Flow detection system, full membrane pharmaceutical water equipment and detection method

Abstract

The present invention belongs to the field of detection technology, specifically to flow detection, and in particular to a flow detection system, full-membrane pharmaceutical water equipment and detection method, wherein the flow detection system includes: a control module is configured to control the first ultrasonic transducer or the second ultrasonic transducer to emit ultrasonic waves, and detect the flow in the ultrasonic wave received by the receiver; wherein the control module is also configured to select the corresponding working mode according to the frequency of the first ultrasonic transducer and the second ultrasonic transducer to regulate the working mode of the first ultrasonic transducer and the second ultrasonic transducer, thereby realizing the adjustment of the working mode of the two ultrasonic transducers, reducing the working time of a single ultrasonic transducer, providing heat dissipation time, and avoiding inaccurate flow detection due to the ultrasonic transducer heating up due to long-term operation.

Description

Technical Field

[0001] The present invention belongs to the field of detection technology, specifically relates to flow detection, and in particular to a flow detection system, full-membrane pharmaceutical water equipment and a detection method. Background Art

[0002] During the preparation of water for injection, it is necessary to fill it. During filling, the flow rate of water for injection needs to be accurately and continuously detected to avoid the water for injection remaining in the filling equipment for a long time or the filling volume being affected due to inaccurate flow rate. Therefore, it is necessary to detect the flow rate in the pipeline in real time. Ultrasonic sensors are usually used for detection. Ultrasonic sensors rely on transducers to work. The transducers will heat up after working for a long time. High temperature may cause aging of piezoelectric materials, falling off of solder joints or degradation of circuit component performance, which will lead to inaccurate flow detection.

[0003] Therefore, due to the technical problem that the ultrasonic sensor cannot accurately detect the flow rate due to long-term operation, it is necessary to design a flow detection system, a full-membrane pharmaceutical water equipment and a detection method.

[0004] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the Invention

[0005] The embodiments of the present disclosure at least provide a flow detection system, a full-membrane pharmaceutical water equipment, and a detection method.

[0006] In a first aspect, an embodiment of the present disclosure provides a flow detection system, comprising:

[0007] a control module, and a first ultrasonic transducer, a second ultrasonic transducer, and a receiver electrically connected to the control module;

[0008] The first ultrasonic transducer is arranged in the side wall of the pipeline and contacts the liquid in the pipeline;

[0009] The second ultrasonic transducer is arranged on the side wall of the pipe and connected to the first ultrasonic transducer;

[0010] The receiver is disposed in the side wall of the pipeline and is in contact with the liquid in the pipeline;

[0011] The control module is configured to control the first ultrasonic transducer or the second ultrasonic transducer to emit ultrasonic waves, and detect the flow in the pipeline through the ultrasonic waves received by the receiver; wherein:

[0012] The control module is further configured to select a corresponding working mode according to the frequencies of the first ultrasonic transducer and the second ultrasonic transducer to regulate the working modes of the first ultrasonic transducer and the second ultrasonic transducer to reduce the working time of a single ultrasonic transducer.

[0013] In an optional embodiment, the control module is configured to control the first ultrasonic transducer and the second ultrasonic transducer to operate alternately before liquid flows through the pipeline, obtain frequencies corresponding to the ultrasonic waves emitted by the first ultrasonic transducer and the second ultrasonic transducer according to the receiver, and when both frequencies are within a preset standard deviation range, the first ultrasonic transducer and the second ultrasonic transducer operate in a first mode to detect the flow rate in the pipeline when liquid flows through the pipeline;

[0014] In the first working mode, the first ultrasonic transducer and the second ultrasonic transducer work alternately, and the working time of the first ultrasonic transducer is greater than the working time of the second ultrasonic transducer.

[0015] In an optional embodiment, the control module is further configured to, in the first working mode, when the first ultrasonic transducer is normal, obtain the total number of frequency data of the second ultrasonic transducer within a preset time, that is, obtain the number of times the second ultrasonic transducer works within the preset time, and the frequency of each time the second ultrasonic transducer works; if the proportion of the number of times the second ultrasonic transducer has an abnormal frequency to the total number within the preset time is greater than or equal to a first preset proportion, then the first ultrasonic transducer and the second ultrasonic transducer enter a third working mode corresponding to the second ultrasonic transducer, that is, the working time of the second ultrasonic transducer is much less than the working time of the first ultrasonic transducer;

[0016] If the proportion of the number of abnormal frequencies of the first ultrasonic transducer to the total number of abnormal frequencies within the preset time is less than a second preset proportion, then the first ultrasonic transducer is normal.

[0017] In an optional embodiment, the control module is further configured to, in the first working mode, when the second ultrasonic transducer is normal, obtain the total number of frequency data of the first ultrasonic transducer within a preset time, that is, obtain the number of times the first ultrasonic transducer works within the preset time, and the frequency of each time the first ultrasonic transducer works; if the proportion of the number of times the first ultrasonic transducer has an abnormal frequency to the total number of times within the preset time is greater than or equal to a second preset proportion and less than a third preset proportion, then the first ultrasonic transducer and the second ultrasonic transducer enter the second working mode, that is, the working time of the second ultrasonic transducer is equal to the working time of the first ultrasonic transducer;

[0018] If the proportion of the number of times the second ultrasonic transducer has an abnormal frequency to the total number of times within the preset time is less than the first preset proportion, then the second ultrasonic transducer is normal.

[0019] In an optional embodiment, the control module is further configured to, in the second working mode, when the second ultrasonic transducer is normal, if the proportion of the number of abnormal frequencies of the first ultrasonic transducer to the total number of times within the preset time is greater than or equal to a third preset proportion, then the first ultrasonic transducer and the second ultrasonic transducer enter the third working mode corresponding to the first ultrasonic transducer, that is, the working time of the second ultrasonic transducer is much greater than the working time of the first ultrasonic transducer.

[0020] In an optional embodiment, the control module is further configured to calibrate the first ultrasonic transducer and / or the second ultrasonic transducer that has deviated when any frequency of the first ultrasonic transducer and the second ultrasonic transducer is outside a preset standard deviation range, that is, when the first ultrasonic transducer is working, the frequency is obtained through the second ultrasonic transducer, and when the second ultrasonic transducer is working, the frequency is obtained through the first ultrasonic transducer. If the frequencies of both are not lost and the frequencies of the first ultrasonic transducer and / or the second ultrasonic transducer are lower than the preset standard frequency, the frequencies of the first ultrasonic transducer and the second ultrasonic transducer are lowered to below the smaller value of the two frequencies, and then the first ultrasonic transducer and the second ultrasonic transducer operate in the fourth working mode;

[0021] In the fourth mode, the first ultrasonic transducer and the second ultrasonic transducer work alternately, and the working time of the first ultrasonic transducer is shorter than the working time of the second ultrasonic transducer.

[0022] In an optional embodiment, the control module is further configured to, if the frequency of the first ultrasonic transducer is lost, continuously sample the frequency of the first ultrasonic transducer multiple times; if the number of signal losses is greater than a preset number and the loss occurs at the same location, the first ultrasonic transducer and the second ultrasonic transducer operate in a fourth operating mode, and the second ultrasonic transducer operates at the location where the frequency of the first ultrasonic transducer is lost;

[0023] If the number of signal losses is greater than a preset number and the locations of the losses are different, the first ultrasonic transducer and the second ultrasonic transducer operate in the third operating mode corresponding to the first ultrasonic transducer, that is, the operating time of the second ultrasonic transducer is much longer than the operating time of the first ultrasonic transducer;

[0024] If the number of times the signal is lost is less than the preset number, the first ultrasonic transducer and the second ultrasonic transducer operate in the fourth operating mode.

[0025] In an optional embodiment, the control module is further configured to, in the fourth operating mode, when the first ultrasonic transducer is normal, obtain the total number of frequency data of the second ultrasonic transducer within a preset time; if the proportion of the number of abnormal frequencies of the second ultrasonic transducer to the total number of times within the preset time is greater than or equal to a first preset proportion, then the first ultrasonic transducer and the second ultrasonic transducer enter the third operating mode corresponding to the second ultrasonic transducer, that is, the operating time of the second ultrasonic transducer is much shorter than the operating time of the first ultrasonic transducer;

[0026] When the second ultrasonic transducer is normal, if the proportion of the abnormal frequency number of the first ultrasonic transducer to the total number within the preset time is greater than or equal to a third preset proportion, the first ultrasonic transducer and the second ultrasonic transducer enter the third working mode corresponding to the first ultrasonic transducer, that is, the working time of the second ultrasonic transducer is much greater than the working time of the first ultrasonic transducer.

[0027] In a second aspect, the present disclosure also provides a full-membrane pharmaceutical water device using the above-mentioned flow detection system, comprising:

[0028] Water pretreatment system, suitable for treating raw water into drinking water;

[0029] A water treatment system, connected to the water pretreatment system, suitable for treating direct drinking water into water for injection;

[0030] The flow detection system is connected to the outlet pipe of the water treatment system and is suitable for detecting the flow in the pipe.

[0031] In a third aspect, the present disclosure also provides a detection method using the above-mentioned flow detection system, including:

[0032] Ultrasonic waves are emitted by the first ultrasonic transducer or the second ultrasonic transducer, and the flow rate in the pipeline is detected by the ultrasonic waves received by the receiver; wherein:

[0033] The corresponding working modes are selected according to the frequencies of the first ultrasonic transducer and the second ultrasonic transducer to regulate the working modes of the first ultrasonic transducer and the second ultrasonic transducer, so as to reduce the working time of a single ultrasonic transducer.

[0034] The beneficial effect of the present invention is that the flow detection system includes: a control module, and a first ultrasonic transducer, a second ultrasonic transducer and a receiver electrically connected to the control module; the first ultrasonic transducer is arranged in the side wall of the pipe and contacts the liquid in the pipe; the second ultrasonic transducer is arranged in the side wall of the pipe and connected to the first ultrasonic transducer; the receiver is arranged in the side wall of the pipe and contacts the liquid in the pipe; the control module is configured to control the first ultrasonic transducer or the second ultrasonic transducer to emit ultrasonic waves, and detect the flow in the pipe through the ultrasonic waves received by the receiver; wherein: the control module is also configured to select the corresponding working mode according to the frequency of the first ultrasonic transducer and the second ultrasonic transducer to regulate the working mode of the first ultrasonic transducer and the second ultrasonic transducer, thereby realizing the adjustment of the working modes of the two ultrasonic transducers, reducing the working time of a single ultrasonic transducer, providing heat dissipation time, and avoiding the inaccurate flow detection caused by the ultrasonic transducer heating up due to long-term operation.

[0035] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 A structural diagram of a flow detection system provided in an embodiment of the present disclosure;

[0039] Figure 2 A schematic structural diagram of a flow detection system provided in an embodiment of the present disclosure;

[0040] Figure 3 A flow detection system according to an embodiment of the present disclosure is provided.

[0041] Figure 4 A waveform diagram provided for an embodiment of the present disclosure;

[0042] Figure 5A schematic diagram of mechanical coupling interference provided by an embodiment of the present disclosure;

[0043] Figure 6 A schematic diagram of the piping of a full-membrane pharmaceutical water equipment provided in an embodiment of the present disclosure.

[0044] In the picture:

[0045] 1 pipeline, 11 first ultrasonic transducer, 12 second ultrasonic transducer, 13 receiver;

[0046] 2. Water pretreatment system;

[0047] 3. Water treatment system. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0050] During the preparation of water for injection, it is necessary to fill it. During filling, the flow rate of the water for injection needs to be accurately and continuously detected to avoid the water for injection remaining in the filling equipment for a long time or the filling volume being affected due to inaccurate flow rate. Therefore, it is necessary to detect the flow rate in the pipeline in real time. Ultrasonic sensors are usually used for detection. Ultrasonic sensors rely on transducers to work, but the inventors have found that the transducers will heat up after working for a long time. High temperature may cause aging of piezoelectric materials, falling off of solder joints or degradation of circuit component performance, which in turn leads to inaccurate flow detection.

[0051] The defects in the above solutions are the results obtained by the inventors after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure in this article should be the contributions made by the inventors to the present disclosure during the disclosure process.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0053] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0054] like Figure 1 、 Figure 2 and Figure 3 As shown, at least one disclosed embodiment provides a flow detection system, including: a control module, and a first ultrasonic transducer 11, a second ultrasonic transducer 12, and a receiver 13 electrically connected to the control module; the first ultrasonic transducer 11 is arranged in the side wall of the pipe 1 and contacts the liquid in the pipe 1; the second ultrasonic transducer 12 is arranged in the side wall of the pipe 1 and connected to the first ultrasonic transducer 11; the receiver 13 is arranged in the side wall of the pipe 1 and contacts the liquid in the pipe 1; the control module is configured to control the first ultrasonic transducer 11 or the second ultrasonic transducer 12 to emit ultrasonic waves, and detect the flow in the pipe 1 through the ultrasonic waves received by the receiver 13; wherein: the control module is further configured to select a corresponding operating mode according to the frequency of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to regulate the operating mode of the first ultrasonic transducer 11 and the second ultrasonic transducer 12, thereby achieving adjustment of the operating modes of the two ultrasonic transducers, reducing the operating time of a single ultrasonic transducer, providing heat dissipation time, and avoiding inaccurate flow detection caused by the ultrasonic transducer heating due to long-term operation.

[0055] In this embodiment, the control module is connected to the first ultrasonic transducer 11, the second ultrasonic transducer 12 and the receiver 13 through a communication cable. The control module sends a control signal to the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to control the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to emit ultrasonic waves, and receives the ultrasonic signal through the receiver 13 to calculate the flow rate and flow in the pipeline 1. At the same time, the frequency of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 can be obtained according to the signal.

[0056] In this embodiment, when the diameter of the pipe 1 is greater than the preset diameter, for example, when the pipe 1 is 8 inches or larger, the straight line between the first ultrasonic transducer 11 and the receiver 13 is parallel to the radial direction of the pipe 1; when the diameter of the pipe 1 is less than the preset diameter, for example, when the pipe 1 is less than 8 inches, the straight line between the first ultrasonic transducer 11 and the receiver 13 is not parallel to the radial direction of the pipe 1, which facilitates the installation of the receiver 13 and the first ultrasonic transducer 11.

[0057] In this embodiment, one side of the first ultrasonic transducer 11 is in contact with the liquid in the pipe 1, and this side is close to the inner wall of the pipe 1, so as to avoid affecting the flow of the liquid in the pipe 1; similarly, one side of the receiver 13 is in contact with the liquid in the pipe 1, and this side is close to the inner wall of the pipe 1, so as to avoid affecting the flow of the liquid in the pipe 1.

[0058] In this embodiment, in each working mode, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 work alternately, so that when one ultrasonic transducer is working, the other ultrasonic transducer is not working. The non-working ultrasonic transducer can be cooled down to avoid the temperature increase caused by a single ultrasonic transducer working for a long time, which affects the accuracy of flow detection.

[0059] In an optional embodiment, the control module is configured to control the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to operate alternately before liquid flows through the pipeline 1, obtain the frequencies corresponding to the ultrasonic waves emitted by the first ultrasonic transducer 11 and the second ultrasonic transducer 12 according to the receiver 13, and when both frequencies are within a preset standard deviation range, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 operate in a first mode to detect the flow rate in the pipeline 1 when liquid flows through the pipeline 1;

[0060] In this embodiment, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 can both have an optimal frequency at the factory, and the optimal frequencies of the two can be the same. Before each preparation of water for injection, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 can be started to determine whether the two are normal. If abnormal, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 are calibrated.

[0061] In the first working mode, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 work alternately, and the working time of the first ultrasonic transducer 11 is greater than the working time of the second ultrasonic transducer 12 .

[0062] In this embodiment, in the first working mode, the working time of the first ultrasonic transducer 11 accounts for 70% of the total time, and the working time of the second ultrasonic transducer 12 accounts for 30% of the total time.

[0063] In an optional embodiment, the control module is further configured to, in the first working mode, when the first ultrasonic transducer 11 is normal, obtain the total number of frequency data of the second ultrasonic transducer 12 within a preset time, that is, obtain the number of working times of the second ultrasonic transducer 12 within the preset time, and the frequency of each time the second ultrasonic transducer 12 works; if the proportion of the number of abnormal frequencies of the second ultrasonic transducer 12 in the total number of times within the preset time is greater than or equal to a first preset proportion, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 enter the third working mode corresponding to the second ultrasonic transducer 12, that is, the working time of the second ultrasonic transducer 12 is much less than the working time of the first ultrasonic transducer 11; if the proportion of the number of abnormal frequencies of the first ultrasonic transducer 11 in the total number of times within the preset time is less than the second preset proportion, the first ultrasonic transducer 11 is normal.

[0064] In this embodiment, the second ultrasonic transducer 12 works in a start-stop mode at fixed time intervals, and emits ultrasonic waves at a certain frequency each time it is started. In the first working mode, after the second ultrasonic transducer 12 starts working, the number of times the second ultrasonic transducer 12 is started and the frequency of each start of the second ultrasonic transducer 12 can be obtained within a preset time period; when the frequency of the second ultrasonic transducer 12 is different from the corresponding preset value, this frequency is determined to be an abnormal frequency, and the number of abnormal frequencies is recorded. The abnormal frequency can be as follows: Figure 4 The abnormal frequency can also be as shown in Figure 1. Figure 4 The waveform shown in b disappears.

[0065] In this embodiment, since the second ultrasonic transducer 12 is arranged on the outer wall of the pipe 1, it does not contact the liquid and is less affected by factors during the flow detection process. Therefore, by setting the first preset ratio, it is directly determined whether the performance of the second ultrasonic transducer 12 is affected.

[0066] In this embodiment, if the proportion of the number of abnormal frequencies of the second ultrasonic transducer 12 to the total number of abnormal frequencies within the preset time is greater than or equal to a first preset proportion, it is determined that the performance of the second ultrasonic transducer 12 has been significantly affected.

[0067] In an optional embodiment, the control module is further configured to, in the first working mode, when the second ultrasonic transducer 12 is normal, obtain the total number of frequency data of the first ultrasonic transducer 11 within a preset time, that is, obtain the number of working times of the first ultrasonic transducer 11 within the preset time, and the frequency of each time the first ultrasonic transducer 11 works; if the proportion of the number of abnormal frequencies of the first ultrasonic transducer 11 in the total number of times within the preset time is greater than or equal to the second preset proportion and less than the third preset proportion, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 enter the second working mode, that is, the working time of the second ultrasonic transducer 12 is equal to the working time of the first ultrasonic transducer 11; if the proportion of the number of abnormal frequencies of the second ultrasonic transducer 12 in the total number of times within the preset time is less than the first preset proportion, the second ultrasonic transducer 12 is normal.

[0068] In this embodiment, the working mode of the first ultrasonic transducer 11 is to start and stop at fixed time intervals, and each time it is started, it will emit ultrasonic waves at a certain frequency. In the first working mode, when the first ultrasonic transducer 11 starts working, the number of times the first ultrasonic transducer 11 is started and the frequency after each start of the first ultrasonic transducer 11 can be obtained within a preset time period; when the frequency of the first ultrasonic transducer 11 is different from the corresponding preset value, this frequency is judged to be an abnormal frequency, and the number of abnormal frequencies is recorded.

[0069] In this embodiment, because the first ultrasonic transducer 11 is disposed within the sidewall of the pipe 1 and in contact with the liquid within the pipe 1, it is susceptible to water hammer and other effects generated by the liquid flow. Therefore, the first ultrasonic transducer 11 is more susceptible to aging and other factors, leading to performance degradation. Therefore, the third and second preset ratios are set to subdivide the performance of the second ultrasonic transducer 12. Performance degradation can easily cause the ultrasonic transducer to heat up, which can lead to inaccurate flow detection.

[0070] In this embodiment, in the second working mode, the working time of the first ultrasonic transducer 11 accounts for 50% of the total time, and the working time of the second ultrasonic transducer 12 accounts for 50% of the total time. At this time, compared with the first working mode, the first ultrasonic transducer 11 has more time to shut down and dissipate heat.

[0071] In an optional embodiment, the control module is further configured to, in the second working mode, when the second ultrasonic transducer 12 is normal, if the proportion of the abnormal frequency number of the first ultrasonic transducer 11 to the total number within the preset time is greater than or equal to a third preset proportion, then the first ultrasonic transducer 11 and the second ultrasonic transducer 12 enter the third working mode corresponding to the first ultrasonic transducer 11, that is, the working time of the second ultrasonic transducer 12 is much greater than the working time of the first ultrasonic transducer 11.

[0072] In this embodiment, in the third working mode corresponding to the first ultrasonic transducer 11, the working time of the first ultrasonic transducer 11 accounts for 10% of the total time, and the working time of the second ultrasonic transducer 12 accounts for 90% of the total time; in the third working mode corresponding to the second ultrasonic transducer 12, the working time of the second ultrasonic transducer 12 accounts for 10% of the total time, and the working time of the first ultrasonic transducer 11 accounts for 90% of the total time.

[0073] In this embodiment, when both the first ultrasonic transducer 11 and the second ultrasonic transducer 12 are abnormal, an alarm is issued and both ultrasonic transducers need to be replaced.

[0074] In an optional embodiment, the control module is further configured to calibrate the deviated first ultrasonic transducer 11 and / or the second ultrasonic transducer 12 when any frequency of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 is outside a preset standard deviation range, that is, when the first ultrasonic transducer 11 is working, the frequency is obtained through the second ultrasonic transducer 12, and when the second ultrasonic transducer 12 is working, the frequency is obtained through the first ultrasonic transducer 11. If the frequencies of the two are not lost and the frequencies of the first ultrasonic transducer 11 and / or the second ultrasonic transducer 12 are lower than the preset standard frequency, the frequencies of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 are lowered to below the smaller value of the two frequencies, and then the first ultrasonic transducer 11 and the second ultrasonic transducer 12 operate in a fourth operating mode; in the fourth mode, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 work alternately, and the working time of the first ultrasonic transducer 11 is less than the working time of the second ultrasonic transducer 12.

[0075] In this embodiment, since the performance of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 may be lower than the performance when leaving the factory due to aging, for example, the frequency that the two can reach may be lower than the optimal frequency when leaving the factory, the performance of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 needs to be judged and calibrated before each water injection preparation.

[0076] In this embodiment, when both the first ultrasonic transducer 11 and the second ultrasonic transducer 12 need to be calibrated, the first ultrasonic transducer 11 is calibrated first, and then the second ultrasonic transducer 12 is calibrated.

[0077] In this embodiment, since the first ultrasonic transducer 11 and the second ultrasonic transducer 12 are connected together, when one of them emits an ultrasonic wave, the other can receive it.

[0078] In this embodiment, since the connection between the first ultrasonic transducer 11 and the second ultrasonic transducer 12 is fixed and the medium therebetween moves, it is possible to determine whether the received frequency is lost or abnormal.

[0079] In this embodiment, when the frequency of one of the ultrasonic transducers drops, the frequencies of both ultrasonic transducers need to be lowered.

[0080] In an optional embodiment, the control module is further configured to sample the frequency of the first ultrasonic transducer 11 multiple times continuously if the frequency of the first ultrasonic transducer 11 is lost; if the number of signal losses is greater than a preset number and the positions of the losses are the same, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 operate in a fourth working mode, and the second ultrasonic transducer 12 operates at the frequency position where the first ultrasonic transducer 11 is lost; if the number of signal losses is greater than a preset number and the positions of the losses are different, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 operate in the third working mode corresponding to the first ultrasonic transducer 11, that is, the working time of the second ultrasonic transducer 12 is much greater than the working time of the first ultrasonic transducer 11; if the number of signal losses is less than the preset number, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 operate in the fourth working mode.

[0081] In this embodiment, similarly, when the second ultrasonic transducer 12 is lost, the first ultrasonic transducer 11 works at the corresponding position.

[0082] In this embodiment, when signal loss occurs, acquisition is performed continuously for multiple times. If the location of signal loss is the same, the first ultrasonic transducer 11 is judged to be abnormally consistent. Therefore, in the subsequent flow detection process, the second ultrasonic transducer 12 is used to detect at the location where the first ultrasonic transducer 11 is lost, and an alarm can also be issued to remind the staff to inspect or replace the first ultrasonic transducer 11 when production is idle.

[0083] In this embodiment, if the number of times the signal is lost is less than the preset number, it is determined that the abnormality of the first ultrasonic transducer 11 is sporadic.

[0084] In this embodiment, the fourth operating mode, the working time of the first super wave transducer accounts for 30% of the total time, the working time of the second super wave transducer accounts for 70% of the total time.

[0085] In an optional embodiment, the control module is further configured to, in the fourth working mode, when the first ultrasonic transducer 11 is normal, obtain the total number of frequency data of the second ultrasonic transducer 12 within a preset time; if the proportion of the number of abnormal frequencies of the second ultrasonic transducer 12 in the total number of times within the preset time is greater than or equal to a first preset proportion, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 enter the third working mode corresponding to the second ultrasonic transducer 12, that is, the working time of the second ultrasonic transducer 12 is much shorter than the working time of the first ultrasonic transducer 11; when the second ultrasonic transducer 12 is normal, if the proportion of the number of abnormal frequencies of the first ultrasonic transducer 11 in the total number of times within the preset time is greater than or equal to a third preset proportion, the first ultrasonic transducer 11 and the second ultrasonic transducer 12 enter the third working mode corresponding to the first ultrasonic transducer 11, that is, the working time of the second ultrasonic transducer 12 is much longer than the working time of the first ultrasonic transducer 11.

[0086] like Figure 5 As shown, in this embodiment, the frequency drift caused by mechanical coupling is closely related to the frequency of the ultrasonic transducer (such as piezoelectric ceramics) and its mechanical boundary conditions. After the first ultrasonic transducer 11 and the second ultrasonic transducer 12 are shut down, the vibrations that continue to be generated due to inertia will generate axial stress or shear force on the other ultrasonic transducer through the fixed bracket, etc., resulting in the vibration frequency of the other ultrasonic transducer being affected. Therefore, in terms of selection, the operating frequencies of the two ultrasonic transducers need to be greater than the required frequency requirements, so that they can be used at a reduced frequency to avoid interference caused by mechanical coupling and extend the life of the entire sensor; the ultrasonic transducer meets the required frequency after the frequency reduction. At this time, the excess energy of the ultrasonic transducer due to the frequency reduction can reduce the impact of the vibrations that continue to be generated by the other ultrasonic transducer due to inertia.

[0087] In this embodiment, the amplitude of the ultrasonic transducer can be increased by frequency reduction to reduce the influence of the vibration of the other ultrasonic transducer that continues to be generated due to inertia.

[0088] like Figure 6 As shown, at least one other disclosed embodiment also provides a full-membrane pharmaceutical water equipment using the above-mentioned flow detection system, including: a water quality pretreatment system 2, suitable for treating raw water into direct drinking water; a water quality treatment system 3, which is connected to the water quality pretreatment system 2 and is suitable for treating direct drinking water into water for injection; a flow detection system, which is connected to the outlet pipe of the water quality treatment system 3 and is suitable for detecting the flow in the pipeline 1.

[0089] In this embodiment, the water quality treatment system 3 can be connected to the subsequent filling equipment through the pipeline 1. The flow detection system can accurately detect the flow in the pipeline 1 in real time. When the flow is abnormal, the staff can be notified to adjust or repair it.

[0090] At least one other disclosed embodiment also provides a detection method using the above-mentioned flow detection system, including: emitting ultrasonic waves through the first ultrasonic transducer 11 or the second ultrasonic transducer 12, and detecting the flow in the ultrasonic detection pipeline 1 through the ultrasonic waves received by the receiver 13; wherein: selecting a corresponding working mode according to the frequency of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to regulate the working mode of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to reduce the working time of a single ultrasonic transducer.

[0091] In summary, the flow detection system includes: a control module, and a first ultrasonic transducer 11, a second ultrasonic transducer 12 and a receiver 13 electrically connected to the control module; the first ultrasonic transducer 11 is arranged in the side wall of the pipe 1 and in contact with the liquid in the pipe 1; the second ultrasonic transducer 12 is arranged in the side wall of the pipe 1 and connected to the first ultrasonic transducer 11; the receiver 13 is arranged in the side wall of the pipe 1 and in contact with the liquid in the pipe 1; the control module is configured to control the first ultrasonic transducer 11 or the second ultrasonic transducer 12 to emit ultrasonic waves, and detect the flow in the pipe 1 through the ultrasonic waves received by the receiver 13; wherein: the control module is further configured to select a corresponding working mode according to the frequency of the first ultrasonic transducer 11 and the second ultrasonic transducer 12 to regulate the working mode of the first ultrasonic transducer 11 and the second ultrasonic transducer 12, thereby realizing the adjustment of the working mode of the two ultrasonic transducers, reducing the working time of a single ultrasonic transducer, providing heat dissipation time, and avoiding inaccurate flow detection caused by the ultrasonic transducer heating due to long-term operation.

[0092] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0093] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used herein unless expressly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0094] Spatially relative terms, such as "inside," "outside," "below," "beneath," "down," "above," "on," etc., may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientations depicted in the figures, spatially relative terms may be intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as being "below" or "below" other elements or features will be oriented to be "above" the other elements or features. Thus, the example term "below" may encompass both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0095] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A flow detection system, characterized in that: include: A control module, and a first ultrasonic transducer (11), a second ultrasonic transducer (12), and a receiver (13) electrically connected to the control module; The first ultrasonic transducer (11) is arranged in the side wall of the pipe (1) and is in contact with the liquid in the pipe (1); The second ultrasonic transducer (12) is arranged on the side wall of the pipeline (1) and is connected to the first ultrasonic transducer (11); The receiver (13) is arranged in the side wall of the pipeline (1) and is in contact with the liquid in the pipeline (1); The control module is configured to control the first ultrasonic transducer (11) or the second ultrasonic transducer (12) to emit ultrasonic waves, and detect the flow rate in the pipeline (1) through the ultrasonic waves received by the receiver (13); and The control module is further configured to select a corresponding working mode according to the frequency of the first ultrasonic transducer (11) and the second ultrasonic transducer (12) to regulate the working mode of the first ultrasonic transducer (11) and the second ultrasonic transducer (12) so as to reduce the working time of a single ultrasonic transducer; The control module is configured to control the first ultrasonic transducer (11) and the second ultrasonic transducer (12) to work alternately before the liquid flows through the pipe (1), and obtain the frequency corresponding to the ultrasonic waves emitted by the first ultrasonic transducer (11) and the second ultrasonic transducer (12) according to the receiver (13). When both frequencies are within the preset standard deviation range, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) work in the first mode to detect the flow rate in the pipe (1) when liquid flows through the pipe (1). At this time, when the first ultrasonic transducer (11) is normal, the preset standard deviation is obtained. The total number of frequency data of the second ultrasonic transducer (12) within a time period is set, that is, the number of times the second ultrasonic transducer (12) works and the frequency of each time the second ultrasonic transducer (12) works are obtained within a preset time period. If the proportion of the number of abnormal frequencies of the second ultrasonic transducer (12) to the total number of times within the preset time period is greater than or equal to a first preset proportion, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) enter the third working mode corresponding to the second ultrasonic transducer (12), that is, the working time of the second ultrasonic transducer (12) is much less than the working time of the first ultrasonic transducer (11); If the proportion of the number of abnormal frequencies of the first ultrasonic transducer (11) to the total number of times within the preset time is less than a second preset proportion, then the first ultrasonic transducer (11) is normal.

2. The flow detection system according to claim 1, wherein: In the first working mode, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) work alternately, and the working time of the first ultrasonic transducer (11) is greater than the working time of the second ultrasonic transducer (12).

3. The flow detection system according to claim 1, wherein: The control module is further configured to, in the first working mode, when the second ultrasonic transducer (12) is normal, obtain the total number of frequency data of the first ultrasonic transducer (11) within a preset time, that is, obtain the number of times the first ultrasonic transducer (11) works within the preset time, and the frequency of each time the first ultrasonic transducer (11) works; if the proportion of the number of times the first ultrasonic transducer (11) has abnormal frequencies in the total number of times within the preset time is greater than or equal to the second preset proportion and less than the third preset proportion, then the first ultrasonic transducer (11) and the second ultrasonic transducer (12) enter the second working mode, that is, the working time of the second ultrasonic transducer (12) is equal to the working time of the first ultrasonic transducer (11); If the proportion of the number of abnormal frequencies of the second ultrasonic transducer (12) to the total number of times within the preset time is less than a first preset proportion, then the second ultrasonic transducer (12) is normal.

4. The flow detection system according to claim 3, wherein: The control module is further configured such that in the second working mode, when the second ultrasonic transducer (12) is normal, if the proportion of the number of abnormal frequency times of the first ultrasonic transducer (11) to the total number of times within the preset time is greater than or equal to a third preset proportion, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) enter the third working mode corresponding to the first ultrasonic transducer (11), that is, the working time of the second ultrasonic transducer (12) is much greater than the working time of the first ultrasonic transducer (11).

5. The flow detection system according to claim 1, wherein: The control module is further configured to calibrate the first ultrasonic transducer (11) and / or the second ultrasonic transducer (12) that has deviated when any frequency of the first ultrasonic transducer (11) and the second ultrasonic transducer (12) is outside the preset standard deviation range, that is, when the first ultrasonic transducer (11) is working, the frequency is obtained through the second ultrasonic transducer (12), and when the second ultrasonic transducer (12) is working, the frequency is obtained through the first ultrasonic transducer (11). If the frequencies of the two are not lost and the frequencies of the first ultrasonic transducer (11) and / or the second ultrasonic transducer (12) are lower than the preset standard frequency, the frequencies of the first ultrasonic transducer (11) and the second ultrasonic transducer (12) are lowered to below the smaller value of the two frequencies, and then the first ultrasonic transducer (11) and the second ultrasonic transducer (12) work in the fourth working mode; In the fourth mode, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) work alternately, and the working time of the first ultrasonic transducer (11) is shorter than the working time of the second ultrasonic transducer (12).

6. The flow detection system according to claim 5, wherein: The control module is further configured to sample the frequency of the first ultrasonic transducer (11) multiple times continuously if the frequency of the first ultrasonic transducer (11) is lost, and if the number of times the signal is lost is greater than a preset number and the positions where the signal is lost are the same, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) operate in a fourth operating mode, and the second ultrasonic transducer (12) operates at the position where the frequency of the first ultrasonic transducer (11) is lost; If the number of times the signal is lost is greater than a preset number and the positions where the loss occurs are different, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) operate in a third operating mode corresponding to the first ultrasonic transducer (11), that is, the operating time of the second ultrasonic transducer (12) is much longer than the operating time of the first ultrasonic transducer (11); If the number of times the signal is lost is less than a preset number, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) operate in a fourth operating mode.

7. The flow detection system according to claim 6, wherein: The control module is further configured to, in a fourth working mode, when the first ultrasonic transducer (11) is normal, obtain the total number of frequency data of the second ultrasonic transducer (12) within a preset time, and if the proportion of the number of abnormal frequency data of the second ultrasonic transducer (12) within the preset time to the total number is greater than or equal to a first preset proportion, then the first ultrasonic transducer (11) and the second ultrasonic transducer (12) enter the third working mode corresponding to the second ultrasonic transducer (12), that is, the working time of the second ultrasonic transducer (12) is much shorter than the working time of the first ultrasonic transducer (11); When the second ultrasonic transducer (12) is normal, if the proportion of the number of abnormal frequencies of the first ultrasonic transducer (11) to the total number of abnormal frequencies within the preset time is greater than or equal to a third preset proportion, the first ultrasonic transducer (11) and the second ultrasonic transducer (12) enter the third working mode corresponding to the first ultrasonic transducer (11), that is, the working time of the second ultrasonic transducer (12) is much greater than the working time of the first ultrasonic transducer (11).

8. A full membrane pharmaceutical water equipment using the flow detection system as claimed in claim 1, characterized in that: include: Water pretreatment system (2), suitable for treating raw water into drinking water; A water treatment system (3), which is connected to the water pretreatment system (2) and is suitable for treating direct drinking water into water for injection; The flow detection system is connected to the outlet pipe of the water quality treatment system (3) and is suitable for detecting the flow in the pipeline (1).

9. A detection method using the flow detection system according to claim 1, characterized in that: include: Ultrasonic waves are emitted by a first ultrasonic transducer (11) or a second ultrasonic transducer (12) and received by a receiver (13) to detect the flow rate in a pipeline (1); wherein: The corresponding operating mode is selected according to the frequency of the first ultrasonic transducer (11) and the second ultrasonic transducer (12) to regulate the operating mode of the first ultrasonic transducer (11) and the second ultrasonic transducer (12) so as to reduce the operating time of a single ultrasonic transducer.

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