CN220708581U - Motor temperature sampling system based on NTC type resistor - Google Patents
Motor temperature sampling system based on NTC type resistor Download PDFInfo
- Publication number
- CN220708581U CN220708581U CN202321360198.5U CN202321360198U CN220708581U CN 220708581 U CN220708581 U CN 220708581U CN 202321360198 U CN202321360198 U CN 202321360198U CN 220708581 U CN220708581 U CN 220708581U
- Authority
- CN
- China
- Prior art keywords
- resistor
- temperature
- temperature sampling
- sampling
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 151
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 19
- 230000003245 working effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007405 data analysis Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
The utility model discloses a motor temperature sampling system based on an NTC type resistor in the technical field of motor temperature sampling, and aims to solve the problems that a temperature sampling circuit in the prior art can only have higher sampling precision in a certain temperature interval and cannot have higher sampling precision from low temperature to high temperature. The motor temperature sampling circuit comprises two temperature sampling circuits and a temperature sampling detection circuit, wherein the two temperature sampling circuits are respectively used for sampling the temperatures of motors with different temperatures, and the temperature sampling detection circuit is used for detecting the working states of the two temperature sampling circuits; the motor temperature sampling system is suitable for motor temperature sampling, and the two temperature sampling circuits are respectively used for motor temperature sampling work of different temperatures, so that the motor temperature sampling system in the application has higher sampling precision from low temperature to high temperature, and the working effect of the device is ensured; and a temperature sampling detection circuit is additionally arranged for the detection work of the two temperature sampling circuits.
Description
Technical Field
The utility model relates to a motor temperature sampling system based on an NTC resistor, and belongs to the technical field of motor temperature sampling.
Background
In electronic products, temperature is always a critical parameter, especially in the automotive industry, and the working range is typically-40 ℃ to 125 ℃, and the temperature sampling circuit needs to maintain high sampling precision in a wide temperature range. The current temperature sampling circuit adopts a plurality of resistor voltage dividing modes, and has the advantages of simple design structure, low cost and capability of being applied to most occasions.
The temperature sampling circuit in the prior art can only have higher sampling precision in a certain temperature interval, cannot have higher sampling precision from low temperature to high temperature, and is difficult to ensure the sampling precision of the temperature sampling circuit under different temperature environments, so that the working effect of the circuit is affected.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, provides a motor temperature sampling system based on an NTC type resistor, and solves the problems that a temperature sampling circuit in the prior art can only have higher sampling precision in a certain temperature interval, cannot have higher sampling precision from low temperature to high temperature, and is difficult to ensure the sampling precision of the temperature sampling circuit under different temperature environments.
In order to solve the technical problems, the utility model is realized by adopting the following technical scheme:
the utility model provides a motor temperature sampling system based on an NTC type resistor, which comprises two temperature sampling circuits and a temperature sampling detection circuit, wherein the two temperature sampling circuits are respectively used for sampling the motor temperatures at different temperatures, and the temperature sampling detection circuit is used for detecting the working states of the two temperature sampling circuits.
Further, the working range of the temperature sampling circuit is-40 ℃ to 125 ℃.
Further, one of the temperature sampling circuits is used for motor temperature sampling operation at-40 ℃ to-15 ℃, and the other temperature sampling circuit is used for motor temperature sampling operation at-15 ℃ to 125 ℃.
Further, the temperature sampling circuit comprises a first resistor R1, a second resistor R2, a third resistor R3 and a capacitor C1, one end of the first resistor R1 is connected with a power supply voltage, the other end of the first resistor R1 is connected with one end of the third resistor R3 and one end of the second resistor R2, the other end of the third resistor R3 is grounded, the other end of the second resistor R2 is connected with a CPU and one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded.
Further, the third resistor R3 is a negative temperature coefficient thermistor.
Further, the resistance value of the first resistor R1 in one of the temperature sampling circuits is larger than the resistance value of the first resistor R1 in the other temperature sampling circuit.
Further, the temperature sampling detection circuit includes the first resistor R1, the second circuit R2, the third resistor R3, the fourth resistor R4 and the capacitor C1, one end of the first resistor R1 is connected with the power supply voltage, the other end of the first resistor R1 is connected with one end of the third resistor R3, one end of the second resistor R2 and one end of the fourth resistor R4, the other end of the fourth resistor R4 is grounded, the other end of the third resistor R3 is grounded, the other end of the second resistor R2 is connected with the CPU and one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded.
Compared with the prior art, the utility model has the beneficial effects that:
according to the motor temperature sampling system based on the NTC resistor, two temperature sampling circuits are adopted, wherein one temperature sampling circuit is used for sampling the motor temperature at low temperature, the other temperature sampling circuit is used as the motor sampling temperature at high temperature, and the two temperature sampling circuits are matched to work, so that the motor temperature sampling system in the application can achieve higher sampling precision from low temperature to high temperature, and the application is applicable to different temperature environments on the premise that the temperature sampling circuits have the advantages of simplicity in design, low cost and wide sampling range, and the working effect of the device is guaranteed; in this application still sets up a temperature sampling detection circuit in addition, and it all has good sampling temperature in full temperature range, and it is used in the detection work of two temperature sampling circuits, has guaranteed the stability of device.
Drawings
Fig. 1 is a schematic circuit diagram of a temperature sampling circuit provided according to an embodiment of the present utility model;
FIG. 2 is a data analysis diagram of a temperature sampling circuit provided according to an embodiment of the present utility model;
FIG. 3 is a schematic circuit diagram of a temperature sampling detection circuit provided according to an embodiment of the present utility model;
fig. 4 is a data analysis diagram of a temperature sampling detection circuit provided according to an embodiment of the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model 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 utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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 utility model can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1-4, the utility model provides a motor temperature sampling system based on an NTC resistor, which comprises two temperature sampling circuits and a temperature sampling detection circuit, wherein the two temperature sampling circuits are respectively used for sampling motor temperatures at different temperatures, and the temperature sampling detection circuit is used for detecting the working states of the two temperature sampling circuits.
Specifically, when the temperature sampling circuit has higher sampling precision at a high temperature, the sampling precision thereof at a low temperature is poor, and when the temperature sampling coefficient has higher sampling precision at a low temperature, the sampling precision thereof at a high temperature is poor; according to the motor temperature sampling system, two temperature sampling circuits are adopted, one temperature sampling circuit is used as the motor sampling temperature at the low temperature of-40 ℃ to-15 ℃, the other temperature sampling circuit is used as the motor sampling temperature at the high temperature of-15 ℃ to 125 ℃, and the two temperature sampling circuits are matched to work, so that the motor temperature sampling system in the motor temperature sampling system has higher sampling precision from low temperature to high temperature, and the motor temperature sampling system is suitable for different temperature environments on the premise that the temperature sampling circuit has the advantages of simplicity in design, low cost and wide sampling range, and the working effect of the device is guaranteed; in this application, set up a temperature sampling detection circuit in addition, it all has good sampling temperature in full temperature range, it is used in the detection work of two temperature sampling circuits, under same environment, obtain temperature sampling detection circuit's sampling result and the sampling result of the temperature sampling circuit who uses at present, compare two sampling results, if the gap is not big, then judge this temperature sampling circuit work normally, if the gap is big, then judge this temperature sampling circuit work abnormality, need maintain it, the stability of device has been guaranteed.
As shown in fig. 1-2, in one embodiment, the temperature sampling circuit includes a first resistor R1, a second resistor R2, a third resistor R3, and a capacitor C1, where one end of the first resistor R1 is connected to a power supply voltage, the other end of the first resistor R1 is connected to one end of the third resistor R3 and one end of the second resistor R2, the other end of the third resistor R3 is grounded, the other end of the second resistor R2 is connected to a CPU and one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded.
Specifically, in most cases, when the third resistor R3 is at high temperature, a very small range of the resistance value corresponds to a very long temperature interval, and the sampling precision is not high, which means that the sampling circuit cannot embody the temperature at the current moment with higher precision in the full temperature range, which is very unfavorable for the working protection of the motor; in the circuit provided by the application, the third resistor R3 is a negative temperature coefficient thermistor, the resistance value of the third resistor is reduced along with the rise of temperature, the third resistor is divided with the first resistor R1, the voltage at two ends of the third resistor R3 is transmitted to the CPU, the CPU converts the read voltage value into a temperature value according to a relation table of temperature and voltage, the second resistor R2 and the first capacitor C1 form a simple RC filter, interference signals are filtered, and interference in the transmission process of sampling signals is reduced; according to fig. 2, when the value of the first resistor R1 is relatively smaller, the temperature sampling circuit exhibits higher sampling precision in the high temperature range, and when the value of the first resistor R1 is relatively larger, the temperature sampling circuit exhibits lower sampling precision in the high temperature range, based on which two temperature sampling circuits are provided, which are respectively used as the motor sampling temperature at low temperature and high temperature, so that timely temperature protection can be adopted for the motor.
As shown in fig. 3-4, in one embodiment, the temperature sampling detection circuit includes the first resistor R1, the second circuit R2, the third resistor R3, the fourth resistor R4, and the capacitor C1, one end of the first resistor R1 is connected to the power supply voltage, the other end of the first resistor R1 is connected to one end of the third resistor R3, one end of the second resistor R2, and one end of the fourth resistor R4, the other end of the fourth resistor R4 is grounded, the other end of the third resistor R3 is grounded, the other end of the second resistor R2 is connected to the CPU and one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded.
Specifically, the application provides a temperature sampling detection circuit based on a temperature sampling circuit, which has good sampling precision in the whole temperature range, according to fig. 4, after the two ends of a third resistor R3 are connected in parallel with a fourth resistor R4, the voltage value acquired by a CPU has good resolution at high temperature and low temperature, but has no pertinence like the previous two temperature sampling circuits, the temperature sampling detection circuit is more balanced, the temperature sampling detection circuit is used as the temperature sampling detection circuit, whether the two temperature sampling circuits at high temperature and low temperature normally work or not is judged, the temperature sampling at the current moment is based on the two temperature sampling circuits shown in fig. 1, so that the temperature sampling circuit can have higher sampling precision at low temperature and high temperature and can monitor whether the temperature sampling circuit normally works, the working effect of the device is ensured, and meanwhile, the stability of the device in working is ensured.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (5)
1. The motor temperature sampling system based on the NTC type resistor is characterized by comprising two temperature sampling circuits and a temperature sampling detection circuit, wherein the two temperature sampling circuits are respectively used for sampling the motor temperatures at different temperatures, and the temperature sampling detection circuit is used for detecting the working states of the two temperature sampling circuits;
the temperature sampling circuit comprises a first resistor R1, a second resistor R2, a third resistor R3 and a capacitor C1, wherein one end of the first resistor R1 is connected with a power supply voltage, the other end of the first resistor R1 is connected with one end of the third resistor R3 and one end of the second resistor R2, the other end of the third resistor R3 is grounded, the other end of the second resistor R2 is connected with a CPU and one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded;
the temperature sampling detection circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a capacitor C1, wherein one end of the first resistor R1 is connected with the power supply voltage, the other end of the first resistor R1 is connected with one end of the third resistor R3, one end of the second resistor R2 and one end of the fourth resistor R4, the other end of the fourth resistor R4 is grounded, the other end of the third resistor R3 is grounded, the other end of the second resistor R2 is connected with one end of a CPU and one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded.
2. A motor temperature sampling system based on NTC-type resistors according to claim 1, characterized in that the operating range of the temperature sampling circuit is-40-125 ℃.
3. A motor temperature sampling system based on NTC-type resistors according to claim 2, characterized in that one of said temperature sampling circuits is used for motor temperature sampling operation at-40 ℃ -15 ℃, and the other of said temperature sampling circuits is used for motor temperature sampling operation at-15 ℃ -125 ℃.
4. The system of claim 1, wherein the third resistor R3 is a negative temperature coefficient thermistor.
5. The NTC-type resistor-based motor temperature sampling system according to claim 1, wherein the resistance value of the first resistor R1 in one of the temperature sampling circuits is greater than the resistance value of the first resistor R1 in the other one of the temperature sampling circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321360198.5U CN220708581U (en) | 2023-05-31 | 2023-05-31 | Motor temperature sampling system based on NTC type resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321360198.5U CN220708581U (en) | 2023-05-31 | 2023-05-31 | Motor temperature sampling system based on NTC type resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220708581U true CN220708581U (en) | 2024-04-02 |
Family
ID=90441262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321360198.5U Active CN220708581U (en) | 2023-05-31 | 2023-05-31 | Motor temperature sampling system based on NTC type resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220708581U (en) |
-
2023
- 2023-05-31 CN CN202321360198.5U patent/CN220708581U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206223315U (en) | A kind of temperature transducer of low-power consumption | |
| WO2023098521A1 (en) | New energy vehicle, vehicle-mounted charging device, temperature measurement circuit, and temperature measurement method | |
| CN220708581U (en) | Motor temperature sampling system based on NTC type resistor | |
| CN104267352A (en) | Multifunctional electric vehicle battery management system | |
| CN210347896U (en) | Low-power consumption flow measurement data acquisition equipment prevents broken string detection circuitry | |
| CN211626739U (en) | PT100 platinum thermal resistance temperature sampling circuit | |
| CN110907053B (en) | Temperature detection circuit and electronic equipment | |
| CN209230815U (en) | Charging gun temperature sensing circuit and charging gun | |
| CN108593133A (en) | Detection circuit, the method, apparatus of the water temperature of handpiece Water Chilling Units in a kind of detection air-conditioning | |
| CN212083624U (en) | Voltage detection circuit, circuit board, device and vehicle-mounted air conditioner | |
| CN221803169U (en) | Temperature detection circuit and battery management system | |
| CN201974715U (en) | Cooling water temperature signal conditioning circuit | |
| CN204188776U (en) | A kind of multifunctional motor-driven automobile batteries management system | |
| CN206639016U (en) | For automobile instrument water temperature fuel sensor sample circuit | |
| CN217111217U (en) | Wide-adaptability temperature measurement system with power supply compensation | |
| CN219475725U (en) | Detection circuit capable of detecting precise resistance | |
| CN217384485U (en) | Platinum resistance sensor detection circuit | |
| CN220872584U (en) | Test adapter suitable for three-terminal voltage stabilizer | |
| CN214308851U (en) | Multifunctional detection bridge circuit, probe and sensor | |
| CN217637711U (en) | Circuit for measuring internal working temperature of protective memory | |
| CN214893744U (en) | Temperature acquisition circuit capable of realizing wide-range high precision | |
| CN218885146U (en) | Temperature detection circuit with diagnosis function | |
| CN220107955U (en) | Filtering acquisition circuit of dissolved oxygen meter | |
| CN220626617U (en) | Power supply test load board card | |
| CN211720534U (en) | Comprehensive tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |