CN202814560U

CN202814560U - Equipotential grounding structure for temperature sensor

Info

Publication number: CN202814560U
Application number: CN201220484079.6U
Authority: CN
Inventors: 杨志强; 汪俊
Original assignee: ZHUHAI YADO MONITORING TECHNOLOGY CO LTD
Current assignee: ZHUHAI YADO MONITORING TECHNOLOGY CO LTD
Priority date: 2012-09-19
Filing date: 2012-09-19
Publication date: 2013-03-20
Anticipated expiration: 2022-09-19

Abstract

The utility model discloses an equipotential grounding structure for a temperature sensor. The temperature sensor (1) is located on a circuit board (2) for measuring the temperature of a high-voltage part (3) of equipment; the circuit board (2) and the high-voltage part (3) are in physical connection by adopting a mental conduction part (4); and the grounding pin of the temperature sensor (1) are conducted with the mental conduction part (4). Thus, the grounding level of the temperature sensor (1) can be made to be equal to the potential of the high-voltage part (3) to enable the temperature sensor (1) to work normally; and the mental conduction part (4) can be used as a temperature transmission channel to directly transmit heat of the high-voltage part (3) to the temperature sensor (1), and equipotential grounding is realized and simultaneously temperature measurement is realized.

Description

The electrical grounding structure that is used for temperature probe

Technical field

The utility model relates to a kind of electrical grounding structure for temperature probe.

Background technology

The technology of Internet of things concept is extensively admitted, but the bottleneck that Internet of Things is used is the obtain manner of working sensor electric energy and to the dependence of battery.Battery can be kept under discontinuous duty 10 years in theory, but in fact was subjected to various factors, such as environment temperature, payload, caused greatly shorten actual life.Along with the development of communication and application of net is popularized, application sensors is more and more under the various environment of all trades and professions, temperature probe for example, this so that various on the spot from adopt can sensor technical scheme become focus.Common are at present sun power, CT adopt can, vibration adopt can etc., but all have limitation to energy source.

It can be a kind of novel energy technology of certainly adopting that semiconductor temperature difference is adopted, it is with noiselessness, pollution-free, wide accommodation, safe and reliable, the long-term advantage such as non-maintaining, can utilize temperature difference work with the output electric energy in the place that thermal source is arranged, be usually used in the temperature probe, power for temperature probe or other circuit, so this device have wide prospect of the application in the monitoring field.When but the thermal source that places when temperature probe is the measuring position of voltage levels, if the circuit of temperature probe is directly placed the high pressure position, to produce high pressure between circuit and the high pressure position, the electron device of temperature probe is very easily damaged by high voltage, greatly reduce serviceable life, therefore must propose a kind of rational ground connection structure, temperature probe can be worked in the normal voltage scope.

The utility model content

Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and the electrical grounding structure the when measuring position that a kind of temperature probe is in voltage levels is provided is with the electron device of protection temperature probe sensitive for damages not.

The technical scheme that the utility model relates to is: the electrical grounding structure that is used for temperature probe that the utility model relates to, this temperature probe is positioned on the circuit board and is used for the temperature at measuring equipment high pressure position, described circuit board adopts the metallic conduction component physical to be connected with this high pressure position, and the grounding leg of described temperature probe and this metallic conduction parts are conducted.

Preferred, described these metallic conduction parts are copper bolt and the paster nut that pair of matched is closed, and this paster nut-welding is on described circuit board, and the grounding leg of described temperature probe is connected with the pad of this paster nut.

Further, also be provided with a thermoelectric generator on described circuit board, this thermoelectric generator has a cold junction and a hot junction, and described hot junction and high pressure position heat are transmitted.

Further, be connected with the high pressure position but described circuit board passes through the mounting bracket of a heat conduction, described hot junction contacts with this mounting bracket.

Further, described mounting bracket and high pressure position are bolted to connection.

The beneficial effects of the utility model are: because the circuit board of temperature probe adopts the metallic conduction component physical to be connected with the high pressure position in the utility model, the grounding leg of described temperature probe and this metallic conduction parts are conducted, so not only can accomplish to make the ground level of circuit and high-pressure section that equal potentials be arranged, the supply voltage of the electronic section of temperature probe " floats over " on the high voltage, can make the temperature probe normal operation, and these metallic conduction parts can also be as the transmission channel of temperature, the heat at high pressure position directly is passed to temperature probe, when realizing electrical grounding, realizes temperature survey.

Description of drawings

Fig. 1 is the synoptic diagram of electrical grounding structure of the present utility model;

Fig. 2 is the vertical view of circuit board in the utility model.

Embodiment

Now referring to illustrated in figures 1 and 2, with specific embodiment principle of the present utility model is further elaborated:

As shown in Figure 1, the utility model relates to a kind of electrical grounding structure for temperature probe, this temperature probe 1 is positioned on the circuit board 2 and is used for the temperature at measuring equipment high pressure position 3, described circuit board 2 and these high pressure position 3 usefulness metallic conduction parts, 4 physical connections, the grounding leg of described temperature probe 1 and this metallic conduction parts 4 are conducted.This spline structure Main Function is 2 points: first, by with circuit board 2 and high pressure position 3 usefulness metallic conduction parts, 4 physical connections, so that the current potential of the grounding leg of described temperature probe 1 equates with the noble potential at high pressure position 3, the supply voltage of the electronic section of temperature probe 1 " floats over " on the high voltage, can guarantee temperature probe 1 normal operation and not fragile.For example be positioned at the temperature probe on the 10KV, because the electrical grounding of said structure, the ground level of temperature probe rises to 10KV, if the temperature probe operating voltage is 3V, voltage after then the sensor current potential connects is 10003V, guarantee that circuit voltage and high-pressure section voltage difference are 3V, guarantee that like this electron device of temperature probe can be not damaged; The second, because the heat transfer process of metallic conduction parts 4 is directly passed to temperature probe with high pressure position 3 heats, reach the purpose of thermometric.

More specifically, on described circuit board 2, also be provided with a thermoelectric generator 7, this thermoelectric generator 7 has a cold junction 72 and a hot junction 71, transmit with high pressure position 3 heat in described hot junction 71, this thermoelectric generator 7 is adopted the energy sensor certainly for semiconductor temperature difference, generally be combined with heating radiator at cold junction 72, when having uniform temperature, cold junction 72 and hot junction 71 will produce electric energy when poor, by after the specific circuit conversion for above-mentioned temperature probe or other circuit, this problem in serviceable life that can avoid using battery to occur by the self-energizing design of temperature variation also can be used with battery.But described circuit board 2 is connected with high pressure position 3 by the mounting bracket 5 of a heat conduction, the mounting bracket 5 general metal materials that adopt, and described hot junction 71 contacts with this mounting bracket 5, and described mounting bracket 5 is fixedly connected with by bolt 6 with high pressure position 3.Copper bolt 42 and paster nut 41 that described these metallic conduction parts 4 can close for pair of matched, this paster nut 41 is welded on the described circuit board 2, the pad of paster nut 41 is the ground pad, the grounding leg of described temperature probe 1 and the pad 8(of this paster nut 41 such as the dash area among Fig. 2) be connected, copper bolt 42 can be selected the good material of other electrical and thermal conductivity, its end cooperates with paster nut 41, and the other end is fixed on the mounting bracket 5.When temperature probe is measured the temperature at high pressure position 3, by the connection function of copper bolt 42 so that the current potential of the grounding leg of temperature probe 1 equals the noble potential at high pressure position 3, and the heat at high pressure position 3 is passed to the grounding leg (being the heat input pin) of temperature probe 1 successively always by mounting bracket 5, copper bolt 42 and pad 8, reach the purpose of measuring high pressure position 3 temperature, the temperature of measuring also is the temperature in the hot junction 71 of above-mentioned thermoelectric generator 7.The energy of simultaneously temperature probe 1 work own can be provided by the above-mentioned thermoelectric generator of mentioning 7 and interlock circuit thereof, has reached the purpose of oneself powering in this cover temperature measuring equipment.

Be understandable that, electrical grounding structure of the present utility model incessantly be used for above-mentioned can self-energizing temperature measuring equipment, can also be used for any occasion that need to measure with temperature probe the voltage levels position.Certainly above illustrated embodiment is just to elaborating that the technical solution of the utility model is carried out; protection domain of the present utility model is not construed as limiting; all all should be within protection domain of the present utility model according to the equivalent variations that thinking of the present utility model and intention are made technique scheme.

Claims

1. electrical grounding structure that is used for temperature probe, this temperature probe (1) is positioned at circuit board (2) upward and is used for the temperature at measuring equipment high pressure position (3), it is characterized in that: adopt metallic conduction parts (4) physical connection between described circuit board (2) and this high pressure position (3), the grounding leg of described temperature probe (1) and this metallic conduction parts (4) are conducted.

2. the electrical grounding structure for temperature probe according to claim 1, it is characterized in that: copper bolt (42) and paster nut (41) that described these metallic conduction parts (4) close for pair of matched, this paster nut (41) is welded on the described circuit board (2), and the grounding leg of described temperature probe (1) is connected with the pad of this paster nut (41).

3. the electrical grounding structure for temperature probe according to claim 1 and 2, it is characterized in that: on described circuit board (2), also be provided with a thermoelectric generator (7), this thermoelectric generator (7) has a cold junction (72) and a hot junction (71), and transmit with high pressure position (3) heat described hot junction (71).

4. the electrical grounding structure for temperature probe according to claim 3, it is characterized in that: described circuit board (2) but mounting bracket (5) by a heat conduction be connected with high pressure position (3), described hot junction (71) contact with this mounting bracket (5).

5. the electrical grounding structure for temperature probe according to claim 4, it is characterized in that: described mounting bracket (5) is fixedly connected with by bolt (6) with high pressure position (3).