阅读说明：本技术 通信机房直流用电设备用电量计量装置及其应用方法 (Power consumption metering device for direct-current electric equipment in communication machine room and application method thereof ) 是由 曾菊阳 蔡立 彭卫文 于 2021-01-19 设计创作，主要内容包括：本发明公开了一种通信机房直流用电设备用电量计量装置及其应用方法,装置包括电量计量组件和至少一个用于检测单路电缆用电量的电量检测组件,所述电量检测组件包括相互连接的两个电缆固定夹,每一个电缆固定夹上设有一个用于刺破被检测电缆绝缘层的电压采样针头,且两个电缆固定夹上的电压采样针头分别与电量计量组件的输入端相连,所述电量计量组件用于根据两个电压采样针头之间的电压差计算得到被检测电缆上所连用电设备的用电量。本发明不容易产生安装误差,对于安装的要求较低,相比采用霍尔元件间接采样的方式而言检测精度高、波动小、可靠性好,而且设备成本低廉,尤其适用于通信机房内包含大量直流用电设备的检测场景。(The invention discloses a power consumption metering device for direct current electric equipment of a communication machine room and an application method thereof. The invention is not easy to generate installation errors, has lower installation requirements, has high detection precision, small fluctuation, good reliability and low equipment cost compared with a Hall element indirect sampling mode, and is particularly suitable for a detection scene containing a large amount of direct current electric equipment in a communication machine room.)

1. The utility model provides a communication computer lab direct current consumer uses electric quantity metering device, its characterized in that, is used for detecting electric quantity detection subassembly (2) of one way cable power consumption including electric quantity measurement subassembly (1) and at least one, electric quantity detection subassembly (2) include two cable fixation clamps (21) of interconnect, are equipped with one on each cable fixation clamp (21) and are used for pricking voltage sampling syringe needle (22) that are detected the cable insulating layer, and voltage sampling syringe needle (22) on two cable fixation clamps (21) link to each other with the input of electric quantity measurement subassembly (1) respectively, electric quantity measurement subassembly (1) are used for calculating the power consumption that obtains the consumer that links to each other on being detected the cable according to the voltage difference between two voltage sampling syringe needles (22).

2. The electricity consumption metering device for the direct current electric equipment in the communication machine room according to claim 1, wherein a threaded hole (211) is formed in the cable fixing clamp (21), the voltage sampling needle (22) is inserted into the threaded hole (211) and is in threaded fit with the threaded hole (211), and a tip end for piercing an insulation layer of the detected cable and electrically connecting and conducting with a metal part of the detected cable is arranged at the inner side end of the voltage sampling needle (22).

3. The electricity consumption metering device for the communication machine room direct current electric equipment according to claim 1, characterized in that the cable fixing clamp (21) is a hoop with an opening, and a connecting bolt (212) is connected between two open ends of the hoop.

4. The electricity consumption metering device for the direct current electric equipment in the communication machine room as claimed in claim 1, wherein the two cable fixing clamps (21) are connected with each other through a connecting piece (23), and the connecting piece (23) is a rigid connecting piece or an inelastic flexible connecting piece, so that the distance between the two cable fixing clamps (21) is fixed.

5. The electricity consumption metering device for the direct-current electric equipment in the communication machine room according to claim 1, wherein the two cable fixing clamps (21) are connected with each other through a telescopic mechanism, the telescopic mechanism is composed of an inner connecting pipe and an outer inner connecting pipe which are nested with each other, the inner connecting pipe is inserted into the outer inner connecting pipe, and the inner connecting pipe is provided with a scale for indicating the distance between the two cable fixing clamps (21).

6. The electricity consumption metering device for the direct current electric equipment in the communication machine room according to the claim 1, characterized in that the two cable fixing clamps (21) are connected with each other through a linear actuator, and the linear actuator is connected with the electricity metering component (1) to feed back the current expansion amount of the linear actuator.

7. The electricity consumption metering device for the direct current electric equipment in the communication machine room according to claim 1, wherein the electricity consumption metering component (1) comprises a voltage conversion circuit (11), a differential amplification circuit (12) and a processing unit (13), voltage sampling needles (22) on two cable fixing clamps (21) are respectively connected with the input end of the differential amplification circuit (12) through one voltage conversion circuit (11), the output end of the differential amplification circuit (12) is connected with the processing unit (13), and the processing unit (13) is used for calculating the electricity consumption of the electric equipment connected to the detected cable according to the voltage difference between the two voltage sampling needles (22).

8. The electricity consumption metering device for the direct current electric equipment in the communication machine room according to the claim 7, characterized in that the processing unit (13) is further connected with a nonvolatile memory (14) for storing the electricity information.

9. The electricity consumption metering device for the direct-current electric equipment in the communication machine room according to the claim 8, characterized in that the processing unit (13) is further connected with a communication module (15).

10. The method for applying the electricity consumption metering device for the direct-current electric equipment in the communication machine room according to any one of claims 1 to 9, characterized by comprising the step of calculating the electricity consumption of the electric equipment connected to the detected cable by the electricity metering component (1) according to the voltage difference between the two voltage sampling needles (22) in a period T: calculating the current I of the detected cable according to the I-delta V/R, wherein delta V is the voltage difference between the two voltage sampling needle heads (22), and R is the resistance corresponding to the detected cable between the two voltage sampling needle heads (22); and multiplying the current I of the detected cable by the power supply voltage U to obtain the current power P of the electric equipment connected to the detected cable, and multiplying the current power P by the period T to obtain the electricity consumption E of the period.

Technical Field

The invention relates to a method and equipment for detecting the electric quantity matched with a communication machine room, in particular to a device for measuring the electric quantity used by direct-current electric equipment of the communication machine room and an application method thereof.

Background

In the case of multiple mobile communication operators, in order to reduce the construction cost of the mobile communication base station, the multiple mobile communication operators adopt a mode of sharing a communication machine room of the mobile communication base station, which is beneficial to reducing the cost of self-construction of the mobile communication base station. For example, china mobile, china unicom and china telecom all share the mobile communication base station of the china iron tower limited company. Therefore, a large amount of direct current electric equipment of a plurality of mobile communication operators, including a server, network equipment, air conditioning equipment and the like, can exist in a communication room of the mobile communication base station. In this case, how to account for the power consumption of each mobile communication carrier has become a problem to be solved for the cost management of the common mobile communication base station.

At present, in order to detect the power consumption of the direct current electric equipment in the communication machine room, the detection is generally realized on the basis of a current collection mode of a hall element. However, the method for detecting the power consumption of the direct-current electric equipment in the communication machine room by adopting the hall element has the following technical problems: (1) the Hall element has high cost, and a large amount of direct current electric equipment of a plurality of mobile communication operators exists in a communication machine room, so that the cost of detecting the electric quantity is very high; (2) the detection precision of the Hall element cannot meet the requirement, on one hand, the detection precision of the Hall element is limited, on the other hand, the Hall element is often required to be installed with high precision, for example, the Hall element must be perpendicular to a power supply cable, and also has strict requirements on concentricity, and the two factors can cause the Hall element to have low detection precision, large fluctuation and poor reliability, so that metering holes are easy to appear.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the invention provides a device for metering the power consumption of direct-current electric equipment in a communication machine room and an application method thereof, aiming at the problems in the prior art, the device is not easy to generate installation errors, has lower installation requirements, has high detection precision, small fluctuation, good reliability and low equipment cost compared with a Hall element indirect sampling mode, and is particularly suitable for a detection scene containing a large amount of direct-current electric equipment in the communication machine room.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides a communication computer lab direct current consumer uses electric quantity metering device, is used for detecting the electric quantity measuring subassembly of single track cable power consumption including electric quantity measuring subassembly and at least one, electric quantity measuring subassembly includes two cable fixation clamps of interconnect, is equipped with one on each cable fixation clamp and is used for pricking the voltage sampling syringe needle that is detected the cable insulation layer, and the voltage sampling syringe needle on two cable fixation clamps links to each other with electric quantity measuring subassembly's input respectively, electric quantity measuring subassembly is used for calculating the power consumption that obtains the consumer that links to each other on being detected the cable according to the voltage difference between two voltage sampling syringe needles.

Optionally, a threaded hole is formed in the cable fixing clamp, the voltage sampling needle is inserted into the threaded hole and is in threaded fit with the threaded hole, and a tip end used for puncturing an insulation layer of the detected cable and electrically connecting and conducting with a metal part of the detected cable is arranged at the end part of the inner side of the voltage sampling needle.

Optionally, the cable fixing clip is a hoop with an opening, and a connecting bolt is connected between two open ends of the hoop.

Optionally, the two cable fixing clamps are connected with each other through a connecting piece, and the connecting piece is a rigid connecting piece or an inelastic flexible connecting piece, so that the distance between the two cable fixing clamps is fixed.

Optionally, the two cable fixing clamps are connected with each other through a telescopic mechanism, the telescopic mechanism is composed of an inner connecting pipe and an outer inner connecting pipe which are nested with each other, the inner connecting pipe is inserted into the outer inner connecting pipe, and scales used for representing the distance between the two cable fixing clamps are arranged on the inner connecting pipe.

Optionally, the two cable fixing clamps are connected with each other through a linear actuator, and the linear actuator is connected with the electric quantity metering assembly to feed back the current telescopic quantity of the linear actuator.

Optionally, the electricity metering component includes a voltage conversion circuit, a differential amplification circuit and a processing unit, the voltage sampling needles on the two cable fixing clamps are respectively connected with the input end of the differential amplification circuit through one voltage conversion circuit, the output end of the differential amplification circuit is connected with the processing unit, and the processing unit is used for calculating the electricity consumption of the electric equipment connected with the detected cable according to the voltage difference between the two voltage sampling needles.

Optionally, a nonvolatile memory for storing the power information is further connected to the processing unit.

Optionally, the processing unit is further connected with a communication module.

In addition, the invention also provides an application method of the electricity consumption metering device for the direct current electric equipment in the communication machine room, which comprises the following steps that the electricity consumption metering component calculates and obtains the electricity consumption of the electric equipment connected to the detected cable according to the voltage difference between the two voltage sampling needle heads in a period T: calculating the current I of the detected cable according to the I-delta V/R, wherein delta V is the voltage difference between the two voltage sampling needle heads, and R is the resistance corresponding to the detected cable between the two voltage sampling needle heads; and multiplying the current I of the detected cable by the power supply voltage U to obtain the current power P of the electric equipment connected to the detected cable, and multiplying the current power P by the period T to obtain the electricity consumption E of the period.

Compared with the prior art, the method for detecting the power consumption of the direct-current electric equipment in the communication machine room has the following advantages:

1. the electric quantity detection assembly comprises two cable fixing clamps which are mutually connected, wherein each cable fixing clamp is provided with a voltage sampling needle for puncturing an insulation layer of a detected cable, the electric quantity metering assembly is used for calculating the electricity consumption of the electric equipment connected to the detected cable according to the voltage difference between the two voltage sampling needles, the voltage information acquisition can be realized only by two sampling points, a Hall element is not needed, an expensive Hall element is not needed, the electricity consumption detection implementation cost of direct-current electric equipment can be effectively reduced, and the electric quantity detection assembly is particularly suitable for detecting the electricity consumption of a large quantity of direct-current electric equipment in a large scale.

2. The electric quantity detection assembly comprises two cable fixing clamps which are mutually connected, each cable fixing clamp is provided with a voltage sampling needle for puncturing an insulation layer of a detected cable, the electric quantity metering assembly is used for calculating the electricity consumption of the electric equipment connected on the detected cable according to the voltage difference between the two voltage sampling needles, the voltage information acquisition can be realized only by two sampling points, compared with a Hall element detection mode, the installation error is not easy to generate by adopting the sampling point mode, and the installation requirement is low.

3. The electric quantity metering component is used for calculating and obtaining the electricity consumption of the electric equipment connected on the detected cable according to the voltage difference between the two voltage sampling needle heads, the principle is that the power supply cable between the two voltage sampling needle heads is regarded as a sampling resistor connected with the direct current electric equipment in series to carry out direct voltage sampling, compared with a method of adopting Hall element indirect sampling, the electric quantity metering component has the advantages of high detection precision, small fluctuation and good reliability, the electricity consumption can be obtained only through simple calculation and judgment, the electric quantity metering component has simple processing and small calculation quantity, and the performance requirement of a processor is low.

Drawings

Fig. 1 is a schematic diagram of a basic structure of an apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic view illustrating an installation state of the power detection assembly according to the embodiment of the present invention.

Fig. 3 is a sectional structural diagram illustrating the use principle of the voltage sampling needle in the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of another implementation manner of the apparatus according to the embodiment of the present invention.

Illustration of the drawings: 1. an electricity metering component; 11. a voltage conversion circuit; 12. a differential amplifier circuit; 13. a processing unit; 14. a non-volatile memory; 15. a communication module; 2. an electric quantity detection component; 21. a cable retaining clip; 211. a threaded hole; 212. a connecting bolt; 22. a voltage sampling needle; 221. an insulating sleeve; 222. a conductive gasket; 223. a cable; 23. a connecting member.

Detailed Description

As shown in fig. 1 and fig. 2, this embodiment provides a power consumption metering device for dc electric equipment in a communication machine room, including a power consumption metering component 1 and at least one power consumption detecting component 2 for detecting power consumption of a single cable, where the power consumption detecting component 2 includes two mutually connected cable fixing clips 21, each cable fixing clip 21 is provided with a voltage sampling needle 22 for puncturing an insulation layer of a detected cable, and the voltage sampling needles 22 on the two cable fixing clips 21 are respectively connected with an input end of the power consumption metering component 1, and the power consumption metering component 1 is configured to calculate power consumption of electric equipment connected to the detected cable according to a voltage difference between the two voltage sampling needles 22. The detection principle of the electricity consumption metering device for the direct-current electric equipment in the communication machine room is that a power supply cable between two voltage sampling needle heads is regarded as a sampling resistor connected with the direct-current electric equipment in series to perform direct voltage sampling, compared with a mode of adopting Hall element indirect sampling, the detection precision is high, fluctuation is small, reliability is good, electricity consumption can be obtained only through simple calculation and judgment in the follow-up process, and the electricity consumption metering device has the advantages of simplicity in processing and small calculation amount, and has low performance requirement on a processor. The voltage information acquisition can be realized only by two sampling points without using a Hall element or an expensive Hall element, the implementation cost of the power consumption detection of the direct current electric equipment can be effectively reduced, and the method is particularly suitable for the power consumption detection of a large amount of direct current electric equipment in a large scale; compared with a Hall element detection mode, the mode of adopting the sampling point is not easy to generate installation errors, and the requirement on installation is low.

In order to ensure that the voltage sampling needle 22 is electrically connected and conducted with the metal part of the detected cable stably and reliably after penetrating through the insulation layer of the detected cable, as shown in fig. 1 and 3, in the present embodiment, a threaded hole 211 is formed in the cable fixing clip 21, the voltage sampling needle 22 is inserted into the threaded hole 211 and is in threaded fit with the threaded hole 211, and the inner end of the voltage sampling needle 22 is provided with a tip end for penetrating through the insulation layer of the detected cable and electrically connected and conducted with the metal part of the detected cable. Therefore, the insertion depth of the voltage sampling needle 22 can be conveniently adjusted by the screwdriver, so that the voltage sampling needle 22 can be conveniently ensured to be stably and reliably electrically connected and conducted with the metal part of the detected cable after penetrating through the insulating layer of the detected cable.

It goes without saying that the detection of the voltage difference can be realized only by maintaining the insulation between the two voltage sampling needles 22, and there are various ways to realize the insulation between the two voltage sampling needles 22, such as maintaining an insulation link between the two cable clamps 21, or using an insulation material for the cable clamps 21, etc. As an alternative embodiment, in order to ensure the strength of the two cable fixing clips 21 and the connection structure between the two cable fixing clips 21, in this embodiment, the two cable fixing clips 21 and the connection structure between the two cable fixing clips 21 are made of metal, and the threaded hole 211 is made of insulating plastic, so that the insulation between the voltage sampling needle 22 and the cable fixing clip 21 can be realized.

In addition, considering that the voltage of the communication machine room dc electric device is 48V, which exceeds the human body safety voltage, the cable fixing clip 21 is sleeved with the insulating sleeve 221, the cable fixing clip 21 is sleeved with the conductive washer 222, and the conductive washer 222 is connected with the input end of the electricity metering component 1 through the cable 223.

The cable retaining clip 21 is used to achieve the positioning between the voltage sampling needle 22 and the cable, which may have many possible implementations. For example, as shown in fig. 1 and fig. 2, the cable fixing clip 21 in this embodiment is an anchor ear with an opening, and a connecting bolt 212 is connected between two open ends of the anchor ear, so that the cable fixing clip can be conveniently and firmly mounted on the existing cable. In addition, other types of clamps may be used, as may the positioning between the voltage sampling needle 22 and the cable.

As a first optional implementation manner, considering that the distance between the two cable fixing clips 21 directly affects the resistance value of the cable section between the two cable fixing clips 21, in this embodiment, the two cable fixing clips 21 are connected to each other through the connecting member 23, and the connecting member 23 is a rigid connecting member or an inelastic flexible connecting member, so that the distance between the two cable fixing clips 21 is fixed, and thus the resistance value of the cable section between the two cable fixing clips 21 is fixed, and the accuracy of electric quantity measurement is prevented from being affected by installation errors or manual operation.

As a second optional implementation manner, considering the change of the requirement of the resistance value of the cable segment between the two cable fixing clamps 21, the two cable fixing clamps 21 may be further selectively connected to each other through a telescopic mechanism, the telescopic mechanism is composed of an inner connecting pipe and an outer inner connecting pipe which are nested with each other, the inner connecting pipe is inserted into the outer inner connecting pipe, and the inner connecting pipe is provided with a scale for indicating the distance between the two cable fixing clamps 21, and with the above structure, the initial adjustment of the resistance value of the cable segment between the two cable fixing clamps 21 can be realized when the two cable fixing clamps 21 are initially installed.

As a third optional implementation manner, considering the requirement of dynamically monitoring the resistance value of the cable segment between the two cable fixing clamps 21 and the requirement of correcting the installation error, the two cable fixing clamps 21 may be selectively connected to each other through the linear actuator, the linear actuator is connected to the electricity metering component 1 to feed back the current stretching amount of the linear actuator, the length of the cable segment between the two cable fixing clamps 21 corresponds to the current stretching amount of the linear actuator, and further corresponds to the resistance value of the cable segment between the two cable fixing clamps 21, the installation error of the two cable fixing clamps 21 may be determined, and it is monitored whether the relative position of the two cable fixing clamps 21 is manually changed later.

As shown in fig. 1, the electricity metering component 1 in this embodiment includes a voltage converting circuit 11, a differential amplifying circuit 12 and a processing unit 13, wherein voltage sampling pins 22 on two cable holders 21 are respectively connected to input terminals of the differential amplifying circuit 12 through one voltage converting circuit 11, an output terminal of the differential amplifying circuit 12 is connected to the processing unit 13, and the processing unit 13 is configured to calculate, according to a voltage difference between the two voltage sampling pins 22, a power consumption of an electric device connected to a detected cable. Considering that the voltage drop between the two voltage sampling needles 22 is small, in order to improve the sampling precision of the sampling resistor, the differential amplifier circuit 1 is adopted in the embodiment, and the voltage drop between the two voltage sampling needles 22 can be directly calculated and amplified through the differential amplifier circuit 12, so that the accuracy of voltage sampling can be improved.

As an alternative embodiment, as shown in fig. 4, the electricity metering component 1 may directly input the voltage signals of the two voltage sampling pins 22 into the processing unit 13 without using the differential amplifying circuit 12, and the processing unit 13 performs electricity metering according to the voltage drop between the detected voltages of the two voltage sampling pins 22. In this embodiment, the processing unit 13 integrates the functions of calculating the voltage drop (voltage of the sampling resistor) between the two voltage sampling pins 2 and amplifying the signal, and the performance requirement of the processing unit 13 is higher.

In this embodiment, the processing unit 13 is further connected with a nonvolatile memory 14 for storing power amount information. When the power supply works, the processing unit 13 accumulates the electric quantity, and the stored electric quantity data is updated through the nonvolatile memory 14 when the accumulation exceeds a preset threshold value, so that data loss caused by power failure can be prevented.

In this embodiment, the processing unit 13 is further connected to a communication module 15, which can be used to implement communication and interaction functions.

In addition, this embodiment further provides an application method of the foregoing electricity consumption metering device for communication machine room dc electric equipment, including the step of calculating, by the electricity metering component 1, the electricity consumption of the electric equipment connected to the detected cable according to the voltage difference between the two voltage sampling needles 22 at the period T: calculating the current I of the detected cable according to the I ═ Δ V/R, wherein Δ V is the voltage difference between the two voltage sampling needles 22, and R is the resistance corresponding to the detected cable between the two voltage sampling needles 22; and multiplying the current I of the detected cable by the power supply voltage U to obtain the current power P of the electric equipment connected to the detected cable, and multiplying the current power P by the period T to obtain the electricity consumption E of the period. The resistance R can be calculated according to the material of the power supply cable, the size of the cross section, and the length of the specified distance, for example, the length of the specified distance (line length L) is 400mm in this embodiment. The wire length L is 0.4 m (400mm), the cross-sectional area S is 4 mm, the resistivity ρ of pure copper in an environment of 20 ℃ is 0.0178 ohm-mm/m, and the resistance R ρ L/S is 0.0178 × 0.4/4-0.00178 ohm. Thus, if the supply cable current I is 10 amps, the voltage difference Δ V between the sampling points is 17.8 millivolts at 0.0178 volts.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.