CN217113265U

CN217113265U - RF module burning and testing control device based on analog switch IC

Info

Publication number: CN217113265U
Application number: CN202221031251.2U
Authority: CN
Inventors: 李健
Original assignee: Chengdu Ashining Technology Co ltd
Current assignee: Chengdu Ashining Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-02
Anticipated expiration: 2032-04-29

Abstract

The utility model belongs to the technical field of radio frequency equipment testing equipment, and discloses a Radio Frequency (RF) module burning and testing control device based on an analog switch Integrated Circuit (IC), which comprises a processing module, a power supply module and an interface control module, wherein the power supply module is connected with an external power supply to reduce and stabilize voltage and then supply power to the processing module and the interface control module; the interface control module comprises a fixed port and an analog switch, the processing module is connected with the analog switch to conduct on/off control on the fixed port, and the fixed port is connected with the tested RF module. The utility model discloses the integrated level is high, and RF matches the accuracy, need not to adopt special type PCB or microwave PCB panel, very big reduction test cost, improved the automation level and the production of test and test reliability, uniformity.

Description

RF module burning and testing control device based on analog switch IC

Technical Field

The utility model belongs to the technical field of the radio frequency equipment test, concretely relates to RF module burns record and test control device based on analog switch IC.

Background

With the development of science and technology, the application of science and technology is more and more extensive, especially in the safety field, such as ocean water level monitoring, river water level monitoring, meteorological monitoring, air quality monitoring, geological monitoring, water quality monitoring, and front obstacle monitoring in the current automobile automatic driving system. All security measures are derived from the collection, analysis and judgment of previous forms of data, and it is a complicated task to effectively transmit data back to the host system in the data collection.

The traditional way is to connect to the nearby computer room through cables or transmit data back to our background through the base station of the operator. In any way, the construction cost and the later maintenance cost are higher. The network of an operator is used for returning data, so that low power consumption is difficult to achieve, and therefore cables need to be laid on the acquisition system to ensure power supply of the system. And each acquisition node can generate data flow cost of an operator in the later period, so that the construction and later maintenance cost is greatly increased. Under the background, the demands for low power consumption, low maintenance cost and low construction cost are increasingly strong. The demand of more and more internet of things application scenes leads to higher and more requirements on the automation of the production of internet of things module products, particularly Sub-1GHz range RF modules, and the demand is more and more vigorous.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a RF module burns record and test control device based on analog switch IC to test and burn record the process for the RF module and provide the test fixture, compare in prior art have low construction cost, low maintenance cost, be convenient for integrated radio frequency production and test solution.

The utility model discloses the technical scheme who adopts does:

in a first aspect, the utility model provides an analog switch IC-based RF module burning and testing control device, which comprises a processing module, a power supply module and an interface control module, wherein the power supply module is connected with an external power supply to supply power to the processing module and the interface control module after voltage reduction and voltage stabilization;

the interface control module comprises a fixed port and an analog switch, the processing module is connected with the analog switch to conduct on/off control on the fixed port, and the fixed port is connected with the tested RF module.

In combination with the first aspect, the present invention provides the first embodiment of the first aspect, wherein the fixed port includes a power output port, a TX/RX serial port and an SWD download port, and is provided with two switches respectively corresponding to the on/off control of the TX/RX serial port and the SWD download port.

In combination with the first embodiment of the first aspect, the present invention provides a second embodiment of the first aspect, wherein the power supply module has a first branch, the first branch has a first voltage-reducing and voltage-stabilizing module and a power conversion module, the input power is reduced by the voltage-reducing and voltage-stabilizing module and then the input power is input into the corresponding power output port, and the output voltage is adjusted by the power conversion module.

In combination with the second embodiment of the first aspect, the present invention provides a third embodiment of the first aspect, wherein the first branch comprises a plurality of parallel output circuits, and the single output circuit is respectively provided with a voltage reduction and stabilization module and a power conversion module.

With reference to the first to third embodiments of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein an ESD protection module is disposed on the fixed port.

In combination with the second embodiment of the first aspect, the utility model provides a fifth embodiment of the first aspect, power module includes the second branch road, and the second branch road has second buck-boost voltage regulator module and LDO stabiliser, supplies power for analog switch buck through the second buck-boost voltage regulator module, and supplies power for processing module buck by the processing of LDO stabiliser.

With reference to the first to third implementation manners of the first aspect, the present invention provides a sixth implementation manner of the first aspect, further comprising an interactive key, wherein the interactive key controls the processing module and the analog switch.

With reference to the first to third embodiments of the first aspect, the present invention provides a seventh embodiment of the first aspect, wherein the TX/RX serial port and the SWD download port are provided with an LED lamp for indicating an operating state, and the LED lamp is controlled by the control module to flash.

Combine the first to three kinds of implementation modes of first aspect, the utility model provides an eighth implementation mode of first aspect still is equipped with the input port of being connected with analog switch, burns record equipment through the input port and outside and is connected.

The utility model has the advantages that:

the utility model discloses

The system is characterized in that a circulating burning and testing function is realized based on an analog switch, a plurality of independent power supply units (structures such as voltage reduction and voltage stabilization modules) and a processing module, a Sub-1GHz wireless radio frequency multi-module production and testing device is formed, time-sharing receiving and transmitting switching and circulating burning switching of a plurality of sequentially arranged radio frequency modules can be realized, signals of an external burner are shared by the analog switch in a time-sharing manner to realize circulating burning of the modules, meanwhile, a testing port is expanded to a plurality of modules according to the same principle, automatic receiving and transmitting testing can be carried out on the RF modules in a time-sharing manner, and due to the fact that RF matching is accurate, a special PCB or a microwave PCB plate is not needed, testing cost is greatly reduced, and the automation level of testing, the production and testing reliability and consistency are improved; therefore, the multi-module transceiving test and the multi-module circulating automatic burning are realized, the production efficiency and the test efficiency are improved, and the system test period is shortened.

Drawings

Fig. 1 is an architecture diagram of a test control device in an embodiment of the present invention;

fig. 2 is a schematic diagram of specific types and pin functions of the MCU in the burn recording and test control device in the embodiment of the present invention;

fig. 3 is a schematic view of a test analog switch for the led serial ports 0-3 in the burning and testing control device in the embodiment of the present invention;

fig. 4 is a schematic diagram of a test analog switch for the led-out serial port 4-7 in the burning and testing control device in the embodiment of the present invention;

fig. 5 is a schematic diagram of a burning simulation switch for led serial ports 0-4 in the burning and testing control device in the embodiment of the present invention;

fig. 6 is a schematic diagram of a burning simulation switch for the led serial ports 4-7 in the burning and testing control device in the embodiment of the present invention;

fig. 7 is a schematic diagram of a sending outlet and ESD protection for testing in the burning and testing control device according to an embodiment of the present invention;

fig. 8 is a schematic view of a receiving outlet and ESD protection for testing in the burning and testing control device according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a programming SWDIO outlet and ESD protection in the programming and testing control device according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a programming SWCLK lead-out and ESD protection in the programming and testing control device according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a power outlet and ESD protection in the recording and testing control device according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a power management application circuit of a single MP2456 in an embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on that shown in the drawings or that the product of the application is used as it is, this is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being 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 application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

the embodiment provides an analog switch IC (integrated circuit) -based RF (radio frequency) module burning and testing control device, in particular to a testing tool, which comprises a circuit structure and a wiring harness, wherein a plurality of RF modules are fixed and correspondingly connected by matching with an external clamp, so that the RF modules can be tested and burnt together.

Specifically, as shown in fig. 1, the architecture of the apparatus in the present embodiment is shown.

The system comprises a processing module, a power supply module, an analog switch and a plurality of fixed ports, wherein each fixed port comprises a power output port, the fixed ports comprise power output ports, TX/RX serial ports and SWD download ports, and two module switches are respectively arranged to be respectively corresponding to on/off control of the TX/RX serial ports and the SWD download ports. As shown in fig. 3 and 4, the circuit structure of the analog switch corresponding to the SWD download port is shown. And fig. 5 and 6 are circuit configuration diagrams showing analog switches corresponding to the TX/RX serial ports.

As can be seen from the figure, the MCU as a core component is a processing module, and as shown in fig. 2, the processing module adopts a single chip microcomputer of a model a39, and discloses specific pin function connection.

As shown in fig. 7-11, in the present embodiment, eight sets of TX/RX serial ports are provided, and then eight sets of SWD download ports and power output ports are correspondingly provided. And the TX/RX serial port and the SWD download port are provided with LED lamps for indicating the working state, and the LED lamps are controlled by the control module to flash.

Wherein, power module includes first branch road and second branch road, wherein is equipped with second step-down voltage regulator module and LDO stabiliser on the second branch road, steps down the power supply for analog switch step-down through second step-down voltage regulator module, is handled by the LDO stabiliser and is supplied power for processing module step-down.

The device of the embodiment is externally connected with a direct current power supply of 8-28V and passes through a second voltage reduction and stabilization module of DC-DC. The second buck-regulator module in this embodiment is a switching regulator of MP4462 type, the input voltage is 4.5V-36V, the output voltage is controlled at 5V, and the second buck-regulator module supplies power to the two analog switches.

The LDO voltage stabilizer reduces the 5V current output from the second voltage reduction and stabilization module to 3.3V and supplies power to the processing module.

The first branch is directly connected with a plurality of first voltage-reducing and voltage-stabilizing modules which are connected in parallel, each first voltage-reducing and voltage-stabilizing module is also provided with a power supply conversion module, an input power supply is input into a corresponding power supply output port after being subjected to voltage reduction by the voltage-reducing and voltage-stabilizing modules, and the output voltage is regulated by the power supply conversion modules.

It can also be seen that an ESD protection module is provided on each fixed port.

Furthermore, the device also comprises an interactive key, and the processing module and the analog switch are controlled by the interactive key.

In some embodiments, the power supply system is powered by DC 8-28V, and eight independent MP2456GJ-Z power management chips are used for providing power and protection for each circuit of the to-be-burned and tested module, and the chips can provide 0.5A of current for the system and have a switching frequency of 1.2MHz, so that the power supply conversion efficiency is effectively improved. The output voltage of the circuit is adjustable, external devices can be selected by a designer, more selectivity is provided, the redundancy of BOM is improved, and an independent jumper cap is arranged at the output end of each circuit to select whether the output voltage is 3.3V or 5V so as to adapt to RF modules with different power supply voltage ranges.

In some embodiments, the serial ports 0-7 are 8 serial ports switched by the serial port of the MCU through the analog switch IC, and the TXD and RXD are cross-connected to eight RF modules to be tested and burned.

The SWD0-SWD7 are eight paths of SWD burning ports switched by SWDIO and SWCLK of an externally-connected burner through an analog switch IC, and the SWDIO and the SWCLK are connected to eight RF modules to be tested and burned in a same name.

The input 8-28V direct current is reduced to 5V through the DC-DC second voltage reduction and stabilization module to supply power to the analog switch IC, and the 5V direct current is reduced to 3.3V through the LDO voltage stabilizer to supply power to the MCU control logic circuit. An ESD diode is added to each output port (except GND) to play a role of static electricity prevention. The analog switch IC and the MCU are core switch elements, and energy is provided by the second buck and voltage stabilization module and the LDO voltage stabilizer.

The SWD burn-in interface external connection burner is controlled to be selectively conducted from the SWD0-SWD7 through the processing module, and therefore cyclic burn-in of eight RF modules can be achieved in a time-sharing mode. The principle of serial port communication CH0-CH7 is the same as the burning time sharing principle.

Each module to be burned and tested corresponds to one LED lamp, and the LED lamp indicates the state of a certain specified module (waiting, waiting for burning, burning in the middle, finishing burning, failing burning and testing serial port communication) in a flashing mode controlled by the processing module.

The burning port and the communication port are bridged by a gate circuit and matched with an LED lamp to indicate whether the communication state is in the current state or not and whether the equipment is abnormal or not. The on and off of the analog switch is controlled by the processing module logic.

In some embodiments, two interactive keys are arranged on the PCB of the whole device, and the interactive keys include a first key and a second key. The first key and the second key are connected to GPIOs of the processing module, and the functions can be customized.

The power output port arranged in the embodiment has two functions, one is that when the circuit is convenient to modify and the external module is added, the power can be directly introduced from the outside without additionally configuring a power supply; and secondly, when the system is insufficient in power supply, emergency power supply can be supplied to the equipment from the system.

The middle part of the PCB is provided with a DC-DC power supply array which is responsible for supplying 5V/3.3V power to eight independent modules, as shown in FIG. 12, a circuit diagram of a single power supply module is shown, and the eight power supply circuits have the same logic and structure. The eight independent power supply modules simultaneously provide protection for the modules to a certain degree, so that the failure of one module does not affect the burning and testing of other modules. The PCB is provided with eight serial ports and eight SWD burning ports, and the two ports are all shared by one path and eight paths in a time-sharing manner.

The present invention is not limited to the above-mentioned alternative embodiments, and other various products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims

1. RF module burns record and test controlling means based on analog switch IC, its characterized in that: the power supply module is connected with an external power supply to supply power to the processing module and the interface control module after voltage reduction and voltage stabilization;

2. The analog switch IC based RF module burning and testing control device of claim 1, wherein: the fixed port comprises a power output port, a TX/RX serial port and an SWD download port, and two module switches are arranged to respectively correspond to the on/off control of the TX/RX serial port and the SWD download port.

3. The analog switch IC based RF module burning and testing control device of claim 2, wherein: the power supply module is provided with a first branch, the first branch is provided with a first voltage reduction and stabilization module and a power supply conversion module, an input power supply is reduced in voltage by the voltage reduction and stabilization module and then input into a corresponding power supply output port, and the power supply conversion module is used for regulating output voltage.

4. The analog switch IC based RF module burning and testing control device of claim 3, wherein: the first branch circuit comprises a plurality of output circuits connected in parallel, and a voltage reduction and stabilization module and a power supply conversion module are respectively arranged on a single output circuit.

5. The analog switch IC based RF module programming and testing control device of any of claims 2-4, wherein: and an ESD electrostatic protection module is arranged on the fixed port.

6. The analog switch IC based RF module burning and testing control device of claim 3, wherein: the power supply module comprises a second branch, the second branch is provided with a second voltage reduction and stabilization module and an LDO voltage stabilizer, the second voltage reduction and stabilization module reduces voltage and supplies power to the analog switch, and the second voltage reduction and stabilization module processes the voltage and supplies power to the processing module.

7. The analog switch IC based RF module programming and testing control device of any of claims 2-4, wherein: the device also comprises an interactive key, and the interactive key controls the processing module and the analog switch.

8. The analog switch IC based RF module programming and testing control device of any of claims 2-4, wherein: and the TX/RX serial port and the SWD download port are provided with LED lamps for indicating the working state, and the LED lamps are controlled by the control module to flash.

9. The analog switch IC based RF module programming and testing control device of any of claims 2-4, wherein: and the input port is connected with the analog switch and is connected with external burning equipment through the input port.