An energy-saving control system for high and low temperature test chambers

Abstract

The present invention discloses an energy-saving control system for a high and low temperature test chamber, which relates to the technical field of test and detection equipment control, and solves the technical problem that the existing technology is difficult to achieve a balance between efficiency and energy consumption, resulting in high energy consumption of the high and low temperature test chamber; the present invention calculates and obtains a balance coefficient based on environmental segments and energy consumption data corresponding to several power parameters in work simulation data, and establishes a power control line based on the balance coefficient and environmental segment data; the present invention obtains the optimal power output of each environmental segment through simulation, and can ensure that the high and low temperature test chamber can achieve a balance between efficiency and energy consumption through the power control line; the present invention compares the balance coefficients in several balance association groups, selects the power parameter corresponding to the maximum balance coefficient as the first power; selects the power parameter whose balance coefficient is second only to the maximum balance coefficient as the second power; after comparing the balance coefficients of each environmental segment, the present invention selects a spare power parameter, so that the power control line after adjustment can reduce the equipment load.

Description

Technical Field

[0001] The present invention belongs to the field of test and detection equipment control, and relates to an energy-saving control technology for a high and low temperature test chamber, in particular to an energy-saving control system for a high and low temperature test chamber. Background Art

[0002] High and low temperature test chambers are suitable for high and low temperature reliability testing of industrial products. They primarily test the performance of components and materials in industrial products under conditions of high and low temperature (alternating) cycles. Because high and low temperature test chambers require continuous operation and constantly adjust the temperature and humidity during operation, energy consumption control is extremely important.

[0003] During the control process of a high- and low-temperature test chamber, due to the large parameter control temperature range and the pursuit of parameter control efficiency, the compressor and resistance wire heating device are generally controlled to operate continuously at a high power. Although this can ensure rapid environmental changes in the high- and low-temperature test chamber, it consumes significantly more energy and cannot balance efficiency and energy consumption. Therefore, an energy-saving control system for high- and low-temperature test chambers is urgently needed. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes an energy-saving control system for a high and low temperature test chamber, which is used to solve the technical problem that in the prior art, it is difficult to achieve a balance between efficiency and energy consumption during the control process of the high and low temperature test chamber, resulting in high energy consumption of the high and low temperature test chamber.

[0005] To achieve the above-mentioned purpose, the first aspect of the present invention provides an energy-saving control system for a high and low temperature test chamber, which is applied to the high and low temperature test chamber and includes a central control module, and a data acquisition module and a parameter control module connected thereto; the central control module obtains the working simulation data of the high and low temperature test chamber, calculates and obtains the balance coefficient according to the environmental segments and energy consumption data corresponding to several power parameters in the working simulation data, and matches them with the environmental segments to obtain several balance association groups corresponding to the environmental segments; and compares the balance coefficients in several balance association groups to determine the power parameters and generate basic data for the curve; uses the environmental segment as the independent variable and the power parameter as the dependent variable to fit and establish a power control line; the central control module obtains real-time environmental parameters through a data sensor connected to the data acquisition module, and obtains the target power from the power control line based on the real-time environmental parameters; and adjusts the environment by controlling the functional modules in the high and low temperature test chamber according to the target power through the parameter control module.

[0006] Existing high and low temperature test chambers generally rely primarily on regulating their internal environment during operation, which allows them to quickly reach various environmental conditions, but also results in excessive energy waste. The present invention first simulates the operating process of the high and low temperature test chamber to obtain operational simulation data. Then, based on the operational simulation data, it analyzes the power output of the functional modules in various environmental segments to achieve the lowest energy consumption, thereby establishing a power control line. Finally, based on the real-time environmental parameters of the high and low temperature test chamber, the corresponding environmental segment is determined, and the corresponding functional module is then controlled by the power control line to output the appropriate power.

[0007] The environmental segments in this invention are determined based on environmental parameters. Environmental parameters include temperature, humidity, and so on. For example, if the operating temperature range of a high and low temperature test chamber is -20°C to 100°C, a temperature segment is generated every 5°C. The temperature segments obtained here are the temperature segments. The environmental segments in this invention include temperature segments or humidity segments. During the simulation process, the temperature needs to be simulated for heating, cooling, and heat preservation, while the humidity needs to be simulated for humidification, dehumidification, and moisturizing. The intervals between environmental segment divisions are determined based on experience.

[0008] The power parameter in the present invention is actually the output power of the functional module. For example, the compressor needs to work at a certain output power to achieve the cooling effect. The refrigeration unit, heating unit, etc. in the functional module can adjust the power output to control the environment in time, that is, the refrigeration unit, heating unit, etc. can work at different output powers.

[0009] Preferably, the central control module communicates and / or is electrically connected to the data acquisition module and the parameter control module respectively; the data acquisition module communicates and / or is electrically connected to the data sensor in the high and low temperature test chamber; wherein, the data sensor includes a temperature sensor or a humidity sensor; the parameter control module is used to control the functional modules in the high and low temperature test chamber to adjust the environment in the high and low temperature test chamber; wherein, the functional modules include a refrigeration unit, a heating unit, a humidification unit or a dehumidification unit.

[0010] The data acquisition module in the present invention is mainly connected to various data sensors in the high and low temperature test chamber, such as the temperature sensor for collecting the test environment temperature and the humidity sensor for collecting the test environment humidity. The data acquisition module collects relevant data in real time and sends it to the central control module, and will perform data preprocessing when necessary.

[0011] The parameter control module in this invention controls the functional modules based on the matched target power. Based on the analysis results, the parameter control module generates control instructions and sends them to each unit within the functional module. The cooling unit within the functional module is responsible for cooling the interior of the high- and low-temperature test chamber, the heating unit is responsible for heating the interior of the high- and low-temperature test chamber, and the humidification unit and dehumidification unit are responsible for humidifying and dehumidifying the interior of the high- and low-temperature test chamber, respectively. The specific composition of the functional modules can be referenced in existing high- and low-temperature test chambers.

[0012] Preferably, the central control module obtains the working simulation data of the high and low temperature test chamber, including: determining the environmental parameters, and dividing the environmental parameters into several environmental segments according to the simulation conditions; wherein the environmental parameters include temperature or humidity; obtaining several power parameters of the functional modules corresponding to the environmental parameters; simulating the energy consumption data corresponding to each power parameter of the high and low temperature test chamber in several environmental segments, and integrating them into working simulation data.

[0013] One of the foundations of the energy-saving control of the present invention is to obtain the working simulation data of the high and low temperature test chamber. The simulation of the high and low temperature test chamber can be a quantitative simulation, that is, only one of the environmental parameters is simulated, such as keeping the humidity unchanged first, and simulating the energy consumption data corresponding to several power parameters in different temperature segments. Of course, it is also possible to consider the various factors in the environmental parameters at the same time for simulation, to obtain temperature segments and humidity segments, and to freely combine the temperature segments and humidity segments to obtain environmental segments. When simulating the work of two functional units at the same time, when performing actual adjustments later, the actual environmental parameters considered include both temperature and humidity. The power parameter in the present invention is the output power of the functional module when it is working, and each functional module has multiple output powers. The working simulation data is the energy consumption data corresponding to each output power in a certain environmental segment.

[0014] Preferably, the balance coefficient is calculated based on the environmental segments and energy consumption data corresponding to several power parameters in the working simulation data, including: marking the environmental segment as i, marking the power parameter as j, and marking the energy consumption data of the power parameter j in the environmental segment i as NSij; wherein i=1, 2,…, n, j=1, 2,…, m, and m and n are both positive integers; calculating the balance coefficient PXij by the formula PXij=α×exp(NSij); wherein α is a proportional coefficient greater than 0, and NSij is greater than 0.

[0015] In the present invention, the energy consumption data in the operational simulation data corresponds to at least one environmental segment and one power parameter. For subsequent data identification, the environmental segment, power parameter, and energy consumption data are all labeled, and a balance coefficient is calculated using a balance coefficient calculation formula. The balance coefficient expresses the energy consumption corresponding to each power parameter operating in a specific environmental segment. The balance coefficient calculation formula is optimized using a proportional coefficient; generally, larger energy consumption data corresponds to a larger balance coefficient.

[0016] Preferably, the matching with the environmental segment to obtain several balance association groups corresponding to the environmental segment includes: identifying the environmental segment and power parameter corresponding to the balance coefficient, and establishing an association relationship between the three; taking the environmental segment as a benchmark, extracting the mutually related power parameters and balance coefficients based on the association relationship as a balance association group, and obtaining several balance association groups corresponding to the environmental segment.

[0017] In the present invention, the balance association group specifically includes power parameters and balance coefficients. When the environment segment and power parameters are determined, the power parameter is unique. During the simulation process, each environment segment corresponds to multiple power parameters and multiple balance coefficients, that is, each environment segment corresponds to multiple balance association groups.

[0018] Preferably, the comparing of the balance coefficients in several balance association groups, determining the power parameters and generating basic data of the curve includes: extracting several balance association groups corresponding to the environmental segments; comparing the balance coefficients in several balance association groups, selecting the power parameter corresponding to the maximum balance coefficient as the first power; and selecting the power parameter whose balance coefficient is second only to the maximum balance coefficient as the second power; integrating the environmental segments with the first power and the second power to generate basic data of the curve.

[0019] In the present invention, each environmental segment corresponds to several balance association groups, each of which contains a power parameter. When the environmental segment is determined, the power parameter in the balance association group with the largest balance coefficient is selected as the first power. This first power is the preferred choice for constructing the power control line. However, to avoid unreasonable sudden changes in the power parameters of adjacent environmental segments in the power control line, the power parameters in the corresponding balance association group can be selected as the second power based on the balance coefficient. When unreasonable sudden changes occur, the second power can be used to attempt a fit. Of course, a third power can also be obtained when necessary.

[0020] Preferably, the method of fitting and establishing a power control line with the environmental segment as the independent variable and the power parameter as the dependent variable includes: sorting the basic data of the curve according to the environmental segment, and then extracting the first power in the basic data of each curve; fitting and obtaining the power control line with the environmental segment as the independent variable and the first power as the dependent variable; checking whether the first power mutation of the adjacent environmental segment in the power control line is reasonable; if so, optimizing the power control line; if not, adjusting the power control line according to the second power corresponding to the environmental segment or the adjacent environmental segment.

[0021] After obtaining the basic data of the curve, the present invention uses the environmental segment as the independent variable and the power parameter corresponding to the environmental segment as the dependent variable to obtain the power control line through fitting. It is understood that during the fitting process, to ensure the smoothness of the power control line, the environmental value at the midpoint of the environmental segment can be used as the independent variable. This can improve the smoothness of the fitting and reduce power abrupt changes between adjacent environmental segments. Of course, several environmental values within the environmental segment can also be selected as independent variables.

[0022] When fitting to obtain a power control line, the present invention prioritizes the first power of each environmental segment. When an unreasonable power change occurs between a certain environmental segment and an adjacent environmental segment in the power control line, the second power of that environmental segment is used for refitting. For example, if environmental segment B has environmental segment A on its left and environmental segment C on its right, and the power parameter changes from environmental segment A to environmental segment B to environmental segment C in the power control line are sudden increases and decreases, with the magnitude of the increases and decreases being relatively small, then refitting is performed using the second power of environmental segment B.

[0023] Preferably, the matching and obtaining of target power from the power control line based on real-time environmental parameters includes: collecting real-time environmental parameters in the high and low temperature test chamber through data sensors; bringing the real-time environmental parameters into the corresponding power control line in combination with the test process information to obtain the target power; wherein the test process information includes the control targets of the environmental parameters in the high and low temperature test chamber.

[0024] After obtaining the power control line, the present invention can obtain the real-time environmental parameters in the high and low temperature test chamber, determine the environmental segment according to the real-time environmental parameters, calculate the corresponding power parameters from the power control line according to the determined environmental segment, and the functional module controls the corresponding unit according to the power parameters to realize the adjustment of the internal environment of the high and low temperature test chamber.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention obtains operating simulation data of a high- and low-temperature test chamber, calculates a balance coefficient based on the environmental segments and energy consumption data corresponding to several power parameters in the operating simulation data, and establishes a power control line based on the balance coefficient and environmental segment data. The present invention obtains the optimal power output for each environmental segment through simulation, and the power control line can ensure that the high- and low-temperature test chamber can achieve a balance between efficiency and energy consumption.

[0027] 2. The present invention compares the balance coefficients in several balance association groups, selects the power parameter corresponding to the maximum balance coefficient as the first power; and selects the power parameter with a balance coefficient second only to the maximum balance coefficient as the second power; after comparing the balance coefficients of each environmental segment, the present invention selects a backup power parameter, so that the subsequent power control line can reduce equipment load and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only 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.

[0029] Figure 1 Schematic diagram of the system principle of the present invention;

[0030] Figure 2 It is a schematic diagram of the working steps of the present invention;

[0031] Figure 3 This is a schematic diagram of the power control curve of the present invention. Figure 1 ;

[0032] Figure 4 This is a schematic diagram of the power control curve of the present invention. Figure 2 . DETAILED DESCRIPTION

[0033] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figures 1 to 2 The first embodiment of the present invention provides an energy-saving control system for a high and low temperature test chamber, which is applied to the high and low temperature test chamber and includes a central control module, and a data acquisition module and a parameter control module connected thereto; the central control module obtains the working simulation data of the high and low temperature test chamber, calculates and obtains the balance coefficient according to the environmental segments and energy consumption data corresponding to several power parameters in the working simulation data, and matches them with the environmental segments to obtain several balance association groups corresponding to the environmental segments; and compares the balance coefficients in the several balance association groups to determine the power parameters and generate basic data for the curve; takes the environmental segment as the independent variable and the power parameter as the dependent variable to fit and establish a power control line; the central control module obtains real-time environmental parameters through a data sensor connected to the data acquisition module, and obtains the target power from the power control line based on the real-time environmental parameters; and adjusts the environment by controlling the functional modules in the high and low temperature test chamber according to the target power through the parameter control module.

[0035] This embodiment takes the temperature control in a high and low temperature test chamber as an example.

[0036] The first step in this embodiment is to simulate temperature regulation within the high and low temperature test chamber and obtain operational simulation data. The environmental parameter is determined to be temperature, and the environmental parameter is divided into several environmental segments based on the simulation conditions. Several power parameters of the functional modules corresponding to the environmental parameters are obtained. The energy consumption data corresponding to each power parameter in the high and low temperature test chamber in the several environmental segments is simulated and integrated into the operational simulation data.

[0037] The simulation conditions in this embodiment mainly consider the data accuracy that can be achieved under the simulation state. Of course, the division of environmental segments can also be based on experience, and the environmental segments are not required to be completely equal.

[0038] The following simulation uses temperature as an example. For example, the operating temperature range of a high- and low-temperature test chamber is -20°C to 100°C. If the temperature rise process is simulated in 10°C increments, the resulting temperature segments are [-20°C, -10°C], [-10°C, 0°C], …, [95°C, 100°C]. Assume that the power parameters of the heating unit include Power 1, Power 2, and Power 3. Next, when the power output is Power 1, the energy consumption data for temperatures rising from -20°C to -10°C, then from -10°C to 0°C, … are simulated. When the power output is Power 2, the energy consumption data for temperatures rising from -20°C to -10°C, then from -10°C to 0°C, … are simulated. When the power output is Power 3, the energy consumption data for temperatures rising from -20°C to -10°C, then from -10°C to 0°C, … are simulated. By integrating the corresponding environmental segments, power parameters, and energy consumption data, the operating simulation data is obtained.

[0039] The second step of this embodiment is to calculate the balance coefficient based on the working simulation data. Label the environmental segment i, the power parameter j, and the energy consumption data of power parameter j in environmental segment i as NSij. The balance coefficient PXij is calculated using the formula PXij = α × exp(NSij).

[0040] Specifically, the environmental segment [-20°C, -10°C] is marked as i=1, power parameter 1 is marked as j=1, and the corresponding energy consumption data is NC11. Assuming the value of α is 1, exp() is an exponential function with the natural number e as the base, and the balance coefficient calculation formula can be used to calculate the balance coefficient PX11. This allows calculation of multiple balance coefficients corresponding to the same environmental segment.

[0041] The third step of this embodiment is to obtain several balance association groups and determine the basic curve data based on the balance association groups. Using the environmental segment as a benchmark, the interrelated power parameters and balance coefficients are extracted based on the correlation relationship to form a balance association group. Several balance association groups corresponding to the environmental segments are then obtained. The balance coefficients within the balance association groups are compared, and the power parameter corresponding to the maximum balance coefficient is selected as the first power. The power parameter with the balance coefficient less than the maximum balance coefficient is selected as the second power. The environmental segment is then integrated with the first and second powers to generate the basic curve data.

[0042] The [NC11, PX11] in the previous step is one of the balance association groups for environment segment 1. The same environment segment corresponds to multiple power parameters and, therefore, multiple balance association groups. The balance association groups corresponding to the environment segment are determined. The power parameter corresponding to the largest balance coefficient in these balance association groups is selected as the first power, the power parameter corresponding to the second largest balance coefficient as the second power, the power parameter corresponding to the third largest balance coefficient as the third power, and so on. The environment segment is integrated with the first, second, and third powers to form part of the curve's base data. After all environment segments are integrated, the curve's base data is formed.

[0043] The fourth step of this embodiment is to obtain a power control line through fitting. The method of fitting and establishing a power control line using the environmental segment as the independent variable and the power parameter as the dependent variable includes: sorting the basic curve data by environmental segment, then extracting the first power from each curve basic data; obtaining a power control line through fitting using the environmental segment as the independent variable and the first power as the dependent variable; checking whether the first power mutation of adjacent environmental segments in the power control line is reasonable; if so, optimizing the power control line; if not, adjusting the power control line based on the second power corresponding to the environmental segment or an adjacent environmental segment.

[0044] The power control line in this embodiment can be a continuous curve or a continuous broken line. If necessary, the power parameters between adjacent environmental segments may not be connected. When an environmental segment is used as an independent variable, it can be simplified, such as by replacing it with its label i. Alternatively, the midpoint of the environmental segment can be selected as a replacement, for example, the environmental segment [-20°C, -10°C] can be replaced with 0°C.

[0045] See also Figure 3 , schematic diagram of the power control line of this embodiment Figure 1 When the power parameters corresponding to the environmental segment are constant, the power control line is as follows: Figure 3 As shown in the figure, when the temperature increases from low to high, the heating unit only needs to output appropriate power parameters in the appropriate environmental range to achieve a balance between efficiency and energy consumption.

[0046] See also Figure 4 , schematic diagram of the power control line of this embodiment Figure 2 .exist Figure 4 In the figure, the horizontal solid lines corresponding to environmental segments 1, 2, and 3 are their first powers. Under normal circumstances, when moving from environmental segment 1 to environmental segment 3, the power parameters are first increased and then decreased according to the power control curve. The process of increasing the power parameters will increase the equipment burden and energy consumption. Therefore, the first power in environmental segment 2 can be replaced with the second power, as shown in the following example. Figure 4 The horizontal dotted line corresponding to the middle environment segment 2.

[0047] Some of the data in the above formula are calculated by removing the dimensions and taking their numerical values. The formula is a formula that is closest to the actual situation obtained by software simulation of a large amount of collected data; the preset parameters and preset thresholds in the formula are set by technical personnel in this field according to actual conditions or obtained through simulation of a large amount of data.

[0048] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. An energy-saving control system for a high and low temperature test chamber, applied to the high and low temperature test chamber, comprising a central control module, a data acquisition module and a parameter control module connected thereto; characterized in that: The central control module obtains the working simulation data of the high and low temperature test chamber, calculates and obtains the balance coefficient according to the environmental segments and energy consumption data corresponding to several power parameters in the working simulation data, matches it with the environmental segments, and obtains several balance association groups corresponding to the environmental segments; and Compare the balance coefficients in several balance association groups, determine the power parameters and generate basic curve data; use the environmental segment as the independent variable and the power parameter as the dependent variable to fit and establish the power control line; The central control module obtains real-time environmental parameters through the data sensor connected to the data acquisition module, and obtains the target power from the power control line based on the real-time environmental parameters; and adjusts the environment by controlling the functional modules in the high and low temperature test chamber according to the target power through the parameter control module; The central control module obtains the working simulation data of the high and low temperature test chamber, including: Determine environmental parameters and divide the environmental parameters into several environmental segments according to simulation conditions; wherein the environmental parameters include temperature or humidity; Obtain several power parameters of the functional modules corresponding to the environmental parameters; simulate the energy consumption data corresponding to each power parameter in several environmental sections of the high and low temperature test chamber and integrate them into working simulation data; The calculation and acquisition of the balance coefficient according to the environmental segments and energy consumption data corresponding to the power parameters in the working simulation data includes: The environmental segment is marked as i, the power parameter is marked as j, and the energy consumption data of power parameter j in environmental segment i is marked as NSij; where i = 1, 2, ..., n, j = 1, 2, ..., m, and m and n are both positive integers; The balance coefficient PXij is calculated by the formula PXij=α×exp(NSij); wherein α is a proportional coefficient greater than 0, and NSij is greater than 0.

2. The energy-saving control system of a high and low temperature test chamber according to claim 1, characterized in that: The central control module communicates and / or is electrically connected to the data acquisition module and the parameter control module respectively; the data acquisition module communicates and / or is electrically connected to the data sensor in the high and low temperature test chamber; wherein the data sensor includes a temperature sensor or a humidity sensor; The parameter control module is used to control the functional modules in the high and low temperature test chamber to adjust the environment in the high and low temperature test chamber; wherein the functional modules include a refrigeration unit, a heating unit, a humidification unit or a dehumidification unit.

3. The energy-saving control system of a high and low temperature test chamber according to claim 1, characterized in that: The matching with the environment segment to obtain several balance association groups corresponding to the environment segment includes: Identify the environmental segment and power parameters corresponding to the balance coefficient and establish the correlation between the three; Taking the environmental segment as a benchmark, mutually related power parameters and balance coefficients are extracted based on the correlation relationship as a balance association group, and a number of balance association groups corresponding to the environmental segment are obtained.

4. The energy-saving control system of a high and low temperature test chamber according to claim 1, characterized in that: The comparing the balance coefficients in the plurality of balance association groups, determining the power parameters and generating basic curve data includes: Extract several equilibrium association groups corresponding to the environmental segments; Comparing the balance coefficients in the plurality of balance association groups, selecting a power parameter corresponding to the maximum balance coefficient as a first power; and selecting a power parameter having a balance coefficient second to the maximum balance coefficient as a second power; The environmental segment is integrated with the first power and the second power to generate curve basic data.

5. The energy-saving control system of a high and low temperature test chamber according to claim 4, characterized in that: The method of fitting and establishing a power control line with the environment segment as the independent variable and the power parameter as the dependent variable includes: Sort the basic data of the curve according to the environmental segment, and then extract the first power in the basic data of each curve; use the environmental segment as the independent variable and the first power as the dependent variable to fit and obtain the power control line; Check whether the first power mutation of the adjacent environmental segment in the power control line is reasonable; if so, optimize the power control line; if not, adjust the power control line according to the second power corresponding to the environmental segment or the adjacent environmental segment.

6. The energy-saving control system of a high and low temperature test chamber according to claim 1, characterized in that: The step of matching and obtaining the target power from the power control line based on the real-time environmental parameters includes: Collect real-time environmental parameters in the high and low temperature test chamber through data sensors; The real-time environmental parameters are brought into the corresponding power control line in combination with the test process information to obtain the target power; wherein the test process information includes the control target of the environmental parameters in the high and low temperature test chamber.

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