Non-magnetic induction type water meter and test method
阅读说明：本技术 一种无磁感应式水表及测试方法 (Non-magnetic induction type water meter and test method ) 是由 刘虎平 于 2020-07-07 设计创作，主要内容包括：本发明涉及水表技术领域,公开了一种无磁感应式水表及测试方法,包括壳体,所述壳体为中部向上下两侧凸起的壳体,所述壳体的两端分别设有进水口与出水口,所述壳体的上部开设有装置腔,所述装置腔的底部固定设有固定轴,所述固定轴的下端转动连接有扇型盘,所述扇型盘的下端固定连接有金属片,所述金属片指针的上方在装置腔的底部固定设有感应线圈。本发明通过将扇形盘划分出两对以上的扇形钢片,从而形成反映扇型金属片指针旋转位置的多位编码,由于编码细化,意味着可侦测到的扇型金属片指针的旋转位置更加细化,能够用多个编码对应字轮上的一个显示数位,通过对编码顺序的判断,能够准确判断液流倒流情况,以及判断进位情况。(The invention relates to the technical field of water meters and discloses a non-magnetic induction type water meter and a testing method thereof. The invention divides the fan-shaped disc into more than two pairs of fan-shaped steel sheets, thereby forming multi-bit codes reflecting the rotating positions of the fan-shaped metal sheet pointers, because the codes are refined, the detectable rotating positions of the fan-shaped metal sheet pointers are more refined, a plurality of codes can be used for corresponding to one display digit on the character wheel, and the flow backflow situation and the carry situation can be accurately judged by judging the coding sequence.)
1. A non-magnetic induction type water meter is characterized in that: comprises a shell (1), the shell (1) is a shell with a middle part protruding towards the upper and lower sides, the two ends of the shell (1) are respectively provided with a water inlet (10) and a water outlet, the upper part of the shell (1) is provided with a device cavity (11), the bottom of the device cavity (11) is fixedly provided with a fixed shaft (2), the lower end of the fixed shaft (2) is rotatably connected with a fan-shaped disc (4), the lower end of the fan-shaped disc (4) is fixedly connected with a metal sheet (42), an induction coil (3) is fixedly arranged at the bottom of the device cavity above the fan-shaped disc (4), the induction coil (3) penetrates through the device cavity (11) and is fixedly connected with an information conversion device (15) in the device cavity (11), the device cavity (11) is also internally provided with an MCU processor (16), a first data output port (12) and a second data output port (13), the top surface of the device cavity (11) is provided, be equipped with data display window (141) and revolution table (142) on the display panel, the output of information conversion equipment (15) is connected with the input of MCU treater (16), the output of MCU treater (16) is connected with the input of first data delivery outlet (12) and second data delivery outlet (13) respectively, the output of MCU treater (16) is connected with data display window (141) and revolution table (142) respectively, be equipped with the fan-shaped steel sheet more than two pairs on fan-shaped dish (4), be equipped with signal induction unit (5) on the display panel, be equipped with signal induction unit delivery outlet (51) on the signal induction unit, the signal induction unit is connected with the output of MCU treater (16).
2. A non-magnetic induction water meter as defined in claim 1, further comprising: the metal sheet (42) is arranged concentrically and vertically with the fan-shaped disc (4) in the vertical direction.
3. A non-magnetic induction water meter as claimed in claim 2, further comprising: the metal sheets 42) are two or more.
4. A non-magnetic induction water meter as defined in claim 1, further comprising: the interfaces of the first data output port (12) and the second data output port (13) are RS485 or M-BUS or wireless LORA or NB-IOT internet of things transmission interfaces.
5. A non-magnetic induction water meter as claimed in claim 4, further comprising: the first data output port (12) and the second data output port (13) are arranged on the surface of the shell (1) in a protruding mode.
6. A test method of a non-magnetic induction type water meter is characterized by comprising the following steps: the method comprises the following steps:
s1, firstly, connecting the testing computer and the water meter to be tested through a USB-to-TTL line;
s2: clicking to run test tool software THParamSet.exe;
s3: selecting a serial number in the software of S2 that matches the display in the computer-device management;
s4: selecting a baud rate of 9600 and a time interval of 0 second;
s5: inputting and inputting a correct 10-bit table address in a new address column, wherein the address, the high two-bit address and the XX on the dial are respectively changed into 13, and the rear 8-bit address on the dial is taken; setting a table address, setting battery voltage, setting carrier frequency and setting spread spectrum;
s6: checking the 'spectrum test', namely starting the continuous emission of the spectrum, and displaying 'communication success' in a blank frame, namely indicating a normal emission frequency signal; "communication failure": indicating that the transmission fails, it is necessary to check whether the serial parameters and the connection are normal, and whether the table address is correct.
Technical Field
The invention relates to the technical field of water meters, in particular to a non-magnetic induction type water meter and a test method.
Background
Disclosure of Invention
In view of the above, the present invention provides a non-magnetic induction water meter and a testing method thereof, wherein a sector disc is divided into two or more pairs of sector steel sheets to form a multi-bit code reflecting a rotation position of the sector disc, the multi-bit code is more detailed due to the refinement of the code, which means that the detectable rotation position of the sector steel sheets is more detailed, the multi-bit code can correspond to one display digit on a print wheel, and the flow backflow situation and the carry situation can be accurately judged by judging the coding sequence.
The invention solves the technical problems by the following technical means:
the invention relates to a non-magnetic induction type water meter and a test method, which comprises a shell, wherein the shell is a shell with the middle part protruding upwards and downwards, a water inlet and a water outlet are respectively arranged at two ends of the shell, an apparatus cavity is arranged at the upper part of the shell, a fixed shaft is fixedly arranged at the bottom of the apparatus cavity, a fan-shaped disc is rotatably connected at the lower end of the fixed shaft, a metal sheet is fixedly connected at the lower end of the fan-shaped disc, an induction coil is fixedly arranged at the bottom of the apparatus cavity above the fan-shaped disc, the induction coil penetrates through the apparatus cavity and is fixedly connected with an information conversion device in the apparatus cavity, an MCU processor, a first data output port and a second data output port are also arranged in the apparatus cavity, a display panel is arranged on the top surface of the apparatus cavity, a data display window and a revolution meter are arranged on the display panel, the output end of the MCU processor is respectively connected with the input ends of the first data output port and the second data output port, the output end of the MCU processor is respectively connected with the data display window and the revolution meter, and more than two pairs of fan-shaped steel sheets are arranged on the fan-shaped disc. The display panel is provided with a signal sensing unit, the signal sensing unit is provided with a signal sensing unit output port, and the signal sensing unit is connected with the output end of the MCU processor. The invention divides the fan-shaped disc into more than two pairs of fan-shaped steel sheets, so that more than two pairs of electric signals are generated by one rotation, such as N1S1 pairs and N2S2 pairs, and the specific dividing method is to use the fan-shaped steel sheets to be spliced into the whole fan-shaped disc. When the fan-shaped disc rotates for one circle, the induction coil detects that 00 codes representing N1 poles and 01 codes representing S1 poles, 10 codes representing N2 poles and 11 codes representing S2 poles can be formed, the rotating position of the fan-shaped steel sheet is reflected by two-bit codes, and the precision is improved by two times. If more fan-shaped steel sheet pairs are arranged, the number of formed codes is more, the rotating position of the fan-shaped steel sheets can be reflected more finely, and the reading precision is further improved. In addition, the sequence of the codes can reflect the rotation direction of the fan-shaped steel sheet, once the situation of liquid flow reversal occurs, the fan-shaped steel sheet is reversed, the situation that the codes do not occur in sequence can occur, the liquid flow reversal problem can be quickly found by detecting the situation through the data MCU processor, and the data is reported to be correspondingly processed. The coding conditions before and after the current coding are found out through the coding sequence, and then the data MCU processor can analyze whether the carry is carried out or the current counting is kept, so that the problem of carry interpretation is effectively solved. Meanwhile, by adding the signal induction unit, when the device runs, the signal induction unit is connected with the external signal equipment to acquire the signal intensity of the induction coil, so that the installation height of the induction coil is adjusted, and the phenomenon that the pulse signal on the induction coil receiving sector disc is lost due to the fact that the installation height of the induction coil cannot be adjusted according to actual conditions in the traditional method is avoided. The intensity of the pulse signal is detected by the signal detection unit, so that the reasonable height of the gap for installing the induction coil is judged.
Further, the basic principle of the non-magnetic water meter is an LC oscillation sensor, in the circuit, a sine wave output circuit can be realized on an LC circuit through the adjustment of a switch K, a capacitor C is charged through the K, after the capacitor C is fully charged, the K is communicated with an inductor L, the electric quantity of the capacitor is discharged through the L, and the gradually attenuated sine wave output can be presented due to the electric energy consumption of the inductor L. As shown in fig. 3;
by utilizing the principle of the LC oscillating circuit, the non-magnetic water meter realizes the water meter metering by detecting the attenuation process of the sine wave. As shown in fig. 4.
After the LC circuit is charged, the information conversion device can obtain a sine wave in the LC oscillation circuit by detecting the voltage across the fixed capacitor C. When the induction coil is positioned in the metal area on the sector disc, an inductive eddy current can be formed, so that the electric energy consumption is higher, and the sine wave attenuation speed is higher; when the induction coil is positioned in a non-metal area, eddy current does not exist basically, and the sine wave attenuation speed is relatively slow. The speed of sine wave attenuation is detected through the information conversion device, the area where the induction coil is located can be accurately identified, the dial position and the number of turns are further judged, and the purpose of water meter metering is achieved.
Furthermore, the metal sheet is arranged concentrically and vertically with the sector disc in the vertical direction. The number of the metal sheets is more than two. More codes reflecting the rotating positions of the fan-shaped steel sheets are formed by dividing more than two pairs of fan-shaped steel sheets on one fan-shaped disc, so that the detection result is more precise, and the electronic reading result is more accurate; the steering of the fan-shaped steel sheet can be accurately judged through the detection sequences of a plurality of codes, so that the flow direction of the liquid flow can be accurately judged, and the counting data is prevented from being influenced by the inversion of the liquid flow; by adding the codes, more accurate basis can be provided for carry judgment, and the problem of carry interpretation is effectively solved.
Further, attenuation waveforms corresponding to a plurality of pairs of signals on the sector disc are analyzed, so that the states of the Sensor1/Sensor2 circularly appear in A (0/1) - > B (0/0) - > C (1/0) - > D (1/1) - > A (0/1) - > B (0/0) - > C (1/0) … … in the rotating process of the rotor, the corresponding states are obtained by detecting the sine wave attenuation trends of the Sensor1/Sensor2, and the positions of the water meter are obtained and the rotating speed is calculated through different combination states (A: fast/slow B: fast/fast C: slow/fast D: slow/slow). The relationship of fig. 5 is that the attenuation is fast as indicated by a low level and slow as indicated by a high level. Then the high and low levels are identified and classified by the information conversion device, so that the rotation position of the sector disc is identified and reflected more finely, and the reading precision is further improved. In addition, the coded sequence can reflect the rotation direction of the fan-shaped disc, and the reverse rotation of the fan-shaped disc can be timely recognized once the flow reversal situation occurs.
Further, the first data output port and the second data output interface are RS485 or M-BUS or wireless LORA or NB-IOT internet of things transmission interfaces.
Furthermore, the first data output port and the second data output port are both arranged on the surface of the shell in a protruding mode.
Further, the invention relates to a method for testing a non-magnetic induction type water meter, which is characterized by comprising the following steps: the method comprises the following steps:
s1, firstly, connecting the testing computer and the water meter to be tested through a USB-to-TTL line;
s2: clicking to run test tool software THParamSet.exe;
s3: selecting a serial number in the software of S2 that matches the display in the computer-device management;
s4: selecting a baud rate of 9600 and a time interval of 0 second;
s5: inputting and inputting a correct 10-bit table address in a new address column, wherein the address, the high two-bit address and the XX on the dial are respectively changed into 13, and the rear 8-bit address on the dial is taken; setting a table address, setting battery voltage, setting carrier frequency and setting spread spectrum;
s6: checking the 'spectrum test', namely starting the continuous emission of the spectrum, and displaying 'communication success' in a blank frame, namely indicating a normal emission frequency signal; "communication failure": indicating that the transmission fails, it is necessary to check whether the serial parameters and the connection are normal, and whether the table address is correct.
Further, address setting: if the table address is not known, 10 bits may be entered in the broadcast address box: FFFFFFFFFF, selecting the broadcast address, clicking the button to read the table row degree, and reading the table address and the table; if displayed in blank boxes: if the reading fails, the connection and the serial port parameter selection are checked to be correct. If the existing address needs to be changed, a new 10-bit address can be input in the new address box, and the set address button is clicked until the blank box shows: if the address is successfully set, the address setting is completed.
2. Frequency setting: the frequency range of the frequency spectrum test is as follows: 470 MHz-510 MHz; in the band, 7 frequency points are available: lowest frequency: 470.49MHz, highest frequency: 509.50 MHz; bandwidth: 125 KHz; in the set frequency box: select the desired frequency and then click on the left: the "set frequency" button, i.e., the frequency of the watch unit, can be set. And displaying in blank frames: if the frequency is successfully set, the frequency is successfully set; if the display fails, the serial port setting and connection and the table address are checked to see if they are correct.
The invention has the beneficial effects that: the sector disc is divided into more than two pairs of signal pairs, so that the multi-bit codes reflecting the rotating positions of the sector steel sheets are formed, the detected rotating positions of the sector steel sheets are more refined due to the thinning of the codes, a plurality of codes can be used for corresponding to one display digit on the character wheel, and the liquid flow backflow situation and the carry situation can be accurately judged by judging the coding sequence.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a non-magnetic induction water meter and a testing method according to the present invention;
FIG. 2 is a schematic view of a structure on a sector disc of the present invention;
FIG. 3 is a schematic illustration of sine wave attenuation of the present invention;
FIG. 4 is a schematic view of the sine wave attenuation process generated by the rotation of the fan-shaped steel sheets on the fan-shaped disc of the present invention;
FIG. 5 is a schematic of the low and high outputs of the present invention;
wherein: the device comprises a
Detailed Description
The invention will be described in detail below with reference to the following figures and specific examples:
as shown in fig. 1-5, the non-magnetic induction water meter and the testing method thereof of the present invention comprises a
In the embodiment, the basic principle of the non-magnetic water meter is an LC oscillation sensor, in the circuit, a sine wave output circuit can be realized on the LC circuit through the adjustment of a switch K, a capacitor C is charged through the K, after the capacitor C is fully charged, the K is communicated with an inductor L, the electric quantity of the capacitor is discharged through the L, and the gradually attenuated sine wave output is presented due to the electric energy consumption of the inductor L. As shown in fig. 3;
by utilizing the principle of the LC oscillating circuit, the non-magnetic water meter realizes the water meter metering by detecting the attenuation process of the sine wave. As shown in fig. 4.
After the LC circuit is charged, the information conversion device can obtain a sine wave in the LC oscillation circuit by detecting the voltage across the fixed capacitor C. When the induction coil is positioned in the metal area on the sector disc, an inductive eddy current can be formed, so that the electric energy consumption is higher, and the sine wave attenuation speed is higher; when the induction coil is positioned in a non-metal area, eddy current does not exist basically, and the sine wave attenuation speed is relatively slow. The speed of sine wave attenuation is detected through the information conversion device, the area where the induction coil is located can be accurately identified, the dial position and the number of turns are further judged, and the purpose of water meter metering is achieved.
In this embodiment, the
In this embodiment, attenuation waveforms corresponding to a plurality of pairs of signals on the
In this embodiment, the first
In this embodiment, the first
In this embodiment, the test method of the non-magnetic induction type water meter of the present invention is characterized in that: the method comprises the following steps:
s1, firstly, connecting the testing computer and the water meter to be tested through a USB-to-TTL line;
s2: clicking to run test tool software THParamSet.exe;
s3: selecting a serial number in the software of S2 that matches the display in the computer-device management;
s4: selecting a baud rate of 9600 and a time interval of 0 second;
s5: inputting and inputting a correct 10-bit table address in a new address column, wherein the address, the high two-bit address and the XX on the dial are respectively changed into 13, and the rear 8-bit address on the dial is taken; setting a table address, setting battery voltage, setting carrier frequency and setting spread spectrum;
s6: checking the 'spectrum test', namely starting the continuous emission of the spectrum, and displaying 'communication success' in a blank frame, namely indicating a normal emission frequency signal; "communication failure": indicating that the transmission fails, it is necessary to check whether the serial parameters and the connection are normal, and whether the table address is correct.
In this embodiment, the address setting: if the table address is not known, 10 bits may be entered in the broadcast address box: FFFFFFFFFF, selecting the broadcast address, clicking the button to read the table row degree, and reading the table address and the table; if displayed in blank boxes: if the reading fails, the connection and the serial port parameter selection are checked to be correct. If the existing address needs to be changed, a new 10-bit address can be input in the new address box, and the set address button is clicked until the blank box shows: if the address is successfully set, the address setting is completed.
2. Frequency setting: the frequency range of the frequency spectrum test is as follows: 470 MHz-510 MHz; in the band, 7 frequency points are available: lowest frequency: 470.49MHz, highest frequency: 509.50 MHz; bandwidth: 125 KHz; in the set frequency box: select the desired frequency and then click on the left: the "set frequency" button, i.e., the frequency of the watch unit, can be set. And displaying in blank frames: if the frequency is successfully set, the frequency is successfully set; if the display fails, the serial port setting and connection and the table address are checked to see if they are correct.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
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