CN220232274U - Starting circuit of CGM transmitter - Google Patents
Starting circuit of CGM transmitter Download PDFInfo
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- CN220232274U CN220232274U CN202320841785.XU CN202320841785U CN220232274U CN 220232274 U CN220232274 U CN 220232274U CN 202320841785 U CN202320841785 U CN 202320841785U CN 220232274 U CN220232274 U CN 220232274U
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- 239000002245 particle Substances 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000010876 biochemical test Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Keying Circuit Devices (AREA)
Abstract
The utility model discloses a starting circuit of a CGM transmitter, which comprises a power supply and a power supply management circuit, wherein the positive electrode and the negative electrode of the power supply are respectively connected with the positive end and the negative end of the power supply management circuit; the power management circuit comprises an MCU, a signal processing module and a sensor; a trigger switch is arranged between the MCU and the sensor and between the MCU and the sensor, and the trigger switch is used for switching on the power management circuit; the sensor is provided with a contact P1 and a contact P2, wherein the contact P1 and the contact P2 are mutually independent and unconnected contacts; the trigger switch is arranged between the contact P1 and the contact P2. The trigger switch is arranged to automatically realize the starting of the circuit, so that the problem of electricity consumption before starting the transmitter for use is solved.
Description
Technical Field
The utility model relates to the technical field of transmitters, in particular to a starting circuit of a CGM transmitter.
Background
Currently, there are basically two types of schemes for controlling power on: firstly, a physical switch is adopted, and the power supply of the transmitter is connected in a pressing or stress releasing mode; and secondly, the MCU (embedded single chip microcomputer) adopts a low-power consumption standby mode, and an electric pulse is generated by pressing by means of external force when the sensor is implanted to activate the MCU to enter a working mode.
The first method works as shown in fig. 1, and fig. 1 is a schematic diagram of a physical switching scheme. The working process is that a lockable physical mechanical switch SW (the switch may be a spring piece or a magnetic material) is arranged in the transmitter, and when the button of the implanter is pressed in, the switch SW is pressed (or the switch SW is turned on by using the magnetic switch), so that the power supply is connected into the MCU and the signal processing part to start working.
The working principle of the second method is shown in fig. 2, fig. 2 is a schematic diagram adopting a trigger switch scheme, the working principle is that after the transmitter is assembled, a power supply (battery) is connected to an MCU and a signal processing part to start working, S1 and S2 are IO ports in the diagram, S1 and S2 are respectively set to be high and low levels when the MCU is initialized, P1 and P2 are two contacts (or 2 bonding pads connected together) on a sensor, when the sensor is not connected, P1 and P2 are not connected with the S1 and S2, an MCU port line does not trigger a starting signal, the MCU is not activated, and the MCU enters an ultra-low power consumption standby mode. When the sensor is accessed, S1 and S2 are connected together through contacts P1 and P2, so that an activation signal is generated, the MCU is awakened, the operation mode is entered, and the sensor signal starts to be processed.
The existing biochemical test paper emitter (hereinafter referred to as emitter) has the problem of starting up. The emitter is limited by volume and is powered by a small-volume low-energy lithium battery, the energy of the lithium battery is about 30mAh, and the emitter needs to be supported for continuous use for 2 weeks, namely 14 days after being worn, so that how to reduce the energy consumption of the emitter is important.
The reduction of the energy consumption of the transmitter is usually performed in two ways, namely, the reduction of the working current and the control of the standby power consumption before use.
The utility model solves the problem of electricity consumption before starting up the transmitter, thereby solving the problems of storage time and storage environment requirement of the transmitter.
Disclosure of Invention
The utility model aims to provide a starting circuit of a CGM transmitter, which automatically realizes the starting of the circuit by setting a trigger switch and solves the problem of electricity consumption before the transmitter is started and used.
In order to achieve the above object, the present utility model provides a starting circuit of a CGM transmitter, the starting circuit comprising a power source and a power source management circuit, wherein the positive and negative poles of the power source are respectively connected with the positive and negative ends of the power source management circuit;
the power management circuit comprises an MCU, a signal processing module and a sensor;
a trigger switch is arranged between the MCU and the sensor and between the MCU and the sensor, and the trigger switch is used for switching on the power management circuit;
the sensor is provided with a contact P1 and a contact P2, wherein the contact P1 and the contact P2 are mutually independent and unconnected contacts;
the trigger switch is arranged between the contact P1 and the contact P2.
Further, the trigger switch is conductive rubber particles and is arranged on the sensor assembly;
wherein, when the trigger switch contacts the contact P1 and the contact P2, the power management circuit is conducted.
Further, the trigger switch is of a prefabricated spring plate type, and a spring piece is welded at the contact P1 or the contact P2;
when the power management circuit does not work, the spring piece is not connected with the other contact; pressing the trigger switch to enable the spring piece to be in contact with the other contact, and conducting the power management circuit.
Further, the positive electrode of the power supply is respectively connected with the MCU, the signal processing module and the contact P1, and the negative electrode of the power supply is connected with the contact P2 through the pull-down resistor Rs and the MCU and the signal processing module.
Furthermore, the EN end of the MCU and the signal processing module is connected to the contact P2.
Further, when the trigger switch is connected with the MCU, the signal processing module and the sensor, the EN end of the MCU and the signal processing module is at a high level, so that the power management circuit is connected.
Further, the contact point P1, the contact point P2, the CE end, the RE end and the WE end are integrated in the sensor module, and the CE end, the RE end and the WE end are respectively connected with the MCU and the signal processing module.
The utility model has the technical effects and advantages that: 1. the transmitter has no standby mode, and when the transmitter is not used, no power is connected to the transmitter, so that the power consumption is zero, and the storage time of the product can be greatly prolonged;
2. the trigger switch has a simple and reliable structure and extremely low energy consumption (nA level, can be ignored), and can complete the starting action by a small conductive rubber particle without the traditional reed connection, thereby having small volume and low energy consumption and being not influenced by vibration;
3. the anti-static electromagnetic interference capability is strong, and as the transmitter is not electrified when not in use, the MCU does not work, compared with the MCU working in a sleep mode, the anti-static electromagnetic interference device can avoid the phenomena of unexpected starting or program run-off and the like caused by the influences of static electricity, electromagnetic interference and the like when the product is stored, can improve the reliability of the product, and reduces the requirement on the environment when the product is stored;
4. the structure and the material are single and cheap, so that the environment is not polluted, and in particular, unnecessary side effects (such as possible magnetization of the mechanical watch) are not caused to a user compared with the magnetic material.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
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 diagram of the operation of a physical switch of the prior art;
FIG. 2 is a schematic diagram of the operation of a trigger switch according to the prior art;
fig. 3 is a diagram showing a starting circuit structure of a CGM transmitter according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order to solve the defects in the prior art, the utility model discloses a starting circuit of a CGM transmitter, as shown in figure 3, which comprises a power supply and a power supply management circuit, wherein the positive and negative poles of the power supply are respectively connected with the positive and negative ends of the power supply management circuit;
the power management circuit comprises an MCU, a signal processing module and a sensor;
a trigger switch SP is arranged between the MCU and the signal processing module and the sensor, and the trigger switch SP is used for switching on the power management circuit (namely the MCU and the signal processing module and the sensor part), so that the power of the transmitter is conducted;
the sensor is provided with a contact P1 and a contact P2, and the trigger switch SP is arranged between the contact P1 and the contact P2; the contact P1 and the contact P2 are independent and unconnected contacts.
In some embodiments, the trigger switch SP is a conductive rubber particle mounted on the sensor assembly; wherein, when the power management circuit is not working, the trigger switch is not contacted with the contact P1 and the contact P2; when the trigger switch is in contact with the contact P1 and the contact P2, the power management circuit is conducted, and the transmitter is started, so that the transmitter always operates.
In some specific embodiments, the trigger switch is a prefabricated spring plate type, and a spring piece is welded at the contact P1 or the contact P2;
when the power management circuit does not work, the spring piece is not connected with the other contact; the trigger switch is pressed into the sensor, so that the spring piece is pressed to be contacted with the other contact to complete the trigger function, and the power management circuit is conducted.
In some specific embodiments, the power supply anode is connected to the MCU and the signal processing module and the contact P1, respectively, and the power supply cathode is connected to the contact P2 through the pull-down resistor Rs and the MCU and the signal processing module.
The trigger switch is connected with the MCU, the signal processing module and the sensor, the EN ends of the MCU and the signal processing module are in high level, so that the power management circuit is connected, and the transmitter is electrified to start working; once the transmitter is powered on, its on state is independent of the contacts P1, P2 and the trigger switch.
In some embodiments, the negative power supply is connected to the MCU and the EN terminal of the signal processing module through a pull-down resistor Rs.
In some specific embodiments, the MCU and the signal processing module are provided with an IO end connected with an EN end; the continuous operation of the transmitter can be ensured, and when the transmitter operates, the IO terminal is set to be high level. Thus, even if the SP conductive rubber is poorly connected with the P1 and P2 contacts, the EN terminal is ensured to be in a high level, and the generator can continuously work.
In some specific embodiments, the contact P1, the contact P2, the CE end, the RE end, and the WE end are integrated in a sensor module, and the CE end, the RE end, and the WE end are respectively connected with the MCU and the signal processing module.
In some specific embodiments, the power source is a lithium-manganese battery.
The specific structure of the embodiment of the trigger switch being conductive rubber particles is as follows:
the power supply part is mainly a lithium-manganese battery, and the anode and the cathode of the power supply are respectively connected with the anode and the cathode of the power supply management circuit; specifically, the positive electrode of the power supply is respectively connected with the MCU and the contact P1 of the signal processing module and the sensor, and the negative electrode of the power supply is connected with the EN ends of the MCU and the signal processing module through a pull-down resistor Rs in the MCU and the signal processing module;
the EN end of the MCU and the signal processing module is the enabling of the power management circuit of the transmitter, when the EN end is in a high level, the power of the transmitter is turned on, and when the EN end is in a low level, the power is turned off.
The contacts P1 and P2 are two independent and unconnected contacts on the sensor package in the emitter board, and the contacts P2 are connected with the MCU and the EN end of the signal processing module; the trigger switch SP is a conductive rubber particle located on the sensor assembly, and the trigger switch SP is disposed between the contact P1 and the contact P2.
When the sensor is not in use, the trigger switch SP is disconnected from the contacts P1 and P2; initially, trigger switch SP is not in contact with contacts P1 and P2, EN is low, and the transmitter power management circuit is off and not operating, at which time the transmitter assembly is not powered and therefore no power is consumed.
When the trigger switch SP is pressed down and used by a user, the conductive particles of the trigger switch SP are contacted with the contacts P1 and P2, and the voltage at the EN terminal is as follows:
in the above formula, ven is EN terminal voltage, rsp is trigger switch SP conductive rubber resistance, rs is pull-down resistance, and Vb is battery voltage.
The resistance Rsp of the general conductive rubber is 10k omega to 100k omega, and the value of Rs is larger than 3M omega, so Ven is definitely larger than 80% vb, therefore, the EN end can be considered to be high level when the trigger switch SP is pressed down, and the power management circuit is started at the moment, and the transmitter is powered on to start working.
In order to ensure continuous operation of the transmitter, one IO of the MCU and the signal processing module in the circuit is connected to the EN terminal, and when the transmitter operates, the IO terminal is set to be high level. Thus, even if the conductive rubber of the trigger switch SP is poorly connected to the contacts P1 and P2, the EN terminal is ensured to be high, so that the transmitter can continuously operate.
The transmitter in the utility model has no standby mode, and when the transmitter is not used, no power is connected to the transmitter, the power consumption is zero, and the storage time of the product can be greatly prolonged; the trigger switch has a simple and reliable structure and extremely low energy consumption (nA level, can be ignored), and can complete the starting action by a small conductive rubber particle without the traditional reed connection, thereby having small volume and low energy consumption and being not influenced by vibration; the anti-static electromagnetic interference capability is strong, and because the transmitter is not electrified when not in use, the MCU does not work, compared with the MCU working in a sleep mode, the anti-static electromagnetic interference device can avoid the phenomena of unexpected starting or program running and the like caused by the influences of static electricity, electromagnetic interference and the like when the product is stored, can improve the reliability of the product, and reduces the requirement on the environment when the product is stored.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
- The starting circuit of the CGM transmitter is characterized by comprising a power supply and a power supply management circuit, wherein the positive electrode and the negative electrode of the power supply are respectively connected with the positive end and the negative end of the power supply management circuit;the power management circuit comprises an MCU, a signal processing module and a sensor;a trigger switch is arranged between the MCU and the sensor and between the MCU and the sensor, and the trigger switch is used for switching on the power management circuit;the sensor is provided with a contact P1 and a contact P2, wherein the contact P1 and the contact P2 are mutually independent and unconnected contacts;the trigger switch is arranged between the contact P1 and the contact P2.
- 2. The activation circuit of a CGM transmitter according to claim 1, wherein,the trigger switch is conductive rubber particles and is arranged on the sensor assembly;wherein, when the trigger switch contacts the contact P1 and the contact P2, the power management circuit is conducted.
- 3. The activation circuit of a CGM transmitter according to claim 1, wherein,the trigger switch is of a prefabricated spring plate type, and a spring piece is welded at the contact P1 or the contact P2;when the power management circuit does not work, the spring piece is not connected with the other contact; pressing the trigger switch to enable the spring piece to be in contact with the other contact, and conducting the power management circuit.
- 4. The activation circuit of a CGM transmitter according to claim 2 or 3, wherein,the power supply anode is respectively connected with the MCU and the signal processing module and the contact P1, and the power supply cathode is connected with the contact P2 through the pull-down resistor Rs and the MCU and the signal processing module.
- 5. The activation circuit of a CGM transmitter according to claim 4, wherein,and the EN ends of the MCU and the signal processing module are connected with the contact P2.
- 6. The activation circuit of a CGM transmitter according to claim 5, wherein,when the trigger switch is connected with the MCU, the signal processing module and the sensor, the EN ends of the MCU and the signal processing module are in high level, so that the power management circuit is connected.
- 7. The activation circuit of a CGM transmitter according to claim 1 or 2, wherein,the contact P1, the contact P2, the CE end, the RE end and the WE end are integrated in the sensor module, and the CE end, the RE end and the WE end are respectively connected with the MCU and the signal processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320841785.XU CN220232274U (en) | 2023-04-14 | 2023-04-14 | Starting circuit of CGM transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320841785.XU CN220232274U (en) | 2023-04-14 | 2023-04-14 | Starting circuit of CGM transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220232274U true CN220232274U (en) | 2023-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320841785.XU Active CN220232274U (en) | 2023-04-14 | 2023-04-14 | Starting circuit of CGM transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220232274U (en) |
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2023
- 2023-04-14 CN CN202320841785.XU patent/CN220232274U/en active Active
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