Equipment control system

Abstract

The invention provides an equipment control system, which relates to the technical field of automatic control and comprises a data acquisition unit for acquiring N electric signals corresponding to N temperature measuring points of target equipment, a data processing unit for processing the N electric signals and acquiring N temperature data, and a man-machine interaction unit for receiving an operation instruction of an operator, m pieces of target temperature data are determined from the N pieces of temperature data according to the operation instruction, the M pieces of target temperature data are sent to the control unit, and the control unit is used for receiving the M pieces of target temperature data, conducting interlocking logic calculation on the M pieces of target temperature data, outputting a control signal and determining M pieces of target temperature data from the N pieces of temperature data, the actual temperature of the target equipment is reflected more accurately, the accuracy and reliability of the temperature data are improved, interlocking logic calculation is carried out on the M target temperature data, control signals are output, more accurate action control and higher working efficiency are achieved, and the flexibility of a control system is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic control, and particularly to a device control system. Background Art

[0002] In the field of automatic control, for example, various control systems such as Distributed Control System (DCS for short), Safety Instrumented System (SIS for short), and Digital Electro-Hydraulic Control System (DEH for short) need to perform automatic production operation and safety protection according to pre-edited logic programs. Among them, interlock logic is one of the important means to ensure the safety of the control process. Common methods in interlock logic include one-out-of-one, two-out-of-two, two-out-of-three, one-out-of-eight, etc. However, with the development of the field of automatic control and the increasing importance of safe production of production devices, the existing interlock logic can no longer meet the requirements of high-precision operation and high-demand safety protection. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this purpose, an embodiment of the present invention provides a device control system.

[0004] The device control system according to an embodiment of the present invention includes: a data acquisition unit, a data processing unit, a human-machine interaction unit, and a control unit. Among them, the data acquisition unit is used to acquire N electrical signals corresponding to N temperature measurement points of a target device, where N is a positive integer; the data processing unit is used to process the N electrical signals to obtain N temperature data; the human-machine interaction unit is used to receive an operation instruction from an operator, and according to the operation instruction, determine M target temperature data from the N temperature data, and send the M target temperature data to the control unit, where M is a positive integer and M < N; the control unit is used to receive the M target temperature data, perform interlock logic calculation on the M target temperature data, and output a control signal, where the control signal is used to control the target device.

[0005] In some embodiments, the data acquisition unit includes a temperature measurement element and a temperature transmitter arranged at each temperature measurement point. Among them, the temperature measurement element is used to acquire the temperature value corresponding to the temperature measurement point; the temperature transmitter is used to convert the temperature value into an electrical signal.

[0006]

[0007] ​In some embodiments, the process of generating the operation instruction includes: obtaining the normal temperature range and the target temperature range of the task currently executed by the target device; initially screening the N temperature data according to the normal temperature range, and then rescreening the screened temperature data according to the target temperature range to generate an operation instruction.

[0008] In some embodiments, the human-computer interaction unit is configured to: display the N temperature data, where the N temperature data are configured with an initial state.

[0009] In some embodiments, the human-computer interaction unit is configured to: after determining M target temperature data, update the initial state of the M target temperature data to a target state.

[0010] In some embodiments, the device control unit is further configured to: determine whether all of the M target temperature data are greater than a preset temperature warning threshold and less than a preset temperature interlock threshold; in response to all of the M target temperature data being greater than the temperature warning threshold and less than the temperature interlock threshold, output a warning control signal.

[0011] In some embodiments, the device control unit is further configured to: determine whether all of the M target temperature data are greater than or equal to a preset temperature interlock threshold; in response to all of the M target temperature data being greater than or equal to the temperature interlock threshold, output an interlock control signal.

[0012] An equipment control system provided by the present disclosure includes: a data acquisition unit, a data processing unit, a human-machine interaction unit, and a control unit. Among them, the data acquisition unit is used to acquire N electrical signals corresponding to N temperature measurement points of a target device, where N is a positive integer. The data processing unit is used to process the N electrical signals to obtain N temperature data. The human-machine interaction unit is used to receive operation instructions from an operator, and according to the operation instructions, determine M target temperature data from the N temperature data, and send the M target temperature data to the control unit, where M is a positive integer and M < N. The control unit is used to receive the M target temperature data, perform interlock logic calculation on the M target temperature data, and output a control signal, where the control signal is used to control the target device. Therefore, the equipment control system provided by the present disclosure determines M target temperature data from N temperature data, avoiding the problem that the entire system may fail due to the failure of a single temperature measurement point, greatly improving the reliability of the system. By performing interlock logic calculation on the M target temperature data and outputting a control signal, more precise action control and higher working efficiency are achieved, enhancing the flexibility of the control system. At the same time, by determining M target temperature data, the dependence on high-cost and high-precision components is reduced. Also, since there are multiple temperature measurement points to choose from, when maintaining and replacing faulty components, it will not have too much impact on the operation of the entire system, improving the maintainability of the system.

[0013] Additional aspects and advantages of the present disclosure will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present disclosure. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of an equipment control system provided by an embodiment of the present disclosure. Detailed Embodiments

[0015] The embodiments of the present invention will be described in detail below, and the examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0016] The equipment control system of an embodiment of the present invention will be described below with reference to the drawings.

[0017] Figure 1 It is a schematic diagram of an equipment control system provided by an embodiment of the present disclosure. As Figure 1 shown, the equipment control system 1000 includes: a data acquisition unit 100, a data processing unit 200, a human-machine interaction unit 300, and a control unit 400.

[0018] Among them, the data acquisition unit 100 is configured to acquire N electrical signals corresponding to N temperature measurement points of a target device, where N is a positive integer.

[0019] It should be noted that the present disclosure does not limit the type of the target device, and it can be selected according to the actual situation.

[0020] Optionally, the target device can be a large boiler furnace; optionally, the target device can be a reactor.

[0021] In the embodiments of the present disclosure, in order to more accurately and reliably monitor the temperature of the target device, N measurement points can be pre-arranged on the target device, and the data acquisition unit 100 acquires N electrical signals corresponding to the N temperature measurement points of the target device.

[0022] It should be noted that the present disclosure does not limit the number of temperature measurement points, and it can be set according to the actual situation. For example, the number of temperature measurement points can be 8, or for another example, the number of temperature measurement points can also be 10.

[0023] As Figure 1 shown, in some embodiments, the data acquisition unit 100 includes a temperature measurement element 10 and a temperature transmitter 11 arranged at each temperature measurement point.

[0024] Among them, the temperature measurement element 10 is configured to acquire the temperature value corresponding to the temperature measurement point.

[0025] It should be noted that the present disclosure does not limit the temperature measurement element. Optionally, the temperature measurement element can be a thermal resistance sensor, and the working principle of the thermal resistance sensor is based on the characteristic that the resistance value of the thermal resistance material changes with the change of temperature.

[0026] It should be noted that the thermal resistance material is a conductor. When the temperature changes, the resistance value of the thermal resistance material will change. Usually, the resistance value of the thermal resistance material decreases with the increase of temperature and increases with the decrease of temperature. Among them, the measurement circuit of the thermal resistance sensor usually includes a thermal resistance element and a reference resistance element. The thermal resistance element is the core part of the thermal resistance sensor, and the resistance value of the thermal resistance material changes with the change of temperature. The reference resistance element is a resistance used to calibrate the resistance value of the thermal resistance element, and the resistance value is usually between 10K and 100K. When the thermal resistance sensor is affected by temperature changes, its resistance value will change. The measurement circuit will measure the resistance value difference between the thermal resistance element and the reference resistance element, and calculate the temperature value received by the sensor according to the measurement result.

[0027] Among them, the temperature transmitter 11 is configured to convert the temperature value into an electrical signal.

[0028] Among them, the working principle of the temperature transmitter is based on the thermoelectric effect, which refers to the potential difference generated at the contact point of two different metals due to different temperatures.

[0029] It should be noted that in a temperature transmitter, a thermal resistance temperature sensing element generally composed of two different metals is connected to the temperature measurement point to form a thermoelectric circuit. When the temperature of the temperature measurement point changes, the temperature in the thermoelectric circuit also changes accordingly. The thermal resistance temperature sensing element will generate a weak electrical signal related to the temperature. The temperature transmitter collects and amplifies this weak signal and converts it into a standard current signal or voltage signal. Among them, the temperature transmitter generally has an amplifier circuit and a linearization circuit inside, which are used to enhance and adjust the signal output by the sensor. The amplifier circuit can amplify the weak signal to an appropriate range for subsequent data processing and transmission. The linearization circuit can correct the non-linear temperature-voltage or temperature-current characteristics to ensure the accurate corresponding relationship between the output electrical signal and the measured temperature value.

[0030] It should be noted that the temperature transmitter should have anti-interference ability. In an industrial production environment, there are often various interference factors such as electromagnetic interference, temperature gradient, and vibration. These factors will affect the signal transmission and accuracy. The temperature transmitter can reduce external interference by using shielding, filtering, etc. to ensure the stability and reliability of the electrical signal.

[0031] Among them, the output signal of the temperature transmitter is generally a standard signal (electrical signal), for example: a 4-20mA current signal or a 0-10V voltage signal. By converting the temperature value into an electrical signal, it is beneficial for subsequent transmission and processing.

[0032] Among them, the data processing unit 200 is used to process N electrical signals to obtain N temperature data.

[0033] It should be noted that the data processing unit 200 at least includes a control system input (INPUT, abbreviated as I) / output (OUTPUT, abbreviated as O) card, which receives and processes the electrical signal output by the temperature transmitter to obtain N temperature data.

[0034] For example, the control system I / O card receives the electrical signal output by the temperature transmitter through the input channel, and performs preprocessing operations on the received electrical signal, such as amplification and filtering and other preprocessing operations to eliminate noise and interference, and converts the preprocessed electrical signal into a digital signal to obtain N temperature data. If the number of temperature measurement points is 8, then 8 temperature data SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 can be obtained.

[0035] Among them, the human-machine interaction unit 300 is configured to receive operation instructions from an operator, determine M target temperature data from N temperature data according to the operation instructions, and send the M target temperature data to the control unit, where M is a positive integer and M < N.

[0036] It should be noted that in the related art, for multiple temperature measurement points of a target device, it is difficult to online eliminate or eliminate with great difficulty the temperature measurement points that are not representative or faulty. Once the relevant interlock logic is put into operation, during the operation period, the operator cannot make flexible selections and adjustments according to the actual situation, resulting in an impact on the safe and stable operation of the target device.

[0037] In the embodiments of the present disclosure, the normal temperature range and the target temperature range for the current task executed by the device can be obtained. According to the normal temperature range, the N temperature data are initially screened, and according to the target temperature range, the screened temperature data are screened again to generate operation instructions.

[0038] For example, for the target device 1, the target device 1 is currently executing task X. The normal temperature range for the target device 1 to execute task X is [a, b], and the target temperature range is [c, d]. The N temperature data can be initially screened according to the normal temperature range [a, b]. Through the initial screening process, abnormal temperature data can be eliminated, for example: eliminating too high and too low temperature data, obtaining the initially screened temperature data, and according to the target temperature range [c, d], the screened temperature data are screened again. Through the re-screening process, the temperature data most suitable for executing task X can be selected. Through the above process, operation instructions can be generated.

[0039] In the embodiments of the present disclosure, the human-machine interaction unit 300 can determine M target temperature data from N temperature data by receiving operation instructions and according to the operation instructions.

[0040] For example, for task X1, through the operation instruction x1, 3 target temperature data can be determined from 8 temperature data; for task X2, through the operation instruction x2, 4 target temperature data can be determined from 10 temperature data.

[0041] In the embodiments of the present disclosure, after obtaining the target temperature data, the target temperature data can be sent to the control unit for subsequent control of the target device.

[0042] Among them, the control unit 400 is configured to receive M target temperature data, perform interlock logic calculation on the M target temperature data, and output a control signal, where the control signal is used to control the target device.

[0043] Optionally, it can be determined whether the M target temperature data are all greater than a preset temperature warning threshold and all less than a preset temperature interlock threshold. In response to the M target temperature data being all greater than the temperature warning threshold and all less than the temperature interlock threshold, a warning control signal is output, and according to the warning control signal, the target device is controlled to issue a warning reminder.

[0044] Optionally, it can be determined whether the M target temperature data are all greater than a preset temperature interlock threshold. In response to the M target temperature data being all greater than the temperature interlock threshold, an interlock control signal is output, and according to the interlock control signal, the target device is controlled to stop.

[0045] The equipment control system provided by the present disclosure includes: a data acquisition unit, a data processing unit, a human-machine interaction unit, and a control unit. Among them, the data acquisition unit is used to acquire N electrical signals corresponding to N temperature measurement points of the target device, where N is a positive integer. The data processing unit is used to process the N electrical signals to obtain N temperature data. The human-machine interaction unit is used to receive an operation instruction from an operator, and according to the operation instruction, determine M target temperature data from the N temperature data, and send the M target temperature data to the control unit, where M is a positive integer and M < N. The control unit is used to receive the M target temperature data, perform an interlock logic calculation on the M target temperature data, and output a control signal, where the control signal is used to control the target device. Thus, the equipment control system provided by the present disclosure determines M target temperature data from the N temperature data, avoiding the problem that the entire system may fail due to the failure of a single temperature measurement point, greatly improving the reliability of the system. By performing an interlock logic calculation on the M target temperature data and outputting a control signal, more precise action control and higher work efficiency are achieved, enhancing the flexibility of the control system. At the same time, by determining the M target temperature data, the dependence on high-cost and high-precision components is reduced. At the same time, since there are multiple temperature measurement points to choose from, when maintaining and replacing faulty components, it will not have too much impact on the operation of the entire system, improving the maintainability of the system.

[0046] In some embodiments, the human-machine interaction unit 300 is used to: display the N temperature data, where the N temperature data are configured with an initial state.

[0047] Among them, the initial state can be understood as an unselected state.

[0048] In some embodiments, the human-machine interaction unit 300 is further used to: after determining the M target temperature data, update the initial state of the M target temperature data to a target state.

[0049] Among them, the target state can be understood as a selected state.

[0050] In the embodiments of the present disclosure, after determining M target temperature data, the human-computer interaction unit 300 will automatically update the initial state of the M target temperature data to the target state.

[0051] For example, for the M target temperature data, the background color of the M target temperature data can be updated to a highlighted state to distinguish the target temperature data from other temperature data.

[0052] Optionally, after initially screening the N temperature data according to the normal temperature range, the background color of the abnormal temperature data can be updated to gray to distinguish the abnormal temperature data from other data.

[0053] In some embodiments, the device control unit 400 is further configured to: determine whether all of the M target temperature data are greater than a preset temperature warning threshold and less than a preset temperature interlock threshold, and in response to all of the M target temperature data being greater than the temperature warning threshold and less than the temperature interlock threshold, output a warning control signal.

[0054] It should be noted that the present disclosure does not limit the setting of the temperature warning threshold T th1 and the temperature interlock threshold T th2 , which can be set according to the actual situation.

[0055] For example, for the target temperature data T 1 , T 2 and T 3 , if T 1 , T 2 and T 3 are all greater than the temperature warning threshold and less than the temperature interlock threshold, that is, T th1 < T 1 < T th2 , T th1 < T 2 < T th2 and T th1 < T 3 < T th2 , then a warning control signal is output.

[0056] In the embodiments of the present disclosure, after outputting the warning control signal, the warning control signal can be sent to the target device. When the target device receives the warning control signal, a warning reminder can be generated and corresponding operations can be performed according to the preset response logic. For example: adjusting the working parameters to reduce the temperature, starting an additional heat dissipation device, or sending a warning notification to the operator, etc.

[0057] It should be noted that the present disclosure does not limit the warning reminder, which can be set according to the actual situation. For example: the warning reminder can be an "acoustic and optical warning reminder", or for another example: the warning reminder can be a "voice warning reminder."

[0058] In some embodiments, the device control unit 400 is further configured to: determine whether M target temperature data are all greater than or equal to a preset temperature interlock threshold, and in response to the M target temperature data all being greater than or equal to the temperature interlock threshold, output an interlock control signal.

[0059] For example, for the target temperature data T 1 , T 2 and T 3 , if T 1 , T 2 and T 3 are all greater than or equal to the temperature interlock threshold, that is, T 1 ≥T th2 , T 2 ≥T th2 and T 3 ≥T th2 , then an interlock control signal is output.

[0060] In the embodiments of the present disclosure, after the interlock control signal is output, the interlock control signal may be sent to the target device. When the target device receives the interlock control signal, it performs corresponding operations according to the preset response logic, such as: immediately stopping working, closing key components, and other operations.

[0061] In summary, for the device control system provided by the embodiments of the present disclosure, the temperature data of different temperature measurement points may vary due to factors such as location and environment. By determining M target temperature data from N temperature data, the actual temperature situation of the target device can be more accurately reflected, effectively avoiding the error of a single temperature measurement point, improving the accuracy and reliability of the temperature data, and performing subsequent comprehensive judgment and control based on the target temperature data, so that precise control of the temperature can be achieved in various complex working environments, ensuring that the temperature always remains within the set range. At the same time, when individual temperature measurement points fail or are interfered with, compensation and adjustment can be performed through other normal measurement points, and the entire system will not get out of control due to a single fault point, reducing the risk of production interruption or equipment damage caused by temperature measurement failures in the system, and reducing the labor intensity of operators, improving the overall reliability and availability of the system.

[0062] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as a limitation on the present invention.

[0063] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0064] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0066] In the present invention, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0067] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A device control system, characterized in that: The system comprises: a data acquisition unit, a data processing unit, a human-computer interaction unit and a control unit, wherein: The data acquisition unit is used to acquire N electrical signals corresponding to N temperature measurement points of the target device, wherein N is a positive integer; The data processing unit is used to process the N electrical signals to obtain N temperature data; The human-computer interaction unit is used to receive an operation instruction from an operator, determine M target temperature data from the N temperature data according to the operation instruction, and send the M target temperature data to the control unit, wherein M is a positive integer, M<N; The control unit is used to receive the M target temperature data, perform interlocking logic calculation on the M target temperature data, and output a control signal, wherein the control signal is used to control the target device.

2. The system according to claim 1, characterized in that The data acquisition unit includes a temperature measuring element and a temperature transmitter arranged at each temperature measuring point, wherein: The temperature measuring element is used to obtain the temperature value corresponding to the temperature measuring point; The temperature transmitter is used to convert the temperature value into an electrical signal.

3. The system according to claim 1, characterized in that The process of generating the operation instruction includes: Obtaining a normal temperature range and a target temperature range for a task currently being performed by the target device; The N temperature data are initially screened according to the normal temperature range, and the screened temperature data are screened again according to the target temperature range to generate an operation instruction.

4. The system according to claim 1, characterized in that The human-computer interaction unit is used for: The N temperature data are displayed, wherein the N temperature data are configured with an initial state.

5. The system according to claim 4, characterized in that The human-computer interaction unit is used for: In response to determining the M target temperature data, the initial states of the M target temperature data are updated to the target states.

6. The system according to claim 1, characterized in that The device control unit is also used for: Determine whether the M target temperature data are all greater than a preset temperature warning threshold and are all less than a preset temperature interlock threshold; In response to the M target temperature data being all greater than the temperature warning threshold and all less than the temperature interlocking threshold, an early warning control signal is output.

7. The system according to claim 1, characterized in that The device control unit is also used for: Determine whether the M target temperature data are all greater than or equal to a preset temperature interlock threshold; In response to the M target temperature data being greater than or equal to the temperature interlock threshold, an interlock control signal is output.

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