CN218783807U - Detection circuit and detection device - Google Patents

Abstract

The application discloses a detection circuit and a detection device. The detection circuit comprises a control module, an analog switch module and a module to be detected which are connected in sequence, the control module is connected with the module to be detected and used for providing a switch signal for the analog switch module, the analog switch module is used for enabling the control module to communicate with the module to be detected according to the switch signal, and the control module is further used for providing a radio frequency signal for the module to be detected through the analog switch module and detecting the working state of the module to be detected. In the detection circuit of this application, through the setting of control module group, analog switch module and the module that awaits measuring, the anti-interference test of the realization module peripheral hardware that can be high-efficient, low-cost, and be convenient for production and research and development realize.

Description

Detection circuit and detection device

Technical Field

The present application relates to the field of communications, and in particular, to a detection circuit and a detection apparatus.

Background

Along with thing networking application product is more and more, is subject to the restriction of thing networking application product space, and its antenna is more and more close from the peripheral hardware interface, leads to the antenna to receive the interference of peripheral hardware interface easily, leads to the efficiency of antenna not good, and equally, its inside wireless communication module also easily receives the interference of antenna and leads to the work unusual easily, and in the correlation technique, mainly adopt signal generator to realize the test through conduction interference peripheral hardware interface, and the test mode that adopts signal generator is with higher costs and time is longer.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, the present application needs to provide a detection circuit and a detection device.

The detection circuit comprises a control module, an analog switch module and a module to be detected, wherein the control module is respectively connected with the module to be detected and the analog switch module, and the analog switch module is connected with the module to be detected;

the control module group be used for to analog switch module provides switching signal, analog switch module be used for according to switching signal makes the control module group with the module communication that awaits measuring, the control module group still be used for through analog switch module to the module that awaits measuring provides radiofrequency signal, and detects the operating condition of the module that awaits measuring.

In some embodiments, the control module comprises:

the first control unit is connected with the analog switch module and used for providing a switch signal for the analog switch module;

and the antenna unit is connected with the analog switch module and is used for providing radio frequency signals to the analog switch module.

In some embodiments, the first control unit includes a plurality of signal output interfaces, and the plurality of signal output interfaces are respectively connected to the analog switch modules.

In some embodiments, the analog switch module includes a plurality of switch units, each of the switch units including:

an input terminal connected to the antenna unit;

the output end is connected with the module to be tested;

and the control end is connected with the signal output interface.

In some embodiments, the module under test comprises:

a plurality of peripheral pins, each of the peripheral pins connected to one of the output terminals.

In some embodiments, the number of the plurality of signal output interfaces, the number of the plurality of switch units, and the number of the plurality of peripheral pins are the same and are in a one-to-one correspondence relationship.

In some embodiments, the module under test further comprises:

and the first asynchronous serial communication interface is connected with the module to be tested.

In some embodiments, the module under test further comprises:

a second asynchronous serial communication interface connected to the control module.

In some embodiments, the control module further comprises:

and the second control unit is connected with the antenna unit and is used for adjusting the radio-frequency signals output by the antenna unit.

The embodiment of the application also provides a detection device which comprises the detection circuit.

In the detection circuitry and detection device of this application embodiment, provide switching signal through the control module group to analog switch module, make analog switch module closed, thereby control module group and the module communication that awaits measuring, make the control module group can provide radio frequency signal to the module that awaits measuring through analog switch module, thereby can simulate the module that awaits measuring and establish the interface and pass through the leading-in wireless signal of coupling or conduction in the actual work, and simultaneously, can detect the module that awaits measuring under radio frequency signal's influence, the operating condition of the module that awaits measuring, thus, the control module group can be high-efficient, the low-cost realization is to the anti-interference test of the module that awaits measuring, the production and the research and development realization of the module that awaits measuring of being convenient for, and, the control module group can carry at any time, be convenient for get rid of the problem that the module that awaits measuring produced at any time.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a block schematic diagram of a detection circuit according to an embodiment of the present application.

Fig. 2 is a schematic diagram of another module of the detection circuit according to the embodiment of the present application.

Fig. 3 is a schematic diagram of another module of the detection circuit according to the embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Please refer to fig. 1 and fig. 2, the present application provides a detection circuit 10, the detection circuit 10 includes a control module 11, an analog switch module 13 and a module to be detected 15, the control module 11 is respectively connected to the analog switch module 13 and the module to be detected 15, and the analog switch module 13 is connected to the module to be detected 15.

The control module 11 is used for providing a switch signal for the analog switch module 13, the analog switch module 13 is used for enabling the control module 11 to communicate with the module to be tested 15 according to the switch signal, and the control module 11 is further used for providing a radio frequency signal for the module to be tested 15 through the analog switch module 13 and detecting the working state of the module to be tested 15.

In the detection circuit 10 of the embodiment of the present application, through control module 11, analog switch module 13 and the setting of module 15 to be tested, control module 11 can provide switching signal to analog switch module 13, analog switch module 13 is closed according to switching signal, thereby control module 11 communicates with module 15 to be tested, make control module 11 accessible analog switch module 13 provide radio frequency signal to module 15 to be tested, thereby can simulate module 15 to be tested and establish the interface in actual work and pass through coupling or conduct leading-in radio signal, and simultaneously, can detect module 15 to be tested under radio frequency signal's influence, whether the operating condition of module 15 to be tested is unusual, so, control module 11 can be high-efficient, the anti-interference test of module 15 to be tested of low-cost realization, thereby relevant personnel can carry out corresponding improvement to module 15 to be tested according to the test result of the anti-interference test of module 15 to be tested, be convenient for the production and research and development of module 15 to be tested realize, and control module 11 can carry at any time, be convenient for getting rid of the problem that module 15 to be tested produced at any time.

Specifically, the module 15 to be tested can be an internet of things application product, that is, in the detection circuit 10 of the embodiment of the present application, an interference test condition of the internet of things application product can be detected.

The operating state of the module under test 15 may include an off state, a transmitting state, and a low power consumption state.

The control module 11 can provide the radio frequency signals with different frequency bands and different powers to the module 15 to be tested, so as to test the working state of the module 15 to be tested under the radio frequency signals with different frequency bands and powers of the module 15 to be tested. For example, 1 to 2 frequency bands are respectively selected in each of the high, medium and low frequency bands, and the radio frequency signals with equal power are respectively and sequentially transmitted to the module to be tested 15, so as to detect whether the working state of the module to be tested 15 in each of the high, medium and low frequency bands is abnormal, and for example, the radio frequency signals with equal frequency and different power are respectively and sequentially transmitted to the module to be tested 15, so as to determine whether the working state of the module to be tested 15 under the influence of the radio frequency signals with different power is abnormal.

Referring to fig. 2, the control module 11 includes a first control unit 111 and an antenna unit 112, wherein the first control unit 111 is connected to the analog switch module 13 and is configured to provide a switch signal to the analog switch module 13 so as to close the analog switch module 13. The antenna unit 112 is connected to the analog switch module 13 and configured to provide a radio frequency signal to the analog switch module 13, so that when the analog switch module 13 is closed, the antenna unit 112 transmits the radio frequency signal to the module to be tested 15 through the analog switch module 13, and thus the influence of the radio frequency signal on the working state of the module to be tested 15 can be detected.

In some embodiments, the first control unit 111 includes a plurality of signal output interfaces 1111, and the plurality of signal output interfaces 1111 are respectively connected to the analog switch module 13. The analog switch module 13 includes a plurality of switch units 131, each switch unit 131 is electrically connected to one signal output interface 1111, that is, the number of the switch units 131 is the same as the number of the signal output interfaces 1111, and is in a one-to-one correspondence relationship, the number of the switch units 131 is not limited, and the first control unit 111 may respectively provide a switch signal to the corresponding switch unit 131 through each signal output interface 1111, so as to control the corresponding switch unit 131 to be turned on.

Specifically, the switch unit 131 may be, but is not limited to, a single-pole multi-throw switch. Each switch unit 131 includes an input terminal, a control terminal and an output terminal, wherein the input terminal is connected to the antenna unit 112, the output terminal is connected to the module 15 to be tested, and the control terminal is connected to the signal output interface 1111. The first control unit 111 may provide a switching signal to the corresponding switch unit 131 through each signal output interface 1111, and when the switch unit 131 receives the switching signal, the switch unit 131 is turned on, for example, in some examples, the switch unit 131 includes a first switch unit k1, a second switch unit k2, a third switch unit k3, and a fourth switch unit k4, if the fourth switch unit k4 receives the switching signal transmitted by the corresponding signal output interface 1111, that is, the switch signal 4 is turned off, the antenna unit 112 may transmit a radio frequency signal to the module to be tested 15 through the fourth switch unit k4, and if the second switch unit k2 receives the switching signal transmitted by the corresponding signal output interface 1111, that is, the switch signal 2 is turned off, the antenna unit 112 may transmit the radio frequency signal to the module to be tested 15 through the second switch unit k 2. Thus, the antenna unit 112 can transmit the rf signal to the module under test 15 through the closed switch unit 131.

In some embodiments, the module 15 to be tested includes a plurality of peripheral pins 151, and each peripheral pin 151 is connected to an output terminal, that is, the number of the plurality of peripheral pins 151 is the same as the number of the plurality of switch units 131, and is in a one-to-one correspondence relationship, so that the number of the plurality of signal output interfaces 1111, the number of the plurality of switch units 131, and the number of the plurality of peripheral pins 151 are the same, and are in a one-to-one correspondence relationship. The peripheral pin 151 is used for receiving the rf signal output by the output terminal.

Referring to fig. 3, for example, in some examples, the switch unit 131 includes a first switch unit k1, a second switch unit k2, a third switch unit k3, and a fourth switch unit k4, the peripheral pin 151 includes a first peripheral pin L1, a second peripheral pin L2, a third peripheral pin L3, and a fourth peripheral pin L4 corresponding to the switch unit 131, if the fourth switch unit k4 receives a switch signal transmitted by the corresponding signal output interface 1111, that is, the switch signal 4 is turned off, the antenna unit 112 may transmit a radio frequency signal to the fourth peripheral pin L4 through the fourth switch unit k4, and if the second switch unit k2 receives a switch signal transmitted by the corresponding signal output interface 1111, that is, the switch signal 2 is turned off, the antenna unit 112 may transmit a radio frequency signal to the second peripheral pin L2 through the second switch unit k 2. In this way, the antenna unit 112 can transmit the rf signal to the peripheral pin 151 through the closed switch unit 131.

Specifically, the module under test 15 may include a plurality of functional devices, each of which may implement a corresponding function, and each of which may be electrically connected to one of the peripheral pins 151. The control module 11 may send a switch signal to the analog switch module 13, so as to control a switch unit 131 in the analog switch module 13 to be closed, and after the switch unit 131 is closed, the antenna unit 112 may transmit the radio frequency signal to the module 15 to be tested through the analog switch module 13, so as to detect the influence of the radio frequency signal on the working state of the module 15 to be tested.

In some embodiments, the control module 11 further includes a first asynchronous serial communication interface 114, and the first asynchronous serial communication interface 114 is connected to the module under test 15 and is used for querying an operating status of the module under test 15, so as to determine whether the module under test 15 operates normally.

It should be noted that the first Asynchronous serial communication interface 114 may be a Universal Asynchronous Receiver/Transmitter (UART), which is a Universal serial data bus for Asynchronous communication. The bus is in bidirectional communication, and full duplex transmission and reception can be realized. The UART converts data to be transmitted between serial communication and parallel communication.

The operating state of the module under test 15 may include an off state, a launch state, and a low power consumption state. The first asynchronous serial communication interface 114 can transmit an AT instruction to the module 15 to be tested, and the module 15 to be tested can return the current working state to the first asynchronous serial communication interface 114 according to the AT instruction, so as to query the working state of the module to be tested. It is understood that the AT command is a command applied to connection and communication between the terminal device and the PC application.

In some embodiments, the module under test 15 further includes a second asynchronous serial communication interface 152, and the second asynchronous serial communication interface 152 is connected to the control module 11 and is used for sending the operating status to the control module 11. Specifically, the second asynchronous serial communication interface 152 is connected to the first asynchronous serial communication interface 114 for transmitting the operating status to the first asynchronous serial communication interface 114.

In some embodiments, the control module 11 further includes a second control unit 113, and the second control unit 113 is electrically connected to the antenna unit 112 and is configured to adjust the radio frequency signal output by the antenna unit 112. The second control unit 113 may have a python script or other scripts built therein for controlling the antenna unit 112 to output rf signals with different frequency bands and different powers.

The embodiment of the present application further provides a detection apparatus, which includes the detection circuit 10 of the foregoing embodiment.

In the description of the present specification, reference to the description of "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The detection circuit is characterized by comprising a control module, an analog switch module and a module to be detected, wherein the control module is respectively connected with the module to be detected and the analog switch module;

the control module group be used for to analog switch module provides switching signal, analog switch module be used for according to switching signal makes the control module group with the module communication that awaits measuring, the control module group still be used for through analog switch module to the module that awaits measuring provides radiofrequency signal, and detects the operating condition of the module that awaits measuring.

2. The detection circuit of claim 1, wherein the control module comprises:

the first control unit is connected with the analog switch module and used for providing a switch signal for the analog switch module;

and the antenna unit is connected with the analog switch module and is used for providing radio frequency signals to the analog switch module.

3. The detection circuit of claim 2, wherein the first control unit comprises a plurality of signal output interfaces, and the plurality of signal output interfaces are respectively connected to the analog switch modules.

4. The detection circuit of claim 3, wherein the analog switch module includes a plurality of switch cells, each of the switch cells including:

an input end connected to the antenna unit;

the output end is connected with the module to be tested;

and the control end is connected with the signal output interface.

5. The detection circuit of claim 4, wherein the module under test comprises:

a plurality of peripheral pins, each of the peripheral pins connected to one of the output terminals.

6. The detection circuit of claim 5, wherein the number of the plurality of signal output interfaces, the number of the plurality of switch units, and the number of the plurality of peripheral pins are the same and in a one-to-one correspondence.

7. The detection circuit of claim 1, wherein the control module comprises:

and the first asynchronous serial communication interface is connected with the module to be tested.

8. The detection circuit of claim 1, wherein the module under test comprises:

the second asynchronous serial communication interface is connected with the control module.

9. The detection circuit of claim 2, wherein the control module further comprises:

and the second control unit is connected with the antenna unit and is used for adjusting the radio-frequency signal output by the antenna unit.

10. A detection device comprising a detection circuit according to claims 1-9.

Images