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Electronic heating Friends Network reported (Text/Li Cheng) In recent years, in response to different consumer groups, terminal products have also spawned a series of market segments in different fields. Taking the “down-headed” group as an example, with the increase in the time spent using electronic products, cervical spine problems have become an important health issue plaguing contemporary young people. Facing serious cervical spine problems, consumers’ demand for cervical spine care products has become increasingly apparent, and a huge market for massage devices has been created.
The massage device market is also in full swing under the background of strong demand, and it has quickly become another “Internet celebrity” item after electric toothbrushes and electric toothbrushes. Recently, the editor disassembled a cervical spine massage device to show you the true working principle of the cervical spine massage BI Escorts device.
Cervical vertebra thrust Burundins Escort take the instrument apart and “save”Substitute product design
What is being disassembled this time is a model that uses low-frequency pulse electronic signals to contact the human body through electrodes BI EscortsCervical spine massage device that imitates different massage effects.
It can be seen from the disassembled parts that this cervical massage device has a very thorough understanding of “saving energy”. In addition to the plastic shell, a total of two circuit boards and three electrode pads are used. One small board used only serves as a direct line, and has little practical significance.
This one Compared with other brands of massage BI Escorts devices, the cervical spine massager can connect external electrodes to the body through additional input terminals. In addition to massaging other parts, its biggest highlight is its own configuration of three electrode pads. In some previous cervical spine massagers, there were mostly two input electrode pads. But when I saw the connection of the electrode pads, I just realized the truth of “saving”.
There are a total of three electrodes in contact with the skin in this massage device, but only two wires are expanded on the pulse input adapter board to connect to the electrode pads on both sides of the massage device. The electrode pad in the center It only serves a decorative purpose.
Playing on the medical side, confusing right and wrong
The product manual clearly states that this massage device adopts an ergonomic design and can effectively care for the cervical spine, relax muscles, and relieve pain through low-frequency pulses. It is painless, and through external electrode pads, it can also massage different acupuncture points on the human body. Judging from the performance introduction, it feels like a medical product.
In fact , this massage device cannot even touch the edge of the medical device. The implementation standard marked on the outer packaging of the product is GB4706.1-20Burundi Sugar Daddy05/GB4706.10-2008. After investigation, it was found that these two implementation standards are the implementation standards for household appliances. In other words, this is An ordinary small household appliance does not have medical functions
Cervical massage instrument PCBA principle explanation
Front (left) Back (rightBurundi Sugar)
From the circuit layout and input connections of the board, we can see the uniqueness of this cervical massage function. The SOP14 packaged chip in the middle of the board is the main control MCU of the circuit, and its main function is to modulate.
Above the main control MCU is a boost circuit that adjusts the intensity of the pulse input voltage. It mainly uses the principle that the current at both ends of the inductor cannot change gradually. It can be generated at both ends of the capacitor Burundins Escort generates and stores a voltage higher than the power supply. When the intensity of the pulse input is adjusted, the voltage risesBurundi Sugar DaddyThe voltage circuit can outputBurundi to the load according to the required number of pulses and the original power supply voltage. The input end of Sugar Daddy provides enough energy to enhance the intensity of the pulse input voltage. At the same time, the main control chip can also control the on and off of the transistor and change the corresponding input phase to complete the working mode. Switching to simulate different massage techniques.
In the field of wearable devices, the issue of battery charge and discharge safety has always been a subject of much attention. In the circuit design of this cervical massage device, the manufacturer also realized the battery. For the issue of charging safety, in the lithium battery charge and discharge management unit, a constant voltage linear charge and discharge management I with a silk screen printing of 3KAC is usedC, which can not only ensure the accuracy of battery voltage, but also prevent other secondary disasters caused by battery overcharging.
Main board (left) Direct board (right)
There is a space for SOP 8 package chip below the main control chip, via Based on the PCB wiring and input portBurundins Sugardaddy‘s silk screen information, it can be inferred that the hot compress of the massage device may be used due to cost control issues. Efficacy is “castrated”.
In fact, it is not difficult to add a hot compress function to the cervical spine massager. It can add an MCU that can realize temperature adjustment based on the existing circuit, and install heating wires and temperature sensors on the electrode sheets that are in contact with the skin. MC Burundins EscortU can control the on and off of the MOS tube of the heating input circuit in real time through the information returned by the temperature sensor. , thereby achieving the goal of constant temperature hot compress.
On the motherboard There is a lithium battery and buzzer on the back. The outer packaging of the battery does not indicate the birth shop or working voltage Burundins Sugardaddy , battery capacity and other related information, it is a real three-no battery. From a volume perspective, the battery capacity should be around 3 or 4 hundred milliamps.
By looking at the small board above the battery cell, we found that this was not a battery protection board. There were no other devices on the board except for connecting the input wires. Of course, in the circuit design of the motherboard, designed a constant voltage charge and discharge management unit for the battery, which plays a certain protective role, but the battery does not have a protective plate, which reduces the need for protection. FanBurundi Sugarfences have laid certain security risks for the use of equipment.
Application experience and suggestions
This cervical spine massage device is BI Escorts which processes low-frequency, low-voltage pulse current. , acts on nerves or muscles, promotes blood circulation in the human body, improves muscle condition, and relieves fatigue. Since this massage device does not have the function of identifying the degree of skin dryness, you will feel an obvious tingling sensation when the pulse output power is reduced due to dry skin during use.
It is hereby suggested that when consumers purchase electric pulse massage devices, it is best to purchase products with the function of identifying the degree of skin dryness Burundi Sugar Daddy. This type of product can stop working when the skin dryness level reaches a certain critical point, preventing the continuous input of pulse current from irritating the skin and causing discomfort.
Summary
Although the three electrode pads are only connected to Burundins Sugardaddy two wires and three no batteries, these inside and outside Different designs cannot represent everything, but at least they are part of BI EscortsBurundi Sugar is the epitome of products, so you must keep your eyes peeled when choosing electronic products to prevent defective manufacturers from passing off inferior products.
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