CN217787301U - Test system for wireless data unit and foreign invasion relay combination unit - Google Patents

Abstract

The application discloses wireless data unit and foreign object infringe limit relay combined unit's test system, its wireless data unit includes: a mounting base adapted to be mounted to a base and configured with a plurality of conductor portions, each conductor portion being in electrical communication with a cable connection point on the base; a circuit board electrically connected to each of the conductor portions; the wireless transceiving module is arranged on the circuit board, receives the test signal sent by the upper computer, and is in communication connection with the upper computer, the level excitation module and the level acquisition module to form a signal conduction and feedback path; the level excitation module is used for receiving the test signal sent by the wireless transceiving module and sending a high level signal to at least one conductor part under the excitation of the test signal; and the level acquisition module receives the level signal fed back by each conductor part and forwards the level signal to the upper computer through the wireless transceiving module. The number of the wireless data units can be expanded at will, and the wireless data unit is suitable for foreign invasion limit relay combination units of any type and specification.

Description

Test system for wireless data unit and foreign invasion relay combination unit

Technical Field

The application relates to the field of railway disaster prevention monitoring systems, in particular to a wireless data unit and a test system comprising a foreign invasion limit relay combination unit.

Background

With the rapid development of railway traffic, railway disaster prevention systems related to the railway traffic have been widely put into use. The railway disaster prevention system is responsible for monitoring disaster conditions such as foreign matter invasion, wind, rain and the like. And for disaster information caused by foreign matter intrusion, the railway disaster prevention system carries out information interaction with the train control system through the foreign matter intrusion relay combination unit to realize the operation control of the train control system. Therefore, the safety and reliability of the wiring of the foreign invasion limiting relay combination unit become the key in the railway disaster prevention safety monitoring. The foreign matter invasion limiting relay combination unit is usually placed in a cabinet, a plurality of railway signal relay bases are arranged on one surface of the cabinet, railway signal relays are arranged on the bases, and cables used for connecting all modules are arranged on the other surface of the cabinet. The wiring means connecting the cable and the welding terminal on the base according to a design drawing. In order to detect the safety and reliability of the wiring, whether the connection between the cable and the base meets the requirements of design drawings needs to be tested by a certain means.

At present, in a wiring detection scheme for a foreign invasion limiting relay combination unit, for a product including a certain number of detection modules (for example, all detection modules are fixed on one detection board), the detection modules determine whether each relay is turned on or off as required by sending and receiving signals. For the foreign matter invasion limit relay combination unit, the number of railway signal relays is not fixed and not constant, and the number of required detection modules is not fixed and not constant, at the moment, the existing product is adopted to carry out wiring detection on the foreign matter invasion limit relay combination unit, and the situation that the number of the detection modules is not matched possibly exists, so that the adaptability of the existing wiring detection product is poor.

Disclosure of Invention

What this application will solve is that the relatively poor problem of adaptability that current foreign object invades limit relay combination unit's wiring detection scheme exists, for this reason, this application has provided a wireless data unit and has invaded limit relay combination unit's test system including its foreign object.

In view of the above technical problems, the present application provides the following technical solutions:

an embodiment of the present application provides a wireless data unit, including:

the mounting seat is matched with a base of the railway signal relay, the first surface of the mounting seat is suitable for being mounted on the base, the mounting seat is provided with a plurality of conductor parts, and one end of each conductor part is electrically communicated with a cable connection point on the base; the circuit board is arranged on the second surface of the mounting seat and is electrically communicated with the second end of each conductor part; the wireless transceiving module is arranged on the circuit board and used for receiving the test signal sent by the upper computer; the wireless transceiver module is in communication connection with the upper computer, the level excitation module and the level acquisition module to form a signal conduction and feedback path; the level excitation module is arranged on the circuit board, is electrically communicated with each conductor part, and sends a high-level signal to at least one conductor part under the excitation of the test signal after receiving the test signal sent by the wireless transceiving module; and the level acquisition module is arranged on the circuit board and is electrically communicated with each conductor part, and the level acquisition module receives the level signal fed back by each conductor part and forwards the level signal to the upper computer through the wireless transceiving module.

In the above scheme, the wireless data unit comprises a wireless transceiver module, a level excitation module and a level acquisition module which are required by wiring detection of the foreign invasion limiting relay combination unit, and the level excitation module and the level acquisition module are electrically communicated with a cable connection point on a base of the foreign invasion limiting relay combination unit through a conductor part on a circuit board. Because this structure adopts and railway signal relay base assorted mount pad, can conveniently with on its plug-in connection base, consequently can according to the actual quantity of railway signal relay select the wireless data unit of corresponding number directly plug-in onto the cabinet body that the limit relay combined unit was invaded to the foreign matter can, can expand at will, make its foreign matter that is applicable to any type and specification invade limit relay combined unit.

In some embodiments of the present application, the wireless data unit further includes an insulating housing covering the mounting base, and encapsulating the circuit board, the wireless transceiver module, the level driver module, and the level acquisition module inside the insulating housing. In the above solution, the casing is arranged to protect each electrical component in the wireless data unit, and the casing has an insulating property to reduce electromagnetic interference to the wireless data unit. Meanwhile, the insulating shell can enable the appearance of the wireless data unit to be more attractive.

In some embodiments of the present application, the wireless data unit further includes a mounting member, and the mounting member has a first mounting hole formed thereon; the edge of the insulating shell extends vertically outwards to form a connecting surface, a second mounting hole is formed in the connecting surface, and the second mounting hole is opposite to the first mounting hole; the mounting piece passes behind second mounting hole and the first mounting hole with insulating casing and mount pad fixed connection. In above scheme, utilize the installed part to realize being connected with dismantling of mount pad insulating casing, can conveniently dismantle when needs overhaul or change its inside electric elements.

In some embodiments of the present application, the wireless data unit further includes a pull ring, a frustum of a pyramid is formed on the upper surface of the insulating housing, and the frustum of a pyramid is matched with a fixing ring preset on the base; the prismatic table is internally provided with a jack, and two ends of the pull ring are respectively inserted into the jacks. In above scheme, after wireless data unit inserted on the base, utilize solid fixed ring cover on the base to establish insulating casing's surface, can strengthen the connection stability between wireless data unit and the base, simultaneously, thereby solid fixed ring is matchd with the terrace with edge and is guaranteed solid fixed ring by the chucking, when wireless data unit was dismantled to needs, can directly mention the pull ring in order to flick solid fixed ring open can, improved the convenience of operation.

In some embodiments of the present application, the insulating housing of the wireless data unit is a transparent shell and the surface of the prism table is configured with an information recording area. In the above scheme, the arrangement of the transparent shell can enable an operator to conveniently observe the internal structure, the information recording area can conveniently paste the information parameters recorded with the related attributes of the wireless data unit, and the user can conveniently select the wireless data unit.

In some embodiments of the present application, the insulating housing of the wireless data unit forms a cable jack; the power lines of the wireless transceiving module, the level excitation module and the level acquisition module are all connected to the cable jack. In the above aspect, the external power supply can be directly connected to the power lines of the respective electrical components inside the wireless communication module by arranging the cable jack for each wireless data unit, so that the same ground voltage can be applied to all the wireless data units, and the wiring detection result can have higher accuracy.

In some embodiments of the present application, a first socket into which the wireless transceiver module is inserted is disposed on a circuit board of the wireless data unit. In above scheme, can conveniently realize being connected between wireless transceiver module and the circuit board through the mode that sets up first socket, also can make things convenient for its dismantlement when wireless transceiver module needs to be changed and overhauls.

In some embodiments of the present application, the level excitation module and the level collection module of the wireless data unit are integrated into an electrical signal module, and a second socket into which the electrical signal module is inserted is disposed on the circuit board. In above scheme, level excitation module and level collection module are integrated to single signal of telecommunication module, can promote whole wireless data unit's integrated level, can conveniently set up signal of telecommunication module on the circuit board through the mode that sets up the second socket, also can conveniently dismantle it when needing to be changed signal of telecommunication module.

In some embodiments of the present application, the number of electrical signal modules in the wireless data unit is determined according to the number of cable connection points; the number of the second sockets is consistent with the number of the electric signal modules. In the above scheme, the number of the electrical signal modules can be adaptively selected according to the number of the cable connection points, so that the universality of the wireless data unit is further improved.

The embodiment of the present application further provides a test system for a foreign object intrusion relay combination unit, including the wireless data unit provided in any one of the above schemes, and:

an upper computer;

the wireless data units are correspondingly inserted into the base of the foreign invasion limiting relay combination unit to be tested; the wireless communication module is in communication connection with the upper computer and the wireless transceiving module in the wireless data unit; the wireless communication module transmits the test instruction sent by the upper computer to the wireless transceiving module and receives the level signal fed back by the wireless transceiving module, and the wireless communication module sends the level signal to the upper computer. In the above scheme, the wireless data unit is expandable and is determined according to the number of the actual relays on the foreign object intrusion relay combination unit, so that the wireless data unit is suitable for the wiring detection of foreign object relay combination units with various specifications.

Compared with the prior art, the technical scheme of the application has the following technical effects:

the application provides a wireless data unit and including its foreign object infringes limit relay combination unit's test system, when invading limit relay combination unit's wiring to the foreign object and detecting, have high efficiency and accuracy, because adopt the mode that wireless data unit disect insertion went into the railway signal relay's on the cabinet body base to detect, thereby the quantity of wireless data unit can be selected at will, can invade limit relay combination unit to various types of foreign object and detect, have splendid expansibility.

Drawings

The objects and advantages of this application will be appreciated by the following detailed description of the preferred embodiments thereof, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic front-side structure diagram of a wireless data unit according to an embodiment of the present application;

fig. 2 is a schematic side view of a wireless data unit according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a wireless data unit according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a wireless data unit provided in an embodiment of the present application after being assembled with an insulating housing;

FIG. 5 is an exploded view of the structure shown in FIG. 4;

fig. 6 is a schematic view illustrating an assembly relationship between a wireless data unit and a cabinet in a test system for a foreign invasion relay combination unit according to an embodiment of the present application;

FIG. 7 is a signal flow diagram of a test system for a foreign intrusion relay combination unit according to an embodiment of the present application;

fig. 8 is a schematic diagram of a wiring connection relationship according to an embodiment of the present application.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.

In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

The embodiment of the present application provides a wireless data unit, as shown in fig. 1 to fig. 3, which includes a mounting base 101, a conductor portion 102, a circuit board 103, a wireless transceiver module 104, a level excitation module, and a level acquisition module. The mounting seat 101 is matched with a base of a railway signal relay, a first surface of the mounting seat 101 is suitable for being mounted on the base, the mounting seat 101 is provided with a plurality of conductor parts 102 (the conductor parts 102 can be metal probes), and one end of each conductor part 102 is electrically communicated with a cable connecting point on the base; a circuit board 103 disposed on the second surface of the mounting base 101 and electrically connected to the second end of each conductor portion 102; the wireless transceiver module 104 is arranged on the circuit board 103 and used for receiving a test signal sent by the upper computer; the wireless transceiver module 104 is in communication connection with the upper computer, the level excitation module and the level acquisition module to form a signal conduction and feedback path. The level excitation module and the level acquisition module can be integrated into a unified electric signal module, the level excitation module is arranged on the circuit board 103 and is electrically communicated with each conductor part 102, and after the level excitation module receives a test signal sent by the wireless transceiving module 104, the level excitation module sends a high level signal to at least one conductor part 102 under the excitation of the test signal; the level acquisition module is disposed on the circuit board 103 and electrically connected to each conductor portion 102, and receives the level signal fed back by each conductor portion 102 and forwards the level signal to the upper computer through the wireless transceiver module 104. The level excitation module and the level acquisition module are integrated into a single electric signal module, so that the integration level of the whole wireless data unit can be improved, in specific implementation, the mounting seat 101 can select the mounting seat which is completely the same as that of the existing railway signal relay, only the electric elements on the railway signal relay are removed, and the wireless transceiving module 104 and the electric signal module are arranged according to the structure shown in fig. 3. In addition, the wireless transceiver module 104 and the electrical signal module may be implemented by using existing functional modules on the market, such as a 4G/5G communication module, and the electrical signal module is an existing high-level trigger and sampling circuit.

In the above solution, the wireless data unit includes a wireless transceiver module 104, a level excitation module and a level acquisition module required for wiring detection of the foreign invasion relay combination unit, and the electrical components on the circuit board 103 are electrically connected to the cable connection points on the base of the foreign invasion relay combination unit through the design of the conductor part 102. This structure adopts with railway signal relay base assorted mount pad 101, can conveniently with on it pegs graft the base, consequently can select the wireless data unit of corresponding number to directly insert the cabinet body that the limit relay combination unit was invaded to foreign matter according to railway signal relay's actual quantity can, can expand at will, make its foreign matter that is applicable to any type and specification invade limit relay combination unit.

In some embodiments of the present application, as shown in fig. 3, the circuit board 103 is provided with a first socket 1041 into which the wireless transceiver module 104 is inserted. The first socket 1041 is arranged to facilitate connection between the wireless transceiver module 104 and the circuit board 103, and the wireless transceiver module 104 can be detached conveniently when needing to be replaced and maintained. Further, as shown, a second socket into which the power signal module is inserted is provided on the circuit board 103. The electric signal module can be conveniently arranged on the circuit board by the mode of arranging the second socket, and can also be conveniently detached when the electric signal module needs to be replaced. Further, the number of electrical signal modules is determined according to the number of cable connection points; the number of the second sockets is consistent with the number of the electric signal modules. As shown in fig. 3, the electrical signal module includes two, namely, a first electrical signal module 105 and a second electrical signal module 106, and correspondingly, the second socket includes two, namely, a first signal socket 1051 for plugging the first electrical signal module 105 and a second signal socket 1061 for plugging the second electrical signal module 106. In the above scheme, the number of the electrical signal modules can be adaptively selected according to the number of the cable connection points, so that the universality of the wireless data unit is further improved. In general, there are 28 cable connection points on the base, and the level excitation module and the level collection module in the electrical signal module may only drive or collect 16 signals at most, and the electrical signal module may only connect 16 conductor parts, in this case, the structure shown in this embodiment may be adopted, and two electrical signal modules, i.e. the first electrical signal module 105 and the second electrical signal module 106 in the figure, may be provided. In a specific implementation, if the number of cable connection points is less than 16, only one electrical signal module, i.e., the first electrical signal module 105 or the second electrical signal module 106, may be used, and if the number of cable connection points exceeds 32, the number of electrical signal modules may be increased. Namely, the number of the electric signal modules is adaptively selected according to the number of the cable connection points, thereby further improving the universality of the wireless data unit.

In some embodiments, as shown in fig. 3 to 5, the wireless data unit further includes an insulating housing 201, and the insulating housing 201 covers the mounting base 101, and encapsulates the circuit board 103, the wireless transceiver module 104, the level excitation module, and the level collection module. The insulating shell 201 can protect each electric element in the wireless data unit, and the shell has insulating property to reduce electromagnetic interference to the wireless data unit. Meanwhile, the insulating housing 201 can make the appearance of the wireless data unit more beautiful.

Further, as shown in the figure, the wireless data unit further includes a mounting part 109, and a first mounting hole 108 is formed on the mounting seat 101; the edge of the insulating housing 201 extends vertically outwards to form a connection surface 205, a second mounting hole 110 is formed on the connection surface 205, and the second mounting hole 110 is opposite to the first mounting hole 108; the mounting member 109 passes through the second mounting hole 110 and the first mounting hole 108 to fixedly connect the insulating housing 201 with the mounting base 101. In the above scheme, the mounting part 109 is used to detachably connect the insulating housing 201 and the mounting seat 101, so that the electric elements inside the insulating housing can be conveniently overhauled.

In some preferred schemes, the wireless data unit may further include a pull ring 203, the upper surface of the insulating housing 201 is formed with a frustum 202, as shown in fig. 6, the frustum 202 is matched with a fixing ring 301 preset on the base, a jack is formed in the frustum 202, and two ends of the pull ring 203 are respectively inserted into the jacks, so that a structure that the pull ring 203 rotates around the central axis of the through hole of the frustum 202 can be realized. In above scheme, after wireless data unit inserts on the base, utilize solid fixed ring 301 cover on the base to establish insulating casing 201's surface, can strengthen the connection stability between wireless data unit and the base, simultaneously, thereby solid fixed ring 301 matches with terrace with edge 202 and guarantees that solid fixed ring 301 is blocked tightly, when the wireless data unit is dismantled to needs, can directly mention pull ring 203 in order to with solid fixed ring 301 bullet open can, improved the convenience of operation. In addition, an information recording area is disposed on the surface of the prism table 202. In the above solution, the information recording area can be conveniently pasted with the information parameters recorded with the relevant attributes of the wireless data unit, for example, the information parameters record which position the wireless data unit should be installed on the base, which type of railway signal relay corresponds to, etc., which facilitates the installation of the wireless data unit by the user.

In some aspects, the insulating housing 201 of the wireless data unit is a transparent shell. Wherein, the selected structure of the insulating shell 201 can be the same as the shell structure of the railway signal relay. The setting of transparent shell can make operating personnel conveniently observe the inner structure of wireless data unit, is convenient for distinguish it with railway signal relay.

Further preferably, in the wireless data unit, the insulating housing 201 forms a cable jack 204; the power lines of the wireless transceiver module 104, the level excitation module and the level collection module are all connected to the cable jack 204. In a specific implementation, the circuit board 103 may be provided with the power plug 107 of each of the above electrical components, one end of the power cord 1071 is electrically connected to the power plug 107, and the other end of the power cord 1071 is electrically connected to the cable jack 204. In the above configuration, the cable jack 204 is disposed for each wireless data unit, and thus, the external power supply can be directly connected to the power supply line 1071 of each electrical component inside the wireless communication module, so that the same ground voltage can be applied to all the wireless data units, and the wiring detection result can be made to have higher accuracy.

In an embodiment of the present application, there is further provided a system for testing a foreign object intrusion relay combination unit, as shown in fig. 6 and 7, the system includes the wireless data unit 100 provided in any one of the above solutions, and: an upper computer 401 and a wireless communication module 402; the wireless data unit 100 comprises a plurality of wireless data units, and each wireless data unit 100 is correspondingly inserted into the base of the foreign invasion limiting relay combination unit 300 to be tested; a wireless communication module 402, which is connected with the upper computer 401 and the wireless transceiver module 104 in the wireless data unit in a communication way; the wireless communication module 402 transmits the test instruction sent by the upper computer 401 to the wireless transceiving module 104 and receives the level signal fed back by the wireless transceiving module 104, and the wireless communication module 402 sends the level signal to the upper computer 401. In the above scheme, the wireless data unit 100 is scalable, determined according to the number of actual relays on the foreign invasion relay combination unit 300, and thus it is suitable for wiring detection of foreign relay combination units of various specifications. When the upper computer 401 sends a test instruction, the working time sequence of different electric signal modules and the wireless transceiver module 104 is designed in advance, so that the same time can be ensured, and the same cable connecting point only receives level signals or only sends the level signals, so that the signals of the wireless transceiver module 104 can be received and sent at different times, and the test accuracy is ensured.

The operation of the test system of the present application will be described with reference to fig. 8. As shown in fig. 8, the wiring connection relationship in the test system is simplified to a form including only cable and cable connection points, and it is assumed that the connection of a certain system is as shown in fig. 8, where N1 to N15 denote cable connection points of the system, and L1 to L10 denote cables connecting two of the cable connection points. In the process of executing the test, the upper computer 401 stores therein a standard connection relationship and a test instruction, and the upper computer 401 also stores therein a standard level signal to be fed back from each connection point corresponding to the test instruction. The host computer 401 sends high level signals to different cable connection points by controlling different wireless data units through test instructions, then receives level signals of other cable connection points fed back by different wireless data units, and compares the feedback signals with standard level signals to determine whether the connection between the cables and the connection points is normal. For example, after N7 transmits a high level signal, N6, N8, and N9 having a connection relation therewith should feed back a high level signal, and N2 having no connection relation therewith should feed back a low level signal. Assuming that N8 does not feed back a high signal, it indicates that the connection of the cable L5 is abnormal, and the other wiring detection logics can be analogized, and are not illustrated one by one here. It is understood that the above test principle is similar to the test principle in the prior art, and thus, the description thereof is omitted.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications from the teachings herein remain within the scope of this application.

Claims (10)

1. A wireless data unit, comprising:

the mounting seat is matched with a base of the railway signal relay, a first surface of the mounting seat is suitable for being mounted on the base, the mounting seat is provided with a plurality of conductor parts, and one end of each conductor part is electrically communicated with a cable connecting point on the base;

a circuit board disposed on the second surface of the mounting base and electrically connected to the second end of each of the conductor parts;

the wireless receiving and transmitting module is arranged on the circuit board and used for receiving the test signal sent by the upper computer; the wireless transceiver module is in communication connection with the upper computer, the level excitation module and the level acquisition module to form a signal conduction and feedback path;

the level excitation module is arranged on the circuit board, is electrically communicated with each conductor part, and sends a high level signal to at least one conductor part under the excitation of the test signal after receiving the test signal sent by the wireless transceiving module;

the level acquisition module is arranged on the circuit board and is electrically communicated with each conductor part, and receives the level signal fed back by each conductor part and forwards the level signal to the upper computer through the wireless transceiving module.

2. The wireless data unit of claim 1, further comprising:

and the insulating shell is covered on the mounting seat and encapsulates the circuit board, the wireless transceiving module, the level excitation module and the level acquisition module inside the insulating shell.

3. The wireless data unit of claim 2, further comprising a mount:

a first mounting hole is formed in the mounting seat;

the edge of the insulating shell extends vertically outwards to form a connecting surface, a second mounting hole is formed in the connecting surface, and the second mounting hole is opposite to the first mounting hole;

and the mounting piece fixedly connects the insulating shell with the mounting seat after penetrating through the second mounting hole and the first mounting hole.

4. The wireless data unit of claim 2, further comprising a pull ring:

a prismatic table is formed on the upper surface of the insulating shell and matched with a fixing ring preset on the base; and a jack is arranged in the terrace with edge, and two ends of the pull ring are respectively inserted into the jack.

5. The wireless data unit of claim 4, wherein:

the insulating shell is a transparent shell, and an information recording area is configured on the surface of the prismatic table.

6. The wireless data unit of claim 2, wherein:

the insulating shell is formed into a cable jack;

and power lines of the wireless transceiving module, the level excitation module and the level acquisition module are all connected to the cable jack.

7. The wireless data unit of claim 1, wherein:

the circuit board is provided with a first socket for the wireless transceiver module to be inserted into.

8. The wireless data unit of claim 1, wherein:

the level excitation module and the level acquisition module are integrated into an electric signal module, and a second socket for inserting the electric signal module is arranged on the circuit board.

9. The wireless data unit of claim 8, wherein:

the number of the electric signal modules is determined according to the number of the cable connection points; the number of the second jacks is consistent with that of the electric signal modules.

10. A system for testing a foreign intrusion relay combination unit, comprising a wireless data unit according to any one of claims 1 to 9, and:

an upper computer;

the wireless data units are correspondingly inserted into the base of the foreign body intrusion relay combination unit to be tested;

the wireless communication module is in communication connection with the upper computer and the wireless transceiving module in the wireless data unit; the wireless communication module transmits the test instruction sent by the upper computer to the wireless transceiver module and receives the level signal fed back by the wireless transceiver module, and the wireless communication module sends the level signal to the upper computer.

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