equipment; the FM transmitting module is connected with the audio signal generator, receives the single-tone audio signal, wirelessly transmits the single-tone audio signal and is used for testing an electromagnetic wave receiving function of the to-be-tested equipment; the audio receiving module comprises a first input interface and a first audio player; the first input interface is arranged on the side plate and used for being connected with a device to be tested and testing audio output related functions of the device to be tested. The maintenance efficiency of the radio station is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of maintenance tools, and in particular relates to a radio station testing tool. Background Art

[0002] At present, faults that occur during the use of radio equipment include low output power and poor reception. Radios are generally used for ship communications and are fixed on site. Therefore, when repairing radios, it is often necessary to carry multiple auxiliary devices that are large in size, complex to operate, and require external power supplies, which greatly affects the repair efficiency and cannot meet temporary major repair tasks. Summary of the invention

[0003] The utility model provides a radio station testing tool, which has the functions of providing wired and wireless audio signals and receiving weak audio signals emitted by the radio station, realizes multiple function tests of the radio station, has high integration, improves ease of use, and further improves maintenance efficiency.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A radio station test tool, comprising a box, an audio signal generator, an amplitude control module, an FM transmitting module, and an audio receiving module;

[0006] The box body is a square box body, including a top plate and a plurality of side plates;

[0007] The audio signal generator is arranged on the top plate and is used for controllably outputting a variety of monophonic audio signals;

[0008] The amplitude control module is arranged in the box, connected to the audio signal generator, receives the single-tone audio signal, modulates the amplitude of the single-tone audio signal and outputs it; the amplitude control module includes a first output interface, which is arranged on the side panel and is used for wired connection to the device under test to test its transmission-related functions;

[0009] The FM transmitting module is arranged in the box, connected to the audio signal generator, receives the single-tone audio signal, and wirelessly transmits it to test the electromagnetic wave receiving function of the device under test;

[0010] The audio receiving module is arranged in the box, and includes a first input interface and a first audio player; the first input interface is arranged on the side panel, and is used to connect to the device under test, test its audio output related functions, and play through the first audio player.

[0011] In some specific embodiments, a limiting module is further included, which is disposed in the box; the amplitude control module and the FM transmitting module are respectively connected to the audio signal generator through the limiting module;

[0012] The limiting module includes a first capacitor, a first resistor, and a second resistor;

[0013] The first capacitor, the first resistor, and the second resistor are connected in series in sequence; an end of the first capacitor away from the first resistor is connected to the audio signal generator; an end of the second resistor away from the first resistor is grounded; and a common end of the first resistor and the second resistor is connected to the amplitude control module and the FM transmitting module respectively.

[0014] In some specific embodiments, a limiting module is further included, which is disposed in the box; the amplitude control module and the FM transmitting module are respectively connected to the audio signal generator through the limiting module;

[0015] The limiting module includes a first capacitor and a first potentiometer; the first potentiometer includes a first end, a second end, and a first adjustable end; one end of the first capacitor is connected to the audio signal generator, and the other end is connected to the first end; the second end is grounded; the first adjustable end is respectively connected to the amplitude control module and the FM transmitting module.

[0016] In some specific embodiments, the amplitude control module further includes a first amplifier, a second capacitor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second potentiometer, a fourth switch, a fifth switch, a sixth switch, a seventh switch, and an eighth switch;

[0017] The first amplifier is an operational amplifier; the limiting module is connected to the reverse input terminal of the first amplifier through a series circuit of the second capacitor and the eighth resistor; the forward input terminal of the first amplifier is grounded;

[0018] Two ends of the third resistor are respectively connected to the reverse input end and the output end of the first amplifier;

[0019] The fourth switch is connected in series with the fourth resistor to form a first series circuit; the fifth switch is connected in series with the fifth resistor to form a second series circuit; the sixth switch is connected in series with the sixth resistor to form a third series circuit; the seventh switch is connected in series with the seventh resistor to form a fourth series circuit; the eighth switch is connected in series with the second potentiometer to form a fifth series circuit; the first series circuit, the second series circuit, the third series circuit, the fourth series circuit, and the fifth series circuit are connected in series with the reverse input terminal and the output terminal of the first amplifier respectively; the output terminal is connected to the first output interface.

[0020] In some specific embodiments, the FM transmitting module includes a third switch, an amplifying circuit module, and a radio frequency antenna module; the radio frequency antenna module is connected to the amplifying circuit module; the amplifying circuit module is connected to the limiting module and is connected to a low-voltage power supply through the third switch.

[0021] In some specific embodiments, an operation guidance module is also included, which includes a control module, multiple IO interfaces, a second voice player, and multiple switches; the control module pre-stores multiple independent audio guidance files; each switch is connected to each IO interface respectively; by turning on one of the switches, the corresponding audio guidance file is played to guide the test of the amplitude control module, the FM transmitting module, and the audio receiving module.

[0022] In some specific embodiments, the audio guide file includes FM transmission guide, first order amplitude modulation guide, second order amplitude modulation guide, third order amplitude modulation guide, fourth order amplitude modulation guide, and continuous amplitude modulation guide;

[0023] The third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch, and the eighth switch are all dual-way linkage switches, which are used for the FM transmitting module, the amplitude modulation control module, and the operation guidance module respectively;

[0024] The third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch, the eighth switch, and the second potentiometer are arranged on the top plate.

[0025] In some specific embodiments, the audio receiving module includes a second amplifier, a third potentiometer, and a tenth capacitor; the second amplifier is a bridge amplifier; the third potentiometer includes a third end, a fourth end, and a second adjustable end; the first input interface is connected to the third end through the tenth capacitor; the fourth end and the second adjustable end are respectively connected to the two positive-phase input ends of the second amplifier; and the two ends of the first audio player are respectively connected to the two output ends of the second amplifier.

[0026] In some specific embodiments, a power supply module is further included, which is disposed in the box and is respectively connected to the audio signal generator, the amplitude control module, the FM transmitting module, and the audio receiving module to provide a low-voltage power supply therefor;

[0027] The power module includes a rechargeable battery pack, a power management chip, an output module, a first inductor, a fifth capacitor, and a second light emitting diode;

[0028] The VIN of the power management chip is used to connect to an external low-voltage power supply to charge the rechargeable battery pack; the VOUT pin is connected to the output module to output the low-voltage power supply; the SW pin and the BAT pin are respectively connected to the positive and negative electrodes of the rechargeable battery pack through the first inductor and the fifth capacitor, and the LED3 pin and the LED2 pin are respectively connected to the positive and negative electrodes of the second light-emitting diode.

[0029] In some specific embodiments, the power module also includes a first switch, which is a double-open linked switch, including a first contact switch and a second contact switch; the first contact switch is a bidirectional switch, one end of which is used to connect the external low-voltage power supply, one end is connected to the output module, and one end is connected to the VIN pin of the power management chip; the two ends of the second contact switch are respectively connected to the end of the first inductor away from the SW pin and the positive pole of the rechargeable battery pack.

[0030] Compared with the prior art, the advantages and positive effects of the utility model are as follows: the radio station testing tooling of the utility model comprises an amplitude control module for testing the radio station broadcast receiving function to output an amplitude-adjustable audio signal, an FM transmitting module for testing the radio station electromagnetic wave receiving function, and an audio receiving module for testing the radio station audio monitoring function, and each module is integrated in a box to improve the integration level, and there is no need to collect multiple test equipment for testing different functions of the radio station, making the testing and maintenance work of the radio station more convenient and quick, and reducing the difficulty of carrying; improving the maintenance efficiency of the radio station. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in 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.

[0032] Figure 1 It is a structural schematic diagram of a radio station testing tooling proposed by the utility model;

[0033] Figure 2 This is a schematic diagram of the connection of the components of a radio test tooling proposed by the utility model;

[0034] Figure 3 is a circuit diagram of an example of a limiting module;

[0035] Figure 4 is a circuit diagram of another example of a clipping module;

[0036] Figure 5 This is the circuit diagram of the FM transmitter module;

[0037] Figure 6 is the circuit diagram of the amplitude control module;

[0038] Figure 7 This is the circuit diagram of the audio receiving module;

[0039] Figure 8 is a circuit diagram of an operation guidance module;

[0040] Fig. 9 This is a schematic diagram of the power module circuit.

[0041] In the figure,

[0042] 1. Box body; 11. Top plate; 12. Side plate; 2. Audio signal generator; 3. Limiting module; 4. FM transmitting module; 41. Amplifying circuit module; 42. RF antenna module; 5. Amplitude control module; 51. First output interface; 6. Audio receiving module; 61. First input interface; 7. Operation guide module; 8. Power module; 81. Output module;

[0043] C1, first capacitor; C2, second capacitor; C10, tenth capacitor; R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; R7, seventh resistor; R8, eighth resistor; RT1, first potentiometer; RT11, first terminal; RT12, second terminal; RT13, first adjustable terminal; RT2, second potentiometer; RT3, third potentiometer; RT31, third terminal; RT32, fourth terminal; RT33, first adjustable terminal; Two adjustable ends; K3, the third switch; K4, the fourth switch; K5, the fifth switch; K6, the sixth switch; K7, the seventh switch; K8, the eighth switch; BZ1, the first audio player; BZ2, the second voice player; U1, the first amplifier; U2, the second amplifier; U3, the control module; K1-1, the first contact switch; K1-2, the second contact switch; U4, the power management chip; B, the rechargeable battery pack; L1, the first inductor; C5, the fifth capacitor; D2, the second light-emitting diode. DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0045] Reference Figure 1 , Figure 2A radio station testing tool of the utility model includes a box body 1, an audio signal generator 2, an amplitude control module 5, an FM transmitting module 4, and an audio receiving module 6.

[0046] The box body 1 is a square box body, which can be made of plastic, plastic steel or metal material, and has an internal cavity, including a top plate 11 and a plurality of side plates 12 .

[0047] The audio signal generator 2 is an intelligent controller including a touch screen, and provides a single-tone audio signal through installed application software; the audio signal generator 2 is used to output a single-tone audio signal.

[0048] The amplitude control module 5 is arranged in the box 1, connected to the audio signal generator 2, receives the single-tone audio signal outputted by it, and outputs it after amplitude modulation; the amplitude control module 5 includes a first output interface 51, which is fixedly arranged on the side panel 12 and is used for wired connection to the device under test to test its transmission-related functions.

[0049] The FM transmitting module 4 is arranged in the box 1, connected to the audio signal generator 2, receives the single-tone audio signal outputted by the audio signal generator 2, and wirelessly transmits the single-tone audio signal to test the electromagnetic wave receiving function of the device under test.

[0050] The audio receiving module 6 is fixedly arranged in the box 1, and includes a first input interface 61 and a first audio player BZ1; the first input interface 61 is fixedly arranged on the side panel 12, and is used to connect to the device under test, test the audio output related functions of the device under test, and play through the first audio player BZ1.

[0051] The radio station test tool of the utility model comprises an amplitude control module 5 for testing the transmission-related functions of the radio station to output an amplitude-adjustable audio signal, an FM transmission module 4 for testing the electromagnetic wave receiving function of the radio station, and an audio receiving module 6 for testing the audio output-related functions of the radio station, and each module is integrated in a box 1, thereby improving the integration of the radio station test tool, eliminating the need to collect multiple test devices for testing different functions of the radio station, making the testing and maintenance work of the radio station more convenient and quick, and reducing the difficulty of carrying; improving the maintenance efficiency of the radio station.

[0052] The specific structure and circuit principle of the radio station testing tool of the present utility model are described in detail below through specific embodiments.

[0053] In some specific embodiments, reference Figure 2 , Figure 3 , Figure 4The radio station test tooling also includes a limiting module 3, which is arranged in the box 1 and is respectively connected to the audio signal generator 2, the amplitude control module 5, and the FM transmitting module 4; that is, the amplitude control module 5 and the FM transmitting module 4 are respectively connected to the audio signal generator 2 through the limiting module 3, receive the single-tone audio signal output by the audio signal generator 2, and limit the voltage level of the single-tone audio signal to a lower level, so as to facilitate the amplitude modulation of the amplitude control module 5 and the modulation of the FM transmitting module 4.

[0054] In some embodiments, reference Figure 3 The limiting module 3 includes a first capacitor C1, a first resistor R1, and a second resistor R2, which are connected in series in sequence; an end of the first capacitor C1 away from the first resistor R1 is connected to the audio signal generator 2; an end of the second resistor R2 away from the first resistor R1 is grounded; a common end of the first resistor R1 and the second resistor R2 are respectively connected to the amplitude control module 5 and the FM transmitting module 4, and the output voltage is limited to a low-level single-tone audio signal connected to the amplitude control module 5 and the FM transmitting module 4.

[0055] In some embodiments, reference Figure 4 The limiting module 3 includes a first capacitor C1 and a first potentiometer RT1; the first potentiometer RT1 includes a first end RT11, a second end RT12, and a first adjustable end RT13; one end of the first capacitor C1 is connected to the audio signal generator 2, and the other end is connected to the first end RT11; the second end RT12 is grounded; the first adjustable end RT13 is respectively connected to the amplitude control module 5 and the FM transmitting module 4, and the output voltage is limited to a low-level single-tone audio signal connected to the amplitude control module 5 and the FM transmitting module 4.

[0056] This embodiment uses the first potentiometer RT1 to adapt to the environment of additional resistance of the surrounding circuit through an adjustable resistance, which facilitates the adjustment of the low-level voltage of the single-tone audio signal output by the limiting module 3 to make it more accurate.

[0057] Preferably, the voltage level of the single-tone audio signal output by the limiting module 3 is 20 mV.

[0058] In some specific embodiments, reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The amplitude control module 5 includes a first amplifier U1, a second capacitor C2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a second potentiometer RT2, a fourth switch K4, a fifth switch K5, a sixth switch K6, a seventh switch K7, and an eighth switch K8.

[0059] The first amplifier U1 is an operational amplifier; the limiter module 3 is connected to the inverting input terminal of the first amplifier U1 through a series circuit of a second capacitor C2 and an eighth resistor R8, and the positive input terminal of the first amplifier U1 is grounded.

[0060] The two ends of the third resistor R3 are respectively connected to the reverse input end and the output end of the first amplifier U1; the fourth switch K4 is connected in series with the fourth resistor R4 to obtain a first series circuit; the fifth switch K5 is connected in series with the fifth resistor R5 to obtain a second series circuit; the sixth switch K6 is connected in series with the sixth resistor R6 to obtain a third series circuit; the seventh switch K7 is connected in series with the seventh resistor R7 to obtain a fourth series circuit; the eighth switch K8 is connected in series with the second potentiometer RT2 to obtain a fifth series circuit; the two ends of the first series circuit, the second series circuit, the third series circuit, the fourth series circuit, and the fifth series circuit are respectively connected to the reverse input end and the output end of the first amplifier U1; and the output end is connected to the first output interface 51.

[0061] The radio test tooling of this embodiment connects the third resistor R3 between the reverse input terminal and the output terminal of the first amplifier U1 and connects the fourth switch K4, the fifth switch K5, the sixth switch K6, the seventh switch K7 and the eighth switch K8 in parallel with the series circuit consisting of the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7 and the second potentiometer RT2, so as to facilitate the adjustment of the amplitude of the single-tone audio signal output by the amplitude control module 5 and improve the adjustment efficiency.

[0062] In some specific embodiments, reference Figure 6 The FM transmitting module 4 includes a third switch K3, an amplifying circuit module 41, and a radio frequency antenna module 42; the radio frequency antenna module 42 is connected to the amplifying circuit module 41; the amplifying circuit module 41 is connected to the limiting module 3, and is connected to a low-voltage power supply through the third switch K3. The opening or closing of the third switch K3 controls whether the FM transmitting module 4 is powered, thereby controlling whether it wirelessly transmits electromagnetic waves of a monophonic audio signal.

[0063] In some specific embodiments, reference Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 8 The radio station test tooling also includes an operation guidance module 7, which includes a control module U3, multiple IO interfaces, a second voice player BZ2, and multiple switches; the control module U3 pre-stores multiple independent audio guidance files; each switch is respectively connected to each IO interface; by turning on one of the switches, the corresponding audio guidance file is played to guide the radio station test using the amplitude control module 5, the FM transmitting module 4, and the audio receiving module 6.

[0064] This embodiment gradually guides the operation of the radio test by playing the voice of the operation guide, reduces the difficulty of the operation of each module, and improves the operation efficiency and accuracy. Among them, the control module U3 and the second voice player BZ2 are modularly designed, and use the purchased functional module product of model JQ8900.

[0065] In some specific embodiments, reference Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 8 The audio guide files include FM transmission guide, first order AM guide, second order AM guide, third order AM guide, fourth order AM guide and continuous AM guide.

[0066] The third switch K3, the fourth switch K4, the fifth switch K5, the sixth switch K6, the seventh switch K7, and the eighth switch K8 are all dual-way linkage switches, which are respectively used for the FM transmitter module 4, the amplitude control module 5, and the audio guide module; that is, one way of the third switch K3 is used to control the power supply control of the FM transmitter module 4, and the other way is connected to the IO interface of the operation guide module 7 to control the broadcast of the operation guide file (FM transmission guide) corresponding to the FM transmitter module 4, and guide the operation of the FM transmission test; accordingly, one way of the fourth switch K4, the fifth switch K5, the sixth switch K6, the seventh switch K7, and the eighth switch K8 is used for adjusting the voltage level of the amplitude control module; the other way is used for the operation guide module 7 to broadcast the corresponding first-order amplitude modulation guide, second-order amplitude modulation guide, third-order amplitude modulation guide, fourth-order amplitude modulation guide, and continuous amplitude modulation guide test operation guide files. Improve the pertinence of the operation guide and reduce the test operation, thereby improving the test efficiency.

[0067] The third switch K3 , the fourth switch K4 , the fifth switch K5 , the sixth switch K6 , the seventh switch K7 , the eighth switch K8 , and the second potentiometer RT2 are arranged on the top plate 11 to facilitate the test operation.

[0068] In some specific embodiments, reference Figure 7 The audio receiving module 6 includes a second amplifier U2, a third potentiometer RT3, and a tenth capacitor C10; the second amplifier U2 is a bridge amplifier; the third potentiometer RT3 includes a third terminal RT31, a fourth terminal RT32, and a second adjustable terminal RT33; the first input interface 61 is connected to the device under test to receive its monitored content; the first input interface 61 is connected to the third terminal RT31 through the tenth capacitor C10; the fourth terminal RT32 and the second adjustable terminal RT33 are respectively connected to the two positive phase input terminals of the second amplifier U2; the two ends of the first audio player BZ1 are respectively connected to the two output terminals of the second amplifier U2 for playing the monitored content.

[0069] The third potentiometer RT3 is used to adjust the playback volume.

[0070] In some specific embodiments, reference Figure 1 , Figure 2 , Fig. 9 The radio station test tooling also includes a power supply module 8, which is arranged in the box 1 and is respectively connected to the audio signal generator 2, the amplitude control module 5, the FM transmitting module 4, the audio receiving module 6, and the operation guide module 7 to provide them with a low-voltage power supply.

[0071] The power module 8 includes a rechargeable battery pack B, a power management chip U4, an output module 81, a first inductor L1, a fifth capacitor C5, a second light-emitting diode D2, a second switch, and a ninth resistor; the VIN pin of the power management chip U4 is used to connect to an external low-voltage power supply to charge the rechargeable battery pack B; the VOUT pin is connected to the output module 81 to output a low-voltage power supply; the SW pin and the BAT pin are respectively connected to the positive and negative electrodes of the rechargeable battery pack B through the first inductor L1 and the fifth capacitor C5, and are used to charge the rechargeable battery pack B or be powered by the rechargeable battery pack B; the LED3 pin and the LED2 pin are respectively connected to the positive and negative electrodes of the second light-emitting diode D2. The second light-emitting diode D2 is a power indicator light, which is arranged on the top plate 11 and is used to display the remaining power of the rechargeable battery pack B.

[0072] Two ends of the second switch are respectively connected to the KEY pin of the power management chip U4 and grounded through a ninth resistor, and are used to control the state of the power management chip U4.

[0073] The rechargeable battery pack B adopts a lithium battery pack.

[0074] The radio station testing tool of this embodiment is powered by a rechargeable battery pack B, which reduces the limitation of the power supply and expands its scope of use.

[0075] In some specific embodiments, reference Fig. 9 The power module 8 also includes a first switch, which is a double-open linkage switch, including a first contact switch K1-1 and a second contact switch K1-2; the first contact switch K1-1 is a bidirectional switch, one end of which is used to connect to an external low-voltage power supply, one end is connected to the output module 81, and one end is connected to the VIN pin of the power management chip U4; the two ends of the second contact switch K1-2 are respectively connected to the end of the first inductor L1 away from the SW pin and the positive electrode of the rechargeable battery pack B.

[0076] The output module 81 is a plurality of ripple capacitors connected in parallel, which are used to reduce the output ripple of the low-voltage power supply and improve the voltage stability of the low-voltage power supply.

[0077] When the first contact switch K1-1 is connected to the output module 81, the low-voltage power supply is supplied by an external low-voltage power supply, such as the low-voltage power output by the power adapter, which provides the low-voltage power supply through the output module 81. At this time, the second contact switch K1-2 is turned on, and the rechargeable battery pack B is not connected to the circuit to prevent it from discharging.

[0078] When the first contact switch K1-1 is connected to the VIN pin of the power management chip U4, the second contact switch K1-2 is closed, and the rechargeable battery pack B is connected to the circuit; when the external low-voltage power supply is connected, the rechargeable battery pack B is charged; when the external voltage power supply is not connected, the rechargeable battery pack B is powered. When the radio test tooling is not in use, the first contact switch K1-1 is connected to the output module 81, and the second contact module is disconnected to prevent the rechargeable battery pack B from self-discharging.

[0079] The second switch is used to control whether to output low voltage electricity to the output module 81 when the charging battery pack B is supplying power.

[0080] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0081] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0083] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A radio station test tool, characterized in that: include: The box body is a square box body, including a top plate and a plurality of side plates; An audio signal generator is arranged on the top plate and is used for controllably outputting a variety of monophonic audio signals; An amplitude control module is arranged in the box, connected to the audio signal generator, receives the single-tone audio signal, modulates the amplitude of the single-tone audio signal and outputs the signal; the amplitude control module includes a first output interface, which is arranged on the side panel and is used for wired connection to the device to be tested to test its transmission-related functions; An FM transmitting module is disposed in the box, connected to the audio signal generator, receives the single-tone audio signal, and wirelessly transmits the single-tone audio signal to test the electromagnetic wave receiving function of the device under test; The audio receiving module is arranged in the box and includes a first input interface and a first audio player; the first input interface is arranged on the side panel and is used to connect to the device under test, test its audio output related functions, and play through the first audio player.

2. The radio station test tool according to claim 1, characterized in that: It also includes a limiting module, which is arranged in the box; the amplitude control module and the FM transmitting module are respectively connected to the audio signal generator through the limiting module; The limiting module includes a first capacitor, a first resistor, and a second resistor; The first capacitor, the first resistor, and the second resistor are connected in series in sequence; an end of the first capacitor away from the first resistor is connected to the audio signal generator; an end of the second resistor away from the first resistor is grounded; and a common end of the first resistor and the second resistor is connected to the amplitude control module and the FM transmitting module respectively.

3. The radio station test tool according to claim 1, characterized in that: It also includes a limiting module, which is arranged in the box; the amplitude control module and the FM transmitting module are respectively connected to the audio signal generator through the limiting module; The limiting module includes a first capacitor and a first potentiometer; the first potentiometer includes a first end, a second end, and a first adjustable end; one end of the first capacitor is connected to the audio signal generator, and the other end is connected to the first end; the second end is grounded; the first adjustable end is respectively connected to the amplitude control module and the FM transmitting module.

4. The radio station test tool according to claim 3, characterized in that: The amplitude control module also includes a first amplifier, a second capacitor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second potentiometer, a fourth switch, a fifth switch, a sixth switch, a seventh switch, and an eighth switch; The first amplifier is an operational amplifier; the limiting module is connected to the reverse input terminal of the first amplifier through a series circuit of the second capacitor and the eighth resistor; the forward input terminal of the first amplifier is grounded; Two ends of the third resistor are respectively connected to the reverse input end and the output end of the first amplifier; The fourth switch is connected in series with the fourth resistor to form a first series circuit; the fifth switch is connected in series with the fifth resistor to form a second series circuit; the sixth switch is connected in series with the sixth resistor to form a third series circuit; the seventh switch is connected in series with the seventh resistor to form a fourth series circuit; the eighth switch is connected in series with the second potentiometer to form a fifth series circuit; the first series circuit, the second series circuit, the third series circuit, the fourth series circuit, and the fifth series circuit are connected in series with the reverse input terminal and the output terminal of the first amplifier respectively; the output terminal is connected to the first output interface.

5. The radio station test tool according to claim 4, characterized in that: The FM transmitting module includes a third switch, an amplifying circuit module, and a radio frequency antenna module; the radio frequency antenna module is connected to the amplifying circuit module; the amplifying circuit module is connected to the limiting module and is connected to a low voltage power supply through the third switch.

6. The radio station test tool according to claim 5, characterized in that: It also includes an operation guidance module, which includes a control module, multiple IO interfaces, a second voice player, and multiple switches; the control module pre-stores multiple independent audio guidance files; each switch is connected to each IO interface respectively; by turning on one of the switches, the corresponding audio guidance file is played to guide the test of the amplitude control module, the FM transmitting module, and the audio receiving module.

7. The radio station test tool according to claim 6, characterized in that: The audio guide file includes FM transmission guide, first order amplitude modulation guide, second order amplitude modulation guide, third order amplitude modulation guide, fourth order amplitude modulation guide, and continuous amplitude modulation guide; The third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch, and the eighth switch are all dual-way linkage switches, which are used for the FM transmitting module, the amplitude modulation control module, and the operation guidance module respectively; The third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch, the eighth switch, and the second potentiometer are arranged on the top plate.

8. The radio station test tool according to claim 1, characterized in that: The audio receiving module includes a second amplifier, a third potentiometer, and a tenth capacitor; the second amplifier is a bridge amplifier; the third potentiometer includes a third end, a fourth end, and a second adjustable end; the first input interface is connected to the third end through the tenth capacitor; the fourth end and the second adjustable end are respectively connected to the two positive phase input ends of the second amplifier; and the two ends of the first audio player are respectively connected to the two output ends of the second amplifier.

9. The radio station testing tool according to any one of claims 1 to 8, characterized in that: It also includes a power supply module, which is arranged in the box and is respectively connected to the audio signal generator, the amplitude control module, the FM transmitting module, and the audio receiving module to provide low-voltage power for them; The power module includes a rechargeable battery pack, a power management chip, an output module, a first inductor, a fifth capacitor, and a second light emitting diode; The VIN of the power management chip is used to connect to an external low-voltage power supply to charge the rechargeable battery pack; the VOUT pin is connected to the output module to output the low-voltage power supply; the SW pin and the BAT pin are respectively connected to the positive and negative electrodes of the rechargeable battery pack through the first inductor and the fifth capacitor, and the LED3 pin and the LED2 pin are respectively connected to the positive and negative electrodes of the second light-emitting diode.

10. The radio station testing tool according to claim 9, characterized in that: The power module also includes a first switch, which is a double-open linkage switch, including a first contact switch and a second contact switch; the first contact switch is a bidirectional switch, one end of which is used to connect to the external low-voltage power supply, one end is connected to the output module, and one end is connected to the VIN pin of the power management chip; the two ends of the second contact switch are respectively connected to the end of the first inductor away from the SW pin and the positive pole of the rechargeable battery pack.

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