CN117781506A - Control method and device of Peltier refrigerating system and electronic equipment - Google Patents
Control method and device of Peltier refrigerating system and electronic equipment Download PDFInfo
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Abstract
The invention provides a control method, a control device and electronic equipment of a peltier refrigerating system, wherein the peltier refrigerating system comprises a plurality of peltier refrigerating modules connected in parallel and a detection circuit for detecting total current of the peltier refrigerating modules, each peltier refrigerating module is provided with a branch circuit, and the method comprises the following steps: starting from an initial module of the peltier refrigerating modules, determining a target temperature and an actual temperature of a cooling object in sequence, and determining an opening value based on the target temperature and the actual temperature; determining a target Peltier refrigeration module which is turned on or turned off based on the opening value, and detecting the total circuit current in the process of turning on or turning off the target Peltier refrigeration module through a detection circuit; sequentially determining whether a branch circuit where a target Peltier refrigeration module is located is abnormal or not based on the total current of the circuits; if abnormal, executing alarm operation; if no abnormality exists, the initial module is updated. The service life of the Peltier refrigeration module can be prolonged, the abnormal module can be rapidly and accurately identified, and the after-sale inquiry problem is facilitated.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a control method and device of a Peltier refrigeration system and electronic equipment.
Background
Peltier refrigeration is commonly used for low temperature storage of reagents in medical devices, typically based on PID (Proportion Integral Differential, proportional, integral, derivative) control, adjusting PWM (Pulse width modulation ) pulse width, controlling the input current to the refrigeration module, and thus controlling the temperature of the reagents.
However, the PWM control method has high temperature control accuracy, but when the number of the controlled modules is too large and the power of a single module is too large, the PWM control method can cause frequent on-off of a plurality of modules at the same time, so that excessive current impact is caused to a circuit, and the service life of the refrigerating module of the whole system is affected.
Disclosure of Invention
Accordingly, the invention aims to provide a control method, a control device and electronic equipment for a peltier refrigerating system, which can not only improve the service life of the peltier refrigerating module, but also rapidly and accurately identify an abnormal module, thereby facilitating the after-sales inquiry problem.
In a first aspect, an embodiment of the present invention provides a control method of a peltier refrigerating system, where the peltier refrigerating system includes a plurality of peltier refrigerating modules connected in parallel and a detection circuit for detecting total current of the plurality of peltier refrigerating modules, each peltier refrigerating module is provided with a bypass circuit, and the method includes: starting from an initial module of the peltier refrigerating modules, determining a target temperature and an actual temperature of a cooling object in sequence, and determining an opening value based on the target temperature and the actual temperature; determining a target Peltier refrigeration module which is turned on or turned off based on the opening value, and detecting the total circuit current in the process of turning on or turning off the target Peltier refrigeration module through a detection circuit; sequentially determining whether a branch circuit where a target Peltier refrigeration module is located is abnormal or not based on the total current of the circuits; if abnormal, executing alarm operation; if no abnormality exists, the initial module is updated.
In an alternative embodiment of the present application, the working time T starts to be counted after the start module is turned on.
In an optional embodiment of the present application, the step of updating the start module includes: comparing the working time with a preset delay time threshold; if the working time is more than or equal to the preset delay time threshold, updating the starting module and setting the working time T to be 0, and re-timing after finishing updating; if the working time is less than the preset delay time threshold, the comparison step is still performed.
In an optional embodiment of the present application, the start module is any one of a plurality of peltier refrigeration modules, and the start module is determined based on a preset flag bit; the step of determining the opening or closing target peltier refrigeration module based on the opening value from the starting module comprises: determining the relation between the opening value and a plurality of preset opening values, wherein the plurality of preset opening values sequentially form a plurality of sections from small to large, and the number of the sections is 1 larger than that of the Peltier refrigeration modules; and if the opening value belongs to the ith of the multiple sections, controlling the first i-1 target peltier refrigerating modules to be started and controlling the peltier refrigerating modules except the target peltier refrigerating modules to be closed.
In an optional embodiment of the present application, the step of detecting, by the detection circuit, the total circuit current in the process of opening or closing the target peltier refrigeration module includes: if the opening value is based on the fact that the opened target peltier refrigerating module is the ith target peltier refrigerating module, controlling to close the ith target peltier refrigerating module, and detecting the total current L1 of the circuit through a detection circuit; and then controlling to start the I target Peltier refrigeration module, and detecting the total current L2 of the circuit through the detection circuit.
In an optional embodiment of the present application, the step of sequentially determining, based on the total circuit current, whether the branch circuit where the target peltier refrigeration module is located is abnormal includes: judging whether L2-L1 is more than or equal to a preset threshold L; if L2-L1 is more than or equal to L, determining that the branch circuit is normal; if L2-L1 < L, determining that the branch circuit is abnormal.
In an optional embodiment of the present application, the step of detecting, by the detection circuit, the total circuit current in the process of opening or closing the target peltier refrigeration module includes: if the closed target peltier refrigerating module is determined to be the Mth target peltier refrigerating module based on the opening value, controlling to start the Mth target peltier refrigerating module, and detecting the total current L3 of the circuit through a detection circuit; and then controlling to close the Mth target Peltier refrigeration module, and detecting the total current L4 of the circuit through a detection circuit.
In an optional embodiment of the present application, the step of sequentially determining, based on the total circuit current, whether the branch circuit where the target peltier refrigeration module is located is abnormal includes: judging whether L3-L4 is more than or equal to a preset threshold L; if L3-L4 is more than or equal to L, determining that the branch circuit is normal; if L3-L4 < L, determining that the branch circuit is abnormal.
In a second aspect, an embodiment of the present invention further provides a control device for a peltier refrigeration system, where the peltier refrigeration system includes a plurality of peltier refrigeration modules connected in parallel and a detection circuit for detecting total current of the plurality of peltier refrigeration modules, and each peltier refrigeration module is provided with a bypass circuit; the device comprises: the opening value determining module is used for sequentially determining the target temperature and the actual temperature of the cooling object from the initial modules of the peltier refrigerating modules and determining an opening value based on the target temperature and the actual temperature; the circuit total current detection module is used for determining an opening or closing target peltier refrigerating module based on the opening value, and detecting the circuit total current of the target peltier refrigerating module in the opening or closing process through the detection circuit; the running state detection module is used for sequentially determining whether a branch circuit where the target Peltier refrigeration module is located is abnormal or not based on the total current of the circuit; if abnormal, executing alarm operation; the initial module updating module is used for updating the initial module if no abnormality exists.
In a third aspect, an embodiment of the present invention further provides an electronic device, including a processor and a memory, where the memory stores computer executable instructions that can be executed by the processor, and the processor executes the computer executable instructions to implement the method for controlling a peltier refrigerating system.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a control method, a control device and electronic equipment of a Peltier refrigerating system, which are used for judging whether each module needs to be switched or not according to an opening value from an initial module, wherein the control mode can reduce current impact on the whole circuit. And after a period of time, the initial module is updated, so that the same module is prevented from being used for a long time, the aging of a certain module is accelerated, the service life of the module of the whole system cannot reach theoretical consistency, and the service life of the module is prolonged. In the judging process of each module switch, the total current variation of the circuit before and after each module switch is compared with a preset value to judge whether the corresponding module circuit is abnormal or not, so that the abnormal module is rapidly and accurately identified, and the after-sale inquiry problem is facilitated.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part will be obvious from the description, or may be learned by practice of the techniques of the disclosure.
The foregoing objects, features and advantages of the disclosure will be more readily apparent from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a control method of a peltier refrigeration system according to an embodiment of the present invention;
fig. 2 is a schematic system control diagram of a control method of a peltier refrigeration system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a detection principle of a control method of a peltier refrigerating system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a control method of a 5 peltier refrigeration system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a control device of a peltier refrigeration module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
At present, peltier refrigeration is commonly used for low-temperature storage of reagents in medical equipment, and is usually based on PID control, PWM pulse width is adjusted, the magnitude of input current of a refrigeration module is controlled, and then reagent temperature is controlled and adjusted. However, the PWM control method has high temperature control accuracy, but when the number of the controlled modules is too large and the power of a single module is too large, the PWM control method can cause frequent on-off of a plurality of modules at the same time, so that excessive current impact is caused to a circuit, and the service life of the refrigerating module of the whole system is affected.
Based on the above, the control method, the device and the electronic equipment of the peltier refrigerating system provided by the embodiment of the invention particularly provide a temperature control and running state detection method of the peltier refrigerating system, which not only can meet the requirements of different refrigerating capacities, but also can improve the service life of the refrigerating module; even if the module has problems, the abnormal module can be rapidly and accurately positioned, so that after-sales inquiry is facilitated.
For the sake of understanding the present embodiment, first, a control method of a peltier refrigeration system disclosed in the present embodiment is described in detail.
Embodiment one:
the embodiment of the invention provides a control method of a Peltier refrigerating system, wherein Peltier is a thermoelectric semiconductor refrigerating device, and the principle is as follows: after the power is turned on, the heat at the cold end is moved to the hot end, resulting in a decrease in the cold end temperature and an increase in the hot end temperature. In this embodiment, the peltier cooling module may be simply referred to as a module, and will not be described herein.
The peltier refrigerating system in this embodiment includes a plurality of peltier refrigerating modules connected in parallel and a detecting circuit for detecting total current of the plurality of peltier refrigerating modules, and each peltier refrigerating module is provided with a bypass circuit.
Based on the above description, referring to a flowchart of a control method of a peltier refrigeration system shown in fig. 1, the control method of the peltier refrigeration system includes the following steps:
step S102, starting from a starting module of the peltier refrigerating modules, determining a target temperature and an actual temperature of the cooling object in sequence, and determining an opening value based on the target temperature and the actual temperature.
Referring to a system control schematic diagram of a control method of a peltier refrigerating system shown in fig. 2, the overall control frame compares a target temperature with an actual temperature of a cooling object, and performs PID adjustment calculation to obtain an opening value of an opening of a control module.
The opening value D is calculated as follows: d=kp+ki+se+kd+de
Wherein e=t1-T2, representing the error of the target temperature and the actual temperature;
se=e+se, representing the accumulated error;
de=e-de, representing the error variation value;
kp is a proportional adjustment coefficient, ki is an integral adjustment coefficient, and Kd is a parameter differential adjustment coefficient.
Step S104, determining an opening or closing target Peltier refrigeration module based on the opening value, and detecting the total circuit current in the opening or closing process of the target Peltier refrigeration module through a detection circuit.
As shown in fig. 2, after the opening value is obtained, the switch of each module can be controlled according to the opening value, so as to achieve the purposes of meeting different refrigerating capacity requirements and prolonging the service life of the module. The target peltier refrigerating module can be determined according to the opening value, and then the total circuit current in the opening or closing process of the target peltier refrigerating module is detected through the detection circuit.
Step S106, determining whether a branch circuit where the target Peltier refrigeration module is located is abnormal or not sequentially based on the total current of the circuits; if abnormal, executing alarm operation; if no abnormality exists, the initial module is updated.
In addition, in this embodiment, the current change of the branch circuit can be detected during the switching process of the module, so as to determine whether the module circuit is abnormal. The detection principle is that a plurality of Peltier refrigeration modules are connected in parallel, each Peltier refrigeration module corresponds to a switch (such as a field effect tube), and a current detection circuit is arranged on the cathode of the whole power line.
For example, the peltier cooling modules are arranged in parallel in a circuit, each parallel branch of the circuit is provided with a switch, and the current detection circuit is arranged on the negative electrode of the power line of the circuit.
Referring to a schematic diagram of a detection principle of a control method of a peltier refrigerating system shown in fig. 3, 5 peltier refrigerating modules are shown in fig. 3, and a detection circuit can implement switching of any module and detect current changes of circuits before and after the switching.
Therefore, in the present embodiment, in the target peltier refrigeration module switch judging process, circuit total current detection is added, and the total current variation of the circuit before and after the target peltier refrigeration module switch is compared with a preset threshold value to judge whether the corresponding module circuit is abnormal.
In addition, the initial module in the embodiment can be updated over time, and if the branch circuit where the target peltier refrigeration module is located is not abnormal, the initial module can be updated. For example: when the time of the initial module reaches the preset delay time threshold, the initial module can be updated.
The embodiment of the invention provides a control method of a Peltier refrigerating system, which comprises the steps of starting from an initial module, judging whether each module needs to be switched or not according to an opening value, wherein the control mode can reduce current impact on the whole circuit. And after a period of time, the initial module is updated, so that the same module is prevented from being used for a long time, the aging of a certain module is accelerated, the service life of the module of the whole system cannot reach theoretical consistency, and the service life of the module is prolonged. In the judging process of each module switch, the total current variation of the circuit before and after each module switch is compared with a preset value to judge whether the corresponding module circuit is abnormal or not, so that the abnormal module is rapidly and accurately identified, and the after-sale inquiry problem is facilitated.
Embodiment two:
the present embodiment provides another control method of a peltier refrigerating system, and the method is implemented on the basis of the foregoing embodiment, and may be referred to as a schematic diagram of a control method of 5 peltier refrigerating systems shown in fig. 4.
As shown in fig. 4, some flag bits are defined in this embodiment:
module group mark I: representing a module I, as shown in FIG. 4, wherein 1.ltoreq.I.ltoreq.5; i=1, representing the first module; i=2, representing the second module, and so on.
Counting mark K: the number of circulation times in a control period is represented as K which is more than or equal to 1 and less than or equal to 5; when K exceeds 5, 5 modules all pass through the control switch program to complete one period, and the second period control is started. At the start of the second cycle control, k=1.
Polling flag J: setting I=J, wherein the initial module is the J-th module, and controlling one period from the J-th module, wherein J is more than or equal to 1 and less than or equal to 5; for example, j=2, which indicates that a certain control period starts from the module 2, and whether or not to switch control is sequentially determined. The judging sequence is module 2, module 3, module 4, module 5 and module 1, and one period is completed.
Operating time T: the polling interval time can be updated after reaching the delay time threshold.
As shown in fig. 4, n=5 in fig. 4, the method provided in this embodiment includes the following steps:
step 1: initial values k=0, j=1, i=0, t=0.
Step 2: the delay time T starts to count.
In some embodiments, the working time T may be counted after the start module is turned on.
Step 3: k=k+1, i=i+1.
That is, the start module is module 1, and one cycle of control is started from module 1.
Step 4: judging whether K is less than or equal to 5.
Step 4.1: if so, step 7 is entered.
Step 4.2: if not, the current control period is completely executed, and the next control period is about to start, K=1, and whether the working time T is more than or equal to T0 is judged; t0 belongs to a preset value.
In some embodiments, the on time may be compared to a preset latency threshold; if the working time is more than or equal to the preset delay time threshold, updating the starting module and setting the working time T to be 0, and re-timing after finishing updating; if the working time is less than the preset delay time threshold, the comparison step is still performed. Namely the following steps 4.2.1, 4.2.2 and 5:
step 4.2.1: if so, the process proceeds to step 5, which represents the need to update the start module of the control period.
Step 4.2.2: if not, the step 7 is entered without updating the start module.
Step 5: j=j+1, i=j, working time T zero, re-timing; and using the next module as a starting module, and updating the starting module.
In some embodiments, the starting module is any one of a plurality of peltier refrigeration modules, and the starting module is determined based on a preset flag bit. Starting from the initial module, determining the relation between the opening value and a plurality of preset opening values, wherein the plurality of preset opening values sequentially form a plurality of sections from small to large, and the number of the sections is 1 larger than that of the Peltier refrigeration modules; and if the opening value belongs to the ith of the multiple sections, controlling the first i-1 target peltier refrigerating modules to be started and controlling the peltier refrigerating modules except the target peltier refrigerating modules to be closed.
In this embodiment, the number of the switches of the modules may be obtained by looking up an opening value control table, for example, 5 modules, corresponding to six opening intervals, and the opening values from interval one to interval five are sequentially increased. The following examples are all illustrated with 5 modules:
taking the opening value reference value as m, and closing all modules when the opening value D is smaller than m, wherein the corresponding interval I; when m is less than or equal to D and less than 2*m, one of the modules is opened, and a corresponding interval II is formed; when 2*m is less than or equal to D and less than 3*m, two modules are opened, and the corresponding interval is three; when D is smaller than 4*m and 3*m, opening three modules in the four modules, wherein the interval is four; when 4*m is less than or equal to D and less than 5*m, four modules are opened, and the corresponding interval is five; when 5*m is less than or equal to D, five modules are opened, and the corresponding interval is six.
Therefore, in this embodiment, taking 5 modules as an example, six opening intervals are corresponding, the opening value reference value is m, and m, 2m, 3m, 4m, 5m are interval boundaries, and the numbers of the opened modules are respectively corresponding to 0, 1, 2, 3, 4, 5. In one control period, starting from the initial module, judging whether each module needs to be switched according to the opening value, and after a period of time, updating the initial module to start a new control period.
Step 6: judging whether J is less than or equal to 5.
Step 6.1: if so, step 7 is entered.
Step 6.2: if not, the representative 5 modules are updated as the initial module, and need to be updated again, j=0, and the step 5 is returned.
Step 7: judging whether I is less than or equal to 5.
Step 7.1: if so, step 8 is entered.
Step 7.2: if not, i=1, and step 8 is performed if the 5 modules are all subjected to the switching control and the switching control needs to be performed again from the module 1.
Step 8: calculating an opening value D; and comparing the target temperature with the actual temperature of the cooling object, and performing PID (proportion integration differentiation) calculation to obtain an opening value D.
Step 9: and judging whether the opening value D is more than or equal to I multiplied by m is true or not.
Step 9.1: if so, the step 10 is entered on behalf of the need to open the module I.
Step 9.2: if not, it means that the module I needs to be turned off, and step 11 is entered.
In some embodiments, if the opening value is based on that the target peltier refrigeration module which is started is the ith target peltier refrigeration module, controlling to close the ith target peltier refrigeration module, and detecting the total circuit current L1 through the detection circuit; and then controlling to start the I target Peltier refrigeration module, and detecting the total current L2 of the circuit through the detection circuit. Namely the following step 10:
in some embodiments, it may be determined whether L2-L1 is greater than or equal to a preset threshold L; if L2-L1 is more than or equal to L, determining that the branch circuit is normal; if L2-L1 < L, determining that the branch circuit is abnormal. Namely the following steps 10, 10.1 and 10.2:
step 10: firstly, closing a module I, and obtaining a total circuit current L1 before opening the module I; then the module I is opened, and the total circuit current L2 after the module I is opened is obtained; judging whether L2-L1 is more than or equal to L; l is a preset threshold.
Step 10.1: if yes, the branch of the representing module I is normal, and the step 3 is returned.
Step 10.2: if not, the branch of the representative module I is abnormal, and the alarm is given.
In some embodiments, if the closed target peltier refrigeration module is determined to be the mth based on the opening value, controlling to open the mth target peltier refrigeration module, and detecting the total circuit current L3 through the detection circuit; and then controlling to close the Mth target Peltier refrigeration module, and detecting the total current L4 of the circuit through a detection circuit. Namely the following step 11:
in some embodiments, it may be determined whether L3-L4 is greater than or equal to a preset threshold L; if L3-L4 is more than or equal to L, determining that the branch circuit is normal; if L3-L4 < L, determining that the branch circuit is abnormal. Namely, the following steps 11, 11.1 and 11.2:
step 11.1: firstly, a module I is opened, and the total circuit current L3 before the module I is closed is obtained; closing the module I to obtain the total circuit current L4 after closing the module I; judging whether L3-L4 is more than or equal to L; l is a preset threshold.
Step 11.1: if yes, the branch of the representing module I is normal, and the step 3 is returned.
Step 11.2: if not, the branch of the representative module I is abnormal, and the alarm is given.
According to the method provided by the embodiment of the invention, the target temperature is compared with the actual temperature of the cooling object, PID regulation calculation is carried out, and the opening value of the opening of the control module is obtained; according to the opening value, the switch of each module is controlled, so as to achieve the purposes of meeting different refrigerating capacity requirements and prolonging the service life of the module. Each module is connected in parallel, each parallel branch is provided with a switch MOS tube, and the current detection circuit is arranged on the negative electrode of the whole power line. Detecting the total current variation of the circuit in the module switching process, and judging whether the module circuit is abnormal.
The method provided by the embodiment of the invention has the following advantages:
(1) The service life of the module is prolonged: starting from the initial module, judging whether each module needs to be switched according to the opening value, wherein the control mode can reduce the current impact on the whole circuit. After a period of time, the initial module is updated, so that the same module is prevented from being used for a long time, the aging of a certain module is accelerated, and the service life of the module of the whole system cannot reach theoretical consistency.
(2) Quick accurate discernment unusual module, convenient inquiry problem after sale: in the judging process of each module switch, the total current variation of the circuits before and after each module switch is compared with a preset threshold value, and whether the corresponding module branch circuit is abnormal is judged.
Embodiment III:
corresponding to the above method embodiment, the embodiment of the present invention provides a control device for peltier refrigeration modules, where a peltier refrigeration system includes a plurality of peltier refrigeration modules connected in parallel and a detection circuit for detecting total current of the plurality of peltier refrigeration modules, each peltier refrigeration module is provided with a bypass circuit, see a schematic structural diagram of a control device for a peltier refrigeration module shown in fig. 5, and the control device for a peltier refrigeration module includes:
an opening value determining module 51, configured to sequentially determine a target temperature and an actual temperature of the cooling object from a start module of the peltier cooling modules, and determine an opening value based on the target temperature and the actual temperature;
the circuit total current detection module 52 is configured to determine an on or off target peltier refrigeration module based on the opening value, and detect a circuit total current during the on or off process of the target peltier refrigeration module through the detection circuit;
the running state detection module 53 is configured to sequentially determine whether a branch circuit in which the target peltier refrigeration module is located is abnormal based on the total circuit current; if abnormal, executing alarm operation;
the initial module updating module 54 is configured to update the initial module if there is no abnormality.
The embodiment of the invention provides a control device of a Peltier refrigeration module, which is used for judging whether each module needs to be switched or not according to an opening value from an initial module, and the control mode can reduce current impact on the whole circuit. And after a period of time, the initial module is updated, so that the same module is prevented from being used for a long time, the aging of a certain module is accelerated, the service life of the module of the whole system cannot reach theoretical consistency, and the service life of the module is prolonged. In the judging process of each module switch, the total current variation of the circuit before and after each module switch is compared with a preset threshold value, and whether the corresponding module branch circuit is abnormal or not is judged, so that the abnormal module is rapidly and accurately identified, and the after-sale inquiry problem is facilitated.
In a possible embodiment of the invention, the working time T starts to be counted after the start module is turned on.
In a possible embodiment of the present invention, the initial module update module is configured to compare a working time with a preset delay time threshold; if the working time is more than or equal to the preset delay time threshold, updating the starting module and setting the working time T to be 0, and re-timing after finishing updating; if the working time is less than the preset delay time threshold, the comparison step is still performed.
In a possible embodiment of the present invention, the start module is any one of a plurality of peltier refrigeration modules, and the start module is determined based on a preset flag bit; the circuit total current detection module is used for determining the relation between the opening value and a plurality of preset opening values from the initial module, wherein the plurality of preset opening values sequentially form a plurality of sections from small to large, and the number of the sections is 1 larger than that of the Peltier refrigeration modules; and if the opening value belongs to the ith of the multiple sections, controlling the first i-1 target peltier refrigerating modules to be started and controlling the peltier refrigerating modules except the target peltier refrigerating modules to be closed.
In a possible embodiment of the present invention, the circuit total current detection module is configured to control to close the I-th target peltier refrigeration module if it is determined that the opening value is based on the I-th target peltier refrigeration module, and detect the circuit total current L1 through the detection circuit; and then controlling to start the I target Peltier refrigeration module, and detecting the total current L2 of the circuit through the detection circuit.
In a possible embodiment of the present invention, the running state detection module is configured to determine whether L2-L1 is greater than or equal to a preset threshold L; if L2-L1 is more than or equal to L, determining that the branch circuit is normal; if L2-L1 < L, determining that the branch circuit is abnormal.
In a possible embodiment of the present invention, the circuit total current detection module is configured to control to turn on an mth target peltier refrigeration module if it is determined that the closed target peltier refrigeration module is the mth target peltier refrigeration module based on the opening value, and detect the circuit total current L3 through the detection circuit; and then controlling to close the Mth target Peltier refrigeration module, and detecting the total current L4 of the circuit through a detection circuit.
In a possible embodiment of the present invention, the running state detection module is configured to determine whether L3-L4 is greater than or equal to a preset threshold L; if L3-L4 is more than or equal to L, determining that the branch circuit is normal; if L3-L4 < L, determining that the branch circuit is abnormal.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the control system of the peltier cooling module described above may refer to the corresponding process in the foregoing embodiment of the control method of the peltier cooling system, which is not described herein again.
Embodiment four:
the embodiment of the invention also provides electronic equipment, which is used for running the control method of the Peltier refrigerating system; referring to the schematic structural diagram of an electronic device shown in fig. 6, the electronic device includes a memory 100 and a processor 101, where the memory 100 is configured to store one or more computer instructions, and the one or more computer instructions are executed by the processor 101 to implement the method for controlling a peltier refrigeration system described above.
Further, the electronic device shown in fig. 6 further includes a bus 102 and a communication interface 103, and the processor 101, the communication interface 103, and the memory 100 are connected through the bus 102.
The memory 100 may include a high-speed random access memory (RAM, random Access Memory), and may further include a non-volatile memory (non-volatile memory), such as at least one magnetic disk memory. The communication connection between the system network element and at least one other network element is implemented via at least one communication interface 103 (which may be wired or wireless), and may use the internet, a wide area network, a local network, a metropolitan area network, etc. Bus 102 may be an ISA bus, a PCI bus, an EISA bus, or the like. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, only one bi-directional arrow is shown in FIG. 6, but not only one bus or type of bus.
The processor 101 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 101 or instructions in the form of software. The processor 101 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but also digital signal processors (Digital Signal Processor, DSP for short), application specific integrated circuits (Application Specific Integrated Circuit, ASIC for short), field-programmable gate arrays (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 100 and the processor 101 reads information in the memory 100 and in combination with its hardware performs the steps of the method of the previous embodiments.
The embodiment of the invention also provides a computer readable storage medium, which stores computer executable instructions that, when being called and executed by a processor, cause the processor to implement the control method of the peltier cooling system, and the specific implementation can be referred to the method embodiment and will not be described herein.
The control method, the control device and the computer program product of the electronic device of the peltier cooling system provided by the embodiment of the present invention include a computer readable storage medium storing program codes, and instructions included in the program codes may be used to execute the method in the foregoing method embodiment, and specific implementation may refer to the method embodiment and will not be repeated herein.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system and/or apparatus may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In addition, in the description of embodiments of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a control method of peltier refrigerating system, its characterized in that, peltier refrigerating system includes a plurality of peltier refrigerating modules of parallelly connected and detects the detection circuit of a plurality of peltier refrigerating module total current, every peltier refrigerating module is provided with branch circuit, the method includes:
starting from an initial module of the peltier refrigeration modules, determining a target temperature and an actual temperature of a cooling object in sequence, and determining an opening value based on the target temperature and the actual temperature;
determining an opening or closing target peltier refrigeration module based on the opening value, and detecting the total circuit current of the target peltier refrigeration module in the opening or closing process through the detection circuit;
sequentially determining whether a branch circuit where the target Peltier refrigeration module is located is abnormal or not based on the total circuit current; if abnormal, executing alarm operation; if no abnormality exists, the initial module is updated.
2. The method of claim 1, wherein the operating time T begins to count after the start module is turned on.
3. The method of claim 2, wherein the step of updating the start module comprises:
comparing the working time with a preset delay time threshold;
if the working time is more than or equal to a preset delay time threshold, updating the starting module and setting the working time T to be 0, and re-timing after finishing updating;
if the working time is less than the preset delay time threshold value, the comparison step is still performed.
4. A method according to any one of claims 1 to 3, wherein the starting module is any one of the plurality of peltier cooling modules, the starting module being determined based on a preset flag bit; starting from the starting module, the step of determining the target peltier refrigeration module to be turned on or off based on the opening value includes:
determining the relation between the opening value and a plurality of preset opening values, wherein the plurality of preset opening values sequentially form a plurality of sections from small to large, and the number of the sections is 1 larger than that of the plurality of Peltier refrigeration modules;
and if the opening value belongs to the ith of the plurality of intervals, controlling the first i-1 target peltier refrigerating modules to be started, and controlling the peltier refrigerating modules except the target peltier refrigerating modules to be closed.
5. The method of claim 4, wherein the step of detecting, by the detection circuit, a total circuit current during the turning on or off of the target peltier refrigeration module comprises:
if the opening value is based on the fact that the target peltier refrigerating module is determined to be the ith, the ith target peltier refrigerating module is controlled to be closed, and the total circuit current L1 is detected through the detection circuit; and then controlling to start the I target Peltier refrigeration module, and detecting the total current L2 of the circuit through the detection circuit.
6. The method of claim 5, wherein the step of sequentially determining whether the bypass circuit in which the target peltier refrigeration module is located is abnormal based on the total circuit current comprises:
judging whether L2-L1 is more than or equal to a preset threshold L;
if L2-L1 is more than or equal to L, determining that the branch circuit is normal;
if L2-L1 < L, determining that the branch circuit is abnormal.
7. The method of claim 4, wherein the step of detecting, by the detection circuit, a total circuit current during the turning on or off of the target peltier refrigeration module comprises:
if the closed target Peltier refrigeration module is determined to be the Mth based on the opening value, controlling to start the Mth target Peltier refrigeration module, and detecting the total circuit current L3 through the detection circuit; and then controlling to close the Mth target Peltier refrigeration module, and detecting the total circuit current L4 through the detection circuit.
8. The method of claim 7, wherein the step of sequentially determining whether the bypass circuit in which the target peltier refrigeration module is located is abnormal based on the total circuit current comprises:
judging whether L3-L4 is more than or equal to a preset threshold L;
if L3-L4 is more than or equal to L, determining that the branch circuit is normal;
if L3-L4 < L, determining that the branch circuit is abnormal.
9. The control device of the peltier refrigerating system is characterized in that the peltier refrigerating system comprises a plurality of peltier refrigerating modules connected in parallel and a detection circuit for detecting total current of the peltier refrigerating modules, and each peltier refrigerating module is provided with a branch circuit; the device comprises:
the opening value determining module is used for sequentially determining a target temperature and an actual temperature of a cooling object from an initial module of the peltier refrigerating modules, and determining an opening value based on the target temperature and the actual temperature;
the circuit total current detection module is used for determining an opening or closing target peltier refrigeration module based on the opening value, and detecting the circuit total current of the target peltier refrigeration module in the opening or closing process through the detection circuit;
the running state detection module is used for sequentially determining whether a branch circuit where the target Peltier refrigeration module is located is abnormal or not based on the total current of the circuit; if abnormal, executing alarm operation;
and the initial module updating module is used for updating the initial module if no abnormality exists.
10. An electronic device comprising a processor and a memory, the memory storing computer-executable instructions executable by the processor, the processor executing the computer-executable instructions to implement a control method of performing the peltier refrigeration system of any one of claims 1 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118170190A (en) * | 2024-05-15 | 2024-06-11 | 苏州百源基因技术有限公司 | Temperature control system of PCR instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118170190A (en) * | 2024-05-15 | 2024-06-11 | 苏州百源基因技术有限公司 | Temperature control system of PCR instrument |
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