CN220018736U - Temperature detection circuit - Google Patents
Temperature detection circuit Download PDFInfo
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- CN220018736U CN220018736U CN202321317465.0U CN202321317465U CN220018736U CN 220018736 U CN220018736 U CN 220018736U CN 202321317465 U CN202321317465 U CN 202321317465U CN 220018736 U CN220018736 U CN 220018736U
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Abstract
The utility model discloses a temperature detection circuit, which comprises: the device comprises a temperature detection module, a switch module, an alarm module and a reset module; the temperature detection module is connected with a temperature signal to be detected, and is used for outputting a detection signal according to the temperature signal to be detected; when the temperature signal to be detected does not meet the first preset threshold value, the switch module is used for being conducted according to the detection signal output by the temperature detection module, and when the temperature signal to be detected meets the first preset threshold value, the switch module is used for being turned off according to the detection signal output by the temperature detection module; the alarm module is used for outputting or closing an alarm signal according to the on or off of the switch module; the reset module is connected with the switch module and the alarm module and is used for controlling the alarm module to be turned off when the temperature signal to be detected meets a second preset threshold value and controlling the alarm module to reset when the temperature signal to be detected meets a first preset threshold value. The utility model can realize the automatic reset of the alarm module when the temperature is normal after the alarm signal is closed.
Description
Technical Field
The present disclosure relates to electronic circuits, and particularly to a temperature detecting circuit.
Background
Most products consider the influence of temperature, so that the temperature needs to be monitored in real time, and faults caused by abnormal temperature are avoided.
At present, the temperature detection circuit generally comprises an alarm module, when the temperature is abnormal, the alarm module sends an alarm signal, however, for an alarm caused by the abnormal temperature during the period from normal temperature heating to normal set temperature, the alarm module is required to be manually closed at the time, when the temperature is heated to the normal set temperature range, the alarm module is required to be manually opened, however, the alarm module cannot be opened in time after the alarm module is closed due to manual misoperation.
Disclosure of Invention
The utility model provides a temperature detection circuit, which solves the problem that an alarm module cannot be opened in time due to manual misoperation in the prior art.
According to an aspect of the present utility model, there is provided a temperature detection circuit including: the device comprises a temperature detection module, a switch module, an alarm module and a reset module;
the temperature detection module is connected with a temperature signal to be detected, and is used for outputting a detection signal according to the temperature signal to be detected;
the switch module is connected with the temperature detection module, and is used for being conducted according to the detection signal output by the temperature detection module when the temperature signal to be detected does not meet a first preset threshold value, and is used for being turned off according to the detection signal output by the temperature detection module when the temperature signal to be detected meets the first preset threshold value;
the alarm module is connected with the switch module and is used for outputting or closing an alarm signal according to the on or off state of the switch module;
the reset module is connected with the switch module and the alarm module, and is used for controlling the alarm module to be turned off when the temperature signal to be detected meets a second preset threshold value and controlling the alarm module to be reset when the temperature signal to be detected meets a first preset threshold value.
Optionally, the switch module includes a first switch unit and a second switch unit, the first switch unit is connected the temperature detection module with the alarm module, the first switch unit is used for switching on when waiting to detect temperature signal and is greater than first default, the second switch unit is connected the temperature detection module with the alarm module, the second switch unit is used for switching on when waiting to detect temperature signal and is less than first default.
Optionally, the first switch unit includes a first relay, the first end of first relay coil is connected temperature detection module, the second end of first relay coil is connected first power negative pole, the first end of first relay normally open contact is connected the positive pole of first power, the second end of first relay normally open contact is connected alarm module.
Optionally, the second switch unit includes the second relay, the first end of second relay coil is connected temperature detection module, the second end of second relay coil is connected first power negative pole, the first end of second relay normally open contact is connected the positive pole of first power, the second end of second relay normally open contact is connected alarm module.
Optionally, the reset module includes a key and a third switch unit, a first end of the key is connected with the switch module, a second end of the key is connected with the third switch unit, and the third switch unit is connected with the switch module and the alarm module.
Optionally, the third switch unit includes the third relay, the first end of third relay coil is connected the second end of button, the negative pole of first power is connected to the second end of third relay coil, the first end of third relay normally open contact is connected the first end of button, the second end of third relay normally open contact is connected the second end of button, the first end of third relay normally closed contact is connected the first end of button, the second end of third relay normally closed contact is connected alarm module.
Optionally, the temperature detection module comprises a control unit and a display unit, the control unit is connected with the display unit, the control unit is used for outputting a detection signal according to an input temperature signal to be detected, and the display unit is used for displaying the temperature signal to be detected.
Optionally, the control unit includes a microcontroller, and the microcontroller is connected to the positive electrode of the first power supply.
Optionally, the display unit includes a temperature display panel, and the temperature display panel is connected with the first power supply positive electrode and the microcontroller.
Optionally, the alarm module includes an alarm, a first end of the alarm is connected with the reset module, and a second end of the alarm is connected with a negative electrode of the first power supply.
The technical scheme of the embodiment of the utility model provides a temperature detection circuit, which comprises: the device comprises a temperature detection module, a switch module, an alarm module and a reset module; the temperature detection module is connected with a temperature signal to be detected, and is used for outputting a detection signal according to the temperature signal to be detected; the switch module is connected with the temperature detection module, and is used for being conducted according to the detection signal output by the temperature detection module when the temperature signal to be detected does not meet the first preset threshold value, and is used for being turned off according to the detection signal output by the temperature detection module when the temperature signal to be detected meets the first preset threshold value; the alarm module is connected with the switch module and is used for outputting or closing an alarm signal according to the on or off state of the switch module; the reset module is connected with the switch module and the alarm module, and is used for controlling the alarm module to be turned off when the temperature signal to be detected meets a second preset threshold value and controlling the alarm module to reset when the temperature signal to be detected meets a first preset threshold value. The alarm module sends an alarm signal when the temperature signal to be detected does not reach the set temperature, and the reset module closes the alarm signal according to the condition that the temperature signal to be detected meets the normal range (namely meets the second preset threshold), and realizes automatic reset of the alarm module when the temperature signal to be detected reaches the set temperature (namely meets the first preset threshold). The problem that an alarm module cannot be opened in time due to manual misoperation in the prior art is solved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the utility model or to delineate the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a temperature detection circuit according to an embodiment of the present utility model;
FIG. 2 is a circuit diagram of a temperature detection circuit according to an embodiment of the present utility model;
fig. 3 is a circuit diagram of another temperature detection circuit according to an embodiment of the present utility model.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the utility model provides a temperature detection circuit, and fig. 1 is a schematic structural diagram of the temperature detection circuit provided by the embodiment of the utility model, and as shown in fig. 1, the temperature detection circuit comprises a temperature detection module 110, a switch module 120, an alarm module 130 and a reset module 140; the temperature detection module 110 is connected to the temperature signal to be detected, and the temperature detection module 110 is used for outputting a detection signal according to the temperature signal to be detected; the switch module 120 is connected to the temperature detection module 110, and when the temperature signal to be detected does not meet the first preset threshold, the switch module 120 is used for being turned on according to the detection signal output by the temperature detection module 110, and when the temperature signal to be detected meets the first preset threshold, the switch module 120 is used for being turned off according to the detection signal output by the temperature detection module 110; the alarm module 130 is connected with the switch module 120, and the alarm module 130 is used for outputting or closing an alarm signal according to the on or off of the switch module 120; the reset module 140 is connected to the switch module 120 and the alarm module 130, and the reset module 140 is configured to control the alarm module 130 to be turned off when the temperature signal to be measured meets the second preset threshold, and to control the alarm module 130 to be reset when the temperature signal to be measured meets the first preset threshold.
In this embodiment, the temperature detection module 110 is a module for detecting temperature, for example, the temperature detection module 110 includes a temperature sensor and the like, and the temperature detection module 110 may convert a temperature signal into a detection signal, where the detection signal may be an electrical signal and the like. The switch module 120 is a module that is turned on or off according to a detection signal, for example, when the detection signal is at a high level, the switch module is turned on, and when the detection signal is at a low level, the switch module is turned off. The alarm module 130 is a module that can emit an alarm signal, and for example, the alarm module includes an alarm lamp, a buzzer, and the like. The reset module 140 is a module that turns off or resets the alarm module 130, for example, the reset module 140 includes a switch or the like.
In an exemplary process of increasing the temperature signal to be detected from the external environment temperature to the preset temperature, the temperature detection module 110 converts the temperature signal to be detected into an electrical signal according to the connected temperature signal to be detected, when the temperature signal to be detected meets a first preset threshold, the electrical signal output by the temperature detection module 110 is at a low level, the switch module 120 is turned off, and at this time, the alarm module 130 does not output an alarm signal, where the first preset threshold may be a temperature value in a small range around the preset temperature. When the temperature signal to be detected does not meet the first preset threshold, the electrical signal output by the temperature detection module 110 is at a high level, the switch module 120 is turned on, at this time, the alarm module 130 outputs an alarm signal, and if the temperature signal to be detected meets the second preset threshold, the reset module 140 controls the alarm module 130 to be turned off, and the alarm module 130 does not output the alarm signal any more, wherein the second preset threshold is a temperature value in which the temperature signal to be detected increases from the external environment temperature to the first preset threshold range. When the temperature signal to be detected increases to the first preset threshold, the reset module 140 controls the alarm module 130 to reset, and if the temperature signal to be detected does not meet the first preset threshold, the alarm module 130 outputs an alarm signal.
The embodiment provides a temperature detection circuit, including: the device comprises a temperature detection module, a switch module, an alarm module and a reset module; the temperature detection module is connected with a temperature signal to be detected, and is used for outputting a detection signal according to the temperature signal to be detected; the switch module is connected with the temperature detection module, and is used for being conducted according to the detection signal output by the temperature detection module when the temperature signal to be detected does not meet the first preset threshold value, and is used for being turned off according to the detection signal output by the temperature detection module when the temperature signal to be detected meets the first preset threshold value; the alarm module is connected with the switch module and is used for outputting or closing an alarm signal according to the on or off state of the switch module; the reset module is connected with the switch module and the alarm module, and is used for controlling the alarm module to be turned off when the temperature signal to be detected meets a second preset threshold value and controlling the alarm module to reset when the temperature signal to be detected meets a first preset threshold value. The alarm module sends an alarm signal when the temperature signal to be detected does not reach the set temperature, and the reset module closes the alarm signal according to the condition that the temperature signal to be detected meets the normal range (namely meets the second preset threshold), and realizes automatic reset of the alarm module when the temperature signal to be detected reaches the set temperature (namely meets the first preset threshold). The problem that an alarm module cannot be opened in time due to manual misoperation in the prior art is solved.
Fig. 2 is a circuit diagram of a temperature detection circuit provided in an embodiment of the present utility model, as shown in fig. 2, a switch module 120 includes a first switch unit and a second switch unit, the first switch unit is connected to the temperature detection module 110 and the alarm module 130, the first switch unit is used for being turned on when a temperature signal to be detected is greater than a first preset threshold, the second switch unit is connected to the temperature detection module 110 and the alarm module 130, and the second switch unit is used for being turned on when the temperature signal to be detected is less than the first preset threshold.
In this embodiment, the first switching unit includes a switching element, and the second switching unit includes a switching element. When the temperature signal to be detected does not meet the first preset threshold, the temperature detection module 110 outputs a high-level signal, and when the temperature signal to be detected is greater than the first preset threshold, the temperature detection module 110 controls the output high-level signal to be transmitted to the first switch unit, and the first switch unit is turned on. When the temperature signal to be detected is smaller than the first preset threshold, the temperature detection module 110 controls the output high-level signal to be transmitted to the second switch unit, and the second switch unit is turned on. The temperature detection module 110 respectively controls the first switch unit and the second switch unit according to the condition that the temperature signal to be detected is larger than the first preset threshold value and smaller than the first preset threshold value, so that the accuracy of signal control is improved.
Specifically, the first switch unit includes a first relay KA1, a first end of a coil of the first relay KA1 is connected with the temperature detection module 110, a second end of the coil of the first relay KA1 is connected with a negative electrode of the first power supply V1, a first end of a normally open contact of the first relay KA1 is connected with a positive electrode of the first power supply V1, and a second end of the normally open contact of the first relay KA1 is connected with the alarm module 130. The second switch unit includes second relay KA2, and temperature detection module 110 is connected to the first end of second relay KA 2's coil, and first power V1 negative pole is connected to the second end of second relay KA 2's coil, and the positive pole of first power V1 is connected to the first end of second relay KA 2's normally open contact, and alarm module 130 is connected to the second end of second relay KA2 normally open contact.
In the present embodiment, the first relay KA1 and the second relay KA2 have an adjusting function in the circuit as switching elements. When the temperature signal to be detected is greater than the first preset threshold value, the coil of the first relay KA1 receives the high-level signal output by the temperature detection module 110, the coil of the first relay KA1 is powered on, the normally open contact of the first relay KA1 is closed, and the alarm module 130 outputs an alarm signal. When the temperature signal to be detected is smaller than the first preset threshold value, the coil of the second relay KA2 receives the high-level signal output by the temperature detection module 110, the coil of the second relay KA2 is powered on, the normally open contact of the second relay KA2 is closed, and the alarm module 130 outputs an alarm signal.
With continued reference to fig. 2, the reset module 140 includes a key SB1 and a third switch unit, the first end of the key SB1 is connected to the switch module 120, the second end of the key SB1 is connected to the third switch unit, and the third switch unit is connected to the switch module 120 and the alarm module 130. The key SB1 may be an automatic reset key (i.e., automatically flicked after being pressed), and the third switch unit includes a switch element. When the key SB1 is pressed, the third switching unit controls the switching module 120 to be disconnected from the alarm module 130, and the alarm module 130 no longer outputs an alarm signal.
Specifically, the third switch unit includes third relay KA3, the second end of button SB1 is connected to the first end of the coil of third relay KA3, the negative pole of first power V1 is connected to the second end of the coil of third relay KA3, the first end of button SB1 is connected to the first end of the normally open contact of third relay KA3, the second end of button SB1 is connected to the second end of the normally open contact of third relay KA3, the first end of button SB1 is connected to the first end of the normally closed contact of third relay KA3, alarm module 130 is connected to the second end of the normally closed contact of third relay KA 3.
In this embodiment, when the key SB1 is pressed (the coil of the third relay KA3 is automatically sprung up after the key SB1 is pressed), the normally open contact of the third relay KA3 is closed, and after the coil of the third relay KA3 is electrified, the normally open contact of the third relay KA3 is closed, so that the coil of the third relay KA3 is always in an electrified state, the third relay KA3 realizes self-locking, and the normally closed contact of the third relay KA3 is opened. Because the first end of the normally-closed contact of the third relay KA3 is also connected to the second end of the normally-open contact of the first relay KA1 and the second end of the normally-open contact of the second relay KA2, when the normally-closed contact of the third relay KA3 is opened, the switch module 120 is disconnected from the alarm module 130, and the alarm module 130 no longer outputs an alarm signal.
With continued reference to fig. 2, the alarm module 130 includes an alarm H, a first end of the alarm H is connected to the reset module 140, and a second end of the alarm H is connected to the negative pole of the first power source V1. The first end of the alarm H is connected to the second end of the normally closed contact of the third relay KA3 in the reset module 140, and the alarm H may be a buzzer, which is not limited thereto.
Fig. 3 is a circuit diagram of another temperature detection circuit according to an embodiment of the present utility model, as shown in fig. 3, the temperature detection module 110 includes a control unit and a display unit, where the control unit is connected to the display unit, the control unit is configured to output a detection signal according to an input temperature signal to be detected, and the display unit is configured to display the temperature signal to be detected. The control unit comprises a microcontroller U1, and the microcontroller U1 is connected with the positive electrode of the first power supply V1. The display unit comprises a temperature display panel 310, and the temperature display panel 310 is connected with the anode of the first power supply V1 and the microcontroller U1.
In this embodiment, the control unit may perform information reading, information conversion, and other processes on the input temperature signal to be detected, and control the reset module 140 of the switch module 120 according to the read information. The display unit can display the temperature signal to be detected in real time, so that the real-time monitoring of the temperature is realized.
In this embodiment, the microcontroller U1 is connected to the first end of the coil of the first relay KA1 and the first end of the coil of the second relay KA 2. When the temperature signal to be detected received by the microcontroller U1 meets a first preset threshold value, the microcontroller U1 outputs a low-level signal, the coil of the first relay KA1 and the coil of the second relay KA2 cannot be powered on, the normally open contact of the first relay KA1 and the normally open contact of the second relay KA2 are in an open state, and the alarm does not output an alarm signal. When the temperature signal to be detected received by the microcontroller U1 is larger than a first preset threshold value, the microcontroller U1 outputs a high-level signal, the coil of the first relay KA1 is electrified, the normally open contact of the first relay KA1 is closed, and the alarm outputs an alarm signal. When the temperature signal to be detected received by the microcontroller U1 is smaller than a first preset threshold value, the microcontroller U1 outputs a high-level signal, the coil of the second relay KA2 is powered on, the normally open contact of the second relay KA2 is closed, and the alarm outputs an alarm signal. When the temperature signal to be detected does not meet the first preset threshold value and meets the second preset threshold value, the key SB1 is pressed to release the alarm, when the temperature signal to be detected is increased to the first preset threshold value, the coil of the first relay KA1 and the coil of the second relay KA2 cannot be powered, the normally open contact of the first relay KA1 and the normally open contact of the second relay KA2 are both in an open state, the coil of the third relay KA3 is powered off, the normally closed contact of the third relay KA3 is restored to a closed state, the alarm module 130 is reset, and if the temperature signal to be detected does not meet the first preset threshold value, the alarm module 130 outputs an alarm signal.
According to the embodiment, the reset module in the temperature detection circuit closes the alarm signal according to the temperature signal to be detected in a normal range, and realizes automatic reset of the alarm module when the temperature signal to be detected reaches the set temperature, so that the alarm module cannot work normally due to manual misoperation is avoided, and the accuracy of the detection result of the temperature detection circuit is improved.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present utility model may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present utility model are achieved, and the present utility model is not limited herein.
The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.
Claims (10)
1. A temperature detection circuit, comprising: the device comprises a temperature detection module, a switch module, an alarm module and a reset module;
the temperature detection module is connected with a temperature signal to be detected, and is used for outputting a detection signal according to the temperature signal to be detected;
the switch module is connected with the temperature detection module, and is used for being conducted according to the detection signal output by the temperature detection module when the temperature signal to be detected does not meet a first preset threshold value, and is used for being turned off according to the detection signal output by the temperature detection module when the temperature signal to be detected meets the first preset threshold value;
the alarm module is connected with the switch module and is used for outputting or closing an alarm signal according to the on or off state of the switch module;
the reset module is connected with the switch module and the alarm module, and is used for controlling the alarm module to be turned off when the temperature signal to be detected meets a second preset threshold value and controlling the alarm module to be reset when the temperature signal to be detected meets a first preset threshold value.
2. The temperature detection circuit of claim 1, wherein the switch module comprises a first switch unit and a second switch unit, the first switch unit is connected with the temperature detection module and the alarm module, the first switch unit is used for being conducted when the temperature signal to be detected is greater than a first preset threshold value, the second switch unit is connected with the temperature detection module and the alarm module, and the second switch unit is used for being conducted when the temperature signal to be detected is less than the first preset threshold value.
3. The temperature detection circuit of claim 2, wherein the first switching unit comprises a first relay, a first end of the first relay coil is connected to the temperature detection module, a second end of the first relay coil is connected to a negative pole of a first power source, a first end of the first relay normally open contact is connected to a positive pole of the first power source, and a second end of the first relay normally open contact is connected to the alarm module.
4. A temperature sensing circuit according to claim 3, wherein the second switching unit comprises a second relay, a first end of the second relay coil is connected to the temperature sensing module, a second end of the second relay coil is connected to the negative pole of the first power source, a first end of the second relay normally open contact is connected to the positive pole of the first power source, and a second end of the second relay normally open contact is connected to the alarm module.
5. The temperature detection circuit of claim 1, wherein the reset module comprises a key and a third switch unit, a first end of the key is connected to the switch module, a second end of the key is connected to the third switch unit, and the third switch unit is connected to the switch module and the alarm module.
6. The temperature detection circuit of claim 5, wherein the third switch unit comprises a third relay, a first end of the third relay coil is connected to the second end of the key, a second end of the third relay coil is connected to a negative pole of the first power supply, a first end of the third relay normally open contact is connected to the first end of the key, a second end of the third relay normally open contact is connected to the second end of the key, a first end of the third relay normally closed contact is connected to the first end of the key, and a second end of the third relay normally closed contact is connected to the alarm module.
7. The temperature detection circuit according to claim 1, wherein the temperature detection module comprises a control unit and a display unit, the control unit is connected with the display unit, the control unit is used for outputting a detection signal according to an input temperature signal to be detected, and the display unit is used for displaying the temperature signal to be detected.
8. The temperature detection circuit of claim 7, wherein the control unit comprises a microcontroller connected to the positive pole of the first power supply.
9. The temperature detection circuit of claim 8, wherein the display unit comprises a temperature display panel that connects the first power supply positive pole and the microcontroller.
10. The temperature detection circuit of claim 1, wherein the alarm module comprises an alarm, a first end of the alarm is connected to the reset module, and a second end of the alarm is connected to a negative pole of the first power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321317465.0U CN220018736U (en) | 2023-05-25 | 2023-05-25 | Temperature detection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321317465.0U CN220018736U (en) | 2023-05-25 | 2023-05-25 | Temperature detection circuit |
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| CN220018736U true CN220018736U (en) | 2023-11-14 |
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| CN202321317465.0U Active CN220018736U (en) | 2023-05-25 | 2023-05-25 | Temperature detection circuit |
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