CN212627298U - Portable on-vehicle smart machine outage control circuit - Google Patents
Portable on-vehicle smart machine outage control circuit Download PDFInfo
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- CN212627298U CN212627298U CN202021408364.0U CN202021408364U CN212627298U CN 212627298 U CN212627298 U CN 212627298U CN 202021408364 U CN202021408364 U CN 202021408364U CN 212627298 U CN212627298 U CN 212627298U
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Abstract
The utility model discloses a portable on-vehicle smart machine power-off control circuit, a portable on-vehicle smart machine power-off control circuit includes: the power supply comprises a control module, a power supply input module, an SIM card seat module, a power-off control module and a lithium battery; the SIM card seat module is respectively and electrically connected with the control module and the power-off control module, and the power-off control module is respectively and electrically connected with the power input module and the lithium battery; the lithium battery is used for being electrically connected with the vehicle-mounted intelligent device. The utility model discloses can be through the outage control of plug SIM cassette in order to realize the redundant lithium cell of on-vehicle smart machine, the simple operation, circuit structure is simple, low cost, and the price/performance ratio is very high.
Description
Technical Field
The utility model relates to a vehicle mounted power control technical field especially relates to a portable vehicle mounted intelligent equipment power-off control circuit.
Background
In order to be able to work after the power supply of the automobile is cut off, a plurality of vehicle-mounted products can use lithium batteries with relative capacities built in the vehicle-mounted intelligent equipment as redundant power supplies. Because the vehicle-mounted intelligent equipment still needs to report the state information of the vehicle after the power supply is cut off, a redundant power supply is very necessary. However, the vehicle-mounted product cannot add a switch of a built-in battery due to the structure, so that the device cannot be powered off. When the power supply of the automobile is disconnected, the vehicle-mounted intelligent equipment still maintains working through the redundant power supply until the lithium battery is dead. In addition, the failure of the redundant power supply to power off in time can bring many inconveniences to production, sales and after-sales services, including: because the built-in battery works all the time, the built-in battery is exhausted when the built-in battery is sold to a client for demonstration, so that the functions of the vehicle-mounted intelligent equipment cannot be displayed, and the sale is influenced; or when after-sale service is carried out on site, if the vehicle-mounted intelligent equipment needs to be upgraded, the operation can be carried out only after the built-in battery of the equipment is dead, and the customer experience is reduced to a great extent due to the defects. Therefore, the invention provides a power-off control circuit for portable vehicle-mounted intelligent equipment, which is a problem to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a portable on-vehicle smart machine power-off control circuit is provided.
The utility model discloses a portable vehicle-mounted intelligent equipment power-off control circuit, which comprises a control module, a power input module, a SIM card seat module, a power-off control module and a lithium battery; the SIM card seat module is respectively and electrically connected with the control module and the power-off control module, and the power-off control module is respectively and electrically connected with the power input module and the lithium battery; the lithium battery is used for being electrically connected with the vehicle-mounted intelligent device.
Preferably, the power-off control module comprises a first PMOS transistor, a first triode and a first resistor; the grid electrode of the first PMOS tube is electrically connected with the collector electrode of the first triode, the source electrode of the first PMOS tube is electrically connected with the power input module, the drain electrode of the first PMOS tube is electrically connected with the lithium battery, the base electrode of the first triode is electrically connected with the first end of the first resistor and the enabling output end of the SIM card seat module, the second end of the first resistor is electrically connected with the control module, and the emitting electrode of the first triode is grounded.
Preferably, the power-off control module further comprises a second resistor; the first end of the second resistor is electrically connected with the source electrode of the first PMOS tube, and the second end of the second resistor is electrically connected with the grid electrode of the first PMOS tube.
Preferably, the SIM card holder module includes a SIM card holder and a third resistor; the data end of the SIM card seat, the clock end of the SIM card seat, the reset end of the SIM card seat and the power supply VDD end of the SIM card seat are electrically connected with the control module, and the enabling output end of the SIM card seat is electrically connected with the power-off control module through the third resistor.
Preferably, the SIM card holder module further includes a first diode, a second diode, a third diode and a fourth diode; the first end of the first diode is electrically connected with the data end of the SIM card holder, the first end of the second diode is electrically connected with the clock end of the SIM card holder, the first end of the third diode is electrically connected with the reset end of the SIM card holder, the first end of the fourth diode is electrically connected with the power supply VDD end of the SIM card holder, and the second end of the first diode, the second end of the second diode, the second end of the third diode and the second end of the fourth diode are grounded.
Preferably, the power input module provides electrical energy input through a generator.
The utility model discloses a portable on-vehicle smart machine power-off control circuit has following beneficial effect, the utility model discloses a portable on-vehicle smart machine power-off control circuit includes: the power supply comprises a control module, a power supply input module, an SIM card seat module, a power-off control module and a lithium battery; the SIM card seat module is respectively and electrically connected with the control module and the power-off control module, and the power-off control module is respectively and electrically connected with the power input module and the lithium battery; the lithium battery is used for being electrically connected with the vehicle-mounted intelligent device. After the power supply input module is disconnected, inserting an SIM card into an SIM card seat, wherein an enabling output end of the SIM card seat module outputs a high level, the power-off control module is conducted, and the lithium battery supplies redundant power to the vehicle-mounted intelligent equipment; when the SIM card in the SIM card seat is pulled out, the enabling output end of the SIM card seat module outputs a low level, the power-off control module is disconnected, and the lithium battery stops performing redundant power supply on the vehicle-mounted intelligent equipment. The utility model discloses can be through the outage control of plug SIM cassette in order to realize the redundant lithium cell of on-vehicle smart machine, the simple operation, circuit structure is simple, low cost, and the price/performance ratio is very high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the drawings:
fig. 1 is a schematic block diagram of a portable vehicle-mounted intelligent device power-off control circuit according to a preferred embodiment of the present invention;
fig. 2 is a circuit diagram of a power-off control module of a power-off control circuit of a portable vehicle-mounted intelligent device according to a preferred embodiment of the present invention;
fig. 3 is a circuit diagram of a SIM card holder module of a power-off control circuit of a portable vehicle-mounted intelligent device according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of protection of the present invention.
Fig. 1 shows a preferred embodiment of the present invention, which includes a control module 1, a power input module 2, an SIM card holder module 3, a power-off control module 4 and a lithium battery 5; the SIM card seat module 3 is respectively and electrically connected with the control module 1 and the power-off control module 4, and the power-off control module 4 is respectively and electrically connected with the power input module 2 and the lithium battery 5; the lithium battery 5 is used for being electrically connected with the vehicle-mounted intelligent device. After the power input module 2 is disconnected, inserting an SIM card into an SIM card seat, outputting a high level by an enable output end of the SIM card seat module 3, switching on the power-off control module 4, and performing redundant power supply on the vehicle-mounted intelligent equipment by the lithium battery 5; when the SIM card in the SIM card seat is pulled out, the enabling output end of the SIM card seat module 3 outputs a low level, the power-off control module 4 is disconnected, and the lithium battery 5 stops performing redundant power supply on the vehicle-mounted intelligent equipment. The utility model discloses can be through the outage control of plug SIM cassette in order to realize the redundant lithium cell of on-vehicle smart machine, the simple operation, circuit structure is simple, low cost, and the price/performance ratio is very high.
Preferably, referring to fig. 2, the power-off control module 4 includes that the power-off control module 4 includes a first PMOS transistor Q204, a first triode Q205 and a first resistor R222; the gate of the first PMOS transistor Q204 is electrically connected to the collector of the first triode Q205, the source of the first PMOS transistor Q204 is electrically connected to the power input module 2, the drain of the first PMOS transistor Q204 is electrically connected to the lithium battery 5, the base of the first triode Q205 is electrically connected to the first end of the first resistor R222 and the enable output terminal BATT _ EN of the SIM card holder module 3, the second end of the first resistor R222 is electrically connected to the control module 1, and the emitter of the first triode Q205 is grounded. It can be understood that, in this embodiment, the enable output terminal BATT _ EN of the SIM card holder module is connected to the base of the first transistor Q205, and the first resistor R222 is a pull-up resistor of the base of the first transistor Q205. After an SIM card in the SIM card holder module is inserted, an enable output terminal BATT _ EN of the SIM card holder module is suspended, a base electrode of the first triode Q205 is at a high level, a collector electrode and an emitter electrode of the first triode Q205 are conducted, a grid electrode of the first PMOS tube Q204 is pulled down, and the voltage is changed into 0V, so that the first PMOS tube Q204 controls the lithium battery to output the voltage; when the SIM card in the SIM card holder module is pulled out, the enable output terminal BATT _ EN of the SIM card holder module is grounded, the base electrode of the first triode Q205 is at a low level, the collector electrode and the emitter electrode of the first triode are disconnected, the grid electrode of the first PMOS tube Q204 is at a high level, and the first PMOS tube Q204 controls the lithium battery to stop outputting voltage. Therefore, the power-off control of the redundant lithium battery of the vehicle-mounted intelligent device is realized through plugging the SIM card seat, and the operation is convenient and fast.
Preferably, the power-off control module 4 further comprises a second resistor R221; a first end of the second resistor R221 is electrically connected to the source of the first PMOS transistor Q204, and a second end of the second resistor R221 is electrically connected to the gate of the first PMOS transistor Q204. It can be understood that, in this embodiment, the second resistor R221 is used to prevent the high voltage across the source and the gate of the first PMOS transistor Q204 from causing the first PMOS transistor to malfunction, so as to improve the stability of signal control.
Preferably, referring to fig. 3, the SIM card socket module 3 includes a SIM card socket J400 and a third resistor R407; the DATA end USIM DATA1 of the SIM card holder J400, the clock end USIM CLK1 of the SIM card holder J400, the reset end USIM RST1 of the SIM card holder J400, and the power supply VDD end USIM VDD of the SIM card holder J400 are all electrically connected to the control module 1, and the enable output terminal BATT _ EN of the SIM card holder J400 is electrically connected to the power-off control module 4 through the third resistor R407. It can be understood that the third resistor R407 is used for protecting the enable output terminal BATT _ EN of the SIM card holder J400.
Preferably, the SIM card holder module 3 further comprises a first diode ESD400, a second diode ESD401, a third diode ESD402 and a fourth diode ESD 403; the first end of the first diode ESD401 is electrically connected with the DATA end USIM DATA1 of the SIM card holder J400, the first end of the second diode ESD401 is electrically connected with the clock end USIM CLK1 of the SIM card holder J400, the first end of the third diode ESD402 is electrically connected with the reset end USIM RST1 of the SIM card holder J400, the first end of the fourth diode ESD403 is electrically connected with the VDD end USIM VDD of the SIM card holder J400, and the second end of the first diode ESD400, the second end of the second diode ESD401, the second end of the third diode ESD402, and the second end of the fourth diode ESD403 are grounded. It can be understood that, in the present embodiment, the first diode ESD400, the second diode ESD401, the third diode ESD402 and the fourth diode ESD403 ensure the reliability of signal transmission of the SIM card socket module.
Preferably, the power input module 2 provides power input through a generator.
To sum up, the utility model discloses a portable on-vehicle smart machine power-off control circuit includes: the system comprises a control module 1, a power input module 2, an SIM card seat module 3, a power-off control module 4 and a lithium battery 5; the SIM card seat module 3 is respectively and electrically connected with the control module 1 and the power-off control module 4, and the power-off control module 4 is respectively and electrically connected with the power input module 2 and the lithium battery 5; the lithium battery 5 is used for being electrically connected with the vehicle-mounted intelligent device. After the power input module 2 is disconnected, inserting an SIM card into an SIM card seat, outputting a high level by an enable output end of the SIM card seat module 3, switching on the power-off control module 4, and performing redundant power supply on the vehicle-mounted intelligent equipment by the lithium battery 5; when the SIM card in the SIM card seat is pulled out, the enabling output end of the SIM card seat module 3 outputs a low level, the power-off control module 4 is disconnected, and the lithium battery 5 stops performing redundant power supply on the vehicle-mounted intelligent equipment. The utility model discloses can be through the outage control of plug SIM cassette in order to realize the redundant lithium cell of on-vehicle smart machine, the simple operation, circuit structure is simple, low cost, and the price/performance ratio is very high.
The portable vehicle-mounted intelligent device power-off control circuit provided by the utility model is introduced in detail, and the principle and the implementation mode of the utility model are explained by applying specific examples, and the explanation of the above embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, to the general technical personnel in this field, according to the utility model discloses an idea, all can have the change part on concrete implementation and application scope, to sum up, this description content only is the utility model discloses an embodiment, does not consequently restrict the utility model discloses a patent scope, all utilize the equivalent structure or the equivalent flow transform that the content of the description and the attached drawing did, or directly or indirectly use in other relevant technical fields, all the same reason is included in the utility model discloses a patent protection scope. And should not be construed as limiting the invention.
Claims (6)
1. The utility model provides a portable on-vehicle smart machine outage control circuit which characterized in that includes: the power supply comprises a control module, a power supply input module, an SIM card seat module, a power-off control module and a lithium battery; the SIM card seat module is respectively and electrically connected with the control module and the power-off control module, and the power-off control module is respectively and electrically connected with the power input module and the lithium battery; the lithium battery is used for being electrically connected with the vehicle-mounted intelligent device.
2. The portable vehicle-mounted intelligent device power-off control circuit according to claim 1, wherein the power-off control module comprises a first PMOS (P-channel metal oxide semiconductor) tube, a first triode and a first resistor; the grid electrode of the first PMOS tube is electrically connected with the collector electrode of the first triode, the source electrode of the first PMOS tube is electrically connected with the power input module, the drain electrode of the first PMOS tube is electrically connected with the lithium battery, the base electrode of the first triode is electrically connected with the first end of the first resistor and the enabling output end of the SIM card seat module, the second end of the first resistor is electrically connected with the control module, and the emitting electrode of the first triode is grounded.
3. The portable vehicle-mounted intelligent device power-off control circuit according to claim 2, wherein the power-off control module further comprises a second resistor; the first end of the second resistor is electrically connected with the source electrode of the first PMOS tube, and the second end of the second resistor is electrically connected with the grid electrode of the first PMOS tube.
4. The power-off control circuit for portable vehicle-mounted intelligent equipment according to claim 1, wherein the SIM card holder module comprises an SIM card holder and a third resistor; the data end of the SIM card seat, the clock end of the SIM card seat, the reset end of the SIM card seat and the power supply VDD end of the SIM card seat are electrically connected with the control module, and the enabling output end of the SIM card seat is electrically connected with the power-off control module through the third resistor.
5. The power-off control circuit for portable vehicle-mounted intelligent equipment according to claim 4, wherein the SIM card holder module further comprises a first diode, a second diode, a third diode and a fourth diode; the first end of the first diode is electrically connected with the data end of the SIM card holder, the first end of the second diode is electrically connected with the clock end of the SIM card holder, the first end of the third diode is electrically connected with the reset end of the SIM card holder, the first end of the fourth diode is electrically connected with the power supply VDD end of the SIM card holder, and the second end of the first diode, the second end of the second diode, the second end of the third diode and the second end of the fourth diode are grounded.
6. The power-off control circuit for the portable vehicle-mounted intelligent device according to any one of claims 1-5, wherein the power input module provides power input through a generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021408364.0U CN212627298U (en) | 2020-07-16 | 2020-07-16 | Portable on-vehicle smart machine outage control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021408364.0U CN212627298U (en) | 2020-07-16 | 2020-07-16 | Portable on-vehicle smart machine outage control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN212627298U true CN212627298U (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021408364.0U Active CN212627298U (en) | 2020-07-16 | 2020-07-16 | Portable on-vehicle smart machine outage control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN212627298U (en) |
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- 2020-07-16 CN CN202021408364.0U patent/CN212627298U/en active Active
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