Portable multifunctional signal generator

Abstract

The utility model relates to a portable multifunctional signal generator, which comprises a casing, a signal output connector, a charging connector, and a circuit board, a wireless signal receiving module, a singlechip, an operational amplifier and a storage battery which are positioned in the casing, and the side surface of the casing is provided with a signal outlet hole and a charging hole; the circuit board is fixed in the shell; the wireless signal receiving module, the single chip microcomputer, the operational amplifier and the storage battery are fixed on the circuit board at intervals; the signal output connector is inserted and fixed in the signal outlet hole; the charging connector is inserted and fixed in the charging hole; the single-chip microcomputer is electrically connected with the wireless signal receiving module, the operational amplifier, the storage battery, the signal output connector and the charging connector. The wireless signal receiving module is in communication connection with a mobile phone APP through wifi or Bluetooth, a plurality of operation keys and a liquid crystal display screen which are installed on a traditional signal amplifier are replaced, and the operation difficulty can be lowered; in addition, the manufacturing cost can be greatly reduced, the overall size is reduced, and the carrying and using convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of signal generators, and particularly relates to a portable multi-functional signal generator. Background Art

[0002] A signal generator is a device that can provide electrical signals of various frequencies, waveforms, and output levels. When measuring the amplitude characteristics, frequency characteristics, transmission characteristics, and other electrical parameters of various telecommunication systems or telecommunication devices, as well as when measuring the characteristics and parameters of components, it is used as a test signal source or excitation source.

[0003] The traditional signal generator mainly consists of a chassis, multiple operation buttons with different functions, a liquid crystal display screen, a circuit board, a single-chip microcomputer, an operational amplifier, and a signal output connector. The front of the chassis is provided with a display hole and multiple operation holes, and the side of the chassis is provided with a signal output hole. The multiple operation buttons are respectively installed in the multiple operation holes; the liquid crystal display screen is fixed in the display hole; the circuit board, the single-chip microcomputer, and the operational amplifier are all located inside the chassis, and the circuit board is fixed inside the chassis; the single-chip microcomputer and the operational amplifier are both fixed on the circuit board; the signal output connector is inserted and fixed in the signal output hole; the single-chip microcomputer is respectively communicatively connected to the operation buttons, the liquid crystal display screen, the operational amplifier, and the signal output connector; in practical applications, multiple operation buttons are used to link the liquid crystal display screen to input an analog signal, and through an operational amplifier circuit composed of an operational amplifier, a signal source or an excitation source can be output from the signal output connector.

[0004] However, for the output of the above signal source or excitation source, the installation of multiple operation buttons and a liquid crystal display screen will not only greatly increase the manufacturing cost of the signal amplifier, but also increase the volume and weight of the signal amplifier. At the same time, it is not conducive to carrying and installing for use.

[0005] Therefore, how to provide a multi-functional signal generator with low manufacturing cost, convenient operation, and easy to carry is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0006] The utility model provides a portable multi-functional signal generator, which solves the technical problems of the existing signal amplifier having more structures, larger size, and higher manufacturing cost.

[0007] The technical solution of the utility model to solve the above technical problems is as follows: A portable multi-functional signal generator includes a housing, a signal output connector, a charging connector, and a circuit board, a wireless signal receiving module, a single-chip microcomputer, an operational amplifier, and a storage battery located inside the housing.

[0008] The interior of the casing is hollow, and signal output holes and charging holes are provided on its side; the circuit board is fixed inside the casing; the wireless signal receiving module, the single-chip microcomputer, the operational amplifier, and the storage battery are fixedly spaced on the circuit board, and the wireless signal receiving module is communicatively connected to the mobile phone APP via wifi or Bluetooth; the signal output connector is inserted and fixed in the signal output hole; the charging connector is inserted and fixed in the charging hole; the single-chip microcomputer is electrically connected to the wireless signal receiving module, the operational amplifier, the storage battery, the signal output connector, and the charging connector respectively; wherein, the storage battery provides 12V voltage for the operational amplifier; the charging connector provides 6V voltage for the wireless signal receiving module and the single-chip microcomputer.

[0009] The beneficial effects of the present utility model are as follows: By using the wireless signal receiving module to communicate with the mobile phone APP via wifi or Bluetooth, replacing the multiple operation buttons and liquid crystal display screens installed in the traditional signal amplifier, it not only reduces the operation difficulty and improves the visual operation level, but also significantly reduces the manufacturing cost, shrinks the overall volume, and improves the convenience of carrying and using.

[0010] Based on the above technical solution, the present utility model can be further improved as follows.

[0011] Further, it further includes a buzzer, the buzzer is located inside the casing and fixed on the circuit board; the single-chip microcomputer is communicatively connected to the buzzer.

[0012] Further, the wireless signal receiving module is a Bluetooth module or a wifi module.

[0013] Further, there are at least 3 operational amplifiers. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structure schematic diagram of a portable multi-functional signal generator of the present utility model;

[0015] Figure 2 It is an internal structure schematic diagram of a portable multi-functional signal generator of the present utility model;

[0016] Figure 3 It is a schematic diagram of the principle of a portable multi-functional signal generator of the present utility model.

[0017] In the drawings, the list of components represented by each reference numeral is as follows:

[0018] 1. Casing, 11. Signal output hole, 12. Charging hole, 2. Signal output connector, 3. Charging connector, 4. Circuit board, 5. Wireless signal receiving module, 6. Single-chip microcomputer, 7. Operational amplifier, 8. Storage battery, 9. Buzzer. Detailed implementation manners

[0019] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0020] As Figure 1 and Figure 2 shown, a portable multi-functional signal generator includes a housing 1, a signal output connector 2, a charging connector 3, and a circuit board 4, a wireless signal receiving module 5, a single-chip microcomputer 6, an operational amplifier 7, and a storage battery 8 located inside the housing 1.

[0021] The inside of the housing 1 is hollow, and a signal output hole 11 and a charging hole 12 are provided on its side; the circuit board 4 is fixed inside the housing 1; the wireless signal receiving module 5, the single-chip microcomputer 6, the operational amplifier 7, and the storage battery 8 are fixedly arranged on the circuit board 4 at intervals, and the wireless signal receiving module 5 is communicatively connected to the mobile phone APP via wifi or Bluetooth; the signal output connector 2 is inserted and fixed in the signal output hole 11; the charging connector 3 is inserted and fixed in the charging hole 12; the single-chip microcomputer 6 is electrically connected to the wireless signal receiving module 5, the operational amplifier 7, the storage battery 8, the signal output connector 2, and the charging connector 3 respectively; wherein, the storage battery 8 provides a 12V voltage for the operational amplifier 7; the charging connector 3 provides a 6V voltage for the wireless signal receiving module 5 and the single-chip microcomputer 6.

[0022] In some specific embodiments, a buzzer 9 is further included. The buzzer 9 is located inside the housing 1 and fixed on the circuit board 4; the single-chip microcomputer 6 is communicatively connected to the buzzer.

[0023] In some specific embodiments, the wireless signal receiving module 5 is a Bluetooth module or a wifi module.

[0024] In some specific embodiments, there are at least 3 operational amplifiers 7.

[0025] Embodiment 1, the following is the main program, which mainly completes the following contents:

[0026] Initialization of the controller clock, initialization of the IO ports, and initialization of peripherals such as DAC, DMA, timer, and serial port.

[0027] Complete the initialization of the freeRtos operating system and establish a Bluetooth communication task.

[0028] Complete the initialization of the modbus protocol.

[0029] 4. After the initialization is completed, enter the task scheduling program.

[0030] The following is the working processing program of the Bluetooth communication task, which mainly completes the following contents:

[0031] The controller reads the instructions sent by the APP received via Bluetooth.

[0032] Parse the received instructions.

[0033] Perform corresponding actions according to the parsed instructions.

[0034] Return the result of the action to the APP via Bluetooth.

[0035] The following is the signal waveform generation program, which mainly completes the following:

[0036] According to the instructions sent by the APP received by the controller, for example: the APP requires the controller to generate a sine wave with a frequency of 100 KHz and a voltage amplitude of 10 V. The controller generates the corresponding waveform data and stores it in the memory.

[0037] Calculate the update time of the timer according to the frequency of the waveform. Each time the timer triggers an update, 1 waveform data is output through the controller. When the timer is continuously updated, the corresponding signal waveform can be output.

[0038] The following is the control program for the indicator light, which mainly completes the following:

[0039] Control the indicator light to display differently according to the current state of the controller. When the mobile phone has not established a Bluetooth connection with the signal generator, has established a connection, and the signal generator is outputting a signal, the states of the light-emitting diodes are: slow flashing, constant on, and fast flashing respectively.

[0040] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A portable multi-functional signal generator, characterized in that, It includes a housing (1), a signal output connector (2), a charging connector (3), and a circuit board (4), a wireless signal receiving module (5), a single-chip microcomputer (6), an operational amplifier (7), and a storage battery (8) located inside the housing (1). The interior of the housing (1) is hollow, and its side is provided with a signal output hole (11) and a charging hole (12); the circuit board (4) is fixed inside the housing (1); the wireless signal receiving module (5), the single-chip microcomputer (6), the operational amplifier (7), and the storage battery (8) are fixedly arranged on the circuit board (4) at intervals, and the wireless signal receiving module (5) is communicatively connected to a mobile phone APP via wifi or Bluetooth; the signal output connector (2) is inserted and fixed in the signal output hole (11); the charging connector (3) is inserted and fixed in the charging hole (12); the single-chip microcomputer (6) is electrically connected to the wireless signal receiving module (5), the operational amplifier (7), the storage battery (8), the signal output connector (2), and the charging connector (3) respectively.

2. The portable multi-functional signal generator according to claim 1, wherein It further includes a buzzer (9), the buzzer (9) is located inside the housing (1) and fixed on the circuit board (4); the single-chip microcomputer (6) is communicatively connected to the buzzer.

3. A portable multi-functional signal generator according to claim 1, characterized in that, The wireless signal receiving module (5) is a Bluetooth module or a wifi module.

4. A portable multi-functional signal generator according to claim 1, characterized in that, There are at least 3 operational amplifiers (7).

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