CN219347947U

CN219347947U - Circuit and device for simultaneously switching weighing range and waking up method

Info

Publication number: CN219347947U
Application number: CN202320515866.0U
Authority: CN
Inventors: 匙浩; 谢道鹏; 魏波
Original assignee: Chengdu Wanchuang Technology Co ltd
Current assignee: Chengdu Wanchuang Technology Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-07-14
Anticipated expiration: 2033-03-16

Abstract

The utility model relates to the field of quality detection, in particular to a circuit and a device for simultaneously cutting a weighing range and a wake-up method, which comprise an interface J1, an interface J2 and a processor, wherein the wake-up of a weighing meter and entering a preset range are realized under a complex scene by the arrangement of a physical switch, meanwhile, a pin of the interface J2 is powered by direct current to generate a level signal through the circuit connection of the utility model, and then the processor detects the level signal to realize the switching of the weighing meter range, so that the problem of frequent switching of the weighing meter range under certain scenes is solved.

Description

Circuit and device for simultaneously switching weighing range and waking up method

Technical Field

The utility model relates to the field of quality detection, in particular to a circuit and a device for simultaneously switching weighing ranges and awakening methods.

Background

At present, the weighing is more in the field of electronic weighing, wherein the measuring range of a weight sensor is single, and aiming at the characteristic that the larger the measuring range of the weight sensor is, the smaller the resolution is, the sensor corresponding to the weighing range needs to be switched when objects with different weights are tested, so that the aim of testing accuracy is fulfilled. At the moment, the sensors with different weighing ranges are required to be replaced to weigh the objects with different weight grades, and meanwhile, the corresponding weighing ranges are required to be switched in the system. In some specific scenarios such as: the manual switching and frequent operation in the system are required without a data acquisition system of personnel on site, a data acquisition system with high switching frequency, a data acquisition system of high-risk operation, and the like. This is time consuming and also greatly increases labor costs.

Disclosure of Invention

The utility model aims to overcome the defect that a weighing system needs to be manually and frequently switched in the prior art, and provides a circuit for simultaneously switching a weighing range and a wake-up method.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the circuit comprises a resistor, a first switch, a second switch, a processor, an interface J1 and an interface J2, wherein a 1# direct current power supply VCC is connected in series with a resistor R1 and a 2# pin of the interface J1, the 1# pin of the interface J1 is connected in series with the first switch and then connected in parallel with the 1# pin of the interface J2, the 1# pin of the J2 is also connected in series with a resistor R3 and connected in parallel, the 2# pin of the interface J2 is connected in series with the processor and then connected in parallel with a resistor R4 to be grounded, the 3# pin of the interface J2 is connected in series with the second switch, the resistors R2 and the 2# direct current power supply VCC, and the interface J2 is a double-range weighing meter;

after the first switch is closed, the pin 1# of the interface J2 is powered by VCC, the equipment wakes up, and the weighing meter enters a preset high range;

after the second switch is closed, the 3# pin of the interface J2 is powered by VCC, the equipment wakes up, and the weighing meter enters a preset low range;

after the equipment wakes up, the processor switches the measuring range of the weighing meter according to the level change of the No. 2 pin of the interface J2, when the level change of the No. 2 pin is from high to low, the weighing meter is controlled to enter a high measuring range, and when the level change of the No. 2 pin is from low to high, the weighing meter is controlled to enter a low measuring range.

As a preferable scheme of the utility model, the 2# pin of the interface J2 is a single GPIO detection pin.

As a preferable scheme of the utility model, when the 1# pin of the interface J2 is powered on, the 3# pin is dormant.

As a preferable scheme of the utility model, when the 3# pin of the interface J2 is powered on, the 1# pin is dormant.

As a preferable scheme of the utility model, the first switch is a key switch, and the second switch is a ball switch.

As a preferable mode of the present utility model, the voltage value of the 1# dc power VCC and the voltage value of the 2# dc power VCC are both 3.3V.

As a preferable scheme of the utility model, R1 and R2 are pull-up resistors, and the resistance value is 10KΩ.

As a preferable scheme of the utility model, R3 and R4 are pull-down resistors, and the resistance value is 10KΩ.

In order to achieve the above purpose, the utility model also adopts the technical scheme that:

a device for simultaneously switching weighing ranges and wake-up methods, comprising a circuit as claimed in any one of the preceding claims.

As a preferable scheme of the utility model, the device is used for externally connecting a double-range weighing meter.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

because the weighing meter is essentially a piezoresistor, through the circuit connection of the utility model, different pins are correspondingly connected with different measuring ranges, the sensor starts to work after VCC power supply is obtained, meanwhile, different physical switches are added, corresponding to different awakening modes, the processor detects level signals after awakening, and then different measuring ranges are entered, so that the simultaneous switching of the measuring ranges and the awakening method are realized, and the requirement of frequent switching of the measuring ranges in certain scenes is solved. And the utility model saves not only circuit space but also software algorithm by simple circuit design and construction, and is beneficial to popularization and application.

Drawings

Fig. 1 is a schematic circuit diagram of the present utility model.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

Referring to fig. 1, a schematic circuit diagram of the present utility model is shown. The utility model discloses a circuit for simultaneously switching weighing range and wake-up method, which comprises four resistors, a first switch, a second switch, a processor, an interface J1 and an interface J2. In the utility model, taking a weighing meter with 50kg and 1T measuring ranges as an example, the 1# pin of the interface J2 is the 1T measuring range of the weighing meter, and the 3# pin of the interface J2 is the 50kg measuring range of the weighing meter.

The 1# direct current power supply VCC is connected with a resistor R1 and a 2# pin of the interface J1 in series, the 1# pin of the interface J1 is connected with the first switch in series and then connected with the 1# pin of the interface J2 in parallel, the 1# pin of the interface J2 is also connected with a resistor R3 in series and grounded, the 2# pin of the interface J2 is connected with a processor in series and then connected with a resistor R4 in parallel and grounded, the 3# pin of the interface J2 is connected with the second switch in series, and the resistors R2 and the 2# direct current power supply VCC are connected with each other;

after the first switch is closed, the pin 1# of the interface J2 is powered by VCC, the equipment wakes up, and the weighing meter enters a preset high range; after the second switch is closed, the 3# pin of the interface J2 is powered by the 2# VCC, the equipment wakes up, and the weighing meter enters a preset low range;

after the equipment wakes up, the processor switches the measuring range of the weighing meter according to the level change of the No. 2 pin of the interface J2, when the level change of the No. 2 pin is from high to low, the weighing meter is controlled to enter a high measuring range, and when the level change of the No. 2 pin is from low to high, the weighing meter is controlled to enter a low measuring range. The 2# pin of the interface J2 is a single GPIO detection pin.

Specifically, pin 3 sleeps when pin 1 of interface J2 is powered on. When pin 3 of interface J2 is powered on, pin 1 goes to sleep.

In the circuit for simultaneously switching weighing range and wake-up method disclosed by the utility model, the resistor R1 and the resistor R2 are pull-up resistors, the resistor R3 and the resistor R4 are pull-down resistors, and the resistance values are 10KΩ. The voltage values of the No. 1 direct current power supply VCC and the No. 2 direct current power supply VCC are 3.3V.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The circuit is characterized by comprising a resistor, a first switch, a second switch, a processor, an interface J1 and an interface J2, wherein a 1# direct current power supply VCC is connected with a resistor R1 and a 2# pin of the interface J1 in series, the 1# pin of the interface J1 is connected with the first switch in parallel and then connected with the 1# pin of the interface J2 in parallel, the 1# pin of the J2 is also connected with a resistor R3 in series and is grounded, the 2# pin of the interface J2 is connected with a processor in series and then connected with a resistor R4 in parallel to be grounded, the 3# pin of the interface J2 is connected with the second switch in series, the resistors R2 and the 2# direct current power supply VCC are double-range weighing meters;

2. The circuit for simultaneously switching between a weighing range and a wake-up method according to claim 1, wherein the pin 2 of the interface J2 is a single GPIO detection pin.

3. The circuit for simultaneously switching between the weighing range and the wake-up method according to claim 1, wherein pin 3 is dormant when pin 1 of the interface J2 is powered.

4. The circuit for simultaneously switching between the weighing range and the wake-up method according to claim 1, wherein pin 1 is dormant when pin 3 of the interface J2 is powered.

5. The circuit for simultaneously switching a weighing scale and a wake-up method according to claim 1, wherein the first switch is a push-button switch and the second switch is a ball switch.

6. The circuit for simultaneously switching weighing scales and wake-up methods according to claim 1, wherein the voltage value of the 1# direct current power supply VCC and the voltage value of the 2# direct current power supply VCC are both 3.3V.

7. The circuit for simultaneously switching weighing ranges and wake-up methods according to claim 1, wherein R1 and R2 are pull-up resistors with a resistance of 10kΩ.

8. The circuit for simultaneously switching weighing ranges and wake-up methods according to claim 1, wherein R3 and R4 are pull-down resistors with a resistance of 10kΩ.

9. A device for simultaneously switching weighing scales and wake-up methods, characterized in that the device comprises a circuit according to any of the preceding claims 1-8.

10. The device for simultaneously switching between a weighing scale and a wake-up method according to claim 9, wherein the device is used with an external dual-scale weighing scale.