Voltage and current step detection and limit judgment method of environmental protection equipment

Abstract

The invention discloses a voltage and current step detection and limit judgment method for environmental protection equipment. The method comprises the following steps: pre-creating voltage and current reference value step-shaped parameter lines, reference detection times and re-detection preset time; thirdly, acquiring three-time voltage and current reference fixed values as reference values through a three-time step increasing mode, carrying out load abnormity judgment, after the three-time judgment is qualified, carrying out multiple times of judgment on the load abnormity through the voltage and current reference fixed values in a slope increasing mode, and if the load is abnormal, judging whether the load is abnormal or not; and returning to the initial detection step of the three-step progressive increase, and performing a re-judgment process when the obtained voltage reference fixed value and the current reference fixed value are lower than the voltage value and the current value of the first-step progressive increase. According to the invention, by introducing an automatic judgment program and an automatic adaptation program of voltage and current, manual intervention is reduced, complex working conditions can be adapted, the safety and stability of equipment use are improved, and the risk of flameout is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field related to step detection of voltage and current in environmental protection equipment, and in particular to a voltage and current step detection and limit judgment method for environmental protection equipment. Background Art

[0002] Environmental protection equipment refers to mechanical products, structures and systems manufactured and built by production units or construction installation units to control environmental pollution and improve environmental quality. As the application scope of environmental protection equipment continues to expand, it is not only used in industrial production and enterprises, but also begins to enter homes and public places. At present, environmental protection equipment is generally used in the following places:

[0003] 1. Industrial production sites: In large-scale manufacturing, chemical plants, automobile production lines, smelting, printing and other industries, a large amount of waste gas and wastewater are discharged. If there is no appropriate environmental protection equipment to treat them, it will cause serious pollution and even threaten people's lives and health.

[0004] 2. Urban construction sites: Large-scale construction and road construction will generate a lot of dust, noise and sewage, and these pollutants also require necessary environmental protection equipment to treat.

[0005] 3. Medical institutions: In hospitals and other medical institutions, a considerable amount of medical waste, drug residues and harmful gases will be generated, which require appropriate environmental protection equipment to handle.

[0006] 4. Rural life: The processes of farmland irrigation and crop fertilization in rural areas will also cause certain pollution to the environment. Necessary environmental protection equipment should be used to deal with these pollutions.

[0007] Therefore, the working environment of environmental protection equipment is relatively complex and harsh. It is particularly important to ensure the stability and safety of environmental protection equipment in such harsh environment, ensure that it can work stably for a long time, and extend the working efficiency of environmental protection equipment.

[0008] At present, there are methods for remote automatic detection of environmental protection equipment, such as the remote automatic monitoring system for environmental protection equipment disclosed in application number 201410099878.5, which consists of three parts: data acquisition, monitoring center and user interface. It is based on the fact that environmental protection equipment needs electricity when working. By monitoring the current and voltage of the environmental protection equipment, a data remote transmission channel combining wired (Internet) and wireless (wifi) networks is used to remotely transmit the automatically monitored equipment operation data back to the environmental protection equipment monitoring center. This method mainly determines the current state of the environmental protection equipment by detecting the voltage and current of the environmental protection equipment, and does not realize how to ensure the stability and safety of the environmental protection equipment in such a harsh environment, and how to ensure that the environmental protection equipment can work stably for a long time and extend the service life of the environmental protection equipment. Therefore, it needs to be improved. Summary of the invention

[0009] The purpose of the present invention is to provide a voltage and current step detection and limit judgment method for environmental protection equipment, which solves the problem that the existing technology of environmental protection equipment cannot ensure the stability and safety of the environmental protection equipment in harsh environments and extend the service life of the environmental protection equipment.

[0010] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0011] The present invention is a voltage and current step detection and limit judgment method for environmental protection equipment, comprising the following steps:

[0012] S1, pre-create a voltage safety benchmark step parameter curve, a current benchmark value step parameter line, a benchmark detection number Q and a re-detection preset time M;

[0013] S2, the first step: using a relatively low voltage reference fixed value and a relatively low current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the primary reference fixed value T0, to softly excite the device;

[0014] S3, after the reference fixed value set by the soft excitation is exceeded, it is determined whether the load state is normal under the current voltage reference fixed value and current reference fixed value. If the load is abnormal, the load is protected at this time, and the program returns to step S2; if the load is normal, the program proceeds to the second step;

[0015] S4, step 2: using a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the current detection reference value -T1, and the current detection reference value -T1 is higher than the value of the primary reference fixed value T0 in the first step, and then within the set time period, continue to judge whether the load state is normal, if the load is normal, enter the third step; if the load is abnormal, the program returns to step S2;

[0016] S5, the third step, taking a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the current detection reference value 2 T2, and the current detection reference value 2 T2 is relatively higher than the current detection reference value 1 T1, and then within the set time period, continue to judge whether the load state is normal, if the load is normal, enter step S6; if the load is abnormal, the program returns to step S2;

[0017] S6, then take a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the current detection reference value three T3, and the current detection reference value three T3 is higher than the current detection reference value two T2, and continue to judge whether the load state is normal. If the load is normal, after the detection number +1; judge whether the current detection number M is greater than or equal to the reference detection number Q, if so, enter step S7; if not, return to step S6, at this time, the current detection reference value three T3 obtained is higher than the previous current detection reference value three T3; if the load is abnormal, the program returns to step S2;

[0018] S7, stop the real-time collection of voltage and current, then start timing, and determine whether the current timing time of stopping the inspection is greater than the preset re-detection time M. If so, return to step S2; if less, do not do anything.

[0019] Preferably, the reference detection number Q in step S1 is 5 or more.

[0020] Preferably, the preset re-detection time M in step S1 is 15 minutes, 30 minutes or more.

[0021] Preferably, the current detection reference value T3 obtained multiple times in step S6 increases in a slope manner.

[0022] Preferably, in step S7, if it is determined that the current timing time for stopping the inspection is greater than the preset time M for re-detection, return to step S2, and at this time obtain a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as a new voltage and current fixed value.

[0023] Preferably, in each step, when it is necessary to return to step S2, a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line are obtained as a new voltage and current fixed value.

[0024] Preferably, in each step, the specific method of judging whether the load is abnormal is to pre-set a voltage and current ratio range. If the voltage and current detected in real time are within the preset voltage and current ratio range, the load is judged to be normal. If they are lower than the preset voltage and current ratio range, it means that the load is abnormal.

[0025] Preferably, the method is also based on a PLC control program and realizes data networking with the cloud to obtain data transmission.

[0026] Preferably, the method is also based on PLC control and APP system connection to achieve remote monitoring, data control and data transmission.

[0027] The present invention has the following beneficial effects:

[0028] 1. The present invention uses the feedback values ​​of voltage and current to judge the working status of the current equipment in real time and adapt to fault troubleshooting and operation under abnormal conditions;

[0029] 2. By introducing the automatic judgment program and automatic adaptation program of voltage and current, manual intervention is reduced, it can adapt to complex working conditions, improve the safety and stability of equipment use, and reduce the risk of flameout. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a flow chart of a voltage and current step detection and limit determination method for an environmental protection device in Example 1;

[0031] Figure 2 A voltage safety reference step parameter curve diagram in Example 1;

[0032] Figure 3 This is a current safety benchmark step parameter curve diagram in Example 1. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] See also Figure 1 As shown, the present embodiment discloses a voltage and current step detection and limit judgment method for environmental protection equipment, including the following steps:

[0036] S1, pre-create a voltage safety benchmark step parameter curve, a current benchmark value step parameter line, a benchmark detection number Q and a re-detection preset time M;

[0037] S2, the first step: using a relatively low voltage reference fixed value and a relatively low current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the primary reference fixed value T0, to softly excite the device;

[0038] S3, after the reference fixed value set by the soft excitation is exceeded, it is determined whether the load state is normal under the current voltage reference fixed value and current reference fixed value. If the load is abnormal, the load is protected at this time, and the program returns to step S2; if the load is normal, the program proceeds to the second step;

[0039] S4, step 2: using a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the current detection reference value -T1, and the current detection reference value -T1 is higher than the value of the primary reference fixed value T0 in the first step, and then within the set time period, continue to judge whether the load state is normal, if the load is normal, enter the third step; if the load is abnormal, the program returns to step S2;

[0040] S5, the third step, taking a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the current detection reference value 2 T2, and the current detection reference value 2 T2 is relatively higher than the current detection reference value 1 T1, and then within the set time period, continue to judge whether the load state is normal, if the load is normal, enter step S6; if the load is abnormal, the program returns to step S2;

[0041] S6, then take a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the current detection reference value three T3, and the current detection reference value three T3 is higher than the current detection reference value two T2, and continue to judge whether the load state is normal. If the load is normal, after the detection number +1; judge whether the current detection number M is greater than or equal to the reference detection number Q, if so, enter step S7; if not, return to step S6, the current detection reference value three T3 obtained at this time is higher than the previous current detection reference value three T3, if the load is abnormal, the program returns to step S2;

[0042] S7, stop the real-time collection of voltage and current, then start timing, and determine whether the current timing time of stopping the inspection is greater than the preset re-detection time M. If so, return to step S2; if less, do not do anything.

[0043] The present invention determines the working state of the current equipment in real time through the feedback values ​​of voltage and current, and adapts to fault troubleshooting and operation under abnormal conditions. The present invention introduces an automatic judgment program and an automatic adaptation program for voltage and current, which reduces manual intervention, can adapt to complex working conditions, improves the safety and stability of equipment use, and reduces the risk of flameout.

[0044] Preferably, the reference detection number Q in step S1 is 5 or more.

[0045] Preferably, the preset re-detection time M in step S1 is 15 minutes, 30 minutes or more.

[0046] Preferably, the current detection reference value T3 obtained multiple times in step S6 increases in a slope manner.

[0047] Preferably, in step S7, if it is determined that the current timing time for stopping the inspection is greater than the preset time M for re-detection, return to step S2, and at this time obtain a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as a new voltage and current fixed value.

[0048] Preferably, in each step, when it is necessary to return to step S2, a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line are obtained as a new voltage and current fixed value.

[0049] Preferably, in each step, the specific method of judging whether the load is abnormal is to pre-set a voltage and current ratio range. If the voltage and current detected in real time are within the preset voltage and current ratio range, the load is judged to be normal. If they are lower than the preset voltage and current ratio range, it means that the load is abnormal.

[0050] Preferably, the method is also based on a PLC control program and realizes data networking with the cloud to obtain data transmission, and realizes networking with the cloud through PLC control to facilitate subsequent remote data transmission and control.

[0051] Preferably, the method is also based on the connection between PLC control and APP system to realize remote monitoring, data control and data transmission. By connecting with the APP system through PLC control, it is convenient for later remote monitoring and data replacement control operations, further improving work efficiency.

[0052] The specific implementation of the present invention is as follows:

[0053] (like Figure 2 , Figure 3As shown in the first step: take a relatively low voltage reference fixed value and a relatively low current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the primary reference fixed value T0 (the primary reference fixed value T0 at this time includes two numbers, namely, the voltage reference fixed value U 01 and the current reference fixed value I 02 , assuming that the voltage reference is fixed at 5V and the current reference is fixed at 1A), soft-stimulate the device;

[0054] S3, after the reference fixed value set by the soft excitation, judge under the state of the current voltage reference fixed value and current reference fixed value; if it is assumed that the input voltage reference fixed value is 5V, the real-time voltage output after the load is 4.5V (due to the preset voltage ratio range, if the voltage safety ratio base is set to 0.9 coefficient, the minimum output safety voltage should be 5V×0.9=4.5V, and the preset voltage ratio range is between 4.5V-5V), indicating that the current load is normal. If the real-time voltage output after the load is 4V, it means that the current voltage is too low and the output is abnormal; according to the above method, the current is detected. If the current and voltage are both lower than the preset ratio range, it means that the current load is abnormal, and the program returns to step S2; if the load is normal, enter the second step; Step 2: Take a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the current detection reference value-T1 (at this time, the current detection reference value-T1 contains two numbers, which are the voltage reference fixed value U 11 and the current reference fixed value I 12 ), and the current detection reference value T1 is higher than the value of the primary reference fixed value T0 in the first step, and then within the set time period, continue to judge whether the load state is normal. If the load is normal, enter the third step; if the load is abnormal, the program returns to step S2; the third step, a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line are used as the current detection reference value T2 (at this time, the current detection reference value T2 contains two numbers, which are the voltage reference fixed value U 21 and the current reference fixed value I 22 ), and the current detection reference value 2 T2 is relatively higher than the current detection reference value 1 T1, and then within the set time period, continue to determine whether the load state is normal. If the load is normal, proceed to step S6; if the load is abnormal, the program returns to step S2;

[0055] Then, a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line are taken as the current detection reference value three T3 (in the current step S6, each reference value is incrementally climbed in a certain slope, and when the detection voltage or climb is too high, the detection is rewritten and returned to step S2, and a rewritten primary reference fixed value T0 is selected, and the new primary reference fixed value T0 is lower than the original primary reference fixed value T0), and the current detection reference value three T3 (at this time, the current detection reference value two T3 contains two numbers, which are the voltage reference fixed value U 31 and the current reference fixed value I 32 That is, at each retest, the voltage reference fixed value U 31 and the current reference fixed value I 32 The value is obtained in an incremental manner as a reference value) and is higher than the current detection reference value T2. Continue to determine whether the load state is normal. If the load is normal, after the detection times +1 (before entering step S6, the initial times are 0, and each detection times +1 is processed); determine whether the current detection times M is greater than or equal to the reference detection times Q (if the preset reference detection times Q is 6, if the current detection times M = 7, it means that the current detection times are greater than the reference detection times Q = 6, if the current detection times M = 4, it means that the current detection times are less than the reference detection times Q = 6, and it should be noted that when the current detection times M is equal to the reference detection times Q, it is also considered to be greater than the state). If so, stop the voltage and current Real-time acquisition, then timing, and determine whether the current timing time of stopping inspection is greater than the preset time M for re-detection. If greater, return to step S2; if less, do not do anything; if not, return to step S6. The current detection reference value T3 obtained at this time is higher than the previous current detection reference value T3. If the load is abnormal, the program returns to step S2. Therefore, the present invention uses the feedback values ​​of voltage and current to determine the current working status of the equipment in real time, and adapt to fault troubleshooting and operation under abnormal conditions. The present invention introduces an automatic judgment program and an automatic adaptation program for voltage and current, which reduces manual intervention, can adapt to complex working conditions, improves the safety and stability of equipment use, and reduces the risk of flameout.

[0056] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments, any equivalent replacement of some of the technical features therein, and any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A voltage and current step detection and limit judgment method for environmental protection equipment, characterized in that: The following steps are involved: S1, pre-create a voltage safety benchmark step parameter curve, a current benchmark value step parameter line, a benchmark detection number Q and a re-detection preset time M; S2, the first step: using a relatively low voltage reference fixed value and a relatively low current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the primary reference fixed value T0, to softly excite the device; S3, after the reference fixed value set by the soft excitation is exceeded, judging in the state of the current voltage reference fixed value and the current reference fixed value; Whether the load status is normal, if the load is abnormal, the load is protected at this time, and the program returns to step S2; If the load is normal, go to the second step; S4, step 2: using a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the current detection reference value - T1, and the current detection reference value - T1 is higher than the value of the primary reference fixed value T0 in the first step, and then within the set time period, continue to judge whether the load state is normal, if the load is normal, enter the third step; If the load is abnormal, the program returns to step S2; S5, the third step, taking a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the current detection reference value 2 T2, and the current detection reference value 2 T2 is relatively higher than the current detection reference value 1 T1, and then within the set time period, continue to judge whether the load state is normal, if the load is normal, enter step S6; If the load is abnormal, the program returns to step S2; S6, then take a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line as the current detection reference value three T3, and the current detection reference value three T3 is higher than the current detection reference value two T2, and continue to judge whether the load state is normal. If the load is normal, after the detection number +1; judge whether the current detection number M is greater than or equal to the reference detection number Q, if so, enter step S7; if not, return to step S6, and the current detection reference value three T3 obtained at this time is higher than the previous current detection reference value three T3; If the load is abnormal, the program returns to step S2; S7, stop the real-time collection of voltage and current, then start timing, and determine whether the current timing time of stopping the inspection is greater than the preset re-detection time M. If so, return to step S2; if less, do not do anything.

2. The voltage and current step detection and limit judgment method of an environmental protection device according to claim 1 is characterized in that: In step S1 , the reference detection number Q is set to 5 or more.

3. The voltage and current step detection and limit judgment method of an environmental protection device according to claim 1, characterized in that: In step S1 , the preset time M is re-detected to be 15 minutes, 30 minutes or more.

4. The voltage and current step detection and limit judgment method of an environmental protection device according to claim 1, characterized in that: The current detection reference value T3 obtained multiple times in step S6 increases in a slope manner.

5. The voltage and current step detection and limit judgment method of an environmental protection device according to claim 1, characterized in that: In step S7, if it is determined that the current stop inspection timing time is greater than the re-detection preset time M, return to step S2. At this time, a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line are obtained as a new voltage and current fixed value.

6. The voltage and current step detection and limit judgment method of an environmental protection device according to claim 1, characterized in that: In each step, when it is necessary to return to step S2, a voltage reference fixed value and a current reference fixed value on the voltage safety reference step parameter curve and the current reference value step parameter line are obtained as a new voltage and current fixed value.

7. The voltage and current step detection and limit judgment method of environmental protection equipment according to claim 1, characterized in that: In each step, the specific method of judging whether the load is abnormal is to pre-set a voltage and current ratio range. If the voltage and current detected in real time are within the preset voltage and current ratio range, the load is judged to be normal. If they are lower than the preset voltage and current ratio range, it means that the load is abnormal.

8. The voltage and current step detection and limit judgment method of an environmental protection device according to claim 1, characterized in that: The method is also based on the PLC control program and realizes data networking with the cloud to obtain data transmission.

9. The voltage and current step detection and limit judgment method of environmental protection equipment according to claim 8, characterized in that: The method is also based on the connection between PLC control and APP system to realize remote monitoring, data control and data transmission.

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