CN217212962U - Vehicle load state detection device - Google Patents
Vehicle load state detection device Download PDFInfo
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- CN217212962U CN217212962U CN202220372587.9U CN202220372587U CN217212962U CN 217212962 U CN217212962 U CN 217212962U CN 202220372587 U CN202220372587 U CN 202220372587U CN 217212962 U CN217212962 U CN 217212962U
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Abstract
The utility model discloses a vehicle load condition detection device, include: the device comprises a power module, a high-side chip and a main control chip; the power supply output end of the power supply module is connected with the power supply input end of the high-side chip, the control output end of the main control chip is connected with the control input end of the high-side chip, the voltage output end of the high-side chip is connected with the voltage input end of the main control chip, and the output end of the high-side chip is connected with a vehicle load; the main control chip is used for receiving the voltage value output by the high-side chip and outputting the state of the vehicle load. The load state of the vehicle is monitored in real time, and user experience is improved.
Description
Technical Field
The embodiment of the utility model provides a relate to vehicle technical field, especially relate to a vehicle load state detection device.
Background
With the development of society, the living standard of people improves, and the vehicle more and more becomes the essential instrument of riding instead of walk in people's life. With the development of technology, vehicles are more and more automated and intelligent. In the prior art, the load of the vehicle (for example, a turn signal lamp, a rear view mirror, etc.) is generally controlled by a high-side chip, but the state of the load of the vehicle cannot be monitored in real time.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vehicle load state detection device to realize the state of the load of real time monitoring vehicle, promote user experience.
In order to achieve the above object, the present invention provides a vehicle load state detecting device, including: the device comprises a power module, a high-side chip and a main control chip;
the power supply output end of the power supply module is connected with the power supply input end of the high-side chip, the control output end of the main control chip is connected with the control input end of the high-side chip, the voltage output end of the high-side chip is connected with the voltage input end of the main control chip, and the output end of the high-side chip is connected with a vehicle load; the main control chip is used for receiving the voltage value output by the high-side chip and outputting the state of the vehicle load.
In order to achieve the above object, the utility model discloses another aspect provides a vehicle load condition detection device, include: the device comprises a power module, a high-side chip, a main control chip and a current detection chip;
the power module's power output end with the power input end of high limit chip is connected, main control chip's control output end with the control input end of high limit chip is connected, the output of high limit chip with the first end of current detection chip is connected, the second end of current detection chip with the vehicle load is connected, the voltage output end of current detection chip with main control chip's voltage input end is connected, main control chip is used for receiving the voltage value of current detection chip output, and the output the state of vehicle load.
Optionally, the high-side chip is a BTS50055 high-side chip.
Optionally, the current detection chip is a TLI4971 current detection chip.
Optionally, the main control chip includes a comparator, and the comparator is a voltage zero-crossing comparator.
Optionally, the vehicle load state detection device further includes a power protection circuit, where the power protection circuit includes a capacitor, a PMOS transistor, a first resistor, a first diode, and a second diode, one end of the capacitor is connected to the power output end of the power module and one end of the PMOS transistor, respectively, and the other end of the capacitor is grounded; the other end of the PMOS tube is connected with the power supply input end of the high-side chip, the control end of the PMOS tube is connected with one end of the first resistor, and the other end of the first resistor is grounded; the anode of the first diode is connected with the control end of the PMOS tube, the cathode of the first diode is connected with the power input end of the high-side chip, the anode of the second diode is grounded, and the cathode of the second diode is connected with the power input end of the high-side chip.
Optionally, the vehicle load state detection device further includes: and one end of the second resistor is connected with the output end of the high-side chip, and the other end of the second resistor is connected with the vehicle load.
Optionally, the vehicle load state detection device further includes: the anode of the third diode is connected with the control output end of the main control chip, the cathode of the third diode is connected with one end of the third resistor, and the other end of the third resistor is connected with the control input end of the high-side chip.
Optionally, the vehicle load state detection device further includes: the cathode of the fourth diode is connected with the voltage input end of the main control chip, the anode of the fourth diode is connected with one end of the fourth resistor, and one end of the fourth resistor is connected with the voltage output end of the high-side chip.
Optionally, the vehicle load state detection device further includes: the cathode of the fifth diode is connected with the voltage input end of the main control chip, the anode of the fifth diode is connected with one end of the fifth resistor, and one end of the fifth resistor is connected with the voltage output end of the current detection chip.
According to the utility model discloses vehicle load condition detection device that provides, include: the device comprises a power module, a high-side chip and a main control chip; the power supply output end of the power supply module is connected with the power supply input end of the high-side chip, the control output end of the main control chip is connected with the control input end of the high-side chip, the voltage output end of the high-side chip is connected with the voltage input end of the main control chip, and the output end of the high-side chip is connected with a vehicle load; the main control chip is used for receiving the voltage value output by the high-side chip and outputting the state of the vehicle load. The load state of the vehicle is monitored in real time, and user experience is improved.
Drawings
Fig. 1 is a schematic block diagram of a vehicle load state detection device according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a vehicle load state detection apparatus according to another embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a vehicle load state detection device according to an embodiment of the present invention;
fig. 4 is a schematic block diagram of a vehicle load state detection device according to still another embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a vehicle load state detection device according to still another embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a block diagram schematically illustrating a vehicle load state detection apparatus according to an embodiment of the present invention. As shown in fig. 1, the vehicle load state detection apparatus 100 includes: a power module 101, a high-side chip 102 and a main control chip 103;
a power output end of the power module 101 is connected with a power input end of the high-side chip 102, a control output end of the main control chip 103 is connected with a control input end of the high-side chip 102, a voltage output end of the high-side chip 102 is connected with a voltage input end of the main control chip 103, and an output end of the high-side chip 102 is connected with a vehicle load 104; the main control chip 103 is configured to receive the voltage value output by the high-side chip 102, and output a state of the vehicle load 104.
The power module 101 supplies power to the high-side chip 102, and the main control chip 103 in this embodiment may have a built-in power supply, and does not need the power module 101 to supply power. In other embodiments, if the main control chip 103 has no internal power source, the power module 101 may be further connected to the main control chip 103 to supply power to the main control chip 103.
The high-side chip 102 is an electronic relay, and the model of the high-side chip 102 may be a BTS50055 high-side chip. It should be noted that the high-side chip 102 may not only realize the function of an electronic relay, that is, the main control chip 103 may output a signal through a control output terminal, and the control input terminal of the high-side chip 102 receives the signal, so as to control the high-side chip 102 to be turned on or off, thereby controlling the vehicle load 104 connected to the high-side chip 102 to be turned on or off. In addition, the high-side chip 102 further has a function of detecting current, so that a voltage output end of the high-side chip 102 can be connected with a voltage input port of the main control chip 103, after a voltage value is input to the voltage input port of the main control chip 103, the main control chip 103 compares the received voltage value with a preset voltage value (preferably zero) in the main control chip 103, and when the voltage value is equal to the preset voltage value, it is determined that the vehicle load 104 is abnormal. And when the voltage value is larger than the preset value, judging that the vehicle load 104 is in a normal state. In other embodiments, the main control chip 103 may convert the received voltage value into a current value, and compare the current value with a preset current value pre-stored in the main control chip 103, which is not limited in this disclosure. When the current value is equal to the current preset value (zero), it is determined that the vehicle load 104 is abnormal in state. And when the voltage value is larger than the current preset value, judging that the vehicle load 104 is in a normal state.
Further, the state of the vehicle load 104 is detected by using the current detection function of the high-side chip 102.
The control output end of the main control chip 103 is a GPIO port of the main control chip 103, and the voltage input end of the main control chip 103 is an ADC1 port of the main control chip 103.
Alternatively, fig. 2 is a schematic block diagram of a vehicle load state detection device according to another embodiment of the present invention; as shown in fig. 2, the main control chip 103 includes a comparator 105, and the comparator 105 is a zero-crossing voltage comparator. That is, the first input terminal of the voltage zero-crossing comparator can input the voltage value received by the main control chip 103, the second input terminal can input the preset value, and the output terminal outputs the status signal of the vehicle load 104. That is, when the signal of the first input terminal is the same as the signal of the second input terminal, an abnormal state signal of the vehicle load 104 is output, and when it is different, a normal state signal of the vehicle load 104 is output. In other embodiments, the comparator 105 may also be a current zero comparator.
Optionally, fig. 3 is a schematic circuit diagram of a vehicle load status detection apparatus according to an embodiment of the present invention; as shown in fig. 3, the vehicle load status detecting apparatus 100 further includes a power protection circuit 106, the power protection circuit 106 includes a capacitor C1, a PMOS transistor 107, a first resistor R1, a first diode D1 and a second diode D2, one end of the capacitor C1 is connected to the power output terminal of the power module 101 and one end of the PMOS transistor 107, and the other end of the capacitor C1 is grounded; the other end of the PMOS transistor 107 is connected to the power input end of the high-side chip 102, the control end of the PMOS transistor 107 is connected to one end of the first resistor R1, and the other end of the first resistor R1 is grounded; the anode of the first diode D1 is connected to the control terminal of the PMOS transistor 107, the cathode of the first diode D1 is connected to the power input terminal of the high-side chip 102, the anode of the second diode D2 is grounded, and the cathode of the second diode D2 is connected to the power input terminal of the high-side chip 102, wherein the second diode D2 is used for overvoltage protection. Therefore, through the setting of the power protection circuit 106, the power module 101 is ensured to output a correct voltage signal to the high-side chip 102, and further, the high-side chip 102 is ensured to normally work.
Optionally, fig. 3 is a schematic circuit diagram of a vehicle load status detecting device according to an embodiment of the present invention; as shown in fig. 3, the vehicle load state detection apparatus 100 further includes: and a second resistor R2, wherein one end of the second resistor R2 is connected to the output end of the high-side chip 102, and the other end is connected to the vehicle load 104. Through the setting of the second resistor R2, the signal of the output of the high-side chip 102 can be input to the vehicle load 104.
Optionally, fig. 3 is a schematic circuit diagram of a vehicle load status detection apparatus according to an embodiment of the present invention; as shown in fig. 3, the vehicle load state detection apparatus 100 further includes: the anode of the third diode D3 is connected with the control output end of the main control chip 103, the cathode of the third diode D3 is connected with one end of the third resistor R3, and the other end of the third resistor R3 is connected with the control input end of the high-side chip 102. Through the arrangement of the third resistor R3 and the third diode D3, the forward circulation of signals is ensured in the signal transmission process of the main control chip 103 to the high-side chip 102.
Optionally, fig. 3 is a schematic circuit diagram of a vehicle load status detecting device according to an embodiment of the present invention; as shown in fig. 3, the vehicle load state detection apparatus 100 further includes: a fourth resistor R4 and a fourth diode D4, a cathode of the fourth diode D4 is connected to the voltage input terminal of the main control chip 103, an anode of the fourth diode D4 is connected to one end of the fourth resistor R4, and one end of the fourth resistor R4 is connected to the voltage output terminal of the high-side chip 102. Through the arrangement of the third resistor R3 and the third diode D3, the forward circulation of signals is ensured in the signal transmission process from the high-side chip 102 to the main control chip 103.
In summary, according to the utility model discloses a vehicle load condition detection device that provides includes: the device comprises a power module, a high-side chip and a main control chip; the power supply output end of the power supply module is connected with the power supply input end of the high-side chip, the control output end of the main control chip is connected with the control input end of the high-side chip, the voltage output end of the high-side chip is connected with the voltage input end of the main control chip, and the output end of the high-side chip is connected with a vehicle load; the main control chip is used for receiving the voltage value output by the high-side chip and outputting the state of the vehicle load. The load state of the vehicle is monitored in real time, and user experience is improved.
Example two
Fig. 4 is a block diagram schematically illustrating a vehicle load state detection apparatus according to still another embodiment of the present invention. As shown in fig. 4, the detecting device 200 includes: the power supply module 201, the high-side chip 202, the main control chip 203 and the current detection chip 204;
the power output end of the power module 201 is connected with the power input end of the high-side chip 202, the control output end of the main control chip 203 is connected with the control input end of the high-side chip 202, the first end of the current detection chip 204 is connected with the output end of the high-side chip 202, the second end of the current detection chip 204 is connected with the vehicle load 205, the voltage output end of the current detection chip 204 is connected with the voltage input end of the main control chip 203, and the main control chip 203 is used for receiving the voltage value output by the current detection chip 204 and outputting the state of the vehicle load 205.
It should be noted that, unlike the previous embodiment in which the current detection chip 204 with higher current detection accuracy is added, in the previous embodiment, although the high-side chip 102 can detect a current, the accuracy of the detected current is low, and the current detection result using the high-side chip 102 has a larger error for a vehicle load requiring high-accuracy current detection, such as a rearview mirror. In addition, the same parts as those in the previous embodiment are not described in detail in this embodiment.
In this embodiment, by adding the current detection chip 204, the main control chip 203 receives the voltage value of the current detection chip 204, the main control chip 203 compares the received voltage value with a preset value (preferably zero) in the main control chip 203, and when the voltage value is equal to the preset value, it is determined that the vehicle load 205 is abnormal in state. And when the voltage value is larger than the preset value, judging that the vehicle load 205 is in a normal state. In other embodiments, the main control chip 204 may convert the voltage value into a current value to be compared with a preset current value pre-stored in the main control chip 204, which is not limited in the present invention.
Optionally, the current detection chip 204 may be the TLI4971 current detection chip 204.
Optionally, fig. 5 is a schematic circuit diagram of a vehicle load state detection device according to still another embodiment of the present invention, as shown in fig. 5, the vehicle load state detection device 200 further includes: the voltage detection circuit comprises a fifth resistor R5 and a fifth diode D5, wherein the cathode of the fifth diode D5 is connected with the voltage input end of the main control chip 203, the anode of the fifth diode D5 is connected with one end of the fifth resistor R5, and one end of the fifth resistor R5 is connected with the voltage output end of the current detection chip 204. Through the arrangement of the fifth resistor R5 and the fifth diode D5, the signal transmission process from the current detection chip 204 to the main control chip 203 is ensured, and the forward direction circulation of the signal is ensured.
It should be noted that, in the actual operation process, the ports of the first voltage input terminal ADC1 and the second voltage input terminal ADC2 may be reserved in the main control chip 203, and a connector connected to the current detection chip 204 may be reserved between the high-side chip 202 and the vehicle load 205. When the vehicle load 205 is a low-precision current (such as a turn signal lamp) requirement, the current detection chip 204 may not be connected to the vehicle load, and the detection may be performed in the manner of the first embodiment. When the vehicle load 205 is required by high current precision (such as a rearview mirror), the current detection chip 204 can be connected, so that the detection device can be suitable for low-precision detection and high-precision detection, and can be directly used without changing a board for different loads.
The second resistor R2 may be reserved, when the current detection chip 204 is not connected, the high-side chip 202 is connected to the vehicle load 104 through the second resistor R2, and when the current detection chip 204 is connected, the high-side chip 202 may not be connected to the vehicle load 104.
In summary, according to the utility model discloses a vehicle load condition detection device that provides includes: the device comprises a power module, a high-side chip, a main control chip and a current detection chip; the power module's power output end with the power input end of high limit chip is connected, main control chip's control output end with the control input end of high limit chip is connected, the output of high limit chip with the first end of current detection chip is connected, the second end of current detection chip with the vehicle load is connected, the voltage output end of current detection chip with main control chip's voltage input end is connected, main control chip is used for receiving the voltage value of current detection chip output, and the output the state of vehicle load. The load state of the vehicle is monitored in real time, and user experience is improved.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A vehicular load state detection device characterized by comprising: the device comprises a power module, a high-side chip and a main control chip;
the power supply output end of the power supply module is connected with the power supply input end of the high-side chip, the control output end of the main control chip is connected with the control input end of the high-side chip, the voltage output end of the high-side chip is connected with the voltage input end of the main control chip, and the output end of the high-side chip is connected with a vehicle load; the main control chip is used for receiving the voltage value output by the high-side chip and outputting the state of the vehicle load.
2. A vehicular load state detection device characterized by comprising: the device comprises a power module, a high-side chip, a main control chip and a current detection chip;
the power module's power output end with the power input end of high limit chip is connected, main control chip's control output end with the control input end of high limit chip is connected, the output of high limit chip with the first end of current detection chip is connected, the second end of current detection chip with vehicle load connects, the voltage output end of current detection chip with main control chip's voltage input end connects, main control chip is used for receiving the magnitude of voltage that current detection chip output, and output vehicle load's state.
3. The vehicular load state detection apparatus according to claim 1 or 2, wherein the high-side chip is a BTS50055 high-side chip.
4. The vehicle load state detection device according to claim 2, wherein the current detection chip is a TLI4971 current detection chip.
5. The vehicle load condition detection device according to claim 1 or 2, wherein the main control chip includes a comparator, and the comparator is a voltage zero-crossing comparator.
6. The vehicle load condition detection apparatus according to claim 1 or 2, further comprising a power supply protection circuit, wherein the power supply protection circuit includes a capacitor, a PMOS transistor, a first resistor, a first diode, and a second diode, one end of the capacitor is connected to the power supply output terminal of the power supply module and one end of the PMOS transistor, respectively, and the other end of the capacitor is grounded; the other end of the PMOS tube is connected with the power supply input end of the high-side chip, the control end of the PMOS tube is connected with one end of the first resistor, and the other end of the first resistor is grounded; the anode of the first diode is connected with the control end of the PMOS tube, the cathode of the first diode is connected with the power input end of the high-side chip, the anode of the second diode is grounded, and the cathode of the second diode is connected with the power input end of the high-side chip.
7. The vehicular load state detection device according to claim 1 or 2, characterized by further comprising: and one end of the second resistor is connected with the output end of the high-side chip, and the other end of the second resistor is connected with the vehicle load.
8. The vehicular load state detection device according to claim 1 or 2, characterized by further comprising: the anode of the third diode is connected with the control output end of the main control chip, the cathode of the third diode is connected with one end of the third resistor, and the other end of the third resistor is connected with the control input end of the high-side chip.
9. The vehicular load state detection device according to claim 1, characterized by further comprising: the cathode of the fourth diode is connected with the voltage input end of the main control chip, the anode of the fourth diode is connected with one end of the fourth resistor, and one end of the fourth resistor is connected with the voltage output end of the high-side chip.
10. The vehicular load state detection device according to claim 2, characterized by further comprising: the negative electrode of the fifth diode is connected with the voltage input end of the main control chip, the positive electrode of the fifth diode is connected with one end of the fifth resistor, and one end of the fifth resistor is connected with the voltage output end of the current detection chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220372587.9U CN217212962U (en) | 2022-02-23 | 2022-02-23 | Vehicle load state detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220372587.9U CN217212962U (en) | 2022-02-23 | 2022-02-23 | Vehicle load state detection device |
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| CN217212962U true CN217212962U (en) | 2022-08-16 |
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| CN202220372587.9U Active CN217212962U (en) | 2022-02-23 | 2022-02-23 | Vehicle load state detection device |
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