CN110995370B - Detection method of wireless transmission control unit - Google Patents
Detection method of wireless transmission control unit Download PDFInfo
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- CN110995370B CN110995370B CN201911382540.XA CN201911382540A CN110995370B CN 110995370 B CN110995370 B CN 110995370B CN 201911382540 A CN201911382540 A CN 201911382540A CN 110995370 B CN110995370 B CN 110995370B
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Abstract
The invention relates to the technical field of gas meters, in particular to a detection method of a wireless transmission control unit, which comprises the following steps: s1, placing the wireless transmission control unit into a needle bed of the automatic detection tool, and pressing down a needle bed pressing plate; s2, the automatic detection tool supplies power to the wireless transmission control unit through the needle bed, the wireless transmission control unit automatically initializes, after the initialization is completed, the wireless transmission control unit sends a request for entering an automatic detection mode to the automatic detection tool through a UART port of the wireless transmission control unit, and if the request passes, the wireless transmission control unit enters the automatic detection mode; s3, in the automatic detection mode, automatically detecting the wireless transmission control unit through the automatic detection tool according to the set detection steps; and S4, storing the detection result in the automatic detection tool according to a fixed format. The invention solves the problems of high price and low working efficiency of the device in the traditional detection method.
Description
Technical Field
The invention relates to the technical field of gas meters, in particular to a detection method of a wireless transmission control unit.
Background
In order to facilitate management of a gas company and avoid meter reading at home, a Wireless Transmission Control Unit (WTCU) is generally provided in an existing gas meter to upload data information of the gas meter. The wireless transmission control unit produced by a factory generally needs to be subjected to quality detection, and the wireless transmission module can smoothly upload data information of the gas meter to a gas company.
At present, for a function detection tool of a wireless transmission control unit, the existing equipment generally adopts manual testing, each function test needs manual triggering, and the working efficiency is low. Meanwhile, when the tools detect wireless signals, Wireless Transmission Control Units (WTCUs) can interfere with each other due to the fact that a plurality of detection tools carry out wireless communication on the same frequency point, a common processing method is to purchase a darkroom shielding box to shield interference among the darkroom shielding boxes, and the darkroom shielding boxes are expensive in price. The other scheme is that Wireless Transmission Control Units (WTCUs) are arranged on different frequency points to carry out wireless communication, mutual interference cannot be caused, but the arrangement and debugging are inconvenient, mass production and assembly are not facilitated, and low working efficiency is easily caused.
Disclosure of Invention
The invention mainly aims to provide a detection method of a wireless transmission control unit, which solves the problems of high price and low working efficiency of a detection device in the traditional detection method.
In order to achieve the above object, the present invention provides a method for detecting a wireless transmission control unit, comprising the following steps:
s1, placing the wireless transmission control unit into a needle bed of the automatic detection tool, and pressing down a needle bed pressing plate;
s2, the automatic detection tool supplies power to the wireless transmission control unit through the needle bed, the wireless transmission control unit automatically initializes, after the initialization is completed, the wireless transmission control unit sends a request for entering an automatic detection mode to the automatic detection tool through a UART port of the wireless transmission control unit, and if the request passes, the wireless transmission control unit enters the automatic detection mode;
s3, in the automatic detection mode, automatically detecting the wireless transmission control unit through the automatic detection tool according to the set detection steps;
and S4, storing the detection result in the automatic detection tool according to a fixed format.
The working principle and the advantages of the invention are as follows:
1. the arrangement of the needle bed and the needle bed pressing plate can provide a stable power supply for the wireless transmission control unit for pre-detection, and meanwhile, the wireless transmission control unit is well installed and fixed, so that damage caused by poor contact during power-on detection is avoided.
2. When the automatic detection tool is used for testing a wireless transmission control unit, only the wireless transmission control unit needs to be installed on the needle bed, and then the automatic detection tool can perform automatic detection in sequence according to related detection steps, so that the detection efficiency is greatly improved, and meanwhile, the detection result is recorded in the automatic detection tool, so that convenience is provided for subsequent data lookup, and the validity of automatic detection is ensured. And the scheme of the non-darkroom shielding box is adopted for detection, so that the cost is saved.
Further, step S1 includes the following steps:
s101, scanning the unique production serial number pasted on the wireless transmission control unit, and determining the communication mode of the wireless transmission control unit.
The communication mode of distinguishing the wireless transmission control units through the difference definition of a certain bit of the unique production serial number is simple, effective and practical.
Further, the communication means includes LoRa and NB-IoT.
LoRa and NB-IoT are both low-power-consumption wide-area Internet of things technologies, are two mainstream technologies at present, and have wide application range.
Further, in step S2, if the request fails or no reply is received within the specified time, the normal operating mode is entered; the normal working mode comprises gas meter gas consumption counting detection, wireless data transmission detection and abnormity detection.
If the request does not pass or the reply is not received within the specified time, the automatic detection fails, and the normal working mode is entered.
Further, the detection step in step S3 includes key detection, valve opening detection, pulse counting detection, voltage acquisition detection, strong magnetic interference detection, and wireless communication detection in sequence.
The related functions of the detected wireless transmission control unit can be automatically detected and analyzed through key detection, valve opening detection, pulse counting detection, voltage acquisition detection, strong magnetic interference detection and wireless communication detection, so that the detection efficiency is improved. And the device that key detection, open valve detection, pulse count detect, gather voltage detection, strong magnetic interference detection and wireless communication detect and relate compares in darkroom shielded cell, and is with low costs.
Further, the detecting step in step S3 specifically includes the following steps:
s301, the wireless transmission control unit automatically presses a button to detect the button, and meanwhile, the automatic detection tool detects the closing or opening of the 4-line valve;
s302, the automatic detection tool sends a plurality of pulses to the number deduction part of the wireless transmission control unit, the wireless transmission control unit feeds back the number of the received pulses to the automatic detection tool through a UART port, and the automatic detection tool carries out detection judgment according to the number of the sent and received pulses;
s303, the automatic detection tool collects the voltage of the wireless transmission control unit, the wireless transmission control unit feeds back the detected voltage value to the automatic detection tool through the UART port, and the automatic detection tool detects and judges the feedback voltage value;
s304, the automatic detection tool simultaneously sends low levels for several seconds to the two buckling parts of the wireless transmission control unit, strong magnetic interference is simulated, and strong magnetic interference detection is carried out;
s305, the automatic detection tool sends a channel instruction to the wireless transmission control unit through the UART port, so that the wireless transmission control unit is switched to the channel, and wireless communication test is carried out.
The automatic detection tool can automatically complete related functions in the function detection process of the wireless transmission control unit, and meanwhile, according to the communication channel arranged between the automatic detection tool and the wireless transmission control unit, a plurality of automatic detection tools can work on different channels without influencing each other, so that the working efficiency is improved.
Further, the 4-wire valve comprises a simulated gas valve, a positive electrode, a negative electrode, a first feedback line and a second feedback line, wherein the positive electrode, the negative electrode, the first feedback line and the second feedback line are respectively and independently connected with the simulated gas valve and the automatic detection tool; when the automatic detection tool applies forward voltage to the anode of the simulated gas valve, the simulated gas valve is opened, and after the simulated gas valve is opened, the first feedback line and the second feedback line are conducted; when the automatic detection tool applies forward voltage to the negative electrode of the simulated gas valve, the simulated gas valve is closed, and after the simulated gas valve is closed, the first feedback line and the second feedback line are disconnected.
In the embodiment, the 4-wire valve is a simulation valve which is electrically connected with the automatic detection tool host through a connector and is used for simulating the opening and closing of the valve when the gas meter is normally used; the real application scene is simulated through the simulation valve, so that whether the wireless transmission control unit can be actually used or not is conveniently detected.
Further, before proceeding to step S2, the method further includes the steps of:
and detecting a feeder line in the needle bed, and judging whether the needle bed pressing plate is pressed down or lifted.
Whether the wireless transmission control unit on the needle bed is installed and fixed is conveniently judged.
Further, the method also comprises the following steps:
and S5, after the test is finished, the automatic detection tool is powered off, the wireless transmission control unit automatically clears the channel information of the wireless communication test, and the wireless transmission control unit enters a default channel after being powered on next time.
The communication channel information set by the wireless transmission control unit is not recorded, so that production and assembly are not influenced.
Further, the method also comprises the following steps:
and S6, after the barcode of the data uploading command is scanned, transmitting the detection data stored in the automatic detection tool to a server through network communication.
The detection data are stored to facilitate later retrieval and checking.
Drawings
Fig. 1 is a flowchart illustrating a method for detecting a wtru according to an embodiment of the present invention;
FIG. 2 is a logic control block diagram of a 4-wire valve;
fig. 3 is a logic control block diagram of the automatic detection tool.
Detailed Description
The following is further detailed by way of specific embodiments:
example (b):
a detection method of a wireless transmission control unit comprises an automatic detection tool, as shown in figure 3, comprising an automatic detection tool host, a power adapter, a code scanning gun, a needle bed and a 4-line valve;
the power adapter is used for supplying power to the automatic detection tool host, the code scanning gun, the needle bed and the wireless transmission control unit;
the needle bed is used for fixing the wireless transmission control unit and enabling the wireless transmission control unit to be electrically connected with the automatic detection tool host;
the automatic detection tool host is used for analyzing whether the simulated gas valve is closed or opened according to the 2-line feeder line in the 4-line valve; as shown in fig. 2, the 4-wire valve includes a simulated gas valve, a positive electrode, a negative electrode, a first feedback line and a second feedback line, and the positive electrode, the negative electrode, the first feedback line and the second feedback line are respectively and independently connected with the simulated gas valve and the automatic detection tool.
The automatic detection tool host is used for judging whether the needle bed pressing plate is pressed down or lifted up according to the feeder in the needle bed.
The automatic detection tool host is used for obtaining a unique production serial number pasted on each wireless transmission control unit according to the code scanning gun, and distinguishing the LoRa or NB-IoT wireless transmission control units through a certain bit of the serial number.
As shown in fig. 1, a specific flow of the detection method of the wireless transmission control unit includes the following steps:
s101, scanning the unique production serial number pasted on the wireless transmission control unit, and determining the communication mode of the wireless transmission control unit. The communication modes comprise LoRa and NB-IoT.
S1, placing the wireless transmission control unit into a needle bed of the automatic detection tool, and pressing down a needle bed pressing plate;
s2, the automatic detection tool supplies power to the wireless transmission control unit through the needle bed, the wireless transmission control unit automatically initializes, after the initialization is completed, the wireless transmission control unit sends a request for entering an automatic detection mode to the automatic detection tool through a UART port of the wireless transmission control unit, and if the request passes, the wireless transmission control unit enters the automatic detection mode; if the request does not pass or the reply is not received within the specified time, entering a normal working mode; the normal working mode comprises gas meter gas consumption counting detection, wireless data transmission detection and abnormity detection.
S3, in the automatic detection mode, automatically detecting the wireless transmission control unit through the automatic detection tool according to the set detection steps; the detection steps sequentially comprise key detection, valve opening detection, pulse counting detection, voltage acquisition detection, strong magnetic interference detection and wireless communication detection.
The detection step in step S3 specifically includes the following steps:
s301, a wireless transmission control unit automatically presses a button to perform button detection, the button is used for controlling the opening and closing of a simulation valve in the 4-line valve, and meanwhile, an automatic detection tool detects the closing or opening of the 4-line valve;
in the embodiment, the 4-wire valve is electrically connected with the automatic detection tool host through a connector and is a simulation valve for simulating the opening and closing of the valve when the gas meter is normally used; when the automatic detection tool applies forward voltage to the anode of the simulated gas valve, the simulated gas valve is opened, and after the simulated gas valve is opened, the first feedback line and the second feedback line are conducted; when the automatic detection tool applies forward voltage to the negative electrode of the simulated gas valve, the simulated gas valve is closed, and after the simulated gas valve is closed, the first feedback line and the second feedback line are disconnected. The automatic detection tool host machine judges whether the 4-line valve is closed or opened according to the conduction between the first feedback line and the second feedback line.
When the button is detected, the button is pressed, and whether the button is normal or not is judged according to the conduction between the first feedback line and the second feedback line;
when the 4-wire valve is detected, the button is pressed to open or close the 4-wire valve, and whether the 4-wire valve is normal or not is judged according to the conduction between the first feedback line and the second feedback line.
S302, the automatic detection tool sends a plurality of pulses to the wireless transmission control unit, a number deducting part (counting part) of the wireless transmission control unit is used for counting the received pulses, the wireless transmission control unit feeds back the number of the received pulses to the automatic detection tool through a UART port of the wireless transmission control unit, and the automatic detection tool carries out detection and judgment according to the number of the sent and received pulses;
s303, the automatic detection tool collects voltages at two ends of the wireless transmission control unit, the wireless transmission control unit feeds back a voltage value to the automatic detection tool through the UART port, and the automatic detection tool detects and judges the feedback voltage value;
s304, the automatic detection tool simultaneously sends low levels for several seconds to two deduction parts (counting parts) of the wireless transmission control unit, strong magnetic interference is simulated, and strong magnetic interference detection is carried out; the strong magnetic interference detection means detecting whether the strong magnetic interference simulated by the low level will interfere the counting function of the deduction part and influence the counting.
S305, the automatic detection tool sends a channel instruction to the wireless transmission control unit through the UART port, so that the wireless transmission control unit is switched to the channel, and wireless communication test is carried out.
And S4, storing the detection result in the automatic detection tool according to a fixed format.
And S5, after the test is finished, the automatic detection tool is powered off, the wireless transmission control unit automatically clears the channel information of the wireless communication test, and the wireless transmission control unit enters a default channel after being powered on next time.
And S6, after the barcode of the data uploading command is scanned, transmitting the detection data stored in the automatic detection tool to a server through network communication.
The specific implementation process is as follows:
the automatic detection tool can automatically complete related functions in the function detection process of the wireless transmission control unit, and meanwhile, according to the communication channel arranged between the automatic detection tool and the wireless transmission control unit, a plurality of automatic detection tools work on different channels and do not influence each other. Because the communication channel information that wireless transmission control unit set up is not taken notes, only carry out the record to the testing result, can not influence production assembly, provide convenience for subsequent data is looked up simultaneously, guarantee automated inspection's validity.
A wireless transmission control unit is tested by a traditional manual detection tool, each function test needs manual triggering, about 2 to 3 minutes is needed, and only one manual detection tool can be operated by one person. After the automatic detection tool is adopted in the scheme, the work of detection personnel only needs to install the wireless transmission control unit on the needle bed, each function test of each wireless transmission control unit can be realized by one automatic detection tool, and about 40 seconds are needed through the test. And one person can operate two automated inspection frocks simultaneously to detect, thereby greatly improving the detection efficiency.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A method for detecting a wireless transmission control unit (WTRU), the method comprising: the method comprises the following steps:
s1, placing the wireless transmission control unit into a needle bed of the automatic detection tool, and pressing down a needle bed pressing plate;
s2, the automatic detection tool supplies power to the wireless transmission control unit through the needle bed, the wireless transmission control unit automatically initializes, after the initialization is completed, the wireless transmission control unit sends a request for entering an automatic detection mode to the automatic detection tool through a UART port of the wireless transmission control unit, and if the request passes, the wireless transmission control unit enters the automatic detection mode;
s3, in the automatic detection mode, automatically detecting the wireless transmission control unit through the automatic detection tool according to the set detection steps;
s4, storing the detection result in an automatic detection tool according to a fixed format;
the step S3 sequentially comprises key detection, valve opening detection, pulse counting detection, voltage acquisition detection, strong magnetic interference detection and wireless communication detection;
the detecting step in step S3 specifically includes the following steps:
s301, the wireless transmission control unit automatically presses a button to detect the button, and meanwhile, the automatic detection tool detects the closing or opening of the 4-line valve;
s302, the automatic detection tool sends a plurality of pulses to the number deduction part of the wireless transmission control unit, the wireless transmission control unit feeds back the number of the received pulses to the automatic detection tool through a UART port, and the automatic detection tool carries out detection judgment according to the number of the sent and received pulses;
s303, the automatic detection tool collects voltages at two ends of the wireless transmission control unit, the wireless transmission control unit feeds back a voltage value to the automatic detection tool through the UART port, and the automatic detection tool detects and judges the feedback voltage value;
s304, the automatic detection tool simultaneously sends low levels for several seconds to the two buckling parts of the wireless transmission control unit, strong magnetic interference is simulated, and strong magnetic interference detection is carried out;
s305, the automatic detection tool sends a channel instruction to the wireless transmission control unit through the UART port, so that the wireless transmission control unit is switched to the channel, and wireless communication test is carried out.
2. The method of claim 1, wherein the method comprises: the step S1 further includes the steps of:
s101, scanning the unique production serial number pasted on the wireless transmission control unit, and determining the communication mode of the wireless transmission control unit.
3. The method of claim 2, wherein the method comprises: the communication mode comprises LoRa and NB-IoT.
4. The method of claim 1, wherein the method comprises: in step S2, if the request fails or no reply is received within a specified time, entering a normal operating mode;
the normal working mode comprises gas meter gas consumption counting detection, wireless data transmission detection and abnormity detection.
5. The method of claim 1, wherein the method comprises: the 4-wire valve comprises a simulated gas valve, an anode, a cathode, a first feedback line and a second feedback line, and the anode, the cathode, the first feedback line and the second feedback line are respectively and independently connected with the simulated gas valve and the automatic detection tool; when the automatic detection tool applies forward voltage to the anode of the simulated gas valve, the simulated gas valve is opened, and after the simulated gas valve is opened, the first feedback line and the second feedback line are conducted; when the automatic detection tool applies forward voltage to the negative electrode of the simulated gas valve, the simulated gas valve is closed, and after the simulated gas valve is closed, the first feedback line and the second feedback line are disconnected.
6. The method of claim 1, wherein the method comprises: the method further includes the following steps before proceeding to step S2:
and detecting a feeder line in the needle bed, and judging whether the needle bed pressing plate is pressed down or lifted.
7. The method of claim 1, wherein the method comprises: further comprising the steps of:
and S5, after the test is finished, the automatic detection tool is powered off, the wireless transmission control unit automatically clears the channel information of the wireless communication test, and the wireless transmission control unit enters a default channel after being powered on next time.
8. The method of claim 1, wherein the method comprises: further comprising the steps of:
and S6, after the barcode of the data uploading command is scanned, transmitting the detection data stored in the automatic detection tool to a server through network communication.
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