CN109323361B - Method and system for detecting operation capacity of air conditioner - Google Patents
Method and system for detecting operation capacity of air conditioner Download PDFInfo
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- CN109323361B CN109323361B CN201811161489.5A CN201811161489A CN109323361B CN 109323361 B CN109323361 B CN 109323361B CN 201811161489 A CN201811161489 A CN 201811161489A CN 109323361 B CN109323361 B CN 109323361B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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Abstract
The application provides an operation capacity detection method and system of an air conditioner. The method for detecting the operation capacity of the air conditioner comprises the following steps: acquiring air conditioner operation parameters and capacity output values monitored by n monitoring points at a first preset time interval to obtain a first capacity output value sequence; calling capacity detection threshold values corresponding to the n monitoring points under the same operating environment to obtain a capacity detection threshold value sequence; judging whether the capacity output value of each monitoring point in the n monitoring points is smaller than a corresponding capacity detection threshold value; if yes, recording the times that the capacity output value is smaller than the corresponding capacity detection threshold value; and determining whether the operation capacity of the air conditioner reaches the standard or not according to the times. The method for detecting the operation capacity of the air conditioner can effectively improve the qualification rate of finished air conditioner products and improve the quality of the air conditioner.
Description
Technical Field
The application relates to the technical field of refrigeration equipment, in particular to a method and a system for detecting the operation capacity of an air conditioner.
Background
In the related art, for detecting the operation capability of the air conditioner (for example, detecting the cooling capability), the outlet air temperature of the air conditioner is generally compared with the ambient temperature, so as to determine the operation capability of the air conditioner, for example: the larger the difference between the outlet air temperature and the ambient temperature is, the higher the air conditioner operation capacity is, so that the air conditioner operation capacity is only qualitatively judged, and the following defects exist:
the operation capacity of the air conditioner cannot be quantitatively judged, so that whether the capacity output of the air conditioner is qualified or not cannot be effectively judged, and for some faults which are difficult to observe in the early stage, the fault can not be well checked by means of qualitatively analyzing the operation capacity of the air conditioner, and further, the qualification rate of finished products of the air conditioner is influenced.
Disclosure of Invention
The present application is directed to solving at least one of the above problems.
To this end, an object of the present application is to provide an operation capability detection method of an air conditioner. The method can effectively improve the qualification rate of finished air-conditioning products and the quality of the air-conditioning products.
A second object of the present application is to provide an operation capability detection system of an air conditioner.
A third object of the present application is to propose a non-transitory computer-readable storage medium.
A fourth object of the present application is to propose a refrigeration device.
In order to achieve the above object, an embodiment of a first aspect of the present application discloses an operation capability detection method for an air conditioner, including the following steps: acquiring air conditioner operation parameters and capacity output values monitored by n monitoring points at a first preset time interval to obtain a first capacity output value sequence; calling capacity detection threshold values corresponding to the n monitoring points under the same operating environment to obtain a capacity detection threshold value sequence; judging whether the capacity output value of each monitoring point in the n monitoring points is smaller than a corresponding capacity detection threshold value; if yes, recording the times that the capacity output value is smaller than the corresponding capacity detection threshold value; and determining whether the operation capacity of the air conditioner reaches the standard or not according to the times.
The method for detecting the operation capacity of the air conditioner can be used for detecting the operation capacity of the air conditioner on line and quantitatively judging whether the operation capacity output of the air conditioner is qualified or not. Due to the adoption of quantitative judgment modes such as capability value comparison and the like, faults which are difficult to observe in the early stage can be eliminated by using the detection of capability and energy efficiency, so that the qualification rate of finished air-conditioners is effectively improved, and the quality of the air-conditioners is improved.
In some examples, before the retrieving the capability detection threshold corresponding to the n monitoring points in the same operating environment and obtaining the capability detection threshold sequence, the method further includes: calculating an average value of a plurality of outdoor temperatures monitored at every interval of first preset time; judging whether the temperature difference between the current outdoor temperature and the average value of the plurality of outdoor temperatures is smaller than a first preset temperature difference or not; if yes, the step of calling the capacity detection threshold corresponding to the n monitoring points under the same operation environment to obtain a capacity detection threshold sequence is executed, otherwise, the operation capacity detection of the air conditioner is quitted.
In some examples, the determining whether the operation capacity of the air conditioner is up to the standard according to the number of times includes: judging whether the times are more than preset times or not; and if so, judging that the operation capacity of the air conditioner does not reach the standard.
In some examples, the capability detection thresholds corresponding to the n monitoring points under the same operating environment are provided by a cloud server.
An embodiment of a second aspect of the present application discloses an operation capability detection system of an air conditioner, including: the system comprises a first acquisition module, a second acquisition module and a monitoring module, wherein the first acquisition module is used for acquiring air conditioner operation parameters and capacity output values monitored by n monitoring points at a first preset time interval so as to obtain a first capacity output value sequence; the calling module is used for calling the capability detection threshold corresponding to the n monitoring points under the same operating environment to obtain a capability detection threshold sequence; the judging module is used for judging whether the capacity output value of each monitoring point in the n monitoring points is smaller than a corresponding capacity detection threshold value; and the capacity evaluation module is used for recording the times that the capacity output value is smaller than the corresponding capacity detection threshold value when the capacity output value is smaller than the corresponding capacity detection threshold value, and determining whether the operation capacity of the air conditioner reaches the standard or not according to the times.
The operation capacity detection system of the air conditioner can perform online detection on the operation capacity of the air conditioner and quantitatively judge whether the operation capacity output of the air conditioner is qualified or not. Due to the adoption of quantitative judgment modes such as capability value comparison and the like, faults which are difficult to observe in the early stage can be eliminated by using the detection of capability and energy efficiency, so that the qualification rate of finished air-conditioners is effectively improved, and the quality of the air-conditioners is improved.
In some examples, before the retrieving module retrieves the capability detection thresholds corresponding to the n monitoring points in the same operating environment to obtain the capability detection threshold sequence, the first obtaining module is further configured to calculate an average value of the multiple outdoor temperatures monitored at every interval in the first predetermined time, and determine whether a temperature difference between the current outdoor temperature and the average value of the multiple outdoor temperatures is smaller than a first predetermined temperature difference, if so, perform a step of retrieving the capability detection thresholds corresponding to the n monitoring points in the same operating environment to obtain the capability detection threshold sequence, otherwise, exit from the operating capability detection of the air conditioner.
In some examples, the capacity evaluation module is configured to determine whether the number of times is greater than a predetermined number of times, and if so, determine that the operation capacity of the air conditioner does not reach the standard.
In some examples, the capability detection thresholds corresponding to the n monitoring points under the same operating environment are provided by a cloud server.
Embodiments of a third aspect of the present application disclose a non-transitory computer-readable storage medium having stored thereon a computer program having stored thereon an operation capability detection program of an air conditioner, which when executed by a processor, implements the method described in embodiments of the first aspect above.
Embodiments of a fourth aspect of the present application disclose a refrigeration apparatus, including a memory, a processor, and an operation capability detection program of an air conditioner, which is stored on the memory and can be executed on the processor, wherein the processor implements the method of the embodiments of the first aspect when executing the operation capability detection program of the air conditioner.
Wherein the refrigeration equipment is an air conditioner.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of an operation capability detection method of an air conditioner according to an embodiment of the present application;
fig. 2 is a flowchart of an operation capability detection method of an air conditioner according to another embodiment of the present application;
fig. 3 is a schematic view of an air conditioner according to another embodiment of the present application;
fig. 4 is a block diagram of an operation capability detection system of an air conditioner according to another embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
The following describes an operation capability detection method and system of an air conditioner according to an embodiment of the present application with reference to the accompanying drawings.
Fig. 1 is a flowchart of an operation capability detection method of an air conditioner according to an embodiment of the present application. As shown in fig. 1, a method for detecting an operation capability of an air conditioner according to an embodiment of the present application includes the steps of:
s101: and acquiring the air conditioner operation parameters and the capacity output values monitored by n monitoring points at a first preset time every interval to obtain a first capacity output value sequence.
As a specific example, as shown in fig. 2, the first predetermined time is, for example, Y seconds. Y is, for example, 1 second, 2 seconds, 3 seconds, or the like.
The air conditioner operation parameters may include, but are not limited to, in addition to the indoor temperature T1 (also referred to as the indoor ambient temperature T1): the real-time outdoor environment temperature T2 of air conditioner, the compressor running frequency W, the opening Z of electronic expansion valve, the rotating speed of indoor fan A r/min, the rotating speed of outdoor fan Br/min.
As shown in fig. 3, a schematic diagram of an air conditioner is shown, the air conditioner includes an indoor unit portion at an indoor side and an outdoor unit portion at an outdoor side, wherein, in fig. 3, reference numerals respectively denote: the compressor 1, the four-way valve 2, the outdoor fan 31, the outdoor heat exchanger 32, the throttling element 4, the indoor fan 51, the indoor heat exchanger 52 and the numbers (i) to (12) are all temperature sensors arranged at different temperature monitoring points and the compressor running power W.
The air conditioner operation parameters can be acquired through corresponding sensors and the like, and the corresponding capacity output value at the current moment can be obtained through a calculation mode according to the operation parameters.
The method for detecting the operation capacity of the air conditioner can be applied to capacity detection when the air conditioner enters an unstable working state after being started. For example: when the air conditioner is started for the first time, a user is required to input information such as the volume V of the space used by the air conditioner, the material of the enclosure, the size of a door and a window and the like according to the actual condition of the user. Two preconditions are provided for entering unsteady state capacity detection, one is that the air conditioner does not carry out capacity detection for a long time; and secondly, the user requires capability detection. At this time, the operation parameter value and the real-time monitoring capability output value Qi are taken and recorded every x seconds, for example: if i is less than or equal to n, n Qi form a first capability output value sequence, and n is a positive integer.
S102: and calling capacity detection threshold values corresponding to the n monitoring points under the same operating environment to obtain a capacity detection threshold value sequence.
As shown in fig. 2, capability detection thresholds Qmin1, Qmin2, Qimin to Qnmin detected at the indoor initial temperature T1, the outdoor initial temperature T2 and the capability point detection time points (i.e. n monitoring points) T1, T2 and ti to tn at the set temperature Ts are retrieved, wherein Qmin1, Qmin2 and Qimin to Qnmin form a first capability output value sequence.
S103: and judging whether the capacity output value of each monitoring point in the n monitoring points is smaller than a corresponding capacity detection threshold value.
As shown in FIG. 2, when the air conditioner runs from the beginning to the ti moment, the real-time capacity output value Qi at the ti moment is recorded, and the Qi and the Qimin are compared to judge whether Qi-Qmini >0 is established or not.
S104: if Qi-Qmini >0 does not hold, the number of times the capability output value is less than the corresponding capability detection threshold is recorded. And if so, judging that the capacity output of the air conditioner is normal.
Namely: if Qi-Qmini >0 does not hold, then a memory may be used to record a value for the number of times C, which is assigned to C +1, where C has an initial value of 0, indicating the number of times the capability output value is less than the corresponding capability detection threshold.
S105: and determining whether the operation capacity of the air conditioner reaches the standard or not according to the times.
The method specifically comprises the following steps: judging whether the times are more than the preset times or not; and if so, judging that the operation capacity of the air conditioner does not reach the standard.
That is to say, after statistics is completed on n monitoring points, whether C > Ca is satisfied or not is judged, in other words, whether the detection unqualified times exceeds the standard or not is judged, if C > Ca is satisfied, the operation capacity of the air conditioner is judged to be poor, the air conditioner is unqualified, and otherwise, if C > Ca is not satisfied, the operation capacity output of the air conditioner is judged to be normal and qualified. Wherein, Ca is determined by a predetermined number of times, can be determined by experience of people, and can also be determined by a statistical method and the like.
For example: when 100 capacity output values are compared with the corresponding capacity detection threshold values, the number of times of the comparison is considered as being unqualified when the number of times reaches 5, n is 100, and the predetermined number of times can be set to 5.
It should be noted that the capability detection threshold corresponding to n monitoring points in the same operating environment is provided by the cloud server.
The method for detecting the operation capacity of the air conditioner can be used for detecting the operation capacity of the air conditioner on line and quantitatively judging whether the operation capacity output of the air conditioner is qualified or not. Due to the adoption of quantitative judgment modes such as capability value comparison and the like, faults which are difficult to observe in the early stage can be eliminated by using the detection of capability and energy efficiency, so that the qualification rate of finished air-conditioners is effectively improved, and the quality of the air-conditioners is improved.
Referring to fig. 2, in an embodiment of the present application, the method for detecting operation capability of an air conditioner, before obtaining a capability detection threshold sequence, further includes: calculating an average value of a plurality of outdoor temperatures monitored at every interval of first preset time; judging whether the temperature difference between the current outdoor temperature and the average value of the plurality of outdoor temperatures is smaller than a first preset temperature difference or not; if yes, the step of calling the capacity detection threshold corresponding to the n monitoring points under the same operation environment to obtain a capacity detection threshold sequence is executed, otherwise, the operation capacity detection of the air conditioner is quitted.
That is, every x seconds after the detection starts N4 × s, temperature values T2x, T22x … T2N4 × of the outdoor ambient temperature T2 at x seconds, 2x seconds to N4 × s are retrieved, T2avg ═ T2x + T22x + … + T2N4 ×)/N4 is taken, and it is determined whether | T2-T2avg | < Δ T2 is established, where the value of Δ T2 is related to T2avg, and the related values are stored in the storage or the cloud platform. If so, continuing to operate; if not, the unsteady state capability detection is stopped, and the detection can be restarted after the next time the air conditioner starts to operate again.
The method for detecting the operation capacity of the air conditioner can effectively improve the qualification rate of finished air conditioner products and improve the quality of the air conditioner.
Fig. 4 is a block diagram of an operation capability detection system of an air conditioner according to an embodiment of the present application. As shown in fig. 4, an operation capability detecting system 400 of an air conditioner according to an embodiment of the present application includes: a first acquisition module 410, a retrieval module 420, a determination module 430, and a capability assessment module 440.
The first obtaining module 410 is configured to obtain the air conditioner operating parameters and the capacity output values monitored by n monitoring points at a first predetermined time interval to obtain a first capacity output value sequence. The retrieving module 420 is configured to retrieve capability detection thresholds corresponding to the n monitoring points in the same operating environment, so as to obtain a capability detection threshold sequence. The determining module 430 is configured to determine whether the capability output value of each monitoring point in the n monitoring points is smaller than a corresponding capability detection threshold. The capacity evaluation module 440 is configured to record the number of times that the capacity output value is smaller than the corresponding capacity detection threshold when the capacity output value is smaller than the corresponding capacity detection threshold, and determine whether the operation capacity of the air conditioner reaches the standard according to the number of times.
In some examples, before the retrieving module 420 retrieves the capability detection thresholds corresponding to the n monitoring points in the same operating environment to obtain the capability detection threshold sequence, the first obtaining module is further configured to calculate an average value of the outdoor temperatures monitored at each interval in the first predetermined time, and determine whether a temperature difference between the current outdoor temperature and the average value of the outdoor temperatures is smaller than a first predetermined temperature difference, if so, the step of retrieving the capability detection thresholds corresponding to the n monitoring points in the same operating environment to obtain the capability detection threshold sequence is performed, otherwise, the operation capability detection of the air conditioner is exited.
In some examples, the capacity evaluation module 440 is configured to determine whether the number of times is greater than a predetermined number of times, and if so, determine that the operation capacity of the air conditioner is not met.
In some examples, the capability detection thresholds corresponding to the n monitoring points under the same operating environment are provided by a cloud server.
The operation capacity detection system of the air conditioner can perform online detection on the operation capacity of the air conditioner and quantitatively judge whether the operation capacity output of the air conditioner is qualified or not. Due to the adoption of quantitative judgment modes such as capability value comparison and the like, faults which are difficult to observe in the early stage can be eliminated by using the detection of capability and energy efficiency, so that the qualification rate of finished air-conditioners is effectively improved, and the quality of the air-conditioners is improved.
It should be noted that a specific implementation manner of the operation capability detection system of the air conditioner in the embodiment of the present application is similar to a specific implementation manner of the operation capability detection method of the air conditioner in the embodiment of the present application, and for a specific description, reference is made to the description of the method portion, and details are not repeated here in order to reduce redundancy.
Further, an embodiment of the present application discloses a non-transitory computer-readable storage medium having stored thereon a computer program having stored thereon an operation capability detection program of an air conditioner, which when executed by a processor, implements the operation capability detection method of the air conditioner in the above-described embodiment. Furthermore, the qualification rate of finished air conditioner products can be effectively improved, and the quality of the air conditioner is improved.
Further, an embodiment of the present application discloses an air conditioning device, which includes a memory, a processor, and an operation capability detection program of an air conditioner that is stored on the memory and is executable on the processor, and the processor implements the operation capability detection method of the air conditioner in the above embodiment when executing the operation capability detection program of the air conditioner. Furthermore, the qualification rate of finished air conditioner products can be effectively improved, and the quality of the air conditioner is improved.
Wherein, the refrigeration equipment is but not limited to an air conditioner.
In addition, other structures and functions of the refrigeration device according to the embodiment of the present application are known to those skilled in the art, and are not described herein in detail in order to reduce redundancy.
The non-transitory computer readable storage medium described above may take any combination of one or more computer readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM), a flash Memory, an optical fiber, a portable compact disc Read Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of Network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. An operation capacity detection method of an air conditioner is characterized by comprising the following steps:
acquiring air conditioner operation parameters and capacity output values monitored by n monitoring points at a first preset time interval to obtain a first capacity output value sequence, wherein the air conditioner operation parameters comprise indoor temperature and outdoor temperature;
calculating an average value of a plurality of outdoor temperatures monitored at every interval of first preset time;
judging whether the temperature difference between the current outdoor temperature and the average value of the plurality of outdoor temperatures is smaller than a first preset temperature difference or not;
if the temperature difference between the current outdoor temperature and the average value of the plurality of outdoor temperatures is smaller than a first preset temperature difference, the capacity detection threshold values corresponding to the n monitoring points under the same operation environment are taken to obtain a capacity detection threshold value sequence, otherwise, the operation capacity detection of the air conditioner is quitted;
judging whether the capacity output value of each monitoring point in the n monitoring points is smaller than a corresponding capacity detection threshold value;
if yes, recording the times that the capacity output value is smaller than the corresponding capacity detection threshold value;
and determining whether the operation capacity of the air conditioner reaches the standard or not according to the times.
2. The method for detecting the operation capability of the air conditioner according to claim 1, wherein the determining whether the operation capability of the air conditioner reaches the standard according to the number of times includes:
judging whether the times are more than preset times or not;
and if so, judging that the operation capacity of the air conditioner does not reach the standard.
3. The operation capability detection method of an air conditioner according to claim 1 or 2, wherein the capability detection threshold corresponding to the n monitoring points in the same operation environment is provided by a cloud server.
4. An operation capability detection system of an air conditioner, comprising:
the system comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring air conditioner operation parameters and capacity output values monitored by n monitoring points at a first preset time interval to obtain a first capacity output value sequence, and the air conditioner operation parameters comprise indoor temperature and outdoor temperature;
the calling module is used for calling the capability detection threshold corresponding to the n monitoring points under the same operating environment to obtain a capability detection threshold sequence;
the judging module is used for judging whether the capacity output value of each monitoring point in the n monitoring points is smaller than a corresponding capacity detection threshold value;
the capacity evaluation module is used for recording the times that the capacity output value is smaller than the corresponding capacity detection threshold value when the capacity output value is smaller than the corresponding capacity detection threshold value, and determining whether the operation capacity of the air conditioner reaches the standard or not according to the times;
before the capacity detection threshold value corresponding to the n monitoring points in the same operating environment is called by the calling module to obtain a capacity detection threshold value sequence, the first obtaining module is further used for calculating an average value of a plurality of outdoor temperatures monitored at every interval in first preset time, judging whether the temperature difference between the current outdoor temperature and the average value of the plurality of outdoor temperatures is smaller than a first preset temperature difference, if so, executing a step of calling the capacity detection threshold value corresponding to the n monitoring points in the same operating environment to obtain a capacity detection threshold value sequence, and if not, exiting the operating capacity detection of the air conditioner.
5. The system of claim 4, wherein the capacity evaluation module is configured to determine whether the number of times is greater than a predetermined number of times, and if so, determine that the operation capacity of the air conditioner does not reach the standard.
6. The system according to claim 4 or 5, wherein the capability detection threshold corresponding to the n monitoring points in the same operation environment is provided by a cloud server.
7. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that an operation capability detection program of an air conditioner is stored thereon, which when executed by a processor implements the method of any one of claims 1 to 3.
8. A refrigeration apparatus comprising a memory, a processor, and an operation capability detection program of an air conditioner stored in the memory and operable on the processor, wherein the processor implements the method according to any one of claims 1 to 3 when executing the operation capability detection program of the air conditioner.
9. The refrigeration appliance of claim 8 wherein the refrigeration appliance is an air conditioner.
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| CN112013506B (en) * | 2019-05-31 | 2022-02-25 | 青岛海尔空调电子有限公司 | Communication detection method and device and air conditioner |
| CN112728712B (en) * | 2021-01-21 | 2022-05-06 | 广东美的暖通设备有限公司 | Multi-split air conditioner running capacity detection method, multi-split air conditioner, storage medium and device |
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| CN106545958A (en) * | 2016-10-11 | 2017-03-29 | 广东美的暖通设备有限公司 | The decision method that multiple on-line system and its indoor set refrigerating capacity are not enough |
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