CN210469741U

CN210469741U - Fault detector for vehicle-mounted radio system

Info

Publication number: CN210469741U
Application number: CN201922230419.7U
Authority: CN
Inventors: 王浩名; 王慧杰; 郭良明; 崔玉耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-05-05
Anticipated expiration: 2029-12-13

Abstract

The utility model provides a vehicle-mounted radio system fault detector relates to and detects technical field. The utility model comprises a shell and a circuit board encapsulated in the shell, wherein a direct current power supply arranged on the circuit board respectively supplies power to a controller, a display screen, a variable voltage DC-DC converter and a current sensor; one end of the current sensor is connected with the switch, the other end of the current sensor is connected with the input end of the controller, the voltage signal acquisition circuit is respectively connected with the variable voltage DC-DC converter and the input end of the controller, the circuit board is provided with a loudspeaker I, a loudspeaker II and an antenna, and the circuit board is also provided with an interface used for being connected with a radio to be tested. The utility model discloses change the radio blindly and cause economic loss when on-vehicle radio breaks down, avoided dismantling the secondary problem that the radio process produced, improved production efficiency, reduced manufacturing and cost of maintenance.

Description

Fault detector for vehicle-mounted radio system

Technical Field

The utility model belongs to the technical field of the detection technique and specifically relates to a vehicle-mounted radio system fault detector is related to.

Background

With the increasing demand of consumers for automobile products, the car entertainment radio system has become the basic configuration of the automobile, the radio is a machine for receiving the signals transmitted by the radio broadcast and restoring the signals to sound, and the types of the radio for receiving the signals are different according to the types of the radio broadcast, namely Amplitude Modulation (AM) broadcast and Frequency Modulation (FM), namely Frequency Modulation (FM) radio and amplitude modulation (FM) radio. Some receivers can receive both am and fm broadcasts, and are called am and fm receivers. The internal structure of the radio is relatively complex, and when a fault occurs, the fault cannot be judged from the appearance alone, and only an interchange method is adopted to judge whether the radio has the fault.

In the actual operation process, because the vehicle-mounted radio is installed inside the vehicle central control panel, and the disassembly process is very complicated, the labor, material resources and financial resources of a factory are greatly wasted; the secondary problems of scratching the central control panel, instrument panels and the like are inevitable in the process of disassembling the central control panel of the vehicle. The manufacturing cost is increased, and the quality of the whole vehicle is influenced.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vehicle-mounted radio system fault detector, which solves the economic loss caused by blindly replacing the radio when the vehicle-mounted radio fails, avoids the secondary problem generated in the radio disassembling process, improves the production efficiency and reduces the manufacturing and maintenance cost; the utility model relates to a rational in infrastructure, small, portable, convenient to use, easily realization.

In order to solve the technical problem, the utility model provides a technical scheme lies in:

the utility model provides a vehicle-mounted radio system fault detector, including the casing, the circuit board of encapsulation in the casing, be equipped with DC power supply, controller, display screen, variable voltage DC-DC converter, voltage signal acquisition circuit, current sensor, switch, speaker I and speaker II and antenna on the circuit board, DC power supply supplies power for controller, display screen, variable voltage DC-DC converter, current sensor respectively; one end of the current sensor is connected with the switch, the other end of the current sensor is connected with the input end of the controller, the voltage signal acquisition circuit is respectively connected with the variable voltage DC-DC converter and the input end of the controller, and the circuit board is provided with an interface used for being connected with a radio to be tested.

Further, the voltage signal acquisition circuit comprises a resistor R1 and a resistor R2, one end of the resistor R1 is connected with the anode of the variable voltage DC-DC converter, one end of the resistor R2 is connected with the cathode of the variable voltage DC-DC converter, and the other end of the resistor R1 and the other end of the resistor R2 are both connected with the input end of the controller.

Further, the resistance of the resistor R1 is 10K Ω, and the resistance of the resistor R2 is 1K Ω.

Further, the current sensor employs an ACS712 chip.

Furthermore, the controller adopts a singlechip.

Further, the intelligent control system also comprises a communication module, and the communication module is connected with the controller.

Technical scheme more than combining, the utility model discloses the beneficial effect who reaches lies in:

(1) the utility model discloses a vehicle-mounted radio system fault detector, provided with a direct current power supply, a controller, a display screen, a variable voltage DC-DC converter, a voltage signal acquisition circuit, a current sensor, a switch, a loudspeaker I, a loudspeaker II and an antenna, simulates the actual working state of a radio system, and has the advantages of simple, convenient and accurate operation and easy realization;

(2) the vehicle-mounted radio system fault detector provided by the utility model is provided with the voltage signal acquisition circuit and the current sensor, thereby increasing the detection of the working voltage and the current performance of the radio and solving the defect of the verification method for installing the vehicle-mounted radio system to be detected on a corresponding real vehicle;

(3) vehicle-mounted radio system fault detector, applicable radio system in multiple model detects.

Drawings

For a clear explanation of the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a circuit diagram provided in an embodiment of the present invention.

In the figure: 1. a controller; 2. a display screen; 3. a direct current power supply; 4. a variable voltage DC-DC converter; 5. a loudspeaker I; 6. a loudspeaker II; 7. an antenna; 8. a switch; 9. a current sensor; 10. the radio to be tested.

Detailed Description

The objects, aspects and advantages of the present invention will become apparent from the following detailed description, which, when taken in conjunction with the drawings, illustrate by way of example only, but are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the present embodiment provides a fault detector for a vehicle-mounted radio system, which includes a housing and a circuit board enclosed in the housing, wherein the circuit board is provided with a DC power supply 3, a controller 1, a display screen 2, a variable voltage DC-DC converter 4, a voltage signal acquisition circuit, a current sensor 9, a switch 8, a speaker i 5, a speaker ii 6 and an antenna 7, and the DC power supply 3 supplies power to the controller 1, the display screen 2, the variable voltage DC-DC converter 4 and the current sensor 9 respectively; one end of a current sensor 9 is connected with a switch 8, the other end of the current sensor 9 is connected with the input end of a controller 1, a voltage signal acquisition circuit is respectively connected with a variable voltage DC-DC converter 4 and the input end of the controller 1, an interface used for being connected with a radio 10 to be tested is arranged on a circuit board, a loudspeaker I5 and a loudspeaker II 6 are used for being connected with two loudspeakers of the radio 10 to be tested and used for testing whether the loudspeakers of the radio normally work or not, an antenna 7 is used for being connected with an antenna 7 of the radio 10 to be tested, the controller 1 adopts a single chip microcomputer, and a direct current power supply 3 adopts a 60V direct current power supply.

The voltage signal acquisition circuit comprises a resistor R1 and a resistor R2, one end of the resistor R1 is connected with the anode of the variable voltage DC-DC converter 4, one end of the resistor R2 is connected with the cathode of the variable voltage DC-DC converter 4, the other end of the resistor R1 and the other end of the resistor R2 are connected with the input end of the controller 1, the resistance value of the resistor R1 is 10K omega, the resistance value of the resistor R2 is 1K omega, and the voltage signal acquisition circuit is used for acquiring whether the voltage supplied by the variable voltage DC-DC converter 4 to the radio 10 to be tested is the voltage for normal operation of the radio.

The current sensor 9 adopts an ACS712 chip, which is a current detection dedicated chip based on the hall sensing principle, and is used for collecting current signals, transmitting the current signals to the controller 1, and displaying the current signals on the display screen 2.

On the basis of the above embodiment, as preferred, the detector further includes a communication module, the communication module is connected with the controller 1, the communication module can adopt a WIFI module, and the WIFI module is used for connecting a mobile phone or a computer to store data and a detected radio.

When the detector use, take this detector to the radio department of treating the detection, the interface connection that radio 10 and this detector were reserved will await measuring, the voltage that shows on rotatory variable voltage DC-DC converter 4 and observation display screen 2, the knob on stopping rotatory variable voltage DC-DC converter 4 when waiting that the voltage numerical value that shows on display screen 2 reaches radio operating voltage, closed switch 8, it is normal whether to observe the current signal that shows on display screen 2, retest radio control button, like frequency modulation, volume size adjustment, sound channel regulation, switch 8 machine key. When the switches 8 and the keys are tested to be effective and the loudspeaker sounds without noise, the function of the radio is normal.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A fault detector for a vehicle-mounted radio system is characterized in that: the direct current power supply (3) respectively supplies power to the controller (1), the display screen (2), the variable voltage DC-DC converter (4), a voltage signal acquisition circuit, a current sensor (9), a switch (8), a loudspeaker I (5), a loudspeaker II (6) and an antenna (7); one end of a current sensor (9) is connected with the switch (8), the other end of the current sensor (9) is connected with the input end of the controller (1), a voltage signal acquisition circuit is respectively connected with the variable voltage DC-DC converter (4) and the input end of the controller (1), and an interface used for being connected with a radio (10) to be tested is arranged on the circuit board.

2. The vehicle radio system fault detector of claim 1, wherein: the voltage signal acquisition circuit comprises a resistor R1 and a resistor R2, one end of the resistor R1 is connected with the anode of the variable voltage DC-DC converter (4), one end of the resistor R2 is connected with the cathode of the variable voltage DC-DC converter (4), and the other end of the resistor R1 and the other end of the resistor R2 are connected with the input end of the controller (1).

3. The vehicle radio system fault detector of claim 2, wherein: the resistance of the resistor R1 is 10K omega, and the resistance of the resistor R2 is 1K omega.

4. The vehicle radio system fault detector of claim 3, wherein: the current sensor (9) employs an ACS712 chip.

5. The vehicle radio system fault detector of claim 4, wherein: the controller (1) adopts a singlechip.

6. The vehicle radio system fault detector of claim 5, wherein: the intelligent control system also comprises a communication module, and the communication module is connected with the controller (1).